نتایج جستجو برای: fish farming
تعداد نتایج: 127448 فیلتر نتایج به سال:
Seasonal changes of zooplankton communities were monitored at two coastal marine areas, Uchiumi and Fukuura Bays located at the Uwa Sea, east side of Bungo Channel. The two sites are close to each other (c.a. 20 km) with similar habitat environments, but receive different environmental stresses from aquaculture activities, pearl oyster farming for Uchiumi Bay and fish farming for Fukuura Bay. S...
INTRODUCTION An excess of nitrates causes environmental pollution in receiving water bodies and health risk for human, if contaminated water is source of drinking water. The directive 91/676/ CEE [1] aims to reduce the nitrogen pressure in Europe from agriculture sources and identifies the livestock population as one of the predominant sources of surplus of nutrients that could be released in w...
In the face of global overfishing of wild-caught seafood, ocean fish farming has augmented the supply of fresh fish to western markets and become one of the fastest growing global industries. Accurate reporting of quantities of wild-caught fish has been problematic and we questioned whether similar discrepancies in data exist in statistics for farmed fish production. In the Mediterranean Sea, o...
Pacific salmon abundance along the West Coast of Canada has been in sharp decline since the early 1990s. Declines have been most severe for coho and chinook salmon despite large additions of hatchery-reared fry and smolts. There is particular concern for populations of wild coho because, in addition to low abundance, up to 80% of the juvenile coho in the coastal waters has been identified as be...
It has often been observed that after sea-cage fish farming begins in a coastal area, nearby wild fish populations steadily or precipitously decline due to elevated levels of pathogens and parasites. Such declines can be understood using three methods, in increasing level of mathematical difficulty: (1) an intuitive approach based on the inverse-square law of radiation applied to parasite trans...
In Greece, up until now, monoculture has been the prevailing fish and shellfish farming system. However, in the last few years, the farmers seek to develop alternative production patterns that could improve the economic performance of their farms through the optimal utilisation of the available resources. The concept of integrated aquaculture is old; however during the last 30 years many author...
This paper describes the potential of aquaponic as a poverty eradication tool in Malaysia. Although Malaysia is recognized as a developed country, poverty is still occurring among Malaysian, especially from rural area. Therefore, aquaponic – a modern farming system is being introduced to benefit the low income family. Aquaponic is the term that described the synergistic combination of aquacultu...
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