biodiversity Flashcards
What is biodievrsity
A measure ion all of the different plant animal and fungus species worldwide
What is habitat biodiversity
the range of habbitiatis in which species live
What is species biodiversity
The number of species in a habbitat
What is species richness
The number of species in a habbitat
what is a species
individual organisms with very similar appearance anatomy physiology and biochem
What is genetic biodiversity
The variation between individuals of the same species. This is found within their dna
Randoom sampling
randomly choose sites either by throwing a quadrant or using a random number generator.
+ This ensures that there os no bias
- May not cover all areas of habitat equally
Opportunistic sampling
When samples are taken with the knowledge of where areas that are useful are
+easier
- may be biased and lead to overestimates
Stratified
Dividing the habitat into areas that look different and sampling these separately
+cpvers all areas of habitat are sampled
-may over represent smaller areas
systematic
taken at fixed intervals
what is a transect
line across the habitat samples can be taken along this line
what is a sweeping net used for
catching inverterates
walk through a habbitat swinging that tang in wide arcs
what is a poster used for
collecti0ng individual samples from a large sample such as a net
What is a pitfall trap used for
set it in the soil shit falls in there
what I a tullgren funnel
light above leaf litter
light warms up and forces them through the mesh under the litter into the jar with a preservative in it
