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Conference Paper: Influences of Holocene environmental changes on submarine cave ostracode community and species diversity

TitleInfluences of Holocene environmental changes on submarine cave ostracode community and species diversity
Authors
Issue Date2014
PublisherThe Meeting.
Citation
The 1st Meeting of Asian Ostracodologists, Seoul, Korea, 23-27 June 2014. In Abstract Book, 2014, p. 5 How to Cite?
AbstractSubmarine cave is a unique ecosystem where some “living fossil” species have been discovered, probably due to its dark and isolated nature. However, the long-term community history of organisms living in submarine cave remains poorly understood. Here, fossil ostracode faunal and diversity changes during the past 7,000 years are examined with the use of 2 sediment cores obtained from Daidokutsu submarine cave in Okinawa, Japan. Ostracode fauna in these cores is dominated by shallow marine reef species (e.g. Loxoconcha japonica, Xestoleberis spp., Paranesidea spp., and Cytherella spp.), besides, it includes some typical submarine cave species (e.g. Kasella ryukyuensis, Cardobairdia sp., Microcythere spp., and Bythocypris sp.). TempOral Presentation changes in relative abundances of typical submarine cave species and shallow marine reef species reflect changes in connectivity between cave and the outside shallow marine reef environment during the Holocene. Based on multi-dimensional scaling and cluster analysis, the faunal composition changes in the cores can be divided into 3 stages, which are possibly in the sequence of 1) cave environment connected with open ocean, 2) transitional stage, to 3) cave environment with limited exchange with open ocean. These results suggest that Daidokutsu cave has gradually changed from a relatively open cave to current dark and enclosed cave, and such dark and enclosed cave environment has only had a history of around 1000 years.
DescriptionOral Presentation
Persistent Identifierhttp://hdl.handle.net/10722/199684

 

DC FieldValueLanguage
dc.contributor.authorChiu, RWTen_US
dc.contributor.authorYasuhara, Men_US
dc.contributor.authorIwatani, Hen_US
dc.contributor.authorFujita, Ken_US
dc.contributor.authorKitamura, Aen_US
dc.date.accessioned2014-07-22T01:28:09Z-
dc.date.available2014-07-22T01:28:09Z-
dc.date.issued2014en_US
dc.identifier.citationThe 1st Meeting of Asian Ostracodologists, Seoul, Korea, 23-27 June 2014. In Abstract Book, 2014, p. 5en_US
dc.identifier.urihttp://hdl.handle.net/10722/199684-
dc.descriptionOral Presentation-
dc.description.abstractSubmarine cave is a unique ecosystem where some “living fossil” species have been discovered, probably due to its dark and isolated nature. However, the long-term community history of organisms living in submarine cave remains poorly understood. Here, fossil ostracode faunal and diversity changes during the past 7,000 years are examined with the use of 2 sediment cores obtained from Daidokutsu submarine cave in Okinawa, Japan. Ostracode fauna in these cores is dominated by shallow marine reef species (e.g. Loxoconcha japonica, Xestoleberis spp., Paranesidea spp., and Cytherella spp.), besides, it includes some typical submarine cave species (e.g. Kasella ryukyuensis, Cardobairdia sp., Microcythere spp., and Bythocypris sp.). TempOral Presentation changes in relative abundances of typical submarine cave species and shallow marine reef species reflect changes in connectivity between cave and the outside shallow marine reef environment during the Holocene. Based on multi-dimensional scaling and cluster analysis, the faunal composition changes in the cores can be divided into 3 stages, which are possibly in the sequence of 1) cave environment connected with open ocean, 2) transitional stage, to 3) cave environment with limited exchange with open ocean. These results suggest that Daidokutsu cave has gradually changed from a relatively open cave to current dark and enclosed cave, and such dark and enclosed cave environment has only had a history of around 1000 years.-
dc.languageengen_US
dc.publisherThe Meeting.-
dc.relation.ispartof1st Meeting of Asian Ostracodologists Abstract Booken_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleInfluences of Holocene environmental changes on submarine cave ostracode community and species diversityen_US
dc.typeConference_Paperen_US
dc.identifier.emailYasuhara, M: yasuhara@hku.hken_US
dc.identifier.emailIwatani, H: iwatani@hku.hken_US
dc.identifier.authorityYasuhara, M=rp01474en_US
dc.description.naturepostprint-
dc.identifier.hkuros231444en_US
dc.identifier.spage5-
dc.identifier.epage5-
dc.publisher.placeKorea-

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