Biogeography of bacterioplankton in lakes and streams of an arctic tundra catchment
Crump, Byron C.
Adams, Heather E.
Hobbie, John E.
Kling, George W.
MetadataShow full item record
KeywordArctic; Bacteria; Bacterial production; Bacterioplankton; Biogeography; Diversity; Denaturing gradient gel electrophoresis; DGGE; Metacommunity
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.
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
Showing items related by title, author, creator and subject.
Microbial biogeography along an estuarine salinity gradient : combined influences of bacterial growth and residence time Crump, Byron C.; Hopkinson, Charles S.; Sogin, Mitchell L.; Hobbie, John E. (American Society for Microbiology, 2004-03)Shifts in bacterioplankton community composition along the salinity gradient of the Parker River estuary and Plum Island Sound, in northeastern Massachusetts, were related to residence time and bacterial community doubling ...
Bacterioplankton community shifts in an Arctic lake correlate with seasonal changes in organic matter source Crump, Byron C.; Kling, George W.; Bahr, Michele; Hobbie, John E. (American Society for Microbiology, 2003-04)Seasonal shifts in bacterioplankton community composition in Toolik Lake, a tundra lake on the North Slope of Alaska, were related to shifts in the source (terrestrial versus phytoplankton) and lability of dissolved organic ...
Removal of organic carbon by natural bacterioplankton communities as a function of pCO2 from laboratory experiments between 2012 and 2016 Passow, Uta; Brzezinski, Mark A.; Carlson, Craig A.; James, Anna K; Parsons, Rachel J; Trapani, Jennifer N (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: email@example.com, 2016-11-18)Factors that affect the removal of organic carbon by heterotrophic bacterioplankton can impact the rate and magnitude of organic carbon loss in the ocean through the conversion of a portion of consumed organic carbon to ...