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The California quail is the state bird of California. It was established as the state bird in 1931. [3] [8] The quail population has fluctuated significantly throughout California. Once plentiful in San Francisco, by 2017 only one California quail remained in the city. Local birders named the male bird Ishi after the last known member of ...
The California dogface butterfly has been the state insect of the U.S. state of California since 1972. [6] Its endemic range is limited to the state. California was the first state to choose a state insect—and thus, to choose a butterfly —though most of the other states have now followed, and many even have both a state insect and state ...
Jack mackerel caught by a Chilean purse seiner Fishing down the food web. Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area.
The overfishing list reflects species that have an unsustainably high harvest rate. NOAA also keeps a list of overfished stocks. Those are species that have a total population size that is too low.
Jack mackerel caught by a Chilean purse seiner Fishing down the food web. Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area.
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Human activities affect marine life and marine habitats through overfishing, habitat loss, the introduction of invasive species, ocean pollution, ocean acidification and ocean warming. These impact marine ecosystems and food webs and may result in consequences as yet unrecognised for the biodiversity and continuation of marine life forms.
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