The NHBS Guide to UK Mosses

Mosses belong to a group of plants called bryophytes. Comprising the mosses, liverworts and hornworts, there are over 1000 species of bryophyte in Britain and Ireland, which is around 58% of the species found in the whole of Europe.

Although often overlooked, mosses are fascinating to study and are structurally both complex and elegant. When seen through a hand lens or microscope they have details that easily compare in beauty with those of their larger plant cousins.

In this article we’ll introduce you to a handful of some of the commonest and easiest to identify mosses that you will find in the UK. If you’re interested in learning more, we’ve also provided a list of excellent field guides and books at the bottom of the guide, along with some helpful links to other online resources.

Why are mosses important?

Mosses are one of the first plants to colonise bare ground. They provide important habitat for invertebrates, particularly those fond of a damp environment such as slugs and woodlice. A healthy mossy environment will also be attractive to larger animals who feed on these invertebrates, such as frogs and toads, and will provide shelter to a diverse range of microscopic organisms, including nemotodes, rotifers and tardigrades.

Mosses can hold a huge amount of water and so play a crucial role in mitigating flooding during periods of intense rainfall. Sphagnum moss in particular can absorb up to 20 times its weight in water, and is instrumental in slowing the flow of rainwater from the hills and moors and reducing the risk of flooding in downstream towns and cities.

Did you know?
  • Mosses have stems and leaves but no true roots or advanced vascular systems. This is why we only have small mosses and not ones that are the size of trees!
  • There are around 20,000 species of moss worldwide and they are found everywhere except for in the sea – even in Antarctica!
  • Unlike flowering plants, mosses produce spores rather than seeds and flowers. Spores are produced in a small capsule which grows on a long stem called a seta.
  • Mosses require damp conditions for reproduction – this is because the male cells require a film of water in order to reach the female cells and fertilise them.
Common UK mosses

Rough-stalked feather moss (Brachythecium rutabulum)

Brachythecium rutabulum. Image via Wikipedia Commons.

Also known as ‘ordinary moss’, rough-stalked feather moss is one of our most common moss species, and can be found growing widely in woodlands, lawns and at the base of hedges. It is yellow-green in colour and has branching stems with pointed oval leaves. Shoot tips are generally pale and glossy. Curved, egg-shaped capsules are frequently produced.

Common haircap (Polytrichum commune)

Polytrichum commune. Image via Wikimedia Commons.

Also known as marsh hair moss, common haircap is one of our tallest species of moss and can form clumps up to 40cm in height. Found in damp, acidic areas such as heaths, bogs and moorland, it can also be found near to streams and rivers within woodland. Plants are bright green, fading to brown with age, and often grow in compact clumps. The stems are tough and wiry, and its leaves are narrow and spear-shaped. When viewed from above, each individual stem looks star-like. In the summer it produces brown, box-shaped capsules.

Swan’s-neck thyme-moss (Mnium hornum)

Mnium hornum. Image via Wikimedia Commons.

Swan’s-neck thyme-moss is abundant in acidic woodland on logs, rocks and soil. It has upright stems which are 2–4cm tall, and leaves which are approximately 4mm in length with a toothed border. Frequently produces capsules on the end of 2.5–5cm long stalks. Capsules have a pointed tip.

Common tamarisk moss (Thuidium tamariscinum)

Thuidium tamariscinum. Image via Wikimedia Commons.

Common tamarisk moss is very distinctive and forms loose mats of fern-like shoots which range from yellow-green to dark green. Individual leaves are triangular or heart shaped, and the stems can be green or red-brown. It forms capsules only occasionally in the autumn and winter. It commonly grows on neutral soil in woodland, hedges and damp grass.

Sphagnum moss (Sphagnum spp.)

Sphagnum capillifolium. Image via Wikimedia Commons.

There are more than 30 species of sphagnum moss in the UK and they can be very difficult to tell apart. Although each plant is small, they often grow together in dense mats to form large areas of spongy carpet. Sometimes referred to as ‘bog-mosses’, they can be beautifully multi-coloured and thrive on peat bogs, marshland, heath and moorland. They also have an important role in the formation of peat bogs.

Common striated feather-moss (Eurhynchium striatum)

Eurhynchium striatum. Image via Wikimedia Commons.

Common striated feather-moss is common in lowland woodland, particularly those with a high clay soil. It often forms cushions or mats that can cover large areas. Leaves are triangular or heart-shaped with finely toothed margins and have wrinkles that run down the length of the leaf (you may need a hand lens to observe this identifying feature). Spore capsules are only occasionally present, but have a beak-shaped tip.

Recommended reading

A Field Guide to Bryophytes

This field guide covers 133 species of moss and liverwort encountered in most UK habitats, using non-specialist terms to help identify them on over 100 full-colour pages. Twelve flow-charts help identify species by the habitat they occur in. All proceeds from the sale of this book go directly to the conservation program of The Species Recovery Trust.

 

Mosses and Liverworts of Britain and Ireland: A Field Guide

This invaluable guide features hundreds of colour photographs and black and white drawings, both of whole plants and with distinguishing features magnified. It also includes notes on how to identify and distinguish plants from similar species, alongside distribution maps and habitat notes.

 

 

Guide to Mosses and Liverworts of Woodlands

Mosses and liverworts can form quite an extensive part of the woodland flora, carpeting the ground and covering tree trunks and branches. This guide covers seven liverworts and 16 mosses commonly found in woodlands. Photographs of plants in the wild and brief identification notes are provided to aid identification.

 

 

Moss: From Forest to Garden: A Guide to the Hidden World of Moss

In Moss you’ll discover the key moss varieties and where they can be found, as well as the cultural history of moss both as a garden plant and its uses in traditional handicrafts. Take a tour of the best moss gardens in Japan, the UK and the US, and meet people who share their passion for these plants.

 

Useful links

British Bryological Society (BBS) – The BBS supports anyone interested in the study and conservation of mosses, from the absolute beginner to the experienced researcher. They host field meetings, organise recording and research projects, and publish an academic journal as well as a popular membership magazine.

Mosses and Liverworts of Town and Garden (pdf) – This downloadable leaflet will help you to identify some of the most common species of moss and liverwort with the use of a hand lens.

Universal nest bricks

Many UK bird populations have shown a dramatic decline since the 1970s and 80s, with species such as starlings (Sturnus vulgaris), house sparrows (Passer domesticus) and swifts (Apus apus) declining by over 50%. This is thought to be due to changes in land use and agricultural practices impacting food supply and the availability of suitable habitats. Changes in architecture have meant a reduction in important nooks and crannies that are utilised as nesting sites by species such as swifts, reducing reproduction rates in urban areas.

Providing suitable nest boxes has been shown to help increase reproduction rates for many species, helping to boost populations. Stephen Fitt and Mike Priaulx, members of the Swifts Local Network: Swifts and Planning Group, discuss the concept of ‘universal’ bricks, the British Standard key requirements on the inclusion of nest boxes within housing developments and current calls for a more specific national policy regarding these features.

Universal nest bricks

A British Standard BS 42021:2022 for integral nest boxes was published in March 2022. This sets out requirements for numbers, location, dimensions, materials, entrance hole size, and an administrative process to demonstrate implementation on site. This will enable integral nest boxes to provide nest spaces for a wide variety of species, such as house sparrows, starlings, swifts, house martins, and blue and great tits.

The standard also covers nest cups for house martins and swallows.

House martin using a Schwegler swift brick by Hugh Hastings and the Duchy of Cornwall

Some species-specific integral nest boxes are quite inflexible. Sparrow terraces, for example, are rarely fully occupied and are unpopular with other species. Deep nest bricks, such as those designed specifically for starlings, could cause a swift to become trapped within it.

Although swift bricks were designed initially to allow swifts to nest, these are now considered a ‘universal’ nest brick as set out in the NHBC Foundation report: Biodiversity in new housing developments: creating wildlife-friendly communities (April 2021). Section 8.1 Nest sites for birds (page 42) states: “Provision of integral nest sites for swifts is through hollow chambers fitted into the fabric of a building while in construction. Although targeting swifts they will also be used by house sparrows, tits and starlings so are considered a ‘universal brick’.”

Swift by Simon Stirrup (Cambridge Bird Club)

The British Standard sets out key requirements for integral boxes as follows:

  • The number of integral boxes in housing developments – at least one per residential unit on average.
  • The numbers of the above installed in larger buildings – to be proportionate to the mass and design; there is not necessarily an upper limit.
  • In all but exceptional circumstances the entrance holes of all integral boxes should be 30mm x 65mm minimum to enable starlings to enter.
  • The entrance hole should be located close to the base of the box to avoid birds becoming trapped within.

This ‘universal’ nest brick concept has also been described in an article by CIEEM, which references a January 2022 paper on this subject by the Swifts Local Network (SLN).

Local policy legislation has also begun to recognise this line of thinking, for example the Westminster Environment Sustainable Planning Document (February 2022), which in particular calls for: “‘swift bricks’ within external walls…Swift bricks’ are also used by house sparrows and other small bird species so are considered a ‘universal brick’. Integrated nesting bricks are preferred to external boxes for reasons of longevity, reduced maintenance, better temperature regulation, and aesthetic integration with the building design” (Species and Habitats, page 49).

The results from Duchy of Cornwall monitoring programmes confirm that by installing high numbers (an average of one per residential unit) of “‘swift/universal boxes’ in new-build developments, approximately 50% showed signs of occupation after five years, so it is highly likely that they will all be used during the lifetime of the building(s) they are situated in.”

Swift chicks inside a ‘universal brick’. Image by Dick Newell.

Many conservationists would like to see either a numerical value in the Biodiversity Net Gain methodology for these features for wildlife, or a separate strand to the national policy requiring these to be specified. The BREEAM environmental assessment has been following a similar approach for more than a decade.

Such features are already demanded by specific policies in some Local Plans, but other plans are still being published with no such requirements.

CIEEM highlight in the June 2019 issue of their In Practice journal the value of swift bricks to a wide range of small bird species, and provide readily available best practice guidance on the implementation of the bricks, including a recommendation for one nest space per dwelling on average (in accordance with the BS 42021:2022, and following on from RIBA guidance Designing for Biodiversity published back in 2013). While some local authorities such as Brighton are implementing this guidance, others rely on numbers derived from ecologists’ and planning officers’ advice, which can be very variable.

Some developers, Taylor Wimpey being one example, are publishing their own policies for biodiversity measures such as the installation of integral nest bricks.

Defra are developing a simplified Small Sites Metric for Biodiversity Net Gain, and the consultation on this held during autumn 2021 may provide a glimpse of the future as it asks about including a value for bird and bat boxes in the metric, although this has not appeared in practice as yet.

To find out about the swift nest boxes we sell at NHBS, check out our website.

This Week in Biodiversity News – 31st October 2022

Climate Change

100 universities in the UK have pledged to divest from fossil fuels, equating to 65% of the country’s higher education sector. The Fossil Free campaign, led by students, has been active since 2013, with the first institution, the University of Glasgow, announcing its divestment in 2014. Coventry University has become the 100th. Together, the endowments now unavailable for fossil fuel companies are worth more than £17.6bn.

Key UN reports published recently are warning that the world is close to an irreversible climate breakdown. The reports state that global greenhouse gas emissions must fall by about half by 2030 to meet the internationally agreed target of limiting heating to 1.5C or below, but they are still rising. This news comes ahead of the announcement that profits from the world’s seven biggest oil firms increased to nearly £150bn so far this year.

Conservation

The threatened Barberry carpet moth has seen a boom in numbers in a forest in Dorset, with the population trebling in four years. Experts found 50 larvae in Blandford Forest during their most recent survey, compared to just 14 in 2018. The moth was almost extinct in the 1980s, limited to just a single location in the UK. This drop was thought to be due to Barberry bushes being removed by farmers. Both Forestry England and Butterfly Conservation began planting Barberry plants in woodlands and along the edges of farmland in 2007 to try to repopulate the species.

The Center for Biological Diversity is suing National Oceanic and Atmospheric Administration (NOAA) Fisheries in the US, as it says the organisation is not protecting endangered Pacific humpback whales from entanglements in drift gillnets. The lawsuit claims that, in the past two fishing seasons, about 12 humpbacks were caught in the California-based drift gillnet fishery, violating the Endangered Species Act. Several other lawsuits have been launched in recent weeks to protect wildlife, including one for the lesser prairie chicken and another for the streaked horned lark.

30% of forests in Sierra Nevada, USA, disappeared between 2011 and 2020. The historic droughts and wildfires that plagued California for more than a decade have severely impacted woodlands. More than half of mature forest habitats and 85% of high-density mature forests have either been destroyed or transformed into low-density forests. These areas usually contain high levels of biodiversity, with a range of different types of trees, but the increasing loss of these mature forests is threatening this biodiversity.

New discoveries

Six new rain frog species have been discovered in Ecuador. Scientists discovered all six species on the eastern slopes of the Ecuadorian Andes, in two national parks, within a 20km-radius of deforested areas. There are more than 550 different Pristimantis frog species across Central and South America. All six have been recommended to be added to the IUCN’s red list of threatened species.

A new species of mammal has been found in mainland Britain for the first time. The greater white-toothed shrew, usually found across western parts of Europe as well as the Channel Islands of Guernsey and Alderney, was spotted in Sunderland in 2021. The dead specimen was examined using a DNA test to confirm its species. There is other evidence that this species has been here for a while, with remains found in owl pellets in Ireland in 2007 and photos dating from at least 2015. Research is currently underway to discover how these shrews may have arrived.

Research

A new study has found that bees ‘count’ from left to right. There is a much-debated theory that this direction is inherent to all animals, including humans. However, as the opposite direction has been found in people from cultures that use an Arabic script, it has been suggested that there is a cultural element involved. The study, published in Proceedings of the National Academy of Sciences journal, found that after being trained to associate numbers with a sucrose reward, honey bees ordered numbers in increasing size from left to right.

A bar-tailed godwit has set a world record with a 13,560km continuous flight from Alaska to southern Australia, taking 11 days and one hour. The satellite tag recorded the flight of the five-month-old juvenile bar-tailed godwit, which was over 500km longer than the previous record. Juveniles migrate separately from adults, who make the journey up to six weeks earlier, as the juveniles use the extra time to fatten up for the long migration. Bar-jailed godwits can shrink their internal organs to make more space for these extra fat stores.

Hybrid songbirds are found more often in human-altered environments than in natural areas. A new study, published in Global Change Biology, found that hybrids of the black-capped and mountain chickadee, two common North American songbirds, were more likely to be found where humans had altered the landscape in some way. The study looked at observational data from the citizen science site eBird, as well as DNA samples from 196 black-capped and 213 mountain chickadees at 81 sites in North America. While they found a positive, significant correlation between hybrids and areas where humans have disturbed their habitat in some form, the study did not determine why these hybrids were more common in these areas.

Policy

The UK government has delayed its publication of clean water and biodiversity targets, breaching its Environment Act. The targets, which will underpin the country’s nature recovery were meant to be released on 31 October, ahead of the COP27 UN climate talks in November. The delay in publication means the delegation will not have targets to present to other countries. This is stated to be due to the “significant public response” to Defra’s consultation on nature recovery, with no date set as to when the targets will be published. This adds further concern to a number of environmentalists, as the government is currently reviewing over 500 pieces of environmental legislation by the end of next year under the retained EU law bill. If, by the end of this period, any bill has not been amended or retained by parliament, it will fall. Many critics are suggesting that it is unlikely the government will be able to review the thousands of EU laws required within this time.

Pollution

An analysis has found that scrapping nature-friendly farming payment schemes could worsen river pollution in England by up to 20%. Recent sources suggested that the previous government was looking to remove nature restoration from the upcoming scheme intended to replace the EU’s area-based payment scheme for farmers. 86% of rivers in England were deemed to not be in a ‘good ecological condition’, with agriculture being the reason why 40% of water bodies in England failed to meet this status, according to the Environment Agency.

Book reviews recently featured in British Wildlife

British Wildlife has featured book reviews since the very first magazine back in 1989, and every review included in issues since 2018 is available to read on the British Wildlife website. These reviews provide in-depth critiques of the most important new titles in natural history publishing, from nature-writing bestsellers to technical identification handbooks. They are all authored by experts in relevant subjects, ensuring an honest and insightful appraisal of each book featured. Here is a list of the book reviews included in recent issues of British Wildlife, all with links to take you directly to the full review.

1. Silent Earth: Averting the Insect Apocalypse by Dave Goulson

“This reader found the book literate, persuasive, sympathetic, and based both on sound science and on a willingness to grapple with the realities. Goulson is the best ambassador for small life that we have.”

– Peter Marren, BW 33.3 December 2021. Read the review here

 

 

2. Slime: A Natural History by Susanne Wedlich

“To say that this is a fascinating story of a neglected subject does not really do justice to it. It is a well-researched and surprisingly genial encounter with this oozy, sticky world, written with a journalist’s sharp eye for a good story.”

– Peter Marren, BW 33.4 February 2022. Read the review here

 

 

3. Wild Fell: Fighting for Nature on a Lake District Farm by Lee Schofield

“Wild Fell is an exhilarating tour of Lee’s patch, with side excursions to Scotland and Norway and the Italian Alps for insights into the abundance which nature is bursting to give us. His writing, like the extinct, extant and envisioned landscapes he describes, is studded with moments of immense beauty – you can almost smell rock and moss and nectar, hear butterflies and grasshoppers flit and whirr, feel the shadow of a great wing passing between you and the sun.”

– Amy-Jane Beer, BW 33.4 February 2022. Read the review here

4. Peak District by Penny Anderson

“Readers of the book in the future may know, and in the penultimate sentence they are posed a question about the region: ‘Is it still highly distinctive and special?’ We cannot know their answer, but we can be sure that they will learn a great deal about the Peak District, and probably much about us and what we think about the area today. They will certainly have a good book in their hands.”

– Anthony Robinson, BW 33.5 April 2022. Read the review here

5. Field Handbook to British and Irish Dandelions by A. John Richards

“This new BSBI handbook is quite something. The modern miracle of colour printing allows every dandelion species to be reproduced in colour, and with up to five images per page, and at an affordable price.”

– Peter Marren, BW 33.5 April 2022. Read the review here

 

 

6. Wild Green Wonders: A Life in Nature by Patrick Barkham

“As British Wildlife readers know, Barkham dispenses with literary glitter to get to the heart of an issue, straightforwardly, sometimes understatedly, even modestly, but with an infectious charm and, I think, an innate generosity. I like his writing very much. It informs, it reads well, it takes you to unexpected places, and leaves you thinking afterwards. This is good journalism.”

– Peter Marren, BW 33.6 May 2022. Read the review here

7. Ants: The Ultimate Social Insects by Richard Jones

“Seasoned myrmecologists will probably want this review to answer one fundamental query: ‘I’ve got “Donisthorpe”, do I really need another book on ants?’ The answer is, in my opinion, a resounding ‘Yes!’”

– Adrian Knowles, BW 33.6 May 2022. Read the review here

 

8. After They’re Gone: Extinctions Past, Present and Future by Peter Marren

“After They’re Gone reminds us that environmental change is constant, and sometimes dramatic enough to wipe out millions of species.”

– Laurence Rose, BW 33.6 May 2022. Read the review here

 

 

 

9. Alchemilla: Lady’s-mantles of Britain and Ireland by Mark Lynes

“The author leaves us in no doubt that he is captivated by these plants, and he pays tribute to his predecessors, Max Walters and Margaret Bradshaw, who sorted out British Alchemilla taxa for the first time.”

– Peter Marren, BW 33.7 June 2022. Read the review here

 

10. British Craneflies by Alan Stubbs

“I would strongly recommend this book (and the others in the series) to anybody wishing to broaden his or her natural-history interests and keen to gain new and exciting perspectives on the sites, habitats and landscapes which they visit.”

– Steven Falk, BW 33.7 June 2022. Read the review here

 

11. Trees by Peter Thomas

“But it is an excellent and comprehensive book, and highly recommended for all those professionally involved in trees, concerned about trees, or wishing simply to understand more about trees. It will certainly keep me supplied with a sufficient understanding of them for the next 40 years.”

– Jonathan Spencer, BW 33.8 August 2022. Read the review here

 

12. Cornerstones: Wild Forces That Can Change Our World by Benedict Macdonald 

“Benedict Macdonald, author of the eye-opening and influential Rebirding (see BW 31: 154), is passionate about restoring wildlife at scale by allowing natural processes a freer hand; first and foremost, then, his new book is aimed at building support for this approach to conservation.”

– Ian Carter, BW 33.8 August 2022. Read the review here

 

13. Birds and Us: A 12,000 Year History, from Cave Art to Conservation by Tim Birkhead

“This is modern science at its best and liveliest. It is also a gem of cultural history that could have been written only by someone who is personally immersed in the world of birds. You come away with a renewed sense that birds are wonderful, not least in the way they capture the human heart as well as the head.”

– Peter Marren, BW 33.8 August 2022. Read the review here

Since its launch in 1989, British Wildlife has established its position as the leading natural history magazine in the UK, providing essential reading for both enthusiasts and professional naturalists and wildlife conservationists. Individual back issues of the magazine are available to purchase through the NHBS website, while annual subscriptions start from just £40 – you can subscribe online or by phone (01803 467166). Visit www.britishwildlife.com for more information. 

 

It’s tree planting season!

Autumn and winter are the ideal time for tree-planting. Image by Andrew Callow via Flickr

Late autumn and winter are the ideal time for planting trees and hedgerows. In this article we provide lots of tips for the first time tree-planter and point you in the direction of heaps of helpful information to ensure that your trees and shrubs get off to the best start this year.

Why is winter the best time to plant trees?

During the winter, trees are mostly dormant. This means that their aerial parts are not actively growing. However, below the ground is a different story. Trees use this period of dormancy to create an expansive root network which will work hard throughout the year to provide the plant with plenty of water and nutrients. Planting the tree during the late autumn and winter gives it plenty of time to build up a strong root structure in time for spring. Soil also tends to be softer and moister during the colder months, which helps the tree to expand and grow its roots.  Plus, there is much less competition from weeds and grass, so your sapling has a better chance of establishing successfully.

Which species should I plant?

The species of tree you wish to plant will depend largely on where you want to put it. Is it going to be part of a hedgerow or will it stand on its own? How much space do you have, and how big is the tree likely to grow? For example, if you are planting in a small garden, you don’t want a tree that will grow too large or where it will end up shadowing your own or someone elses land or house. Don’t forget that a tree’s root system can grow much larger than its canopy, so planting near to buildings can become a problem later down the line.

A good rule of thumb is to take note of the trees that are growing and thriving locally, as these will be species that are suited to the local conditions. Choosing native varieties is also important, as these will help to support lots of wildlife such as birds, bees and butterflies. There are more than 60 species of native tree and shrub in the UK, so there’s plenty to choose from!

Where do I get my tree(s) from?

Trees and hedgerow plants are widely available from garden centres and tree nurseries. Make sure to check that trees have been grown in the UK, as trees imported from overseas are at risk of being contaminated with exotic pests and diseases. Trees of different ages will be available and your choice will depend largely on your budget and means of transportation. The main types are:

Transplants – Young seedlings that have been started in a tree nursery then dug up, ready to be transplanted in their final location. You may hear these  referred to as a ‘whip’ – this is a transplant that doesn’t yet have any branches. (As the name suggests, this can look, rather unpromisingly, like a slim twig).

Standard – A larger tree which has a head of branches. Usually these trees will be over two metres in height, meaning that transportation can be more of an issue.

Heavy standard – Similar to the standard, these trees will also have a head of branches but will be older and larger; usually over three metres in height.

Semi-mature – These are well-established trees which are likely to be at least 10-15 years old. They tend to be four metres or more in height and so are generally more suited to commercial or larger-scale planting projects.

Transplants and whips are likely to be sold either in their own containers or with bare roots. Standards, heavy-standards and semi-mature trees, however, are usually ‘root-balled’ which means that their roots will be covered in soil and then wrapped in hessian for safe transportation.

Another option is to grow your own trees from seeds collected in the wild. As well as being hugely satisfying, this option has the benefit of being free! The Conservation Volunteers website has lots of information on collecting, extracting, sowing and growing your tree seeds, including a comprehensive handbook that is free to download.

How do I plant my tree?

Trees should be transplanted as soon as possible after purchase. For small trees you can simply use a spade to cut a T-shape in the soil, pressing in the spade to the same depth as you wish the roots to go. By peeling back the turf at the central point of the T, you can insert your transplant or whip and then press the turf back into place, making sure that the soil is well packed around the roots. Hedge plants can be planted using the same technique, either in a single or double row. Plants should be placed around 30cm apart in a single row or 50cm apart in a staggered double row. Applying a thick layer of mulch around the base of the tree will help to conserve moisture and prevent weed growth – but don’t let the mulch touch the tree itself, as this can encourage mould and decay. You may also need to fit a tree guard if you are planting young trees in an area where animals such as deer or rabbits could be a problem.

For larger trees, you will need to dig a hole that is large enough for the roots to spread out. If the soil is poor you may wish to dig a larger hole and then add some good quality compost before planting the tree. Tease out the roots if they are compacted or wound up and then place the tree gently in the hole. Once you have back-filled the hole with soil, it is important to ‘tread-in’ the plant so that the soil is firm around the base and roots. Apply a layer of mulch in a 1m diameter around the tree after removing any grass or weeds if necessary.

All newly planted trees should be watered immediately.

What now? Do I need to look after my tree?

Although the hard work is now done, it is important to check on your tree at least once a year to make sure that it is growing and thriving. Particularly with young trees, it may be necessary to water regularly in the summer or during any particularly dry periods. During the first three years it is also worth weeding by hand around the base of the tree to minimise competition for water and nutrients. Applying a thick mulch will also help to control weeds – leaf litter, lawn clippings or composted bark are great organic options.

Further information

• National Tree Week – In 2022 National Tree Week takes place on 26th November to the 4th December. Take the opportunity to get involved by planting your own tree, or get in touch with your local Tree Warden Network to see if there are any organised tree plantings happening where you live.

• Autumn Seed Harvest Handbook – This great handbook from The Conservation Volunteers provides all the information you need to collect, process and plant a tree from seeds found in your own neighbourhood.

• Twigged! – This great booklet from the Woodland Trust provides lots and lots of information on our native trees and how to recognise them throughout the year.

• Royal Horticultural Society website – The RHS website has a wealth of information on tree species that will help you to choose the right kind for your garden or planting project.

Recommended reading

Collins Tree Guide

The Collins Tree Guide is a definitive, fully illustrated guide to the trees of Britain and non-Mediterranean Europe, containing some of the finest original tree illustrations ever produced. Within each tree family there is a list of key species and a guide to the most important features to look for.

 

The Field Key to Winter Twigs

The Field Key to Winter Twigs offers a striking new approach to the identification of over 400 wild or planted trees, shrubs and woody climbers in the British Isles. It allows any diligent enthusiast to reliably name a woody plant, normally within three turns of pages and often within a minute of study.

 

The Tree Name Trail

Produced with the support of the Forestry Commission, this 12-page laminated fold-out chart contains a full-colour illustrated key to the leaves, twigs, fruits and seeds of the commonest broadleaved and coniferous trees of Britain and Ireland.

 

Tree-Spotting: A Simple Guide to Britain’s Trees

A beautiful and captivating insight into the wonderful world of trees, Tree-Spotting burrows down into the history and hidden secrets of each species. It explores how our relationship with trees can be very personal, and hopes to bring you closer to the natural world around you.

Living Planet Report 2022

WWF’s 2022 Living Planet Report on Youtube.com
What is the Living Planet Report?

The Living Planet Report, compiled by WWF in association with the Zoological Society of London, is the most comprehensive study ever undertaken on the changes in global biodiversity and planet health. Using datasets from almost 32,000 populations of 5,230 species across the planet, the document details how global wildlife populations have changed since 1970, and how these vary between continents and species groups. Utilising recent developments in mapping analysis techniques means that the speed and scale of biodiversity change can now be seen much more clearly and on a finer scale than ever before, allowing us to pinpoint the areas that are suffering most and where nature is contributing most to our lives.

As well as documenting the data, the Living Planet Report aims to show that positive change is still possible, and that the key drivers of biodiversity loss and habitat destruction need to be addressed with great urgency. The final chapter of the document, ‘Building a nature-positive society’, discusses how there is no one-size-fits all solution to the biodiversity crisis, and that transformational change will be required across all areas – production, consumption, finance and economics – before we start to see a beneficial effect on nature.

Key points from the 2022 Living Planet Report

• Changes in the Living Planet Index, which tracks trends in population abundance of mammals, fish, reptiles, birds and amphibians, has revealed that populations have declined by an average of 69% between 1970 and 2018.
• Freshwater populations have been hit the hardest, showing an average decrease of 83% over this period.
• Latin America and the Caribbean showed the biggest decline in species abundance (-94%), followed by Africa (-66%). This is in comparison to a relatively moderate -18% recorded in Europe.
• Land-use change is still the most significant driver of biodiversity loss. Unless we make serious efforts to control the impacts of climate change, however, this is likely to become the most dominant cause within the next few decades.

Looking forward

“We know that the health of our planet is declining, and we know why. We also know that we have the knowledge and means to address climate change and biodiversity loss”.

In the final chapter of the Living Planet Report, we are reminded of the recognition by the UN in July 2022 that it is a human right to live in a clean, healthy and sustainable environment. With this in mind, it is clear that the current climate and biodiversity crises are also human rights crises, and our world’s most vulnerable people, wildlife and places are already bearing the brunt of these.

It is also clear that the changes required to ‘bend the curve’ of biodiversity loss will need to be nothing short of transformational and system-wide. They will need to impact all aspects of the way we live, including our means of production and consumption, the technology we use, the things we finance, and our entire economic systems.

Within the report, Costa Rica is lauded as an inspirational environmental giant due to the changes made to its constitution in 1994. Since then, 30% of the country has been designated as national parks, 99% of its electricity comes from renewable sources and reforestation has doubled the amount of forest cover from 25% in 1994 to 50% today. Looking to examples such as these as inspiration for what can occur with large-scale systemic change is key to realising the dream of a healthy environment for all.

The ultimate message provided by the Living Planet Report is that, while there is still time to act, urgency is required. Solutions will need to be applied globally by governments, businesses, local communities and Indigenous Peoples with the aim of reversing biodiversity loss by 2030, and achieving complete recovery by 2050. The UN Convention on Biological Diversity’s COP15 is a huge opportunity for world leaders to commit to rapid and effective action in order to secure a nature-positive, equitable future for everyone.

This Week in Biodiversity News – 17th October 2022

Climate Change

Climate change could force primates such as monkeys and lemurs from the trees to the forest floor. A new study from San Diego Zoo Wildlife Alliance suggests that in warmer temperatures, tree-dwelling primates could begin spending more time on the ground searching for shade and water. Spending more time on the forest floor could increase interactions between these species and humans, as well as domestic animals, increasing the chances of conflict, disturbance and disease transmission. This change in behaviour may also have an impact on other species, as the primates’ diets may become more generalised, changing predator/prey relationships and potentially impacting dispersal strategies.

Extinction Risk

More than a third of hoverfly species in Europe are at risk of extinction, according to the International Union for Conservation of Nature (IUCN). This assessment, requested and funded by the European Commission, found that intensive agriculture, harmful pesticides, unsustainable commercial forestry, urban development and climate change have been identified as the main threats to hoverflies. 314 out of 890 hoverfly species in Europe are Vulnerable, Endangered or Critically Endangered.

Almost 70% of animal populations have been wiped out since 1970, according to the biennial Living Planet Report. The leading scientific assessment, run by the World Wildlife Fund (WWF) and Zoological Society of London, shows that the abundance of birds, fish, amphibians and reptiles declined, on average, by more than two thirds between 1970 and 2018. The 89 authors are now urging world leaders to reach an ambitious agreement at the upcoming COP15 biodiversity summit and to cut carbon emissions to limit global heating to below 1.5 degrees within this decade.

Alaska has canceled its fall and winter snow crab harvesting seasons after the population declined across the Bering Sea. The cause of the collapse is currently being researched but it is thought that increased predation, combined with stresses from warming waters, may be to blame. Populations of several species, including the snow crab, have also been shifting away from the coast and northwards for the last four decades, impacting Alaskan fisheries and local communities.

New discoveries

A new fish has been discovered in the Atacama Trench off the west coast of South America. The small blue snailfish was spotted by a team of scientists using free-falling landers to sample deep-sea creatures using cameras and traps with bait. The deep-sea species was seen from about 6,000-7,600m deep and, using DNA barcoding and a 3D x-ray technique called microcomputed tomography, the team was able to determine where the species fit within the snailfish family. They were surprised to learn that this new species appears to be a seperate coloniser of the Atacama Trench, as it belongs in the genus Paraliparis, with other species in this genus rarely being found deeper than 2,000m.

Research

A new study has found that wild bees are active in woodland tree-tops, a habitat now thought to play a more significant role in bee conservation than previously thought. Researchers from the University of East Anglia studied bee communities across 15 woodland sites in a farmed landscape in Norfolk in late spring, examining levels of bee activity in four habitats: the canopy and understory of both woodland interiors and exposed woodland edges. They found a diverse community of wild bees utilising the woodland canopy, particularly near flowering sycamore trees. This has implications for bee conservation policies, as nectar producing trees such as sycamores may represent a significant food source for certain bee species.

Catch and release fishing may be having physiological and behavioural impacts on sharks. The practice, an important component of both ecotourism industries and scientific research worldwide, was the subject of a recent study published in Conservation Physiology. Researchers used ‘biologging’ and blood chemistry to explore the impacts of these interactions on two species: the blue shark (Prionace glauca) and the tiger shark (Galeocerdo cuvier). The research shows that short-term capture lead to a significant and rapid increase in body temperature in both species, lasting for between 10-40 minutes post-release. Further research is now needed into the potential longer term effects on the welfare of sharks that are caught using catch and release methods.

Policy

Experts call for legal rights and protections to be granted to non-human entities such as animals, trees and rivers to help tackle climate breakdown and biodiversity loss. A report entitled Law in the Emerging Bio Age states that legal frameworks may have a key part to play in governing human interactions with the environment and biotechnology.

Pollution

Chicken farms may explain the declining health of the River Wye, according to samples taken by citizen scientists. The Wye Salmon Association, with support from the Countryside Charity CPRE, tested soil samples along public footpaths near a tributary of the River Wye in Herefordshire and found that the highest levels of phosphorus were found in soils close to intensive poultry units. High phosphorus levels in river systems have a number of ecological impacts, including eutrophiciation, where excess nutrients cause increased algal and plant growth, which can reduce oxygen levels in the water. Toxic algal blooms can occur, as well as changes in habitat availability, where increased plant growth has covered previously bare gravel or sediment river beds. Campaigners are now calling for stronger regulations around the spreading of manure to limit phosphorus levels in soil.

A new study has revealed the ‘staggering’ scale of lost fishing gear currently drifting in the oceans. These include 25 million pots and traps, 14 billion hooks, and enough nets that, if tied together, could stretch around the world 18 times. Published in Science Advances, this report by researchers from CSIRO and the University of Tasmania used interviews with 451 commercial fishers from seven different countries to ask about what was being lost. They then matched the date from these interviews with data on global commercial fishing to estimate the total annual losses world wide. Ghost nets, as these lost nets are called, are lethal for many forms of marine life, potentially continuing to trap wildlife for years after they’re lost.

Conservation

A rare woodpecker has been spotted in Dorset, despite thoughts that it had died out locally. The lesser spotted woodpecker, whose population has fallen by 83% since 1970, was spotted at Hollis Mead Organic Dairy Farm in Corscombe. There are only thought to be 12 breeding pairs in Dorset according to the Dorset Wildlife Trust. The farm’s managing director believes that the organic approach his farm is taking, including not using insecticides or pesticides as well as leaving the woodland unmanaged, is beneficial for biodiversity.

Equipment in Focus: Professional Hand Nets

Designed and manufactured by NHBS, the professional hand net is a
popular net choice for pond dipping and kick sampling. It is lightweight,
durable and practical, and used by universities and professional
institutions.

The professional hand net is available with a wide variety of mesh sizes and two net depths: standard and deep. The frame and net bags can be bought separately, allowing you to customise your hand net depending on your requirements. The standard outer frame width is 250mm and other 200mm and 300mm wide versions are available. The hand net can also be bought with two- or three-part collapsible frames to allow for ease of transport.

The sturdy metal frame is manufactured using marine-grade aluminium with an inner brass frame for net bag attachment, granting considerable resistance to wear and tear in the field.

Both aluminium and wooden handles are available, the benefits of the wooden handle being that it floats and is comfortable to use in colder conditions.

Net and mesh sizes

Mesh sizes range from 53µm up to 2mm. Net bags are also available in both standard (30cm) and deep (50cm) sizes.

For extra durability small mesh sizes are made from precision welded nylon material and the 1mm and 2mm mesh bags are made from woven polyester material.

The 1mm mesh is the most commonly used size for aquatic and kick sampling and the 2mm is more suited for amphibian surveys. Smaller precision meshes can be used for sampling smaller organisms such as plankton and chironomids.

Changing nets

Net bags can be attached and detached from the frame so that multiple nets can be used with a single frame. This can be handy for washing and replacing nets or when using different net meshes for sampling different organisms.

To demonstrate how to attach a net to the hand net frame, we have gone step by step through this process.

Steps

Begin by removing the inner brass frame from the outer aluminium frame by undoing the set screws from the outside of the frame using an allen key or use a spanner to loosen the nuts on the inside of the frame.

After removing the nuts, set screws and plastic clips, slide the net bag onto the now free inner brass frame using the slots in the orange section of the bag. Ensure the two upper slots are positioned just below the corners of the frame. It may be preferable to remove the plastic tube that connects the ends of the inner frame before feeding the frame into the net bag and reconnecting it.

The plastic clips can now be clipped onto the brass frame in the slots of the net bag. Ensure the flat side of the clip is facing the outside.

Place the clip flush against the hole in the outer metal frame and insert the set screw through the hole in the clip and the frame. The holes in the outer frame are off-centred, so ensure the holes are nearer to you when fixing the clips to allow the brass inner frame to sit flush with the edge of the outer frame.

The nut should then be loosely tightened onto the set screw using a spanner or by holding the nut in place and using an allen key on the set screw.

Loosely tighten the other three nuts and ensure the inner frame is positioned correctly before fully tightening. The clips holding the brass frame should now be firmly fixed against the outer frame.

With the net bag now securely attached to the metal frame, the professional hand net can now be used in the field.

Replacement and related equipment

Our nylon Professional Hand Net Cover will help to protect and improve the longevity of the net, and is ideal for safe storage and transportation.

Replacements are available for the hand net fixings and the inner frame.

Extension pieces are also available for use with both the two- and three-part collapsible frames to allow for net extension. Extra joining ferrules are available too.

NHBS supplies a variety of specimen pots for storage and viewing of collected samples.

The Professional Hand Net can be found here. Our full range of professional hand and kick nets can be found here.

If you have any questions about our range or would like some advice on the right product for you then please contact us via email at customer.services@nhbs.com or phone on 01803 865913.

Author interview with Michael Stephen Clark: The Fragmented World of the Mongoose Lemur

The Fragmented World of the Mongoose Lemur is a book about a critically-endangered species, fractured ecosystems and the global war on nature. It is a compelling story in which author Michael Stephen Clark reveals the fundamental paradox of the mongoose lemur’s natural history.

In this post we chat to the author of this important and timely book about his work with mongoose lemurs, the problems withthe way that conservation is reported in the mainstream media and his hopes for the future given the alarming loss of biodiversity and rate of extinctions we are currently experiencing.

Author Michael Stephen Clark

Your book is described as a modern natural history, but it also conveys a larger message that is of relevance to our relationship with all wild species. Why did you choose the mongoose lemur as your focal species – what is it about this primate that makes it suitable for illustrating more widespread issues?

I first became interested in the mongoose lemur when I worked with an aged and overweight pair at London Zoo in the 1980s and 1990s. They were being kept off-exhibit, which I thought was inappropriate given their endangered status. In due course, we were able to move them into a larger, outdoor enclosure, but only after an operation had been performed on both of them to remove excess adipose tissue. It was all very invasive, but the animals were much fitter, healthier and happier as a result. Shortly afterwards, I discovered that the captive breeding programme for the species lacked co-ordination, so I established the first international studbook for the species in captivity. There wasn’t a great deal of information about them in the literature and relatively few researchers and institutions had sought to remedy that. It quickly became clear to me that the mongoose lemur was fast becoming undervalued and potentially overlooked as an endangered species. I’ve been concerned about them ever since, probably because my sympathies often lie with the ‘underdog’.

I’d long been aware that the mongoose lemur could illustrate very directly the profound disruption caused by human alteration of the natural continuum. Human attitudes to wildlife contain a raft of contradictions that result in contradictory outcomes. This is particularly true of the mongoose lemur. In common with virtually all lemurs, it is a critically endangered species that exists in compromised and/or fragmented habitat in the wild. Perversely, however, it appears (on the surface) to be more numerous and relatively safe as a naturalised alien species on the Comoros Islands of Anjouan and Moheli. Lemurs in captivity are generally viewed as a conservation priority, yet the mongoose lemur ranks lower in importance than some of the more enigmatic lemur species. Already, without digging too deeply, we can see that the mongoose lemur has experienced displacement at every point where it has come into contact with humanity.

Perhaps, more alarmingly, the mongoose lemur has unwittingly become a prima-facie example of something disquieting; namely, a growing acceptance that nature will be allowed to persist only in places of our choosing. It’s a situation that has led to questionable decisions around relocation, translocation, restoration, rewilding, and re-introduction. To my mind, these things invite compromise, not least where species such as ring-necked parakeets in England and mongoose lemurs on Anjouan are inter-changeably considered wild, free-living, native and/or naturalised. These compromises ominously signpost natural systems by human design. Presently, the momentum is behind stand-alone programmes, projects and initiatives that are, of necessity, limited in scale. This may well lead to the ultimate breakup of biodiversity and an end-point where our natural world has become little more than a ‘zoo in the wild’.

Do you think that the way conservation and the plight of endangered species are reported by the mainstream media is problematic? I’m thinking, for example, in terms of how the public, conservationists and governing bodies might go on to perceive the state of the natural world as a result?

I actually think it’s a massive problem for conservation. Once upon a time, the adage was ‘there’s no such thing as bad publicity.’ In recent years, the mainstream media has shifted away from the substantial to the superficial reporting of wildlife conservation matters. Social media and the wider online milieu all feed into that, of course, but far too many stories are either half-told, poorly-told, or just plain misleading. It’s actually worse than not telling the story at all. This is especially disruptive for governing bodies and NGOs that can so easily find themselves painted into a corner by media-generated hubris. I’m not sure that a proliferation of conservation news portals, websites, blogs, podcasts and influencers is useful either. It is more likely that conservation stories will become even more distorted, diluted and diffuse as result.

I think the effect of all this on the public, among conservationists, and within governing bodies is potentially quite dangerous. It could make identifying priorities and taking effective action a minefield of conflicting imperatives. The recurring controversy over the Ramsar site at Coul Links in Scotland is a good example of media hubris threatening not only to drown out voices of reason, but also to trample the letter of the law into the ground. It took the combined firepower of a self-generated media campaign by a coalition of Wildlife Trusts and NGOs to beat back an existential threat to unique (and legally protected) dune habitat. I suspect that such coalitions will have to establish permanent media entities if they are to fight the war on nature across several (media) fronts.

Given the alarming rate of extinctions and global diversity decline, what would you like to see happen, both on a local and an international scale, to begin dealing with this? And would you describe yourself as broadly hopeful or pessimistic about this crisis?

I’m afraid that I am neither optimistic nor pessimistic about the future. I know it’s a cliché, but I think the future is already here. The important decisions now (as ever) will lie with young people, many of whom are not only well-educated and eminently qualified, but savvy as well. I recently rejoined Linkedin after a long absence and the sheer number of extremely active, professional wildlife conservationists around the world is really quite dazzling. In the short-term, issues around job security, personal security, career development, and establishing substantial permanent facilities in the field need to be addressed.

Frankly, I think that’s primarily the top-down responsibility of pan-national institutions such UNEP and the World Bank. The scale of accelerated extinction events forewarns us of a looming biodiversity crisis that could very easily become an existential threat in just a couple of generations. It requires a global response and the money really has to start flowing from global institutions if we are to empower and support our highly motivated international conservation professionals. To my mind, food security, health, climate, biodiversity and species conservation are equal priorities. I don’t understand how this became a hierarchy of aspirational goals because the response they all require is equally urgent.

In the medium term, it is not news to say that we have to invest in future generations, but ‘hope and inspiration’ aren’t enough. I think that young children generally receive a good grounding in natural history in their pre-school and primary school years. With a little support, that can happen in a developing country as easily as it can in the UK. But, young people need to have pathways they can follow in order to learn more. From there, they can gain a rounded understanding of natural history, which would inevitably include an elementary form of conservation biology. I’m a bit surprised that some of the more prominent NGOs aren’t lobbying for this with a draft curriculum. Nature conservation education for school-age children has to graduate from photocopied fact-sheets and elevate itself as the most valuable ‘eco-system service’ available.

As a zoological professional you have studied and worked in several esteemed organisations including the University of Bristol, London Zoo and Oxford-Brookes University. What do you consider to be the most significant highlights of your career so far?

Anyone who has ‘hands-on’ experience of working with wild animals in the field and/or captivity will tell you it’s a life full of great highs and lows. It doesn’t do to dwell on the lows so I’ll concentrate on things that I considered achievements. As I explain in my book, the time I spent on Anjouan in the Comoros Islands was a very special career highlight. It was a great privilege to be trusted with the capture and care of Pteropus livingstonii, one of the rarest bat species in the world and, of course, to encounter free-living mongoose lemurs first-hand. I’m especially gratified that several papers, features and articles that I authored or co-authored were published in the course of my work at the Zoological Society of London. These included my account of mongoose lemurs on Anjouan, the jointly written history of black-footed penguins at London Zoo, and a report on breeding Leadbeater’s Possum at London Zoo. Getting up close and personal with urban foxes and badgers in the course of fieldwork for Professor Stephen Harris at Bristol University was memorable, and I very much enjoyed my brief role as a visiting lecturer at Oxford-Brookes University. It was quite an honour to be there at the beginning of the now prestigious Primate Conservation MSc course.

The Fragmented World of the Mongoose Lemur is, in large part, a species-specific natural history – a format that is perhaps less popular than it has been in previous years and decades. The book was also published independently. How did you find the process of planning, writing and publishing the book and what were the main challenges you faced?

It’s correct that the species-specific natural history books have fallen out of favour with mainstream publishers, but I’m not convinced that readers feel the same way. In (apparently) normal circumstances, the life history of a species will appear to be relatively constant. In natural history classics such as David Lack’s ‘Life of the Robin’ and Sarah Churchfield’s ‘Natural History of Shrews’, the subjects live in a self-contained world that is full of challenges, yet seems immutable. The world today, in the age of the Anthropocene, rarely allows for ‘normal circumstances’. Wild animals will live, prosper, suffer, die or become extinct largely at our discretion, which means that their life histories now have to take account of the rapid, ongoing changes wrought by hyper-accelerated, unregulated human activity. That’s why I think it’s valid to revisit species-specific natural history writing and place it in a much wider context.

There was a time when my book would have been titled ‘The Mongoose Lemur in its World’, but that world no longer exists. It more accurately lives in a fragmented world of our making. This is happening to species the world over and those that are able to adjust may live, while those that can’t will surely disappear. We need to understand what makes the difference between the two potential outcomes in order to construct a meaningful response. I think this can emerge from species-specific natural histories that draw from a deeper well of scientific, philosophical and practical resources. I think it’s too often wrongly (and condescendingly) assumed that readers either can’t or won’t respond to stories that cast the net widely and speculate, as I have done, about ‘Propects and Perspectives’.

I’m fairly comfortable now with the process of independent publishing and I’ve never seen it as a poor relation to using an established publishing house. I would describe it as a slow, gentle learning curve rather than a steep and arduous one. The early stages of planning and writing are the most fun, but luckily I quite like editing, proofing and polishing too. I’m quite experienced in that regard but I find that editing your own work means that you really can’t rush it. Familiarity breeds oversight. I usually keep sharing with others to a minimum, but for this book I got a lot of help on specific chapters. I needed it too, and their input was invaluable as the acknowledgements section of the book will attest.

If I had to identify a single challenge that was really testing, I would say that maintaining a consistent, balanced style of writing throughout gave me the most sleepless nights. I wanted to hold the reader’s interest with an engaging narrative but still maintain a firm grip of the factual material. I also wanted the book to be a bit provocative. I always think I’ve read a good book if it leaves me with as many questions as it does answers.

Finally, what is in store for you next? Do you have plans for further publications?

At the moment, I’m doing the preparatory work for events in support of the book. I’ll be using my original colour slide transparencies from Anjouan to illustrate my presentations and I recently bought a very old colour slide projector for that purpose. It’s a bit quirky, I know, but I think it will make things a bit more interesting.

In terms of writing and publishing, I have a couple of things of my own in development, but I’d be interested in collaborating with others to produce further modern natural histories. I’d like to keep the focus on primates, mainly because they’re exposed to lots of different pressures in a variety of situations where they come into close contact with us humans. Their stories challenge us to think about the relationships we have with nature generally and how we are going to rescue biodiversity from our worst excesses. Species such as pygmy slow loris, Cat Ba langurs and Kirk’s red colobus spring to mind, although there are countless others.

Print-on-demand and increasingly accessible typesetting software mean that there are few obstacles to producing books like this. If there is a problem then it is persuading authors to enter a publishing relationship that is unconventional, yet fairer and more equable than the conventional model. Publishing independently also means that your book need never go out of print, something that frustrates many published writers who find themselves out of contract.

The Fragmented World of the Mongoose Lemur by Michael Stephen Clark is available now from NHBS.

This Week in Biodiversity News – 3rd October 2022

Climate Change

As global temperatures rise due to climate change, blue lakes in North America and Europe are likely to turn from blue to green-brown. This is mainly due to changes in algal blooms and sediments which are affected by temperature and precipitation. As well as the purely aesthetic impacts on local culture and recreation, there are important implications for water quality, particularly for lakes that are used as drinking water sources.

Termites by Aleksey Gnilenkov via Flickr.

An international study looking at the future role of termites in ecosystems has determined that their role could be much larger in a warming environment. These wood-consuming insects are important for breaking down wood and contributing to the earth’s carbon cycle, but their activities are currently concentrated mainly in the tropics. With an increase in global temperatures, they are likely to expand their ranges much further north and south.

On September 18th 2022, the Arctic reached its annual minimum extent, covering an area of 1.8 million square miles. This is approximately 598,000 square miles below the 1981-2010 average minimum. Since measuring began in 1978, the amount of summer ice in the Arctic has declined significantly and 2022 was tied with 2017 and 2018 for 10th lowest in 44 years of observations.

Research

Growing hedges and perennial flower strips around intensively-farmed orchards has proven to be effective in providing wild bees with continuous forage over the growing season. The study, which was conducted by researchers at the University of Freiburg, found that the variation in flowering times of the hedgerows and flower strips meant that bee diversity and abundance were both improved.

Researchers from Hokkaido University have been using the fundamentals of chaos theory to study the behaviour of electronically tagged narwhals. In doing so, they have detected interesting patterns in what was previously assumed to be completely irregular diving and resting behaviours. It is hoped that this novel technique might be useful in assessing challenges to narwhals relating to climate change and loss of sea ice.

Blue Tit by Geoff Henson via Flickr.

A study looking at the impacts of the Covid-19 lockdowns on the natural world, and recently published in Proceedings of the Royal Society B, has found that different bird species were affected in different ways. Many that were previously frequent visitors to parks and gardens were found to visit them less, as these spaces were increasingly occupied by people and their pets. Scavengers, however, such as gulls and corvids, were more likely to benefit from the change in human behaviour, feeding on the increased food waste that was left behind.

Conservation

A new Welsh Agriculture Bill was laid before the Senedd last week which would see Welsh farmers being paid to help to protect nature and fight climate change. Currently, farmers receive a share of public funding based largely on the amount of land they have. In the future, payments could depend on conservation work such as planting trees, restoring peat bogs and other essential habitats as well as utilising more sustainable farming methods.

A new study has shown that red kite chicks born during droughts, such as that of 2022 in England and Wales, often show permanent developmental damage which can make them smaller, more vulnerable to disease and less capable of hunting as adults. Although widely considered a conservation success story, this new research has led to concerns about the future of red kites in a continually warming environment.

Red Kite by Stefan Berndtsson via Flickr.

An updated Wildlife Comeback Report, commissioned by Rewilding Europe and published on 27th September, highlights the species that have made a comeback in Europe over the last four to five decades, and explores the situations that have allowed this to become possible. The report hopes to show that, given measures such as effective legal protection, improvement and connection of habitats, and dedicated species recovery and introductions, wildlife can both return and thrive.

The Sussex Bat Group and Vincent Wildlife Trust are working together in an urgent attempt to save a colony of endangered greater horseshoe bats discovered in West Sussex. The barn in which they live is in urgent need of repair – work which needs to be undertaken during the winter while the bats are hibernating in nearby caves. An appeal to raise £200,000 has been launched to cover the cost of the work.

New regulations introduced in the Republic of Ireland mean that basking sharks are now provided with special protection. As a result, it is now an offence to hunt or injure a basking shark, as well as interfere with or destroy its breeding or resting places. One of the largest species of shark, the basking shark is globally-threatened and faces a high risk of extinction.

On Saturday 1st October, new laws came into force which mean that beavers are now officially recognised as a native species in England and a European protected species. Studies have shown that the introduction of beavers into rivers can improve water quality, stabilise water flows, store carbon, and establish the types of habitat that are beneficial for many other species. The Wildlife Trusts are now calling for more urgency from the government in providing support to landowners involved in further reintroductions.