Physical-Chemical processes and Patterns of Diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: An overview

The biological diversity of the Chilean marine ecosystem (CME) has recently become an issue of interest to Chilean scientists and authorities concerned about the impact of human activities and ongoing climate change on the structure, functioning, and sustainable use of this large marine region, reco...

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Autores principales:	Escribano,Rubén, Fernández,Miriam, Aranís,Antonio
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2003
Materias:	Biodiversity benthic Chilean marine ecosystem conservation pelagic
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382003000200008
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spelling	oai:scielo:S0717-653820030002000082005-04-22Physical-Chemical processes and Patterns of Diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: An overviewEscribano,RubénFernández,MiriamAranís,Antonio Biodiversity benthic Chilean marine ecosystem conservation pelagic The biological diversity of the Chilean marine ecosystem (CME) has recently become an issue of interest to Chilean scientists and authorities concerned about the impact of human activities and ongoing climate change on the structure, functioning, and sustainable use of this large marine region, recognized as one of the most productive ecosystems of the world`s is oceans. In this paper, the available information is examined in order to describe the major environmental characteristics of the CME and its associated flora and fauna, both in the benthic and pelagic systems, with the main goal of identifying environmental discontinuities and boundaries which may serve to define biogeographical units and characterize their biodiversity patterns. Physical and chemical processes are also described. In the pelagic system, three major regions may be identified: (1) the Northern Upwelling Region (18º-30º S), (2) the Central/Southern Upwelling Region (30º-42º S), and (3) the Austral Fjords Region (42º_55ºS). These could be defined as biogeographical units, though biodiversity patterns may still require further analyses. For the benthic system, two major provinces are distinguished: the Peru-Chile province (from Paita in Peru to Valparaíso in Chile) and the Magellanic province (Chiloé Island to Cape Horn). A clear transition zone at about 30ºS has also been described. The limits of these biogeographical regions, however, are not fixed and may vary seasonally and interannually. Diversity patterns, as well as dominant and key species inhabiting these biogeographic compartments, are described on the basis of the available data. The studies now required to obtain better information to describe diversity and to identify the underlying processes are stressed, as well as the needs for initiating large scale and long-term programs for monitoring species and processes in the CME that may allow future analyses of diversity patterns along the Chilean coast for conservation purposes.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.67 n.2 20032003-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382003000200008en10.4067/S0717-65382003000200008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Biodiversity benthic Chilean marine ecosystem conservation pelagic
spellingShingle	Biodiversity benthic Chilean marine ecosystem conservation pelagic Escribano,Rubén Fernández,Miriam Aranís,Antonio Physical-Chemical processes and Patterns of Diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: An overview
description	The biological diversity of the Chilean marine ecosystem (CME) has recently become an issue of interest to Chilean scientists and authorities concerned about the impact of human activities and ongoing climate change on the structure, functioning, and sustainable use of this large marine region, recognized as one of the most productive ecosystems of the world`s is oceans. In this paper, the available information is examined in order to describe the major environmental characteristics of the CME and its associated flora and fauna, both in the benthic and pelagic systems, with the main goal of identifying environmental discontinuities and boundaries which may serve to define biogeographical units and characterize their biodiversity patterns. Physical and chemical processes are also described. In the pelagic system, three major regions may be identified: (1) the Northern Upwelling Region (18º-30º S), (2) the Central/Southern Upwelling Region (30º-42º S), and (3) the Austral Fjords Region (42º_55ºS). These could be defined as biogeographical units, though biodiversity patterns may still require further analyses. For the benthic system, two major provinces are distinguished: the Peru-Chile province (from Paita in Peru to Valparaíso in Chile) and the Magellanic province (Chiloé Island to Cape Horn). A clear transition zone at about 30ºS has also been described. The limits of these biogeographical regions, however, are not fixed and may vary seasonally and interannually. Diversity patterns, as well as dominant and key species inhabiting these biogeographic compartments, are described on the basis of the available data. The studies now required to obtain better information to describe diversity and to identify the underlying processes are stressed, as well as the needs for initiating large scale and long-term programs for monitoring species and processes in the CME that may allow future analyses of diversity patterns along the Chilean coast for conservation purposes.
author	Escribano,Rubén Fernández,Miriam Aranís,Antonio
author_facet	Escribano,Rubén Fernández,Miriam Aranís,Antonio
author_sort	Escribano,Rubén
title	Physical-Chemical processes and Patterns of Diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: An overview
title_short	Physical-Chemical processes and Patterns of Diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: An overview
title_full	Physical-Chemical processes and Patterns of Diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: An overview
title_fullStr	Physical-Chemical processes and Patterns of Diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: An overview
title_full_unstemmed	Physical-Chemical processes and Patterns of Diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: An overview
title_sort	physical-chemical processes and patterns of diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: an overview
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2003
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382003000200008
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_version_	1718442051668803584

Physical-Chemical processes and Patterns of Diversity of the chilean eastern boundary pelagic and benthic marine ecosystems: An overview

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