Indicator species (Edexcel GCSE Biology): Flashcards
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Definition of indicator species
Definition of indicator species
Sensitive organisms used to assess pollution levels in water/air
What indicator species are sensitive to
What indicator species are sensitive to
Oxygen levels or pollutants
What info can indicator species provide?
What info can indicator species provide?
Presence or absence of pollution (not precise levels)
Methods for precise pollution measurements
Methods for precise pollution measurements
Chemical analysis with electronic meters or lab tests
Polluted water indicator species
Polluted water indicator species
Bloodworms and sludgeworms
Clean water indicator species
Clean water indicator species
Freshwater shrimp and stonefly nymphs
What do bloodworms/sludgeworms indicate?
What do bloodworms/sludgeworms indicate?
High pollution/low oxygen water
What do freshwater shrimp/stonefly indicate?
What do freshwater shrimp/stonefly indicate?
Clean water
Air pollutant that lichens are sensitive to
Air pollutant that lichens are sensitive to
Sulfur dioxide
What does blackspot fungus on roses indicate?
What does blackspot fungus on roses indicate?
Clean air (sensitive to sulfur dioxide)
Lichen types from clean to polluted air
Lichen types from clean to polluted air
Bushy → leafy → crusty
Effect of eutrophication on water
Effect of eutrophication on water
Depletes oxygen levels
Sources of sulfur dioxide pollution
Sources of sulfur dioxide pollution
Industrial processes and power stations
Type of understanding indicator species provide
Type of understanding indicator species provide
Qualitative (not quantitative)
What accurately measures pollution?
What accurately measures pollution?
Dissolved meters or chemical tests