Abundance estimation of Adélie penguins at the Esperanza/Hope Bay mega colony
The Adélie penguin (Pygoscelis adeliae) breeding population at Esperanza/Hope Bay, at the tip of the Antarctic Peninsula, is one of the largest Adélie penguin colonies in Antarctica. Nevertheless, the last known published feld count during the egg-laying period is from 1985/1986. We counted breeding...
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ftunivlaplata:oai:sedici.unlp.edu.ar:10915/146074 2023-05-15T13:47:14+02:00 Abundance estimation of Adélie penguins at the Esperanza/Hope Bay mega colony Santos, María Mercedes Hinke, Jefferson T. Coria, Néstor Rubén Fusaro, Bruno Silvestro, Anahí Mariel Juáres, Mariana Alejandra 2018-07-19 application/pdf 2337-2342 http://sedici.unlp.edu.ar/handle/10915/146074 en eng http://sedici.unlp.edu.ar/handle/10915/146074 issn:0722-4060 issn:1432-2056 http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) CC-BY-NC-SA Biología Ciencias Naturales Pygoscelis adeliae Breeding population size Population decline Antarctic Peninsula Articulo 2018 ftunivlaplata 2022-11-20T01:07:52Z The Adélie penguin (Pygoscelis adeliae) breeding population at Esperanza/Hope Bay, at the tip of the Antarctic Peninsula, is one of the largest Adélie penguin colonies in Antarctica. Nevertheless, the last known published feld count during the egg-laying period is from 1985/1986. We counted breeding pairs within the entire colony, consisting of 274 breeding groups, during the 2012/2013 breeding season for comparison with previously published ground and satellite-derived counts. We also counted breeding pairs in 26 breeding groups that have been monitored annually since 1995/1996. We estimated the current population size to be 104,139 (95th-percentile CI 70,126–138,151) breeding pairs for the whole colony. The counts indicate population declines of 15.9% over 27 years in the whole colony and 37.5% over 18 years in the annually monitored subset of breeding groups, respectively. The observed decrease matches recent trends reported in other Adélie penguin colonies throughout the western Antarctic Peninsula and southern Scotia Sea. This population assessment contributes to the current estimates of the total predator populations in the region, which is necessary information for the management of marine living resources. Facultad de Ciencias Naturales y Museo Centro de Estudios Parasitológicos y de Vectores Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Pygoscelis adeliae Scotia Sea Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) Antarctic Antarctic Peninsula Esperanza ENVELOPE(-56.983,-56.983,-63.400,-63.400) Hope Bay ENVELOPE(-57.038,-57.038,-63.403,-63.403) Scotia Sea The Antarctic |
institution |
Open Polar |
collection |
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) |
op_collection_id |
ftunivlaplata |
language |
English |
topic |
Biología Ciencias Naturales Pygoscelis adeliae Breeding population size Population decline Antarctic Peninsula |
spellingShingle |
Biología Ciencias Naturales Pygoscelis adeliae Breeding population size Population decline Antarctic Peninsula Santos, María Mercedes Hinke, Jefferson T. Coria, Néstor Rubén Fusaro, Bruno Silvestro, Anahí Mariel Juáres, Mariana Alejandra Abundance estimation of Adélie penguins at the Esperanza/Hope Bay mega colony |
topic_facet |
Biología Ciencias Naturales Pygoscelis adeliae Breeding population size Population decline Antarctic Peninsula |
description |
The Adélie penguin (Pygoscelis adeliae) breeding population at Esperanza/Hope Bay, at the tip of the Antarctic Peninsula, is one of the largest Adélie penguin colonies in Antarctica. Nevertheless, the last known published feld count during the egg-laying period is from 1985/1986. We counted breeding pairs within the entire colony, consisting of 274 breeding groups, during the 2012/2013 breeding season for comparison with previously published ground and satellite-derived counts. We also counted breeding pairs in 26 breeding groups that have been monitored annually since 1995/1996. We estimated the current population size to be 104,139 (95th-percentile CI 70,126–138,151) breeding pairs for the whole colony. The counts indicate population declines of 15.9% over 27 years in the whole colony and 37.5% over 18 years in the annually monitored subset of breeding groups, respectively. The observed decrease matches recent trends reported in other Adélie penguin colonies throughout the western Antarctic Peninsula and southern Scotia Sea. This population assessment contributes to the current estimates of the total predator populations in the region, which is necessary information for the management of marine living resources. Facultad de Ciencias Naturales y Museo Centro de Estudios Parasitológicos y de Vectores |
format |
Article in Journal/Newspaper |
author |
Santos, María Mercedes Hinke, Jefferson T. Coria, Néstor Rubén Fusaro, Bruno Silvestro, Anahí Mariel Juáres, Mariana Alejandra |
author_facet |
Santos, María Mercedes Hinke, Jefferson T. Coria, Néstor Rubén Fusaro, Bruno Silvestro, Anahí Mariel Juáres, Mariana Alejandra |
author_sort |
Santos, María Mercedes |
title |
Abundance estimation of Adélie penguins at the Esperanza/Hope Bay mega colony |
title_short |
Abundance estimation of Adélie penguins at the Esperanza/Hope Bay mega colony |
title_full |
Abundance estimation of Adélie penguins at the Esperanza/Hope Bay mega colony |
title_fullStr |
Abundance estimation of Adélie penguins at the Esperanza/Hope Bay mega colony |
title_full_unstemmed |
Abundance estimation of Adélie penguins at the Esperanza/Hope Bay mega colony |
title_sort |
abundance estimation of adélie penguins at the esperanza/hope bay mega colony |
publishDate |
2018 |
url |
http://sedici.unlp.edu.ar/handle/10915/146074 |
long_lat |
ENVELOPE(-56.983,-56.983,-63.400,-63.400) ENVELOPE(-57.038,-57.038,-63.403,-63.403) |
geographic |
Antarctic Antarctic Peninsula Esperanza Hope Bay Scotia Sea The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Esperanza Hope Bay Scotia Sea The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Pygoscelis adeliae Scotia Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Pygoscelis adeliae Scotia Sea |
op_relation |
http://sedici.unlp.edu.ar/handle/10915/146074 issn:0722-4060 issn:1432-2056 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
op_rightsnorm |
CC-BY-NC-SA |
_version_ |
1766246792186298368 |