There is a large forested area that is divided into two sections of equal area.

Question

There is a large forested area that is divided into two sections of equal area. One section was never logged, but the other section is logged resulting in 4 forest patches (labeled A-D). Green indicates forest and white indicates logging. A small road is cut between the two forests. Use this information NTACT FOREST NEVER LOGGED and the figure to the right to answer the next 2 questions 14. How will the species richness of forest dependent species change in the logged patch before and after logging? A) Species richness is the same before the logging as afterwards B) Species richness is reduced after the logging due to the reduction in habitat area. C) Species richness increases after the logging due to an increase in habitat area. D) Species richness in the fragmented patches will be higher than in the intact forest 15. Of the patches in the logged forest, which patch will have the greatest number of forest dependent species, after logging is complete? A) A B) B C) C D) D 16. Imagine a new volcanic island has been formed in the middle of the ocean, far from any other land-masses. Which of the following traits are likely to be found in the initial pioneer species that initiate primary succession? Select ALL that apply. A) Strong dispersal ability B) Requires an obligate mutualist C) Reproduces quickly D) Strong competitor E) High fecundity 17. Cane toads have toxins in their skins that can kill potential predators. Their predators, like caimans - a type of crocodile, are able to tolerate the toxin. Over time, assuming the cane toads and their predators are in a coevolutionary arms race, then A) the cane toad can be expected to go extinct. B) the cane toad can be expected to disperse to new habitats C) the cane toad can be expected to become even more toxic. D) the cane toad can be expected to colonize new habitats E the cane toad can be expected to outcompete all other toads in the same environment.

Explanation / Answer

14. Species richness is reduced after logginf due to reduction in habitat area.
15. A
16. Obligae mutualist
Reproduces quickly
High fecundity

17. the cane toad can be expected to become even more toxic.

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