Distribution of Organisms Flashcards
what is a biotic factor
related directly to living organisms
examples of biotic factors
disease, food availability, grazing and predation
what is an abiotic factor
non-living and are physical factors
examples of abiotic factors
light intensity, moisture, oxygen concentration, pH and temperature
how to measure light intensity
light meter
how to measure temperature
thermometer
how to measure pH
pH meter
how to measure soil moisture
moisture meter
what is a quadrat used for
used to sample plants and non moving organims
what is a pitfall trap used for
used to sample animals living in leaf litter
what are keys used to identify
organisms
what is a paired statement key
a list of numbered statements
what is an indicator species
indicates levels of pollution in the environment by either their presence or absence or abundance
what is lichen
lichen grows on trees.
hairy lichens indicate low levels of Sulphur dioxide in the air. crusty lichens indicates a high level of Sulphur dioxide in the air.
