IUCN / SSC Cat Specialist Group - Digital Cat Library |
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| Sanderson, J. | |
| Tropical Ecology, Assessment, and Monitoring (TEAM) Initiative - Camera trapping protocol | |
| Full Book | |
A new generation of camera phototraps and the use of well-developed capture-recapture models have led to an increase in the use of remote surveying and monitoring methodologies for terrestrial species. Population estimates can now be made for individually identifiable species and relative abundance indices can be calculated for other species. To monitor shy or secretive species indirect methods such as camera phototraps have been used. Camera phototraps and powerful statistical methods have been employed to quantitatively monitor populations of cryptic, wide-ranging carnivores when individuals of the species can be identified. Concurrently, prey populations can also be monitored using camera phototraps. Camera phototraps have also enabled more accurate estimates of species richness, species diversity, total mammalian biomass, and the spatial variation and population size of some mammals. With long-term use camera phototraps enable monitoring of changes in populations over time. Activity patterns can be determined, even for mammals that cannot be individually identified. To aid law enforcement activities, camera phototraps have been used to identify individual humans committing illegal acts in protected areas. Both closed (no immigration or emigration) and open statistical models can be used to estimate survival and recruitment in mammals that can be individually identified with camera. With sustained use camera phototraps can be used as an early warning system to detect changes in number, composition, and relative abundance beyond what is background noise. |
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