News tagged with food chains
A Zen discovery: Unrusted iron in ocean
Iron dust, the gold of the oceans and rarest nutrient for most marine life, can be washed down by rivers or blown out to sea or - a surprising new study finds - float up from the sea floor. The discovery, ...
Space & Earth / Earth Sciences
Feb 08, 2009 |
4.3 / 5 (17) |
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500 million-year-old super predator had remarkable vision
South Australian Museum and University of Adelaide scientists working on fossils from Kangaroo Island, South Australia, have found eyes belonging to a giant 500 million-year-old marine predator that sat at ...
Other Sciences / Archaeology & Fossils
Dec 07, 2011 |
4.1 / 5 (17) |
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Study confirms oil from Deepwater Horizon disaster entered food chain in the Gulf of Mexico
Since the explosion on the BP Deepwater Horizon drilling rig in the Gulf of Mexico on April 20, 2010, scientists have been working to understand the impact that this disaster has had on the environment. For ...
Mar 20, 2012 |
4.2 / 5 (13) |
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Algae-Based Biofuel From Fish
Right now, when biofuel is produced using algae, cultures are grown and then processed into fuel. But the process is expensive and difficult. Now a company in Texas, LiveFuels, Inc., hopes that it will be ...
Sep 01, 2009 |
3.9 / 5 (12) |
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Killer whales migrate, study finds, but why?
Some killer whales, a study published Wednesday shows for the first time, wander nearly 10,000 kilometres (6,200 miles) from Antarctica's Southern Ocean into tropical waters -- but not to feed or breed.
Oct 25, 2011 |
4.5 / 5 (10) |
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Experts fear long oil effect on marine life, food chain
Scientists studying the massive BP oil spill fear a decades-long, "cascading" effect on marine life that could lead to a shift in the overall biological network in the Gulf of Mexico.
Jul 18, 2010 |
4.1 / 5 (10) |
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Harvesting of small fish species should be cut: study
(PhysOrg.com) -- New research on the fishing of small fish species near the bottom of their food chains suggests harvesting at levels previously thought to be sustainable could have devastating effects on ...
Jul 22, 2011 |
4.8 / 5 (8) |
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Open Lid Reveals Mercury
(PhysOrg.com) -- Mercury, the silvery liquid formerly used in thermometers, is now known to be highly toxic. The worst of the toxins are organic mercury compounds, such as methylmercury. Most previous analytical procedures ...
Chemistry / Analytical Chemistry
Oct 15, 2009 |
4.4 / 5 (8) |
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Catastrophic Darkness: How Life Survives an Asteroid Impact
A dinosaur-killing asteroid may have wiped out much of life on Earth 65 million years ago, but now scientists have discovered how smaller organisms might have survived in the darkness following such a catastrophic ...
Space & Earth / Space Exploration
Sep 10, 2009 |
4.6 / 5 (7) |
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Oceans' increasing acidity likely to hurt biodiversity, researchers say
(PhysOrg.com) -- Stanford researchers have gotten a glimpse into an uncertain future where increasing levels of carbon dioxide in the Earth's atmosphere will lead to higher levels in the ocean as well, leaving ...
Sep 13, 2011 |
5 / 5 (6) |
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Tiny shelled creatures shed light on extinction and recovery 65 million years ago
An asteroid strike may not only account for the demise of ocean and land life 65 million years ago, but the fireball's path and the resulting dust, darkness and toxic metal contamination may explain the geographic ...
Space & Earth / Earth Sciences
Mar 01, 2010 |
4 / 5 (7) |
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Study documents widespread extinction of lizard populations due to climate change
A major survey of lizard populations worldwide has found an alarming pattern of population extinctions attributable to rising temperatures. If current trends continue, 20 percent of all lizard species could ...
May 13, 2010 |
2.8 / 5 (10) |
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Too hot to handle: Impacts of climate change on mussels
Climate change is causing higher air and water temperatures along the east coast of the United States. These changes have shrunk the geographic region where blue mussels are able to survive, according to findings by University ...
Aug 16, 2010 |
3.5 / 5 (8) |
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Researchers discover arctic blooms occurring earlier
Warming temperatures and melting ice in the Arctic may be behind a progressively earlier bloom of a crucial annual marine event, and the shift could hold consequences for the entire food chain and carbon cycling ...
Mar 02, 2011 |
3.9 / 5 (7) |
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Headwater stream nutrient enrichment disrupts food web
Human activity is increasing the supply of nutrients, such as nitrogen and phosphorus, to stream systems all over the world. The conventional wisdom -- bolstered by earlier research -- has held that these additional nutrients ...
Dec 17, 2009 |
4.2 / 5 (6) |
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