Biogeography of bacterioplankton in lakes and streams of an arctic tundra catchment


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dc.contributor.author Crump, Byron C.
dc.contributor.author Adams, Heather E.
dc.contributor.author Hobbie, John E.
dc.contributor.author Kling, George W.
dc.date.accessioned 2007-08-13T15:14:45Z
dc.date.available 2007-08-13T15:14:45Z
dc.date.issued 2007-06
dc.identifier.citation Ecology 88 (2007): 1365-1378 en
dc.identifier.uri http://hdl.handle.net/1912/1766
dc.description Author 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:10.1890/06-0387 en
dc.description.abstract Bacterioplankton 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.sponsorship This 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.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Ecological Society of America en
dc.relation.uri http://dx.doi.org/10.1890/06-0387
dc.subject Arctic en
dc.subject Bacteria en
dc.subject Bacterial production en
dc.subject Bacterioplankton en
dc.subject Biogeography en
dc.subject Diversity en
dc.subject Denaturing gradient gel electrophoresis en
dc.subject DGGE en
dc.subject Metacommunity en
dc.title Biogeography of bacterioplankton in lakes and streams of an arctic tundra catchment en
dc.type Article en
dc.identifier.doi 10.1890/06-0387

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