Navigation Links
Increase in metal concentrations in Rocky Mountain watershed tied to warming temperatures
Date:9/10/2012

Warmer air temperatures since the 1980s may explain significant increases in zinc and other metal concentrations of ecological concern in a Rocky Mountain watershed, reports a new study led by the U.S. Geological Survey and the University of Colorado Boulder.

Rising concentrations of zinc and other metals in the upper Snake River just west of the Continental Divide near Keystone, Colo., may be the result of falling water tables, melting permafrost and accelerating mineral weathering rates, all driven by warmer air temperatures in the watershed. Researchers observed a fourfold increase in dissolved zinc over the last 30 years during the month of September.

Increases in metals were seen in other months as well, with lesser increases seen during the high-flow snowmelt period. During the study period, local mean annual and mean summer air temperatures increased at a rate of 0.5 to 2.2 degrees Fahrenheit per decade.

Generally, high concentrations of dissolved metals in the Snake River watershed are primarily the result of acid rock drainage, or ARD, formed by natural weathering of pyrite and other metal-rich sulfide minerals in the bedrock. Weathering of pyrite forms sulfuric acid through a series of chemical reactions, and pulls metals like zinc from minerals in the rock and carries these metals into streams.

Increased sulfate and calcium concentrations observed over the study period lend weight to the hypothesis that the increased zinc concentrations are due to acceleration of pyrite weathering. The potential for comparable increases in metals in similar Western watersheds is a concern because of impacts on water resources, fisheries and stream ecosystems. Trout populations in the lower Snake River, for example, appear to be limited by the metal concentrations in the water, said USGS research biologist Andrew Todd, lead researcher on the project.

"Acid rock drainage is a significant water quality problem facing much
'/>"/>

Contact: Diane McKnight
Diane.McKnight@colorado.edu
303-492-4687
University of Colorado at Boulder
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Increase in Arctic shipping poses risk to marine mammals
2. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
3. Fertilizer use responsible for increase in nitrous oxide in atmosphere
4. NIST/UMass study finds evidence nanoparticles may increase plant DNA damage
5. Study finds soda consumption increases overall stroke risk
6. Scientists have discovered genes that increase the risk of osteoporosis and fractures
7. Family history of liver cancer increases risk of developing the disease
8. Research shows how PCBs promote dendrite growth, may increase autism risk
9. Increased fructose consumption may deplete cellular energy in patients with obesity and diabetes
10. NIH-led study finds genetic test results do not trigger increased use of health services
11. Flapping protective wings increase lift
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/26/2015)... , March 26, 2015 The ... social, recreation and athletic club, today announced it has ... allow freedom of movement for members and staff, while ... a comprehensive process, we selected FST,s IMID Access system ... convenience for our members and staff, in addition to ...
(Date:3/23/2015)... 23, 2015 SoundView Technology Group issues a new ... NXTD ) Wocket smart wallet. SoundView was one of the selected ... experience with the Wocket in multiple scenarios and outlets. ... and other retailers, making both debit and credit card payments.  ... says, "If the company meets their plans in 2015, it ...
(Date:3/20/2015)... DUBLIN , Mar. 19, 2015 Research and Markets ... the "Hand Geometry - Global Strategic Business Report" ... worldwide markets for Hand Geometry in US$ Thousands. The report ... , Japan , Europe ... America , and Rest of World. Annual ...
Breaking Biology News(10 mins):Granite Club First Private Club in North America to Implement FST Biometrics Secure Access Solution, as Part of Multi-million Dollar Expansion 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 3Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 4Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 2Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 4
... the cell, gateways through which critical signals and chemicals are ... gateways -- proteins that span the cell membrane and connect ... remain, for the most part, black boxes with little ... of intense interest to scientists as they are the targets ...
... Oct. 30, 2010 Researchers at the Institute for Regenerative ... an early, but important, milestone in the quest to grow ... use human liver cells to successfully engineer miniature livers that ... human livers. The next step is to see if the ...
... flies by masquerading as mushrooms. Goblin spiders lurk unseen in ... as haunting as the macabre costumes worn on city streets, ... in the Division of Invertebrate Zoology at the American Museum ... DRACULA ORCHIDS ,According to Grimaldi and colleagues, fruit ...
Cached Biology News:Chemists concoct new agents to easily study critical cell proteins 2Researchers engineer miniature human livers in the lab 2Dracula orchids and goblin spiders 2Dracula orchids and goblin spiders 3
(Date:4/24/2015)... , April 24, 2015 /PRNewswire/ - BioAmber Inc. ... Bayer MaterialScience as the supplier of bio-succinic acid ... bio-based polyurethanes for textile applications that Bayer MaterialScience ... has launched IMPRANIL ® eco, a series ... that reaches as high as 65%.  IMPRANIL ® ...
(Date:4/24/2015)... April 24, 2015 Seoul Semiconductor ... for various applications in the lighting market. ... installations of this technology in emerging markets such ... a wide range of applications such as streetlight ... decorative lighting. , First launched in 2005 the ...
(Date:4/23/2015)... -- BioTE Medical President and Founder Gary Donovitz ... - Avoiding Over-Medication through Natural Hormone Balance" (ISBN: 9780990706458) ... at JW Marriott / Ritz Carlton Grande Lakes April ... Happier, is a welcomed response to many men and ... higher quality of life thanks to bio-identical hormone replacement ...
(Date:4/23/2015)... , April 23, 2015  Cryoport, Inc. (OTCBB: ... logistics solutions for the life sciences industry, today ... cryogenic logistics solutions within the animal husbandry market ... Farms to support the shipment of equine semen ... horse Stallions. Animal husbandry is ...
Breaking Biology Technology:Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 2Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 3Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 4Acrich Technology from Seoul Semiconductor Adopted in Installations Worldwide 2Release and Book Signing of BioTE Medical President Gary Donovitz M.D. 'Age Healthier Live Happier' at Age Management Medicine Group (AMMG) Conference 2Release and Book Signing of BioTE Medical President Gary Donovitz M.D. 'Age Healthier Live Happier' at Age Management Medicine Group (AMMG) Conference 3Cryoport to Support the Equine Animal Husbandry Market Through Agreement with Yancey Farms 2Cryoport to Support the Equine Animal Husbandry Market Through Agreement with Yancey Farms 3
... 13 , - Announce Winners of ... Elsevier, the world,s leading research publisher of ... Institutions announced,today winners of the first annual ... to recognize outstanding young scientists and researchers,in ...
... driving now includes personalized ... progress tracking, ... shipping InSight Version 1.1 for Windows.,This new release includes enhancements that ... are making as they progress,through the software, providing a highly personalized ...
... SAN DIEGO, Nov. 13 Ambrx Inc. ... ARX201, the company,s,long-acting human growth hormone (hGH) analogue ... factor I (IGF-I) levels,while delivering an acceptable safety ... The results of this trial support further,evaluation of ...
Cached Biology Technology:Elsevier and the Association of Southeast Asian Institutions 2Elsevier and the Association of Southeast Asian Institutions 3Elsevier and the Association of Southeast Asian Institutions 4Posit Science(R) Corporation Announces the Release of InSight(TM) 1.1 2Clinical Data Show Long-Acting Human Growth Hormone ARX201 is Safe and Well Tolerated 2Clinical Data Show Long-Acting Human Growth Hormone ARX201 is Safe and Well Tolerated 3
...
Hamster Serum; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin levels; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin levels....
... offered in several versions. The Captiva 0.2 ... are ideal to prepare precipitated protein samples ... and necessary to prevent clogging of expensive ... fiber and 20 um polypropylene filter plates ...
... Cy5 Post-Labeling Reactive Dye Pack, ... CyDye fluors specifically optimized for microarray ... 40000 pmol reactive dye per vial, ... to use, individually dispensed, and packed ...
Biology Products: