Summary Regional and local studies suggest that the Tufted Puffin Fratercula cirrhata in North Am... more Summary Regional and local studies suggest that the Tufted Puffin Fratercula cirrhata in North America is declining in portions of its range. However, whether the overall population is declining, or its range is contracting with little change to the overall population size, is unknown. To examine population trends throughout its North American range, we assembled 11 datasets that spanned 115 years (1905–2019) and included at-sea density and encounter estimates and at-colony burrow and bird counts. We assessed trends for the California Current, Gulf of Alaska, and Bering Sea/Aleutian Islands large marine ecosystems (LME). We found: (1) nearly uniform and long-term declines of Puffins breeding in the California Current ecosystem, with most ecosystem colonies surveyed, (2) declining trends at two large colonies and in one at-sea dataset in the Gulf of Alaska LME, with the fourth smaller colony exhibiting no significant trend, and (3) positive trends at four out of five colonies in the ...
Comma-separated-value file containing the raw burrow occupancy and hatching success data. Each ro... more Comma-separated-value file containing the raw burrow occupancy and hatching success data. Each row corresponds to one breeding burrow. Please refer to the README file for additional details
Since the production of plastic products began nearly a century ago, plastics have been making th... more Since the production of plastic products began nearly a century ago, plastics have been making their way into the world’s oceans. At least 250 marine species are known to have been affected by plastic debris through ingestion, starvation, suffocation and/or entanglement.1,2 The susceptibility of marine birds to ingestion of plastics has proven to be a useful biological indicator of plastic pollution. Marine birds in the order Procellariiformes, including the Northern Fulmar (Fulmarus glacialis), are among those most at risk for ingestion of plastic debris due to their surface feeding methods.3,4 Fulmars possess several characteristics that make them effective indicators: they are abundant, forage exclusively at sea, and have a wide geographical range.5 In this study, the stomach contents of Northern Fulmars were examined to quantify patterns of marine plastic pollution in the Pacific Northwest. • Stomach (proventriculus + gizzard) contents from:
We tested the hypothesis that segregation in wintering areas is associated with population differ... more We tested the hypothesis that segregation in wintering areas is associated with population differentiation in a sentinel North Pacific seabird, the rhinoceros auklet (Cerorhinca monocerata). We collected tissue samples for genetic analyses on five breeding colonies in the western Pacific Ocean (Japan) and on 13 colonies in the eastern Pacific Ocean (California to Alaska), and deployed light-level geolocator tags on 12 eastern Pacific colonies to delineate wintering areas. Geolocator tags were deployed previously on one colony in Japan. There was strong genetic differentiation between populations in the eastern vs. western Pacific Ocean, likely due to two factors. First, glaciation over the North Pacific in the late Pleistocene might have forced a southward range shift that historically isolated the eastern and western populations. And second, deep-ocean habitat along the northern continental shelf appears to act as a barrier to movement; abundant on both sides of the North Pacific, ...
La contaminacion luminica afecta a las aves marinas por la atraccion hacia fuentes de luz y su po... more La contaminacion luminica afecta a las aves marinas por la atraccion hacia fuentes de luz y su posterior caida ( fallout ) en todo el mundo, siendo los petreles y fardelas las especies mas afectadas. La contaminacion luminica esta aumentando globalmente y probablemen- te sus efectos sobre estas aves se incrementen en los proximos anos. Pese a que existe una evaluacion global de esta materia, no existe in- formacion detallada para Sudamerica; por esto, el objetivo de este articulo es elaborar un diagnostico de la situacion en Chile, a fin de sugerir un enfoque tecnico y politico para el pais y promover la discusion y acciones al respecto para la region sudamericana. Para ello, se elaboro un diagnostico de las especies de aves marinas y territorios afectados a traves de la consulta directa a investigadores, la revision sistematica y busqueda en bases de datos de acceso libre. En Chile, 17 especies de aves marinas son afectadas por la contaminacion luminica, incluyendo seis especies no...
Summary Regional and local studies suggest that the Tufted Puffin Fratercula cirrhata in North Am... more Summary Regional and local studies suggest that the Tufted Puffin Fratercula cirrhata in North America is declining in portions of its range. However, whether the overall population is declining, or its range is contracting with little change to the overall population size, is unknown. To examine population trends throughout its North American range, we assembled 11 datasets that spanned 115 years (1905–2019) and included at-sea density and encounter estimates and at-colony burrow and bird counts. We assessed trends for the California Current, Gulf of Alaska, and Bering Sea/Aleutian Islands large marine ecosystems (LME). We found: (1) nearly uniform and long-term declines of Puffins breeding in the California Current ecosystem, with most ecosystem colonies surveyed, (2) declining trends at two large colonies and in one at-sea dataset in the Gulf of Alaska LME, with the fourth smaller colony exhibiting no significant trend, and (3) positive trends at four out of five colonies in the ...
Comma-separated-value file containing the raw burrow occupancy and hatching success data. Each ro... more Comma-separated-value file containing the raw burrow occupancy and hatching success data. Each row corresponds to one breeding burrow. Please refer to the README file for additional details
Since the production of plastic products began nearly a century ago, plastics have been making th... more Since the production of plastic products began nearly a century ago, plastics have been making their way into the world’s oceans. At least 250 marine species are known to have been affected by plastic debris through ingestion, starvation, suffocation and/or entanglement.1,2 The susceptibility of marine birds to ingestion of plastics has proven to be a useful biological indicator of plastic pollution. Marine birds in the order Procellariiformes, including the Northern Fulmar (Fulmarus glacialis), are among those most at risk for ingestion of plastic debris due to their surface feeding methods.3,4 Fulmars possess several characteristics that make them effective indicators: they are abundant, forage exclusively at sea, and have a wide geographical range.5 In this study, the stomach contents of Northern Fulmars were examined to quantify patterns of marine plastic pollution in the Pacific Northwest. • Stomach (proventriculus + gizzard) contents from:
We tested the hypothesis that segregation in wintering areas is associated with population differ... more We tested the hypothesis that segregation in wintering areas is associated with population differentiation in a sentinel North Pacific seabird, the rhinoceros auklet (Cerorhinca monocerata). We collected tissue samples for genetic analyses on five breeding colonies in the western Pacific Ocean (Japan) and on 13 colonies in the eastern Pacific Ocean (California to Alaska), and deployed light-level geolocator tags on 12 eastern Pacific colonies to delineate wintering areas. Geolocator tags were deployed previously on one colony in Japan. There was strong genetic differentiation between populations in the eastern vs. western Pacific Ocean, likely due to two factors. First, glaciation over the North Pacific in the late Pleistocene might have forced a southward range shift that historically isolated the eastern and western populations. And second, deep-ocean habitat along the northern continental shelf appears to act as a barrier to movement; abundant on both sides of the North Pacific, ...
La contaminacion luminica afecta a las aves marinas por la atraccion hacia fuentes de luz y su po... more La contaminacion luminica afecta a las aves marinas por la atraccion hacia fuentes de luz y su posterior caida ( fallout ) en todo el mundo, siendo los petreles y fardelas las especies mas afectadas. La contaminacion luminica esta aumentando globalmente y probablemen- te sus efectos sobre estas aves se incrementen en los proximos anos. Pese a que existe una evaluacion global de esta materia, no existe in- formacion detallada para Sudamerica; por esto, el objetivo de este articulo es elaborar un diagnostico de la situacion en Chile, a fin de sugerir un enfoque tecnico y politico para el pais y promover la discusion y acciones al respecto para la region sudamericana. Para ello, se elaboro un diagnostico de las especies de aves marinas y territorios afectados a traves de la consulta directa a investigadores, la revision sistematica y busqueda en bases de datos de acceso libre. En Chile, 17 especies de aves marinas son afectadas por la contaminacion luminica, incluyendo seis especies no...
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