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	Provedor de dados Iheringia, Sér. Zool. (2) Autor Gianuca,Andros T. (2) Bastazini,Vinicius A. G. (1) Dias,Rafael A. (1) Gianuca,Dimas (1) Vooren,Carolus M. (1) Palavra-chave "Campos" grasslands (1) Canonical ordination (1) Climate change (1) Grassland management (1) Habitat use (1) Herons (1) Livestock ranching (1) Range expansion (1) Reproduction (1) Rio Grande do Sul (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2012 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Abundance, breeding and food of the Little Blue Heron Egretta caerulea (Aves, Ardeidae) in the Patos Lagoon estuary, a recently colonized area in southern Brazil Iheringia, Sér. Zool. Gianuca,Dimas; Gianuca,Andros T.; Vooren,Carolus M.. We document the expansion of the breeding distribution of the Little Blue Heron Egretta caerulea (Linnaeus, 1758) to 850 km beyond its previous southern limit in South America. In addition we present data on abundance, breeding biology and food of the species in the Patos Lagoon estuary, the area which the species recently colonized. The maximum abundance recorded in the breeding colony and in a nocturnal roosting site was 53 and 49 individuals respectively. Nesting occurred from September to March. Birds nested in a mixed breeding colony together with about 3,000 breeding pairs of seven other species of Pelecaniformes, in a swampy forest near the margin of the estuary. Five nests were between 1.5 and 4.3 m from the ground, on the shrub Daphnopsis racemosa... Tipo: Info:eu-repo/semantics/article Palavras-chave: Climate change; Herons; Reproduction; Rio Grande do Sul; Range expansion. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000100003 Bird-habitat associations in coastal rangelands of southern Brazil Iheringia, Sér. Zool. Dias,Rafael A.; Bastazini,Vinicius A. G.; Gianuca,Andros T.. Nearly all remnants of temperate grasslands in southeastern South America are used for livestock ranching and are subject to habitat degradation resulting from this activity. Exploring how habitat features affect the composition of grassland avifaunal communities is a first step to understand how current cattle-ranching management practices impact avian diversity. We used canonical ordination to test for relationships between five habitat variables and the composition of the bird community in coastal grasslands in southern Brazil. We sampled pastures with different heights, from overgrazed short-grass to tall herbaceous vegetation. We recorded 1,535 individuals and 27 species of birds. The first ordination axis indicated a strong contribution of mean... Tipo: Info:eu-repo/semantics/article Palavras-chave: Habitat use; Livestock ranching; Grassland management; Canonical ordination; "Campos" grasslands. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000200010 Registros recuperados: 2 Primeira ... 1 ... Última

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