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Showing releases 1126-1150 out of 1320.

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Public Release: 25-Feb-2014
Proceedings of the National Academy of Sciences
Ecotoxicity: All clear for silver nanoparticles?
It has long been known that, in the form of free ions, silver particles can be highly toxic to aquatic organisms. Yet to this day, there is a lack of detailed knowledge about the doses required to trigger a response and how the organisms deal with this kind of stress. To learn more about the cellular processes that occur in the cells, scientists from the Aquatic Research Institute, Eawag, subjected algae to a range of silver concentrations.

Contact: Dr. Kristin Schirmer
kristin.schirmer@eawag.ch
Ecole Polytechnique Fédérale de Lausanne

Public Release: 25-Feb-2014
Geology
Geology covers Mars, the moon, anthropogenic lead poisoning, earthquake hazards, and more
The Geological Society of America's top journal, Geology, displays its multidisciplinary best in this latest posting. Earth science disciplines covered include geoarchaeology, climatology, invertebrate paleontology, sedimentology, geomorphology, seismology, planetary geology, geochemistry, glaciology, plate tectonics, mineralogy, and environmental and medical geology. Locations include Mars; Earth's moon; India; the Tibetan Plateau; the Saskatchewan River; L'Aquila, Italy; the Antarctic; Australia; the Andes; the San Andreas fault system; and Kume Island, Japan.

Contact: Kea Giles
kgiles@geosociety.org
Geological Society of America

Public Release: 25-Feb-2014
Proceedings of the Royal Society B
Smithsonian scientists solve 'sudden death at sea' mystery
Modern whale strandings can be investigated and their causes identified. Events that happened millions of years ago, however, are far harder to analyze -- frequently leaving their cause a mystery. Smithsonian and Chilean scientists examined a large fossil site in the Atacama Desert of Northern Chile -- the first definitive example of repeated mass strandings of marine mammals in the fossil record. It reflected four distinct strandings over time, indicating a repeated and similar cause: toxic algae.

Contact: John Gibbons
gibbonsjp@si.edu
202-633-5187
Smithsonian

Public Release: 25-Feb-2014
Canadian Journal of Fisheries and Aquatic Sciences
It's all water over the dam -- but how and when it falls has huge impact on salmon
By adjusting water discharges in ways designed to boost salmon productivity, officials at a dam in central Washington were able to more than triple the numbers of juvenile salmon downstream of the dam over a 30-year period. The research shows that keeping eggs and young salmon under water at especially vulnerable times boosts survival.
Grant County Public Utility District

Contact: Tom Rickey
tom.rickey@pnnl.gov
509-375-3732
DOE/Pacific Northwest National Laboratory

Public Release: 24-Feb-2014
Geosphere
Geosphere covers Mexico, the Colorado Plateau, Russia, and offshore New Jersey
New Geosphere postings cover using traditional geochemistry with novel micro-analytical techniques to understand the western Trans-Mexican Volcanic Belt; an investigation of mafic rock samples from a volcanic field near Yampa, Colorado, travertine deposits in the southeastern Colorado Plateau of New Mexico and Arizona; a study of 'Slushball Earth' rocks from Karelia, Russia, using field and micro-analytical techniques; and an addition to the 'The History and Impact of Sea-level Change Offshore New Jersey' special issue.

Contact: Kea Giles
kgiles@geosociety.org
Geological Society of America

Public Release: 24-Feb-2014
New digital atlas details Alaska sea ice history since 1860
A new web portal provides access to 160 years of historical sea ice concentration data for Alaska's Beaufort, Chukchi, and Bering seas, and allows users to view and download sea ice concentration data from 1850 to the present. This data set provides researchers with a reliable tool to evaluate climate change impacts.
NOAA, University of Alaska Anchorage

Contact: Ben Sherman
ben.sherman@noaa.gov
301-713-3066
NOAA Headquarters

Public Release: 24-Feb-2014
EARTH Magazine: Tsunamis from the sky
Only recently have scientists unraveled how a storm can create and propagate these far-traveling waves -- called meteorological tsunamis or meteotsunamis. The waves, which arise out of a complex interplay of storm speed, wave dynamics and ocean-bottom bathymetry, may be less common than seismic tsunamis, but they can still be destructive and deadly.

Contact: Maureen Moses
mmoses@agiweb.org
703-379-2480
American Geosciences Institute

Public Release: 24-Feb-2014
Nature Physics
Researchers find flowing water can slow down bacteria
In a surprising new discovery, scientists show that microbes are more likely to adhere to tube walls when water is moving.
National Science Foundation, Gordon and Betty Moore Marine Microbial Initiative Investigator Award

Contact: Abby Abazorius
abbya@mit.edu
617-253-2709
Massachusetts Institute of Technology

Public Release: 24-Feb-2014
The Biological Bulletin
Biomedical bleeding affects horseshoe crab behavior
New research indicates that collecting and bleeding horseshoe crabs for biomedical purposes causes short-term changes in their behavior and physiology that could exacerbate the crabs' population decline in parts of the East Coast.
New Hampshire Sea Grant

Contact: Rebecca Zeiber
rebecca.zeiber@unh.edu
603-862-6704
University of New Hampshire

Public Release: 24-Feb-2014
2014 Ocean Sciences Meeting
Vitamin water: Measuring essential nutrients in the ocean
Oceanographers have found that archaea, a type of marine microbe, can produce B-12 vitamins in the open ocean.
National Science Foundation

Contact: Hannah Hickey
hickeyh@uw.edu
206-543-2580
University of Washington

Public Release: 24-Feb-2014
Proceedings of the National Academy of Sciences
Marine algae can sense the rainbow
A new study published in Proceedings of the National Academy of Sciences has shown for the first time that several types of aquatic algae can detect orange, green and blue light.
US Department of Agriculture, Gordon and Betty Moore Foundation, National Institutes of Health, Packard Foundation, and others

Contact: Lindsay Jolivet
lindsay.jolivet@cifar.ca
416-971-4876
Canadian Institute for Advanced Research

Public Release: 21-Feb-2014
NASA sees Tropical Cyclone Guito exit the Mozambique Channel
NASA's Terra satellite captured a visible image of Tropical Cyclone Guito as it exited the Mozambique Channel and moved into the open waters of the Southern Indian Ocean.
NASA

Contact: Rob Gutro
robert.j.gutro@nasa.gov
NASA/Goddard Space Flight Center

Public Release: 21-Feb-2014
Journal of Experimental Marine Biology and Ecology
Temperature and ecology: Rival Chilean barnacles keep competition cool
A lot of research shows that temperature can strongly influence species interactions and sometimes shape the appearance and functioning of biological communities. That's why a newly published finding that changes in temperature did not alter the competitive balance of power between two rival species of Chilean barnacles is an ecological surprise.
Fondo Nacional de Desarollo Cientifico y Tecnologico of Chile, Brown University

Contact: David Orenstein
david_orenstein@brown.edu
401-863-1862
Brown University

Public Release: 20-Feb-2014
2014 Ocean Sciences Meeting
What has happened to the tsunami debris from Japan?
The amount of debris in the ocean is growing exponentially, becoming more and more hazardous and harmful to marine life and therefore to our ocean food source. Measuring and tracking the movements of such debris are still in their infancy. The driftage generated by the tragic 2011 tsunami in Japan gave scientists Nikolai Maximenko and Jan Hafner a unique chance to learn about the effects of the ocean and wind on floating materials as they move across the North Pacific Ocean.
International Pacific Research Center, Japan Agency for Marine-Earth Science and Technology, NASA, NOAA

Contact: Gisela Speidel
gspeidel@hawaii.edu
808-956-9252
University of Hawaii ‑ SOEST

Public Release: 20-Feb-2014
NASA's TRMM satellite saw extreme rainfall from Tropical Cyclone Guito
Tropical Cyclone Guito has been a powerful rainmaker, and fortunately, data from NASA's TRMM satellite shows that the heaviest rainfall has occurred over the open waters of the Mozambique Channel and not over land.
NASA

Contact: Rob Gutro
robert.j.gutro@nasa.gov
NASA/Goddard Space Flight Center

Public Release: 20-Feb-2014
Diversity and Distributions
Legal harvest of marine turtles tops 42,000 each year
A new study has found that 42 countries or territories around the world permit the harvest of marine turtles -- and estimates that more than 42,000 turtles are caught each year by these fisheries.

Contact: Eleanor Gaskarth
e.f.gaskarth@exeter.ac.uk
07-827-309-332
University of Exeter

Public Release: 19-Feb-2014
2014 Ocean Sciences Meeting
What is El Nino Taimasa?
During a very strong El Nino, sea level can drop in the tropical western South Pacific and tides remain below normal for up to a year, especially around Samoa. Scientists at the International Pacific Research Center, University of Hawaii, and the University of New South Wales, are studying the climate effects of this variation of El Nino, naming it 'El Nino Taimasa' after the wet stench of coral die-offs, called 'taimasa' by Samoans.
National Science Foundation, International Pacific Research Center, Japan Agency for Marine-Earth Science and Technology, NASA, NOAA, Joint Institute for Marine and Atmospheric Research

Contact: Gisela Speidel
gspeidel@hawaii.edu
808-956-9252
University of Hawaii ‑ SOEST

Public Release: 19-Feb-2014
Biota Neotropica
Peru's Manu National Park sets new biodiversity record
When it comes to amphibian and reptile biodiversity, the eastern slopes of the Andes mountains in South America stand out. A new survey of 'herps' in and around Manu National Park in Peru by UC Berkeley postdoc Rudolf von May and his Illinois colleagues Alessandro Catenazzi and Edgar Lehr recorded a greater biodiversity -- 287 species, some new to science -- than any other protected area in the world, including the previous leader in Ecuador.
National Science Foundation, National Geographic Society

Contact: Robert Sanders
rlsanders@berkeley.edu
510-643-6998
University of California - Berkeley

Public Release: 19-Feb-2014
Ecology and Society
Surveys find that despite economic challenges Malagasy fishers support fishing regulations
Scientists from the Wildlife Conservation Society, the ARC Centre of Excellence for Coral Reef Studies, and other groups have found that the fishing villages of Madagascar -- a country with little history of natural resource regulation -- are generally supportive of fishing regulations, an encouraging finding that bodes well for sustainable strategies needed to reduce poverty in the island nation.

Contact: John Delaney
jdelaney@wcs.org
718-220-3275
Wildlife Conservation Society

Public Release: 19-Feb-2014
NASA satellite sees a ragged eye develop in Tropical Cyclone Guito
NASA satellite data was an 'eye opener' when it came to Tropical Cyclone 15S, now known as Guito in the Mozambique Channel today, Feb. 19, 2014.
NASA

Contact: Rob Gutro
robert.j.gutro@nasa.gov
NASA/Goddard Space Flight Center

Public Release: 19-Feb-2014
Progress in Oceanography
Stratification determines the fate of fish stocks in the Baltic Sea
In the Baltic Sea, two cod stocks evolve independently. Also, the juveniles of two economically important flatfish species, flounder and plaice, live there within limited space. This is possible due to the different salinity within this inland sea. Scientists of GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany and the National Institute of Aquatic Resources, Denmark, explain how these hydrographic conditions affect the distribution of fish eggs and growth of economically important fish stocks.

Contact: Maike Nicolai
mnicolai@geomar.de
49-431-600-2807
Helmholtz Centre for Ocean Research Kiel (GEOMAR)

Public Release: 19-Feb-2014
Nature
The ups and downs of early atmospheric oxygen
The period of extended low oxygen spanning from roughly two to less than one billion years ago was a time of remarkable chemical stability in the Earth's ocean and atmosphere. A University of California, Riverside team of biogeochemists reports that oxygen was much lower than previously thought during this important middle chapter in Earth history, which likely explains the low abundances and diversity of eukaryotic organisms and the absence of animals.
National Science Foundation, NASA

Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6397
University of California - Riverside

Public Release: 19-Feb-2014
Nature Communications
Pond-dwelling powerhouse's genome points to its biofuel potential
Duckweed is a tiny floating plant that's been known to drive people daffy. It's one of the smallest and fastest-growing flowering plants that often becomes a hard-to-control weed in ponds and small lakes. But it's also been exploited to clean contaminated water and as a source to produce pharmaceuticals. Now, the genome of Greater Duckweed (Spirodela polyrhiza) has given this miniscule plant's potential as a biofuel source a big boost.
DOE/Office of Science, Selman Waksman Chair in Molecular Genetics

Contact: David Gilbert
degilbert@lbl.gov
925-296-5643
DOE/Joint Genome Institute

Public Release: 18-Feb-2014
Mechanisms of Development
Research of zebrafish neurons may lead to understanding of birth defects like spina bifida
Using zebrafish, scientists can determine how individual neurons develop, mature and support basic functions like breathing, swallowing and jaw movement. Researchers at the University of Missouri say that learning about neuronal development and maturation in zebrafish could lead to a better understanding of birth defects such as spina bifida in humans.

Contact: Jeff Sossamon
573-882-3346
University of Missouri-Columbia

Public Release: 18-Feb-2014
NASA sees Tropical Cyclone 15S form in the Mozambique Channel
NASA's Aqua satellite passed over Tropical Cyclone 15S as it formed in the Mozambique Channel on Feb. 18 and the AIRS instrument aboard gathered infrared data on its cloud top temperatures and potential.
NASA

Contact: Rob Gutro
robert.j.gutro@nasa.gov
NASA/Goddard Space Flight Center

Showing releases 1126-1150 out of 1320.

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