Navigation Links
Nature's chemical diversity reflected in Swedish lakes
Date:5/2/2014

It's not only the biology of lakes that varies with the climate and other environmental factors, it's also their chemistry. More knowledge about this is needed to understand the ecology of lakes and their role in the carbon cycle and the climate. Today an international research group led by Uppsala University is publishing a comprehensive study of the composition of organic compounds in the prestigious journal Nature Communications.

- Lake water is like a very thin broth with several thousand ingredients in the recipe, all with different properties. At the same time many of the molecules are common in a broad spectrum of different environments. For instance, in the extremely complex chemical mixture we have found the same components as colleagues have described from the Congo. And they react to environmental factors in the same way in the tropics as in Sweden, says Lars Tranvik, who directed the study.

All of the world's lakes cover only three per cent of the surface area of the continents, but they nevertheless play a huge role in the carbon cycle of the planet. Among other things, there is an outflow of carbon dioxide to the atmosphere. This is largely due to the fact that these lakes take in tremendous amounts of organic materials from the surrounding land, and these are also converted in the water with the help of microorganisms.

Most of this organic matter is found in dissolved form in the water and consists of thousands of different molecules. The present study is the most comprehensive investigation ever of how the composition of these organic compounds is formed by processes in lakes and their catchments in the surrounding landscape. The researchers have analysed the make-up of the dissolved organic matter in 120 lakes from north to south in Sweden, as well as how its composition varies with the climate and other factors.

The study is a collaborative project involving a group of scientists from the Limnology program at Uppsala University and the Max Planck Institute for Marine Microbiology in Bremen/ University of Oldenburg. It is based on, among other things, data from a national environmental survey which monitors water chemistry and other properties of lakes. In addition, the researchers have performed detailed analyses of the organic material with the help of a powerful instrument in Germany a high-resolution mass spectrometer.

The results show that not only biological diversity but also chemical diversity is regulated by various environmental factors. For example, in lakes with long water retention times, that is, where the water remains in place for a long period before being transported downstream, molecules from surrounding forests and wetlands are largely broken down.

- This leads to a completely different chemical composition, where the content of compounds that are produced by plankton in the lakes is more dominant, says Anne Kellerman, a doctoral candidate who is the lead author of the article.

By comparing lakes in different climates, we can get a picture of what chemical composition the water will have in a future climate with higher temperatures and more precipitation. This has consequences for how we should locate and design plants for drinking water production in the future.

- We're now continuing our investigations of the chemical diversity of nature by trying to figure out what mechanisms underlie the patterns we're finding. What determines that organic material in some cases is preserved in nature for a long time, and why is it degraded quickly under different circumstances? wonders Lars Tranvik.

This research is being conducted in a strong research environment funded by the Swedish Research Council Formas, "Color of Water", which is analysing current and future changes in the organic matter in lakes, and how this affects both drinking-water production and the ecology of the lakes.


'/>"/>

Contact: Lars Tranvik
lars.tranvik@ebc.uu.se
0046-702-25830
Uppsala University
Source:Eurekalert

Related biology news :

1. Oncogenic signatures mapped in TCGA a guide for the development of personalized therapy
2. Oregon Biodiversity Information Center wins 2013 Natureserve Network Collaboration Award
3. Walt Reid to receive 2013 NatureServe Conservation Award
4. Biosignatures distinguish between tuberculosis and sarcoidosis
5. Epigenetic signatures direct the repair potential of reprogrammed cells
6. Study in Science finds missing piece of biogeochemical puzzle in aquifers
7. Crib mattresses emit potentially harmful chemicals, Cockrell School engineers find
8. Research center to develop next generation of advanced chemical products
9. West Virginia chemical spill into Elk River contaminating air and water quality
10. $1.5M grant helps turn chemical weapon into medical marvel
11. Mathematical and biochemical design features for cell decoding of pulses revealed
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/8/2017)... -- Report Highlights The global biosurgery market ... in 2016 at a compound annual growth rate (CAGR) ... - An overview of the global market for biosurgery. ... 2015 and 2016, and projections of compound annual growth ... on the basis of product type, source, application, and ...
(Date:2/3/2017)... , Feb. 3, 2017  Texas Biomedical Research Institute announced ... Larry Schlesinger as the Institute,s new President and ... effective May 31, 2017. He is currently the Chair of ... the Center for Microbial Interface Biology at Ohio State University. ... the new President and CEO of Texas Biomed," said Dr. ...
(Date:2/1/2017)... 2017 IDTechEx Research, a leading provider of ... the availability of a new report, Sensors for Robotics: Technologies, ... Reading ... ... Source: IDTechEx Report "Sensors for Robotics: Technologies, Markets and Forecasts 2017-2027: ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... , Feb. 24, 2017  Aethlon Medical, Inc. (Nasdaq: ... authored by its Chairman and CEO, Jim Joyce ... Munich Security Conference last Saturday, Bill Gates ... kill more people than nuclear weapons. Mr. Gates expressed ... U.K. intelligence agencies, that scientific terrorists have access to ...
(Date:2/24/2017)... , Feb. 24, 2017  Driven by consumers, ... are now the fastest growing categories, finds the ... Actives in Personal Care: Multi-regional Market Analysis and ... management consulting firm Kline. "Biotechnology actives ... make them more effective for skin and hair ...
(Date:2/24/2017)... ... February 24, 2017 , ... FireflySci, Inc is an explosive ... 2014, FireflySci had the goal of bringing their powerful cuvette and spectrophotometer ... the path that FireflySci is going on as they add yet another mark on ...
(Date:2/24/2017)... Feb. 24, 2017  VWR Corporation (NASDAQ: VWR), the leading ... and production customers, today reported its financial results for the ... Highlights: 4Q16 record quarterly net ... on an organic basis. 4Q16 ... organic basis, while the Americas net sales increased 2.5%, or ...
Breaking Biology Technology: