Decomposing the causes for niche differentiation between species using hypervolumes

Show full item record



Permalink

http://hdl.handle.net/10138/318125

Citation

Carvalho , J C & Cardoso , P 2020 , ' Decomposing the causes for niche differentiation between species using hypervolumes ' , Frontiers in Ecology and Evolution , vol. 8 , 243 . https://doi.org/10.3389/fevo.2020.00243

Title: Decomposing the causes for niche differentiation between species using hypervolumes
Author: Carvalho, Jose C.; Cardoso, Pedro
Contributor: University of Helsinki, Zoology
Date: 2020-07-30
Language: eng
Number of pages: 7
Belongs to series: Frontiers in Ecology and Evolution
ISSN: 2296-701X
URI: http://hdl.handle.net/10138/318125
Abstract: Hutchinson's n-dimensional hypervolume concept holds a central role across different fields of ecology and evolution. The question of the amount of hypervolume overlap and differentiation between species is of great interest to understand the processes that drive niche dynamics, competitive interactions and, ultimately, community assembly. A framework is proposed to decompose overall differentiation among hypervolumes into two distinct components: niche shifts and niche contraction/expansion processes. Niche shift corresponds to the replacement of space between the hypervolumes occupied by two species, whereas niche contraction/expansion processes correspond to net differences between the amount of space enclosed by each hypervolume. A procedure to implement non-continuous trait data in the estimation ofn-dimensional hypervolumes is proposed. Hypervolumes were constructed for three Darwin' finches,Geospiza conirostris,Geospiza magnirostris, andGeospiza difficilisusing intraspecific trait data. Results showed that significant niche shifts, not niche contraction, occurred betweenG. conirostrisandG. magnirostrisin Genovesa island, where they live in sympatry. This means thatG. conirostrisoccupied a different niche space and not a reduced space on Genovesa.G. difficiliswas well differentiated from the other two species. The proposed framework allows disentangling different processes underlying niche partitioning between coexisting species. This framework offers novel insights to understand the drivers of niche partitioning strategies among coexisting species.
Subject: COMMUNITY
COMPONENT ANALYSIS
ECOLOGY
EXPANSION
FUNCTIONAL DIVERSITY
GENERAL COEFFICIENT
LIZARDS
SHIFTS
SIMILARITY
fundamental niche
hypervolume
morphospace
niche contraction
niche shift
realized niche
1181 Ecology, evolutionary biology
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
fevo_08_00243.pdf 761.2Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record