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	Provedor de dados Zoologia (2) AgEcon (1) Autor Cremer,Marta J. (2) Simões-Lopes,Paulo C. (2) Poe, Gregory L. (1) Rondeau, Daniel (1) Schulze, William D. (1) Palavra-chave Group size (3) Behavior (1) C92 (1) Concentration area (1) Distance sampling (1) Distribution (1) Experiments (1) H41 (1) Information (1) Provision point (1) Public goods (1) Resource /Energy Economics and Policy (1) South America (1) Voluntary contributions (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Working or Discussion Paper (1) Ano 2008 (1) 2005 (1) 1997 (1) País Brazil (2) United States (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última VOLUNTARY REVELATION OF THE DEMAND FOR PUBLIC GOODS USING A PROVISION POINT MECHANISM AgEcon Rondeau, Daniel; Schulze, William D.; Poe, Gregory L.. Revised July 1998 Tipo: Working or Discussion Paper Palavras-chave: Public goods; Voluntary contributions; Provision point; Experiments; Information; Group size; Resource /Energy Economics and Policy; H41; C92. Ano: 1997 URL: http://purl.umn.edu/7265 The occurrence of Pontoporia blainvillei (Gervais & d'Orbigny) (Cetacea, Pontoporiidae) in an estuarine area in southern Brazil Zoologia Cremer,Marta J.; Simões-Lopes,Paulo C.. The toninha, or franciscana, Pontoporia blainvillei (Gervais & D'Orbigny, 1844), is an endemic species of cetacean of the southwestern Atlantic Ocean. There is little information on the occurrence of this species in its natural environment due to the great difficulty in sighting it. Systematized and non-systematized observations of franciscanas were made from December 1996 through November 2001 at Babitonga Bay, on the northern coast of Santa Catarina State, southern Brazil. The observations were made from small motorboats. A total of 79 observations were made, totaling 561 individuals. Up to 59.5% of the groups consisted of over four individuals and the average group size was seven. Calves were present in 30.4% of the observations. The species was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Behavior; Group size; Distribution; South America. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300032 Distribution, abundance and density estimates of franciscanas, Pontoporia blainvillei (Cetacea: Pontoporiidae), in Babitonga bay, southern Brazil Zoologia Cremer,Marta J.; Simões-Lopes,Paulo C.. Pontoporia blainvillei (Gervais & d'Orbigny, 1844) is threatened throughout its distribution. The species can be found year-round in the Babitonga bay estuary (26º 02'-26º 28'S and 48º28'-48º50'W), in the north coast of the state of Santa Catarina, Brazil. Boat surveys were conducted in order to evaluate its abundance and density between 2000 and 2003. Sampling was random and stratified, with 46 transects in five sub-areas, comprising a total area of 160 km². Data collection was conducted following the linear transect method with distance sampling. A total of 1174.7 km was scanned and 38 groups were observed. Franciscanas were not uniformly distributed in Babitonga bay. Group size ranged from one to 13 animals (mean ± SD = 5.02 ± 3.62). Model 1... Tipo: Info:eu-repo/semantics/article Palavras-chave: Concentration area; Distance sampling; Group size. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000300003 Registros recuperados: 3 Primeira ... 1 ... Última

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