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OU Professor Contributes to International Study on Global Warming


UpdatedWed, Mar 17, 2021 at 3:18 pm ET
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Mount Cook in New Zealand (Lee Brown, University of Leeds, United Kingdom)
Oakland University Professor Scott Tiegs is a co-author on a new study that examines how glacier loss, driven by global warming, affects glacier-fed river ecosystems. The study was published March 15 in the journal Nature Climate Change.
Tiegs was part of an international team of researchers led by the University of Leeds (United Kingdom) that measured organic matter decomposition rates in mountain rivers in six countries and four continents. The study found that as glaciers melt, the rivers downstream support higher rates of organic matter decomposition, a major process in the global carbon cycle. This discovery could help researchers better predict how river ecosystems will change as mountains continue to lose ice due to global warming. ....

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University of Leeds | News > Environment > Melting glaciers could speed up carbon emissions


Melting glaciers could be triggering a ‘feedback process’ that causes further climate change, according to new research.
An international research team led by the University has for the first time linked glacier-fed mountain rivers with higher rates of plant material decomposition, a major process in the global carbon cycle.
As mountain glaciers melt, water is channelled into rivers downstream. But with global warming accelerating the loss of glaciers, rivers have warmer water temperatures and are less prone to variable water flow and sediment movement. These conditions are then much more favourable for fungi to establish and grow. 
Fungi living in these rivers decompose organic matter such as plant leaves and wood, eventually leading to the release of carbon dioxide into the air. The process – a key part of global river carbon cycling – has now been measured in 57 rivers in six mountain ranges across the world, in Austria, Ecuador, France, New Zealand, Norway ....

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Melting glaciers could speed up carbon emissions into the atmosphere


Credit: Lee Brown
The loss of glaciers worldwide enhances the breakdown of complex carbon molecules in rivers, potentially contributing further to climate change.
An international research team led by the University of Leeds has for the first time linked glacier-fed mountain rivers with higher rates of plant material decomposition, a major process in the global carbon cycle.
As mountain glaciers melt, water is channelled into rivers downstream. But with global warming accelerating the loss of glaciers, rivers have warmer water temperatures and are less prone to variable water flow and sediment movement. These conditions are then much more favourable for fungi to establish and grow. ....

United States , New Zealand , University Of Alaska Southeast , Norway General , Les Allues , Alex Dumbrell , Lee Brown , Kate Randall , Scott Tiegs , Sophie Cauvy Frauni , Ulvik Fjellstyre , Kirsty Matthews Nicholass , Jonathan Carrivick , Ian Rosser , School Of Geography , Alaska Climate Adaptation Science Center , Natural Environment Research Council , Finse Alpine Research Centre Norway , Public Metropolitan Company Of Potable Water , Design School , Water Projection Fund , Obergurgl Alpine Research Centre Austria , School Of Life Sciences , Department Of Conservation New Zealand , Oakland University , Parc National De La Vanoise France ,