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Diatom beta-diversity in streams increases with spatial scale and decreases with nutrient enrichment across regional to sub-continental scales

(2019) JOURNAL OF BIOGEOGRAPHY. 46(4). p.734-744
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Abstract
Aim To quantify the relative contributions of local community assembly processes versus gamma-diversity to beta-diversity, and to assess how spatial scale and anthropogenic disturbance (i.e. nutrient enrichment) interact to dictate which driver dominates. Location France and the United States. Time period 1993-2011. Major taxa studied Freshwater stream diatoms. Methods beta-diversity along a nutrient enrichment gradient was examined across multiple spatial scales. beta-diversity was estimated using multi-site Sorensen dissimilarity. We assessed the relative importance of specialists versus generalists using Friedley coefficient, and the contribution of local community assembly versus gamma-diversity to beta-diversity across spatial scales, with a null model. Finally, we estimated the response of beta-diversity to environmental and spatial factors by testing the correlations between community, environmental and geographical distance matrices with partial Mantel tests. Results beta-diversity generally increased with spatial scale but the rate of increase depended on nutrient enrichment level. beta-diversity decreased significantly with increasing nutrient enrichment level due to the loss of specialist species. Local assembly was an important driver of beta-diversity especially under low nutrient enrichment. Significant partial Mantel correlations were observed between diatom beta-diversity and pure environmental distances under these conditions, highlighting the role of species sorting in local assembly processes. Conversely, in heavily enriched sites, only spatial distances were significantly correlated with beta-diversity, which indicated a substantial role of dispersal processes. Main conclusions Nutrient concentration mediated the expected increase in beta-diversity with spatial scales. Across spatial scales, beta-diversity was more influenced by local assembly processes rather than by gamma-diversity. Nutrient enrichment was associated with an overall decline in diatom beta-diversity and a shift in assembly processes from species sorting to dispersal, notably due to the elimination of some specialists and their subsequent replacement by generalists.
Keywords
COOCCURRENCE BASED ASSESSMENT, BIOTIC HOMOGENIZATION, PATTERNS, COMMUNITIES, DRIVERS, NICHE, BIODIVERSITY, MECHANISMS, COMPONENTS, TURNOVER, beta-diversity, gamma-diversity, community assembly, diatom communities, dispersal processes, landscape windows approach, multi-scale, null, model, species sorting

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MLA
Leboucher, Thibault, et al. “Diatom Beta-Diversity in Streams Increases with Spatial Scale and Decreases with Nutrient Enrichment across Regional to Sub-Continental Scales.” JOURNAL OF BIOGEOGRAPHY, vol. 46, no. 4, Wiley, 2019, pp. 734–44, doi:10.1111/jbi.13517.
APA
Leboucher, T., Budnick, W. R., Passy, Sophia, I., Boutry, S., Jannoneau, A., Soininen, J., … Tison-Rosebery, J. (2019). Diatom beta-diversity in streams increases with spatial scale and decreases with nutrient enrichment across regional to sub-continental scales. JOURNAL OF BIOGEOGRAPHY, 46(4), 734–744. https://doi.org/10.1111/jbi.13517
Chicago author-date
Leboucher, Thibault, William R. Budnick, I Passy, Sophia, Sebastien Boutry, Aurelien Jannoneau, Janne Soininen, Wim Vyverman, and Juliette Tison-Rosebery. 2019. “Diatom Beta-Diversity in Streams Increases with Spatial Scale and Decreases with Nutrient Enrichment across Regional to Sub-Continental Scales.” JOURNAL OF BIOGEOGRAPHY 46 (4): 734–44. https://doi.org/10.1111/jbi.13517.
Chicago author-date (all authors)
Leboucher, Thibault, William R. Budnick, I Passy, Sophia, Sebastien Boutry, Aurelien Jannoneau, Janne Soininen, Wim Vyverman, and Juliette Tison-Rosebery. 2019. “Diatom Beta-Diversity in Streams Increases with Spatial Scale and Decreases with Nutrient Enrichment across Regional to Sub-Continental Scales.” JOURNAL OF BIOGEOGRAPHY 46 (4): 734–744. doi:10.1111/jbi.13517.
Vancouver
1.
Leboucher T, Budnick WR, Passy, Sophia I, Boutry S, Jannoneau A, Soininen J, et al. Diatom beta-diversity in streams increases with spatial scale and decreases with nutrient enrichment across regional to sub-continental scales. JOURNAL OF BIOGEOGRAPHY. 2019;46(4):734–44.
IEEE
[1]
T. Leboucher et al., “Diatom beta-diversity in streams increases with spatial scale and decreases with nutrient enrichment across regional to sub-continental scales,” JOURNAL OF BIOGEOGRAPHY, vol. 46, no. 4, pp. 734–744, 2019.
@article{8640930,
  abstract     = {{Aim To quantify the relative contributions of local community assembly processes versus gamma-diversity to beta-diversity, and to assess how spatial scale and anthropogenic disturbance (i.e. nutrient enrichment) interact to dictate which driver dominates. Location France and the United States. Time period 1993-2011. Major taxa studied Freshwater stream diatoms. Methods beta-diversity along a nutrient enrichment gradient was examined across multiple spatial scales. beta-diversity was estimated using multi-site Sorensen dissimilarity. We assessed the relative importance of specialists versus generalists using Friedley coefficient, and the contribution of local community assembly versus gamma-diversity to beta-diversity across spatial scales, with a null model. Finally, we estimated the response of beta-diversity to environmental and spatial factors by testing the correlations between community, environmental and geographical distance matrices with partial Mantel tests. Results beta-diversity generally increased with spatial scale but the rate of increase depended on nutrient enrichment level. beta-diversity decreased significantly with increasing nutrient enrichment level due to the loss of specialist species. Local assembly was an important driver of beta-diversity especially under low nutrient enrichment. Significant partial Mantel correlations were observed between diatom beta-diversity and pure environmental distances under these conditions, highlighting the role of species sorting in local assembly processes. Conversely, in heavily enriched sites, only spatial distances were significantly correlated with beta-diversity, which indicated a substantial role of dispersal processes. Main conclusions Nutrient concentration mediated the expected increase in beta-diversity with spatial scales. Across spatial scales, beta-diversity was more influenced by local assembly processes rather than by gamma-diversity. Nutrient enrichment was associated with an overall decline in diatom beta-diversity and a shift in assembly processes from species sorting to dispersal, notably due to the elimination of some specialists and their subsequent replacement by generalists.}},
  author       = {{Leboucher, Thibault and Budnick, William R. and Passy, Sophia, I and Boutry, Sebastien and Jannoneau, Aurelien and Soininen, Janne and Vyverman, Wim and Tison-Rosebery, Juliette}},
  issn         = {{0305-0270}},
  journal      = {{JOURNAL OF BIOGEOGRAPHY}},
  keywords     = {{COOCCURRENCE BASED ASSESSMENT,BIOTIC HOMOGENIZATION,PATTERNS,COMMUNITIES,DRIVERS,NICHE,BIODIVERSITY,MECHANISMS,COMPONENTS,TURNOVER,beta-diversity,gamma-diversity,community assembly,diatom communities,dispersal processes,landscape windows approach,multi-scale,null,model,species sorting}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{734--744}},
  publisher    = {{Wiley}},
  title        = {{Diatom beta-diversity in streams increases with spatial scale and decreases with nutrient enrichment across regional to sub-continental scales}},
  url          = {{http://doi.org/10.1111/jbi.13517}},
  volume       = {{46}},
  year         = {{2019}},
}

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