11.3 Sampling Techniques Flashcards

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1
Q

Pooter

A

Used to catch small insects. Sucking on the mouthpiece produces suction via the inlet tube. Insects are drawn into the holding chamber

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2
Q

Sweep nets

A

Used to catch insects in areas of long grass

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3
Q

Pitfall trap

A

Used to catch small crawling invertebrates. Hole is dug which insects fall into. Roof placed on top so does not fill with water or get eaten by predators

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4
Q

Tree beating

A

Large cloth stretched underneath tree. Tree is shaken. Animals fall onto cloth, collected and studied.

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5
Q

Kick sampling

A

Used in rivers. River Bank is ‘kicked’ for period of time. Net held downstream. Captures organisms released into flowing water

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6
Q

Point quadrat.

A

Frame with horizontal bar. Pin is pushed through holes in the bar, whatever it touches is recorded

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7
Q

Frame quadrat frequency

A

How often a species is found, calculated in percentages of squares on the grid

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8
Q

Capture-mark-release-recapture

A

Involves capturing as many individuals as possible in an area. Organisms are marked then released. Time is given for redistribution. Recapture. Compare individuals who are marked vs who aren’t. Greater number of individuals who are marked, the smaller the population

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9
Q

Abiotic factor

A

Non-living conditions in a habitat. Direct effect on living organisms in the area.

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