Flashcard Set Preview
| Side A | Side B | ||
| 1 |
What is the Equilibrium Theory of Island Biogeography (MacArthur and Wilson 1967)?
(The #...
|
1) regional processes that govern immigration (from mainland)
2) local processes that govern...
|
|
| 2 |
What 2 things does more species mean?
|
* less immigration of new spp.
* more extinction (random + due to competition)
|
|
| 3 |
Why are the functions curved on the island biogeography graph?
|
* better colonists arrive first: immigration decreases faster with increasing diversity
*...
|
|
| 4 |
Species turnover (where curves cross means...)
|
equilibrium of spp takes place
* extinction = immigration
|
|
| 5 |
What is immigration and extinction a function of?
|
* size of the island
* distance from mainland
|
|
| 6 |
What happens on large islands?
|
more immigration and less extinction
|
|
| 7 |
What about islands closer to the mainland?
|
more immigration
|
|
| 8 |
The theory is a powerful predictor of _____.
|
island diversity
|
|
| 9 |
What inland areas can be thought of as islands? Why would conservationists think this...
|
forest fragments and nature preserves (islated patches connected by migration)
* can apply...
|
|
| 10 |
What 3 things do we consider when looking at a population?
|
* geographic distribution
* population size (abundance)
* spatial pattern of distribution
|
|
| 11 |
What questions do we ask about geographic distribution?
|
where?
how wide ranging?
|
|
| 12 |
What is the geographic distribution determined by?
|
- tolerance to abiotic and biotic conditions
- vagility
- biogeography
|
|
| 13 |
What about climate and geographic distribution?
can be ____ or ____
|
direct or indirect
* climate can affect: availability of food, water, shelter etc., presence...
|
|
| 14 |
What happens when barnacles (Chthalamus) which survive on the upper part of rocks in the low...
|
they survive fine, but can not compete with barnacles that already live there (Balanus)
*...
|
|
| 15 |
Random spatial distribution
|
individuals at sites unrelated to where others occur
|
|
| 16 |
What sort of interactions at random?
|
neutral: between individuals; individual-environment
|
|
| 17 |
Clumped spatial distribution
Interactions?
|
individuals closer than at random
attraction: btw individuals; individual-resources
|
|
| 18 |
Uniform spatial distribution
Interactions?
|
individuals farther than at random
antagonistic interactions: btw individuals, resource depletion
|
|
| 19 |
What does spatial distribution look like for aggressive and non-aggressive bee populations?
|
agg: antagonist interactions. uniform
non-agg: neutral interactions, random
|
|
| 20 |
Spatial distribution is ___ dependent.
|
scale (spatially and temporally)
|
|
| 21 |
How does distribution look different on a large and small scale?
|
large: clumped
small: random, uniform, clumped
|
|
| 22 |
What does the variation in # of individuals among sites look like?
What is this called?
|
most sites: few individuals
a few sites: most of individuals
"negative exponential distribution"
|
|
| 23 |
What is the relationship btw the size of the animal and population size?
|
larger orgs seem to have smaller pops
smaller orgs tend to have larger pops
|
|
| 24 |
As far as:
1) geographic range
2) habitat tolerance
3) local population size
what is the riskiest...
|
1) restricted
2) narrow
3) small
|
|
| 25 |
Safest?
|
1) extensive
2) broad
3) large
|
|
| 26 |
Out of the 8 possibilities of these different characteristics, how many have an element of...
|
7
|
No comments yet! Be the first to add a comment below!
Please login to post comments.
After login, we will forward you back to this flashcard.