Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)

Autores
Martínez Curci, Natalia Soledad; Bremer, Esteban; Azpiroz, Adrián B.; Battaglia, Gabriel E.; Salerno, Javier C.; Isacch, Juan Pablo; González, Patricia M.; Castresana, Gabriel J.; Rojas, Pablo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
From 1985 to 2014, we monitored numbers of Red Knots Calidris canutus of the subspecies rufa occurring at Punta Rasa, Samborombón Bay, Buenos Aires province, Argentina during northward migration (March to April), and in the austral winter (mid-May to mid-August), when some knots, mainly immatures, remain in South America during the breeding season. Numbers occurring during northward migration declined over the monitoring period from a peak of 3,640 in 1987 to 168 in 2014. This is consistent with the concurrent decline of the main Tierra del Fuego wintering population (though the percentage of the Tierra del Fuego population stopping at Punta Rasa also declined from 5.4% to 1.3%). Numbers occurring at Punta Rasa during the austral winter have also declined, but not to the same extent and for the past decade more have been counted during the austral winter than during northward migration. Among those seen at Punta Rasa during the Arctic breeding season have been some with large amounts of rufous breeding plumage. The percentage of such birds has increased from 10–15% in 1987 to 19–54% during 2011–2014. Moreover, observations of individually marked birds show that some of those showing breeding plumage are mature adults, at least 3–7 years old. Conservation actions are required to manage Punta Rasa for the small but important numbers of Red Knots that occur there. Further research is needed to determine why some mature adults do not go to their Arctic breeding grounds and thereby fail to contribute to reproduction.
Fil: Martínez Curci, Natalia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Bremer, Esteban. Fundación Vida Silvestre Argentina; Argentina
Fil: Azpiroz, Adrián B.. Instituto de Investigaciones Biológicas "Clemente Estable"; Uruguay
Fil: Battaglia, Gabriel E.. Municipalidad del partido de La Costa; Argentina
Fil: Salerno, Javier C.. Municipalidad del partido de La Costa; Argentina
Fil: Isacch, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: González, Patricia M.. Fundación Inalafquen; Argentina
Fil: Castresana, Gabriel J.. Reserva Natural Bahía Samborombón; Argentina
Fil: Rojas, Pablo. Reserva Natural Bahía Samborombón; Argentina
Materia
Calidris Canutus Rufa
Over-Summering
Punta Rasa
Red Knot
South America
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/60216
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/60216
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)Martínez Curci, Natalia SoledadBremer, EstebanAzpiroz, Adrián B.Battaglia, Gabriel E.Salerno, Javier C.Isacch, Juan PabloGonzález, Patricia M.Castresana, Gabriel J.Rojas, PabloCalidris Canutus RufaOver-SummeringPunta RasaRed KnotSouth Americahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1From 1985 to 2014, we monitored numbers of Red Knots Calidris canutus of the subspecies rufa occurring at Punta Rasa, Samborombón Bay, Buenos Aires province, Argentina during northward migration (March to April), and in the austral winter (mid-May to mid-August), when some knots, mainly immatures, remain in South America during the breeding season. Numbers occurring during northward migration declined over the monitoring period from a peak of 3,640 in 1987 to 168 in 2014. This is consistent with the concurrent decline of the main Tierra del Fuego wintering population (though the percentage of the Tierra del Fuego population stopping at Punta Rasa also declined from 5.4% to 1.3%). Numbers occurring at Punta Rasa during the austral winter have also declined, but not to the same extent and for the past decade more have been counted during the austral winter than during northward migration. Among those seen at Punta Rasa during the Arctic breeding season have been some with large amounts of rufous breeding plumage. The percentage of such birds has increased from 10–15% in 1987 to 19–54% during 2011–2014. Moreover, observations of individually marked birds show that some of those showing breeding plumage are mature adults, at least 3–7 years old. Conservation actions are required to manage Punta Rasa for the small but important numbers of Red Knots that occur there. Further research is needed to determine why some mature adults do not go to their Arctic breeding grounds and thereby fail to contribute to reproduction.Fil: Martínez Curci, Natalia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Bremer, Esteban. Fundación Vida Silvestre Argentina; ArgentinaFil: Azpiroz, Adrián B.. Instituto de Investigaciones Biológicas "Clemente Estable"; UruguayFil: Battaglia, Gabriel E.. Municipalidad del partido de La Costa; ArgentinaFil: Salerno, Javier C.. Municipalidad del partido de La Costa; ArgentinaFil: Isacch, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: González, Patricia M.. Fundación Inalafquen; ArgentinaFil: Castresana, Gabriel J.. Reserva Natural Bahía Samborombón; ArgentinaFil: Rojas, Pablo. Reserva Natural Bahía Samborombón; ArgentinaInternational Wader Study Group2015-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/60216Martínez Curci, Natalia Soledad; Bremer, Esteban; Azpiroz, Adrián B.; Battaglia, Gabriel E.; Salerno, Javier C.; et al.; Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014); International Wader Study Group; Wader Study; 122; 3; 12-2015; 236-2422058-8410CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.18194/ws.00018info:eu-repo/semantics/altIdentifier/url/http://www.waderstudygroup.org/article/7301/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:28Zoai:ri.conicet.gov.ar:11336/60216instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:40:29.091CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)
title Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)
spellingShingle Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)
Martínez Curci, Natalia Soledad
Calidris Canutus Rufa
Over-Summering
Punta Rasa
Red Knot
South America
title_short Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)
title_full Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)
title_fullStr Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)
title_full_unstemmed Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)
title_sort Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)
dc.creator.none.fl_str_mv Martínez Curci, Natalia Soledad
Bremer, Esteban
Azpiroz, Adrián B.
Battaglia, Gabriel E.
Salerno, Javier C.
Isacch, Juan Pablo
González, Patricia M.
Castresana, Gabriel J.
Rojas, Pablo
author Martínez Curci, Natalia Soledad
author_facet Martínez Curci, Natalia Soledad
Bremer, Esteban
Azpiroz, Adrián B.
Battaglia, Gabriel E.
Salerno, Javier C.
Isacch, Juan Pablo
González, Patricia M.
Castresana, Gabriel J.
Rojas, Pablo
author_role author
author2 Bremer, Esteban
Azpiroz, Adrián B.
Battaglia, Gabriel E.
Salerno, Javier C.
Isacch, Juan Pablo
González, Patricia M.
Castresana, Gabriel J.
Rojas, Pablo
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Calidris Canutus Rufa
Over-Summering
Punta Rasa
Red Knot
South America
topic Calidris Canutus Rufa
Over-Summering
Punta Rasa
Red Knot
South America
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv From 1985 to 2014, we monitored numbers of Red Knots Calidris canutus of the subspecies rufa occurring at Punta Rasa, Samborombón Bay, Buenos Aires province, Argentina during northward migration (March to April), and in the austral winter (mid-May to mid-August), when some knots, mainly immatures, remain in South America during the breeding season. Numbers occurring during northward migration declined over the monitoring period from a peak of 3,640 in 1987 to 168 in 2014. This is consistent with the concurrent decline of the main Tierra del Fuego wintering population (though the percentage of the Tierra del Fuego population stopping at Punta Rasa also declined from 5.4% to 1.3%). Numbers occurring at Punta Rasa during the austral winter have also declined, but not to the same extent and for the past decade more have been counted during the austral winter than during northward migration. Among those seen at Punta Rasa during the Arctic breeding season have been some with large amounts of rufous breeding plumage. The percentage of such birds has increased from 10–15% in 1987 to 19–54% during 2011–2014. Moreover, observations of individually marked birds show that some of those showing breeding plumage are mature adults, at least 3–7 years old. Conservation actions are required to manage Punta Rasa for the small but important numbers of Red Knots that occur there. Further research is needed to determine why some mature adults do not go to their Arctic breeding grounds and thereby fail to contribute to reproduction.
Fil: Martínez Curci, Natalia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Bremer, Esteban. Fundación Vida Silvestre Argentina; Argentina
Fil: Azpiroz, Adrián B.. Instituto de Investigaciones Biológicas "Clemente Estable"; Uruguay
Fil: Battaglia, Gabriel E.. Municipalidad del partido de La Costa; Argentina
Fil: Salerno, Javier C.. Municipalidad del partido de La Costa; Argentina
Fil: Isacch, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: González, Patricia M.. Fundación Inalafquen; Argentina
Fil: Castresana, Gabriel J.. Reserva Natural Bahía Samborombón; Argentina
Fil: Rojas, Pablo. Reserva Natural Bahía Samborombón; Argentina
description From 1985 to 2014, we monitored numbers of Red Knots Calidris canutus of the subspecies rufa occurring at Punta Rasa, Samborombón Bay, Buenos Aires province, Argentina during northward migration (March to April), and in the austral winter (mid-May to mid-August), when some knots, mainly immatures, remain in South America during the breeding season. Numbers occurring during northward migration declined over the monitoring period from a peak of 3,640 in 1987 to 168 in 2014. This is consistent with the concurrent decline of the main Tierra del Fuego wintering population (though the percentage of the Tierra del Fuego population stopping at Punta Rasa also declined from 5.4% to 1.3%). Numbers occurring at Punta Rasa during the austral winter have also declined, but not to the same extent and for the past decade more have been counted during the austral winter than during northward migration. Among those seen at Punta Rasa during the Arctic breeding season have been some with large amounts of rufous breeding plumage. The percentage of such birds has increased from 10–15% in 1987 to 19–54% during 2011–2014. Moreover, observations of individually marked birds show that some of those showing breeding plumage are mature adults, at least 3–7 years old. Conservation actions are required to manage Punta Rasa for the small but important numbers of Red Knots that occur there. Further research is needed to determine why some mature adults do not go to their Arctic breeding grounds and thereby fail to contribute to reproduction.
publishDate 2015
dc.date.none.fl_str_mv 2015-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/60216
Martínez Curci, Natalia Soledad; Bremer, Esteban; Azpiroz, Adrián B.; Battaglia, Gabriel E.; Salerno, Javier C.; et al.; Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014); International Wader Study Group; Wader Study; 122; 3; 12-2015; 236-242
2058-8410
CONICET Digital
CONICET
url http://hdl.handle.net/11336/60216
identifier_str_mv Martínez Curci, Natalia Soledad; Bremer, Esteban; Azpiroz, Adrián B.; Battaglia, Gabriel E.; Salerno, Javier C.; et al.; Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014); International Wader Study Group; Wader Study; 122; 3; 12-2015; 236-242
2058-8410
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.18194/ws.00018
info:eu-repo/semantics/altIdentifier/url/http://www.waderstudygroup.org/article/7301/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv International Wader Study Group
publisher.none.fl_str_mv International Wader Study Group
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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