The validity and precision of spotlighting for surveying desert mammal communities

Autor:	Nigel Dunstone, R.A. Freer, Dawn M. Scott, S. Waite, Tom Maddox
Rok vydání:	2005
Předmět:	Moonlight Ecology Spotlighting Desert (particle physics) Environmental science Mammal Relative precision Physical geography Transect Ecology Evolution Behavior and Systematics Earth-Surface Processes
Zdroj:	Journal of Arid Environments. 61:589-601
ISSN:	0140-1963
Popis:	We investigated the validity of spotlighting techniques for surveying and monitoring desert mammal populations by determining the effect of repeating spotlight transects on the relative precision of density estimates. Precision was modelled by calculating cumulative mean density and associated coefficient of variation. The effect of moonlight at the time of surveying was also investigated. The results show that spotlighting is a valid technique for monitoring some species, however the number of transects required to obtain pre-defined adequate levels of precision is species-dependent. Reasons for these findings are discussed and recommendations for future spotlight surveys for monitoring desert mammal populations are given.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3192d595f83ce852d524a6cc362fe73e https://doi.org/10.1016/j.jaridenv.2004.09.008 Zobrazit plný text záznamu Full Text from ScienceDirect