Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Poor stream health imperils fish

02.12.2010
"Of the 675 fish species found in southeastern waters, more than 25 percent are considered imperiled," Donald J. Orth, the Thomas H. Jones Professor of Fisheries and Wildlife Sciences in Virginia Tech's College of Natural Resources and Environment, told the audience of scientists during his keynote address at the Southeastern Fishes Council annual meeting in mid November 2010 in Athens, Ga. The theme of the meeting was "Got Water? At the Crossroads of Fish Conservation and Water Supply."

Orth's talk, "Mud, Sweat, and Jeers: The Science and Policy of Instream Flows," reviewed both historical events and progress in the development of policies to protect instream flows — the water flow in a stream and an indicator of the stream's ecological health — in the United States, particularly in the Southeast.

"The southeastern United States is one of the fastest growing regions in the country, and the human population continues to expand at a rapid pace," Orth pointed out. "In some states, the population has more than doubled in the past 50 years."

"There is a direct relationship between land and water use and the imperilment of fishes," he noted. "It is clear that the conservation of our diverse fish fauna and other aquatic resources faces huge challenges ahead as demands grow to impound streams, divert stream flow, and pump groundwater."

Of all animal species on the Federal endangered and threatened species list, 46 percent are found in freshwater habitats. The highest number of species at risk occurs in the southeastern United States.

"While all of the North American ecosystems are in trouble, freshwater habitats are recognized to be at severe risk because of their scarcity and the high demands placed on them by humans," Orth added.

"As various government entities begin to look for future water supply for cities, agriculture, and industry, it is critical to conservation that the habitat needs of fishes and other aquatic biota are taken into consideration," he concluded.

Recent scientific advances in fish conservation were highlighted on Orth's talk, as well as motivation and advice for engaging with state and local leaders in the water supply planning process.

The Southeastern Fishes Council is a nonprofit scientific organization dedicated to the study and conservation of freshwater and coastal fishes of the southeastern United States. The southeastern region includes the greatest global biodiversity of temperate freshwater fish species, and has well over half of all species found in North America.

A flash version of the presentation is at: http://www.fishwild.vt.edu/faculty/Orth/MudSweatJeers/Mud%20Sweat%20Jeers%20Flash%20SWF/index.htm

Lynn Davis | EurekAlert!
Further information:
http://www.vt.edu

More articles from Ecology, The Environment and Conservation:

nachricht Scientists team up on study to save endangered African penguins
16.11.2017 | Florida Atlantic University

nachricht Climate change: Urban trees are growing faster worldwide
13.11.2017 | Technische Universität München

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

Underwater acoustic localization of marine mammals and vehicles

23.11.2017 | Information Technology

Enhancing the quantum sensing capabilities of diamond

23.11.2017 | Physics and Astronomy

Meadows beat out shrubs when it comes to storing carbon

23.11.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>