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Spectrofluorometric characterization of dissolved organic matter for indication of precursor organic material and aromaticity
We studied the fluorescence properties of fulvic acids isolated from streams and rivers receiving predominantly terrestrial sources of organic material and from lakes with microbial sources ofExpand
Lakes and reservoirs as regulators of carbon cycling and climate
We explore the role of lakes in carbon cycling and global climate, examine the mechanisms influencing carbon pools and transformations in lakes, and discuss how the metabolism of carbon in the inlandExpand
Fluorescence spectroscopy reveals ubiquitous presence of oxidized and reduced quinones in dissolved organic matter.
  • R. Cory, D. McKnight
  • Chemistry, Medicine
  • Environmental science & technology
  • 29 September 2005
Results provide new insight into the redox reactivity of DOM and have implications for the application of fluorescence spectroscopy as a tool to characterize DOM. Expand
Spatial and temporal variations in DOM composition in ecosystems: The importance of long‐term monitoring of optical properties
[1] Source, transformation, and preservation mechanisms of dissolved organic matter (DOM) remain elemental questions in contemporary marine and aquatic sciences and represent a missing link in modelsExpand
Isolation of hydrophilic organic acids from water using nonionic macroporous resins
Abstract A method has been developed for the isolation of hydrophilic organic acids from aquatic environments using Amberlite ∗ XAD-4 resin. The method uses a two column array of XAD-8 and XAD-4Expand
Water in a changing world
Renewable fresh water comprises a tiny fraction of the global water pool but is the foundation for life in terrestrial and freshwater ecosystems. The benefits to humans of renewable fresh waterExpand
Response characteristics of DOC flushing in an alpine catchment
The spatial distribution of source areas and associated residence times of water in the catchment are significant factors controlling the annual cycles of dissolved organic carbon (DOC) concentrationExpand
Effect of instrument‐specific response on the analysis of fulvic acid fluorescence spectra
Fluorescence spectroscopy has been extensively employed to characterize the source, age, and reactivity of aquatic dissolved organic matter (DOM). However, there is no consensus on the protocols forExpand
Antarctic climate cooling and terrestrial ecosystem response
Data from the dry valleys are presented representing evidence of rapid terrestrial ecosystem response to climate cooling in Antarctica, including decreased primary productivity of lakes and declining numbers of soil invertebrates, which poses challenges to models of climate and ecosystem change. Expand
Quinone Moieties Act as Electron Acceptors in the Reduction of Humic Substances by Humics-Reducing Microorganisms
D U R E L L E T . S C O T T , * , † D I A N E M . M C K N I G H T , † E L I Z A B E T H L . B L U N T H A R R I S , ‡ S A R A H E . K O L E S A R , † , § A N D D E R E K R . L O V L E Y ‡ InstituteExpand