An examination is made of the effects of the eruption of Mount Pinatubo on Luzon Island, northwestern Philippines in June 1991 on the Country's fisheries, considering in particular the coral reef environment, inland fisheries and aquaculture.
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 rich marine resource of the Mafia District, Tanzania, especially its coral reefs and mangroves, are in danger of collapse. The proposed marine park faces chronic problems of dynamite fishing and coral mining. The Mafia fisheries resources and the importance of coral reefs are presented together with proposed measures to rescue the Mafia marine environment.
This brief presents a review of lessons learned and good practices in the management of coral reef marine protected areas based on the analysis of 20 projects funded by the Global Environment Facility (GEF) related to coral reef MPAs and 21 non-GEF funded projects. The key lessons learned and recommendations are grouped according to four broad areas of management of coral reef marine protected areas: 1. Ecological objectives and impacts 2. Socio-cultural objectives and impacts 3. Economic objectives and impacts 4. Governance issues
Length-weight relationships of 335 species of fish of New Caledonia, belonging to 65 families of coral reef fishes, were computed (80%) or assembled from the literature (20% of all cases) to facilitate, among other things, estimation of coral reef fish biomass from visual census.
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.
Length-weight relationships of 316 reef and lagoon fish from New Caledonia (SW Pacific Ocean) belonging to 68 families are computed. A total of 43,750 individuals was used for this purpose. Fish were sampled by different techniques such as rotenone poisoning, handline and bottom longline fishing, gill and trammel nets, and trawling in various isotopes (coral reefs, lagoon bottoms and mangroves).
Growth parameters and mortality rates were estimated from length-frequency data sampled in 1982, using the FiSAT software, for three coral reef fish species, the surgeon fish (Ctenochaetus striatus), the damselfish (Stegastes nigricans) and the squirrel fish (Sargocentron microstoma) in Tiahura Reef, Moorea Island, French Polynesia.
Difficulties in scaling up theoretical and experimental results have raised controversy over the consequences of biodiversity loss for the functioning of natural ecosystems. Using a global survey of reef fish assemblages, we show that in contrast to previous theoretical and experimental studies, ecosystem functioning (as measured by standing biomass) scales in a non-saturating manner with biodiversity (as measured by species and functional richness) in this ecosystem.
Failures of fishery management to control fishing effort globally and how this affects the coral reef fisheries are discussed. The use of marine reserves in coral reef fisheries management is also emphasized.