FAUNISTIC ASSOCIATION AND EFFECTS OF ENVIRONMENTAL VARIABLES IN THE SPACE-TEMPORAL DISTRIBUTION IN THE STRUCTURE OF THE FISH FISHING COMMUNITY OF THE NORTHERN COAST OF BRAZIL

• Autor(a) principal: Freitas, Leandro Maciel
• Data de Publicação: 2019
• Outros Autores: Pamplona, Fábio Campos Ribeiro, Cintra, Israel Hidenburgo Aniceto, Klautau, Alex Garcia Cavalleiro de Macedo, Paes, Eduardo Tavares
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Biota Amazônia
• Texto Completo: https://periodicos.unifap.br/index.php/biota/article/view/4445
• topic: Arrasto; estuário; plataforma; variação; ecologia

The North Coast, has high biological productivity and áreas with a muddy substrate, suitable for trawling. This modality, there is trawling for various fishes. This fishery despite the denomination, acts on a target specie. Pescada gó, but it captures various species. This study aimed to characterize the faunistic associations in the structure of the main community of this fishry, and to determine the environmental facotrs, which may be related to temporal and spatial variations of this community. The data were acquired through the monitoring of 227 trawls, in six distinct periods, between 2013 and 2014, by on board observers in a detained vessel. The species caught were identified on board. Twenty six species were captured, but for the subsequente analyzes, only eleven species were used, which represented 95% of the caught production. For the associations between species, the grouping analysis was applied, using CPUE data standardizing in ranging and the Ward algorithm to the formation of theses faunistic groups, to the grouping of trawls, gross CPUE data were used in order to group the trawls in relation to their composition and catch periods. For the factors that correlate with the community distribution, redundancy analysis was usedm using environmmental, temporal and spatial variables. Three distinct groups with faunal associations were found, in relation to the trawls, two large grupos with differentss behavior. Regarding correlation facotrs, the set of temporal variables was more influential to this community, followed by environmental varaibles and a few influence by spatial variables.Keywords: Trawling; estuary; shelf; variation; ecology.