Evaluating the performance of species richness estimators: sensitivity to sample grain size

Detalhes bibliográficos
Autor(a) principal: Hortal, Joaquín
Data de Publicação: 2006
Outros Autores: Borges, Paulo A. V., Gaspar, Clara
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.3/1401
Resumo: Copyright © 2006 British Ecological Society.
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spelling Evaluating the performance of species richness estimators: sensitivity to sample grain sizeAzoresEpigean ArthropodsGrain SizeSampling EffortSpecies Richness EstimationCopyright © 2006 British Ecological Society.1. Fifteen species richness estimators (three asymptotic based on species accumulation curves, 11 nonparametric, and one based in the species-area relationship) were compared by examining their performance in estimating the total species richness of epigean arthropods in the Azorean Laurisilva forests. Data obtained with standardized sampling of 78 transects in natural forest remnants of five islands were aggregated in seven different grains (i.e. ways of defining a single sample): islands, natural areas, transects, pairs of traps, traps, database records and individuals to assess the effect of using different sampling units on species richness estimations. 2. Estimated species richness scores depended both on the estimator considered and on the grain size used to aggregate data. However, several estimators (ACE, Chao1, Jackknife1 and 2 and Bootstrap) were precise in spite of grain variations. Weibull and several recent estimators [proposed by Rosenzweig et al. (Conservation Biology, 2003, 17, 864-874), and Ugland et al. (Journal of Animal Ecology, 2003, 72, 888-897)] performed poorly. 3. Estimations developed using the smaller grain sizes (pair of traps, traps, records and individuals) presented similar scores in a number of estimators (the above-mentioned plus ICE, Chao2, Michaelis-Menten, Negative Exponential and Clench). The estimations from those four sample sizes were also highly correlated. 4. Contrary to other studies, we conclude that most species richness estimators may be useful in biodiversity studies. Owing to their inherent formulas, several nonparametric and asymptotic estimators present insensitivity to differences in the way the samples are aggregated. Thus, they could be used to compare species richness scores obtained from different sampling strategies. Our results also point out that species richness estimations coming from small grain sizes can be directly compared and other estimators could give more precise results in those cases. We propose a decision framework based on our results and on the literature to assess which estimator should be used to compare species richness scores of different sites, depending on the grain size of the original data, and of the kind of data available (species occurrence or abundance data).Wiley-BlackwellRepositório da Universidade dos AçoresHortal, JoaquínBorges, Paulo A. V.Gaspar, Clara2012-06-12T10:38:39Z2006-012012-06-07T14:11:18Z2006-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.3/1401engHortal, J.; Borges, P.A.V.; Gaspar, C.. Evaluating the performance of species richness estimators: sensitivity to sample grain size. "JOURNAL OF ANIMAL ECOLOGY", 75(1), 274-287, 2006.0021-8790 (Print)info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-12-20T14:29:04Zoai:repositorio.uac.pt:10400.3/1401Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:24:14.435398Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Evaluating the performance of species richness estimators: sensitivity to sample grain size
title Evaluating the performance of species richness estimators: sensitivity to sample grain size
spellingShingle Evaluating the performance of species richness estimators: sensitivity to sample grain size
Hortal, Joaquín
Azores
Epigean Arthropods
Grain Size
Sampling Effort
Species Richness Estimation
title_short Evaluating the performance of species richness estimators: sensitivity to sample grain size
title_full Evaluating the performance of species richness estimators: sensitivity to sample grain size
title_fullStr Evaluating the performance of species richness estimators: sensitivity to sample grain size
title_full_unstemmed Evaluating the performance of species richness estimators: sensitivity to sample grain size
title_sort Evaluating the performance of species richness estimators: sensitivity to sample grain size
author Hortal, Joaquín
author_facet Hortal, Joaquín
Borges, Paulo A. V.
Gaspar, Clara
author_role author
author2 Borges, Paulo A. V.
Gaspar, Clara
author2_role author
author
dc.contributor.none.fl_str_mv Repositório da Universidade dos Açores
dc.contributor.author.fl_str_mv Hortal, Joaquín
Borges, Paulo A. V.
Gaspar, Clara
dc.subject.por.fl_str_mv Azores
Epigean Arthropods
Grain Size
Sampling Effort
Species Richness Estimation
topic Azores
Epigean Arthropods
Grain Size
Sampling Effort
Species Richness Estimation
description Copyright © 2006 British Ecological Society.
publishDate 2006
dc.date.none.fl_str_mv 2006-01
2006-01-01T00:00:00Z
2012-06-12T10:38:39Z
2012-06-07T14:11:18Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.3/1401
url http://hdl.handle.net/10400.3/1401
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Hortal, J.; Borges, P.A.V.; Gaspar, C.. Evaluating the performance of species richness estimators: sensitivity to sample grain size. "JOURNAL OF ANIMAL ECOLOGY", 75(1), 274-287, 2006.
0021-8790 (Print)
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley-Blackwell
publisher.none.fl_str_mv Wiley-Blackwell
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
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