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The importance of dispersal related and local factors in shaping the taxonomic structure of diatom metacommunities

Elie Verleyen UGent, Wim Vyverman UGent, Mieke Sterken UGent, Dominic A Hodgson, Aaike De Wever UGent, Steve Juggins, Bart Van de Vijver, Viviene J Jones, Pieter Vanormelingen UGent and Donna Roberts, et al. (2009) OIKOS. 118(8). p.1239-1249
abstract
To date, little is known about the relative importance of dispersal related versus local factors in shaping microbial metacommunities. A common criticism regarding existing datasets is that the level of taxonomic resolution might be too coarse to reliably assess microbial community structure and study biogeographical patterns. Moreover, few studies have assessed the importance of geographic distance between habitats, which may influence metacommunity dynamics through its effect on dispersal rates. We applied variation partitioning analyses to 15 separate regional datasets on diatoms found in lakes in Eurasia, Africa and Antarctica. These analyses quantified the relative contributions of dispersal related and local factors in determining patterns of taxonomic turnover at the species and at the genus level. In general, results were similar at both taxonomic levels. Local environmental factors accounted for most of the explained variation (median=21%), whereas dispersal related factors were much less important (median of significant fractions=5.5% variation explained) and failed to significantly explain any variation, independent of the environmental variables, in the majority of the datasets. However, the amount of variation explained by dispersal related factors increased with increasing geographic distance and increasing taxonomic resolution. We extrapolated our regional scale observations to the global scale by combining the regional datasets into a global dataset comprising 1039 freshwater lakes from both hemispheres and spanning a geographic distance of over 19 000 km. At this global scale, taxonomic turnover was lowest in highly connected habitats, once environmental factors were partialled out. In common with many other studies of macro-organisms, these analyses showed that both dispersal related and local variables significantly contribute to the structure of global lacustrine diatom communities.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
COMMUNITY COMPOSITION, CLIMATE, CONTINENTAL ANTARCTIC LAKES, SPATIAL PROCESSES, SPECIES RICHNESS, MOUNTAIN LAKES, ECOLOGY, PATTERNS, DIVERSITY, FRESH-WATER
journal title
OIKOS
Oikos
volume
118
issue
8
pages
11 pages
Web of Science type
Article
Web of Science id
000268535300015
JCR category
ECOLOGY
JCR impact factor
3.147 (2009)
JCR rank
34/127 (2009)
JCR quartile
2 (2009)
ISSN
0030-1299
DOI
10.1111/j.1600-0706.2009.17575.x
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
840622
handle
http://hdl.handle.net/1854/LU-840622
date created
2010-01-27 09:03:39
date last changed
2010-02-03 16:34:37
@article{840622,
  abstract     = {To date, little is known about the relative importance of dispersal related versus local factors in shaping microbial metacommunities. A common criticism regarding existing datasets is that the level of taxonomic resolution might be too coarse to reliably assess microbial community structure and study biogeographical patterns. Moreover, few studies have assessed the importance of geographic distance between habitats, which may influence metacommunity dynamics through its effect on dispersal rates. We applied variation partitioning analyses to 15 separate regional datasets on diatoms found in lakes in Eurasia, Africa and Antarctica. These analyses quantified the relative contributions of dispersal related and local factors in determining patterns of taxonomic turnover at the species and at the genus level. In general, results were similar at both taxonomic levels. Local environmental factors accounted for most of the explained variation (median=21\%), whereas dispersal related factors were much less important (median of significant fractions=5.5\% variation explained) and failed to significantly explain any variation, independent of the environmental variables, in the majority of the datasets. However, the amount of variation explained by dispersal related factors increased with increasing geographic distance and increasing taxonomic resolution. We extrapolated our regional scale observations to the global scale by combining the regional datasets into a global dataset comprising 1039 freshwater lakes from both hemispheres and spanning a geographic distance of over 19 000 km. At this global scale, taxonomic turnover was lowest in highly connected habitats, once environmental factors were partialled out. In common with many other studies of macro-organisms, these analyses showed that both dispersal related and local variables significantly contribute to the structure of global lacustrine diatom communities.},
  author       = {Verleyen, Elie and Vyverman, Wim and Sterken, Mieke and Hodgson, Dominic A and De Wever, Aaike and Juggins, Steve and Van de Vijver, Bart and Jones, Viviene J and Vanormelingen, Pieter and Roberts, Donna and Flower, Roger and Kilroy, Cathy and Souffreau, Caroline and Sabbe, Koen},
  issn         = {0030-1299},
  journal      = {OIKOS},
  keyword      = {COMMUNITY COMPOSITION,CLIMATE,CONTINENTAL ANTARCTIC LAKES,SPATIAL PROCESSES,SPECIES RICHNESS,MOUNTAIN LAKES,ECOLOGY,PATTERNS,DIVERSITY,FRESH-WATER},
  language     = {eng},
  number       = {8},
  pages        = {1239--1249},
  title        = {The importance of dispersal related and local factors in shaping the taxonomic structure of diatom metacommunities},
  url          = {http://dx.doi.org/10.1111/j.1600-0706.2009.17575.x},
  volume       = {118},
  year         = {2009},
}

Chicago
Verleyen, Elie, Wim Vyverman, Mieke Sterken, Dominic A Hodgson, Aaike De Wever, Steve Juggins, Bart Van de Vijver, et al. 2009. “The Importance of Dispersal Related and Local Factors in Shaping the Taxonomic Structure of Diatom Metacommunities.” Oikos 118 (8): 1239–1249.
APA
Verleyen, E., Vyverman, W., Sterken, M., Hodgson, D. A., De Wever, A., Juggins, S., Van de Vijver, B., et al. (2009). The importance of dispersal related and local factors in shaping the taxonomic structure of diatom metacommunities. OIKOS, 118(8), 1239–1249.
Vancouver
1.
Verleyen E, Vyverman W, Sterken M, Hodgson DA, De Wever A, Juggins S, et al. The importance of dispersal related and local factors in shaping the taxonomic structure of diatom metacommunities. OIKOS. 2009;118(8):1239–49.
MLA
Verleyen, Elie, Wim Vyverman, Mieke Sterken, et al. “The Importance of Dispersal Related and Local Factors in Shaping the Taxonomic Structure of Diatom Metacommunities.” OIKOS 118.8 (2009): 1239–1249. Print.