Ana Luísa Barros, Sandra Alcobia, Paula Gonçalves, Darryl I. MacKenzie, Margarida Santos-Reis
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引用次数: 0
Abstract
Camera-trapping is considered a cost-efficient method to monitor wildlife, but relevant performance constraints remain. We assessed performance and cost-benefit for 2 recent technological innovations: (i) a wireless transmission system where cameras communicate in a network, and (ii) using solar panels as a camera's sole power supply. The maximum distance between cameras that ensured wireless connection varied between 2 km in open habitats and 335 m in forest habitats with dense tree cover. The cost of using the wireless transmission system was lower for surveys run for >45 days and for >15 sampling units (i.e., camera-trap sites). For surveys longer than 15 days, using the wireless transmission system required, on average, 8 fewer days of fieldwork. We measured the performance of the solar panels in terms of capture probability, and the solar-powered cameras (β = −0.015 ± 0.01 in the log scale) outperformed battery-powered cameras (β = −0.103 ± 0.005) as capture rate decreased more slowly, particularly for nighttime events (difference in capture probability of the solar-powered relative to the battery-powered cameras at night, β = 0.09 ± 0.01). We consider that, although camera-traps with wireless transmission can provide a return on investment for a wide range of survey designs, the constraints on maximum distance for transmission are a limitation. Despite the higher cost, we recommend solar-powered camera-traps as they had improved performance with a higher proportion of species events captured than by battery-powered cameras.
期刊介绍：
The Wildlife Society Bulletin is a journal for wildlife practitioners that effectively integrates cutting edge science with management and conservation, and also covers important policy issues, particularly those that focus on the integration of science and policy. Wildlife Society Bulletin includes articles on contemporary wildlife management and conservation, education, administration, law enforcement, and review articles on the philosophy and history of wildlife management and conservation. This includes:
Reports on practices designed to achieve wildlife management or conservation goals.
Presentation of new techniques or evaluation of techniques for studying or managing wildlife.
Retrospective analyses of wildlife management and conservation programs, including the reasons for success or failure.
Analyses or reports of wildlife policies, regulations, education, administration, law enforcement.
Review articles on the philosophy and history of wildlife management and conservation. as well as other pertinent topics that are deemed more appropriate for the Wildlife Society Bulletin than for The Journal of Wildlife Management.
Book reviews that focus on applied research, policy or wildlife management and conservation.
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