Best answer: What is the biggest threat to biodiversity in marine environments like the ocean?

What are the threats to the oceans diversity?

Global warming is causing sea levels to rise, threatening coastal population centers. Many pesticides and nutrients used in agriculture end up in the coastal waters, resulting in oxygen depletion that kills marine plants and shellfish. Factories and industrial plants discharge sewage and other runoff into the oceans.

What is the biggest threat to our oceans?

5 of the biggest threats to life in our oceans

  • Ocean noise. …
  • Ship strikes. …
  • Climate change. …
  • Entanglement in fishing gear. …
  • Plastics and ocean debris. …
  • The good news is that all of these threats can be mitigated. …
  • So as long as we act, and act quickly, we can make a difference.

What is the biggest threat to marine mammals?

The biggest threat to marine mammals worldwide is their accidental capture or entan- glement in fishing gear (known as bycatch), which kills hundreds of thousands of them each year.

What is marine biodiversity?

Marine biodiversity is an aggregation of highly inter-connected ecosystem components or features, encompassing all levels of biological organization from genes, species, populations to ecosystems, with the diversity of each level having structural and functional attributes (Table 1).

What are two current threats to marine biodiversity?

Threats are manifold: i.e., primarily from overexploitation of marine resources, over shing, climate warming, sewage disposal, industrial chemical discharge, oil spills, invasive species, and dredging.

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What are the threats to biodiversity in marine and coastal wildlife?

The pressure on marine ecosystems and the resources they provide is increasing as threats introduced by land-use change, overfishing, climate change, the invasion of non-native species and other impacts of anthropogenic activities affect biodiversity.