Geographic variation in diversity of wave exposed rocky intertidal communities along central Chile

Along the coast of central Chile, geographic trends of diversity have been inferred from literature compilations and museum collections based on species range limits for some taxonomic groups. However, spatially-intensive field-based assessments of macrobenthic species richness are largely missing....

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Autores principales:	BROITMAN,BERNARDO R, VÉLIZ,FREDY, MANZUR,TATIANA, WIETERS,EVIE A, RANDALL FINKE,G, FORNES,PAULINA A, VALDIVIA,NELSON, NAVARRETE,SERGIO A
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2011
Materias:	biological diversity intertidal ecology latitudinal diversity gradient species richness
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000100011
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spelling	oai:scielo:S0716-078X20110001000112011-06-24Geographic variation in diversity of wave exposed rocky intertidal communities along central ChileBROITMAN,BERNARDO RVÉLIZ,FREDYMANZUR,TATIANAWIETERS,EVIE ARANDALL FINKE,GFORNES,PAULINA AVALDIVIA,NELSONNAVARRETE,SERGIO A biological diversity intertidal ecology latitudinal diversity gradient species richness Along the coast of central Chile, geographic trends of diversity have been inferred from literature compilations and museum collections based on species range limits for some taxonomic groups. However, spatially-intensive field-based assessments of macrobenthic species richness are largely missing. Over the course of a multiyear study (1998-2005), we characterized latitudinal patterns of rocky intertidal diversity at 18 sites along the coast of central Chile (29-36° S). At each site, the number of sessile and mobile macrobenthic species was quantified in 0.25 m² quadrats. Two estimators of local (alpha) diversity were used: observed local species richness, calculated from the asymptote of a species-rarefaction curve, and the Chao2 index, which takes into account the effect of rare species on estimates of local richness. We identified a total of 71 species belonging to 66 genera for a total of 86 taxa. The most diverse groups were herbivorous mollusks (27 taxa) and macroalgae (43 taxa). Diversity showed a complex spatial pattern with areas of high species richness interspersed with areas of low richness. In accordance with previous work, we found no trend in the number of herbivorous mollusks and an inverse and significant latitudinal gradient in the number of algal species. Our results highlight the need for taxonomically diverse assessments of biodiversity of the dominant taxa that conform intertidal communities.info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.84 n.1 20112011-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000100011en10.4067/S0716-078X2011000100011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	biological diversity intertidal ecology latitudinal diversity gradient species richness
spellingShingle	biological diversity intertidal ecology latitudinal diversity gradient species richness BROITMAN,BERNARDO R VÉLIZ,FREDY MANZUR,TATIANA WIETERS,EVIE A RANDALL FINKE,G FORNES,PAULINA A VALDIVIA,NELSON NAVARRETE,SERGIO A Geographic variation in diversity of wave exposed rocky intertidal communities along central Chile
description	Along the coast of central Chile, geographic trends of diversity have been inferred from literature compilations and museum collections based on species range limits for some taxonomic groups. However, spatially-intensive field-based assessments of macrobenthic species richness are largely missing. Over the course of a multiyear study (1998-2005), we characterized latitudinal patterns of rocky intertidal diversity at 18 sites along the coast of central Chile (29-36° S). At each site, the number of sessile and mobile macrobenthic species was quantified in 0.25 m² quadrats. Two estimators of local (alpha) diversity were used: observed local species richness, calculated from the asymptote of a species-rarefaction curve, and the Chao2 index, which takes into account the effect of rare species on estimates of local richness. We identified a total of 71 species belonging to 66 genera for a total of 86 taxa. The most diverse groups were herbivorous mollusks (27 taxa) and macroalgae (43 taxa). Diversity showed a complex spatial pattern with areas of high species richness interspersed with areas of low richness. In accordance with previous work, we found no trend in the number of herbivorous mollusks and an inverse and significant latitudinal gradient in the number of algal species. Our results highlight the need for taxonomically diverse assessments of biodiversity of the dominant taxa that conform intertidal communities.
author	BROITMAN,BERNARDO R VÉLIZ,FREDY MANZUR,TATIANA WIETERS,EVIE A RANDALL FINKE,G FORNES,PAULINA A VALDIVIA,NELSON NAVARRETE,SERGIO A
author_facet	BROITMAN,BERNARDO R VÉLIZ,FREDY MANZUR,TATIANA WIETERS,EVIE A RANDALL FINKE,G FORNES,PAULINA A VALDIVIA,NELSON NAVARRETE,SERGIO A
author_sort	BROITMAN,BERNARDO R
title	Geographic variation in diversity of wave exposed rocky intertidal communities along central Chile
title_short	Geographic variation in diversity of wave exposed rocky intertidal communities along central Chile
title_full	Geographic variation in diversity of wave exposed rocky intertidal communities along central Chile
title_fullStr	Geographic variation in diversity of wave exposed rocky intertidal communities along central Chile
title_full_unstemmed	Geographic variation in diversity of wave exposed rocky intertidal communities along central Chile
title_sort	geographic variation in diversity of wave exposed rocky intertidal communities along central chile
publisher	Sociedad de Biología de Chile
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000100011
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Geographic variation in diversity of wave exposed rocky intertidal communities along central Chile

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