Artigo

The use of hydroelectric lakes by giant otters Pteronura brasiliensis: Balbina lake in central Amazonia, Brazil

Data on the occurrence and habitat use of giant otters Pteronura brasiliensis in the 4,437 km2 of Balbina hydroelectric lake in central Amazonia, Brazil, were collected from September 2001 to December 2005. Twenty-nine groups of giant otters were recorded in an area corresponding to 10% of the total...

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Autor principal: Weber Rosas, Fernando Cesar
Outros Autores: Mattos, Gália Ely de, Cabral, M. M. M.
Grau: Artigo
Idioma: English
Publicado em: Oryx 2020
Assuntos:
Activity Pattern
Habitat Use
Lake Ecosystem
Mustelid
Reservoir
Species Conservations
Species Occurrence
Amazonas
Amazonia
Balbina Reservoir
Brasil
South America
Carnivora
Pteronura Brasiliensis
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/16345
id oai:repositorio:1-16345
recordtype dspace
spelling oai:repositorio:1-16345 The use of hydroelectric lakes by giant otters Pteronura brasiliensis: Balbina lake in central Amazonia, Brazil Weber Rosas, Fernando Cesar Mattos, Gália Ely de Cabral, M. M. M. Activity Pattern Habitat Use Lake Ecosystem Mustelid Reservoir Species Conservations Species Occurrence Amazonas Amazonia Balbina Reservoir Brasil South America Carnivora Pteronura Brasiliensis Data on the occurrence and habitat use of giant otters Pteronura brasiliensis in the 4,437 km2 of Balbina hydroelectric lake in central Amazonia, Brazil, were collected from September 2001 to December 2005. Twenty-nine groups of giant otters were recorded in an area corresponding to 10% of the total reservoir. Despite the fact that it is a hydroelectric lake, the water level can vary annually by up to 3.5 m with the Amazonian seasonal flood pulse. A total of 210 dens, communal latrines and campsites of giant otters were located. An average of 37% of the dens observed were classified as in use, and the species was recorded in the lake throughout the year. Giant otters started their daily activities between 05.23 and 08.05. The average height of den openings was 28.77 ± SD 10.00 cm, with an average width of 56.11 ± SD 19.17 cm. Births in Balbina occur mainly during the period of high and receding water level, as reported for giant otters in other Amazonian areas. There are at least two conditions that enable the species to inhabit hydroelectric reservoirs: (1) presence of the species in the area before dam construction and (2) absence or low numbers of human communities around the reservoir. The potential use of hydroelectric lakes for the conservation of the giant otter in the Amazon is discussed. © 2007 Fauna and Flora International. 2020-06-03T21:27:31Z 2020-06-03T21:27:31Z 2007 Artigo https://repositorio.inpa.gov.br/handle/1/16345 10.1017/S0030605307005121 en Volume 41, Número 4, Pags. 520-524 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Oryx
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Activity Pattern
Habitat Use
Lake Ecosystem
Mustelid
Reservoir
Species Conservations
Species Occurrence
Amazonas
Amazonia
Balbina Reservoir
Brasil
South America
Carnivora
Pteronura Brasiliensis
spellingShingle Activity Pattern
Habitat Use
Lake Ecosystem
Mustelid
Reservoir
Species Conservations
Species Occurrence
Amazonas
Amazonia
Balbina Reservoir
Brasil
South America
Carnivora
Pteronura Brasiliensis
Weber Rosas, Fernando Cesar
The use of hydroelectric lakes by giant otters Pteronura brasiliensis: Balbina lake in central Amazonia, Brazil
topic_facet Activity Pattern
Habitat Use
Lake Ecosystem
Mustelid
Reservoir
Species Conservations
Species Occurrence
Amazonas
Amazonia
Balbina Reservoir
Brasil
South America
Carnivora
Pteronura Brasiliensis
description Data on the occurrence and habitat use of giant otters Pteronura brasiliensis in the 4,437 km2 of Balbina hydroelectric lake in central Amazonia, Brazil, were collected from September 2001 to December 2005. Twenty-nine groups of giant otters were recorded in an area corresponding to 10% of the total reservoir. Despite the fact that it is a hydroelectric lake, the water level can vary annually by up to 3.5 m with the Amazonian seasonal flood pulse. A total of 210 dens, communal latrines and campsites of giant otters were located. An average of 37% of the dens observed were classified as in use, and the species was recorded in the lake throughout the year. Giant otters started their daily activities between 05.23 and 08.05. The average height of den openings was 28.77 ± SD 10.00 cm, with an average width of 56.11 ± SD 19.17 cm. Births in Balbina occur mainly during the period of high and receding water level, as reported for giant otters in other Amazonian areas. There are at least two conditions that enable the species to inhabit hydroelectric reservoirs: (1) presence of the species in the area before dam construction and (2) absence or low numbers of human communities around the reservoir. The potential use of hydroelectric lakes for the conservation of the giant otter in the Amazon is discussed. © 2007 Fauna and Flora International.
format Artigo
author Weber Rosas, Fernando Cesar
author2 Mattos, Gália Ely de
Cabral, M. M. M.
author2Str Mattos, Gália Ely de
Cabral, M. M. M.
title The use of hydroelectric lakes by giant otters Pteronura brasiliensis: Balbina lake in central Amazonia, Brazil
title_short The use of hydroelectric lakes by giant otters Pteronura brasiliensis: Balbina lake in central Amazonia, Brazil
title_full The use of hydroelectric lakes by giant otters Pteronura brasiliensis: Balbina lake in central Amazonia, Brazil
title_fullStr The use of hydroelectric lakes by giant otters Pteronura brasiliensis: Balbina lake in central Amazonia, Brazil
title_full_unstemmed The use of hydroelectric lakes by giant otters Pteronura brasiliensis: Balbina lake in central Amazonia, Brazil
title_sort use of hydroelectric lakes by giant otters pteronura brasiliensis: balbina lake in central amazonia, brazil
publisher Oryx
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/16345
_version_ 1787141923801137152
score 11.755432

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