Exam 7: Aquatic Biodiversity

In the summer in many temperate lakes,the ________________________ separates the epilimnion from the hypolimnion.

ZONES -Which letter in the diagram corresponds to the zone that contains the majority of all marine species?

What are some limiting factors of the surface layer of the open sea?

LAND ZONES -Which letter in the diagram corresponds to the zone containing rivers that have the largest population of primary producers?

A major group of marine organisms that live on the bottom of the ocean are called nekton.

What is the result of a lake "turnover"? 

In which areas of Canada are freshwater inland wetlands at greatest risk of being lost due to human-related activities? 

In which zone does most of the photosynthesis in the open sea occur? 

The area of shoreline between low and high tides is called the ____________________ zone.

The aquatic equivalent of terrestrial biomes are called aquatic life zones.

During which season would an ecologist expect to find a thermocline in a temperate lake? 

What is an advantage for populations of organisms living in water? 

What percentage of the world's freshwater supply is located in Canada? 

What is most threatening to the survival of coral reefs? 

Currently,about _________________________ of the world's population live along coasts or within 100 kilometres of a coast.

What would be a result of building a dam in the transition zone of a river? 

What is a characteristic of the floodplain zone of a river? 

What best describes most food chains and webs in aquatic life zones when compared to those in terrestrial biomes? 

Which characteristic would a marine organism that lives in the intertidal zone on a barrier beach possess? 

Which trees are characteristic of a tropical coastal wetland?