scholarly journals An experimental test of climate change effects in northern lakes: Increasing allochthonous organic matter and warming alters autumn primary production

2021 ◽  
Author(s):  
Mohammed Hamdan ◽  
Pär Byström ◽  
Erin R. Hotchkiss ◽  
Mohammed J. Al‐Haidarey ◽  
Jan Karlsson
Keyword(s):  
Climate Change ◽  
Organic Matter ◽  
Primary Production ◽  
Experimental Test ◽  
Allochthonous Organic Matter ◽  
Climate Change Effects

scholarly journals The importance of allochthonous organic matter quality when investigating pulse disturbance events in freshwater lakes: a mesocosm experiment

Hydrobiologia ◽  
2021 ◽  
Author(s):  
Maria Calderó-Pascual ◽  
Dilvin Yıldız ◽  
Gülce Yalçın ◽  
Melisa Metin ◽  
Sinem Yetim ◽  
...  
Keyword(s):  
Climate Change ◽  
Organic Matter ◽  
Global Climate ◽  
Freshwater Ecosystems ◽  
Mesocosm Experiment ◽  
Allochthonous Organic Matter ◽  
Organic Matter Quality ◽  
Leaf Leachate ◽  
Elemental Stoichiometry ◽  
The Individual

AbstractExtreme precipitation is occurring with greater frequency and intensity as a result of climate change. Such events boost the transport of allochthonous organic matter (allo-OM) to freshwater ecosystems, yet little is known about the impacts on dissolved organic matter (DOM) quality and seston elemental stoichiometry, especially for lakes in warm climates. A mesocosm experiment located in a Turkish freshwater lake was designed to simulate a pulse event leading to increased inputs of allo-OM by examining the individual effects of increasing water colour (HuminFeed®, HF), the direct effects of the extra energetic inputs (alder tree leaf leachate, L), and the interactions of the single treatment effects (combination of both sources, HFL), along with a comparison with unmanipulated controls. Changes in the DOM quality and nutrient stoichiometry of the allo-OM treatment additions was examined over the course of the experiments. Results indicated that there was an increase of high recalcitrant DOM components in the HF treatment, in contrast to an increase in less aromatic microbially derived molecules for the L treatment. Unexpectedly, seston C:P ratios remained below a severe P-limiting threshold for plankton growth and showed the same temporal pattern in all mesocosms. In contrast, seston N:P ratios differed significantly between treatments, with the L treatment reducing P-limiting conditions, whilst the HF treatment increased them. The effects of the combined HFL treatment indicated an additive type of interaction and chlorophyll-a was highest in the HFL treatment. Our results demonstrate that accounting for the optical and stoichiometric properties of experimental allo-OM treatments is crucial to improve the capacity to explain extrapolated conclusions regarding the effects of climate driven flooding on freshwater ecosystems in response to global climate change. Graphical abstract

scholarly journals Estimating climate change effects on net primary production of rangelands in the United States

2014 ◽  
Vol 126 (3-4) ◽  
pp. 429-442 ◽  
Author(s):  
Matthew C. Reeves ◽  
Adam L. Moreno ◽  
Karen E. Bagne ◽  
Steven W. Running
Keyword(s):  
Climate Change ◽  
United States ◽  
Primary Production ◽  
Net Primary Production ◽  
The United States ◽  
Climate Change Effects

Assessment of aquifers groundwater storage for the mitigation of climate change effects

2016 ◽  
Vol 39 ◽  
pp. 89-92 ◽  
Author(s):  
Luca Alberti ◽  
Martino Cantone ◽  
Loris Colombo ◽  
Gabriele Oberto ◽  
Ivana La Licata
Keyword(s):  
Climate Change ◽  
Groundwater Storage ◽  
Climate Change Effects

Estimating Climate Change Effects on Installation Energy Use

2012 ◽  
Author(s):  
Ronald Filadelfo ◽  
Jonathon Mintz ◽  
Daniel Carvell ◽  
Alan Marcus
Keyword(s):  
Climate Change ◽  
Energy Use ◽  
Climate Change Effects
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