Navigation Links
Recovery from acid rain 'much slower than expected'
Date:9/28/2007

Acid rain was one of the worlds worst pollution problems of the 1970s and 1980s, affecting large areas of upland Britain, as well as Europe and North America.

In Wales, more than 12,000 km of streams and rivers have been acidified, harming fish, stream insects and river birds such as the dipper.

Over the last 20 years, action has been taken across Europe to clean up acid pollutants from power generation and industry, which was widely expected to bring recovery. However, new research led by Cardiff Universitys School of Biosciences shows that the expected improvements in rivers are far short of expectations.

Recent studies in Galloway, the Scottish Highlands and Wales reveal that many streams are still highly acidified. Biological recovery has been particularly poor.

Key findings from the projects, carried out by combined teams from Cardiff University, the Centre for Ecology & Hydrology and National Museum Wales, include:

  • Acidity in Welsh headwaters is declining, but only slowly

  • More than two thirds of all streams sampled were acid enough during high flow to cause biological damage, with metals at toxic concentrations

  • Sulphur pollution from man-made sources is still an important cause of acid episodes, particularly in Wales

  • Sensitive insects survive conditions in the most acid streams for only a few days

  • Headwater acidification is still a significant problem for important salmon fisheries, and Special Areas of Conservation such as the Welsh River Wye.

Professor Steve Ormerod of the School of Biosciences, a leading researcher into the biological effects of acid rain for more than 20 years, said: Organisms and ecosystems are the best indicators of recovery from pollution, so these results will alarm anyone interested in the well-being of our rivers. We need to understand the factors responsible for such delayed recovery, particularly since climate change is likely to make the acidification problem even worse.

Dr Chris Evans, an acid-rain specialist from the Centre for Ecology & Hydrology in Bangor, added Pollution reductions are slowly improving in upland waters, but there is a long way to go. The large biological effects of acid episodes shown by this work mean that it is vital to continue monitoring these ecosystems if we are to protect them in future."

The research contrasts with other recent studies which showed some encouraging early signs and will come as disappointing news to those who thought the acid rain problem was solved.


'/>"/>

Contact: Stephen Rouse
RouseS@cardiff.ac.uk
44-029-208-75596
Cardiff University
Source:Eurekalert

Related biology news :

1. Dinosaur DNA? New Patent Covers Degraded DNA recovery
2. Low oxygen likely made Great Dying worse, greatly delayed recovery
3. Combination therapy leads to partial recovery from spinal cord injury in rats
4. Time and money make a difference in endangered species recovery
5. Adult stem cells aid recovery in animal model of cerebral palsy
6. Infused spleen cells found not to impact islet recovery and reversal of type 1 diabetes in mice
7. Stem cell transplants improve recovery in animal models for stroke, cerebral palsy
8. Iraqs marshes show progress toward recovery
9. UC Davis study finds HIV hiding from drugs in gut, preventing immune recovery
10. Insect predation sheds light on food web recovery after the dinosaur extinction
11. Dopamine drug leads to new neurons and recovery of function in rat model of Parkinsons
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2017)... MILAN , March 24, 2017 The Controller ... Deputy Controller Mr. Abdulla Algeen have received the prestigious international ... Continue Reading ... ... small picture) and Deputy Controller Abdulla Algeen (small picture on the right) ...
(Date:3/23/2017)... report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based and Touchless), Product ... by MarketsandMarkets, the market is expected to be worth USD 18.98 billion by ... Continue Reading ... ...      (Logo: http://photos.prnewswire.com/prnh/20160303/792302) ...
(Date:3/22/2017)...   Neurotechnology , a provider of high-precision ... the release of the SentiVeillance 6.0 ... recognition using up to 10 surveillance, security and ... new version uses deep neural-network-based facial detection and ... a Graphing Processing Unit (GPU) for enhanced speed. ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... ... ... VIC Technology Venture Development™ (VIC™), is pleased to announce that ... continues to strengthen and diversify VIC’s board. , "We are excited to have Jamie ... accomplished business executive with a broad range of experience directly relevant to VIC as ...
(Date:7/20/2017)... ... July 20, 2017 , ... Corporate Directors Forum is recognizing ... annual Director of the Year Awards. , The awards will be presented Thursday, September ... annual event celebrates directors who have made significantly positive contributions in the boardrooms of ...
(Date:7/18/2017)... ... July 18, 2017 , ... Sourcing custom glass or quartz parts can ... the capabilities to properly execute your job can take many hours of emails, phone ... sourcing portal designed to showcase the company’s capabilities and core custom categories, and enables ...
(Date:7/18/2017)... Texas (PRWEB) , ... July 18, 2017 , ... Blood ... affect patients across the region. Nationally, summer is a struggle for community blood centers ... why the San Antonio Chamber of Commerce is teaming up with the ...
Breaking Biology Technology: