Publicado por: pongpesca | 2010/06/28

ScienceDaily Environment Headlines – for the Week of June 20 to June 27, 2010

Near-true colour MODIS satellite image showing a coccolithophore (phytoplankton) bloom in the Iceland Basin. Visible are the patches and filamentous structures of the bloom. The view is a bit like what you would see if you were an Astronaut in space and you took away Earth’s atmosphere. The image is a composite for the period 5-11 July 2007. The image spans 14-26˚W, 55-62˚N. (Credit: NEODAAS/PML)
ScienceDaily (June 22, 2010) — Computer simulations performed by researchers at the National Oceanography Centre and the University of Glasgow show how oceanic stirring and mixing influence the formation and dynamics of plankton patches in the upper ocean.    

Scientists deployed from a research vessel get close to the ice in Antarctica. This kind of observing, Rutgers’ Oscar Schofield writes, is not enough to keep up with the pace of climate change in Antarctica. (Credit: Image courtesy of Rutgers University)

Oceanographers Call for More Ocean Observing in Antarctica    

ScienceDaily (June 22, 2010) — Rutgers’ Oscar Schofield and five colleagues from other institutions have published in Science, calling for expanded ocean-observing in the Antarctic, particularly in the Western Antarctic Peninsula, or WAP.    

Icebreaker in the Arctic. Scientists have found that the ocean temperature at the earth’s polar extremes has a significant impact thousands of miles away at the equator. (Credit: iStockphoto)    

Polar Oceans Key to Temperature in the Tropics    

ScienceDaily (June 21, 2010) — Scientists have found that the ocean temperature at Earth’s polar extremes has a significant impact thousands of miles away at the equator.    

Scott C. Doney was co-chief scientist on an expedition in the South Atlantic on the NOAA ship Ronald H. Brown. He led a team trying to quantify the ocean uptake of anthropogenic CO2. (Credit: Photo by John Bullister, NOAA/PMEL)    

Comprehensive Look at Human Impacts on Ocean Chemistry    

ScienceDaily (June 21, 2010) — Numerous studies are documenting the growing effects of climate change, carbon dioxide, pollution and other human-related phenomena on the world’s oceans. But most of those have studied single, isolated sources of pollution and other influences.    

A thriving, healthy Carribean coral reef today: its evolution is an important factor in its future. (Credit: NOAA)    

Caribbean Coral Reef Protection Efforts Miss the Mark, Research Suggests    

ScienceDaily (June 21, 2010) — Conservation efforts aimed at protecting endangered Caribbean corals may be overlooking regions where corals are best equipped to evolve in response to global warming and other climate challenges.    

Scientists reveal the growing atmospheric concentrations of man-made greenhouse gases are driving irreversible and dramatic changes to the way the ocean functions, with potentially dire impacts for hundreds of millions of people across the planet. (Credit: Image courtesy of Global Change Institute)    

- Ocean Changes May Have Dire Impact on People    

ScienceDaily (June 19, 2010) — The first comprehensive synthesis on the effects of climate change on the world’s oceans has found they are now changing at a rate not seen for several million years.    

Patterns of antibiotic-resistant bacteria in sharks captured in waters off Belize, Florida, Louisiana and Massachusetts. Nurse sharks in Belize and in the Florida Keys hosted the greatest number and diversity of drug-resistant bacteria. (Credit: Graphic produced by Diana Yates. Photo credits: Bull shark (NSW Department of Primary Industries); Lemon shark (drawing by Robbie Cada); Nurse shark (modified from photo by Joseph Thomas); Spinner shark (image by Dieno); Blacktip shark (modified from photo by Albert Kok); Smooth dogfish (image from U.S. Fish & Wildlife Service).)   

- Wild Sharks, Redfish Harbor Antibiotic-Resistant Bacteria   

ScienceDaily (June 18, 2010) — Researchers have found antibiotic-resistant bacteria in seven species of sharks and redfish captured in waters off Belize, Florida, Louisiana and Massachusetts. Most of these wild, free-swimming fish harbored several drug-resistant bacterial strains.   

Mississippi River hydrology may hold a possible answer for protecting fragile Gulf wetlands. (Credit: USGS)   

Gulf Oil Spill: Mississippi River Hydrology May Help Reduce Oil Onshore   

ScienceDaily (June 18, 2010) — The Gulf of Mexico: what role will the Mississippi River play in oil washing ashore and into delta wetlands? One of the spill’s greatest environmental threats is to Louisiana’s wetlands, scientists believe. But there may be good news ahead.   

Sedimentary cores taken from the ocean floor in four locations show that climate patterns in the tropics have mirrored Ice Age cycles for the last 2.7 million years and that carbon dioxide has played the leading role in determining global climate patterns. Cores from site 806 were used as controls. (Credit: Timothy Herbert, Brown University)

Carbon Dioxide Is the Missing Link to Past Global Climate Changes   

ScienceDaily (June 17, 2010) — Increasingly, the Earth’s climate appears to be more connected than anyone would have imagined. El Nino, the weather pattern that originates in a patch of the equatorial Pacific, can spawn heat waves and droughts as far away as Africa.

Research Will Help Submariners Breathe More Easily

ScienceDaily (June 17, 2010) — Professor Stan Kolaczkowski and his team from Chemical Engineering at the University of Bath are collaborating with mechanical engineers from Duke University in the US to develop a chemical-free way of removing carbon dioxide from the air inside deep sea human habitats.

NOAA Ship Thomas Jefferson in the Gulf of Mexico. (Credit: NOAA)

NOAA Ship Thomas Jefferson Continues Deepwater Horizon Spill Study Mission

ScienceDaily (June 17, 2010) — NOAA Ship Thomas Jefferson departed Galveston, Texas, June 15 to continue research on the BP Deepwater Horizon oil spill’s impact on the Gulf of Mexico. During the three-week mission, the research vessel will use sophisticated acoustic and water chemistry monitoring instruments to detect and map submerged oil in coastal areas and in the deep water surrounding the BP well head.

Crayfish, similar to organisms of higher complexity, observe their environment, and then make value-based decisions, the research shows. (Credit: David D. Yager/Jens Herberholz)

Crayfish Brain May Offer Rare Insight Into Human Decision Making

ScienceDaily (June 16, 2010) — Crayfish make surprisingly complex, cost-benefit calculations, finds a University of Maryland study — opening the door to a new line of research that may help unravel the cellular brain activity involved in human decisions.

Consumer Responses to Gulf Oil Spill Reflect Americans’ Changing Corporate Expectations

ScienceDaily (June 16, 2010) — Just as President Barack Obama called for in his address to the nation last night, Americans are demanding that BP and all other companies be responsible to both their shareholders and society, according to a new report from Rice University’s Jones Graduate School of Business.

Another Step Closer to Fully Sequencing the Salmon Genome

ScienceDaily (June 15, 2010) — The economically important, environmentally sensitive Atlantic salmon species is one step closer to having its genome fully sequenced, thanks to an international collaboration involving researchers, funding agencies and industry from Canada, Chile and Norway.

This sampling plan was put together by scientists aboard the R/V F.G. Walton Smith using particle trajectories calculated by the University of Miami Rosenstiel School of Marine & Atmospheric Science’s Coastal Shelf Modeling Group, in combination with information provided by Roffer’s Ocean Fishing Forecast Service and remotely sensed images from UM’s Center for Southeastern Tropical Advanced Remote Sensing. (Credit: ROFFS/UM-CIMAS)

Scientists Locate 23-Mile Long Oil Plume Off Florida’s Gulf Coast

ScienceDaily (June 14, 2010) — A team of dedicated South Florida researchers from the University of Miami’s Cooperative Institute for Marine and Atmospheric Studies (CIMAS) and the National Oceanic and Atmospheric Administration’s Atlantic Oceanographic and Meteorological Laboratory (NOAA/AOML) were determined to check on whether oil was, as predicted, being pulled into the Loop Current and carried toward the Dry Tortugas.

3-D Models of BP Oil Spill in Gulf of Mexico Made Using Ranger Supercomputer

ScienceDaily (June 14, 2010) — Researchers at The University of Texas at Austin’s Texas Advanced Computing Center (TACC) are using the Ranger supercomputer to produce 3-D simulations of the impact of BP’s massive Gulf of Mexico oil spill on coastal areas.

New Online Map Shows Network of Protection for North America’s Marine Ecosystems

ScienceDaily (June 14, 2010) — North America’s nearly 2,000 marine protected areas represent an unprecedented effort to protect the continent’s fragile marine environments and are found throughout the marine ecoregions that encircle our continent.

A harbor seal’s whiskers are as good at detecting fish as echolocating dolphins, new research shows. (Credit: iStockphoto/Dave Brenner)

Harbor Seals’ Whiskers as Good at Detecting Fish as Echolocating Dolphins, Researchers Find

ScienceDaily (June 13, 2010) — When a hungry harbor seal sets off in pursuit of a fish diner, the animal has a secret weapon in its tracking arsenal: its whiskers. Detecting hydrodynamic trails in water with their sensitive whiskers, seals easily track passing fish even in the most turbid conditions. Wolf Hanke from the University of Rostock, Germany, explains that blindfolded seals can track passing mini-submarines for a distance of 40m before the wake peters out. However, the hydrodynamic trails left by subs are different from those produced by fish fins, so how long could a seal track a trail generated by a moving fin before the turbulence became too faint to follow?

New research shows that sharks can detect small delays, no more than half a second long, in the time that odors reach one nostril versus the other. (Credit: iStockphoto/Cor Bosman)

Sharks Can Really Sniff out Their Prey, and This Is How They Do It

ScienceDaily (June 10, 2010) — It’s no secret that sharks have a keen sense of smell and a remarkable ability to follow their noses through the ocean, right to their next meal. Now, researchers reporting online on June 10th in Current Biology, have figured out how the sharks manage to keep themselves on course.

Fonte: ScienceDaily Environment Headlines – for the Week of June 20 to June 27, 2010

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  1. Thanks for another great post, I like coming back to read your blog and your twitter updates.Thanks for the inspiration it will help with my new blog


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