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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.
A recent survey of global ocean health concluded that all parts of the ocean have been affected by human development and that 41 percent has been fouled with human polluted runoff, overfishing, and other abuses. [26] Pollution is not easy to fix, because pollution sources are so dispersed, and are built into the economic systems we depend on.
A 2021 study published in the journal Nature asserted that the "primary cause" of ocean defaunation is overfishing. [31] Other studies have shown that overfishing has reduced fish and marine mammal biomass by 60% since the 1800s, [40] and is currently driving over one-third of sharks and rays to extinction. [41]
Assigning Large-Scale Marine Protected Areas (LSMPAs) (at least 100,000 square km in area) aims to reduce the consequences of resource exploitation (e.g. overfishing) and to protect ocean ecosystems by reducing human disturbance in designated areas. However, there are related concerns surrounding LSMPAs that need attention in order to help ...
While sharks sit near the top of the food chain in the ocean, their extinction would still have an effect on our life. Without sharks, the ecosystem would be thrown off, triggering changes to the ...
These protected areas may be established for a variety of reasons and aim to limit the impact of human activity. These protected areas operate differently which includes areas that have seasonal closures and/or permanent closures as well as multiple levels of zoning that allow people to carryout different activities in separate areas; including ...
Dec. 8—Aquatic biologists have long known the importance of algae-eating fish to the overall health of coral reefs. But new research documents just how important species like surgeonfish and ...
Researchers have warned that human impact on the ocean is putting increasing pressure on dolphins and whales, and their ecosystems. The UK whale and dolphin conservation charity Orca recorded ...