Spatial ecology, phenological variability and moulting patterns of the Endangered Atlantic petrel Pterodroma incerta
Este artículo contiene 18 páginas, 4 tablas, 5 figuras. Insights into the year-round movements and behaviour of seabirds are essential to better understand their ecology and to evaluate possible threats at sea. The Atlantic petrel Pterodroma incerta is an Endangered gadfly petrel endemic to the Sout...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Inter Research
2019
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Online Access: | http://hdl.handle.net/10261/208898 |
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ftcsic:oai:digital.csic.es:10261/208898 2024-02-11T10:08:36+01:00 Spatial ecology, phenological variability and moulting patterns of the Endangered Atlantic petrel Pterodroma incerta Pastor Prieto, Marina Ramos, Raül Zajková, Zuzana Reyes-González, José M. Rivas, Manuel L. Ryan, Peter G. González-Solís, Jacob 2019 http://hdl.handle.net/10261/208898 en eng Inter Research https://doi.org/10.3354/esr00991 Sí Endangered Species Research 40 : 189-206 (2019) 1863-5407 http://hdl.handle.net/10261/208898 1613-4796 open Carry-over effects Patagonian Shelf Atlantic petrel Year-round movements At-sea behaviour artículo http://purl.org/coar/resource_type/c_6501 2019 ftcsic https://doi.org/10.3354/esr00991 2024-01-16T10:52:38Z Este artículo contiene 18 páginas, 4 tablas, 5 figuras. Insights into the year-round movements and behaviour of seabirds are essential to better understand their ecology and to evaluate possible threats at sea. The Atlantic petrel Pterodroma incerta is an Endangered gadfly petrel endemic to the South Atlantic Ocean, with virtually the entire population breeding on Gough Island (Tristan da Cunha archipelago). We describe adult phenology, habitat preferences and at-sea activity patterns for each phenological phase of the annual cycle and refine current knowledge about its distribution, by using light-level geolocators on 13 adults over 1−3 consecutive years. We also ascertained moulting pattern through stable isotope analysis (SIA) of nitrogen and carbon in feathers from 8 carcasses. On average, adults started their post-breeding migration on 25 December, taking 10 d to reach their non-breeding areas on the South American shelf slope. The pre-breeding migration started around 11 April and took 5 d. From phenological data, we found evidence of carry-over effects between successive breeding periods. The year-round distribution generally coincided with the potential distribution obtained from habitat modelling, except during the non-breeding and pre-laying exodus periods, when birds only used the western areas of the South Atlantic. Moulting occurred during the nonbreeding period, when birds spent more time on the water, and results from SIA helped us to distinguish feathers grown around Gough Island from those grown in the non-breeding area. Overall, our results bring important new insights into the spatial ecology of this Endangered seabird, which should help improve conservation strategies in the South Atlantic Ocean. The Ministerio de educación y Ciencia and Ministerio de Ciencia e Innovación from the Spanish Government (Projects CGL2006- 01315/BOS, CGL201342585-P, CGL2009-11278/BOS) financially supported this study. Logistical support and financial funding during field work was provided by the South African ... Article in Journal/Newspaper South Atlantic Ocean Digital.CSIC (Spanish National Research Council) Gough ENVELOPE(159.367,159.367,-81.633,-81.633) Tristan ENVELOPE(140.900,140.900,-66.735,-66.735) Endangered Species Research 40 189 206 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Carry-over effects Patagonian Shelf Atlantic petrel Year-round movements At-sea behaviour |
spellingShingle |
Carry-over effects Patagonian Shelf Atlantic petrel Year-round movements At-sea behaviour Pastor Prieto, Marina Ramos, Raül Zajková, Zuzana Reyes-González, José M. Rivas, Manuel L. Ryan, Peter G. González-Solís, Jacob Spatial ecology, phenological variability and moulting patterns of the Endangered Atlantic petrel Pterodroma incerta |
topic_facet |
Carry-over effects Patagonian Shelf Atlantic petrel Year-round movements At-sea behaviour |
description |
Este artículo contiene 18 páginas, 4 tablas, 5 figuras. Insights into the year-round movements and behaviour of seabirds are essential to better understand their ecology and to evaluate possible threats at sea. The Atlantic petrel Pterodroma incerta is an Endangered gadfly petrel endemic to the South Atlantic Ocean, with virtually the entire population breeding on Gough Island (Tristan da Cunha archipelago). We describe adult phenology, habitat preferences and at-sea activity patterns for each phenological phase of the annual cycle and refine current knowledge about its distribution, by using light-level geolocators on 13 adults over 1−3 consecutive years. We also ascertained moulting pattern through stable isotope analysis (SIA) of nitrogen and carbon in feathers from 8 carcasses. On average, adults started their post-breeding migration on 25 December, taking 10 d to reach their non-breeding areas on the South American shelf slope. The pre-breeding migration started around 11 April and took 5 d. From phenological data, we found evidence of carry-over effects between successive breeding periods. The year-round distribution generally coincided with the potential distribution obtained from habitat modelling, except during the non-breeding and pre-laying exodus periods, when birds only used the western areas of the South Atlantic. Moulting occurred during the nonbreeding period, when birds spent more time on the water, and results from SIA helped us to distinguish feathers grown around Gough Island from those grown in the non-breeding area. Overall, our results bring important new insights into the spatial ecology of this Endangered seabird, which should help improve conservation strategies in the South Atlantic Ocean. The Ministerio de educación y Ciencia and Ministerio de Ciencia e Innovación from the Spanish Government (Projects CGL2006- 01315/BOS, CGL201342585-P, CGL2009-11278/BOS) financially supported this study. Logistical support and financial funding during field work was provided by the South African ... |
format |
Article in Journal/Newspaper |
author |
Pastor Prieto, Marina Ramos, Raül Zajková, Zuzana Reyes-González, José M. Rivas, Manuel L. Ryan, Peter G. González-Solís, Jacob |
author_facet |
Pastor Prieto, Marina Ramos, Raül Zajková, Zuzana Reyes-González, José M. Rivas, Manuel L. Ryan, Peter G. González-Solís, Jacob |
author_sort |
Pastor Prieto, Marina |
title |
Spatial ecology, phenological variability and moulting patterns of the Endangered Atlantic petrel Pterodroma incerta |
title_short |
Spatial ecology, phenological variability and moulting patterns of the Endangered Atlantic petrel Pterodroma incerta |
title_full |
Spatial ecology, phenological variability and moulting patterns of the Endangered Atlantic petrel Pterodroma incerta |
title_fullStr |
Spatial ecology, phenological variability and moulting patterns of the Endangered Atlantic petrel Pterodroma incerta |
title_full_unstemmed |
Spatial ecology, phenological variability and moulting patterns of the Endangered Atlantic petrel Pterodroma incerta |
title_sort |
spatial ecology, phenological variability and moulting patterns of the endangered atlantic petrel pterodroma incerta |
publisher |
Inter Research |
publishDate |
2019 |
url |
http://hdl.handle.net/10261/208898 |
long_lat |
ENVELOPE(159.367,159.367,-81.633,-81.633) ENVELOPE(140.900,140.900,-66.735,-66.735) |
geographic |
Gough Tristan |
geographic_facet |
Gough Tristan |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
https://doi.org/10.3354/esr00991 Sí Endangered Species Research 40 : 189-206 (2019) 1863-5407 http://hdl.handle.net/10261/208898 1613-4796 |
op_rights |
open |
op_doi |
https://doi.org/10.3354/esr00991 |
container_title |
Endangered Species Research |
container_volume |
40 |
container_start_page |
189 |
op_container_end_page |
206 |
_version_ |
1790608038534578176 |