Term
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Definition
| social system: offspring receive care from their parents plus additional non-breeding group members |
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Term
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Definition
(direct fitness plus indirect fitness)
-Total effect an ind. has on proliferating its genes via own offspring and helping close relatives |
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Term
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Definition
| benefits that improve the reproductive success of the actor |
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Term
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Definition
| benefits that improve the reproductive output of closely-related individuals |
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Term
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Definition
-Poor conditions/low food supply
-lack of good places to burrow/nest
-lack of suitable partners |
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Term
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Definition
| Defense, hunting, survival in harsh conditions, home building, dilution of losses |
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Term
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Definition
| Fight for dominance, increased parasitism, visibility to predators |
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Term
| Pop. growth without limits |
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Definition
-Exponential: pop. reproduce continually dN/dt= rN
-Geometric: pop. have no overlap in reproduction |
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Term
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Definition
dN/dt= rN(1-N/K)
- r decreases as N increases
- If N=K, r=0, pop growth stops |
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Term
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Definition
-Competition for food, space, mates
-predation
-disease, parasites, waste accumulation |
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Term
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Definition
| -as pop size decreases, r also decreases (inverse density dependence) |
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Term
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Definition
-Sets of spatially isolated populations are linked by dispersal
-Characterized by repeated extinctions and colonization |
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Term
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Definition
-Source populations exist in high quality patches with births>deaths
-Sink is low quality patch with deaths>births |
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Term
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Definition
| High rates of immigration that protect a pop from extinction |
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Term
| Demography Fundamental Parameters |
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Definition
-pop size and density
-Fecundity and mortality
-Age structure
-Sex ratio |
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Term
| Cohort (dynamic) life table |
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Definition
| Follows the fate of a group of individuals all born at the same time(a cohort) |
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Term
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Definition
| Number alive at start of an age interval or stage |
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Term
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Definition
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Term
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Definition
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Term
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Definition
-Type 1: low death rate
-Type 2: mod. death rate
-Type 3: High death rate |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
-Survival and mortality rates
-Amount and timing or reproduction
-Age and size of adult at maturity |
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Term
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Definition
| -Deterioration with age/decline in physiological function |
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Term
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Definition
| Potential env conditions tolerated by a species |
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Term
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Definition
| Conditions of env where species is actually found |
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Term
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Definition
| Production of chemicals by plants that inhibit growth of neighboring plants |
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Term
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Definition
| Aggressive behavioral exclusion of organisms from specific units of defended space |
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Term
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Definition
| When a physical resource is occupied by one organism and therefore unavailable to others |
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Term
| Intra vs interspecific competition |
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Definition
| competition for resources among individuals of the same species vs different species |
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Term
| a (competition coefficient) |
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Definition
| Per capita effect of one species on the pop. growth of another species |
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Term
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Definition
| Comp. coefficient x # of individuals |
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Term
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Definition
| Differences among similar species are accentuated where the species co-occur, but are minimized where they don't |
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