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|Title: ||Time means… species! On the performance of species richness estimators and different sampling schemes.|
|Authors: ||Salgueiro, Pedro|
Rabaça, João E.
|Keywords: ||time of day effects|
|Issue Date: ||2010|
|Citation: ||Salgueiro, P., Costa, H. & Rabaça, J.E. 2010. Time means… species! On the performance of species richness estimators and different sampling schemes. In Bermejo, A. (Ed.) Bird Numbers 2010 “Monitoring, indicators and targets”. Book of abstracts of the 18th International Conference of the European Bird Census Council. Cáceres, Spain. Pp: 53-54.|
|Abstract: ||Species richness is accounted as the oldest
and the simplest concept of species diversity, being widely used in scientific grounds for monitoring and assessment purposes. However, the challenge is to correctly estimate the number of species. Not only estimates should be accurate, but also should be precise for correct assessment of a system’s state and
trend. This study aims to determine differences between estimates derived from different sampling schemes and to evaluate the performance of observed richness and three non-parametric estimators frequently used (first-order Jackknife, second-order Jackknife and second-order Chao) by means of bias, inaccuracy and imprecision. In overall, our final goal is to establish recommendations for bird monitoring surveys and assessments.|
|Appears in Collections:||MED - Comunicações - Em Congressos Científicos Internacionais|
BIO - Comunicações - Em Congressos Científicos Internacionais
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