Biology 2483A Lecture Notes - Lecture 2: Brown Bear, Holocene Extinction, Vancouver Island Marmot

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10 Dec 2016

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Biodiversity = sum total of all organisms in an area ecosystem diversity, species diversity, and genetic diversity. Species = a population or group of populations whose members share characteristics and can freely breed with one another and produce fertile offspring. Population = a group of individuals of a species that live in the same area. Ecosystem diversity = the number and variety of ecosystems. Within an ecosystem (alberta), there can be many other ecosystems (alpine vs. base of the mountain) Species diversity = the number or variety of species in the world or in a particular region; components of it: individuals of different species are equal or skewed. Species richness = number of species found in a particular ecosystem. Evenness/relative abundance = extent to which numbers of. In the diagram on top richness = 2 (two different types); similar evenness of 1, same number of species 1 and species 2. Bottom left richness = 4; evenness is even = 1.

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

Question 13

Species that are purposely or accidentally introduced to a new geographical region

Answers:	frequently form hybrids with native species
	die out quickly
	can become serious pests by killing the native species
	experience increased mutation rates that help them adapt to the new ecosystem

______________

Match the following terms with correct definition.

Question
biome
population
ecosystem
community

All Answer Choices
A. all of the individuals of a species in a specific area
B. comprises all of the biotic and abiotic factors in a particular area
C. interacting species occupying a given habitat
D. large scale interactions of species defined on land by the type primary type of vegetation

_______________

Question 24

Which of the following is an example of a species distributed in a random distribution?

Answers:

oak trees that drop their seeds to the ground

a herd of elephants traveling to the watering hole

dandelion seeds that are blowing in the wind

nesting penguins

________________

Question 33

________

Which of the following is a threat to biodiversity?

Answers:

habitat loss

overharvesting

climate change

all of the above

_____________

Some theories around why more diversity in species or areas known as [a___________] are found near the [b_______] are: more energy or greater [c_____] of the ecosystems, giving the opportunity for more [d________].

Answers:

age

speciation

equator

size

hotspots

evolution

Question 5

The majority of water found on Earth is

Answers:	salt
	fresh water
	ice
	water vapor

____________

Question 13

Species that are purposely or accidentally introduced to a new geographical region

Answers:	frequently form hybrids with native species
	die out quickly
	can become serious pests by killing the native species
	experience increased mutation rates that help them adapt to the new ecosystem

______________

Match the following terms with correct definition.

Question
biome
population
ecosystem
community

All Answer Choices
A. all of the individuals of a species in a specific area
B. comprises all of the biotic and abiotic factors in a particular area
C. interacting species occupying a given habitat
D. large scale interactions of species defined on land by the type primary type of vegetation

_______________

Question 24

Which of the following is an example of a species distributed in a random distribution?

Answers:

oak trees that drop their seeds to the ground

a herd of elephants traveling to the watering hole

dandelion seeds that are blowing in the wind

nesting penguins

________________

Question 33

________

Which of the following is a threat to biodiversity?

Answers:

habitat loss

overharvesting

climate change

all of the above

_____________

Some theories around why more diversity in species or areas known as [a] are found near the [b] are: more energy or greater [c] of the ecosystems, giving the opportunity for more [d].

Answers:

age

speciation

equator

size

hotspots

evolution

Biology 2483A Lecture Notes - Lecture 2: Brown Bear, Holocene Extinction, Vancouver Island Marmot

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