Ecological network assembly : how the regional metaweb influences local food webs
Local food webs result from a sequence of colonisations and extinctions by species from the regional pool or metaweb, that is, the assembly process. Assembly is theorised to be a selective process: whether or not certain species or network structures can persist is partly determined by local process...
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ftunivgent:oai:archive.ugent.be:8750913 2023-06-11T04:06:21+02:00 Ecological network assembly : how the regional metaweb influences local food webs Saravia, Leonardo A. Marina, Tomás I. Kristensen, Nadiah P. De Troch, Marleen Momo, Fernando R. 2022 application/pdf https://biblio.ugent.be/publication/8750913 http://hdl.handle.net/1854/LU-8750913 https://doi.org/10.1111/1365-2656.13652 https://biblio.ugent.be/publication/8750913/file/8751168 eng eng https://biblio.ugent.be/publication/8750913 http://hdl.handle.net/1854/LU-8750913 http://dx.doi.org/10.1111/1365-2656.13652 https://biblio.ugent.be/publication/8750913/file/8751168 No license (in copyright) info:eu-repo/semantics/restrictedAccess JOURNAL OF ANIMAL ECOLOGY ISSN: 0021-8790 ISSN: 1365-2656 Earth and Environmental Sciences Animal Science and Zoology Ecology Evolution Behavior and Systematics ecological network assembly food web structure Metaweb modularity motif network assembly model null models topological roles LARGE COMPLEX SYSTEM POPULATION STABILITY BODY-SIZE SELECTION MOTIFS ROLES COMPARTMENTALIZATION COLONIZATION RETHINKING journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftunivgent https://doi.org/10.1111/1365-2656.13652 2023-05-10T22:55:15Z Local food webs result from a sequence of colonisations and extinctions by species from the regional pool or metaweb, that is, the assembly process. Assembly is theorised to be a selective process: whether or not certain species or network structures can persist is partly determined by local processes including habitat filtering and dynamical constraints. Consequently, local food web structure should reflect these processes. The goal of this study was to test evidence for these selective processes by comparing the structural properties of real food webs to the expected distribution given the metaweb. We were particularly interested in ecological dynamics; if the network properties commonly associated with dynamical stability are indeed the result of stability constraints, then they should deviate from expectation in the direction predicted by theory. To create a null expectation, we used the novel approach of randomly assembling model webs by drawing species and interactions from the empirical metaweb. The assembly model permitted colonisation and extinction, and required a consumer species to have at least one prey, but had no habitat type nor population dynamical constraints. Three datasets were used: (a) the marine Antarctic metaweb, with two local food webs; (b) the 50 lakes of the Adirondacks; and (c) the arthropod community from Florida Keys' classic defaunation experiment. Contrary to our expectations, we found that there were almost no differences between empirical webs and those resulting from the null assembly model. Few empirical food webs showed significant differences with network properties, motif representations and topological roles. Network properties associated with stability did not deviate from expectation in the direction predicted by theory. Our results suggest that-for the commonly used metrics we considered-local food web structure is not strongly influenced by dynamical nor habitat restrictions. Instead, the structure is inherited from the metaweb. This suggests that the network ... Article in Journal/Newspaper Antarc* Antarctic Ghent University Academic Bibliography Antarctic Journal of Animal Ecology 91 3 630 642 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences Animal Science and Zoology Ecology Evolution Behavior and Systematics ecological network assembly food web structure Metaweb modularity motif network assembly model null models topological roles LARGE COMPLEX SYSTEM POPULATION STABILITY BODY-SIZE SELECTION MOTIFS ROLES COMPARTMENTALIZATION COLONIZATION RETHINKING |
spellingShingle |
Earth and Environmental Sciences Animal Science and Zoology Ecology Evolution Behavior and Systematics ecological network assembly food web structure Metaweb modularity motif network assembly model null models topological roles LARGE COMPLEX SYSTEM POPULATION STABILITY BODY-SIZE SELECTION MOTIFS ROLES COMPARTMENTALIZATION COLONIZATION RETHINKING Saravia, Leonardo A. Marina, Tomás I. Kristensen, Nadiah P. De Troch, Marleen Momo, Fernando R. Ecological network assembly : how the regional metaweb influences local food webs |
topic_facet |
Earth and Environmental Sciences Animal Science and Zoology Ecology Evolution Behavior and Systematics ecological network assembly food web structure Metaweb modularity motif network assembly model null models topological roles LARGE COMPLEX SYSTEM POPULATION STABILITY BODY-SIZE SELECTION MOTIFS ROLES COMPARTMENTALIZATION COLONIZATION RETHINKING |
description |
Local food webs result from a sequence of colonisations and extinctions by species from the regional pool or metaweb, that is, the assembly process. Assembly is theorised to be a selective process: whether or not certain species or network structures can persist is partly determined by local processes including habitat filtering and dynamical constraints. Consequently, local food web structure should reflect these processes. The goal of this study was to test evidence for these selective processes by comparing the structural properties of real food webs to the expected distribution given the metaweb. We were particularly interested in ecological dynamics; if the network properties commonly associated with dynamical stability are indeed the result of stability constraints, then they should deviate from expectation in the direction predicted by theory. To create a null expectation, we used the novel approach of randomly assembling model webs by drawing species and interactions from the empirical metaweb. The assembly model permitted colonisation and extinction, and required a consumer species to have at least one prey, but had no habitat type nor population dynamical constraints. Three datasets were used: (a) the marine Antarctic metaweb, with two local food webs; (b) the 50 lakes of the Adirondacks; and (c) the arthropod community from Florida Keys' classic defaunation experiment. Contrary to our expectations, we found that there were almost no differences between empirical webs and those resulting from the null assembly model. Few empirical food webs showed significant differences with network properties, motif representations and topological roles. Network properties associated with stability did not deviate from expectation in the direction predicted by theory. Our results suggest that-for the commonly used metrics we considered-local food web structure is not strongly influenced by dynamical nor habitat restrictions. Instead, the structure is inherited from the metaweb. This suggests that the network ... |
format |
Article in Journal/Newspaper |
author |
Saravia, Leonardo A. Marina, Tomás I. Kristensen, Nadiah P. De Troch, Marleen Momo, Fernando R. |
author_facet |
Saravia, Leonardo A. Marina, Tomás I. Kristensen, Nadiah P. De Troch, Marleen Momo, Fernando R. |
author_sort |
Saravia, Leonardo A. |
title |
Ecological network assembly : how the regional metaweb influences local food webs |
title_short |
Ecological network assembly : how the regional metaweb influences local food webs |
title_full |
Ecological network assembly : how the regional metaweb influences local food webs |
title_fullStr |
Ecological network assembly : how the regional metaweb influences local food webs |
title_full_unstemmed |
Ecological network assembly : how the regional metaweb influences local food webs |
title_sort |
ecological network assembly : how the regional metaweb influences local food webs |
publishDate |
2022 |
url |
https://biblio.ugent.be/publication/8750913 http://hdl.handle.net/1854/LU-8750913 https://doi.org/10.1111/1365-2656.13652 https://biblio.ugent.be/publication/8750913/file/8751168 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
JOURNAL OF ANIMAL ECOLOGY ISSN: 0021-8790 ISSN: 1365-2656 |
op_relation |
https://biblio.ugent.be/publication/8750913 http://hdl.handle.net/1854/LU-8750913 http://dx.doi.org/10.1111/1365-2656.13652 https://biblio.ugent.be/publication/8750913/file/8751168 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/1365-2656.13652 |
container_title |
Journal of Animal Ecology |
container_volume |
91 |
container_issue |
3 |
container_start_page |
630 |
op_container_end_page |
642 |
_version_ |
1768378248872329216 |