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Dam in Biological News

Researchers examine role of soil patterns in dam restoration

MADISON Looking at the site today, it's easy to forget that a dam and pond stood for 43 years on the University of Wisconsin-Madison's Franbrook Farm Research Station in southwestern Wisconsin. All traces of the structure are gone, and acres of plants, both native and weedy, now carpet the floor ...

Beavers: Dam good for songbirds

NEW YORK (October 8, 2008) The songbird has a friend in the beaver. According to a study by the Wildlife Conservation Society (WCS), the busy beaver's signature dams provide critical habitat for a variety of migratory songbirds, particularly in the semi-arid interior of the West. ...

Wetlands expert: China should think outside the flooding box with Three Gorges Dam

COLUMBUS, Ohio China's farmers and merchants should take advantage of new agricultural and business opportunities that could help mitigate some effects of the annual flooding behind the Three Gorges Dam on the Yangtze River, according to an Ohio State University wetland expert. The level of wa...

Technology improves salmon passage at hydropower dams

... System (JSATS). The JSATS-tagged fish were released from the Lower Granite dam on the Snake River, where hydrophone receivers in the river picked up small... through Modeling. Modeling Juvenile Salmon Egress Conditions in The Dalles dam Tailrace Using Computational Fluid Dynamics. Authors: Marshall C. Richmond,...

Obama Budget Level Funds Career Technical Education

...ociation of State Directors of Career and Technical Education Consortium. "Level funding this program is like putting a temporary patch on a hole in a dam that is ready to burst. Demand for these programs is up. The pace of technological change is increasing. Equipment needs are growing. To be able to su...

Conference tackles technology needed to address climate change

...nstitute of Canada as the principle organizer in partnership with nine of its member societies: IEEE, Canadian Society for Civil Engineering, Canadian dam Association, Canadian Nuclear Society, Canadian Geotechnical Society, Canadian Society for Mechanical Engineering, Canadian Society for Engineering Ma...

Indigenous peoples at world summit to share climate change observations, coping techniques

...heir practices restricted. Traditional drought-related practices used to hedge against normal climate variation include: Sophisticated small dam systems to capture and store rainfall; Temporary migration; Planting diverse varieties of crops simultaneously; and Using alternative agricultural...

2009 AIBS Media Award

...ogen in boreal beaver ponds in northern Canada, the coasts of Georgia and New Jersey, and the Chesapeake Bay. Bushaw-Newton has studied the effects of dam removal on aquatic ecosystems and is presently looking at microbial dynamics of systems found in the Chesapeake Bay watershed. John Carey, a senior...

Exploring the dynamic relationship between health and environment

...raction of social, ecological, and environmental factors," explains CBC post-doctoral fellow Andrs Gmez. "Globally, environmental changedeforestation, dam building, urbanization, and irrigation projectshas had an influence on the epidemiology of many infectious and non-infectious diseases. But with new p...

USGS Science Picks

...ng the Alsek River. An additional advance of approximately 100 meters will completely block the river, creating a glacier-dammed lake. Failure of this dam feature would result in downriver flooding to the Gulf of Alaska, passing near or through the community of Dry Bay in the United States. Glacier surge...

Transporting juvenile salmon hinders adult migration

...Keefer says. Managers could barge fewer juveniles, but then more fish would die while trying to pass the dams. They could also release more water over dam spillways to help juveniles pass downstream, but that would reduce the amount of energy the dams produce. A third option is to slow down the barges so...

AGU journal highlights: Nov. 11, 2008

...Michigan State University, East Lansing, Michigan, U.S.A.; now at Department of Biology, Duke University, Durham, North Carolina, U.S.A.; Remke L. Van dam and David W. Hyndman: Department of Geological Sciences, Michigan State University, East Lansing, Michigan, U.S.A. Source: Geophysical Research Le...

Salmon smolt survival similar in Columbia and Fraser rivers

...tness of the smolts that are captured at the Columbia River's Lower Granite dam varies significantly. "One day, we'd get a group of fish that were relea...ber of resource agencies and the data is available online. Below Bonneville dam and in the Fraser River they had to use acoustic tags, which are bigger, to...

Similar survival rates for Pacific salmon in Fraser, Columbia Rivers raises new questions

... it was only possible to measure juvenile survival where salmon gathered in dam bypasses like those in the Columbia and Snake Rivers. The lower Columbia...ific team aims to clarify with future studies using POST technology whether dam passage in itself has long-term detrimental effects that impact salmon's oc...

Biological invasions increasing due to freshwater impoundments, says CU-Boulder study

... drive the construction of new reservoirs to increase water supplies in many regions of the United States, including the Midwest, said the authors. dam construction and biological invasions are major contributors to the biodiversity crisis in freshwater ecosystems, which exhibit higher rates of extinc...

National Research Council report on security at federally managed dams

... and regional and area office staff for day-to-day dam operations. In contrast, the security system put ...ncident are local law enforcement, although Hoover dam has an on-site police department and Grand Coulee dam has a security force trained as first reponders. ...

ESA to feature wide range of UW-Madison presentations

...) Scientists attempt prairie restoration after dam removal Not only does Wisconsin have more dam.... By restoring natural flows to streams and rivers dam removal offers many benefits to fish communities. ... species in dewatered sediments following a recent dam removal in southwestern Wisconsin (Thursday, Aug. ...

August 2008 Geology and GSA Today media highlights

... science article studies the impact of Glen Canyon dam in Grand Canyon on sandbar ecosystems along the Co...ew are as impressive as the 216-m-high Glen Canyon dam that sits astride Colorado River and supplies elec...Powell and eliminating spring snowmelt floods, the dam has, however, significantly impacted the Colorado ...

River damming leads to dramatic decline in native fish numbers

...scale: recent work in both Texas and the Pacific Northwest suggests that increased suspended sediment favours native fish larvae in these areas. Thus, dam removal may be critical for rehabilitating fish populations across the US, and almost certainly in other, less studied, areas of the world as well," s...

Rainfall and river networks prove accurate predictors of fish biodiversity

...ect biodiversity, said Rodrguez-Iturbe. Or if you have a change in the connectivity of rivers due to human activity -- for example, the building of a dam -- our model can also measure how that will affect the numbers and distributions of species. River networks act as ecological corridors and as such...

Arable land can have a negative impact on air quality

...m the Ukraine. Blown by the wind It was a warm, sunny day in spring and a strong wind was blowing over the parched fields near the Kachowkaer dam on the lower reaches of the Dnjepr river. There had been no rain for weeks. The black soil here in the south of the Ukraine is one of the most fertile...

UC biology prof traces his roots to the first Earth Day

...aware, says Uetz with pride. One of our members was a lawyer, and was elected to the New Castle County Council, and we were successful in preventing a dam and reservoir. My friend then ran for office at a national level, and I helped on his upstart campaign as an environmental advisor before I left for I...

Fuzzy logic water quality

...ing, economics and political development float on the availability and distribution of these freshwater resources. However, in many parts of the world dam construction, irrigation development, and flood mitigation have led to an increased incidence of diseases, such as malaria, Japanese encephalitis, sch...

2008 Ocean Sciences Meeting -- media advisory 2

...e land and water use in the drainage basin of great rivers such as the Amazon and the Mekong control river biogeochemistry and that activities such as dam construction and changing agricultural practices alter conditions at various scales. A team studying the Mississippi and Orinoco Rivers, finds much gr...

Dam the Red Sea and release gigawatts

...ill exploit the evaporative cycle and influx of seawater to generate vast quantities of electricity. Geochemical engineer Schuiling suggests that a dam Bab-al-Mandab could be used to stem the inflow of seawater into the highly evaporative Red Sea with the potential of generating 50 gigawatts of power....

More comprehensive analysis of Klamath River basin needed to aid decision makers

...d that the IFS recommendation for increased flows downstream from Iron Gate dam probably would benefit the river's anadromous fishes in general -- although..., and omissions of factors likely to influence river flows at the Iron Gate dam gauge site. For example, the NFS does not factor in the role of groundwate...

International team of scientists warns of climate change's impact on global river flow

...tly than reactive efforts taken only once problems have arisen. Proactive actions include stormwater and sediment management, channel reconfiguration, dam removal, land acquisition and riparian management. This report calls attention to significant risks facing many of the worlds major rivers and tho...

Canada's pristine freshwater fisheries at risk

...e Conservation Society, looming development, including forestry, mining and dam construction, threatens this pristine region of untouched forests, wetlands..."The fact that this region still contains major watersheds without a single dam and few roads makes this a world renowned destination for recreational fish...

Canada's pristine freshwater fisheries at risk

...e Conservation Society, looming development, including forestry, mining and dam construction, threatens this pristine region of untouched forests, wetlands..."The fact that this region still contains major watersheds without a single dam and few roads makes this a world renowned destination for recreational fish...

An ancient bathtub ring of mammoth fossils

... lake formed behind ice that dammed the Clark Fork River. Sometimes the ice dam broke, releasing huge volumes—up to 500 cubic miles—of water in an instant. The dam would slowly reform creating a new Lake Missoula, and the cycle would repea...

Contaminants linked to sturgeon decline in Columbia river

... the Columbia River in some areas above Bonneville dam have high amounts of toxic contaminants in their l... and from areas downstream of Bonneville, the last dam on the river in its path to the Pacific Ocean. The...he reservoir behind the Bonneville Dam, the oldest dam on the river. "We believe that some contaminan...

Leave it to salmon to leave no stone unturned

...ties that they have caused the amount of algae and stream insects to decline. Scientists have long known of the habitat-changing activities such as dam building by beavers, but much of ecology has assumed that most other organisms simply react to the physical and chemical conditions around them. A han...

Scientists take aim at virulent bacteria by decoding machinery of key control enzyme

...ts have known for many years that an enzyme called dam (DNA adenine methyltransferase) plays a role in re...n many bacteria. Each time the bacteria reproduce, dam modifies the A (adenine) nucleotide in the DNA seq...Recently scientists have discovered a new role for dam methylation....

Alaskan puzzles, monitoring provide insight about North Pacific salmon runs

... transformed systems, Hilborn says. Other than fishing, the waterways studied by the Alaska Salmon Program are not subject to human activities such as dam building, logging or development. The money will help expand the scope of monitoring, fund new techniques for sampling and help make the UW databas...
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