Tag: "oceans" at biology news

NASA unveils spectacular suite of new global data products

...ure the interactions of the atmosphere with lands, oceans and life on our world. Another copy of the MODIS instrument will fly aboard Aqua in spring 2002 with an afternoon equatorial crossing to capture the daily variability of the Earth system. According to Land Group Leader Chris Justice, MODIS is the fir...

MIT prof: Oceans at risk if policy tool not restricted

...lobal warming could potentially wreak havoc on the oceans if instituted with no restrictions, warn an MIT pr...n fertilization is used as a tool for studying the oceans response to enrichment. Such experiments have already yielded "very exciting results that have contr...

Chemical pollution and human sewage could be killing corals

...iversity. If we destroy the reefs, we destroy the oceans ability to reproduce. To better understand the disease, Fouke and his colleagues, UI microbiologist Abigail Salyers and postdoctoral researchers George Bonheyo and Jorge Frias-Lopez, studied corals off the island of Curacao in the Netherlands Antille...

Small, mountain rivers play big role in ocean sediment

... content of water entering the oceans to gauge the overall health of the environment, Ca...of water they release into the oceans is correspondingly small," Carey said. "But the role of these islands in the oce...

Global warming more common than thought, deep-sea drilling off Japan now demonstrates

...th greenhouse gases, he said. Besides reducing the oceans oxygen-carrying capacity, warming also increased the waters corrosive characteristics and dissolved shells of surface-dwelling organisms before they could settle to the bottom. In some especially striking layers of black, carbon-rich mud, only the re...

Healy researchers make a series of striking discoveries about Arctic Ocean

...rothermal vents on mid-ocean ridges in the world's oceans provide chemical energy that supports exotic life forms and large ecosystems far removed from the Earth's sunlit surface, where photosynthesis forms the base of the food chain. "Our discovery of these signals clearly show that hydrothermal vents sim...

Antarctic mud reveals ancient evidence of global climate change

...using catastrophic coastal flooding as the world`s oceans rise. Ironically, say researchers, the most prist... predict that, if the ice sheet melts, the world`s oceans could rise some 170 feet, submerging many low-lying countries as well as the entire state of Florida...

January media highlights-GSA Bulletin

...Ophiolite studies provide crucial insight into how oceans spread. Their emplacement on land is also a tecton... major importance. Because no oceanic crust in the oceans is older than about 200 million years, ophiolites also provide us with the only information preserve...

February media highlights - GSA Bulletin

...an domains. One major question is to know how many oceans were closed during the building of the Alps. From the metamorphic evolution of the metasediments that experienced high-pressure metamorphic conditions, we discuss the nature of the second oceanic domain (the Valaisan) and its geodynamic significance ...

The oceans top 10 coral reef hotspots identified for first time

...mined the hotspots category based on threats. The oceans have long been considered limitless places where we have little impact on species survival. But the richest of the shallow tropical marine habitats are at risk of disappearing at an incredibly fast rate. This study is further proof that we need to ...

Comparing ag and industrial runoff between estuaries

...he system and mixes with adjacent systems, such as oceans or seas, the flows of water are described by scientists in terms of "water budgets" and the nutrients carried by these flows are described by "nutrient budgets." By examining discrepancies in nutrient budgets, scientists make inferences about biolog...

Still waters? 'Clear-cutting' robs the deep-sea of ancient treasures

... zones" cover only a small fraction of the world's oceans (0.028 percent), or about one-third of all coral reefs (35.2 percent). Yet, they may shelter more than two-thirds of all vulnerable, range-restricted marine creatures. Marine species in these areas are at much greater risk of extinction than previous...

North Atlantic study reveals food fish catches have declined by half - despite tripled fishing effort

...f British Columbia. We are paying fishers in other oceans to grind down their marine ecosystems for our cons...works of no-take marine reserves: to replenish the oceans depleted resources and to restore productivity, says Pauly. In order to restore productivity to a fi...

Military technologies and increased fishing effort leave no place for fish to hide

...fishing grounds. Without such marine reserves, the oceans future looks bleak, says Roberts....

Alien life forms more likely to be found outside solar system, says Colorado prof.

...rth has been found in boiling thermal vents in the oceans to microbes in ice, the temperature span for life anywhere in the universe is likely to range from roughly 58 degrees Fahrenheit to 302 F, Pace said. "We dont know enough about Mars yet," he said. "Perhaps the soils under Olympus Mons -- a mountain...

Corals are being robbed of light

... that's making life difficult for coral reefs. The oceans are getting murkier, and that's stunting reef growth. Sunlight is essential for coral reefs. Symbiotic algae called zooxanthellae living in the corals photosynthesise to produce carbohydrates and oxygen that the corals use to make reef-building cal...

April GEOLOGY and GSA TODAY media highlights

...inents were beginning to form. Possibly there were oceans as early at 4,400 Ma. These results are consistent with the hypothesis of a cool early Earth, where the meteorite flux was less intense than previously thought. It is possible that life first evolved at this time, 900 m.y. earlier than the oldest kno...

Sea level rise threatens marshes in Chesapeake and Delaware Bays

...e amount of carbon that would be released into the oceans and atmosphere. Marshes act as carbon sinks, holding it in solid form, so it does not emerge as carbon dioxide gas. The study, by Prof. Michael S. Kearney and colleagues, is reported in the April 16 issue of Eos, a publication of the American Geophys...

Satellite data to predict plankton blooms by analyzing ocean color

...w it gets recycled. Were trying to get at how the oceans biological pump works. The biological pump is the mechanism by which carbon dioxide is exported from the surface ocean into the deep ocean via sinking particles, like the remains of phytoplankton as they die off after blooms. It is a critical facto...

Ocean ecosystems only altered following two great mass extinctions

...result of increased levels of dissolved CO2 in the oceans triggered by a comet or meteorite impact. (Inclusions in Permian rocks containing gases known only to exist in outer space were discovered only last year.) The Cretaceous extinction, also triggered by a large impact, was not as thorough, but is the o...

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