A weather surveillance radar view of Alaskan avian migration
| العنوان: | A weather surveillance radar view of Alaskan avian migration |
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| المؤلفون: | Kyle G. Horton, Kevin Winner, Ashwin H. Sivakumar, Carolyn S. Burt, Daniel Sheldon |
| المصدر: | Proc Biol Sci |
| بيانات النشر: | The Royal Society, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 0106 biological sciences, 010504 meteorology & atmospheric sciences, Bird migration, 010603 evolutionary biology, 01 natural sciences, General Biochemistry, Genetics and Molecular Biology, Latitude, law.invention, Birds, law, Animals, Radar, Weather, Macroecology, 0105 earth and related environmental sciences, General Environmental Science, General Immunology and Microbiology, Phenology, General Medicine, NEXRAD, Subarctic climate, Geography, Animal Migration, Seasons, Physical geography, Biological Applications, General Agricultural and Biological Sciences, Longitude, Alaska |
| الوصف: | 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. |
| تدمد: | 1471-2954 0962-8452 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1bb7ef835b4ccce069cf07449e3431c https://doi.org/10.1098/rspb.2021.0232 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....e1bb7ef835b4ccce069cf07449e3431c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14712954 09628452 |
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