4 documents found, page 1 of 1
Changes in fishing dynamics in communities affected by large hydroelectric dams...
Pinto, Danielle Mendonça; Pinto, Vivaldo de Albuquerque; Sant’Anna, Igor Rechetnicow Alves; Arantes, Caroline Chaves; Doria, Carolina Rodrigues da CostaWe evaluated the changes in fishing dynamics and in social, economic, political-institutional and ecological aspects, in two communities of the reservoir Santo Antônio Hydroelectric: District Jaci Paraná and Vila Nova do Teotônio, Rondônia, Brazil. The fishing dynamics and the Development Index Fishermen of Middle Madeira (IDPM) were obtained and compared between the periods: 2007/2009 and 2017/2019. We observe...
Variações entre contagens de Arapaima gigas (Schinz) (Osteoglossomorpha, Osteog...
Arantes, Caroline Chaves; Castello, Leandro; Garcez, Danielle SequeiraCensusing of pirarucu (Arapaima gigas) is being increasingly used in conservation initiatives throughout the Amazon, and is done essentially by counting the individuals at the moment they come out of the water to breathe air. This ‘counting method’ was developed recently based on analyses of counts of pirarucu made by groups of knowledgeable and skillful fishers. But fishers vary with respect to their knowledge...
Fish species richness is associated with the availability of landscape componen...
Carvalho, Carlos Edwar Freitas de; Laurenson, Laurie J.B.; Yamamoto, K. C.; Forsberg, Bruce Rider; Petrere Jr., Miguel; Arantes, Caroline ChavesUnderstanding environmental biodiversity drivers in freshwater systems continues to be a fundamental challenge in studies of their fish assemblages. The present study seeks to determine the degree to which landscape variables of Amazonian floodplain lakes influences fish assemblages in these environments. Fish species richness was estimated in 15 Amazonian floodplain lakes during the high and low-water phases a...
Unexpected fish diversity gradients in the Amazon basin
Oberdorff, Thierry; Dias, Murilo Sversut; J?z?quel, C?line; Albert, James Spurling; Arantes, Caroline Chaves; Bigorne, RémyUsing the most comprehensive fish occurrence database, we evaluated the importance of ecological and historical drivers in diversity patterns of subdrainage basins across the Amazon system. Linear models reveal the influence of climatic conditions, habitat size and sub-basin isolation on species diversity. Unexpectedly, the species richness model also highlighted a negative upriver-downriver gradient, contrary ...