Evolución de la pesca costera de arrastre de fondo en Puerto Quequén, provincia de Buenos Aires, Argentina: Periodo 1999-2010

PEREZ COMESAÑA, J. E; NOGUEIRA, J. L.

Revista del Museo de Ciencias Naturales, n.s

Museo Argentino Ciencias Naturales

Lugar: CABA; Año: 2013 vol. 15 p. 183 - 190

1514-5158

Abstract: Evolution of the coastal bottom trawl fishery at Puerto Quequén, Buenos Aires province,Argentina: 1999-2010 period. The occurence of the ?fishing down food web? process at Puerto Quequén was studied, based on the relationship between the temporal pattern of landings and indirect indicators as the mean trophic level an the ?fishing in balance? index. Total landings were obtained from vessels landing reports. For each ear the mean trophic level of fihery and the ?fishing in balance? index were calculated. For the analysis of the temporal series of the mean trophic level, a lineal regression model was used. With relation to total landings, no changes were distinguished. Ten species represent more than the 90 % of total landings. The regression analysis showed a significant ant positive tendency. No declination in the mean trophic level of fishery was observed, thus the ?fishing down food web? process is no occurring at Puerto Quequén. However, the ?fishing in balance index? shows that the fleet has reached a level of limit expansion, starting, probably, with a descendent process making the fishery unbalanced in ecological terms and turning it no sustainable.