Marine Conservation Principles

Question 1

Give some examples of land-based impacts of marine ecosystems

Answer 1

Coastal development

Habitat destruction

Question 2

How much of the world population lives within 100km of the coast?

Answer 2

40%

Question 3

What percentage of mangroves were lost between 1980 and 2005?

Answer 3

20%

Question 4

How much has seagrass declined since 1879?

Answer 4

29%

Question 5

How much of the US coastline has been armoured?

Answer 5

14%

Question 6

Give some examples of commercial activity that can threaten marine ecosystems

Answer 6

Oil rigs

Gas

Offshore renewables

Communication pipelines

Shipping (these can be through direct impacts, invasive species and pollution)

Question 7

Which ocean is warming the most?

Answer 7

Arctic ocean

Question 8

What is the general trend for plankton?

Answer 8

Decreasing

Question 9

What are north sea fish doing to combat increasing sea temperatures?

Answer 9

Going deeper

Question 10

What causes coral bleaching?

Answer 10

Algal symbionts are shed at increased temperatures

Question 11

How much of the annual anthropogenic CO2 emissions are absorbed into the ocean?

Answer 11

25%