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:1/26/2017)... , Jan. 26, 2017  Acuity Market ... for Biometrics and Digital Identity".  Acuity characterizes 2017 ... identity when increased adoption reflects a new understanding ... "Biometrics and digital identity are often ... Maxine Most , Principal of Acuity Market ...
(Date:1/24/2017)... Biopharm Reports has carried out a ... nuclear magnetic resonance spectroscopy (NMR). This involved the ... practices, developments, trends and end-user plans over the ... opportunities. These areas include growth in the use ... innovation requirements, hyphenated NMR techniques, main suppliers of ...
(Date:1/23/2017)... latest mobile market research from Acuity Market Intelligence reveals ... average price of a biometric smartphone decreased from $849 ... are now 120 sub-$150 models on the market at ... a year ago at an average price of $127. ... Acuity Market Intelligence Principal, "Biometric Smartphones are a global ...
Breaking Biology News(10 mins):
(Date:2/27/2017)... and HAMILTON, Bermuda , ... (NASDAQ: ADXS ) and SELLAS ... focused on developing cancer immunotherapies, today announced that ... a novel cancer immunotherapy agent using Advaxis, proprietary ... patented WT1 targeted heteroclitic peptide antigen mixture (galinpepimut-S). ...
(Date:2/27/2017)... (PRWEB) , ... February 27, 2017 , ... The ... only a few in the Midwest offering premix services and private label organic services. ... for laying hens, according Jos Zamzow, chief operating officer of Dynamite Marketing, which owns ...
(Date:2/24/2017)... ... 24, 2017 , ... A study recently published in Spine ... surgery center (ASC) with satisfactory clinical and patient-reported outcomes, when compared to anterior ... Jake Lubinski, president of AxioMed, commented on the recent publication, stating, “We see ...
(Date:2/24/2017)... , Feb. 24, 2017 Provectus ... or the "Company"), a clinical-stage oncology and dermatology ... the deadline to participate in its previously announced ... consisting of shares of common stock and Series ... holders of listed warrants. As ...
Breaking Biology Technology: