Seasonal abundance of the Neotropic Cormorant (Phalacrocorax brasilianus) at Lagoa dos Patos estuary, Southern Brazil

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Censuses of the Neotropic Cormorant (Phalacrocorax brasilianus) were carried out at a power tower near the mouth of Lagoa dos Patos estuary, southern Brazil, from November 2001 to October 2002. At this major roosting site, a total of 309 counts over 47 days of census were performed to estimate month...

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Autores principales: Barquete, Viviane, Vooren, Carolus Maria, Bugoni, Leandro
Lenguaje:Inglés
Publicado: 2008
Materias:
ABUNDANCIA
BIGUA
PHALACROCORAX BRASILIANUS
SITIO DE DESCANSO
VARIACION ESTACIONAL
ABUNDANCE
NEOTROPIC CORMORANT
ROOSTING SITE
SEASONAL VARIATION
Acceso en línea:https://hdl.handle.net/20.500.12110/hornero_v023_n01_p015
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:hornero_v023_n01_p015
record_format dspace
spelling todo:hornero_v023_n01_p0152023-10-03T13:49:06Z Seasonal abundance of the Neotropic Cormorant (Phalacrocorax brasilianus) at Lagoa dos Patos estuary, Southern Brazil Abundancia estacional del biguá (Phalacrocorax brasilianus) en el estuario de la Laguna Dos Patos, Sur de Brasil Barquete, Viviane Vooren, Carolus Maria Bugoni, Leandro ABUNDANCIA BIGUA PHALACROCORAX BRASILIANUS SITIO DE DESCANSO VARIACION ESTACIONAL ABUNDANCE NEOTROPIC CORMORANT PHALACROCORAX BRASILIANUS ROOSTING SITE SEASONAL VARIATION Censuses of the Neotropic Cormorant (Phalacrocorax brasilianus) were carried out at a power tower near the mouth of Lagoa dos Patos estuary, southern Brazil, from November 2001 to October 2002. At this major roosting site, a total of 309 counts over 47 days of census were performed to estimate monthly variation in the abundance of the Neotropic Cormorant. The highest abundance occurred in January (1390 birds), and the lowest in May (117 birds). The tower was a roosting site for cormorants at night, which arrived around 15:30 h onward, with numbers increasing near dusk. Birds preferentially used the lower levels of the tower (including the concrete base and levels 1 and 2) throughout the year and this preference could be partially due to strong winds in the area. Migrating cormorants arrived at the estuary in winter and spring, increasing throughout the summer and severely decreasing in autumn months, when they probably moved to inland breeding grounds. Se realizaron censos de Biguá (Phalacrocorax brasilianus) en una torre de transmisión de energíaeléctrica cerca de la barra de la laguna dos Patos, en el sur de Brasil, entre noviembre de 2001 y octubre de 2002. Se realizaron un total de 309 conteos en 47 días de censos para estimar la variación mensual en la abundancia del Biguá. La mayor abundancia se observó en enero (1390 aves) y la menor en mayo (117 aves). La torre fue un importante sitio de descanso nocturno al cual las aves llegaban alrededor de las 15:30 h, aumentando el número de aves cerca del atardecer. Las aves utilizaron preferentemente los niveles inferiores de la torre (la base de hormigón y los niveles 1 y 2) durante todo el año y esta preferencia podría estar relacionada con los fuertes vientos en el área. Los biguaes migrantes llegaron al estuario en invierno y primavera, aumentaron sus números durante el verano y mostraron una gran disminución en el otoño, cuando probablemente se muevan hacia áreas reproductivas en el interior. 2008-08 PDF Inglés info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar https://hdl.handle.net/20.500.12110/hornero_v023_n01_p015
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv Inglés
topic ABUNDANCIA
BIGUA
PHALACROCORAX BRASILIANUS
SITIO DE DESCANSO
VARIACION ESTACIONAL
ABUNDANCE
NEOTROPIC CORMORANT
PHALACROCORAX BRASILIANUS
ROOSTING SITE
SEASONAL VARIATION
spellingShingle ABUNDANCIA
BIGUA
PHALACROCORAX BRASILIANUS
SITIO DE DESCANSO
VARIACION ESTACIONAL
ABUNDANCE
NEOTROPIC CORMORANT
PHALACROCORAX BRASILIANUS
ROOSTING SITE
SEASONAL VARIATION
Barquete, Viviane
Vooren, Carolus Maria
Bugoni, Leandro
Seasonal abundance of the Neotropic Cormorant (Phalacrocorax brasilianus) at Lagoa dos Patos estuary, Southern Brazil
topic_facet ABUNDANCIA
BIGUA
PHALACROCORAX BRASILIANUS
SITIO DE DESCANSO
VARIACION ESTACIONAL
ABUNDANCE
NEOTROPIC CORMORANT
PHALACROCORAX BRASILIANUS
ROOSTING SITE
SEASONAL VARIATION
description Censuses of the Neotropic Cormorant (Phalacrocorax brasilianus) were carried out at a power tower near the mouth of Lagoa dos Patos estuary, southern Brazil, from November 2001 to October 2002. At this major roosting site, a total of 309 counts over 47 days of census were performed to estimate monthly variation in the abundance of the Neotropic Cormorant. The highest abundance occurred in January (1390 birds), and the lowest in May (117 birds). The tower was a roosting site for cormorants at night, which arrived around 15:30 h onward, with numbers increasing near dusk. Birds preferentially used the lower levels of the tower (including the concrete base and levels 1 and 2) throughout the year and this preference could be partially due to strong winds in the area. Migrating cormorants arrived at the estuary in winter and spring, increasing throughout the summer and severely decreasing in autumn months, when they probably moved to inland breeding grounds.
author Barquete, Viviane
Vooren, Carolus Maria
Bugoni, Leandro
author_facet Barquete, Viviane
Vooren, Carolus Maria
Bugoni, Leandro
author_sort Barquete, Viviane
title Seasonal abundance of the Neotropic Cormorant (Phalacrocorax brasilianus) at Lagoa dos Patos estuary, Southern Brazil
title_short Seasonal abundance of the Neotropic Cormorant (Phalacrocorax brasilianus) at Lagoa dos Patos estuary, Southern Brazil
title_full Seasonal abundance of the Neotropic Cormorant (Phalacrocorax brasilianus) at Lagoa dos Patos estuary, Southern Brazil
title_fullStr Seasonal abundance of the Neotropic Cormorant (Phalacrocorax brasilianus) at Lagoa dos Patos estuary, Southern Brazil
title_full_unstemmed Seasonal abundance of the Neotropic Cormorant (Phalacrocorax brasilianus) at Lagoa dos Patos estuary, Southern Brazil
title_sort seasonal abundance of the neotropic cormorant (phalacrocorax brasilianus) at lagoa dos patos estuary, southern brazil
publishDate 2008
url https://hdl.handle.net/20.500.12110/hornero_v023_n01_p015
work_keys_str_mv AT barqueteviviane seasonalabundanceoftheneotropiccormorantphalacrocoraxbrasilianusatlagoadospatosestuarysouthernbrazil
AT voorencarolusmaria seasonalabundanceoftheneotropiccormorantphalacrocoraxbrasilianusatlagoadospatosestuarysouthernbrazil
AT bugonileandro seasonalabundanceoftheneotropiccormorantphalacrocoraxbrasilianusatlagoadospatosestuarysouthernbrazil
AT barqueteviviane abundanciaestacionaldelbiguaphalacrocoraxbrasilianusenelestuariodelalagunadospatossurdebrasil
AT voorencarolusmaria abundanciaestacionaldelbiguaphalacrocoraxbrasilianusenelestuariodelalagunadospatossurdebrasil
AT bugonileandro abundanciaestacionaldelbiguaphalacrocoraxbrasilianusenelestuariodelalagunadospatossurdebrasil
_version_ 1782025863366180864

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