Exam 2 Lecture 13/14.5

Question 1

Island equillibrium model

Answer 1

If an island is bigger, it should have:
-More species
-Higher immigration rate
-More resources
-More survival

-An island closer to the mainland has more species

Question 2

Interspeific interactions

Answer 2

-Predation (+/-)
-Mutualism (+/+)
-Parasitism/disease (+/-)
-Commensalism (+/o)
-Herbivory (+/-) can be (+/+)

Question 3

Beneficial traits of predator and prey

Answer 3

-Weapons(specalized structures)
-Camouflage
-Size
-Strength
-Speed
-Intelligence
-Social (saftey in numbers)

Question 4

Trophic levels

Answer 4

-Position organisms occupy in food chain

-Primary producers
-Primary consumers
-Secondary consumers
-Tertiary consumers
-Quaternary consumers

Question 5

Dominant species

Answer 5

-Very large biomass (shrimp)

Question 6

Keystone species

Answer 6

-Higher trophic level that abundance influences the food chain below them
-Pivitol role in community

Question 7

Bottom up control

Answer 7

-Associated with dominant species
-When they become scarce, it affects above them
-Makes top scarce

Question 8

Top down control

Answer 8

-Associated with keystone species
-When they become scarce, it affects below them
-Makes below more abundant