lecture 2 - coping w EV

Question 1

what is species distributions determined by

Answer 1

availability of energy and resources
environmental conditions
biotic interactions

Question 2

when are species most abundant

Answer 2

when there is best set of environmental characteristics for them
when environmental values are at optimal value for the environmental gradient

Question 3

what are the organismal responses to stress

Answer 3

acclimatization, adaptation

Question 3

why is actual distribution different than potential distribution

Answer 3

environmental factors, other present species, other biotic interactions

Question 4

responses to cold temperatures

Answer 4

avoidance behaviour, tolerance to freezingh

Question 5

how do tropical and arctic lower critical temperatures compare

Answer 5

tropical LCT is higher
arctic LCT is lower

Question 6

how would an animal change its behaviour to cool down

Answer 6

reducing movement
drinking water for species that sweat
hyperventilating
bathing in mud
moving to higher altitudes