Patterns and breaking points in the distribution of benthic algae along the temperate Pacific coast of South America

According to biogeographic studies made two decades ago, marine benthic algal species of the Pacific temperate coast of South America could be grouped into five components according to their geographic affinities. Each of these components was distributed differentially along the coastline between 4º...

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Autores principales:	MENESES,ISABEL, SANTELICES,BERNABE
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2000
Materias:	Distribution patterns breaking points species composition temperate Pacific
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400006
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spelling	oai:scielo:S0716-078X20000004000062001-04-09Patterns and breaking points in the distribution of benthic algae along the temperate Pacific coast of South AmericaMENESES,ISABELSANTELICES,BERNABE Distribution patterns breaking points species composition temperate Pacific According to biogeographic studies made two decades ago, marine benthic algal species of the Pacific temperate coast of South America could be grouped into five components according to their geographic affinities. Each of these components was distributed differentially along the coastline between 4º and 56ºS and thus, their contribution to the overall flora varied depending on the latitude. Species composition changed at specific latitudes in such a way that three groups could be observed: from 4 to 6ºS, from 6 to 30ºS and from 30 to 55ºS. Since 1980, new information on marine algae along this coastline allows a review of the previous phytogeographic characterization. The presence/absence of algal species, separated by division and geographic affinity, was recorded for each degree of latitude from 4º to 56ºS and used to analyze the similarity in species composition and possible changes in distribution patterns. Results show the same five geographic components detected 20 years ago with similar distributions. Differences observed are a further southward intrusion of subtropical elements, a decrease in endemic species number and relative contribution to the flora at the southern tip of South America, and two breaking points in species composition at 12º and 42ºS. Another two breaking points occur at 20ºS and at 33ºS in Phaeophyta and Rhodophyta species composition respectively. The inclusion of single-record species does not affect significantly the distribution of species along this coastlineinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.73 n.4 20002000-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400006en10.4067/S0716-078X2000000400006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Distribution patterns breaking points species composition temperate Pacific
spellingShingle	Distribution patterns breaking points species composition temperate Pacific MENESES,ISABEL SANTELICES,BERNABE Patterns and breaking points in the distribution of benthic algae along the temperate Pacific coast of South America
description	According to biogeographic studies made two decades ago, marine benthic algal species of the Pacific temperate coast of South America could be grouped into five components according to their geographic affinities. Each of these components was distributed differentially along the coastline between 4º and 56ºS and thus, their contribution to the overall flora varied depending on the latitude. Species composition changed at specific latitudes in such a way that three groups could be observed: from 4 to 6ºS, from 6 to 30ºS and from 30 to 55ºS. Since 1980, new information on marine algae along this coastline allows a review of the previous phytogeographic characterization. The presence/absence of algal species, separated by division and geographic affinity, was recorded for each degree of latitude from 4º to 56ºS and used to analyze the similarity in species composition and possible changes in distribution patterns. Results show the same five geographic components detected 20 years ago with similar distributions. Differences observed are a further southward intrusion of subtropical elements, a decrease in endemic species number and relative contribution to the flora at the southern tip of South America, and two breaking points in species composition at 12º and 42ºS. Another two breaking points occur at 20ºS and at 33ºS in Phaeophyta and Rhodophyta species composition respectively. The inclusion of single-record species does not affect significantly the distribution of species along this coastline
author	MENESES,ISABEL SANTELICES,BERNABE
author_facet	MENESES,ISABEL SANTELICES,BERNABE
author_sort	MENESES,ISABEL
title	Patterns and breaking points in the distribution of benthic algae along the temperate Pacific coast of South America
title_short	Patterns and breaking points in the distribution of benthic algae along the temperate Pacific coast of South America
title_full	Patterns and breaking points in the distribution of benthic algae along the temperate Pacific coast of South America
title_fullStr	Patterns and breaking points in the distribution of benthic algae along the temperate Pacific coast of South America
title_full_unstemmed	Patterns and breaking points in the distribution of benthic algae along the temperate Pacific coast of South America
title_sort	patterns and breaking points in the distribution of benthic algae along the temperate pacific coast of south america
publisher	Sociedad de Biología de Chile
publishDate	2000
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400006
work_keys_str_mv	AT menesesisabel patternsandbreakingpointsinthedistributionofbenthicalgaealongthetemperatepacificcoastofsouthamerica AT santelicesbernabe patternsandbreakingpointsinthedistributionofbenthicalgaealongthetemperatepacificcoastofsouthamerica
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Patterns and breaking points in the distribution of benthic algae along the temperate Pacific coast of South America

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