HOME >> BIOLOGY >> NEWS
Razing old dams solves some problems, creates new ones

MADISON -- An old joke among river ecologists goes like this: "What does a fish say when it hits a cement wall?" Pause. "Dam!"

Today, fewer fish are banging their heads against these barriers, due in large part to Wisconsin's efforts to tear down dozens of deteriorating dams. Razing these structures may alleviate many wildlife headaches, but it also may create new problems, according to research from the University of Wisconsin-Madison.

Emily Stanley, a river ecologist at UW-Madison's Center for Limnology, has found that dam removal allows not just fish and canoes, but also damaging nutrients, to barge through the water system. Results of the study, which focused on dam removal sites along the Baraboo River and Koshkonong Creek in Wisconsin, are published in the August 2002 issue of the journal BioScience.

Beginning in the mid-1800s, communities nationwide built dams. While these structures generated power, controlled floods and stimulated economic growth, they transformed the ecosystem by blocking the movement of organisms, worsening the water quality and altering downstream flow and channel formation. As Stanley sums up: "Dams do bad things to rivers."

Today, there are nearly 4,000 dams in Wisconsin, and several million can be found throughout the United States. Fewer than 60 rivers in the country retain more than 62 miles of free-flowing channel.

Yet, these numbers are beginning to change: "Many of the dams are getting old," explains Stanley. "Time has taken its toll on these structures and transformed them from productive sites of commerce to safety risks."

Tearing them down, rather than restoring them, may seem like the best option, both environmentally and economically. In fact, 120 dams were razed last year in the United States, and, over the years, more than 60 have been torn down in Wisconsin.

"It's a moment in history to see water flow again for the first time in more than 150 years and to watch fi
'"/>

Contact: Emily Stanley
ehstanley@facstaff.wisc.edu
608-263-2567
University of Wisconsin-Madison
3-Sep-2002


Page: 1 2 3

Related biology news :

1. LICR/UCSD team solves mystery of centromeres
2. Researchers discover protein that dissolves amyloid fibers
3. Purdue team solves structure of West Nile virus
4. Purdue biologists spotlight solves mysteries of photosynthesis, metabolism
5. Newly invented Endometrial Function Test (EFT®) solves the puzzle of unexplained infertility
6. Research reveals how an acid dissolves, molecule by molecule
7. Rutgers biomedical engineering professor solves golf grip mysteries
8. Purdue researcher solves sorghum mystery
9. One theory solves two ancient climate paradoxes
10. Pain-relief drug may prevent lung problems, blindness in premature infants
11. Cave men diets offer insights to todays health problems, study shows

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


(Date:7/31/2018)... ... July 31, 2018 , ... GSL Biotech ... with LabArchives , the leading cloud-based Electronic Lab Notebook (ELN) platform. , ... researchers to store all of their research data records in a secure, compliant online ...
(Date:7/29/2018)... ... 29, 2018 , ... Dr. William Plikerd, an evidence-based energy healer, today announces ... immunity and to combat inflammation and autoimmune disorders. , The preclinical research assessed ... reported:, Up to 260% increase overall immunity as seen ...
(Date:7/26/2018)... ... July 25, 2018 , ... Boston Biotech Conferences will ... 4, 2018 at The Hilton Boston Back Bay Hotel. This peer-to-peer meeting provides ... and dissect the most relevant deals in biotech. , George Golumbeski recently joined ...
Breaking Biology News(10 mins):
(Date:8/7/2018)... ... August 06, 2018 , ... Slone Partners, ... the placement of Dr. Paul Harney as President, North America at Prescient Healthcare ... and enhancing client satisfaction. He was also named to Prescient’s Board of Directors. ...
(Date:7/31/2018)... ... July 31, 2018 , ... ... years, announces the launch of their new website. The new website has been ... the site. Mahoney partnered with Proceed Innovative to build a website created for ...
(Date:7/25/2018)... ... July 25, 2018 , ... Vium, Inc. ... Digital Vivariumâ„¢ and Vium Cloud approach to accelerate preclinical drug discovery and development, ... the company announced the appointment of Jeff Caron to the newly formed role ...
(Date:7/24/2018)... ... July 24, 2018 , ... R3 Stem Cell is now offering regenerative therapies ... offered by Double Board Certified providers, with outcomes significantly improving patient quality of life. ... have done nothing to help repair and regenerate damaged lung tissues. Stem cell ...
Breaking Biology Technology:
Cached News: