Spatio-temporal variation in mortality rates of White-chinned Petrels Procellaria aequinoctialis interacting with longliners in the south-west Atlantic

The White-chinned Petrel Procellaria aequinoctialis is the second most commonly captured species by Argentinean longliners. The severe declines that this species has experienced in some of its populations (e.g. South Georgia Islands) have been principally attributed to incidental mortality associate...

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Detalles Bibliográficos
Publicado: 2007
Materias:
bird
capture method
mortality
population size
spatiotemporal analysis
Atlantic Ocean
Atlantic Ocean (Southwest)
Patagonian Shelf
Procellaria aequinoctialis
Procellariidae
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09592709_v17_n4_p359_Laich
http://hdl.handle.net/20.500.12110/paper_09592709_v17_n4_p359_Laich
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_09592709_v17_n4_p359_Laich
record_format dspace
spelling paper:paper_09592709_v17_n4_p359_Laich2023-06-08T15:56:44Z Spatio-temporal variation in mortality rates of White-chinned Petrels Procellaria aequinoctialis interacting with longliners in the south-west Atlantic bird capture method mortality population size spatiotemporal analysis Atlantic Ocean Atlantic Ocean (Southwest) Patagonian Shelf Procellaria aequinoctialis Procellariidae The White-chinned Petrel Procellaria aequinoctialis is the second most commonly captured species by Argentinean longliners. The severe declines that this species has experienced in some of its populations (e.g. South Georgia Islands) have been principally attributed to incidental mortality associated with longliners. In this study we analyse the spatio-temporal variability in the mortality rates of White-chinned Petrels on the Patagonian Shelf and the effects that environmental and operational variability have on such mortality. The average capture rate (± 1 SD) for the period 1999-2003 was 0.014 ± 0.090 White-chinned Petrels for every 1,000 hooks deployed. Higher capture rates were observed when short longlines were deployed. Capture rates were not affected by the wind speed or by the time to the full moon. The distribution of the captures differed throughout the year. During autumn-winter most captures took place in the north of the Patagonian Shelf, whereas during spring-summer incidental captures occurred principally to the south between 45°S and 50°S. © 2007 BirdLife International. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09592709_v17_n4_p359_Laich http://hdl.handle.net/20.500.12110/paper_09592709_v17_n4_p359_Laich
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic bird
capture method
mortality
population size
spatiotemporal analysis
Atlantic Ocean
Atlantic Ocean (Southwest)
Patagonian Shelf
Procellaria aequinoctialis
Procellariidae
spellingShingle bird
capture method
mortality
population size
spatiotemporal analysis
Atlantic Ocean
Atlantic Ocean (Southwest)
Patagonian Shelf
Procellaria aequinoctialis
Procellariidae
Spatio-temporal variation in mortality rates of White-chinned Petrels Procellaria aequinoctialis interacting with longliners in the south-west Atlantic
topic_facet bird
capture method
mortality
population size
spatiotemporal analysis
Atlantic Ocean
Atlantic Ocean (Southwest)
Patagonian Shelf
Procellaria aequinoctialis
Procellariidae
description The White-chinned Petrel Procellaria aequinoctialis is the second most commonly captured species by Argentinean longliners. The severe declines that this species has experienced in some of its populations (e.g. South Georgia Islands) have been principally attributed to incidental mortality associated with longliners. In this study we analyse the spatio-temporal variability in the mortality rates of White-chinned Petrels on the Patagonian Shelf and the effects that environmental and operational variability have on such mortality. The average capture rate (± 1 SD) for the period 1999-2003 was 0.014 ± 0.090 White-chinned Petrels for every 1,000 hooks deployed. Higher capture rates were observed when short longlines were deployed. Capture rates were not affected by the wind speed or by the time to the full moon. The distribution of the captures differed throughout the year. During autumn-winter most captures took place in the north of the Patagonian Shelf, whereas during spring-summer incidental captures occurred principally to the south between 45°S and 50°S. © 2007 BirdLife International.
title Spatio-temporal variation in mortality rates of White-chinned Petrels Procellaria aequinoctialis interacting with longliners in the south-west Atlantic
title_short Spatio-temporal variation in mortality rates of White-chinned Petrels Procellaria aequinoctialis interacting with longliners in the south-west Atlantic
title_full Spatio-temporal variation in mortality rates of White-chinned Petrels Procellaria aequinoctialis interacting with longliners in the south-west Atlantic
title_fullStr Spatio-temporal variation in mortality rates of White-chinned Petrels Procellaria aequinoctialis interacting with longliners in the south-west Atlantic
title_full_unstemmed Spatio-temporal variation in mortality rates of White-chinned Petrels Procellaria aequinoctialis interacting with longliners in the south-west Atlantic
title_sort spatio-temporal variation in mortality rates of white-chinned petrels procellaria aequinoctialis interacting with longliners in the south-west atlantic
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09592709_v17_n4_p359_Laich
http://hdl.handle.net/20.500.12110/paper_09592709_v17_n4_p359_Laich
_version_ 1768545657009733632

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