lecture 5 - competition and predation Flashcards Preview

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Flashcards in lecture 5 - competition and predation Deck (10)
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1
Q

definition of scramble competition

A

a situation in which a resource is available to all competitors

2
Q

definition of contest competition

A

competition for a resource that is partitioned unequally, so that some competitors obtain all that they need and others obtain less than they need

3
Q

definition of diet width

A

the range of food types consumed by a predator

4
Q

when should an animal add a new item to its diet

A

when the profit of that new prey is larger than the cost of ignoring new prey and searching for another of the most profitable

5
Q

definition of random foraging

A

animals eat items in proportion to what is available

6
Q

definition of non - random foraging

A

animals eat the most profitable items even though they are not the most common

7
Q

what are the constraints of maximising profitability in foraging

A

search time and handling time

8
Q

what is a functional response?

A

the intake rate of a consumer as a function of food density

9
Q

what is the type 1 functional response?

A

it assumes a linear rate of increase - assumes that consuming food does not interfere with searching for food

10
Q

what is the type 2 functional response?

A

most common - decelerating intake rate - consumer is limited by its capacity to process food