BIOB50H3 Lecture Notes - Lecture 5: Transect, Adaptive Radiation, Zygote

70 views10 pages

champagnewoodchuck203

8 Sep 2017

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Population size number of individuals in population. Population abundance number of individuals in a given area. Abundance is a function of two factors: population density number of individuals per unit area, population distribution area over which a population occurs. Population size vs. population density: e. g. on a 20-hectare island, there are 2,500 lizards, population size is 2500 if they are unitary individuals, population density is 125/hectare. Factors that limit distribution and abundance: habitat suitability. Abiotic and biotic factors can be limiting factors. Interaction between abiotic and biotic can also occur. E. g. abundance in a round place is usually highest in the centre because most resources. E. g. barnacle distribution temperature and competition limits distribution: historical factors. Dispersal limitation can prevent organisms from reaching areas of suitable habitat e. g. polar bears can"t go from north poles to south poles. Dispersal can impact population density, but population density can impact dispersal as well.

Related Questions

Factors whose impact on a population increases as population size increases are known as: a. Limiting factors b. Life-history factors c. Distribution factors d. Density-dependent factors 7. Deer mice are a species with individuals who live short lives and grow up rapidly. They have many, small offspring to which they give little parental care. This life-history strategy describes: a. r-selected species b. K-selected species 8. Which type of species is more likely to have its population size remain close to carrying capacity under normal conditions, rather than going through boom and bust cycles? a. density-dependent species b. r-species c. K-species d. prey species 9. In top-down regulation, the size of a rabbit population is determined by: a. The number of foxes and coyotes in the area b. The severity of winter c. The amount of food found in their habitat d. The biotic potential of female rabbits 10. In the Yellowstone ecosystem, what regulates the size of the elk populations? a. Bottom-up regulation factors b. Top-down regulation factors c. In some cases it is bottom-up and in other cases it is top-down regulation. d. Neither one have a significant impact on elk population size.

ultramarinetermite85

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

BIOB50H3 Lecture Notes - Lecture 5: Transect, Adaptive Radiation, Zygote

Document Summary

Get access

Related Documents

BIOB50H3 Lecture 4: 7

BIOB50H3 Lecture Notes - Lecture 5: Marsupial, Transect, Extinction Vortex

BIOB50H3 Chapter Notes - Chapter 9: Continental Drift, Ecological Niche, Transect

Related Questions