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Latest Estuary Stories

coastal dead zone
2014-05-19 12:44:34

Brett Smith for redOrbit.com - Your Universe Online Containing dissolved oxygen concentrations of less than 2 or 3 parts per million, hypoxic waters in estuaries and sections of coastline are essentially “dead zones” where life cannot exist. According to a new study in the journal Nature Geoscience, iron discharged from continental sediments acts as a limiting switch that could prevent coastal waters from creating a runaway feedback loop that leads to less and less dissolved oxygen...

Rhode Island Nitrogen Cycle Differs In Bay And Sound
2014-04-29 17:17:11

Brown University A new study reports that anammox, a key process in the nitrogen cycle, is barely present in Narragansett Bay even though it’s a major factor just a little farther out into Rhode Island Sound. Scientists traced that to differences between bay and sound sediments, but that raises new questions about what’s going on in the Bay to account for those. Rhode Island’s geography is famously small, but new measurements of the nitrogen cycle in its waterways suggest that...

2014-04-10 09:45:00

Oyster aquaculture in the Potomac River estuary could result in significant improvements to water quality, according to a new NOAA and U.S. Geological Survey study published in the journal Aquatic Geochemistry. All of the nitrogen currently polluting the Potomac River estuary could be removed if 40 percent of its river bed were used for shellfish cultivation, according to the joint study. The researchers determined that a combination of aquaculture and restored oyster reefs may provide...

2014-03-31 09:45:55

Members of the Cell Biology in Environmental Toxicology group have discovered evidence of "feminization" of male fish in the estuaries of Gernika, Arriluze, Santurtzi, Plentzia, Ondarroa, Deba and Pasaia. The first cases (2007-2008) were detected in Urdaibai, and the most recent data confirm that they are also taking place in other estuaries. Pollutants acting as oestrogens are responsible for this phenomenon which, among other changes, is causing ovocytes —immature ova— to appear in male...

2014-02-19 11:05:43

A Dartmouth-University of Connecticut study of the northeast United States shows that methylmercury concentrations in estuary waters -- not in sediment as commonly thought -- are the best way to predict mercury contamination in the marine food chain. The findings raise questions about current mercury cleanup practices, and shed new light on the different ways in which the toxic metal bioaccumulates in aquatic species, from bottom-dwelling worms to forage fish to larger fish consumed by...

Million Dollar Grand Challenge Issued For Dead Zone Solutions
2014-02-19 04:11:12

redOrbit Staff & Wire Reports - Your Universe Online In response to President Obama’s call for institutions and philanthropists to help find solutions to the world’s most pressing issues, Tulane University announced Monday that it would offer a $1 million prize to the researcher or entrepreneur who devises the best plan to combat annual “dead zones” in lakes and oceans. In a statement, the university said that it was soliciting innovative solutions to battle hypoxia, or...

Long Island Barrier Still Intact After Hurricane Sandy
2013-12-12 19:18:36

Alan McStravick for redOrbit.com – Your Universe Online On August 29 of last year, Hurricane Sandy, noted as the most powerful hurricane of the 2012 season, made landfall in southern New Jersey, wreaking havoc across much of the eastern seaboard. Residents of the area faced property destruction and crisis situations like flooding and massive, long-term power outages just in time for a particularly frigid autumn. Now more than a year out from the superstorm, a University of Texas led...

Widespread Contamination Caused By Mine Metals At Maine Superfund Site
2013-09-20 09:29:35

Dartmouth College Dartmouth study is among first to analyze open pit mining's impact on US estuaries, coastal food web Toxic metals from the only open pit mine in an estuary system in the United States are widespread in nearby sediment, water and fish and may be affecting marine and coastal animals that feed on them beyond the mine site, a new Dartmouth study finds. Mining contamination's effects on human health and aquatic and terrestrial wildlife is well documented in the United...

Estuaries Feeling The Effects Of Climate Change
2013-08-08 04:36:02

April Flowers for redOrbit.com - Your Universe Online A new report from the National Oceanic and Atmospheric Administration's (NOAA) National Ocean Service reveals the nation's 28 National Estuarine Research Reserves (NERR) are experiencing the negative effects of human and climate-related stressors. The NERR System serves as a network of "living laboratories" around the country. Each represents a unique biogeographically diverse coastal ecosystem. The national study, Climate...

Crustacean Sand-dwellers Suffering Localized Extinctions In Southern California
2013-07-18 11:14:11

University of California - Santa Barbara Two types of small beach critters -- both cousins of the beloved, backyard roly-poly -- are suffering localized extinctions in Southern California at an alarming rate, says a new study by UC Santa Barbara scientists. As indicator species for beach biodiversity at large, their disappearance suggests a looming threat to similar sand-dwelling animals across the state and around the world. Led by David Hubbard and Jenifer Dugan of UCSB's Marine...


Latest Estuary Reference Libraries

Mudflats
2013-04-19 21:07:34

Mudflats, or otherwise known as tidal flats, are coastal wetlands that form when mud is left behind by tides or rivers. They’re found in sheltered regions such as bayous, lagoons, estuaries, and bays. Mudflats might be seen geologically as exposed layers of bay mud, a result from the deposition of estuarine silts, marine animal detritus, and clays. The majority of the sediment in a mudflat is within the intertidal zone, therefore the flat is submerged and exposed about twice per day. In...

Salt Marsh
2013-04-19 21:04:15

A salt marsh, also otherwise known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone that lies between the land and the open salt water or brackish water that is routinely flooded by the tides. It’s dominated by dense stands of salt-tolerant plants, for example, herbs, grasses, or low shrubs. These plants originate from all around the globe and are important to the stability of the salt marsh in trapping and binding sediments. Salt marshes...

River Delta
2013-04-18 22:36:25

A river delta is a landform that is created at the mouth of a river, where the river flows into an ocean, estuary, lake, sea, or reservoir. These deltas are built from the deposition of the sediment that is carried by the river as the flow exit’s the mouth of the river. Over a long period of time, this deposition constructs the distinctive geographic pattern of a river delta. The creation of a delta is made up of three core forms: the bottomset, topset, and foreset/frontset. Bottomset...

Sea of Azov
2013-04-18 19:13:38

The Sea of Azov, known is Classical Antiquity as Lake Maeotis, is a sea towards the south of Eastern Europe. It’s linked by the narrow Strait of Kerch to the Black Sea towards the south and is bordered in the north by mainland Ukraine, in the east by Russia, and in the west by the Ukraine’s Crimean Peninsula. The Kuban and Don are the major rivers that flow into the Sea of Azov. This sea is the shallowest in the world with the depth varying between 2 ft 11 inch and 46 ft. There’s a...

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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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