Navigation Links
Notre Dame researcher is studying role small dams play in pollution control
Date:3/28/2013

Sometimes, little things can add up to a lot.

In short, that's the message of a research study on small dams, streams and pollution by Steve Powers, a postdoctoral researcher at the University of Notre Dame's Environmental Change Initiative (ECI).

"Small dams, reservoirs and ponds trap water pollution, which provides an important benefit to water resources," Powers said. "This is especially relevant in agricultural lands of the Midwest U.S., where there are lots of small, but aging dams."

Although small individually, the sum total of the small reservoirs and ponds have a global surface area comparable to that of all large reservoirs added together.

Powers and his fellow researchers showed in detail how a small aging dam, which was more than 100 years old and located in agricultural Wisconsin, trapped water pollutants associated with fertilizer and manure runoff. They also showed an increase in downstream transport of nutrient pollution after the dam was removed, which occurred because of concerns about the dam's safety.

"Many small dams are threatened by long-term structural decline and are also filling with sediment," Powers said. "If we don't better incorporate how small dams affect the movement of water and wastes through the environment, their benefit to downstream water quality could be lost. Meanwhile, legacy sediment and pollution currently trapped behind dams could release as dams lose their water storage capacity, fall apart, or are removed deliberately."

Powers notes that there is a crucial need to gain a better understanding of what small dams mean for our water quality before they crumble and disappear.

"I am continuing to work on the subject at a broader regional scale by looking at hundreds of stream and river monitoring stations throughout the Midwestern U.S. to detect signals of dams," he said. "One current goal is to try and figure out which regions are most vulnerable to water quality changes caused by accumulation of sediment and phosphorus behind dams."

The research paper appeared in the Journal of Geophysical Research-Biogeosciences.

Powers is conducting his research as part of the Notre Dame Environmental Change Initiative's Land Use Project. The Environmental Change Initiative conducts policy-oriented research designed to help policy-makers manage environmental changes.


'/>"/>

Contact: Steve Powers
powers_s@nd.edu
574-631-9322
University of Notre Dame
Source:Eurekalert

Related biology news :

1. Notre Dame researchers are using new technologies to combat invasive species
2. Notre Dame research may have important implications for combating diabetes
3. Cargill expands support of Notre Dame Haiti Program
4. Notre Dame research reveals migrating Great Lakes salmon carry contaminants upstream
5. Notre Dame research could improve sustainability and cost effectiveness of wastewater treatment
6. Notre Dame research could provide new insights into tuberculosis and other diseases
7. Notre Dame researcher is shedding light on how jaws evolve
8. Notre Dame establishes professorships in adult stem cell research
9. Notre Dame researchers using novel method to combat malaria drug resistance
10. New paper by Notre Dame researchers describes method for cleaning up nuclear waste
11. University of Montreal researchers discover how drug prevents aging and cancer progression
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/13/2017)... 2017 According to a new market research report ... Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region ... expected to grow from USD 14.30 Billion in 2017 to USD 31.75 ... ... MarketsandMarkets Logo ...
(Date:4/11/2017)... No two people are believed to ... York University Tandon School of Engineering and Michigan ... partial similarities between prints are common enough that ... and other electronic devices can be more vulnerable ... in the fact that fingerprint-based authentication systems feature ...
(Date:4/5/2017)... Allen Institute for Cell Science today announces the launch ... dynamic digital window into the human cell. The website ... deep learning to create predictive models of cell organization, ... suite of powerful tools. The Allen Cell Explorer will ... resources created and shared by the Allen Institute for ...
Breaking Biology News(10 mins):
(Date:8/15/2017)... Linda, Ca (PRWEB) , ... August 15, 2017 ... ... coffee production and is threatened by various biotic and abiotic factors. During this ... complex evolutionary history of coffee, as well as gain a better understanding of ...
(Date:8/14/2017)... ... ... The Conference Forum has confirmed the one-day agenda for the ... 2017 at the Marriott Copley Place in Boston, MA. , Returning as program chair ... Pfizer Innovative Research Lab, Pfizer, who leads 19 industry speakers in discussing how and ...
(Date:8/11/2017)... (PRWEB) , ... August 11, 2017 , ... ... food production, and, in particular, more natural alternatives to synthetic ingredients,” said Matt ... of Third Wave, with the established manufacturing presence and know-how of Biorigin will ...
(Date:8/10/2017)... ... August 09, 2017 , ... Each year in the United States more than ... live an independent lifestyle and, even worse, the one-year mortality rate is high, ranging ... the University of California Davis Medical Center (Sacramento) and Second Xiangya Hospital of the ...
Breaking Biology Technology: