HOME >> BIOLOGY >> NEWS
Pollution history documented through shell remains provides tool to study ecosystem change

(Blacksburg, Va.) -- In the early 1900s, there were 42 species of freshwater mussels in the North Fork of the Holston River in Southwest Virginia. There were 33 downstream of Saltville. Now there are only nine species of mussels downstream of Saltville, and none directly below Saltville. When Virginia Tech geosciences student Megan Brown of Colonial Heights, Va., decided to study the local extinctions of these creatures, some of which have been known to live 200 years and many of which are endangered species, she didn't want to have to use the traditional means of pulverizing them to measure chemical uptake.

At the joint meeting of the Northeastern and Southeastern Sections of the Geological Society of America, Brown will report on her non-invasive means to determine whether pollution or environmental stresses are threatening freshwater mussels. The GSA meeting is March 25-27 in Tysons Corner, Va.

Brown measured the mercury content in freshwater mussel shells in the river near Saltville, Va., where industry had polluted the river from 1950 until 1972, measured the damage done to the shells, and observed stages of recovery.

She looked at two sites upstream, unaffected by the pollution, at a site at Saltville, the point of the contamination, and at two sites downstream. "There was a very low level of mercury in shells upstream. I had to go 30 miles downstream to find a site with mercury levels at the background levels of the upstream sites," Brown says

Dead mussel shells reflected the levels of mercury, with high levels directly below Saltville and decreasing levels with increasing distance from Saltville. Brown examined shells to see if those from areas with no living populations looked different from shells in areas with living populations. She observed such characteristics as whether shells were still hinged together, external luster, edge preservation, and how broken they were.

"Wear could have been due to
'"/>

Contact: Susan Trulove
strulove@vt.edu
540-231-5646
Virginia Tech
27-Mar-2004


Page: 1 2

Related biology news :

1. Pollution from urban sprawl threatens aquatic life in major U.S. cities
2. Old Sins Industrial Metabolism, Heavy Metal Pollution, and Environmental Transition in Central Europe
3. Pollution makes crustaceans adapt rapidly
4. USGS Study Confirms An Urban Air-Pollution Problem At Mount Rainier National Park
5. Parasites, Not Pollution, Responsible For Some Frog Deformities, As Reported In The 30 April Issue Of Science
6. ASM Calls For Focus On Microbial Pollution Of Nations Water Supply
7. UF Researchers Show Common Compound Can Reduce Air Pollution
8. Educators Launch Internet Based Workshop On Pollution Prevention
9. New "Restaurant" For Bacteria May Improve Pollution Clean-Up
10. Solid Waste Incineration May Exceed Leaded Gasoline As Source Of Lead Air Pollution In Cities
11. West Coast Measurements Confirm Asian Air Pollution Can Travel To U.S.

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/29/2019)... ... ... In the development of biosimilars, the broad definition of the similarity concept in ... several manufacturers have been successful and numerous follow-on biologics are approved in the US ... analytical similarity is achieved in biosimilars based on recently approved products in the US. ...
(Date:3/27/2019)... ATLANTA (PRWEB) , ... March 26, 2019 , ... ... firm Greenberg Traurig, LLP , was a panelist at the National Academy of ... at NAS’ Keck Center. Holden, a member of the firm’s award-winning Pharmaceutical, Medical ...
(Date:3/25/2019)... ... March 25, 2019 , ... Researchers have found multiple applications ... it came into use by the scientific community. Keck Graduate Institute (KGI) Assistant ... to combine the power of CRISPR’s nucleic acid targeting with the ultra sensitivity ...
Breaking Biology News(10 mins):
(Date:3/19/2019)... ... March 19, 2019 , ... ... (Konica Minolta) today announced the formation of their inaugural Scientific Advisory Board. ... precision medicine that takes into account individual variability in genes, environment, and lifestyle ...
(Date:3/19/2019)... ... March 19, 2019 , ... ... largest hospital in Israel and the Middle East region, and Swiss-based CDMO ... Cocoon™ manufacturing platform. The partnership will enable Sheba to vastly streamline its ...
(Date:3/18/2019)... ... March 18, 2019 , ... For more than 15 years, USDM ... allow life science companies to easily comply with FDA 21 CFR Part 11 and ... a managed service delivering end-to-end GxP compliance from vendor audit through ongoing validation maintenance, ...
(Date:3/14/2019)... (PRWEB) , ... March 14, 2019 , ... ... for their facility in Oklahoma City, OK. EyeCRO joins the Department of Veterans ... Oklahoma Health Sciences Center as the fifth institution in Oklahoma to receive this ...
Breaking Biology Technology:
Cached News: