Exam 11: Sustaining Aquatic Biodiversity

There is growing evidence that the current harmful effects of human activities on aquatic biodiversity and ecosystem services could be reversed over the next ____.

Salmon populations in the Columbia River have increased by 35% since the dam system was put in place.

_______________ is an invasive species along the east coast of North America that was probably released from outdoor aquariums damaged by Hurricane Andrew in 1992.

In 2011,an international panel of scientists concluded that because of a combination of habitat loss,overfishing,pollution,and ocean acidification,marine life is poised to enter a new period of ____.

Ocean pollution from plastic items dumped from ships and garbage barges,and left as litter on beaches,kills up to ____ sea birds each year.

Respond to E.O.Wilson's proposed priorities for protecting the world's remaining ecosystems and species.Do they seem appropriate and possible? Should they be put in place? Who should be in charge of seeing they come to pass?

One result of the increasingly efficient global hunt for fish is that larger individuals of commercially valuable wild species are ____.

Invasive species are blamed for about ____________________ of fish extinctions in the United States since 1900.

Biodiversity is higher in the surface region of the ocean rather than in the bottom region of the ocean.

As a result of changes in and around the Everglades,it is now less than __________ its original size and much of it has dried out.

One invader that particularly worries scientists and fishers on the east coast of North America is a species of ____ native to the western Pacific Ocean.

The Columbia River dam system has benefited many people,but it has ____.

The ____________________ system includes coastal communities and the government working together to manage fisheries.

A concentration of a particular wild aquatic species suitable for commercial harvesting in a given ocean area or inland body of water is called a ____.

The excessive turbidity,or cloudiness,of Lake Wingra in Madison,Wisconsin,was caused by the introduction of which of the following?

Consumers have a role to play in sustaining aquatic biodiversity by demanding ____________________.

Approximately 99.2% of the world's oceans are not effectively protected from harmful human activities.

Rising sea levels from projected climate change luckily will not disrupt sea turtles because they are aquatic species.

HIPPCO is an acronym that aids in remembering ____.

Governments around the world give a total of more than $30 billion per year in subsidies to fishers,which partly contributes to overfishing.