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News Release 15-018
Nutrient pollution from nitrogen and phosphorus reduces streams' ability to support aquatic life
Residence time of leaves and twigs, important to stream-dwelling species, can be halved
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Leaves and wood provide essential "ecosystem services" to streams; nutrient pollution affects them.
Credit: Phillip Bumpers
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Experiments were in streams (shown by dots) characteristic of human-modified landscapes.
Credit: USGS/USDA/World Imagery Source
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Scientists tested the effects of nutrient pollution by adding nutrients to certain streams.
Credit: Jonathon Benstead
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Researchers maintained additions of nitrogen and phosphorus to streams on a year-round basis.
Credit: Phillip Bumpers
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Nutrient-stimulated feeding by stream insects also reduces retention of carbon in stream reaches.
Credit: John Davis
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