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Variable effort fishing models in random environments
Mathematical Biosciences, 1999We study the growth of populations in a random environment subjected to variable effort fishing policies. The models used are stochastic differential equations and the environmental fluctuations may either affect an intrinsic growth parameter or be of the additive noise type.
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Integrated fish farming: An international effort
American Journal of Alternative Agriculture, 1986AbstractIn much of the developing world, the high cost of purchased feeds makes meat and milk too expensive to be consumed by the producers' own families. A fish pond integrated with livestock or crop production provides an important source of animal protein for home consumption or sale.
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Fishing area, effort, and yield
1981The drainage system centering on the Rio Madeira can be divided into three main commercial fishing regions: 1) Beginning upriver, the first is the large area embracing the Rio Beni, Rio Mamore, and Rio Guapore. The Rio Beni lies entirely within Bolivia, while the Rio Mamore and Rio Guapore are shared with Brazil.
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Enjoying Catch and Fishing Effort: The Effort Effect in Recreational Fisheries
Environmental and Resource Economics, 2013Recreational fishermen derive utility from catch and fishing effort. Building our analysis on the Gordon-Clark model for renewable resources, we show that a lower importance of catch may result in higher catches. While this effect also holds under first-best management, it may destabilize open-access recreational fisheries to the point of stock ...
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Assessing electric fishing sampling effort to estimate stream fish assemblage attributes
Fisheries Management and Ecology, 2012AbstractTheEU WaterFrameworkDirective (WFD) obligates authorities to assess the ecological status of rivers. The sampling of the fish assemblage must be based on a reliable and cost‐effective monitoring programme, and it should be optimised to measure the ecological quality cost‐effectively.
Vehanen, T. +4 more
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Prediction of fishing effort distributions using boosted regression trees
Ecological Applications, 2014Concerns about bycatch of protected species have become a dominant factor shaping fisheries management. However, efforts to mitigate bycatch are often hindered by a lack of data on the distributions of fishing effort and protected species. One approach to overcoming this problem has been to overlay the distribution of past fishing effort with known ...
Candan U, Soykan +3 more
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Using diaries to estimate fishing effort and fish consumption: A contemporary assessment
Human Dimensions of Wildlife, 1996Abstract This paper examines both the strengths and weaknesses of the diary method, focusing on a recent use of the method for measuring both fishing participation and fish consumption. A diary was sent to the 1,202 anglers willing to keep a record of fish consumption and fishing trips to Lake Ontario and other New York waters in 1992.
Nancy A. Connelly, Tommy L. Brown
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Further Notes on Fishing Mortality and Effort
Copeia, 1944ECENTLY Dr. Milner B. Schaeffer (1943) has made a contribution to our knowledge concerning the relationship between fishing effort and fish mortality. His results lead him to suggest that parts of the writer's 1940 paper, on the same general topic, stand in need of revision.
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Evaluating Fish Biodiversity and Fishing Effort in the Lidder River, Kashmir
UTTAR PRADESH JOURNAL OF ZOOLOGYThe study aimed to assess fish diversity and catch per unit effort (CPUE) in the Lidder River, an important tributary of the Jhelum River in Kashmir. Six fish species belonging to Cyprinidae, Sisoridae, Balitoridae, and Salmonidae were identified. Schizothorax plagiostomus, S. esocinus, and S.
Shafiya M. Bhat +8 more
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Effects of fishing effort limitation
Marine Policy, 1980Stephen Cunningham +2 more
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