The feed conversion ratio (FCR) or its reciprocal, the feed efficiency ratio (FER) is currently used to estimate the feed requirements in aquaculture. This has a serious disadvantage. The FCR is a function of feeding rate, initial and final mass at fattening, temperature and quality of feed. Therefore the FCR...
Beam trawling on brown shrimp (Crangon crangon) is one of the most important fisheries for the German fleet. It is an open fishery without a defined quota. Indicators such as increased by-catch, a predominance of undersized shrimp in catches, and a high fishing mortality all suggest that improved gear selectivity...
This study compares globally available integrated ecological-economic models with focus on use and implementation in scientific and advisory contexts. The Ecosystem based Approach to (Fisheries) Management (EAM) calls for an understanding and management of fisheries and other uses of the marine environment that explicitly take into account ecological, economic and...