نتایج جستجو برای: valuable fishery resources
تعداد نتایج: 376737 فیلتر نتایج به سال:
Introduction 285 MPAs, stock assessments and spatial modelling in marine ecosystems 286 The role of fisheries science in management 287 Fishery-dependent information 288 Life-history information 290 Catch demographic data 291 Fishery-independent surveys 291 Spatial variability and movement patterns 293 Structure of assessment models 293 Fisheries management objectives and obligations 296 Abstra...
Although caviar is the most significant and famous fishery product of Iran, in recent years the country has gained a lot of experience and had some significant success with other fishery and aquaculture products. Iranian fisheries and aquaculture production reached 522,000 metric tons in 2005, of which 75% originated from capture fishery and 25% from aquaculture activities. Various fishery and ...
Sandy Hook Laboratory. Northeast Fisheries Science Center National Marine Fisheries Service. NOAA Highlands. New Jersey 07732 Analysis of fishery resources: potential risk from sewage sludge dumping at the deepwater dumpsite off New Jersey Abstract.-Analytical and statistical procedures were applied to bottom trawl survey data in tests of hypotheses about potential effects of sewage sludge dump...
In recent years, as offshore resources, not only fishery resources, including oil, natural gas, rare metals, and other minerals attract increasing attention, national surveys have been underway in the vast seas that surround Japan. IHI applied own robot technologies to take another step forward in achieving autonomous unmanned maritime systems for conducting detailed surveys at a water depth of...
Among the questions that ecosystem-based management raises for economists is how to partition uses of the many biological, chemical and physical attributes of marine ecosystems into sets of property rights that undergird total ocean wealth. An elemental basis of property rights for fisheries involves the interplay between ecological and technological interactions, including sideeffects (externa...
In this paper, the large amount of sedimentation and the resultant shoreline advancements at the breakwaters of Beris Fishery Port are studied. A series of numerical modeling of waves, sediment transport, and shoreline changes were conducted to predict the complicated equilibrium shoreline. The outputs show that the nearshore directions of wave components are not perpendicular to the coast whic...
As an application of mathematics to engineering problems, this paper formulates a simple optimal stopping problem to decide the opening time of harvesting farmed fishery resources that maximizes an economic objective function. A sufficient condition for unique existence of the internal optimal opening time is provided and its concrete mathematical analysis is carried out. Comparative statics of...
Marine biomass including fishery products are precious protein resources for human foods and are an alternative to livestock animals in order to reduce the virtual water problem. However, a large amount of marine waste can be generated from fishery products and it is not currently recycled. We evaluated the metabolism of digested marine waste using integrated analytical methods, under anaerobic...
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