Latitudinal diversity patterns of Chilean coastal fishes: searching for causal processes

BACKGROUND: Several particular aspects of diversity patterns of Chilean littoral fishes are still poorly understood, and existing studies within this scope are fundamentally based on bibliographic compilations. In this study, we use empirical data to assess whether the diversity patterns of fish fau...

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Autores principales:	Navarrete,Arturo H, Lagos,Nelson A, Patricio Ojeda,F
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2014
Materias:	αand β-diversity Endemic species Intertidal fishes Latitudinal diversity gradient Marine biogeography
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100002
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spelling	oai:scielo:S0716-078X20140001000022015-07-23Latitudinal diversity patterns of Chilean coastal fishes: searching for causal processesNavarrete,Arturo HLagos,Nelson APatricio Ojeda,F αand β-diversity Endemic species Intertidal fishes Latitudinal diversity gradient Marine biogeography BACKGROUND: Several particular aspects of diversity patterns of Chilean littoral fishes are still poorly understood, and existing studies within this scope are fundamentally based on bibliographic compilations. In this study, we use empirical data to assess whether the diversity patterns of fish fauna along 4000 km of the Chilean coast (20° - 55° S)can be explained in relation to the environmental latitudinal gradient. Fish were collected from intertidal pools and subtidal habitats (<35 m). Analyses focused on the spatial scales of diversity patterns and latitudinal breaks in species diversity, comparing the observed patterns among intertidal and subtidal habitats. Correlations between variance in environmental factors and species richness were calculated. RESULTS: Richness was positively autocorrelated at spatial scales <1000 km. Overall, richness was observed to progressively decrease toward higher latitudes, but values for intertidal fish in particular decreased towards the north and south from the point of maximum richness. This is a pattern that has already been recorded for other intertidal organisms. Similarity was seen to decrease with distance, and turnover point for intertidal fishes was high around 30° - 32° S, while northern species disappeared between 36° - 39° S. Subtidally, there is an invasion of subantarctic species between 53° - 55° S. CONCLUSIONS: Environmental variables are significant to the diversity patterns recorded. However, richness variations could result from many types of variables acting together and not from one single factor.info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.87 20142014-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100002en10.1186/0717-6317-87-2
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	αand β-diversity Endemic species Intertidal fishes Latitudinal diversity gradient Marine biogeography
spellingShingle	αand β-diversity Endemic species Intertidal fishes Latitudinal diversity gradient Marine biogeography Navarrete,Arturo H Lagos,Nelson A Patricio Ojeda,F Latitudinal diversity patterns of Chilean coastal fishes: searching for causal processes
description	BACKGROUND: Several particular aspects of diversity patterns of Chilean littoral fishes are still poorly understood, and existing studies within this scope are fundamentally based on bibliographic compilations. In this study, we use empirical data to assess whether the diversity patterns of fish fauna along 4000 km of the Chilean coast (20° - 55° S)can be explained in relation to the environmental latitudinal gradient. Fish were collected from intertidal pools and subtidal habitats (<35 m). Analyses focused on the spatial scales of diversity patterns and latitudinal breaks in species diversity, comparing the observed patterns among intertidal and subtidal habitats. Correlations between variance in environmental factors and species richness were calculated. RESULTS: Richness was positively autocorrelated at spatial scales <1000 km. Overall, richness was observed to progressively decrease toward higher latitudes, but values for intertidal fish in particular decreased towards the north and south from the point of maximum richness. This is a pattern that has already been recorded for other intertidal organisms. Similarity was seen to decrease with distance, and turnover point for intertidal fishes was high around 30° - 32° S, while northern species disappeared between 36° - 39° S. Subtidally, there is an invasion of subantarctic species between 53° - 55° S. CONCLUSIONS: Environmental variables are significant to the diversity patterns recorded. However, richness variations could result from many types of variables acting together and not from one single factor.
author	Navarrete,Arturo H Lagos,Nelson A Patricio Ojeda,F
author_facet	Navarrete,Arturo H Lagos,Nelson A Patricio Ojeda,F
author_sort	Navarrete,Arturo H
title	Latitudinal diversity patterns of Chilean coastal fishes: searching for causal processes
title_short	Latitudinal diversity patterns of Chilean coastal fishes: searching for causal processes
title_full	Latitudinal diversity patterns of Chilean coastal fishes: searching for causal processes
title_fullStr	Latitudinal diversity patterns of Chilean coastal fishes: searching for causal processes
title_full_unstemmed	Latitudinal diversity patterns of Chilean coastal fishes: searching for causal processes
title_sort	latitudinal diversity patterns of chilean coastal fishes: searching for causal processes
publisher	Sociedad de Biología de Chile
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100002
work_keys_str_mv	AT navarretearturoh latitudinaldiversitypatternsofchileancoastalfishessearchingforcausalprocesses AT lagosnelsona latitudinaldiversitypatternsofchileancoastalfishessearchingforcausalprocesses AT patricioojedaf latitudinaldiversitypatternsofchileancoastalfishessearchingforcausalprocesses
_version_	1718439689223929856

Latitudinal diversity patterns of Chilean coastal fishes: searching for causal processes

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