Effectiveness of camera traps for the detection of mammals: different effects

What is it about?

Detecting terrestrial mammals in the wild can be challenging, but camera trapping has emerged as a popular non-invasive technique. In our study, we deployed 20 camera traps in Os Montes do Invernadeiro Natural Park in Galicia, Spain, from 2016 to 2020, collecting a total of 8,044 images and videos. We analyzed the frequency of mammal detections based on various factors such as season, lunar cycle, habitat, and the sex of the animals. Our findings revealed that certain conditions significantly influenced detection rates. For instance, more records were obtained in deciduous and pine forests during summer and autumn, particularly on nights with a waxing or waning moon. Predatory species like the Iberian wolf and red fox were more frequently spotted at crossroads, while prey species like wild boar and red deer tended to avoid these areas. Overall, our research highlights the importance of specific climatic and environmental factors in optimizing camera trapping studies for different mammal species. By understanding these optimal conditions, we can improve the efficiency of wildlife monitoring efforts and reduce the sampling effort needed to study these animals effectively.

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Why is it important?

Our multivariable approach provides a deeper understanding of the dynamics within the Iberian Peninsula ecosystem, and it represents a valuable methodology for enhancing camera trap techniques.

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