Interactions In Ecological Communities

Question 1

what is a association of interacting populations called?
-interactions can occur between _____ pop or _______ pops and drive ____ _______ (what is it)
-what are the 3 relationship types

Answer 1

-ecological community
-same, different. population dynamics (changes occuring over populations over time)
1. producer-consumer
2. symbitoic
3. community change

Question 2

1. producer consumer relation
   -there is ______ pressure on both partners
   -what do sucsesful consumers drive
   -what happens when producers are limited
   -what cycles result from predator-pray interactions
   -they __________ together, do they at the same time though?

Answer 2

-selective
-drive natural selection of producers making them hard to catch in the future
-consumers also die
-boom/bust
-coevolve, not at the same time but at different periods

Question 3

What are defense mechanisms used for

Answer 3

reducing risk of predation/death from others

Question 4

2. symbiotic relationships
   -what is it
   -what are the 3 forms

Answer 4

-relation between individuals in different species that live together
1. mutualism- both benifit
2. commensalism- one benifits other is neutral
3. parasitism- one benifits other is harmed

Question 5

3.Sucsesstion: community change
-what is sucsession, and what factors drive it
-primary succession
-what is the first species that colonizes an area called
-what are the latecomer species called
-secondary sucsession

Answer 5

-slow change in community over time
-occurs in a place where no life has occured before
-pioneer community
-climax community
-recolonization of an area that underwent ecological disturbance