Author: Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 904
Book Description
Fishery Investigations
Author: Great Lakes Fishery Investigations
Author: U.S. Fish and Wildlife Service. Great Lakes Fishery InvestigationsPublisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 24
Book Description
Fishery Investigations
Author: Great Britain. Ministry of Agriculture, Fisheries, and FoodPublisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 154
Book Description
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.
Investigation and Monetary Values of Fish and Freshwater Mussel Kills
Author: Rob SouthwickPublisher:
ISBN: 9781934874479
Category : Fish kills
Languages : en
Pages : 165
Book Description
Proceedings (North American Council on Fishery Investigations).
Author: North American Council on Fishery InvestigationsPublisher:
ISBN:
Category : Fisheries
Languages : en
Pages :
Book Description
Proceedings of the North American Council on Fishery Investigations
Author: The Electrical Resistivity Meter in Fishery Investigations
Author: Robert Earl LennonPublisher:
ISBN:
Category : Electric fishing
Languages : en
Pages : 22
Book Description
Progress in Pacific Oceanic Fishery Investigations, 1950-53
Author: Oscar Elton SettePublisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 80
Book Description
Dworshak Dam Impacts Assessment & Fishery Investigations
Author: Melo MaioliePublisher:
ISBN:
Category : Bull trout
Languages : en
Pages : 68
Book Description