Featured Research

from universities, journals, and other organizations

'Fingerprinting' used to determine source of water sediment

Date:
August 14, 2014
Source:
Teagasc
Summary:
Forensic geoscience is being used to determine the source of sediment in watercourses. Delivery of sediment to watercourses can have environmental and economic impacts. Elevated suspended sediment in rivers, as a result of enterprises such as agriculture and forestry, can result in decreased light penetration in rivers, affecting aquatic flora and fauna. Excessive sediment in a river bed can smother aquatic habitats for species such as the Freshwater Pearl Mussel and Atlantic salmon.

Teagasc research is using forensic geoscience to determine the source of sediment in our watercourses.

Delivery of sediment to watercourses can have environmental and economic impacts. Elevated suspended sediment in rivers, as a result of enterprises such as agriculture and forestry, can result in decreased light penetration in rivers, affecting aquatic flora and fauna. Excessive sediment in a river bed can smother aquatic habitats for species such as the Freshwater Pearl Mussel and Atlantic salmon.

Dr. Daire Σ hUallachain (Teagasc Johnstown Castle) highlighted that "it is important to identify sediment sources in order to target cost-effective watercourse management."

Sediment fingerprinting is a novel technique for quantifying the relative contribution of sediment from different sources in a catchment. The approach collects soil samples from potential sediment source areas (e.g. channel banks, tillage fields, forestry). The distinctive signature from each source area can then be identified from natural properties such as geochemistry, radionuclides, magnetics and colour. Sediment collected in a stream is a mixture of sediments from each of the source areas. Sediment fingerprinting involves separating stream sediment out into the different source area sediments, thus allowing each source to be quantified.

Dr. Σ hUallachαin said that "research on sediment fingerprinting is being undertaken in three catchments from the Teagasc Agricultural Catchments Programme. The technique offers valuable insight into the relative importance of different sources within agricultural landscapes. It helps identify source areas and facilitates targeting of mitigation measures, in turn helping to achieve water quality objectives under the EU Water Framework Directive."


Story Source:

The above story is based on materials provided by Teagasc. Note: Materials may be edited for content and length.


Cite This Page:

Teagasc. "'Fingerprinting' used to determine source of water sediment." ScienceDaily. ScienceDaily, 14 August 2014. <www.sciencedaily.com/releases/2014/08/140814123929.htm>.
Teagasc. (2014, August 14). 'Fingerprinting' used to determine source of water sediment. ScienceDaily. Retrieved October 2, 2014 from www.sciencedaily.com/releases/2014/08/140814123929.htm
Teagasc. "'Fingerprinting' used to determine source of water sediment." ScienceDaily. www.sciencedaily.com/releases/2014/08/140814123929.htm (accessed October 2, 2014).

Share This



More Earth & Climate News

Thursday, October 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Dolphins and Turtles Under Threat in Pakistan

Dolphins and Turtles Under Threat in Pakistan

AFP (Oct. 2, 2014) — The turtles and Dolphins of Pakistan's Indus river - both protected by law - are in a fight for their survival as man's activities threatens their futures. Duration: 02:29 Video provided by AFP
Powered by NewsLook.com
Raw: Japan Volcano Rescue Video Released

Raw: Japan Volcano Rescue Video Released

AP (Oct. 2, 2014) — The Tokyo Fire Department released video of rescue efforts following Saturday's eruption of Mount Ontake in central Japan. It shows firefighters and military troops carrying injured people as plumes of smoke pour from the volcano behind them. (Oct. 2) Video provided by AP
Powered by NewsLook.com
Raw: 12 More Bodies Found on Japan Volcano

Raw: 12 More Bodies Found on Japan Volcano

AP (Oct. 1, 2014) — A dozen more bodies were found Wednesday as Japanese rescuers resumed efforts to find survivors and retrieve bodies of those trapped by Mount Ontake's eruption. (Oct. 1) Video provided by AP
Powered by NewsLook.com
Cultural Learning In Wild Chimps Observed For The First Time

Cultural Learning In Wild Chimps Observed For The First Time

Newsy (Oct. 1, 2014) — Cultural transmission — the passing of knowledge from one animal to another — has been caught on camera with chimps teaching other chimps. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins