نتایج جستجو برای: sustainable fishing
تعداد نتایج: 135278 فیلتر نتایج به سال:
Industrial fishing has been identified as a cause for life history changes in many harvested stocks, mainly because of the intense fishing mortality and its size-selectivity. Because these changes are potentially evolutionary, we investigate evolutionarily stable life-histories and yield in an energy-allocation state-dependent model for Northeast Arctic cod Gadus morhua. We focus on the evoluti...
The non utilization of fishing management techniques in the Amazônia has many causes such as land tenure instability, inadequate legislation and public policies, the advance of cattle ranching over the floodplains and lack of adequate credit and incentives. Amongst the effects caused by this problem we find the alteration of the ecological process in the floodplains, a decrease in some fish sto...
This article investigates the effects of reaching the maximum sustainable yield (MSY) in prey–predator systems where the prey population follows logistic law of growth. Two different models are proposed: (i) first model involves linear prey–predator interaction and intraspecific competition among predator populations, and (ii) the second one is a ratio-dependent prey–predator system. In the fir...
Concerns over fishing impacts on marine populations and ecosystems have intensified the need to improve ocean management. One increasingly popular market-based instrument for ecological stewardship is the use of certification and eco-labeling programs to highlight sustainable fisheries with low environmental impacts. The Marine Stewardship Council (MSC) is the most prominent of these programs. ...
Sustainable development encompasses achieving economic development while maintaining social solidarity and environmental stewardship. Present studies campaign for the agenda of women empowerment for sustainable development in Bangladesh since women are one of the largest disadvantaged groups in this country. The conditions faced by coastal women are even more deplorable and they represent a sub...
The study of fisheries-induced evolution is a research field which is becoming recognized both as an important and interesting problem in applied evolution, as well as a practical management problem in fisheries. Much of the research in fisheries-induced evolution has focussed on quantifying and proving that an evolutionary response has taken place, but less effort has been invested on the actu...
BACKGROUND Historically, fishing is an important activity for riverine communities established along the São Francisco River, including indigenous communities. In the present study, we researched fishing activities in two villages of the Truká ethnic group, both located in the State of Pernambuco along the sub-middle section of the São Francisco River, Northeast Brazil. We recorded the richness...
fleets must shrink. But this needs to be set against a rise in catches, an overall climb in incomes for coastal communities and companies, improvements in the health of the marine environment and ultimately hundreds of millions of people whose incomes and livelihoods are linked to fishing, " he said. The report estimates that there are currently 35 million people fishing for a livelihood and mo...
This paper presents the foundations of a decision support system for the localisation of fisheries based on AI techniques. The purpose of such a system is to reduce the costs of fishing fleets without endangering the sustainable development of the natural resources. Our data sources are satellite images (OrbView-2, Series NOAA, Topex/Poseidon), as well as real catch data obtained from the fishi...
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