Small-scale spatial variation of macrobenthic community structure

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dc.acquisition-srcen_US
dc.call-noAcc# 8970en_US
dc.contract-noen_US
dc.contributor.authorMannino, A.en_US
dc.contributor.authorMontagna, P.A.en_US
dc.contributor.otherEstuariesen_US
dc.date.accessioned2010-02-15T17:36:00Z
dc.date.available2010-02-15T17:36:00Z
dc.date.issued1997en_US
dc.degreeen_US
dc.descriptionp. 159-173en_US
dc.description-otheren_US
dc.description.abstractExamination of small-scale spatial variation is essential to understanding the relationships between environmental factors and benthic community structure in estuaries. A sampling experiment was performed in October 1993 to measure infauna association with sediment composition and salinity gradients in Nueces Bay, Texas, USA. The bay was partitioned into four salinity zones and three sediment types. Higher densities of macrofauna were found in sediments with greater sand content and in areas with higher salinity. High diversity was also associated with high homogeneous salinity and greater sand content. Macrofauna biomass and diversity were positively correlated with bottom salinity, porewater salinity, and bottom dissolved inorganic nitrogen (DIN). Furthermore, species dominance shifted along the estuarine gradient. Statistical analyses revealed significant correlations for sediment characteristics with decreased total abundance and diversity. Increased salinity and DIN were correlated with increased total biomass, diversity, and macrofauna community structure. These physico-chemical variables are regulated by freshwater inflow, so inflow is an important factor influencing macrofauna community by indirectly influencing the physico-chemical environment.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeNueces Bayen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/26047
dc.latitudeen_US
dc.locationGBIC Collectionen_US
dc.longitudeen_US
dc.notesen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries8970.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectestuariesen_US
dc.subjectbayen_US
dc.subjectsediment compositionen_US
dc.subjectsediment analysisen_US
dc.subjectsalinity gradientsen_US
dc.subjectmacrofaunaen_US
dc.subjectdissolved chemicalsen_US
dc.subjectdensityen_US
dc.titleSmall-scale spatial variation of macrobenthic community structureen_US
dc.typeBooken_US
dc.universityen_US
dc.vol-issue20(1)en_US

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