Intact bacterial hopanoids as specific tracers of bacterial carbon in marine and estuarine environments

Simple item page
dc.contributor.advisorHarvey, H. Rodgeren_US
dc.contributor.authorTaylor, Karen Annen_US
dc.contributor.departmentMarine-Estuarine-Environmental Sciencesen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2009-10-06T06:06:40Z
dc.date.available2009-10-06T06:06:40Z
dc.date.issued2009en_US
dc.description.abstractIntact bacteriohopanepolyols (BHPs) and their degrative products were investigated in surface sediments and particulate organic matter from the Bering Sea, Western Arctic Ocean and Chesapeake Bay to trace the inputs of bacterial carbon sources and the dominant microbial processes operative during organic matter recycling. Despite cold temperatures and the dominance of diatoms, cyanobacteria are ubiquitous and inhabit the deeper layers of the euphotic zone in the Bering Sea, where their contributions to sediments were directly traced. As a small but important contribution to the total system chlorophyll, cyanobacteria represent a previously undocumented fraction of the organic carbon pool in this region. In the Western Arctic, soil derived bacterial sources were abundant and include a fraction that likely degraded on land prior to being transported into the Arctic Ocean. Bacterial signatures in Chesapeake Bay transition along the salinity gradient with intact hopanoids reflecting a diverse range of potential bacterial sources.en_US
dc.format.extent6435017 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/9552
dc.language.isoen_US
dc.subject.pqcontrolledChemistry, Organicen_US
dc.subject.pqcontrolledGeochemistryen_US
dc.subject.pquncontrolledbacteriaen_US
dc.subject.pquncontrolledChesapeake Bayen_US
dc.subject.pquncontrolledhopanoidsen_US
dc.subject.pquncontrolledorganic carbonen_US
dc.subject.pquncontrolledpolaren_US
dc.subject.pquncontrolledsedimenten_US
dc.titleIntact bacterial hopanoids as specific tracers of bacterial carbon in marine and estuarine environmentsen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Taylor_umd_0117N_10580.pdf
Size:
6.14 MB
Format:
Adobe Portable Document Format
Download

Collections

UMD Theses and Dissertations
Biology Theses and Dissertations
MEES Theses and Dissertations