Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica

Autores
Silvestro, Anahí Mariel; Casaux, Ricardo Jorge; Juares, Mariana Alejandra; Santos, Maria Mercedes; Perchivale, Pablo José; Hidalgo, Keila; Nigro, Rocio; Sandler, Rosana Veronica; Momo, Fernando Roberto
Año de publicación
2022
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Several studies reported decreases in populations of Adélie penguins in the north and west of the Antarctic Peninsula. Thus, from 1994 to 2019 we studied the population trend of Adélie penguins at Hope/Esperanza Bay. For such propose, following the CCAMLR-CEMP Methods_A.6-procedure_A-B, we estimated the numbers of breeding pairs, the clutch size, the hatching success, and the survival of chicks to crèche (breeding success). The survival of crèched chicks to adults, and adults? annual survival were obtained from the literature. We constructed a matrix population model to estimate the eigenvalues (λ) as a measure of grow rate of the population. The logarithm of λ1 (dominant eigenvalue) is equivalent to the per capita grow rate (r), so the population grows if λ1 is higher than one, remains stable if is one, and decrease if lower than one. Every two years, using a temporal series of six years, we estimated λ1 for each period; then we compute an average λ1. Survivorships were: eggs to hatching=0.77; guard chicks to fledged chicks=0.87; fledged chicks to two years age=0.26; adults per year=0.89. The estimated fecundity was 1.9 eggs/female, and due the ratio female/male reported is 1:1, the estimation of net reproductive rate (R0) was 0.95. The average value of λ1 was 1.07. Results suggest that during the study period, the colony remained stable. Given that populations are complex systems, to advance in the knowledge of the dynamic of this population it is important to identify which parameters have the higher sensitivity (stronger influence on λ1).
Fil: Silvestro, Anahí Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
Fil: Casaux, Ricardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
Fil: Juares, Mariana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Santos, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Perchivale, Pablo José. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Hidalgo, Keila. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Nigro, Rocio. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Sandler, Rosana Veronica. Universidad Nacional de Luján. Instituto de Ecología y Desarrollo Sustentable. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ecología y Desarrollo Sustentable; Argentina
Fil: Momo, Fernando Roberto. Universidad Nacional de Luján. Instituto de Ecología y Desarrollo Sustentable. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ecología y Desarrollo Sustentable; Argentina. Universidad Nacional de General Sarmiento. Instituto de Ciencias. Area de Biologia y Bioinformatica.; Argentina
10th SCAR Open Science Conference: Antarctica in a Changing World
Vasco da Gama
India
The National Centre for Polar and Ocean Research
Scientific Committee on Antarctic Research
Materia
Population Dynamics
Pygoscelis adeliae
Antarctic Peninsula
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:11336/267177
Acceder
id CONICETDig_e7e985ac077c8a9a0590d2e1920a8121
oai_identifier_str oai:ri.conicet.gov.ar:11336/267177
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Population trend of Adélie penguins breeding in Hope/Esperanza Bay, AntarcticaSilvestro, Anahí MarielCasaux, Ricardo JorgeJuares, Mariana AlejandraSantos, Maria MercedesPerchivale, Pablo JoséHidalgo, KeilaNigro, RocioSandler, Rosana VeronicaMomo, Fernando RobertoPopulation DynamicsPygoscelis adeliaeAntarctic Peninsulahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Several studies reported decreases in populations of Adélie penguins in the north and west of the Antarctic Peninsula. Thus, from 1994 to 2019 we studied the population trend of Adélie penguins at Hope/Esperanza Bay. For such propose, following the CCAMLR-CEMP Methods_A.6-procedure_A-B, we estimated the numbers of breeding pairs, the clutch size, the hatching success, and the survival of chicks to crèche (breeding success). The survival of crèched chicks to adults, and adults? annual survival were obtained from the literature. We constructed a matrix population model to estimate the eigenvalues (λ) as a measure of grow rate of the population. The logarithm of λ1 (dominant eigenvalue) is equivalent to the per capita grow rate (r), so the population grows if λ1 is higher than one, remains stable if is one, and decrease if lower than one. Every two years, using a temporal series of six years, we estimated λ1 for each period; then we compute an average λ1. Survivorships were: eggs to hatching=0.77; guard chicks to fledged chicks=0.87; fledged chicks to two years age=0.26; adults per year=0.89. The estimated fecundity was 1.9 eggs/female, and due the ratio female/male reported is 1:1, the estimation of net reproductive rate (R0) was 0.95. The average value of λ1 was 1.07. Results suggest that during the study period, the colony remained stable. Given that populations are complex systems, to advance in the knowledge of the dynamic of this population it is important to identify which parameters have the higher sensitivity (stronger influence on λ1).Fil: Silvestro, Anahí Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; ArgentinaFil: Casaux, Ricardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; ArgentinaFil: Juares, Mariana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Santos, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Perchivale, Pablo José. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Hidalgo, Keila. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Nigro, Rocio. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Sandler, Rosana Veronica. Universidad Nacional de Luján. Instituto de Ecología y Desarrollo Sustentable. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ecología y Desarrollo Sustentable; ArgentinaFil: Momo, Fernando Roberto. Universidad Nacional de Luján. Instituto de Ecología y Desarrollo Sustentable. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ecología y Desarrollo Sustentable; Argentina. Universidad Nacional de General Sarmiento. Instituto de Ciencias. Area de Biologia y Bioinformatica.; Argentina10th SCAR Open Science Conference: Antarctica in a Changing WorldVasco da GamaIndiaThe National Centre for Polar and Ocean ResearchScientific Committee on Antarctic ResearchScientific Committee on Antarctic Research2022info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectConferenciaBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/267177Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica; 10th SCAR Open Science Conference: Antarctica in a Changing World; Vasco da Gama; India; 2022; 383-383978-0-948277-64-1CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://scar2022.org/Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:43:25Zoai:ri.conicet.gov.ar:11336/267177instacron: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:34982025-09-03 09:43:25.318CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica
title Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica
spellingShingle Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica
Silvestro, Anahí Mariel
Population Dynamics
Pygoscelis adeliae
Antarctic Peninsula
title_short Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica
title_full Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica
title_fullStr Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica
title_full_unstemmed Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica
title_sort Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica
dc.creator.none.fl_str_mv Silvestro, Anahí Mariel
Casaux, Ricardo Jorge
Juares, Mariana Alejandra
Santos, Maria Mercedes
Perchivale, Pablo José
Hidalgo, Keila
Nigro, Rocio
Sandler, Rosana Veronica
Momo, Fernando Roberto
author Silvestro, Anahí Mariel
author_facet Silvestro, Anahí Mariel
Casaux, Ricardo Jorge
Juares, Mariana Alejandra
Santos, Maria Mercedes
Perchivale, Pablo José
Hidalgo, Keila
Nigro, Rocio
Sandler, Rosana Veronica
Momo, Fernando Roberto
author_role author
author2 Casaux, Ricardo Jorge
Juares, Mariana Alejandra
Santos, Maria Mercedes
Perchivale, Pablo José
Hidalgo, Keila
Nigro, Rocio
Sandler, Rosana Veronica
Momo, Fernando Roberto
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Population Dynamics
Pygoscelis adeliae
Antarctic Peninsula
topic Population Dynamics
Pygoscelis adeliae
Antarctic Peninsula
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Several studies reported decreases in populations of Adélie penguins in the north and west of the Antarctic Peninsula. Thus, from 1994 to 2019 we studied the population trend of Adélie penguins at Hope/Esperanza Bay. For such propose, following the CCAMLR-CEMP Methods_A.6-procedure_A-B, we estimated the numbers of breeding pairs, the clutch size, the hatching success, and the survival of chicks to crèche (breeding success). The survival of crèched chicks to adults, and adults? annual survival were obtained from the literature. We constructed a matrix population model to estimate the eigenvalues (λ) as a measure of grow rate of the population. The logarithm of λ1 (dominant eigenvalue) is equivalent to the per capita grow rate (r), so the population grows if λ1 is higher than one, remains stable if is one, and decrease if lower than one. Every two years, using a temporal series of six years, we estimated λ1 for each period; then we compute an average λ1. Survivorships were: eggs to hatching=0.77; guard chicks to fledged chicks=0.87; fledged chicks to two years age=0.26; adults per year=0.89. The estimated fecundity was 1.9 eggs/female, and due the ratio female/male reported is 1:1, the estimation of net reproductive rate (R0) was 0.95. The average value of λ1 was 1.07. Results suggest that during the study period, the colony remained stable. Given that populations are complex systems, to advance in the knowledge of the dynamic of this population it is important to identify which parameters have the higher sensitivity (stronger influence on λ1).
Fil: Silvestro, Anahí Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
Fil: Casaux, Ricardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
Fil: Juares, Mariana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Santos, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Perchivale, Pablo José. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Hidalgo, Keila. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Nigro, Rocio. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Sandler, Rosana Veronica. Universidad Nacional de Luján. Instituto de Ecología y Desarrollo Sustentable. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ecología y Desarrollo Sustentable; Argentina
Fil: Momo, Fernando Roberto. Universidad Nacional de Luján. Instituto de Ecología y Desarrollo Sustentable. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ecología y Desarrollo Sustentable; Argentina. Universidad Nacional de General Sarmiento. Instituto de Ciencias. Area de Biologia y Bioinformatica.; Argentina
10th SCAR Open Science Conference: Antarctica in a Changing World
Vasco da Gama
India
The National Centre for Polar and Ocean Research
Scientific Committee on Antarctic Research
description Several studies reported decreases in populations of Adélie penguins in the north and west of the Antarctic Peninsula. Thus, from 1994 to 2019 we studied the population trend of Adélie penguins at Hope/Esperanza Bay. For such propose, following the CCAMLR-CEMP Methods_A.6-procedure_A-B, we estimated the numbers of breeding pairs, the clutch size, the hatching success, and the survival of chicks to crèche (breeding success). The survival of crèched chicks to adults, and adults? annual survival were obtained from the literature. We constructed a matrix population model to estimate the eigenvalues (λ) as a measure of grow rate of the population. The logarithm of λ1 (dominant eigenvalue) is equivalent to the per capita grow rate (r), so the population grows if λ1 is higher than one, remains stable if is one, and decrease if lower than one. Every two years, using a temporal series of six years, we estimated λ1 for each period; then we compute an average λ1. Survivorships were: eggs to hatching=0.77; guard chicks to fledged chicks=0.87; fledged chicks to two years age=0.26; adults per year=0.89. The estimated fecundity was 1.9 eggs/female, and due the ratio female/male reported is 1:1, the estimation of net reproductive rate (R0) was 0.95. The average value of λ1 was 1.07. Results suggest that during the study period, the colony remained stable. Given that populations are complex systems, to advance in the knowledge of the dynamic of this population it is important to identify which parameters have the higher sensitivity (stronger influence on λ1).
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Conferencia
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/267177
Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica; 10th SCAR Open Science Conference: Antarctica in a Changing World; Vasco da Gama; India; 2022; 383-383
978-0-948277-64-1
CONICET Digital
CONICET
url http://hdl.handle.net/11336/267177
identifier_str_mv Population trend of Adélie penguins breeding in Hope/Esperanza Bay, Antarctica; 10th SCAR Open Science Conference: Antarctica in a Changing World; Vasco da Gama; India; 2022; 383-383
978-0-948277-64-1
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://scar2022.org/
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
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Scientific Committee on Antarctic Research
publisher.none.fl_str_mv Scientific Committee on Antarctic Research
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
_version_ 1842268600608489472
score 13.13397

Publicaciones similares