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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.
Climate change in California has resulted in higher than average temperatures, leading to increased occurrences of droughts and wildfires. [3] Over the next few decades in California , climate change is predicted to further reduce water availability, increase wildfire risk, decrease agricultural productivity , and threaten coastal ecosystems. [ 4 ]
Overfishing of king and Spanish mackerel occurred in the 1980s. Regulations were introduced to restrict the size, amount of catch, fishing locations, and bag limits for recreational fishers as well as commercial fishers. Gillnets were banned in waters off Florida. By 2001, the mackerel stocks had bounced back. [5]
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.
This prompted major amendments in 1996 and 2006. The National Marine Fisheries Service issued a report to Congress in 2010 on the status of U.S. fisheries. It reported that of the 192 stocks monitored for overfishing 38 stocks (20%) still have fish "mortality rates that exceed the overfishing threshold … and 42 stocks (22%) are overfished". [12]
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.
A dry start to the water year in California could ignite drought conditions in a matter of months, climate experts warn. The state is undergoing its worst start to a water year in a decade, ...
The 2011–2017 California drought persisted from December 2011 to March 2017 [1] and consisted of the driest period in California's recorded history, late 2011 through 2014. [2] The drought wiped out 102 million trees from 2011 to 2016, 62 million of those during 2016 alone. [ 3 ]