1. Arboreal camera trapping is a burgeoning method providing a novel
and effective technique to answer research questions across a variety of
ecosystems, and it has the capacity to improve our understanding of a
wide range of taxa. However, while terrestrial camera trapping has received much attention, there is little guidance for dealing with the
unique challenges of working in the arboreal realm.
2. Our review draws on the expertise of researchers from six continents
and the broader literature to investigate the advantages and
disadvantages of arboreal camera trapping, and challenges to consider
when using this technology. We also include mini-guides with detailed
information on the current arboreal camera trap literature, mounts used
to install arboreal cameras, tree climbing pointers and safety tips,
methods for deploying cameras without climbing, and tips for managing
interference with camera function.
3. We find that arboreal camera traps have been most commonly used in
the study of mammals in forests, however there is potential for this
method to be applied to a broad range of habitats including urban areas,
and taxa such as birds, amphibians, invertebrates, and plants. Methods
in arboreal camera trapping could be improved by developing a greater
understanding of the factors affecting detection of species. The most
common challenges of arboreal camera trapping are camera placement
and camera site access. These can be overcome by understanding
correct camera orientation, managing potential sources of interference in
front of cameras, utilizing appropriate cameras mounts, and training
researchers properly.
4. Given the benefits and opportunities presented by arboreal camera
trapping, it is likely to become an ever-more popular method of studying
arboreal species and systems. The information synthesized in this review
provides guidance for future studies to help direct more reliable and
robust ecological inferences from arboreal camera trapping.