Organisation of an Ecosystem (AQA GCSE Biology Combined Science): Flashcards
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Practise the cards
10 cards from this deck
Transect definition
Transect definition
Straight line for ecological measurements at regular intervals
Quadrat definition
Quadrat definition
Square frame (usually 1m x 1m) to isolate sample area
Distribution (ecology)
Distribution (ecology)
Way organisms are spread across an area
Abundance (ecology)
Abundance (ecology)
Number of individuals of a species in given area
Standard quadrat size
Standard quadrat size
1m x 1m
Quadrat placement along transect
Quadrat placement along transect
At regular intervals (e.g., every 2 metres)
Quadrat placement for population estimates
Quadrat placement for population estimates
Randomly within study area
Purpose of random sampling
Purpose of random sampling
To avoid bias
Mean in quadrat data
Mean in quadrat data
Average number of organisms per quadrat
Why take multiple quadrat samples
Why take multiple quadrat samples
To get reliable average data