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Definition
| Is a group of potentially interbreeding organisms of the same species existing in the same place at the same time. |
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Definition
| a group of subpopulations linked by infrequent dispersal. |
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| Round-trip (often seasonal). Europeans use the word disperal? |
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Definition
| The range of physical conditions over which a species can persist. |
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Definition
| Distribution of a species is limited within the range of physical conditions by predators, pathogens, and competitors. |
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| Patterns of Dispersion and their general interactions: |
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Definition
Uniform:
Each organism is around the same distance away from one another. This has interaction among indviduals mostly competitive interactions.
Random:
Requires a homogeneous environment, the interactions are not strong.
Clumped:
This is the most common type of dispersion. Heterogeneous resources, social interactions, generally mutual. |
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| Mark-recapture variables: |
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Definition
N hat= estimated number in population
n= number sampled when you recapture.
M= number marked.
R= number recaptured. |
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Definition
| r= intrinsic rate of increase (birth rate- death rate). |
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Term
| Cohort(dynamic) vs Time Specific (static life) |
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Definition
Cohort: follow a group from birth to death.
Time= Look at the distribution of age class in a population at one time. Assumes constant rates of birth and death. |
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Term
life table calculations and variables:
surviorship (lx)
survival rate (sx)
Mortalty rate (mx) |
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Definition
lx (survivorship)= current amount alive / original amount. survivorship should always be 1.000 for the first age.
(sx) survival rate= future amount alive/ amount alive.
(mx) mortality rate- 1-survival rate. |
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| net reproductive rate formula: |
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Definition
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| Assumptions of continuous logistic growth model: |
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Definition
Just density-depence factors, no DI
K and r constant
all individuals identical
all individuals respond to changes in enviroment instantaneously. |
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Term
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Definition
overlap gen: use the formula with the + sign
non overlap, no + sign. |
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