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dc.contributor.authorCrump, Byron C.
dc.contributor.authorAdams, Heather E.
dc.contributor.authorHobbie, John E.
dc.contributor.authorKling, George W.
dc.date.accessioned2007-08-13T15:14:45Z
dc.date.available2007-08-13T15:14:45Z
dc.date.issued2007-06
dc.identifier.citationEcology 88 (2007): 1365-1378en
dc.identifier.urihttp://hdl.handle.net/1912/1766
dc.descriptionAuthor Posting. © Ecological Society of America, 2007. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Ecology 88 (2007): 1365–1378, doi:10.1890/06-0387en
dc.description.abstractBacterioplankton community composition was compared across 10 lakes and 14 streams within the catchment of Toolik Lake, a tundra lake in Arctic Alaska, during seven surveys conducted over three years using denaturing gradient gel electrophoresis (DGGE) of PCR-amplified rDNA. Bacterioplankton communities in streams draining tundra were very different than those in streams draining lakes. Communities in streams draining lakes were similar to communities in lakes. In a connected series of lakes and streams, the stream communities changed with distance from the upstream lake and with changes in water chemistry, suggesting inoculation and dilution with bacteria from soil waters or hyporheic zones. In the same system, lakes shared similar bacterioplankton communities (78% similar) that shifted gradually down the catchment. In contrast, unconnected lakes contained somewhat different communities (67% similar). We found evidence that dispersal influences bacterioplankton communities via advection and dilution (mass effects) in streams, and via inoculation and subsequent growth in lakes. The spatial pattern of bacterioplankton community composition was strongly influenced by interactions among soil water, stream, and lake environments. Our results reveal large differences in lake-specific and stream-specific bacterial community composition over restricted spatial scales (<10 km) and suggest that geographic distance and connectivity influence the distribution of bacterioplankton communities across a landscape.en
dc.description.sponsorshipThis research was supported in part by the University of Michigan and University of Maryland, and by National Science Foundation grants OPP-0408371, OPP-9911681, OPP- 9911278, DEB-0423385, DEB-9810222, and ATM-0423385.en
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherEcological Society of Americaen
dc.relation.urihttp://dx.doi.org/10.1890/06-0387
dc.subjectArcticen
dc.subjectBacteriaen
dc.subjectBacterial productionen
dc.subjectBacterioplanktonen
dc.subjectBiogeographyen
dc.subjectDiversityen
dc.subjectDenaturing gradient gel electrophoresisen
dc.subjectDGGEen
dc.subjectMetacommunityen
dc.titleBiogeography of bacterioplankton in lakes and streams of an arctic tundra catchmenten
dc.typeArticleen
dc.identifier.doi10.1890/06-0387


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