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Connecting breeding and wintering grounds of Neotropical migrant songbirds using stable hydrogen isotopes: a call for an isotopic atlas of migratory connectivity
There is an overdue and urgent need to establish patterns of migratory connectivity linking breeding grounds, stopover sites, and wintering grounds of migratory birds. Such information allows more effective application of conservation efforts by applying focused actions along movement trajectories a...
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Published in: | Journal of field ornithology 2014-09, Vol.85 (3), p.237-257 |
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container_title | Journal of field ornithology |
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description | There is an overdue and urgent need to establish patterns of migratory connectivity linking breeding grounds, stopover sites, and wintering grounds of migratory birds. Such information allows more effective application of conservation efforts by applying focused actions along movement trajectories at the population level. Stable isotope methods, especially those using stable hydrogen isotope abundance in feathers (δ²Hf) combined with Bayesian assignment techniques incorporating prior information such as relative abundance of breeding birds, now provide a fast and reliable means of establishing migratory connectivity, especially for Neotropical migrants that breed in North America and molt prior to fall migration. Here we demonstrate how opportunistic sampling of feathers of 30 species of wintering birds in Cuba, Venezuela, Guatemala, Puerto Rico, and Mexico, regions that have typically been poorly sampled for estimating migratory connectivity, can be assigned to breeding areas in North America through both advanced spatial assignment to probability surfaces and through simpler map lookup approaches. Incorporating relative abundance information from the North American Breeding Bird Survey in our Bayesian assignment models generally resulted in a reduction in potential assignment areas on breeding grounds. However, additional tools to constrain longitude such as DNA markers or other isotopes would be desirable for establishing breeding or molt origins of species with broad longitudinal distributions. The isotope approach could act as a rapid means of establishing basic patterns of migratory connectivity across numerous species and populations. We propose a large-scale coordinated sampling effort on the wintering grounds to establish an isotopic atlas of migratory connectivity for North American Neotropical migrants and suggest that isotopic variance be considered as a valuable metric to quantify migratory connectivity. This initiative could then act as a strategic template to guide further efforts involving stable isotopes, light-sensitive geolocators, and other technologies. Hay una atrasada y urgente necesidad para establecer patrones de conectividad migratoria y enlazar las áreas de reproducción, lugares de paradas y áreas invernales en aves migratorias. Tal información nos permitirá realizar una aplicación mas efectiva de los esfuerzos de conservación por medio de la concentración de las acciones a lo largo de las trayectorias de los movimientos a nivel |
doi_str_mv | 10.1111/jofo.12065 |
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Such information allows more effective application of conservation efforts by applying focused actions along movement trajectories at the population level. Stable isotope methods, especially those using stable hydrogen isotope abundance in feathers (δ²Hf) combined with Bayesian assignment techniques incorporating prior information such as relative abundance of breeding birds, now provide a fast and reliable means of establishing migratory connectivity, especially for Neotropical migrants that breed in North America and molt prior to fall migration. Here we demonstrate how opportunistic sampling of feathers of 30 species of wintering birds in Cuba, Venezuela, Guatemala, Puerto Rico, and Mexico, regions that have typically been poorly sampled for estimating migratory connectivity, can be assigned to breeding areas in North America through both advanced spatial assignment to probability surfaces and through simpler map lookup approaches. Incorporating relative abundance information from the North American Breeding Bird Survey in our Bayesian assignment models generally resulted in a reduction in potential assignment areas on breeding grounds. However, additional tools to constrain longitude such as DNA markers or other isotopes would be desirable for establishing breeding or molt origins of species with broad longitudinal distributions. The isotope approach could act as a rapid means of establishing basic patterns of migratory connectivity across numerous species and populations. We propose a large-scale coordinated sampling effort on the wintering grounds to establish an isotopic atlas of migratory connectivity for North American Neotropical migrants and suggest that isotopic variance be considered as a valuable metric to quantify migratory connectivity. This initiative could then act as a strategic template to guide further efforts involving stable isotopes, light-sensitive geolocators, and other technologies. Hay una atrasada y urgente necesidad para establecer patrones de conectividad migratoria y enlazar las áreas de reproducción, lugares de paradas y áreas invernales en aves migratorias. Tal información nos permitirá realizar una aplicación mas efectiva de los esfuerzos de conservación por medio de la concentración de las acciones a lo largo de las trayectorias de los movimientos a nivel poblacional. Los métodos de isotopos estables, especialmente los que utilizan la abundancia de isotopos estables de hidrogeno en las plumas (δ²Hf) combinado con técnicas de asignaciones bayesianas que incorporan información a priori, tales como la abundancia relativa de aves reproduciéndose, proveen una rápida y confiable manera de establecer conectividad migratoria, especialmente para aves migrantes Neotropicales que anidan en América del norte y mudan antes de la migración en el otoño. Aquí demostramos como muestreos oportunos de plumas en 30 especies de aves que pasan el invierno en Cuba, Venezuela, Guatemala, Puerto Rico y México, regiones que típicamente han sido pobremente muestreadas para estimar conectividad migratoria, pueden ser asignadas a áreas de anidación en América del norte a través del avance espacial a una probabilidad de superficie y a través de aproximaciones de observaciones en mapas simples. La incorporación de información sobre abundancias relativas obtenida en nuestros muestreos sobre las aves que anidan en América del norte en nuestros modelos de asignación bayesiana, generalmente resulto en una reducción en asignación de potenciales áreas en los lugares de anidación. Sin embargo, herramientas adicionales que limiten la variación en longitud tales como marcadores de ADN u otros isotopos pueden ser requeridos para establecer orígenes de anidación o muda de especies con una amplia distribución longitudinal. La aproximación isotópica se puede usar como una forma rápida de establecer patrones básicos de conectividad migratoria en muchas especies y poblaciones. Proponemos un esfuerzo de muestreo coordinado y a gran escala en las áreas invernales para establecer un atlas isotópico de conectividad migratoria para los migrantes Neotropicales de América del norte y sugerir que la varianza isotópica puede considerarse como una valiosa medida métrica para cuantificar la conectividad migratoria. Esta iniciativa puede servir como una estrategia base para guiar esfuerzos futuros que involucren isotopos estables, geolocalizadores sensibles a la luz y otras tecnologías.</description><identifier>ISSN: 0273-8570</identifier><identifier>EISSN: 1557-9263</identifier><identifier>DOI: 10.1111/jofo.12065</identifier><identifier>CODEN: JFORDM</identifier><language>eng</language><publisher>New Bedford: Blackwell Publishing Ltd</publisher><subject>Avian Conservation and Management ; Aviculture ; Bayesian statistical methods ; Birds ; Breeding ; Breeding sites ; Connectivity ; conservation ; deuterium ; Feathers ; isoscapes ; Isotopes ; migratory connectivity ; Songbirds ; Warblers ; Wildlife conservation</subject><ispartof>Journal of field ornithology, 2014-09, Vol.85 (3), p.237-257</ispartof><rights>Copyright © 2014 Association of Field Ornithologists</rights><rights>2014 Her Majesty the Queen in Right of Canada. Journal of Field Ornithology © 2014 Association of Field Ornithologists. Reproduced with the permission of the Minister of Environment Canada.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4255-d40768ac830056cbe29badb183a0fba27f83be9b8061aa2fa7d4d152f06977323</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/24617807$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/24617807$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,58238,58471</link.rule.ids></links><search><creatorcontrib>Hobson, Keith A.</creatorcontrib><creatorcontrib>Van Wilgenburg, Steven L.</creatorcontrib><creatorcontrib>Faaborg, John</creatorcontrib><creatorcontrib>Toms, Judith D.</creatorcontrib><creatorcontrib>Rengifo, Carlos</creatorcontrib><creatorcontrib>Sosa, Alejandro Llanes</creatorcontrib><creatorcontrib>Aubry, Yves</creatorcontrib><creatorcontrib>Brito Aguilar, Rafael</creatorcontrib><title>Connecting breeding and wintering grounds of Neotropical migrant songbirds using stable hydrogen isotopes: a call for an isotopic atlas of migratory connectivity</title><title>Journal of field ornithology</title><addtitle>J. Field Ornithol</addtitle><description>There is an overdue and urgent need to establish patterns of migratory connectivity linking breeding grounds, stopover sites, and wintering grounds of migratory birds. Such information allows more effective application of conservation efforts by applying focused actions along movement trajectories at the population level. Stable isotope methods, especially those using stable hydrogen isotope abundance in feathers (δ²Hf) combined with Bayesian assignment techniques incorporating prior information such as relative abundance of breeding birds, now provide a fast and reliable means of establishing migratory connectivity, especially for Neotropical migrants that breed in North America and molt prior to fall migration. Here we demonstrate how opportunistic sampling of feathers of 30 species of wintering birds in Cuba, Venezuela, Guatemala, Puerto Rico, and Mexico, regions that have typically been poorly sampled for estimating migratory connectivity, can be assigned to breeding areas in North America through both advanced spatial assignment to probability surfaces and through simpler map lookup approaches. Incorporating relative abundance information from the North American Breeding Bird Survey in our Bayesian assignment models generally resulted in a reduction in potential assignment areas on breeding grounds. However, additional tools to constrain longitude such as DNA markers or other isotopes would be desirable for establishing breeding or molt origins of species with broad longitudinal distributions. The isotope approach could act as a rapid means of establishing basic patterns of migratory connectivity across numerous species and populations. We propose a large-scale coordinated sampling effort on the wintering grounds to establish an isotopic atlas of migratory connectivity for North American Neotropical migrants and suggest that isotopic variance be considered as a valuable metric to quantify migratory connectivity. This initiative could then act as a strategic template to guide further efforts involving stable isotopes, light-sensitive geolocators, and other technologies. Hay una atrasada y urgente necesidad para establecer patrones de conectividad migratoria y enlazar las áreas de reproducción, lugares de paradas y áreas invernales en aves migratorias. Tal información nos permitirá realizar una aplicación mas efectiva de los esfuerzos de conservación por medio de la concentración de las acciones a lo largo de las trayectorias de los movimientos a nivel poblacional. Los métodos de isotopos estables, especialmente los que utilizan la abundancia de isotopos estables de hidrogeno en las plumas (δ²Hf) combinado con técnicas de asignaciones bayesianas que incorporan información a priori, tales como la abundancia relativa de aves reproduciéndose, proveen una rápida y confiable manera de establecer conectividad migratoria, especialmente para aves migrantes Neotropicales que anidan en América del norte y mudan antes de la migración en el otoño. Aquí demostramos como muestreos oportunos de plumas en 30 especies de aves que pasan el invierno en Cuba, Venezuela, Guatemala, Puerto Rico y México, regiones que típicamente han sido pobremente muestreadas para estimar conectividad migratoria, pueden ser asignadas a áreas de anidación en América del norte a través del avance espacial a una probabilidad de superficie y a través de aproximaciones de observaciones en mapas simples. La incorporación de información sobre abundancias relativas obtenida en nuestros muestreos sobre las aves que anidan en América del norte en nuestros modelos de asignación bayesiana, generalmente resulto en una reducción en asignación de potenciales áreas en los lugares de anidación. Sin embargo, herramientas adicionales que limiten la variación en longitud tales como marcadores de ADN u otros isotopos pueden ser requeridos para establecer orígenes de anidación o muda de especies con una amplia distribución longitudinal. La aproximación isotópica se puede usar como una forma rápida de establecer patrones básicos de conectividad migratoria en muchas especies y poblaciones. Proponemos un esfuerzo de muestreo coordinado y a gran escala en las áreas invernales para establecer un atlas isotópico de conectividad migratoria para los migrantes Neotropicales de América del norte y sugerir que la varianza isotópica puede considerarse como una valiosa medida métrica para cuantificar la conectividad migratoria. Esta iniciativa puede servir como una estrategia base para guiar esfuerzos futuros que involucren isotopos estables, geolocalizadores sensibles a la luz y otras tecnologías.</description><subject>Avian Conservation and Management</subject><subject>Aviculture</subject><subject>Bayesian statistical methods</subject><subject>Birds</subject><subject>Breeding</subject><subject>Breeding sites</subject><subject>Connectivity</subject><subject>conservation</subject><subject>deuterium</subject><subject>Feathers</subject><subject>isoscapes</subject><subject>Isotopes</subject><subject>migratory connectivity</subject><subject>Songbirds</subject><subject>Warblers</subject><subject>Wildlife conservation</subject><issn>0273-8570</issn><issn>1557-9263</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNpdkU9v0zAYxi0EEmXjwh3JEhcu2fwnthNuqGIdW9XuMMTRshMnuKR2sR1GPg7fFKetdsAXv_bzex6_8gvAO4yucF7XO9_5K0wQZy_AAjMmippw-hIsEBG0qJhAr8GbGHcIYU4wWYC_S--caZJ1PdTBmHYulGvhk3XJhPnUBz-6NkLfwY3xKfiDbdQA97YPyiUYveu1DRkY44zHpPRg4I-pDb43Dtrokz-Y-AkqmH0D7HzIL5zvbQNVGtQx_ZiYfJhgc27qt03TJXjVqSGat-f9Any7-fK4vC3W29XX5ed10ZSEsaItkeCVaiqKEOONNqTWqtW4ogp1WhHRVVSbWleIY6VIp0RbtpiRDvFaCEroBfh4yj0E_2s0Mcm9jY0ZBuWMH6PEjPOKUUbKjH74D935MbjcXaYYx4ShmmUKn6gnO5hJHoLdqzBJjOQ8KjmPSh5HJe-2N9tjlT3vT55dzB_x7CElx6JCIuvFSbcxmT_Pugo_JRdUMPl9s5KbB76q-e29XNN_-Lilpg</recordid><startdate>201409</startdate><enddate>201409</enddate><creator>Hobson, Keith A.</creator><creator>Van Wilgenburg, Steven L.</creator><creator>Faaborg, John</creator><creator>Toms, Judith D.</creator><creator>Rengifo, Carlos</creator><creator>Sosa, Alejandro Llanes</creator><creator>Aubry, Yves</creator><creator>Brito Aguilar, Rafael</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services</general><general>Association of Field Ornithologists Inc</general><scope>BSCLL</scope><scope>7QG</scope><scope>7SN</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>201409</creationdate><title>Connecting breeding and wintering grounds of Neotropical migrant songbirds using stable hydrogen isotopes: a call for an isotopic atlas of migratory connectivity</title><author>Hobson, Keith A. ; Van Wilgenburg, Steven L. ; Faaborg, John ; Toms, Judith D. ; Rengifo, Carlos ; Sosa, Alejandro Llanes ; Aubry, Yves ; Brito Aguilar, Rafael</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4255-d40768ac830056cbe29badb183a0fba27f83be9b8061aa2fa7d4d152f06977323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Avian Conservation and Management</topic><topic>Aviculture</topic><topic>Bayesian statistical methods</topic><topic>Birds</topic><topic>Breeding</topic><topic>Breeding sites</topic><topic>Connectivity</topic><topic>conservation</topic><topic>deuterium</topic><topic>Feathers</topic><topic>isoscapes</topic><topic>Isotopes</topic><topic>migratory connectivity</topic><topic>Songbirds</topic><topic>Warblers</topic><topic>Wildlife conservation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hobson, Keith A.</creatorcontrib><creatorcontrib>Van Wilgenburg, Steven L.</creatorcontrib><creatorcontrib>Faaborg, John</creatorcontrib><creatorcontrib>Toms, Judith D.</creatorcontrib><creatorcontrib>Rengifo, Carlos</creatorcontrib><creatorcontrib>Sosa, Alejandro Llanes</creatorcontrib><creatorcontrib>Aubry, Yves</creatorcontrib><creatorcontrib>Brito Aguilar, Rafael</creatorcontrib><collection>Istex</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Journal of field ornithology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hobson, Keith A.</au><au>Van Wilgenburg, Steven L.</au><au>Faaborg, John</au><au>Toms, Judith D.</au><au>Rengifo, Carlos</au><au>Sosa, Alejandro Llanes</au><au>Aubry, Yves</au><au>Brito Aguilar, Rafael</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Connecting breeding and wintering grounds of Neotropical migrant songbirds using stable hydrogen isotopes: a call for an isotopic atlas of migratory connectivity</atitle><jtitle>Journal of field ornithology</jtitle><addtitle>J. Field Ornithol</addtitle><date>2014-09</date><risdate>2014</risdate><volume>85</volume><issue>3</issue><spage>237</spage><epage>257</epage><pages>237-257</pages><issn>0273-8570</issn><eissn>1557-9263</eissn><coden>JFORDM</coden><abstract>There is an overdue and urgent need to establish patterns of migratory connectivity linking breeding grounds, stopover sites, and wintering grounds of migratory birds. Such information allows more effective application of conservation efforts by applying focused actions along movement trajectories at the population level. Stable isotope methods, especially those using stable hydrogen isotope abundance in feathers (δ²Hf) combined with Bayesian assignment techniques incorporating prior information such as relative abundance of breeding birds, now provide a fast and reliable means of establishing migratory connectivity, especially for Neotropical migrants that breed in North America and molt prior to fall migration. Here we demonstrate how opportunistic sampling of feathers of 30 species of wintering birds in Cuba, Venezuela, Guatemala, Puerto Rico, and Mexico, regions that have typically been poorly sampled for estimating migratory connectivity, can be assigned to breeding areas in North America through both advanced spatial assignment to probability surfaces and through simpler map lookup approaches. Incorporating relative abundance information from the North American Breeding Bird Survey in our Bayesian assignment models generally resulted in a reduction in potential assignment areas on breeding grounds. However, additional tools to constrain longitude such as DNA markers or other isotopes would be desirable for establishing breeding or molt origins of species with broad longitudinal distributions. The isotope approach could act as a rapid means of establishing basic patterns of migratory connectivity across numerous species and populations. We propose a large-scale coordinated sampling effort on the wintering grounds to establish an isotopic atlas of migratory connectivity for North American Neotropical migrants and suggest that isotopic variance be considered as a valuable metric to quantify migratory connectivity. This initiative could then act as a strategic template to guide further efforts involving stable isotopes, light-sensitive geolocators, and other technologies. Hay una atrasada y urgente necesidad para establecer patrones de conectividad migratoria y enlazar las áreas de reproducción, lugares de paradas y áreas invernales en aves migratorias. Tal información nos permitirá realizar una aplicación mas efectiva de los esfuerzos de conservación por medio de la concentración de las acciones a lo largo de las trayectorias de los movimientos a nivel poblacional. Los métodos de isotopos estables, especialmente los que utilizan la abundancia de isotopos estables de hidrogeno en las plumas (δ²Hf) combinado con técnicas de asignaciones bayesianas que incorporan información a priori, tales como la abundancia relativa de aves reproduciéndose, proveen una rápida y confiable manera de establecer conectividad migratoria, especialmente para aves migrantes Neotropicales que anidan en América del norte y mudan antes de la migración en el otoño. Aquí demostramos como muestreos oportunos de plumas en 30 especies de aves que pasan el invierno en Cuba, Venezuela, Guatemala, Puerto Rico y México, regiones que típicamente han sido pobremente muestreadas para estimar conectividad migratoria, pueden ser asignadas a áreas de anidación en América del norte a través del avance espacial a una probabilidad de superficie y a través de aproximaciones de observaciones en mapas simples. La incorporación de información sobre abundancias relativas obtenida en nuestros muestreos sobre las aves que anidan en América del norte en nuestros modelos de asignación bayesiana, generalmente resulto en una reducción en asignación de potenciales áreas en los lugares de anidación. Sin embargo, herramientas adicionales que limiten la variación en longitud tales como marcadores de ADN u otros isotopos pueden ser requeridos para establecer orígenes de anidación o muda de especies con una amplia distribución longitudinal. La aproximación isotópica se puede usar como una forma rápida de establecer patrones básicos de conectividad migratoria en muchas especies y poblaciones. Proponemos un esfuerzo de muestreo coordinado y a gran escala en las áreas invernales para establecer un atlas isotópico de conectividad migratoria para los migrantes Neotropicales de América del norte y sugerir que la varianza isotópica puede considerarse como una valiosa medida métrica para cuantificar la conectividad migratoria. Esta iniciativa puede servir como una estrategia base para guiar esfuerzos futuros que involucren isotopos estables, geolocalizadores sensibles a la luz y otras tecnologías.</abstract><cop>New Bedford</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/jofo.12065</doi><tpages>21</tpages></addata></record> |
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subjects | Avian Conservation and Management Aviculture Bayesian statistical methods Birds Breeding Breeding sites Connectivity conservation deuterium Feathers isoscapes Isotopes migratory connectivity Songbirds Warblers Wildlife conservation |
title | Connecting breeding and wintering grounds of Neotropical migrant songbirds using stable hydrogen isotopes: a call for an isotopic atlas of migratory connectivity |
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