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A-Levels Biology: ecology > sampling > Flashcards

Flashcards in sampling Deck (7)
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1
Q

How to sample an immobile species?

A

= random quadratting

2
Q

How to sample a mobile species?

A

= systematic sampling

3
Q

how to sample a moving species?

A

= mark release reacapture

4
Q

What is random quadratting?

A

= place 2 measuring tapes at right angles- x and y axis and apply random coordinates and place a quadranr in this region
= abundance is estimated using this quadrant
= repeat many times for reliable results- until running mean is similar
= calculate avaerga enumber of irgansims per quadrant area
= times by the area of the region being ivestigated to estimate population suze

5
Q

What is systematic sampling?

A

= position transect across area randomly
= decide an appropriate interval
= abundance estimated using a quadrant
= repeat to get reliabke results
= until running mean is similar

6
Q

What is mark capture release?

A

= capture species first
= make the species so they do not get repeated
= species are released to redirtubiute
= captyure second sample and record how many total and how many marked

7
Q
A