Periodically-harvested closures are commonly employed within co-management frameworks to help manage small-scale, multi-species fisheries in the Indo-Pacific. Despite their widespread use, the benefits of periodic harvesting strategies for multi-species fisheries have, to date, been largely untested. We examine catch and effort data from four periodically-harvested reef areas and 55 continuously-fished reefs in Solomon Islands.
A literature review indicated that artificial reefs seemed promising as refuges for fauna and to increase fish productivity. The author studied this alternative and after several months of preparatory arrangements a small reef was built between June and April 1984 at a depth of 10 m using approximately 400 scrap tires on the eastern shore of the Gulf of Nicoya, Costa Rica.
An examination is made of the fish production potential of coral reef areas and techniques used to estimate possibleyields.
This report is an outcome of a collaborative effort between ICLARM and the University of Philippines - Visayas with funding support from Sida under the project "Valuation and policy analysis for sustainable management of coral reefs". The report summarizes various outputs provided by Taklong Island National Marine Reserve( TINMAR) that directly benefit the coastal communities and other resource users. The biological studies reviewed in the report also indicated that fish biomass has increased which can be attributed to the protection of the area as a marine reserve.
Under the Reefs at Risk Revisited project, World Resources Institute (WRI) and its partners (The Nature Conservancy, The WorldFish Center, ICRAN etc) have developed a new, detailed assessment of the status of and threats to the world's coral reefs. This information is intended to raise awareness about the location and severity of threats to coral reefs. These results can also catalyze opportunities for changes in policy and practice that could safeguard coral reefs and the benefits they provide to people for future generation.
A major new international research program of importance to fisheries is likely to be adopted later this year. Ocean Sciences in Relation to Living Resources, sponsored by FAO and IOC, a proposal concerning the relationship between ocean variability and fish variability has been developed by a special group, as well as suggestions for incremental development of a broader program on the relationship of ocean science and living resources.
In addition to their unique biological characteristics, coral reef fisheries have a feature which separates them from all other marine systems; the presence of coral outcrops makes the use of trawls and other modern industrial fishing gear types unfeasible. Coral reef systems are, therefore, the domain of the small-scale. fisher. The sheltered waters created by the coral reef systems, combined with the high productivity.of the system, have been an inducement to human settlement.
The length-weight relationship of 29 marine fish species form Reunion Island (SW Indian Ocean) belonging to 14 families were computed. Data from 5,340 individuals were used for this purpose. Fish were sampled using different techniques, mainly with rotenone poisoning on coral reef flats, beach seine and handlines on shallow coastal bays, and longline fishing in the nearby open sea.
Activities undertaken in the field of reef conservation are discussed in detail. Harvesting reef resources, national parks and protected areas, research and monitoring, and general management of coastal waters are covered. International initiatives are also considered.
A description is given of the Japanese muro-ami fishing gear, which although is very effective in catching elusivereef fish, causes considerable reef damage during its operation.