Appendices S1-S6 from Density-dependent changes in effective area occupied for sea-bottom-associated marine fishes
The spatial distribution of marine fishes can change for many reasons including density-dependent distributional shifts. Previous studies show mixed support for either the proportional-density model, PDM (no relationship between abundance and area occupied, supported by ideal-free distribution theor...
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ftroysocietyfig:oai:figshare.com:article/3860646 2023-05-15T15:43:59+02:00 Appendices S1-S6 from Density-dependent changes in effective area occupied for sea-bottom-associated marine fishes James T. Thorson Anna Rindorf Jin Gao Dana Hanselman Henning Winker 2016-09-27T14:17:06Z https://doi.org/10.6084/m9.figshare.3860646.v1 https://figshare.com/articles/journal_contribution/Appendices_S1-S6_from_Density-dependent_changes_in_effective_area_occupied_for_sea-bottom-associated_marine_fishes/3860646 unknown doi:10.6084/m9.figshare.3860646.v1 https://figshare.com/articles/journal_contribution/Appendices_S1-S6_from_Density-dependent_changes_in_effective_area_occupied_for_sea-bottom-associated_marine_fishes/3860646 CC BY 4.0 CC-BY Environmental Science Ecology density-dependent habitat selection ideal-free distribution basin model spatio-temporal meta-analysis Text Journal contribution 2016 ftroysocietyfig https://doi.org/10.6084/m9.figshare.3860646.v1 2022-01-01T20:00:30Z The spatial distribution of marine fishes can change for many reasons including density-dependent distributional shifts. Previous studies show mixed support for either the proportional-density model, PDM (no relationship between abundance and area occupied, supported by ideal-free distribution theory) or the basin model, BM (positive abundance–area relationship, supported by density-dependent habitat selection theory). The BM implies that fishes move towards preferred habitat as the population declines. We estimate the average relationship using bottom trawl data for 92 fish species from six marine regions, to determine whether the BM or PDM provides a better description for sea-bottom-associated fishes. We fit a spatio-temporal model and estimate changes in effective area occupied and abundance, and combine results to estimate the average abundance–area relationship as well as variability among taxa and regions. The average relationship is weak but significant (0.6% increase in area for a 10% increase in abundance), whereas only a small proportion of species–region combinations show a negative relationship (i.e. shrinking area when abundance increases). Approximately one-third of combinations (34.6%) are predicted to increase in area more than 1% for every 10% increase in abundance. We therefore infer that population density generally changes faster than effective area occupied during abundance changes. Gadiforms have the strongest estimated relationship (average 1.0% area increase for every 10% abundance increase) followed by Pleuronectiformes and Scorpaeniformes, and the Eastern Bering Sea shows a strong relationship between abundance and area occupied relative to other regions. We conclude that the BM explains a small but important portion of spatial dynamics for sea-bottom-associated fishes, and that many individual populations merit cautious management during population declines, because a compressed range may increase the efficiency of harvest. Other Non-Article Part of Journal/Newspaper Bering Sea The Royal Society: Figshare Bering Sea |
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The Royal Society: Figshare |
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ftroysocietyfig |
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topic |
Environmental Science Ecology density-dependent habitat selection ideal-free distribution basin model spatio-temporal meta-analysis |
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Environmental Science Ecology density-dependent habitat selection ideal-free distribution basin model spatio-temporal meta-analysis James T. Thorson Anna Rindorf Jin Gao Dana Hanselman Henning Winker Appendices S1-S6 from Density-dependent changes in effective area occupied for sea-bottom-associated marine fishes |
topic_facet |
Environmental Science Ecology density-dependent habitat selection ideal-free distribution basin model spatio-temporal meta-analysis |
description |
The spatial distribution of marine fishes can change for many reasons including density-dependent distributional shifts. Previous studies show mixed support for either the proportional-density model, PDM (no relationship between abundance and area occupied, supported by ideal-free distribution theory) or the basin model, BM (positive abundance–area relationship, supported by density-dependent habitat selection theory). The BM implies that fishes move towards preferred habitat as the population declines. We estimate the average relationship using bottom trawl data for 92 fish species from six marine regions, to determine whether the BM or PDM provides a better description for sea-bottom-associated fishes. We fit a spatio-temporal model and estimate changes in effective area occupied and abundance, and combine results to estimate the average abundance–area relationship as well as variability among taxa and regions. The average relationship is weak but significant (0.6% increase in area for a 10% increase in abundance), whereas only a small proportion of species–region combinations show a negative relationship (i.e. shrinking area when abundance increases). Approximately one-third of combinations (34.6%) are predicted to increase in area more than 1% for every 10% increase in abundance. We therefore infer that population density generally changes faster than effective area occupied during abundance changes. Gadiforms have the strongest estimated relationship (average 1.0% area increase for every 10% abundance increase) followed by Pleuronectiformes and Scorpaeniformes, and the Eastern Bering Sea shows a strong relationship between abundance and area occupied relative to other regions. We conclude that the BM explains a small but important portion of spatial dynamics for sea-bottom-associated fishes, and that many individual populations merit cautious management during population declines, because a compressed range may increase the efficiency of harvest. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
James T. Thorson Anna Rindorf Jin Gao Dana Hanselman Henning Winker |
author_facet |
James T. Thorson Anna Rindorf Jin Gao Dana Hanselman Henning Winker |
author_sort |
James T. Thorson |
title |
Appendices S1-S6 from Density-dependent changes in effective area occupied for sea-bottom-associated marine fishes |
title_short |
Appendices S1-S6 from Density-dependent changes in effective area occupied for sea-bottom-associated marine fishes |
title_full |
Appendices S1-S6 from Density-dependent changes in effective area occupied for sea-bottom-associated marine fishes |
title_fullStr |
Appendices S1-S6 from Density-dependent changes in effective area occupied for sea-bottom-associated marine fishes |
title_full_unstemmed |
Appendices S1-S6 from Density-dependent changes in effective area occupied for sea-bottom-associated marine fishes |
title_sort |
appendices s1-s6 from density-dependent changes in effective area occupied for sea-bottom-associated marine fishes |
publishDate |
2016 |
url |
https://doi.org/10.6084/m9.figshare.3860646.v1 https://figshare.com/articles/journal_contribution/Appendices_S1-S6_from_Density-dependent_changes_in_effective_area_occupied_for_sea-bottom-associated_marine_fishes/3860646 |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea |
genre_facet |
Bering Sea |
op_relation |
doi:10.6084/m9.figshare.3860646.v1 https://figshare.com/articles/journal_contribution/Appendices_S1-S6_from_Density-dependent_changes_in_effective_area_occupied_for_sea-bottom-associated_marine_fishes/3860646 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.3860646.v1 |
_version_ |
1766378197651292160 |