competition + niches

Question 1

community

Answer 1

assemblage of pops. in given area

Question 2

types of ecological interactions

Answer 2

neutral, competition, herbivory, predation, parasitism, disease, mutualism, commensalism.

Question 3

modes of competition

Answer 3

contest, resource, intraspecific, interspecific.

Question 4

contest competition

Answer 4

direct aggressive interaction. winner gets “fill portion,” loser gets little to none.

Question 5

resource competition

Answer 5

indirect interactions using a common resource. if one uses more, less availability for others, equal suffering.

Question 6

intraspecific competition

Answer 6

amongst members of same spp. affects only the pop. in question.

Question 7

interspecific competition

Answer 7

among individs. of diff. spp., with similar resource requirements. affects all pops. involved.

Question 8

what do all competition types have in common?

Answer 8

reduced fitness for all (lose-lose game)

Question 9

restrictions in intraspecific

Answer 9

pop. growth, individ. growth, tendencies of self-thinning. (successful grow, unsuccessful die off)

Question 10

principle of competitive exclusion

Answer 10

interspecific competition affects spp. w overlapping niches

Question 11

what are niches?

Answer 11

env. factors influencing growth, survival + reproduction of spp.

Question 12

also, what is a niche?

Answer 12

an n-dimensional hyper-volume

Question 13

what factors affect performance + survival?

Answer 13

temp., pH, nutrient availability, food types + sizes

Question 14

fundamental niche

Answer 14

describes full range of conditions a spp. uses

Question 15

realized niche

Answer 15

smaller than fundamental. restricted by biotic community.