Ecosystem & Population

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Ecosystem
All the organisms living in a particular area and all the non-living (abiotic) conditions found there.
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Botic conditiions
A living feature of an ecosystem.
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Abiotic conditions
A non-living feature of the ecosystem.
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Habitat
The place where an organism lives.
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Species
A group of similar organisms that can reproduce to give fertile offspring.
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Adaption
A feature that increases and individual's chance if survival and reproduction.
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Community
All the population of different species in a habitat.
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Interspecific competition
Competition between organisms of different species for the same resources.
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Intraspecific Competition
Competition between organisms of the same species for the same resources.
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Distribution
Where a particular species is within an area being investigated.
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Transect
A line used to help measure how plants are distributed across an area. e.g. how species change from a hedge towards he middle of the field. Quantitative data is obtained.
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Birth Rate
The number of live births each year for every 1000 people in the population.
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Death Rate
The number of people that die each year for every 1000 people in the population.
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Age-Population pyramid
A diagram showing the age structure and gender of a population.
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Quadrat
A square frame divided into a grid of 100 small squares strings attached across the frame. They provide a random sample.
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Mark-release-recapture
A method used to measure the abundance of more mobile species.
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Population growth rate
How much the size of a population increases or decreases in a year. *BIRTH RATE - DEATH RATE*
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Population growth curve
A graph showing the change in the size of a population over time.
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Survival curve
A graph which shows the percentage of all the individuals that were born in a population that are still alive at any given age.
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Life expectancy
The age that a person born into the population is expected to live to.
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Demographic Transition Model (DTM)
A graph that shows shpws changes in the birth rate, death rate and total population size for a human population over a long period of time.
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Population
All the organisms of one species in a habitat.
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Sample size
The number of samples in the investigation.
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Predation
When an organism (the predator) kills and eats another organism (the prey).
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Other cards in this set

Card 2

Front

A living feature of an ecosystem.

Back

Botic conditiions

Card 3

Front

A non-living feature of the ecosystem.

Back

Preview of the back of card 3

Card 4

Front

The place where an organism lives.

Back

Preview of the back of card 4

Card 5

Front

A group of similar organisms that can reproduce to give fertile offspring.

Back

Preview of the back of card 5
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