Knowra Sustainable harvesting Sustainable harvesting Sustainable harvesting collects biological resources at rates and by methods that allow populations, ecosystems, or cultivated stocks to remain productive over time.
Harvest control rule : A predefined rule that adjusts permitted harvest in response to indicators such as population size or catch rates. It translates stock assessments into changing limits as resource conditions shift.
Renewable resource : A resource replenished by natural processes or cultivation on a human timescale. Harvesting is sustainable only when extraction respects the resource’s capacity to renew.
Sustainable fisheries : Fisheries managed to maintain target populations and ecosystem function while supporting continued fishing. Fishery rules apply harvest limits to mobile populations with variable recruitment.
Overexploitation : The removal of organisms or resources at rates that reduce populations or impair their capacity to recover. It describes the depletion that sustainable harvest aims to prevent.
Biodiversity : The variety of life across genes, species, and ecosystems. Selective or excessive extraction can reduce species abundance and genetic diversity.
Fish stock assessment : The estimation of a fish population’s size, productivity, and response to fishing using biological and catch data. Harvest decisions depend on estimates of abundance and reproductive capacity.
Population dynamics : The study of how population sizes and structures change through births, deaths, migration, and environmental conditions. These changes determine how quickly harvested populations can recover.
Sustainable forestry : Forest management that maintains ecological, social, and economic functions over time, including timber production. Rotation periods, regeneration, and habitat protection shape sustainable timber harvest.
Maximum sustainable yield : The largest average harvest that can be taken from a renewable population under specified conditions without reducing its long-term productivity. Unlike the broader sustainability goal, this single-species target can neglect uncertainty and ecosystem effects.
Defaunation : The loss or decline of animal populations and species from ecological communities. Unsustainable hunting and fishing can remove animals faster than populations replace them.
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