Tag: "tidal" at biology news

Look at past sea-level rise points to troubling future

...'re studying that." Rising seas can also overwhelm tidal wetlands, like those at the head of the Trinity Ri...even in collapse of interconnected structures like tidal wetlands. "Even with past examples to guide us, devising an accurate model for local shoreline chang...

Invasive sea squirt alive and well on Georges Bank

... few days, during which time they can be spread by tidal and storm currents to form new colonies. By contrast, fragments of colonies are long-lived. Controlled experiments in Cape Cod waters by USGS and Woods Hole Oceanographic Institution scientists have shown that small pieces removed from Didemnum col...

'Lighter than air' breathing more than doubles COPD patients' exercise endurance

...ng forced expiratory volume and by the increase in tidal volume, mean expiratory flow, and minute ventilation at peak exercise. Importantly, the improvement in maximal expiratory flow determined a significant reduction in lung dynamic hyperinflation and dyspnea, as reflected by the significant increase in ...

B-15A iceberg's close encounter monitored by Envisat

...s the elements of temperature variations, wave and tidal flexure, or bending, to weaken and periodically whittle pieces off the end of the ice promontory." Providing a wider Antarctic view The 400-kilometre swath, 150-metre resolution images shown here of B-15A and the Drygalski ice tongue are from ASA...

Mystery on the Hudson

...levels of DOC flowing downstream to the freshwater tidal flats. According to Findlay, if the bacteria are bypassing the material flowing into the river, then downstream waters would receive larger amounts of DOC. This process would add to oxygen demand, increasing the river's susceptibility to eutrophica...

Satellite images give a better picture of sediment transport

...ount the constraints exerted by the wind field and tidal effects (1). The model can determine the erosion fluxes and pinpoint the areas of particle deposition. Validation and refinement of the models are achieved by means of in situ measurement of turbidity, and of sediments, in order to determine in parti...

The Academy of Natural Sciences investigates effects of climate change on Delaware tidal marshes

...en more salt water mixes in with freshwater in the tidal marshes of the Delaware Estuary as the predicted r...earch are assessing how the ecologically important tidal freshwater marshes of the Delaware Estuary are likely to respond to the predicted rise in sea level ...

Now scientists think you'd be 'roasted' in a black hole

...billions of suns, explains Professor Hamilton, the tidal forces which cause spaghettification are relatively weak. You would instead be roasted by the heat of the plasma. Professor Andrew Hamilton is Professor of Astrophysics at the Department of Astrophysical and Planetary Sciences, University of Colorado...

Deeply held values fuel debate over offshore wind power

...develop new uses of the ocean such as wave energy, tidal energy, aquaculture, and others requires the government to spin together a hodgepodge of laws that were enacted prior to the development of these technologies and applications," Firestone says. "While public debate over offshore wind power is likely ...

Marshes tell story of medieval drought, little ice age, and European settlers near NYC

...tory of the area's climate. Sediment layers from a tidal marsh in the Hudson River Estuary have preserved pollen from plants, seeds, and other materials. These past remnants allowed researchers from Columbia University, New York, N.Y. and NASA to see evidence of a 500 year drought from 800 A.D. to 1300 A.D...

Highlights in the June 2005 issue of Frontiers in Ecology and the Environment

...projects and better coordination and monitoring of tidal and non-tidal restoration efforts. Community Recovery While communities are expected to undergo several series of succession after a major disturbance, a recent review by Kathryn Flinn (Cornell University) and Mark Velland (National Center for Ecol...

Beach pollution is worst during new and full moon

...complex physical and biological factors, including tidal cycles and seasonal rainfall. This complexity make...s throughout Southern California, keeping track of tidal patterns and analyzing them for concentrations of enterococci -- bacteria that allow scientists to e...

Roadways and parking lots threaten freshwater quality in the northeastern US

... is low, a number of streams were as saline as the tidal waters of the Hudson River estuary. Dr. Groffman, of the Institute of Ecosystem Studies, notes, "It is surprising and significant that the long-term record shows that salinity concentrations are going up, even in places where the amount of salt appl...

U. of Colorado researcher identifies tracks of swimming dinosaur in Wyoming

...tains fossilized remains of a marine shoreline and tidal flats. Geologists believe an inland sea, called the Sundance Sea, covered Wyoming, Colorado and a large area of the western United States during the Jurassic period from about 165 million years ago to 157 million years ago. Mickelson said the sea m...

New Science study: Mangroves shielded communities against tsunami

...table for planting only in certain locations where tidal currents and wave actions are not too strong, such as in former mangrove areas, behind coastal mudflats, in river estuaries and lagoons. . Elsewhere, the conservation of dune ecosystems or green belts of beach forest trees could fulfil the same prote...

Microfossils show promise in prospecting climate history

...g the coasts the sediments left behind by massive tidal surges that wash, tsunami-like over the land. The trick, of course, is to find places where surge-caused layers of coastal sedimentation are consistently preserved and then to identify distinguishing details in the hurricane-caused layers. One place ...

Nutrient pollution causes a long-term effect on Chesapeake Bay ecosystem

...eeders consuming vast amounts of algae. Extensive tidal marshes, which serve as effective nutrient buffers...all increases in sea grass beds, oyster reefs, and tidal marshes may lead to substantial benefits toward recovery from nutrient enrichment due to their secon...

Book released on Hurricane Isabel's effect on Chesapeake Bay

...eptember 2003, it caused devastating damage to its tidal areas and tributaries. Parts of Annapolis, Baltimore's Fells Point and Alexandria, Va were underwater, destroying boats, docks, cars, and homes. The book is based on proceedings of a November 2004conference, sponsored by the Chesapeake Research Cons...

Bird flu poses threat to international security, Illinois scholar says

.... We've recently witnessed the effects of just one tidal wave one hurricane. And as devastating as those occurrences have been, they are not ongoing events over an 18-month period." While theories on how the avian flu is transmitted and spread among poultry and other fowl remain inconclusive, Palmore said...

MBL scientists to present research at 2006 Ocean Sciences Meeting

...populations, river runoff, meteorological forcing, tidal cycles and water chemistry as part of the Mt. Hope Bay Natural Laboratory (MHBNL) program, a 5-year interdisciplinary project at the University of Massachusetts Dartmouth School of Marine Science and Technology (SMAST). While phytoplankton and zoopla...

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(Date:4/17/2014)... New Rochelle, NY, April 17, 2014The development of stem ... on the ability to characterize stem cell populations based ... Cross have discovered a new marker that is highly ... human umbilical cord blood, which they describe in an ... journal from Mary Ann Liebert, Inc., publishers. The article ...
(Date:4/17/2014)... Professor Marc Andr Gauthier and Professor Luca Razzari ... each been awarded large grants from the John ... for Innovation (CFI) for the acquisition of state-of-the-art ... be added matching grants from the Ministre de ... et de la Technologie (MESRST). These new laboratories ...
(Date:4/17/2014)... German . ... also provide us with a continuous stream of information about ... sit still in a car the world glides by ... Seemingly without effort, our brain calculates self-motion from this "optic ... a steady gaze during our own movements. Together with biologists ...
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