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:6/4/2019)... (PRWEB) , ... June 04, 2019 , ... ... manufacturing of orthopedic medical devices, today announced Q1-19 revenues of $31M, up 12% ... combined with successful roll-out of strategic investments & operational excellence initiatives worldwide. , ...
(Date:6/4/2019)... SAN DIEGO (PRWEB) , ... June 04, 2019 , ... ... Hall of Fame recipients. The recognition, which honors hospitality excellence, is given only to ... a Certificate of Excellence for five consecutive years. , To qualify for ...
(Date:5/31/2019)... , ... May 30, 2019 , ... ... testing company, and Mayo Clinic, have documented significant differences in the prevalence of ... and ethnic populations compared to non-Hispanic White women. Results will be presented at ...
Breaking Biology News(10 mins):
(Date:5/4/2019)... ... May 03, 2019 , ... ... of the Dakila Pesquisas Association, the scientist and ufologist Urandir Fernandes de Oliveira, ... (DF). Urandir detailed the results of some research carried out by the association, ...
(Date:5/2/2019)... ... April 30, 2019 , ... ... 9001:2015 standard, REPROCELL USA Inc. has demonstrated its ability to provide various ... Inc. aims to enhance customer satisfaction through the effective implementation of its ...
(Date:5/2/2019)... , ... May 02, 2019 , ... Stay on top ... medical device and food industries. Access to all webinars is free, so be sure ... in your field! , Visit http://www.xtalks.com to see our upcoming webinars: , ...
(Date:5/2/2019)... ... May 02, 2019 , ... Boston Robotic Hair Restoration announces ... are the days of painful hair transplant procedures. Boston Robotic Hair Restoration offers ... only robotic intelligent solution to offer a minimally invasive procedure. With the ARTAS® ...
Breaking Biology Technology:
Cached News: