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dc.contributor.author
Martínez Curci, Natalia Soledad
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dc.contributor.author
Bremer, Esteban
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Azpiroz, Adrián B.
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Battaglia, Gabriel E.
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Salerno, Javier C.
dc.contributor.author
Isacch, Juan Pablo
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dc.contributor.author
González, Patricia M.
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Castresana, Gabriel J.
dc.contributor.author
Rojas, Pablo
dc.date.available
2018-09-19T15:44:40Z
dc.date.issued
2015-12
dc.identifier.citation
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
dc.identifier.issn
2058-8410
dc.identifier.uri
http://hdl.handle.net/11336/60216
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
International Wader Study Group
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Calidris Canutus Rufa
dc.subject
Over-Summering
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Punta Rasa
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Red Knot
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South America
dc.subject.classification
Otras Ciencias Biológicas
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Annual occurrence of Red Knot Calidris canutus rufa at Punta Rasa, Samborombón Bay, Argentina, over a 30-year period (1985–2014)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-30T15:45:37Z
dc.journal.volume
122
dc.journal.number
3
dc.journal.pagination
236-242
dc.journal.pais
Reino Unido
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dc.description.fil
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
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Fil: Bremer, Esteban. Fundación Vida Silvestre Argentina; Argentina
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Fil: Azpiroz, Adrián B.. Instituto de Investigaciones Biológicas "Clemente Estable"; Uruguay
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Fil: Battaglia, Gabriel E.. Municipalidad del partido de La Costa; Argentina
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Fil: Salerno, Javier C.. Municipalidad del partido de La Costa; Argentina
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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
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Fil: González, Patricia M.. Fundación Inalafquen; Argentina
dc.description.fil
Fil: Castresana, Gabriel J.. Reserva Natural Bahía Samborombón; Argentina
dc.description.fil
Fil: Rojas, Pablo. Reserva Natural Bahía Samborombón; Argentina
dc.journal.title
Wader Study
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.18194/ws.00018
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.waderstudygroup.org/article/7301/
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