2014
DOI: 10.1002/ece3.1084
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Abstract: Understanding and disentangling different processes underlying the assembly and diversity of communities remains a key challenge in ecology. Species can assemble into communities either randomly or due to deterministic processes. Deterministic assembly leads to species being more similar (underdispersed) or more different (overdispersed) in certain traits than would be expected by chance. However, the relative importance of those processes is not well understood for many organisms, including terrestrial invert… Show more

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Cited by 33 publications
(36 citation statements)
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References 70 publications
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“…We expected alpha traits (i.e., those linked to resource use) to be overdispersed, because they are linked to the coexistence of species within the assemblage, whereas beta traits (i.e., those linked to environmental requirements) were expected to be underdispersed, because these traits are likely to be filtered by the environment (Ackerly & Cornwell, ; Lopez et al, ). Our results did not corroborate this hypothesis for all the traits, contrary to what was found in snails at a local scale (Astor et al, ), highlighting a potential effect of the spatial scale at which studies are conducted. Astor et al () found strong underdispersion in traits driven by environmental filtering, whereas they did not show evidence of overdispersion for traits linked to diet or body size, which is in agreement with what is currently expected (Lopez et al, ).…”
Section: Discussioncontrasting
confidence: 99%
See 1 more Smart Citation
“…We expected alpha traits (i.e., those linked to resource use) to be overdispersed, because they are linked to the coexistence of species within the assemblage, whereas beta traits (i.e., those linked to environmental requirements) were expected to be underdispersed, because these traits are likely to be filtered by the environment (Ackerly & Cornwell, ; Lopez et al, ). Our results did not corroborate this hypothesis for all the traits, contrary to what was found in snails at a local scale (Astor et al, ), highlighting a potential effect of the spatial scale at which studies are conducted. Astor et al () found strong underdispersion in traits driven by environmental filtering, whereas they did not show evidence of overdispersion for traits linked to diet or body size, which is in agreement with what is currently expected (Lopez et al, ).…”
Section: Discussioncontrasting
confidence: 99%
“…Our results did not corroborate this hypothesis for all the traits, contrary to what was found in snails at a local scale (Astor et al, ), highlighting a potential effect of the spatial scale at which studies are conducted. Astor et al () found strong underdispersion in traits driven by environmental filtering, whereas they did not show evidence of overdispersion for traits linked to diet or body size, which is in agreement with what is currently expected (Lopez et al, ). In our study, overdispersion was mainly observed for the fecundity trait in almost every river catchment across Europe, whereas underdispersion was mainly noticed for egg diameter, trophic position and swimming factor, traits from both alpha and beta niches.…”
Section: Discussioncontrasting
confidence: 99%
“…; Astor et al . ; Woodcock et al . ), as well as the effect of community composition on ecosystem processes and the provision of ecosystem services across ecological scales (Naeem & Wright ; Messier, McGill & Lechowicz ; Luck et al .…”
Section: Introductionmentioning
confidence: 99%
“…y, year (Townsend & Hildrew, 1994). Species with oblong or globose shells have to cope with higher torque (Heller, 1987), but can more effectively crawl up vertical vegetation or dig in the ground enduring flooding (and drought) in situ (Astor et al, 2014;Heller, 1987;Kappes & Sulikowska-Drozd, 2016;Pozna nska et al, 2015) Shell size:…”
Section: Spatiotemporal Trajectoriesmentioning
confidence: 99%
“…Flood resistance and/or resilience Small shell sizes are linked to high passive dispersal capability allowing especially relative immobile species to (re-)colonise habitats effectively (Astor et al, 2014;Hausdorf, 2000;Ilg et al, 2012). Larger shells are more vulnerable to water current (Reckendorfer et al, 2006), getting caught more easily in branches and tree debris, and generally linked to less disturbed habitats (Townsend & Hildrew, 1994;Usseglio-Polatera et al, 2000) Shell character:…”
Section: Spatiotemporal Trajectoriesmentioning
confidence: 99%