ecology unit 3 tophat ?s

Rank the areas in terms of their productivity, from greatest to least: A. Tropical forests B. Boreal Forests C. Desert D. Temperate forests

A --> D --> B --> C

Which of the following (if any) correctly describes the role of disturbance in regulating diversity? A. A low disturbance frequency will reduce diversity by allowing dominant competitors to exclude other species B. A moderate disturbance frequency will allow both r- and K- selected species to coexist C. A high disturbance frequency will increase diversity by reducing habitat occupancy and preventing competition

A, B

Which of the following DO NOT explain broad (global) patterns of terrestrial productivity? A. Light B. Rainfall C. Temperature D. Nutrients

A, D * key is broad

Which of the following constitute islands as we have defined them? A. A patch of land in the ocean B. A forest in the middle of a city C. A patch of coral in the middle of a sea grass meadow D. A lake

A,B,C,D

Which of the following processes influence local species diversity? Check all that apply: A. Evolution and historical factors B. Habitat diversity C. Dispersal D. The extent of resource partitioning

A,B,C,D

Which of these factors are important in the carbon cycle? Check all that apply: A. Decomposition B. Volcanic activity C. Fixation by bacterial species D. Photosynthesis

A,B,D

Which of the following will increase species diversity, all else being equal: A. Increasing resource range B. Increasing niche breadth C. Increasing niche overlap D. Increasing environmental harshness

A,C

Which of the following are true about the euphotic zone? A. It extends to the depth where Net Primary Productivity = 0 B. It is largest where aquatic/ocean productivity is the greatest C. It is large in the open ocean and smaller closer to shore (like in estuaries) D. It reflects how far light penetrates into the water

A,C,D

Where do we commonly find nitrifying bacteria? Check all that apply: A. In the soil B. In Chuck Norris C. On the roots of plants D. In lakes and rivers

A,D

Which factors determine global patterns of marine productivity? A. Temperature B. Light C. Carbon D. Nutrients

B,D

The factors that affect species diversity (in order) are: A. Abiotic factors, abundance, species interactions B. Dispersal, abiotic factors, abundance C. Species interactions, abiotic factors, resource range D. Dispersal, abiotic factors, niche overlap E. None of the above

E

Which of these hypotheses might explain (or are consistent with) the global pattern of high tropical diversity?

Evolutionary history, Harsh environments reduce diversity, Productivity enhances diversity, Temporal stability enhances diversity, Spatial heterogeneity enhances diversity, Disturbance, Keystone predation