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Distribution - Coggle Diagram
Distribution
why sample?
large ecosystems
high organism numbers
limited time
limited reasources
Solution: representative sampling
unbiased
representative
sufficiently large
repeatable
quadrat sampling
used for plants and sessile organisms
estimate abundance and distribution
advantages:
quantitative data
simple
repeatable
limitations
not suitable for mobile organisms
may miss uncommon species
transect sampling
sampling along a line
investigates environmental gradients
measures change across habitats
belt transects
wider than line transects
incorporates quadrats
provides abundance data
common in vegetation studies
3 distribution patterns
random
uniform
clumped