NHBS is working with the Luxembourg Institute of Science and Technology (LIST) to develop an innovative approach to amphibian monitoring using NEWTCAM, an underwater camera device. In collaboration, we have been refining and testing NEWTCAM to evaluate its potential for biodiversity monitoring. In this update, we share the latest developments in this exciting project.
NEWTCAM Overview
The NEWTCAM is an open underwater tunnel with an integrated camera and lighting system used to automatically capture high resolution images and video of aquatic animals. Specifically developed for Great Crested Newt (Triturus cristatus) surveys, the NEWTCAM works by taking an image of a newt’s underside. These images enable the determination of sex, development stage and individual identification due to the unique spot patterns on each animal. It can be left unattended in the water for several days minimising animal handling, greatly improving survey effort, detection rates, and reducing stress on the animals. The AI-based processing method is classifying images by species and gender (for the four newt species found in the UK), but does not provide population estimates. Individuation (for population estimates) require more AI developments.
The project has two primary aims: to improve the functionality, durability and versatility of the NEWTCAM and to assess its value as a user-friendly freshwater wildlife monitoring method. These aims will be accomplished through a programme of technological development work at LIST laboratories and the NHBS workshop, followed by field experiments conducted by LIST and early user trials. These experiments will test the reliability and robustness of the NEWTCAM for amphibian monitoring and surveying, the NEWTCAM’s ability to detect multiple species and life stages in various habitats, and whether the data produced is sufficient in producing population estimates.
2024 Update
Since the initial field trials, we have continued to refine the NEWTCAM’s design and outer housing, making improvements ahead of a second round of trials.
During the summer, 24 NEWTCAM units were distributed for field trials across Europe, Asia and America, with one unit in California. These trials have the following objectives:
- Test the latest version of the NEWTCAM in diverse environments
- Gather user feedback on the NEWTCAM design
- Improve knowledge on the scope of species that can be observed
During this time, two NEWTCAM devices were deployed in a pond in Luxembourg from March to September, and have successfully produced a time series of larval, juvenile and adult Great Crested Newts. Additionally, a trial in Kent, UK observed adult Great Crested Newts later in the season.
Additionally, our early users have successfully captured first observations of the Marbled Newt (Triturus marmoratus) and Hong Kong Warty Newt (Paramesotriton hongkongensis) with NEWTCAM, and we have observed natural foraging behaviours in Great Crested Newts without human interference.
These initial trials have also highlighted NEWTCAMs potential for monitoring other aquatic species beyond amphibians. Early users have reported observations on a variety of taxa including water beetles and fish, highlighting the potential versatility of the device.
What’s Next?
We will continue to gather user feedback from the ongoing field trials with the first batch of NEWTCAM units to guide further development of the device. Additional field trials will be carried out in the spring of 2025, with the final product planned to enter production by the end of the year.
