@article {385,
	title = {Measuring and monitoring amphibian diversity in tropical forests. II. Estimating species richness from standardized transect censing},
	journal = {Ecotropica (Bonn)},
	volume = {10},
	number = {2},
	year = {2004},
	month = {04},
	pages = {85-99},
	abstract = {In the face of accelerating declines in amphibian populations, it is crucial to be able to effectively identify conservation priorities, both in terms of species and localities. Rapid assessment of amphibian community structure is therefore essential. Visual encounter Survey (VES) and standardized Visual transect sampling (SVTS) are becoming increasingly important in the measurement and monitoring of tropical anuran communities. In the present paper we compare the performance of SVTS along seven tropical forest transects where frog communities are currently being monitored: Lalut Birai (Borneo, Indonesia), Kakamega Forest National Reserve (Kenya, Africa), Tai National Park (Ivory Coast, Africa; two transects) and Ambolokopatrika-Betaolana Rainforest (Madagascar, three transects). We compared species lists generated from the transects with those from the entire study areas. Species richness was estimated using different incidence- and abundance-based richness estimators: ACE, ICE, Chao1, Chao2, Firsa-order jackknife, Michaelis Menton Estimators (MMMeans and MMRuns). Only, a few transect characteristics had a significant effect on species richness estimate accuracy. Species saturation was significantly enhanced by the number of transect walks (n(counts)). The relative standard deviation of the First-order jackknife estimator significantly decreased with an increasing daily species richness and a combined effect of daily species richness and the overall abundance of frogs. Comparison of transect: and forest: species lists show that terrestrial species are best represented by VES/SVTS. We recommend that a transect census Should be performed on at least 20 independent walks. Different species richness estimators should be applied simultaneously since their behavior/effectiveness under a wide array of transect parameters is still unknown.},
	url = {<Go to ISI>://PREV200510067140},
	author = {Veith, Michael and L{\"o}tters, Stefan and Andreone, Franco and R{\"o}del, Mark-Oliver}
}
