Measuring environmental change Flashcards
What can be used to measure environmental change
Living factors
What are the two types of indicators used to measure environmental change
Living
Non- living
What are “indicator species”
Organisms sensitive to changed in the environment
Why do we study “indicator species”
See the effect of human activities
What living species do we use to measure levels of air pollution
Lichen
What are Lichen used for and why
Measure air pollution
Sensitive to concentration of SO2 in the atmosphere
What happens when raw sewage is released into the river
Bacterial population increases and uses up oxygen
What are invertebrate animals good for
Indictors of water pollution
Why are Invertebrate animals used to measure water pollution levels
Very sensitive to concentration of dissolved oxygen in water
What do Mayfly Larvae indicate
clean water
Some invertebrate species are adapted to live polluted conditions, what does a large amount mean
Pollution is a problem
What is the “Non living” factor
Scientists collecting data
How do satellites help measure environmental change(2)
They measure temp of the sea surface
They measure snow and ice cover
What is good about using satellites (2)
Modern/Accurate instrument
Gives global coverage
How do automatic weather stations measure environmental change
Measure atmospheric temperature at various locations
