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Now showing items 41-50 of 56
Tabular data on marine fishes from Southern Africa. Part II: growth parameters
Type: Journal Article
This contribution presents von Bertalanffy growth parameter estimates for 28 species of marine fishes derived from growth curves in R. van der Elst's "Guide to the Common Sea Fishes of Southern Africa".
Fisheries and aquaculture research capabilities and needs in Africa: studies of Kenya, Malawi, Mozambique, Zimbabwe, Mauritania, Morocco, and Senegal
Type: Journal Article
This Technical Report contains the results of 2 missions. One mission deals with the state of fisheries andaquaculture research as well as research needs in 4 countries in Southeastern Africa: Kenya, Malawi,Mozambique an ...
Fish production, catches and the carrying capacity of the world oceans
Type: Journal Article
A brief review of the status of the world fisheries is presented with emphasis on the differences between catches (= landings + bycatch), biological production of fish, and predation (= production - catches). The ECOPATH ...
Resharpening Ockham's razor
Type: Journal Article
Ockham's dictum is discussed in this essay.
Structuring dynamic models of exploited ecosystems from trophic mass-balance assessment
Type: Journal Article
The linear equations that describe trophic fluxes in mass-balance, equilibrium assessments of ecosystems (such as in the ECOPATH approach) can be re-expressed as differential equations defining trophic interactions as ...
Guide du logiciel ECOPATH II (version 2.1)
Type: Manual
This guide documents the use and background of the ECOPATH II software system written for MS DOS computers for straightforward construction and parametrization of steady-state trophic models of aquatic ecosystems. ECOPATH ...
Biology, fisheries and culture of tropical groupers and snappers
Type: Conference Proceedings
Groupers and snappers are important fishery resources of the tropics and subtropics, where their high values have caused most of their stocks to be heavily exploited, some even to the point of collapse. Trends towards heavy ...
Developments in tropical reef fisheries science and management
Type: Book Chapter
Extinction is conceivable for some species, including aquarium-fish stocks of high value and limited geographical range, but a biological basis exists for management of such small fishes. Immediate data needs are much ...
Le troisieme symposium international sur le tilapia en aquaculture
Type: Conference Proceedings
Tilapias, because of the low cost and relative ease of their production, are a potential food fish staple for many people in tropical countries and a globally traded commodity. This volume of symposium proceedings shows a ...
Primary production required to sustain global fisheries
Type: Journal Article
The mean of reported annual world fisheries catches for 1988-1991 (94.3 million t) was split into 39 species groups, to which fractional trophic levels, ranging from 1.0 (edible algae) to 4.2 (tunas), were assigned, based ...