Diversidad de las comunidades de algas asociadas a un sistema algal de alta tasa fotosintetica para la biorremediacion de lixiviados de rellenos sanitarios

Abstract

Most fishing management systems in the world have long assessed andmanaged single-stocks over very large areas. The increasing use of theoceans and the problems faced by many fisheries have increased the trendto focus on spatial-based fisheries management. Most of the Brazilianindustrial fisheries concentrate in the so-called ``southeastern-southregion{''} (SE/S), a large jurisdictional area exceeding 1600 km oflatitudinal extent, along which industrial demersal fishing vesselsoperate quite unrestrictedly, resulting in large overlapping in theircatch composition and fishing areas. Despite being essentiallymulti-specific, management of these fisheries is focused on a fewtarget-species, with poor results in terms of sustainability. This paperaimed at identifying possible future spatial fishing management unitsfor the region, based on the distribution of demersal stocks, depth,bottom characteristics and fishing dynamics from double-rig, pair andstern trawlers, bottom gillneters, bottom longliners and octopus potterswhich were landed in Santa Catarina harbors (southern Brazil) between2010 and 2012. Based on these data and information from existingliterature, six potential spatial units were proposed at coastal (<30 mdepth), shelf (southeastern and southern sectors) (30 to 100 m), shelfbreak (100 to 250 m) and slope areas (> 250 m). This new schemerepresents a step forward in designing a final spatial management modelfor the SE/S industrial fisheries, improving a previous model publishedin the early 2000's and conforming, in general, to the three mainsubdivisions recognized for the South Brazil Large Marine Ecosystem.