Author: Daniel PaulyPublisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 48
Book Description
Theory and Management of Tropical Multispecies Stocks
Author: Daniel PaulyPublisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 48
Book Description
Theory and Management of Tropical Fisheries
Author: Daniel PaulyPublisher: WorldFish
ISBN: 9710400223
Category : Fishery management
Languages : en
Pages : 355
Book Description
Theory and Management of Tropical Multispecies Stock
Author: Daniel PaulyPublisher:
ISBN: 9780899553986
Category :
Languages : en
Pages : 35
Book Description
Status and Management of Tropical Coastal Fisheries in Asia
Author: Geronimo SilvestrePublisher: WorldFish
ISBN: 9718709029
Category : Fisheries
Languages : en
Pages : 218
Book Description
FAO-ICLARM stock assessment tools
Author: F. C. GayaniloPublisher: Food & Agriculture Org.
ISBN: 9789251040478
Category : Fish stock assessment
Languages : en
Pages : 280
Book Description
Some Simple Methods for the Assessment of Tropical Fish Stocks
Author: Daniel PaulyPublisher: Food & Agriculture Org.
ISBN: 9789251013335
Category : Pets
Languages : en
Pages : 72
Book Description
This selection of methods is based on lecture notes used at a FAO/DANIDA training course held in Mombasa, Kenya, in May-June 1980. The methods presented are: regression and correlation, estimation of growth parameters from length-frequency data, estimation of mortalities (total, natural, fishing mortality) and analysis of catch and effort data. A brief annotated bibliography of tropical fish stock assessment is included.
Approaches to the Regulation of Fishing Effort
Author: J. R. BeddingtonPublisher: Food & Agriculture Org.
ISBN: 9789251014929
Category : Fisheries
Languages : en
Pages : 52
Book Description
The problems of controlling fishing effort are reviewed. Any method should satisfy certain criteria - maintaining the productivity of the resource, economic performance and equity (or social needs). The methods of achieving these objectives are reviewed; they include the setting of catch limits, direct control of fleet capacity (e.g. restricting the number of fishing units), indirect measures (mesh size, closed areas), financial measures and the establishment of property rights to fishing areas or quantities of fish. The advantages and disadvantages of each approach are discussed in the light of the established criteria and appropriate techniques are given for six specific types of fisheries.
Bibliography of Agriculture
Author: NOAA Technical Report NMFS.
Author: An Ecological Framework for Marine Fishery Investigations
Author: J. F. CaddyPublisher: Food & Agriculture Org.
ISBN: 9789251025109
Category : Nature
Languages : en
Pages : 166
Book Description
The text is intended as supplementary reading for fisheries workers, especially in developing countries, who do not always have ready access to current literature on applied marine ecology. An attempt is made to develop a wide range of concepts in a form that will hopefully encourage their incorporation into a practical, decision-making context. The food web and associated trophic interactions form the principal theme, in an approach that gives equal emphasis to qualitative, as well as the less easily measured quantitative considerations. An attempt is made to illustrate the consequences of the aggregated nature of much of marine production, as well as the subsequent dispersal of production in space and time, and how these processes affect the potential for economic harvest of commercial components of the ecosystem. Separate sections touch on environmental influences on production, relevant spatial and temporal scales for ecosystem analysis, life history strategies, diversity and stability, the concepts of the ecological niche, the community and the assemblage, and outline some first steps towards quantifiying production in marine ecosystems. Different approaches to representing trophic and other interactions are discussed, with examples from the literature. Reference is made to several ecological subsystems, in order to illustrate the main concepts presented. These include the mangrove ecosystem, the arcto-boreal macrophyte community, a mediterranean demersal fish assemblage, and the oceanic ecosystem associated with high seas tuna stocks. In practical terms, it is concluded that the first and simplest approach to multispecies resource management is not necessarily the manipulation of individual food web components, but the identification, mapping and conservation of critical habitats, especially centres of local production, and their associated ecological dissipation structures.