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Mar Pollut Bull ; 73(2): 452-62, 2013 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-23473095

RESUMO

Extensive CO2 vents have been discovered in the Wagner Basin, northern Gulf of California, where they create large areas with lowered seawater pH. Such areas are suitable for investigations of long-term biological effects of ocean acidification and effects of CO2 leakage from subsea carbon capture storage. Here, we show responses of benthic foraminifera to seawater pH gradients at 74-207m water depth. Living (rose Bengal stained) benthic foraminifera included Nonionella basispinata, Epistominella bradyana and Bulimina marginata. Studies on foraminifera at CO2 vents in the Mediterranean and off Papua New Guinea have shown dramatic long-term effects of acidified seawater. We found living calcareous benthic foraminifera in low pH conditions in the northern Gulf of California, although there was an impoverished species assemblage and evidence of post-mortem test dissolution.


Assuntos
Adaptação Fisiológica , Dióxido de Carbono/toxicidade , Foraminíferos/fisiologia , Água do Mar/química , Poluentes Químicos da Água/toxicidade , Ecossistema , Concentração de Íons de Hidrogênio , México
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