Question

sta te MulatorVOTYnare indicator b. Macroinvertebrates-invertebrates that you can see without magnifica species often surveyed when assessing aquatic ecosystems veyed when assessing aquatic ecosystems. The following data table and graph represent macroinvertebrates sampled in two different streams, Stream B. Using the data, develop a claim about the overall and relative water quality or and support your claim with at least two pieces of evidence for each stream. Claim: Evidence: One DOO Pollution Tolerance Total biomass in sample (g) Stream A Stream B Macroinvertebrate Species Name Mayfly nymph Caddis fly larva Freshwater shrimp Water louse Bloodworm Sludge worm Intolerant Moderately intolerant Moderately intolerant Moderately tolerant Moderately tolerant Tolerant Macroinvertebrate Biomass Comparison Total Biomass (g) Stream A Stream B Water louse Sludge worm Freshwater Bloodworm Mayfly nymph Caddis fly larva

Answer 1

Claim: Overall water quality of stream A is good. Stream B is more polluted than stream A.

Evidence: Pollution intolerant organism can not grow in polluted water and pollution tolerant organism will grow highly in polluted water.

Evidence that stream A is less polluted than stream B:

Mayfly nymph being pollution intolerant it is growing in stream A but can not grow in polluted stream B.

Similarly, Caddis fly larva being moderately intolerant to pollution is able to grow more in less polluted stream A than highly polluted stream B.

Evidence that stream B is more polluted than stream A:

Bloodworm being moderately tolerant to pollution are growing better in polluted stream B than stream A.

Sludge worm being tolerant to pollution, growing mostly in stream B than stream A.