A group of similar organisms that can reproduce to produce FERTILE offspring
Species
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15
When using a quadrat to estimate population size, we take many samples to ensure that our data is what?
Representative of the population
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15
Give two assumptions made when using the mark, release, recapture technique to estimate population size
No immigration / migration (Ignore ref to emigration);
No reproduction (Ignore ref to death);
Idea of mixing;
Marking does not influence behaviour
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15
Differences between organisms of the same species
Intraspecific variation
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15
A line along which organisms can be sampled in ecological studies. Particularly useful in ecosystems such as sea shores and sand dunes where abiotic conditions and species vary across the area being studied.
Belt transect
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15
The range and variety of genes, species and habitats within a particular ecosystem
Biodiversity
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15
The study of inter-relationships between organisms & their environment
This environment includes living (biotic) factors (e.g. competition & predation) & non-living (abiotic) factors (e.g. temperature & rainfall).
Ecology
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15
all of the organisms of one species in an ecosystem
Population
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eraser
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gold
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gift
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lifesaver
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banana
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fairy
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gift
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baam
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15
When using a quadrat to estimate population size, we use a random number generator to avoid what?
a sampling area used for measuring the frequency or percentage cover of organisms (plants or slow moving organisms)
Quadrat
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15
A method of estimating population size of motile organisms by marking a number of them, releasing them & then counting the number of marked organisms in a second sample