Which factor does not affect species richness on islands?

Age of island
Geographical location
Habitat size
Island shape
Question 2(Multiple Choice Worth 3 points)

(02.02 MC)

Which combination of factors will result in an island community with the lowest ecological tolerance?

Upwelling of colder ocean water, increased sunlight
Introduction of invasive species, increased freshwater sources
Increased human population, increased agricultural expansion
Increased colonization, decreased extinction rate
Question 3(Multiple Choice Worth 3 points)

(02.02 MC)

The table depicts characteristics of five amphibian species (A–E). Use the information in the table to answer the following question:


Ecological Parameter Species A Species B Species C Species D Species E
Temperature Range 15–30 °C 10–40 °C 15–20 °C 10–30 °C 15–25 °C
Freshwater or Brackish Water Fresh/brackish Brackish Brackish Fresh Fresh/brackish
Food Sources Varied Two mainland species of grasshopper Only island arthropods Varied Varied
Habitat Lakes Estuaries/ponds Estuaries/ponds Lakes Lakes


Which individual(s) of the species listed in the table would likely die if moved to a new island habitat?
Species C and E
Species A and C
Species A only
Species B only
Question 4(Multiple Choice Worth 3 points)

(02.02 LC)

Island biogeography studies the ________ on islands.

mountain topography
natural disasters
distribution of species
climate change
Question 5(Multiple Choice Worth 3 points)

(02.02 MC)

Increased deforestation reduces the habitat for an arthropod species preferred by an island reptile. Which of the following descriptions predicts the most likely outcome for these two species?

The reptile population increases as arthropods are confined to smaller sections of the island.
The reptile population decreases as arthropods decrease with their habitat.
Island arthropods decrease as the reptile population increases.
Island arthropods and reptiles both increase in the island habitat.
Question 6(Multiple Choice Worth 3 points)

(02.02 MC)

Which statement describes a factor in the island biogeographical model?

Dispersing species are more likely to find smaller secluded habitats
Smaller populations are less likely to go extinct
Large islands have less available niches for immigrating species
Islands closer to the mainland have greater colonization
Question 7(Multiple Choice Worth 3 points)

(02.02 LC)

Which of the following ideas helps explain the factors that affect island colonization of and species richness for a region?


Species-area effect
Rescue effect
Target effect
Time/stability hypothesis
I and II
II and III
I, II, IV
I, II, III, IV