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Diatom Cooccurrence Shows Less Segregation than Predicted from Niche Modeling
- Source :
- PLoS ONE, PLoS ONE, Vol 11, Iss 4, p e0154581 (2016), Plos One 4 (11), 18 p.. (2016)
- Publication Year :
- 2016
- Publisher :
- Public Library of Science (PLoS), 2016.
-
Abstract
- Species cooccurrence patterns give significant insights into the processes shaping communities. While biotic interactions have been widely studied using cooccurrence analyses in animals and larger plants, studies about cooccurrences among micro-organisms are still relatively rare. We examined stream diatom cooccurrences in France through a national database of samples. In order to test the relative influence of environmental, biotic and spatial constraints on species' incidence distribution, cooccurrence and nestedness patterns of real communities were compared with the patterns generated from a set of standard and environmentally constrained null models. Real communities showed a higher level of segregation than the most conservative standard null models, but a general aggregation of cooccurrences when compared to environmentally constrained null models. We did not find any evidence of limiting similarity between cooccurring species. Aggregations of species cooccurrences were associated with the high levels of nestedness. Altogether, these results suggested that biotic interactions were not structuring cooccurrences of diatom species at our study scale. Instead, the patterns were more likely to be related with colonization patterns, mass effect, and local temporal dynamics of diatom biofilms. We further highlight that the association of standard and environmentally constrained null models may give realistic insight into the cooccurrence patterns of microbial communities.
- Subjects :
- 0106 biological sciences
Decision Analysis
lcsh:Medicine
Marine and Aquatic Sciences
diatomée
01 natural sciences
Theoretical Ecology
lcsh:Science
communauté microbienne
Multidisciplinary
Ecology
biology
concurrence
Microbiota
distribution spatiale
Plants
Plankton
Community Ecology
Engineering and Technology
Nestedness
Ecological Niches
France
Management Engineering
Research Article
Freshwater Environments
1171 Geosciences
Algae
education
Theoretical ecology
Research and Analysis Methods
Microbiology
Models, Biological
010603 evolutionary biology
indice biotique
Rivers
Species Specificity
Limiting similarity
Animals
Ecosystem
Diatoms
Ecological niche
Community
010604 marine biology & hydrobiology
lcsh:R
Ecology and Environmental Sciences
Decision Trees
fungi
Organisms
Biology and Life Sciences
Aquatic Environments
Bodies of Water
15. Life on land
biology.organism_classification
Invertebrates
Environmental niche modelling
Species Interactions
Diatom
Biofilms
Phytoplankton
Earth Sciences
lcsh:Q
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- PLOS ONE
- Accession number :
- edsair.doi.dedup.....6d629622906b6d75532eaf46f2ea03bb