GCSE level biology notes: Ecology surveying: All sorts of measurement methods described

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Biodiversity and methods of ecological surveying

Using quadrats and transects, measuring the abundance and distribution of organisms - plants or animals - data calculations, how to use a key and draw a kite diagram, use of indicator species - investigating pollution - monitoring abiotic factors

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Sub-index for this section on biodiversity & ecological surveying

(1) Introduction to investigating distribution & abundance of organisms and learning objectives

(2) Surveying using quadrats and example of quadrat calculations based on sampling data

(3) Surveying using transects

(4) Estimating the percentage cover (distribution) of a species from a quadrat

(5) Estimating a population size by using a capture-recapture technique and three ways of trapping animals

(6) Kite diagrams to show abundance and distribution of organisms and graphs representing biodiversity-/ecology data

(7) Using keys to identify organisms

(8) Monitoring techniques, instruments for measuring abiotic factors - pollution, living organisms as indicators of environmental changes - indicator species

See also

Ecosystems - biotic & abiotic factors - interactions between organisms - interdependency

Food chains, food webs, trophic levels, pyramids of numbers or biomass, transfer efficiency

Biodiversity, land management, waste management, maintaining ecosystems - conservation

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