What are the greatest threats to terrestrial or aquatic biodiversity?

The three greatest proximate threats to biodiversity are habitat loss, overharvesting, and introduction of exotic species. The first two of these are a direct result of human population growth and resource use.

What are the greatest threats to terrestrial and aquatic biodiversity?

Five main threats to biodiversity are commonly recognized in the programmes of work of the Convention: invasive alien species, climate change, nutrient loading and pollution, habitat change, and overexploitation.

What is the greatest threat to aquatic biodiversity?

Threats to Aquatic Biodiversity

Runoff from agricultural and urban areas, the invasion of exotic species, and the creation of dams and water diversion have been identified as the greatest challenges to freshwater environments (Allan and Flecker 1993; Scientific American 1997).

What are the threats to aquatic biodiversity?

Six threats affect aquatic biodiversity; climate change, overexploitation, water pollution, habitat degradation, flow modification and exotic species invasion. Biodiversity maintenance is considered one of the leading keys to ecosystem services retention.

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What are the greatest threats to terrestrial?

The major proximal threats and their consequences—deforestation, habitat fragmentation, mining, urbanization and infrastructure development, logging and the collection of non-timber forest products, hunting and the wildlife trade, fires, invasive species, emerging infectious diseases, air pollution and nutrient …

What do you think are the three greatest threats to aquatic biodiversity and ecosystem services?

A. There are many threats to freshwater ecosystems, including habitat destruction, invasive species, climate change and overharvesting fish.

What are the main threats of biodiversity?

6 Main Threats to Biodiversity – Explained!

  • Human Activities and Loss of Habitat: …
  • Deforestation: …
  • Desertification: …
  • Marine Environment: …
  • Increasing Wildlife Trade: …
  • Climate Change:

What is terrestrial biodiversity?

terrestrial biodiversity refers to animals, plants and micro-organisms that live on land, and also land habitats, such as forests, deserts and wetlands.

What are the major threats to aquatic biodiversity and ecosystem services quizlet?


  • Habitat Loss and Degradation.
  • Invasive species.
  • Population Growth.
  • Pollution.
  • Climate Change.
  • Overfishing.

What can decrease aquatic species?

Many factors can play a role in the loss of species, including: Habitat loss and degradation due to human population growth and land use changes. Pollution and changes in water quality. Climate changes including water temperature, hydrology and acidification of marine waters.

What are major threat to aquatic system?

Major threats to freshwater fishes and other freshwater biodiversity, include: habitat modification, fragmentation, and destruction; invasive species; overfishing; environmental pollution; forestry practise; and climate change.

What are the main threats to rivers and fish?

Water pollution

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Agricultural pollution is the biggest pollution threat to Fynbos Fish. In many instances, rivers and streams in the Western Cape are exceptionally pure, containing low levels of nutrients. Therefore, even a small increase in nutrients will throw the delicate ecosystem off-balance.

How are aquatic species affected by water pollution?

Ocean pollution comes in many forms, but the largest factor affecting the oceans is plastic. … Plastic kills fish, birds, marine mammals and sea turtles, destroys habitats and even affects animals’ mating rituals, which can have devastating consequences and can wipe out entire species.