BIOL 230 Study Guide - Midterm Guide: Ecological Niche, Species Richness, Biogeography

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3 Dec 2016

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Local scale: scale of an ecological community: single habitat, small enough so all species could potentially interact with each other (at least over a few generations), big enough to contain all species that exist in that habitat. Dispersal limitation: not all species in region can get to a location. Habitat limitation: not all species that can disperse to a location can survive the conditions. Biotic limitation: not all species that can disperse to a location can survive the interactions with each other. If dispersal limited # of species in a community, then # of species in a community would be: proportional to # of species in region. Dispe(cid:396)sal li(cid:373)itatio(cid:374) is (cid:862)(cid:272)o(cid:374)te(cid:374)t depe(cid:374)de(cid:374)t(cid:863): depe(cid:374)ds o(cid:374) t(cid:455)pe of (cid:272)o(cid:373)(cid:373)u(cid:374)it(cid:455) a(cid:374)d dispersal abilities of taxa considered: sometimes researchers accidentally use too big of an area for local richness or not accurately measuring regional richness. Dispersal limitation can be assessed through species invasions. Often leads to net increase of local diversity.

Related Questions

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

1. Honey bees engage in entomophily, pollinationthrough pollen distribution, as part of the process to producehoney. What is entomophily an example of?

Ecosystem

Niche

Community

Habitat

2. The organisms that represent the different species within anecosystem that interact in various ways, comprise a_______________

Population

Trophic level

Species

Community

Habitat

3. Inheritable mutations, which may allow a population toevolve, are produced

As a response to selection pressure

By chance

By natural selection

As a response to environmental pressure

By artificial selection

4. The ability of fireflies and angler fish to produce light isan example of convergent evolution. What can you conclude aboutthese two animals based on this information?

They share a recent common ancestor

The ability to produce light is an ancient trait

They are found in the same location

They are both adapted to environments which are low in light

All of the above

5. A zorse is the offspring produced through interbreedingbetween a horse and a zebra. Zorses are often preferred for ridingbecause of their physical shape, but they are sterile. According toLinnaean taxonomy, are zebras and horses classified in the samespecies?

Yes

Sometimes

Not enough information to determine

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BIOL 230 Study Guide - Midterm Guide: Ecological Niche, Species Richness, Biogeography

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