Diversity patterns along and across the chilean margin:a continental slope encompassing oxygen gradients and methane seep benthic habitats

MARINE ECOLOGY (BERLIN);
Mar. Ecol.-Evol. Persp.

dc.creatorQuiroga-Jamett, Eduardo
dc.creatorSellanes-López, Rogelio
dc.creatorNeira, Carlos
dc.creatorTeixido, Nuria
dc.date2017-04-27T18:54:01Z
dc.date2022-07-07T02:28:06Z
dc.date2017-04-27T18:54:01Z
dc.date2022-07-07T02:28:06Z
dc.date2010
dc.date.accessioned2023-08-22T01:44:48Z
dc.date.available2023-08-22T01:44:48Z
dc.identifier0
dc.identifierD04I1111
dc.identifierD04I1111
dc.identifierWOS:000275769300008
dc.identifier0173-9565
dc.identifierhttps://hdl.handle.net/10533/198024
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8307406
dc.descriptionIn the present study we review datasets available for the Chilean margin to assess the relationship between environmental (or habitat) heterogeneity and benthic diversity. Several factors, such as the presence of different water masses, including the oxygen-deficient Equatorial Sub-surface Waters (ESSW) at the continental shelf and upper slope, and the Antarctic Intermediate Waters (AIW) at mid slope depths appear to control the bathymetric distribution of benthic communities. The presence of methane seeps and an extended oxygen minimum zone (OMZ) add complexity to the benthic distribution patterns observed. All these factors generate environmental heterogeneity, which is predicted to affect the diversity patterns both along and across the Chilean continental margin. The response to these factors differs among different faunal size groups: meio-, macro-, and megafauna. Physiological adaptations to oxygen deficiency and constraints related to body size of each group seem to explain the larger-scale patterns observed, while sediment/habitat heterogeneity (e.g. at water mass boundaries, hardgrounds, biogeochemical patchiness, sediment organic content, grain size) may influence the local fauna diversity patterns.
dc.descriptionWe thank the Census of Marine Life and affiliated field project COMARGE, in particular Drs Lisa Levin, Myriam Sibuet, Lenaick Menot, Craig Smith, Ann Vanreusel and Andrew Gooday, who organized the workshop 'Roles of Habitat Heterogeneity in generating and maintaining Continental Margin Biodiversity', held at Scripps Institution of Oceanography, CA, USA. We are also indebted to the participants of the R/V Sonne (SO-156, PUCK expedition 2001), especially Drs Wolf Arntz, Victor A. Gallardo, Dieter Gerdes and Dierk Hebbeln. The expedition was funded by the German BMBF (grant No. 03GO156A). We also thank the captain and crew of the Chilean Navy's R/V Vidal Gormaz for support at sea during the SeepOx cruise, funded by FONDECYT project #1061217 to J.S. The comments and suggestions of three anonymous reviewers greatly helped to improve this manuscript. The COPAS (Universidad de Concepcion) and CIEP (Gobierno Regional de Aysen) centers are thanked for support to J.S. and E.Q., respectively, during the writing phase of this work.
dc.description24
dc.descriptionFONDEF
dc.descriptionsellanes@ucn.cl
dc.descriptionGerman BMBF [03GO156A]; FONDECYT [1061217]
dc.description1
dc.descriptionFONDEF
dc.description31
dc.languageENG
dc.publisherWILEY-BLACKWELL PUBLISHING, INC
dc.relationinstname: Conicyt
dc.relationreponame: Repositorio Digital RI2.0
dc.relationinstname: Conicyt
dc.relationreponame: Repositorio Digital RI2.0
dc.relationinfo:eu-repo/grantAgreement/Fondef/D04I1111
dc.relationinfo:eu-repo/semantics/dataset/hdl.handle.net/10533/93477
dc.relationhttps://doi.org/10.1111/j.1439-0485.2009.00332.x
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleDiversity patterns along and across the chilean margin:a continental slope encompassing oxygen gradients and methane seep benthic habitats
dc.titleMARINE ECOLOGY (BERLIN)
dc.titleMar. Ecol.-Evol. Persp.
dc.typeArticulo
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.coverageMALDEN


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