Chapter 57-Interspecific Interactions and the Ecology of Communities

Question 1

Community

Answer 1

all populations in a specific area

Question 2

Niche

Answer 2

• the total of all the ways an organism uses the resources of its environment
• space utilization, nutrient consumption,, temp. range, appropriate conditions for mating

Question 3

Fundamental niche

Answer 3

-entire niche that a species is CAPABLE of using, based on physiological limits and resource needs

Question 4

Realized niche

Answer 4

-actual set of environmental conditions, presence or absence of other species, in which the species can establish a stable pop.

Question 5

Interspecific competition

Answer 5

occurs when two species attempt to use the same resource and there is not enough resource to satisfy both

Question 6

exploitative competition

Answer 6

-when two or more species compete for the same limited resources, the species that uses the resources more efficiently will eventually eliminate the other species locally

Question 7

Keystone species

Answer 7

• species whose effects on the composition off communities are greater than one might expect based on abundance
• can manipulate the environment in ways that create new habitats for other species

Question 8

Succession

Answer 8

change in community composition over time

• have tendency to change from simple to complex
• happens because species alter the habitat at the resources available in ways that favor other species entering the habitat

Question 9

Climax community

Answer 9

• best adapted organism to environment

- environment doesnt change much after, may take thousands of years