A weather surveillance radar view of Alaskan avian migration
Monitoring avian migration within subarctic regions of the globe poses logistical challenges. Populations in these regions often encounter the most rapid effects of changing climates, and these seasonally productive areas are especially important in supporting bird populations—emphasizing the need f...
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ftpubmed:oai:pubmedcentral.nih.gov:8097201 2023-05-15T18:28:28+02:00 A weather surveillance radar view of Alaskan avian migration Sivakumar, Ashwin H. Sheldon, Daniel Winner, Kevin Burt, Carolyn S. Horton, Kyle G. 2021-05-12 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8097201/ http://www.ncbi.nlm.nih.gov/pubmed/33947241 https://doi.org/10.1098/rspb.2021.0232 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8097201/ http://www.ncbi.nlm.nih.gov/pubmed/33947241 http://dx.doi.org/10.1098/rspb.2021.0232 © 2021 The Author(s) https://royalsociety.org/-/media/journals/author/Licence-to-Publish-20062019-final.pdfhttps://royalsociety.org/journals/ethics-policies/data-sharing-mining/Published by the Royal Society. All rights reserved. Proc Biol Sci Biological Applications Text 2021 ftpubmed https://doi.org/10.1098/rspb.2021.0232 2022-05-15T00:25:48Z Monitoring avian migration within subarctic regions of the globe poses logistical challenges. Populations in these regions often encounter the most rapid effects of changing climates, and these seasonally productive areas are especially important in supporting bird populations—emphasizing the need for monitoring tools and strategies. To this end, we leverage the untapped potential of weather surveillance radar data to quantify active migration through the airspaces of Alaska. We use over 400 000 NEXRAD radar scans from seven stations across the state between 1995 and 2018 (86% of samples derived from 2013 to 2018) to measure spring and autumn migration intensity, phenology and directionality. A large bow-shaped terrestrial migratory system spanning the southern two-thirds of the state was identified, with birds generally moving along a northwest–southeast diagonal axis east of the 150th meridian, and along a northeast–southwest axis west of this meridian. Spring peak migration ranged from 3 May to 30 May and between, 18 August and 12 September during the autumn, with timing across stations predicted by longitude, rather than latitude. Across all stations, the intensity of migration was greatest during the autumn as compared to spring, highlighting the opportunity to measure seasonal indices of net breeding productivity for this important system as additional years of radar measurements are amassed. Text Subarctic Alaska PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 288 1950 |
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English |
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Biological Applications |
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Biological Applications Sivakumar, Ashwin H. Sheldon, Daniel Winner, Kevin Burt, Carolyn S. Horton, Kyle G. A weather surveillance radar view of Alaskan avian migration |
topic_facet |
Biological Applications |
description |
Monitoring avian migration within subarctic regions of the globe poses logistical challenges. Populations in these regions often encounter the most rapid effects of changing climates, and these seasonally productive areas are especially important in supporting bird populations—emphasizing the need for monitoring tools and strategies. To this end, we leverage the untapped potential of weather surveillance radar data to quantify active migration through the airspaces of Alaska. We use over 400 000 NEXRAD radar scans from seven stations across the state between 1995 and 2018 (86% of samples derived from 2013 to 2018) to measure spring and autumn migration intensity, phenology and directionality. A large bow-shaped terrestrial migratory system spanning the southern two-thirds of the state was identified, with birds generally moving along a northwest–southeast diagonal axis east of the 150th meridian, and along a northeast–southwest axis west of this meridian. Spring peak migration ranged from 3 May to 30 May and between, 18 August and 12 September during the autumn, with timing across stations predicted by longitude, rather than latitude. Across all stations, the intensity of migration was greatest during the autumn as compared to spring, highlighting the opportunity to measure seasonal indices of net breeding productivity for this important system as additional years of radar measurements are amassed. |
format |
Text |
author |
Sivakumar, Ashwin H. Sheldon, Daniel Winner, Kevin Burt, Carolyn S. Horton, Kyle G. |
author_facet |
Sivakumar, Ashwin H. Sheldon, Daniel Winner, Kevin Burt, Carolyn S. Horton, Kyle G. |
author_sort |
Sivakumar, Ashwin H. |
title |
A weather surveillance radar view of Alaskan avian migration |
title_short |
A weather surveillance radar view of Alaskan avian migration |
title_full |
A weather surveillance radar view of Alaskan avian migration |
title_fullStr |
A weather surveillance radar view of Alaskan avian migration |
title_full_unstemmed |
A weather surveillance radar view of Alaskan avian migration |
title_sort |
weather surveillance radar view of alaskan avian migration |
publisher |
The Royal Society |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8097201/ http://www.ncbi.nlm.nih.gov/pubmed/33947241 https://doi.org/10.1098/rspb.2021.0232 |
genre |
Subarctic Alaska |
genre_facet |
Subarctic Alaska |
op_source |
Proc Biol Sci |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8097201/ http://www.ncbi.nlm.nih.gov/pubmed/33947241 http://dx.doi.org/10.1098/rspb.2021.0232 |
op_rights |
© 2021 The Author(s) https://royalsociety.org/-/media/journals/author/Licence-to-Publish-20062019-final.pdfhttps://royalsociety.org/journals/ethics-policies/data-sharing-mining/Published by the Royal Society. All rights reserved. |
op_doi |
https://doi.org/10.1098/rspb.2021.0232 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
288 |
container_issue |
1950 |
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1766210950612910080 |