Ecology Flashcards

(33 cards)

1
Q

Ecolgical niche

A

Gap in a food web which could be filled by another species

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2
Q

Demes

A

Population isolated by geographical area, cant breed or mingle with other populations (king cheetah)

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3
Q

Scales

A

The measurement of how you would measure a fluctuations

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4
Q

Population shift

A

A change in the numbers of different groups of individuals

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5
Q

Drought

A

Prolonged dry period in which there is a lack of water and rainfall

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6
Q

Famine

A

Lack of food resources

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7
Q

Speciation

A

The formation of a new species through evolution

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8
Q

Individual

A

Looking at a specific individual within a population

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9
Q

Species

A

A group of living organisms consisting of similar individuals

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10
Q

Dissolution

A

Dissolving of a population

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11
Q

Fecundity

A

The ability to produce an abundance of offspring or new growth

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12
Q

Natility

A

The rariom of the number of births to the size of population; birth rates

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13
Q

Genetic variability

A

Measure of the trend of individual genotypes in a population to vary from one another

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14
Q

Continuity of time

A

As species evolve certain traits are changed while other traits are retainer over time

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15
Q

Dispersal

A

The action or process of distributing things or people over a wide area

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16
Q

Metapopulation

A

A regional group of connect populations of a species

17
Q

Stochastic

A

Predictable changes

18
Q

Mortality

19
Q

Growth

A

The process of increasing in size

20
Q

Migration

A

Movement of a species over some distance

21
Q

Emerging disease

A

Infectious diseases that have appeared in a population or have existed in but are rappidly increasing
Zoonotic

22
Q

Climate change

A

A change in global or regional climate patterns

23
Q

Fluctuations

A

A irregular rising and falling in number or amount

24
Q

R breeding strategy

A

R selection species are those that emphasise high growth rates, typically exploit less crodwd ecological niches and produces many offspring esch of which has a relatively low probability of surviving to adulthood (lots) (honey bee, coconut crabs)

25
K breeding strategy
K selection species possess relatively stable populations and tend to produce relatively low numbers of offsprimg however indivudual offspring tend to be quite large in comparison with r selected species (less) (chimpanzee)
26
Immigration
Move into a non native country or region to live
27
Emmigration
Leave one locatioj such as ones native country or region to live in another
28
Divergent evolution
Two different species do not share a common ancestor but have developed siikar characteristics (Shark and dolphin body)
29
Divergent evolution
Two different species share a common ancestor but have developed different characteristics (Darwin finches)
30
Parallel evolution
Developent of related species from a common ancestor, species evolve at the same rate over time due to similar environmental pressures
31
Primary consumer
Animal that eats the primary product | Sheep and grass
32
Secondary consumer
Animal that eats a primary animal
33
Natural selection
The process through which populations of living organisms adapt and change, desirable characteristics are passed onto offsprimg