Posts Tagged ‘dead zone’
Chesapeake dead zones return to life
JOHNS HOPKINS AND U. MARYLAND (US) — Reducing the flow of fertilizers, animal waste, and other pollutants into the Chesapeake Bay is shrinking oxygen-depleted “dead zones” in America’s largest estuary, a new study finds. Continue…
Wednesday, November 9, 2011 10:48 - 0 Comments
Earth & Environment - Oct 13, 2011 12:14 - 0 Comments
How to rein in toxic bloom’s perfect storm
CORNELL (US) — The combination of climate change and nutrient runoff is expected to escalate toxic aquatic blooms, but localized efforts may be successful in controlling their spread from farms and lawns to streams, lakes, and ultimately oceans. (more…)
Top Stories - Jul 19, 2011 9:40 - 0 Comments
Gulf ‘dead zone’ bigger than Delaware
TEXAS A&M (US) — This year’s dead zone in the Gulf of Mexico is 3,300 square miles—bigger than Delaware and Rhode Island combined—and researchers anticipate it could become much larger. (more…)
Earth & Environment - May 31, 2011 13:14 - 0 Comments
‘Dead Zone’ fish struggle to reproduce
U. TEXAS-AUSTIN (US) — Atlantic croaker living in the large Gulf of Mexico “Dead Zone,” off the coast of Louisiana, are showing signs of severe reproductive problems. (more…)
Earth & Environment - Mar 25, 2011 14:07 - 0 Comments
Mass extinction made algae oxygen hogs
STANFORD (US) — After the Permian-Triassic mass extinction, algae and bacteria rebounded so fast they grabbed virtually all the oxygen in the sea, slowing the recovery of the rest of animals for millions of years. (more…)
Earth & Environment - Feb 7, 2011 18:43 - 0 Comments
Global map of phosphorus hot spots
MCGILL U. (US) — A detailed global map reveals imbalances in the way that phosphorus, an essential plant nutrient, is being used around the world. (more…)
Earth & Environment - Nov 30, 2010 12:14 - 0 Comments
Farm drainage choking life from Gulf
CORNELL/U. ILLINOIS (US) — Tile drainage systems in upper Mississippi farmlands are the biggest contributors of nitrogen runoff into the Gulf of Mexico. (more…)
Earth & Environment - Sep 28, 2010 16:37 - 2 Comments
Gulf dead zone tied to tile drainage
U. ILLINOIS (US) — The most heavily tile-drained areas of North America are the largest contributing sources of nitrate to the Gulf of Mexico, leading to seasonal hypoxia. (more…)
Earth & Environment - Jul 20, 2010 9:16 - 0 Comments
Small fish living it up in dead zone waters
PENN STATE (US)—A small fish is unabashedly exploiting an oxygen-depleted area off the coast of southwest Africa and putting the once ecologically dead-end jellyfish back into the food cycle, according to an international team of scientists. (more…)
Earth & Environment - Jun 18, 2010 10:04 - 0 Comments
Straw keeps nitrogen down on the farm
PENN STATE (US)—When raising corn, straw left in the field after grain harvesting, along with legume cover crops, reduces nitrogen leaching into waterways, but may also lower economic return. (more…)
Earth & Environment - Jun 8, 2010 14:50 - 2 Comments
Will oil spill expand Gulf’s dead zone?
MICHIGAN STATE (US)—The worst oil spill in U.S. history could worsen and expand the oxygen-starved “dead zone” in the Gulf of Mexico, known for its inhospitability to marine life, suggests Michigan State University professor Nathaniel Ostrom. (more…)
Earth & Environment - Jul 10, 2009 14:36 - 0 Comments
Across the globe, fertilizing crops in the extreme
The environmental consequences of using inorganic fertilizers have persisted in the United States, says Laurie Drinkwater, an agroecologist who studies the Mississippi River Basin.
Earth & Environment - Jun 22, 2009 14:53 - 1 Comment
Gulf ‘dead zone’ an ecological time bomb?
U. MICHIGAN (US)—Scientists predict this year’s seasonal drop in oxygen levels in Gulf of Mexico waters will be the largest on record, creating a so-called “dead zone” that threatens the health of a half-billion dollar fishery. (more…)
