Zobrazeno 1 - 10
of 23
pro vyhledávání: '"D. M. Ware"'
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 57:1878-1887
A new fuzzy logic model with a genetic algorithm is developed that overcomes some of the inherent uncertainties in the fish stock-recruitment process. This model is applied to stock-recruitment relationships for the Southeast Alaska pink salmon (Onco
Autor:
Ding-Geng Chen, D. M. Ware
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 56:2385-2396
A neural network model is developed to forecast the recruiting biomass of fish. The west coast of Vancouver Island, British Columbia, Pacific herring (Clupea pallasi) stock is selected as an example application based on data compiled from long-term e
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 51:460-463
The Pacific sardine (pilchard) (Sardinops sagax) supported an important commercial fishery in British Columbia for more than 20 yr before it suddenly collapsed in the mid-1940s. We report here the first confirmed catches of Pacific sardine in British
Autor:
D. M. Ware
Publikováno v:
South African Journal of Marine Science. 12:501-513
The productivities of the Benguela, Peru and California Current upwelling systems and the trophodynamics of the associated hake stocks are compared. Within these large systems, upwelling rate, primary production and fish production are all positively
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 48:2118-2128
We examined aspects of summer feeding in Pacific hake (Merluccius productus) and spiny dogfish (Squalus acanthias). Euphausiids (Thysanoessa spinifera, Euphausia pacifica) and Pacific herring (Ciupea harengus pallasi) accounted for almost all of the
A Method for Forecasting the Timing of Ripeness in Pacific Herring (Clupea harengus pallasi) Females
Autor:
D. M. Ware, R. W. Tanasichuk
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 47:2375-2379
A procedure was developed to forecast when Pacific herring females become ripe. The method uses a size-independent quantitative measure of maturity (D), which is the difference between the observed GSI (gonosomatic index) and the GSI expected at full
Autor:
T. C. Lambert, D. M. Ware
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 42:577-592
Results of a 4-yr study of the vertical distribution, development, and mortality of the early life history stages of Atlantic mackerel (Scomber scombrus) in St. Georges Bay, Nova Scotia, are summarized. Adult mackerel migrate to the southern Gulf of
Autor:
D. M. Ware
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 39:3-13
The use of optimization arguments in evolutionary biology has been criticized because the methodology requires an assumption about what is being maximized by natural selection. As optimality arguments are often a priori and always speculative, the cr
Autor:
D. M. Ware
Publikováno v:
Journal of the Fisheries Research Board of Canada. 34:2308-2315
The mean date of peak spawning of Atlantic mackerel (Scomber scombrus) in the southwestern Gulf of St. Lawrence is July 1 ± 1 wk. This coincides with the maximum abundance of the summer plankton. Mackerel eggs average 1.3 mm in diameter at the begin
Autor:
D. M. Ware, T. C. Lambert
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 41:1565-1569
The spawning tactic of herring (Clupea harengus) wherein batches of eggs are deposited leading to a succession of larval cohorts is elaborated. We found the time interval between cohorts to be a function of larval growth rate as well as larval mouth