Range-constrained co-occurrence simulation reveals little niche partitioning among rock-dwelling Montenegrina land snails (Gastropoda: Clausiliidae)

Zoltán Fehér, Katharina Mason, M. Szekeres, Elisabeth Haring, Sonja Bamberger, Barna Páll-Gergely, Péter Sólymos

Research output: Article

3 Citations (Scopus)

Abstract

Aim: Taxon co-occurrence analysis is commonly used in ecology, but it has not been applied to range-wide distribution data of partly allopatric taxa because existing methods cannot differentiate between distribution-related effects and taxon interactions. Our first aim was to develop a taxon co-occurrence analysis method that is also capable of taking into account the effect of species ranges and can handle faunistic records from museum databases or biodiversity inventories. Our second aim was to test the independence of taxon co-occurrences of rock-dwelling gastropods at different taxonomic levels, with a special focus on the Clausiliidae subfamily Alopiinae, and in particular the genus Montenegrina. Location: Balkan Peninsula in south-eastern Europe (46N-36N, 13.5E-28E). Methods: We introduced a taxon-specific metric that characterizes the occurrence probability at a given location. This probability was calculated as a distance-weighted mean of the taxon's presence and absence records at all sites. We applied corrections to account for the biases introduced by varying sampling intensity in our dataset. Then we used probabilistic null-models to simulate taxon distributions under the null hypothesis of no taxon interactions and calculated pairwise and cumulated co-occurrences. Independence of taxon occurrences was tested by comparing observed co-occurrences to simulated values. Results: We observed significantly fewer co-occurrences among species and intra-generic lineages of Montenegrina than expected under the assumption of no taxon interaction. Main conclusions: Fewer than expected co-occurrences among species and intra-generic clades indicate that species divergence preceded niche partitioning. This suggests a primary role of non-adaptive processes in the speciation of rock-dwelling gastropods. The method can account for the effects of distributional constraints in range-wide datasets, making it suitable for testing ecological, biogeographical, or evolutionary hypotheses where interactions of partly allopatric taxa are in question.

Original languageEnglish
JournalJournal of Biogeography
DOIs
Publication statusAccepted/In press - jan. 1 2018

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niche partitioning
snail
snails
Gastropoda
niches
rocks
species occurrence
rock
gastropod
simulation
faunistics
Balkans
Eastern European region
methodology
museum
divergence
testing
biodiversity
ecology
land

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology

Cite this

Range-constrained co-occurrence simulation reveals little niche partitioning among rock-dwelling Montenegrina land snails (Gastropoda : Clausiliidae). / Fehér, Zoltán; Mason, Katharina; Szekeres, M.; Haring, Elisabeth; Bamberger, Sonja; Páll-Gergely, Barna; Sólymos, Péter.

In: Journal of Biogeography, 01.01.2018.

Research output: Article

Fehér, Zoltán ; Mason, Katharina ; Szekeres, M. ; Haring, Elisabeth ; Bamberger, Sonja ; Páll-Gergely, Barna ; Sólymos, Péter. / Range-constrained co-occurrence simulation reveals little niche partitioning among rock-dwelling Montenegrina land snails (Gastropoda : Clausiliidae). In: Journal of Biogeography. 2018.
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abstract = "Aim: Taxon co-occurrence analysis is commonly used in ecology, but it has not been applied to range-wide distribution data of partly allopatric taxa because existing methods cannot differentiate between distribution-related effects and taxon interactions. Our first aim was to develop a taxon co-occurrence analysis method that is also capable of taking into account the effect of species ranges and can handle faunistic records from museum databases or biodiversity inventories. Our second aim was to test the independence of taxon co-occurrences of rock-dwelling gastropods at different taxonomic levels, with a special focus on the Clausiliidae subfamily Alopiinae, and in particular the genus Montenegrina. Location: Balkan Peninsula in south-eastern Europe (46N-36N, 13.5E-28E). Methods: We introduced a taxon-specific metric that characterizes the occurrence probability at a given location. This probability was calculated as a distance-weighted mean of the taxon's presence and absence records at all sites. We applied corrections to account for the biases introduced by varying sampling intensity in our dataset. Then we used probabilistic null-models to simulate taxon distributions under the null hypothesis of no taxon interactions and calculated pairwise and cumulated co-occurrences. Independence of taxon occurrences was tested by comparing observed co-occurrences to simulated values. Results: We observed significantly fewer co-occurrences among species and intra-generic lineages of Montenegrina than expected under the assumption of no taxon interaction. Main conclusions: Fewer than expected co-occurrences among species and intra-generic clades indicate that species divergence preceded niche partitioning. This suggests a primary role of non-adaptive processes in the speciation of rock-dwelling gastropods. The method can account for the effects of distributional constraints in range-wide datasets, making it suitable for testing ecological, biogeographical, or evolutionary hypotheses where interactions of partly allopatric taxa are in question.",
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AU - Fehér, Zoltán

AU - Mason, Katharina

AU - Szekeres, M.

AU - Haring, Elisabeth

AU - Bamberger, Sonja

AU - Páll-Gergely, Barna

AU - Sólymos, Péter

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AB - Aim: Taxon co-occurrence analysis is commonly used in ecology, but it has not been applied to range-wide distribution data of partly allopatric taxa because existing methods cannot differentiate between distribution-related effects and taxon interactions. Our first aim was to develop a taxon co-occurrence analysis method that is also capable of taking into account the effect of species ranges and can handle faunistic records from museum databases or biodiversity inventories. Our second aim was to test the independence of taxon co-occurrences of rock-dwelling gastropods at different taxonomic levels, with a special focus on the Clausiliidae subfamily Alopiinae, and in particular the genus Montenegrina. Location: Balkan Peninsula in south-eastern Europe (46N-36N, 13.5E-28E). Methods: We introduced a taxon-specific metric that characterizes the occurrence probability at a given location. This probability was calculated as a distance-weighted mean of the taxon's presence and absence records at all sites. We applied corrections to account for the biases introduced by varying sampling intensity in our dataset. Then we used probabilistic null-models to simulate taxon distributions under the null hypothesis of no taxon interactions and calculated pairwise and cumulated co-occurrences. Independence of taxon occurrences was tested by comparing observed co-occurrences to simulated values. Results: We observed significantly fewer co-occurrences among species and intra-generic lineages of Montenegrina than expected under the assumption of no taxon interaction. Main conclusions: Fewer than expected co-occurrences among species and intra-generic clades indicate that species divergence preceded niche partitioning. This suggests a primary role of non-adaptive processes in the speciation of rock-dwelling gastropods. The method can account for the effects of distributional constraints in range-wide datasets, making it suitable for testing ecological, biogeographical, or evolutionary hypotheses where interactions of partly allopatric taxa are in question.

KW - Allopatric distribution

KW - Coexistence

KW - Competitive exclusion

KW - Distribution modelling

KW - Geographic range overlap

KW - Non-adaptive speciation

KW - Probabilistic null model

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