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Bella Nat 5

Unit 3 part 3 Sampling Techniques & Measuring Abiotic Factors

QuestionAnswer
What is a Pitfall trap used to sample? small ground invertebrates
What are Quadrats used to sample? Plants
What is a limitation of a pitfall trap difficult in hard soil
What is used to sample small ground invertebrates? Pitfall Trap
What is used to sample Plants? Quadrat
What is a limitation of a quadrat? Time consuming
What is a source of error with a pitfall trap and how can it be avoided ? Organisms eat each other / check traps regularly OR Birds eat organisms /cover the trap
What is a source of error when using a Quadrat and how can it be avoided? Not thrown Randomly,/ Don’t look where throwing it
What is used to measure light intensity? A light intensity meter
What is a source of error when using a Light Intensity meter and how can it be avoided? Shadow on the meter / hold at arm’s length.
What is a source of error when using a Moisture Meter and how can it be avoided? Moisture on probe / wipe between readings
What is a source of error when using a pH Meter and how can it be avoided? Soil on probe / wipe between readings
What is used to measure soil pH? A pH meter
What is used to measure soil Moisture? A light Moisture meter
What is used to measure soil temperature A thermometer
What is a source of error when using a soil Thermometer and how can it be avoided? Not put to same depth/ put to same depth
Created by: nscobie