Sampling habitiats 4.2.1 Biodiversity 6.3.1 Ecosystems

OCR specification for A level Biology A
Biodiversity
b) (i) How sampling is used in measuring the biodiversity of a habitat and the importance of sampling
(ii) practical investigations collecting random and non-random samples in the field
To include how sampling can be carried out i.e. random sampling and non-random sampling (e.g. opportunistic, stratified and systematic) and the importance of sampling the range of organisms in a habitat.

Ecosystems
e) i) How the distribution and abundance of organisms in an ecosystem can be measured.

ii) The use of sampling and recording methods to determine the distribution and abundance of organisms in a variety of ecosystems.

[yagmurxx]

with stratafied sampling in biology (i do psychology as well), is it the number of repeats that has to be equal to the proportion of the part of the place being represented, or is it the number of samples?

[rseggddrgxffhfdfg]

Also could you say opportunistic sampling is also where the biologist chooses where to sample

[rseggddrgxffhfdfg]

Is using a belt transect both systematic and stratified sampling

[benjy]

How do i create a systematic sample for smaller animals?

[Heyjudeeeee]

ma'am can you help writing answers about quadrats