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Marine phytoplankton changes form to protect itself from different predators
06-15-2007 · EurekAlert!A tiny single-celled organism that plays a key role in the carbon cycle of cold-water oceans may be a lot smarter than scientists had suspected.
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Keywords: marine, phytoplankton, changes, form, protect, itself, different, predators, change, predator
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- Changes in west coast marine ecosystems significant
02-16-2007 · EurekAlert!
The California Current system has experienced significant changes during the past decade, resulting in dramatic variations in the ecosystem, characterized by shifts in phytoplankton production, expanding hypoxic zones, and the collapse of marine food webs off the western coast of the United States. These changes, driven by new wind patterns, are consistent with predictive models of global climate change.
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- Pressured by predators, lizards see rapid shift in natural selection
11-16-2006 · EurekAlert!
Countering the widespread view of evolution as a process played out over the course of eons, evolutionary biologists have shown that natural selection can turn on a dime -- within months -- as a population's needs change. In a study of island lizards exposed to a new predator, the scientists found that natural selection dramatically changed direction over a very short time, within a single generation, favoring first longer and then shorter hind legs.
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- Global warming will reduce ocean productivity, marine life
12-06-2006 · EurekAlert!
A 10-year, satellite-based analysis has shown for the first time that primary biological productivity in the oceans -- the growth of phytoplankton that forms the basis for the rest of the marine food chain -- is tightly linked to climate change, and would be reduced by global warming. This would cause a rapid, overall reduction in marine life.
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- 2008 Pew Fellowship in marine conservation awarded to UM Rosenstiel's Dr. Andrew Baker
02-05-2008 · EurekAlert!
Coral reef scientist Dr. Andrew C. Baker has been awarded the prestigious 2008 Pew Fellowship in Marine Conservation to help protect reef corals from climate change. Dr. Baker, an Assistant Professor at the University of Miami's Rosenstiel School, plans to develop novel and groundbreaking techniques to enhance the thermal tolerance of corals and help them survive dangerously warming oceans around the world.
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- Scientists reveal first-ever global map of total human effects on oceans
02-14-2008 · EurekAlert!
More than 40 percent of the world's oceans are heavily affected by human activities, and few if any areas remain untouched, according to the first global-scale study of human influence on marine ecosystems. By overlaying maps of 17 different activities such as fishing, climate change, and pollution, the researchers have produced a composite map of the toll that humans have exacted on the seas.
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- Hurricane can form new eyewall and change intensity rapidly
03-01-2007 · EurekAlert!
Data collected in 2005 from Hurricane Rita is providing the first documented evidence that rapid intensity changes can be caused by clouds outside the wall of a hurricane's eye coming together to form a new eyewall.
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- When lava flows and glaciers recede, predicting how species take over
05-22-2007 · EurekAlert!
When fire, clearcutting, lava or receding glaciers create empty habitat, species arrive to form a new ecological community. Adverse conditions -- such as isolation of the new community or an unfavorable climate -- may hinder the arrival of new species and change the pattern of succession. This study provides a framework to understand why communities mature at different rates, which is fundamental to managing clear cuts or fire.
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- Immediate action needed to save corals from climate change
12-13-2007 · EurekAlert!
The journal Science has published a paper today that is the most comprehensive review to date of the effects rising ocean temperatures are having on the world’s coral reefs. "The Carbon Crisis: Coral Reefs under Rapid Climate Change and Ocean Acidification," co-authored by 17 marine scientists from seven different countries, reveals that most coral reefs will not survive the drastic increases in global temperatures and atmospheric CO2 unless governments act immediately to combat current trends.
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- Marine life stirs ocean enough to affect climate, says FSU study
10-13-2006 · EurekAlert!
Oceanographers worldwide pay close attention to phytoplankton and with good reason. The microscopic plants that form the vast foundation of the marine food chain generate a staggering amount of power, and now a groundbreaking study led by Florida State University in Tallahassee, Fla., has calculated just how much -- about five times the annual total power consumption of the human world.
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- Climate changes brews trouble for marine life in European Seas, Marine Board-ESF report says
03-02-2007 · EurekAlert!
There is no denying that climate changes have profound impacts on the world and especially on the marine environment. Recent research has shown that the Northern Hemisphere has been warmer since 1980 than at any other time during the last two millenniums. As a result the increase in temperature under climate change was generally higher in northern than in southern European seas.
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