EEB202H1 Midterm: EEBTEST 2 REVIEW.doc

72 views10 pages

silverserval966

13 Apr 2012

School

UTSG

Department

Ecology & Evolutionary Biology

Course

EEB202H1

Professor

C.Wittnich

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

Biodiversity: the variability among living organisms from all sources including among others, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part. Conservation of any species is highly complicated and includes factors such as its abundance, rate of reproduc- Tion, extinction rate, natural disasters, mankind"s influence, etc. ex. global warming -> melting arctic ice recedes away from land -> polar bears swim further to hunt -> unable to properly feed cubs. --- estimated that polar bears will become extinct within next 100 years or sooner. Reasons why numerous species of marine mammals have become threatened or near extinction: a) b) c) d) Slow reproduction rate: at most only one offspring per year --> difficult to increase pop. size. Slow population growth: maturing rate of killer whale is 12 years old. Returning to same geographic region to feed or breed --> easy to capture and exploit.

Related Questions

Match the term with the correct description.

Locavore

Genetic diversity

Species diversity

Ecological diversity

Reproductive isolation

Biodiversity hotspots

Natural extinction

Endangered

Threatened

Vulnerable

a.	Measures richness and complexity of a community
b.	Those that are naturally rare or have been locally depleted to a level that puts them at risk
c.	Measures variety of different versions of same genes within a species
d.	In undisturbed ecosystems, the background rate appears to be one species per decade
e.	Those likely to become endangered, at least locally, in the near future
f.	Organisms that breed in nature and produce fertile offspring
g.	Contain 75% of the worldâs most threatened mammals, birds, and amphibians
h.	A person who eats locally grown, seasonal food
i.	Considered to be in imminent danger of extinction
j.	Measures number of different kinds of organisms within a community

a. Describe why preventing extinction is at the heart of biodiversity conservation.

b. Describe how extinctions of bird species compares to extinctions of other species.

c,Describe what makes a species more likely to become extinct.

carminerhinoceros477

A geographical area that contains high numbers of endemic species is known as a(n) _________.

Select one:

a. habitat heterogeneity

b. species-area relationship

c. tragedy of the commons

d. biodiversity hotspot

e. ecosystem diversity

Why do we need a seed vault located in an arctic climate?

Select one:

a. In case other food sources become extinct.

b. So that crops can be grown in built environments and better controlled.

c. To store a variety of seeds as a way of maintaining crop diversity.

d. To store seeds from only certain places in the world that are more hearty and better producers.

e. The arctic climate will kill any insect pest that might threaten crops.

EEB202H1 Midterm: EEBTEST 2 REVIEW.doc

Document Summary

Get access

Related Documents

GEOG 102 Lecture Notes - Lecture 23: Green Economy, Marine Mammal, Genetic Diversity

GEOG M109 Lecture Notes - Lecture 8: Ecosystem Diversity, Genetic Diversity, Habitat Destruction

Environmental Science 1021F/G Lecture Notes - Lecture 3: Ecosystem Diversity, Reproductive Isolation, Species Richness

Related Questions