Co-occurrence of earthworms in Lamto savanna: A null model analysis of community structure

Ehouman, N’guetta Moïse; Tiho, Seydou; Dagnogo, Mamadou

doi:10.1016/j.ejsobi.2012.08.007

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…For example, Sanders et al (2007) found that ant species co-occurrence patterns did not differ from randomness. Ehouman et al (2012) revealed that the distribution of earthworm species was random in forest and wooded savanna. Overall, the co-occurrence patterns were distinctly different in August and October for above-ground communities.…”

Section: Discussionmentioning

confidence: 99%

Co-occurrence patterns of above-ground and below-ground mite communities in farmland of Sanjiang Plain, Northeast China

et al. 2014

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One of the fundamental questions in community ecology is whether communities are random or formed by deterministic mechanisms. Although many efforts have been made to verify non-randomness in community structure, little is known with regard to co-occurrence patterns in above-ground and below-ground communities. In this paper, we used a null model to test non-randomness in the structure of the above-ground and below-ground mite communities in farmland of the Sanjiang Plain, Northeast China. Then, we used four tests for non-randomness to recognize species pairs that would be demonstrated as significantly aggregated or segregated co-occurrences of the above-ground and below-ground mite communities. The co-occurrence pattern of the above-ground mite community was significantly non-random in October, suggesting species segregation and hence interspecific competition. Additionally, species co-occurrence patterns did not differ from randomness in the above-ground mite community in August or in below-ground mite communities in August and October. Only one significant species pair was detected in the above-ground mite community in August, while no significant species pairs were recognized in the above-ground mite community in October or in the below-ground mite communities in August and October. The results indicate that non-randomness and significant species pairs may not be the general rule in the above-ground and below-ground mite communities in farmland of the Sanjiang Plain at the fine scale.

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Section: Discussionmentioning

confidence: 99%

Co-occurrence patterns of above-ground and below-ground mite communities in farmland of Sanjiang Plain, Northeast China

et al. 2014

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“…a Checkerboard score ("C-score"), which is a quantitative index of occurrence that measures the extent to which species co-occur less frequently than expected by chance (Gotelli, 2000). A community is structured by competition when the C-score is significantly larger than expected by chance (Gotelli, 2000;Tondoh, 2006;Gotelli & Entsminger, 2007;Tiho & Josens, 2007;Ehouman et al, 2009). Thirdly we compared co-occurrence patterns with null expectations via simulation.…”

Section: Introductionmentioning

confidence: 99%

Null models for study Rotifers and Crustaceans Zooplankton species richness in Chilean Patagonian lakes

Escalante

2016

Acta Limnol. Bras.

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Aims The Patagonian lakes are characterized by their oligotrophy that is the cause of low species number in their zooplankton assemblage. The aim of the present study is to analyze the crustacean and rotifers species number pattern in Patagonian lakes among a latitudinal gradient (40-51 °S). Results The results revealed that there are direct significant correlations between total species with rotifer species, and chlorophyll concentration with crustacean species number, and an inverse association between latitude with total species. Conclusion The results of co-occurrence species null model revealed presence of regulator factors in one of three simulations, that would be due to the presence of many species repeated in studied sites. Similar patterns were observed in Argentinean Patagonian lakes.

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Spatial patterns and species associations of earthworms in relation to micro-topography and insolation

Hackenberger

Kutuzović

2023

Applied Soil Ecology

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Co-occurrence of earthworms in Lamto savanna: A null model analysis of community structure

Cited by 5 publications

References 21 publications

Co-occurrence patterns of above-ground and below-ground mite communities in farmland of Sanjiang Plain, Northeast China

Co-occurrence patterns of above-ground and below-ground mite communities in farmland of Sanjiang Plain, Northeast China

Null models for study Rotifers and Crustaceans Zooplankton species richness in Chilean Patagonian lakes

Spatial patterns and species associations of earthworms in relation to micro-topography and insolation

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