Lecture 4

Question 1

metapopulation?

Answer 1

group of populations separated by space but consists of the same species. they interact with one another as individuals move from population to population

Question 2

sinks?

Answer 2

populations that do not survive

Question 3

source?

Answer 3

populations that thrive and reproduce

Question 4

Jamaica Bay has no source of larvae input the only hope for JB is ?

Answer 4

to have a sustainable reproductive population that will exchange larvae with each other

Question 5

what are some problems jamaica bay faces?

Answer 5

short water residence time
low oxygen
1/100 chance of larvae settling just from mixing alone

Question 6

what are some solutions to sustain a reproductive population?

Answer 6

look for places where water movement is not so great
make sure there is a target for larvae to settle
suggestion of putting oyster shells 4ft or higher have greater success

Question 7

Tapanzee
affects of low salinity?
and positives of it ?

Answer 7

limited growth, winter mortality rates are high

on the positive side infection rates are low

Question 8

problems with high salinity?

postives of it

Answer 8

disease is high
optimum growth at higher salinity
mortality rate decreases and salinity increases