Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 495812
Title Environmental rather than spatial factors structure bacterioplankton communities in shallow lakes along a >6000km latitudinal gradient in South America
Author(s) Souffreau, Caroline; Gucht, Katleen Van der; Gremberghe, Ineke van; Kosten, Sarian; Lacerot, Gissell; Lobão, Lúcia Meirelles; Moraes Huszar, Vera Lúcia de; Roland, Fabio; Jeppesen, Erik; Vyverman, Wim; Meester, Luc De
Source Environmental Microbiology 17 (2015)7. - ISSN 1462-2912 - p. 2336 - 2351.
Department(s) Aquatic Ecology and Water Quality Management
Publication type Refereed Article in a scientific journal
Publication year 2015

Metacommunity studies on lake bacterioplankton indicate the importance of environmental factors in structuring communities. Yet most of these studies cover relatively small spatial scales. We assessed the relative importance of environmental and spatial factors in shaping bacterioplankton communities across a >6000km latitudinal range, studying 48 shallow lowland lakes in the tropical, tropicali (isothermal subzone of the tropics) and tundra climate regions of South America using denaturing gradient gel electrophoresis. Bacterioplankton community composition (BCC) differed significantly across regions. Although a large fraction of the variation in BCC remained unexplained, the results supported a consistent significant contribution of local environmental variables and to a lesser extent spatial variables, irrespective of spatial scale. Upon correction for space, mainly biotic environmental factors significantly explained the variation in BCC. The abundance of pelagic cladocerans remained particularly significant, suggesting grazer effects on bacterioplankton communities in the studied lakes. These results confirm that bacterioplankton communities are predominantly structured by environmental factors, even over a large-scale latitudinal gradient (6026km), and stress the importance of including biotic variables in studies that aim to understand patterns in BCC.

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