نتایج جستجو برای: iranian fisheries
تعداد نتایج: 55408 فیلتر نتایج به سال:
Meeting the widely expressed requirement that fisheries should somehow be managed on an ‘ecosystem basis’ implies that fisheries-relevant ecological processes, and the fisheries themselves, need to be documented in the form of maps. This allows recovery, in intuitive fashion, of at least some of the many dimensions of the complex ecosystems in which the fisheries are embedded. The implied trans...
Sea turtles interact with a variety of fishing gears across their broad geographic distributions and ontogenetic habitat shifts. Cumulative assessments of multi-gear bycatch impacts on sea turtle populations are critical for coherent fisheries bycatch management, but such estimates are difficult to achieve, due to low fisheries observer effort, and a single-species, single-fishery management fo...
Ongoing declines in production of the world's fisheries may have serious ecological and socioeconomic consequences. As a result, a number of international efforts have sought to improve management and prevent overexploitation, while helping to maintain biodiversity and a sustainable food supply. Although these initiatives have received broad acceptance, the extent to which corrective measures h...
IUCN (International Union for the Conservation of Nature) and University of Tasmania; U.S. National Marine Fisheries Service, Southeast Fisheries Science Center, 3209 Frederic Street, Pascagoula MS 39567, USA; North Carolina Division of Marine Fisheries, 3441 Arendell Street, Morehead City, NC 28557, USA; WIDECAST and Duke University Marine Laboratory, 135 Duke Marine Lab Road, Beaufort, North ...
The ecosystem approach is being promoted as the foundation of solutions to the unsustainability of fisheries. However, because the ecosystem approach is broadly inclusive, the science for its implementation is often considered to be overly complex and difficult. When the science needed for an ecosystem approach to fisheries is perceived this way, science products cannot keep pace with fisheries...
This report identifies the different effects the variability of fisheries resources has on society, the different groups (at individual, national and international level) which play a role in the decision-making process, and those sectors that are more seriously affected by resource fluctuations. The report also discusses the development of some fisheries in the past, sources of problems relate...
R. J. David Wells1,2*, Michael J. Kinney3, Suzanne Kohin4, Heidi Dewar4, Jay R. Rooker1,2, and Owyn E. Snodgrass3 Department of Marine Biology, Texas A&M University at Galveston, 1001 Texas Clipper Rd, Galveston, TX 77553, USA Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, Texas, 77843, USA Ocean Associates; Under Contract to Southwest Fisheries Science Ce...
Seals and humans often target the same food resource, leading to competition. This is of mounting concern with fish stocks in global decline. Grey seals were tracked from southeast Ireland, an area of mixed demersal and pelagic fisheries, and overlap with fisheries on the Celtic Shelf and Irish Sea was assessed. Overall, there was low overlap between the tagged seals and fisheries. However, whe...
The resilience of small-scale fisheries in developed and developing countries has been used to provide lessons to conventional managers regarding ways to transition toward a social-ecological approach to understanding and managing fisheries. We contribute to the understanding of the relationship between management and the resilience of small-scale fisheries in developed countries by looking at ...
The ultimate goal of an agriculture research system is on-time, correct and clear response to the problems and expectations of agriculture household and stakeholders. In this respect, though, due to variation and frequency of the problems and expectations and as well as many limitations such as financial deficit, short time and shortage in work force and equipments etc, the system cannot be tho...
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