Distinct Optical Chemistry of Dissolved Organic Matter in Urban Pond Ecosystems

Distinct Optical Chemistry of Dissolved Organic Matter in Urban Pond Ecosystems

Urbanization has the potential to dramatically alter the biogeochemistry of receiving freshwater ecosystems. We examined the optical chemistry of dissolved organic matter (DOM) in forty-five urban ponds across southern Ontario, Canada to examine whether optical characteristics in these relatively new ecosystems are distinct from other freshwater systems. Dissolved organic carbon (DOC) concentra...

Molecular exploration of bioavailable dissolved organic matter across aquatic ecosystems

Optical properties and bioavailability of dissolved organic matter

Introduction Conclusions References

Relationship of trophic and chemical conditions to photobleaching of dissolved organic matter in lake ecosystems

Dissolved organic matter (DOM) is a major light-absorbing substance, responsible for much of the color in water bodies. When sunlight energy is absorbed by DOM, some color can be lost by the process of photobleaching. We measured rates of DOM photobleaching in thirty lakes that varied greatly in color, trophic status and ionic composition. Loss of color (measured as absorbance at 440 nm and exp...

Protein analysis in dissolved organic matter

Protein analysis in dissolved organic matter: what free proteins from soil leachate and surface water can tell us – a perspective W. Schulze Center for Experimental Bioinformatics, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark Received: 15 November 2004 – Accepted: 13 December 2004 – Published: 20 December 2004 Correspondence to: W. Schulze ([email protected]) © 2004 Auth...