Distributition Of Organisms Flashcards
Means of identifying organisms using a series of paired statements or branched diagram based on their characteristics
Key
Arrangement or location of a species over the total area where they occur within an ecosystem
Distribution
Method used to sample an ecosystem at intervals along a straight line
Line transect
Organisms whose presence or absence can be used to indicate pollution
Indicator species
Measure of the extent to which an organism occurs in an ecosystem
Abundance
Open container buried to its rim in soil and used to catch animals active on the soil surface
Pitfall trap
Contamination of environment by a harmful substance
Pollution
Haphazard and lacking a pre-arranged pattern
Random
Instrument used to measure light intensity
Light meter
Method of obtaining data based on samples that are intended to represent the population or ecosystem as a whole
Sampling technique
Simple plants composed of algae and fungi that act as indicator species for different concentrations of sulphur dioxide in the air
Lichen
Instrument used to measure moisture content of soil
Moisture meter
Square grid of known area used to survey plants in a location
Quadrat
Factors affecting an ecosystem that are of living origin
Biotic factors
A word which describes a factor that relates to non-living features of an ecosystem
Abiotic factors
Small part of a much larger whole
Sample
Sampling technique used to catch aquatic organisms
Netting
Trap designed to catch tiny soil organisms by making them move away from hot, dry, bright conditions
Tullgren funnel
Limitation of a sampling technique that produces unreliable results
Source of error
Device used to collect small insects and other invertebrates made from a bottle and two pieces of tubing
Pooter
