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Stock identification is a field of fisheries science which aims to identify these subpopulations, based on a number of techniques.This concept is applied in sustainable development goal 14 where target 14.4 is measured a fish stock sustainability indicator 14.4.1. [1]
Sustainability can mean different things to different people. Some may view sustainable fishing to be catching very little in order for fish populations to return to their historical levels (represented by the upper left green area), while others consider sustainability to be the maximum amount of fish we can catch without depleting stocks any further (red dot).
The new technologies adversely affected the northern cod population by both increasing the area and depth that was fished. The cod were being depleted until the surviving fish could not replenish the stock lost each year. [4] The trawlers caught enormous amounts of non-commercial fish, which were very important ecologically.
Optimum sustainable yield. In population ecology and economics, optimum sustainable yield is the level of effort (LOE) that maximizes the difference between total revenue and total cost. Or, where marginal revenue equals marginal cost. This level of effort maximizes the economic profit, or rent, of the resource being utilized.
Sustainable yield in fisheries. The sustainable yield of natural capital is the ecological yield that can be extracted without reducing the base of capital itself, i.e. the surplus required to maintain ecosystem services at the same or increasing level over time. This yield usually varies over time with the needs of the ecosystem to maintain ...
To improve their overfishing prevention programs, the NMFS has implemented the Fish Stock Sustainability Index (FSSI), which measures key stocks according to their overfishing status and biomass levels. Since the FSSI began the index has increased every year. [12] The act also has impacts on financial matters.
Fisheries management. The goal of fisheries management is to produce sustainable biological, environmental and socioeconomic benefits from renewable aquatic resources. Wild fisheries are classified as renewable when the organisms of interest (e.g., fish, shellfish, amphibians, reptiles and marine mammals) produce an annual biological surplus ...
Sustainable seafood. Sustainable seafood is seafood that is caught or farmed in ways that consider the long-term vitality of harvested species and the well-being of the oceans, as well as the livelihoods of fisheries-dependent communities. It was first promoted through the sustainable seafood movement which began in the 1990s.