Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program
In this work, we report long-term trends in the abundance and breeding performance of Adélie penguins (Pygoscelis adeliae) nesting in three Antarctic colonies (i.e., at Martin Point, South Orkneys Islands; Stranger Point/Cabo Funes, South Shetland Islands; and Esperanza/Hope Bay in the Antarctic Pen...
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ftconicet:oai:ri.conicet.gov.ar:11336/235062 2024-06-23T07:44:58+00:00 Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program Juares, Mariana Alejandra Silvestro, Anahí Mariel Alfonso, Brenda C. Santos, Maria Mercedes application/pdf http://hdl.handle.net/11336/235062 eng eng Advances in Polar Sciences info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.12429/j.advps.2023.0027 http://hdl.handle.net/11336/235062 Juares, Mariana Alejandra; Silvestro, Anahí Mariel; Alfonso, Brenda C.; Santos, Maria Mercedes; Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program; Advances in Polar Sciences; Advances in Polar Science; 35; 3-2024; 132-140 1674-9928 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ LONG-TERM MONITORING ADÉLIE PENGUIN BREEDING PAIRS CHICKS CRÈCHED BREEDING SUCCESS POPULATION TRENDS https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.12429/j.advps.2023.0027 2024-05-27T23:56:36Z In this work, we report long-term trends in the abundance and breeding performance of Adélie penguins (Pygoscelis adeliae) nesting in three Antarctic colonies (i.e., at Martin Point, South Orkneys Islands; Stranger Point/Cabo Funes, South Shetland Islands; and Esperanza/Hope Bay in the Antarctic Peninsula) from 1995/96 to 2022/23. Using yearly count data of breeding groups selected, we observed a decline in the number of breeding pairs and chicks in crèche at all colonies studied. However, the magnitude of change was higher at Stranger Point than that in the remaining colonies. Moreover, the index of breeding success, which was calculated as the ratio of chicks in crèche to breeding pairs, exhibited no apparent trend throughout the study period. However, it displayed greater variability at Martin Point compared to the other two colonies under investigation. Although the number of chicks in crèche of Adélie penguins showed a declining pattern, the average breeding performance was similar to that reported in gentoo penguin colonies, specifically, those undergoing a population increase (even in sympatric colonies facing similar local conditions). Consequently, it is plausible to assume a reduction of the over-winter survival as a likely cause of the declining trend observed, at least in the Stranger Point and Esperanza colonies. However, we cannot rule out local effects during the breeding season affecting the Adélie population of Martin Point. Fil: Juares, Mariana Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. 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: Silvestro, Anahí Mariel. 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 ... Article in Journal/Newspaper Advances in Polar Science Antarc* Antarctic Antarctic Peninsula Dirección Nacional del Antártico Gentoo penguin Instituto Antártico Argentino Polar Science Polar Science Pygoscelis adeliae South Shetland Islands CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula Argentina Argentine Argentino cabo Funes ENVELOPE(-58.617,-58.617,-62.250,-62.250) Esperanza ENVELOPE(-56.983,-56.983,-63.400,-63.400) Funes ENVELOPE(-58.617,-58.617,-62.250,-62.250) Hope Bay ENVELOPE(-57.038,-57.038,-63.403,-63.403) Martin Point ENVELOPE(-44.683,-44.683,-60.767,-60.767) South Shetland Islands Stranger Point ENVELOPE(-58.618,-58.618,-62.262,-62.262) The Antarctic |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
LONG-TERM MONITORING ADÉLIE PENGUIN BREEDING PAIRS CHICKS CRÈCHED BREEDING SUCCESS POPULATION TRENDS https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
LONG-TERM MONITORING ADÉLIE PENGUIN BREEDING PAIRS CHICKS CRÈCHED BREEDING SUCCESS POPULATION TRENDS https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Juares, Mariana Alejandra Silvestro, Anahí Mariel Alfonso, Brenda C. Santos, Maria Mercedes Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program |
topic_facet |
LONG-TERM MONITORING ADÉLIE PENGUIN BREEDING PAIRS CHICKS CRÈCHED BREEDING SUCCESS POPULATION TRENDS https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
In this work, we report long-term trends in the abundance and breeding performance of Adélie penguins (Pygoscelis adeliae) nesting in three Antarctic colonies (i.e., at Martin Point, South Orkneys Islands; Stranger Point/Cabo Funes, South Shetland Islands; and Esperanza/Hope Bay in the Antarctic Peninsula) from 1995/96 to 2022/23. Using yearly count data of breeding groups selected, we observed a decline in the number of breeding pairs and chicks in crèche at all colonies studied. However, the magnitude of change was higher at Stranger Point than that in the remaining colonies. Moreover, the index of breeding success, which was calculated as the ratio of chicks in crèche to breeding pairs, exhibited no apparent trend throughout the study period. However, it displayed greater variability at Martin Point compared to the other two colonies under investigation. Although the number of chicks in crèche of Adélie penguins showed a declining pattern, the average breeding performance was similar to that reported in gentoo penguin colonies, specifically, those undergoing a population increase (even in sympatric colonies facing similar local conditions). Consequently, it is plausible to assume a reduction of the over-winter survival as a likely cause of the declining trend observed, at least in the Stranger Point and Esperanza colonies. However, we cannot rule out local effects during the breeding season affecting the Adélie population of Martin Point. Fil: Juares, Mariana Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. 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: Silvestro, Anahí Mariel. 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 ... |
format |
Article in Journal/Newspaper |
author |
Juares, Mariana Alejandra Silvestro, Anahí Mariel Alfonso, Brenda C. Santos, Maria Mercedes |
author_facet |
Juares, Mariana Alejandra Silvestro, Anahí Mariel Alfonso, Brenda C. Santos, Maria Mercedes |
author_sort |
Juares, Mariana Alejandra |
title |
Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program |
title_short |
Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program |
title_full |
Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program |
title_fullStr |
Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program |
title_full_unstemmed |
Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program |
title_sort |
long-term trends in the abundance and breeding performance in adélie penguins: the argentine ecosystem monitoring program |
publisher |
Advances in Polar Sciences |
url |
http://hdl.handle.net/11336/235062 |
long_lat |
ENVELOPE(-58.617,-58.617,-62.250,-62.250) ENVELOPE(-56.983,-56.983,-63.400,-63.400) ENVELOPE(-58.617,-58.617,-62.250,-62.250) ENVELOPE(-57.038,-57.038,-63.403,-63.403) ENVELOPE(-44.683,-44.683,-60.767,-60.767) ENVELOPE(-58.618,-58.618,-62.262,-62.262) |
geographic |
Antarctic Antarctic Peninsula Argentina Argentine Argentino cabo Funes Esperanza Funes Hope Bay Martin Point South Shetland Islands Stranger Point The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Argentina Argentine Argentino cabo Funes Esperanza Funes Hope Bay Martin Point South Shetland Islands Stranger Point The Antarctic |
genre |
Advances in Polar Science Antarc* Antarctic Antarctic Peninsula Dirección Nacional del Antártico Gentoo penguin Instituto Antártico Argentino Polar Science Polar Science Pygoscelis adeliae South Shetland Islands |
genre_facet |
Advances in Polar Science Antarc* Antarctic Antarctic Peninsula Dirección Nacional del Antártico Gentoo penguin Instituto Antártico Argentino Polar Science Polar Science Pygoscelis adeliae South Shetland Islands |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.12429/j.advps.2023.0027 http://hdl.handle.net/11336/235062 Juares, Mariana Alejandra; Silvestro, Anahí Mariel; Alfonso, Brenda C.; Santos, Maria Mercedes; Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program; Advances in Polar Sciences; Advances in Polar Science; 35; 3-2024; 132-140 1674-9928 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.12429/j.advps.2023.0027 |
_version_ |
1802642633727672320 |