Identifying high‐density areas of oysters using species distribution modeling: Lessons for conservation of the native Ostrea edulis and management of the invasive Magallana ( Crassostrea) gigas in Sweden
Abstract Aim Understanding spatial patterns of the distribution of adult native oyster, Ostrea edulis , and the invasive Magallana (Crassostrea) gigas is important for management of these populations. The aim of this study was to use ensemble SDM’s to (a) identify and predict conservation hotspots,...
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Online Access: | http://dx.doi.org/10.1002/ece3.7451 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.7451 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.7451 |
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crwiley:10.1002/ece3.7451 2024-09-15T18:03:13+00:00 Identifying high‐density areas of oysters using species distribution modeling: Lessons for conservation of the native Ostrea edulis and management of the invasive Magallana ( Crassostrea) gigas in Sweden Bergström, Per Thorngren, Linnea Strand, Åsa Lindegarth, Mats Rådman och Fru Ernst Collianders Stiftelse för Välgörande Ändamål 2021 http://dx.doi.org/10.1002/ece3.7451 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.7451 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.7451 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 11, issue 10, page 5522-5532 ISSN 2045-7758 2045-7758 journal-article 2021 crwiley https://doi.org/10.1002/ece3.7451 2024-08-30T04:12:41Z Abstract Aim Understanding spatial patterns of the distribution of adult native oyster, Ostrea edulis , and the invasive Magallana (Crassostrea) gigas is important for management of these populations. The aim of this study was to use ensemble SDM’s to (a) identify and predict conservation hotspots, (b) assess the current level of protection for O. edulis, and (c) quantify the amount of overlap between the two species where interactions with M. gigas are most likely. Location Skagerrak, Sweden. Methods We used data collected by video at depths from 0.5 to 10 m in 436 sites. Models of occurrence and densities >1 m −2 were fitted and assessed using ensemble methods (“biomod2” package). Models of high‐density hotspots were used to predict, map, and quantify areal extent of the species in order to assess the degree of overlap with protected areas and the potential for interactions between the two species. Results Both species were widely distributed in the region. Observations of high‐density habitats, mainly occurring at depths of ≈3 and 0.5 m for O. edulis and M. gigas , respectively, were found in 4% and 2% of the sites. Models provided useful predictions for both species (AUC = 0.85–0.99; sensitivity = 0.74–1.0; specificity = 0.72–0.97). High‐density areas occupy roughly 15 km 2 each with substantial overlap between species. 50% of these are protected only by fisheries regulations, 44% are found in Natura 2000 reserves and 6% of the predicted O. edulis enjoys protection in a national park. Main conclusions Data collection by video in combination with SDM’s provides a realistic approach for large‐scale quantification of spatial patterns of marine population and habitats. O. edulis and M. gigas are common in the area, but a large proportion of the most valuable O. edulis habitats are not found in protected areas. The overlap between species suggests that efforts to manage the invasive M. gigas need to be integrated with management actions to conserve the native O. edulis . Article in Journal/Newspaper Crassostrea gigas Wiley Online Library Ecology and Evolution 11 10 5522 5532 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Aim Understanding spatial patterns of the distribution of adult native oyster, Ostrea edulis , and the invasive Magallana (Crassostrea) gigas is important for management of these populations. The aim of this study was to use ensemble SDM’s to (a) identify and predict conservation hotspots, (b) assess the current level of protection for O. edulis, and (c) quantify the amount of overlap between the two species where interactions with M. gigas are most likely. Location Skagerrak, Sweden. Methods We used data collected by video at depths from 0.5 to 10 m in 436 sites. Models of occurrence and densities >1 m −2 were fitted and assessed using ensemble methods (“biomod2” package). Models of high‐density hotspots were used to predict, map, and quantify areal extent of the species in order to assess the degree of overlap with protected areas and the potential for interactions between the two species. Results Both species were widely distributed in the region. Observations of high‐density habitats, mainly occurring at depths of ≈3 and 0.5 m for O. edulis and M. gigas , respectively, were found in 4% and 2% of the sites. Models provided useful predictions for both species (AUC = 0.85–0.99; sensitivity = 0.74–1.0; specificity = 0.72–0.97). High‐density areas occupy roughly 15 km 2 each with substantial overlap between species. 50% of these are protected only by fisheries regulations, 44% are found in Natura 2000 reserves and 6% of the predicted O. edulis enjoys protection in a national park. Main conclusions Data collection by video in combination with SDM’s provides a realistic approach for large‐scale quantification of spatial patterns of marine population and habitats. O. edulis and M. gigas are common in the area, but a large proportion of the most valuable O. edulis habitats are not found in protected areas. The overlap between species suggests that efforts to manage the invasive M. gigas need to be integrated with management actions to conserve the native O. edulis . |
author2 |
Rådman och Fru Ernst Collianders Stiftelse för Välgörande Ändamål |
format |
Article in Journal/Newspaper |
author |
Bergström, Per Thorngren, Linnea Strand, Åsa Lindegarth, Mats |
spellingShingle |
Bergström, Per Thorngren, Linnea Strand, Åsa Lindegarth, Mats Identifying high‐density areas of oysters using species distribution modeling: Lessons for conservation of the native Ostrea edulis and management of the invasive Magallana ( Crassostrea) gigas in Sweden |
author_facet |
Bergström, Per Thorngren, Linnea Strand, Åsa Lindegarth, Mats |
author_sort |
Bergström, Per |
title |
Identifying high‐density areas of oysters using species distribution modeling: Lessons for conservation of the native Ostrea edulis and management of the invasive Magallana ( Crassostrea) gigas in Sweden |
title_short |
Identifying high‐density areas of oysters using species distribution modeling: Lessons for conservation of the native Ostrea edulis and management of the invasive Magallana ( Crassostrea) gigas in Sweden |
title_full |
Identifying high‐density areas of oysters using species distribution modeling: Lessons for conservation of the native Ostrea edulis and management of the invasive Magallana ( Crassostrea) gigas in Sweden |
title_fullStr |
Identifying high‐density areas of oysters using species distribution modeling: Lessons for conservation of the native Ostrea edulis and management of the invasive Magallana ( Crassostrea) gigas in Sweden |
title_full_unstemmed |
Identifying high‐density areas of oysters using species distribution modeling: Lessons for conservation of the native Ostrea edulis and management of the invasive Magallana ( Crassostrea) gigas in Sweden |
title_sort |
identifying high‐density areas of oysters using species distribution modeling: lessons for conservation of the native ostrea edulis and management of the invasive magallana ( crassostrea) gigas in sweden |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ece3.7451 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.7451 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.7451 |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
Ecology and Evolution volume 11, issue 10, page 5522-5532 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.7451 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
10 |
container_start_page |
5522 |
op_container_end_page |
5532 |
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1810440734962089984 |