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KEY CONCEPT Pollution of Earth’s freshwater supply threatens habitat and health.

KEY CONCEPT Pollution of Earth’s freshwater supply threatens habitat and health. Water pollution affects ecosystems. Pollution can put entire freshwater ecosystems at risk. amphibians. Indicator species provide a sign of an ecosystem’s health. top predators. Biomagnification.

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KEY CONCEPT Pollution of Earth’s freshwater supply threatens habitat and health.

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  1. KEY CONCEPT Pollution of Earth’s freshwater supply threatens habitat and health.

  2. Water pollution affects ecosystems. • Pollution can put entire freshwater ecosystems at risk.

  3. amphibians • Indicator species provide a sign of an ecosystem’s health. • top predators

  4. Biomagnification • A process in which a pollutant moves up the food chain as predators eat prey; thus, accumulating toxins in higher concentrations.

  5. Trophic Levels • Top-Quanternary Consumer-Herring Gulf Egg-124 ppm • Tertiary Consumer-Lake trout- 4.83 ppm • Secondary Consumer-Smelt- 1.04 ppm • Primary Consumer-Zooplankton .123 ppm • Producer-Phytoplankton- .055 ppm

  6. Biomagnification causes accumulation of toxins in the food chain. • Pollutants can move up the food chain. • predators eat contaminated prey • pollution accumulates at each stage of the food chain • Top consumers, including humans, are most affected.

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