Exam 13: Sustaining Aquatic Biodiversity

Proponents of whaling say that people in one country have no right to tell people in another country not to eat whales.

What contributed to the decline of Canada's west coast salmon populations? 

East Africa's Lake Victoria declined in biodiversity due to the introduction of the Nile perch.

What is the greatest problem of Lake Nipissing and many other inland lakes in Canada? 

How many of the world's 651 biosphere reserves include coastal or marine habitats? 

____________________ whales are filter feeders.

Asian carp have escaped from ____________________ aquaculture sites and at least two species are headed toward the Great Lakes.

Which of the following is better than the current way to manage the aquaculture industry? 

Over half of all fish species live in marine systems.

Some people suggest that _________________________ and escapees from Canadian salmon farming operations are negatively affecting stocks of wild salmon.

Which of the following is NOT a likely cause for species loss in marine ecosystems? 

____________________ are used to prevent turtles from becoming caught by U.S.shrimp trawling boats.

Which ocean region has the most biodiversity? 

Algal blooms in east Africa's Lake Victoria led to the water becoming turbid which in turn created poor conditions for the mating of cichlids.

More than half of the world's virgin mangrove forest swamps have disappeared.

One reason for the decline in Canada's salmon stocks is that salmon fishing has ____________________ dimensions.

Almost one-third of the global annual fish catch,from all sources,is thrown overboard.

What has had massive destructive effects on ocean floor ecosystems? 

What ecological services do wetlands provide?

What percent of wetlands have been lost in southern Ontario?