Show simple item record

dc.date.accessioned 2017-09-29T11:52:11Z
dc.date.available 2017-09-29T11:52:11Z
dc.identifier.uri https://digital.cic.gba.gob.ar/handle/11746/6212
dc.title Environmental preferences of brachiopods and bivalves across major climatic changes during the late Paleozoic ice age (Pennsylvanian, western Argentina) en
dc.type Artículo es
dcterms.abstract During the late Palaeozoic ice age (LPIA), ice-proximal marine regional communities record contrastingresponses to climate change compared to ice-distal communities. However, there is still much to be understood in distalregions in order to fully understand the palaeobiological consequences of the LPIA. Here, were analyse brachiopod andbivalve environmental preferences along the bathymetric gradient during a major glacial event and the subsequent non-glacial interval in western Argentina. Median environmentalbreadths did not change with the reassembly of communitiesduring the non-glacial interval. Moreover, bivalves and brachiopod immigrants show similar environmental breadths although they tend to have immigrated from different palaeogeographical regions. These patterns reinforce the idea thatthe worldwide marine fauna was probably culled of stenotopic taxa during the LPIA. On the other hand, analysis of the preferred depths of survivors and immigrants sheds light on thesubstantial modification of the bathymetric diversity gradient.Among different possible explanations, the immigration oftaxa with affinities for deep environments is the only one supported. In addition, results underscore the observation thatthe higher turnover in the offshore environment was probablydriven by immigration rather than extinction. Finally, stabilityin environmental preferences at a regional scale is not mirrored by stability in survivors’ individual preferences, becausesurvivors’ preferred depth is not correlated during the glacialand non-glacial intervals. Moreover, the amount of change insurvivors preferred depth is not related to their environmentalbreadth, nor to their occupancy. These patterns suggest: (1)instability in realized niches; and (2) individual responses ofsurvivor genera en
dcterms.extent 14 p. es
dcterms.issued 2016-08-08
dcterms.language Inglés es
dcterms.license Attribution-NonCommercial-NoDerivatives 4.0 International (BY-NC-ND 4.0) es
dcterms.subject brachiopods en
dcterms.subject bivalves en
dcterms.subject environmental preferences en
dcterms.subject late paleozoic ice age en
dcterms.subject climate en
dcterms.subject environmental breadth en
cic.version info:eu-repo/semantics/submittedVersion es
dcterms.creator.author Balseiro, Diego es
dcterms.creator.author Halpern, Karen es
cic.lugarDesarrollo Instituto de Geología de Costas y Cuaternario es
cic.lugarDesarrollo Centro de Investigaciones en Ciencias de la Tierra es
dcterms.subject.materia Geología es
dcterms.identifier.url Recurso Completo es
dcterms.identifier.other DOI: 10.1111/pala.12259 es
dcterms.isPartOf.issue vol. 59 no. 6 es
dcterms.isPartOf.series Palaeontology es
cic.isPeerReviewed true es
cic.isFulltext true es


Files

  • Icon

    Documento Completo 

    PDF file (626.3Kb)

  • This item appears in the following Collection(s)

    Show simple item record