Climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds
Abstract Spatial and temporal distribution of seabird transiting and foraging at sea is an important consideration for marine conservation planning. Using at‐sea observations of seabirds (n = 317), collected during the breeding season from 2012 to 2016, we built boosted regression tree (BRT) models...
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ftdoajarticles:oai:doaj.org/article:cca47f614e454e2fb22aaf4d9ca048f8 2023-05-15T18:05:39+02:00 Climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds Julian Perez‐Correa Peter Carr Jessica J. Meeuwig Heather J. Koldewey Tom B. Letessier 2020-09-01T00:00:00Z https://doi.org/10.1002/ece3.6621 https://doaj.org/article/cca47f614e454e2fb22aaf4d9ca048f8 EN eng Wiley https://doi.org/10.1002/ece3.6621 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.6621 https://doaj.org/article/cca47f614e454e2fb22aaf4d9ca048f8 Ecology and Evolution, Vol 10, Iss 17, Pp 9339-9357 (2020) boosted regression tree British Indian Ocean Territory Chagos Archipelago island invasive species marine protected areas Rattus rattus Ecology QH540-549.5 article 2020 ftdoajarticles https://doi.org/10.1002/ece3.6621 2022-12-31T05:30:18Z Abstract Spatial and temporal distribution of seabird transiting and foraging at sea is an important consideration for marine conservation planning. Using at‐sea observations of seabirds (n = 317), collected during the breeding season from 2012 to 2016, we built boosted regression tree (BRT) models to identify relationships between numerically dominant seabird species (red‐footed booby, brown noddy, white tern, and wedge‐tailed shearwater), geomorphology, oceanographic variability, and climate oscillation in the Chagos Archipelago. We documented positive relationships between red‐footed booby and wedge‐tailed shearwater abundance with the strength in the Indian Ocean Dipole, as represented by the Dipole Mode Index (6.7% and 23.7% contribution, respectively). The abundance of red‐footed boobies, brown noddies, and white terns declined abruptly with greater distance to island (17.6%, 34.1%, and 41.1% contribution, respectively). We further quantified the effects of proximity to rat‐free and rat‐invaded islands on seabird distribution at sea and identified breaking point distribution thresholds. We detected areas of increased abundance at sea and habitat use‐age under a scenario where rats are eradicated from invaded nearby islands and recolonized by seabirds. Following rat eradication, abundance at sea of red‐footed booby, brown noddy, and white terns increased by 14%, 17%, and 3%, respectively, with no important increase detected for shearwaters. Our results have implication for seabird conservation and island restoration. Climate oscillations may cause shifts in seabird distribution, possibly through changes in regional productivity and prey distribution. Invasive species eradications and subsequent island recolonization can lead to greater access for seabirds to areas at sea, due to increased foraging or transiting through, potentially leading to distribution gains and increased competition. Our approach predicting distribution after successful eradications enables anticipatory threat mitigation in these areas, ... Article in Journal/Newspaper Rattus rattus Directory of Open Access Journals: DOAJ Articles Indian Ecology and Evolution 10 17 9339 9357 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
boosted regression tree British Indian Ocean Territory Chagos Archipelago island invasive species marine protected areas Rattus rattus Ecology QH540-549.5 |
spellingShingle |
boosted regression tree British Indian Ocean Territory Chagos Archipelago island invasive species marine protected areas Rattus rattus Ecology QH540-549.5 Julian Perez‐Correa Peter Carr Jessica J. Meeuwig Heather J. Koldewey Tom B. Letessier Climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds |
topic_facet |
boosted regression tree British Indian Ocean Territory Chagos Archipelago island invasive species marine protected areas Rattus rattus Ecology QH540-549.5 |
description |
Abstract Spatial and temporal distribution of seabird transiting and foraging at sea is an important consideration for marine conservation planning. Using at‐sea observations of seabirds (n = 317), collected during the breeding season from 2012 to 2016, we built boosted regression tree (BRT) models to identify relationships between numerically dominant seabird species (red‐footed booby, brown noddy, white tern, and wedge‐tailed shearwater), geomorphology, oceanographic variability, and climate oscillation in the Chagos Archipelago. We documented positive relationships between red‐footed booby and wedge‐tailed shearwater abundance with the strength in the Indian Ocean Dipole, as represented by the Dipole Mode Index (6.7% and 23.7% contribution, respectively). The abundance of red‐footed boobies, brown noddies, and white terns declined abruptly with greater distance to island (17.6%, 34.1%, and 41.1% contribution, respectively). We further quantified the effects of proximity to rat‐free and rat‐invaded islands on seabird distribution at sea and identified breaking point distribution thresholds. We detected areas of increased abundance at sea and habitat use‐age under a scenario where rats are eradicated from invaded nearby islands and recolonized by seabirds. Following rat eradication, abundance at sea of red‐footed booby, brown noddy, and white terns increased by 14%, 17%, and 3%, respectively, with no important increase detected for shearwaters. Our results have implication for seabird conservation and island restoration. Climate oscillations may cause shifts in seabird distribution, possibly through changes in regional productivity and prey distribution. Invasive species eradications and subsequent island recolonization can lead to greater access for seabirds to areas at sea, due to increased foraging or transiting through, potentially leading to distribution gains and increased competition. Our approach predicting distribution after successful eradications enables anticipatory threat mitigation in these areas, ... |
format |
Article in Journal/Newspaper |
author |
Julian Perez‐Correa Peter Carr Jessica J. Meeuwig Heather J. Koldewey Tom B. Letessier |
author_facet |
Julian Perez‐Correa Peter Carr Jessica J. Meeuwig Heather J. Koldewey Tom B. Letessier |
author_sort |
Julian Perez‐Correa |
title |
Climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds |
title_short |
Climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds |
title_full |
Climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds |
title_fullStr |
Climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds |
title_full_unstemmed |
Climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds |
title_sort |
climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds |
publisher |
Wiley |
publishDate |
2020 |
url |
https://doi.org/10.1002/ece3.6621 https://doaj.org/article/cca47f614e454e2fb22aaf4d9ca048f8 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
Ecology and Evolution, Vol 10, Iss 17, Pp 9339-9357 (2020) |
op_relation |
https://doi.org/10.1002/ece3.6621 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.6621 https://doaj.org/article/cca47f614e454e2fb22aaf4d9ca048f8 |
op_doi |
https://doi.org/10.1002/ece3.6621 |
container_title |
Ecology and Evolution |
container_volume |
10 |
container_issue |
17 |
container_start_page |
9339 |
op_container_end_page |
9357 |
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1766177137918738432 |