University of Missouri scientist Ray Semlitsch studies creatures most people don’t ever see. These creatures are active only at night and thrive in the shallow, cool, wet surroundings of headwater streams, an oft-overlooked biological environment.
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Over the last 20 years lakes and streams in remote parts of the UK, southern Scandinavia and eastern North America have been increasingly stained brown by dissolved organic matter.
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Recent decisions by the U.S. Supreme Court have focused national attention on what bodies of water fall under federal jurisdiction for protection under the Federal Clean Water Act (CWA). The CWA includes many important water quality and pollution prevention programs, particularly for headwaters, bodies of water that often serve as the tributaries for rivers and streams.
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A new survey by researchers at Oregon State University and the U.S. Environmental Protection Agency of more than 600 rivers and streams in the western United States found widespread mercury concentrations in fish.
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Northern latitude rivers contain the highest concentrations of dissolved organic carbon found in rivers worldwide and represent an important term in northern latitude carbon budgets.
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New research into the way the Antarctic ice sheet adds ice to the ocean reveals that tidal motion influences the flow of the one of the biggest ice streams draining the West Antarctic Ice Sheet.
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