Population dynamics

Question 1

population dynamics

Answer 1

how a population changes overtime

Question 2

minimum viable population

Answer 2

how many individuals a population needs to survive

Question 3

random distribution

Answer 3

neutral interactions, randomly placed

Question 4

regular distribution

Answer 4

regularly spaced, sustainable resources

Question 5

clumped distribution

Answer 5

come together for mating

Question 6

closed system

Answer 6

no additional food/migration/predation, exponential growth then stationary phase then decline

Question 7

what’s stationary phase

Answer 7

where births/deaths equal

Question 8

what’s open system

Answer 8

additional food/migration/predation, has carrying capacity

Question 9

oligotrophic

Answer 9

limited by certain resources

Question 10

what’s biomass and the biomass model

Answer 10

harvested species, influenced by recruitment/growth/mortality

Question 11

factors influencing biomass model

Answer 11

fish genetics/behaviour/food

Question 12

recruitment

Answer 12

recruits young, influenced by food/predation, density dependant

Question 13

growth

Answer 13

influenced by mortality, critical to stocks

Question 14

mortality

Answer 14

influenced by diseases/predation, expressed as rate

Question 15

who’s at most predation risk

Answer 15

juveniles

Question 16

what causes dispersal

Answer 16

currents, disperse for food, climate change

Question 17

populations most likely to go extinct are…

Answer 17

large populations, populations with large geographic range, populations with large habitat tolerances

Question 18

extinctions happen that we don’t know about happen because

Answer 18

of not knowing species/broad geographic bias

Question 19

sea cow

Answer 19

sea cows went extinct because of poaching of otters dying that ate urchins that ate kelp that was sea cows food