Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways

Migrating animals are known to play an important role in nutrient transfer over short distances; however, this phenomenon has not been well studied for long-distance migrants. In this preliminary study, we focused on nitrogen (N) transfer by 44 bird species that migrate from Eurasia to two regions i...

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Autores principales:	Varriano Sofia, Mallon Julie M., Folta Cody, Coulibaly Hawa, Krajcir Kevin J., McClung Maureen R., Fagan William F., Moran Matthew D.
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2020
Materias:	bird migration bird mortality nonbreeding season nitrogen cycle african-eurasian flyways Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/2e11e75ef8924abdad6d0c8bb59c4d4b
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spelling	oai:doaj.org-article:2e11e75ef8924abdad6d0c8bb59c4d4b2021-12-02T19:11:09ZTransfer of nitrogen by migratory birds in the African-Western Eurasian Flyways2084-883810.1515/ami-2020-0101https://doaj.org/article/2e11e75ef8924abdad6d0c8bb59c4d4b2020-10-01T00:00:00Zhttps://doi.org/10.1515/ami-2020-0101https://doaj.org/toc/2084-8838Migrating animals are known to play an important role in nutrient transfer over short distances; however, this phenomenon has not been well studied for long-distance migrants. In this preliminary study, we focused on nitrogen (N) transfer by 44 bird species that migrate from Eurasia to two regions in sub-Saharan Africa that fall into the lowest 10% quantile of global N-deposition (mean annual deposition ≤ 10.44 mg/m2/year). We estimated the number of birds that die during the non-breeding season in these areas and then used N content and species-specific mass values to calculate annual N-deposition rates. For these two areas of low N-deposition, we found that bird mortality contributed 0.2 – 1.1% of total nitrogen deposition, which is a relatively small proportion. Therefore, we conclude that nitrogen transfer by long-distance bird migrants using the East Atlantic Flyway and the West Asian-East African Flyway currently has limited impact on the sub-Saharan nitrogen cycle. However, it is worth noting that this impact may have been more important in the past due to larger bird populations and lower background N-deposition (i.e., less anthropogenic impact).Varriano SofiaMallon Julie M.Folta CodyCoulibaly HawaKrajcir Kevin J.McClung Maureen R.Fagan William F.Moran Matthew D.De Gruyterarticlebird migrationbird mortalitynonbreeding seasonnitrogen cycleafrican-eurasian flywaysBiology (General)QH301-705.5ENAnimal Migration, Vol 7, Iss 1, Pp 52-57 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	bird migration bird mortality nonbreeding season nitrogen cycle african-eurasian flyways Biology (General) QH301-705.5
spellingShingle	bird migration bird mortality nonbreeding season nitrogen cycle african-eurasian flyways Biology (General) QH301-705.5 Varriano Sofia Mallon Julie M. Folta Cody Coulibaly Hawa Krajcir Kevin J. McClung Maureen R. Fagan William F. Moran Matthew D. Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways
description	Migrating animals are known to play an important role in nutrient transfer over short distances; however, this phenomenon has not been well studied for long-distance migrants. In this preliminary study, we focused on nitrogen (N) transfer by 44 bird species that migrate from Eurasia to two regions in sub-Saharan Africa that fall into the lowest 10% quantile of global N-deposition (mean annual deposition ≤ 10.44 mg/m2/year). We estimated the number of birds that die during the non-breeding season in these areas and then used N content and species-specific mass values to calculate annual N-deposition rates. For these two areas of low N-deposition, we found that bird mortality contributed 0.2 – 1.1% of total nitrogen deposition, which is a relatively small proportion. Therefore, we conclude that nitrogen transfer by long-distance bird migrants using the East Atlantic Flyway and the West Asian-East African Flyway currently has limited impact on the sub-Saharan nitrogen cycle. However, it is worth noting that this impact may have been more important in the past due to larger bird populations and lower background N-deposition (i.e., less anthropogenic impact).
format	article
author	Varriano Sofia Mallon Julie M. Folta Cody Coulibaly Hawa Krajcir Kevin J. McClung Maureen R. Fagan William F. Moran Matthew D.
author_facet	Varriano Sofia Mallon Julie M. Folta Cody Coulibaly Hawa Krajcir Kevin J. McClung Maureen R. Fagan William F. Moran Matthew D.
author_sort	Varriano Sofia
title	Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways
title_short	Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways
title_full	Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways
title_fullStr	Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways
title_full_unstemmed	Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways
title_sort	transfer of nitrogen by migratory birds in the african-western eurasian flyways
publisher	De Gruyter
publishDate	2020
url	https://doaj.org/article/2e11e75ef8924abdad6d0c8bb59c4d4b
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Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways

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