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Ebooks on agriculture and the applied life sciences from CAB International
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There is considerable evidence that environmental variability plays a major role in controlling abundance and distribution of marine populations and that fisheries alter ecosystem functioning and state. This overview documents emergent, i.e. visible to us as observers, ecosystem-level ecological...
This chapter describes the objectives of the Reykjavik Conference on Responsible Fisheries in the Marine Ecosystem, which aimed to gather and review the best available knowledge on marine ecosystem issues, identify means by which ecosystem considerations can be included in fisheries management and...
Traditional approaches to fisheries management, which have been singular, species-based and nonsectoral, have failed to protect the world's fisheries resources. This has resulted in the overexploitation of fish stocks, displacement of fishing fleets and dislocation of fishing communities. The first ...
The latest FAO review of the state of the world's marine fishery resources confirms that, from the information available, about 50% of global resources are fully exploited, 25% are overexploited and about 25% could apparently support higher exploitation rates. While the proportion of overfished...
In considering 'responsible fisheries', the focus usually is on potential effects of fisheries on ecosystems and habitats (i.e. effects of fisheries on the environment). For most, the term 'responsible fisheries' implies a need for a change in fishing practices to protect or improve the state of...
Fishing affects seabed habitats worldwide. However, these impacts are not uniform and are affected by the spatial and temporal distribution of fishing effort, and vary with the habitat type and environment in which they occur. Different fishing methodologies vary in the degree to which they affect...
The new millennium marks a time when scientific opinion and environmentalist sentiment are at last converging on the perception that the world's natural marine heritage is facing grave threats. What environmentalists have come to call the 'marine biodiversity crisis' is a pervasive and by now...
Recent developments in navigational aids and instruments for improving the classification of bottom habitats enable the fishing industry to harvest target resources more efficiently and to reduce impacts on benthic habitats and their communities. These changes hold promise for the achievement of...