Dissolved Organic matter
Dissolved organic matter cycling has been an underappreciated component of terrestrial biogeochemistry. In recent years, however, there has been a great deal of interest in these fluxes because of evidence that these fluxes can be important to nutrient budgets and to carbon balance. These fluxes of material are also important for terrestrial-aquatic linkages.
Research Results
We have a continuing interest in DOM cycling in ecosystems. Neff's dissertation research focused on DOM and it has been a focus of studies in the lab including NSF funded work in Siberia as well as field studies in Alaska.
Dissolved Organic Matter
Cleveland C.C., J.C. Neff, A.R. Townsend, & E. Hood. 2004 Composition, dynamics, and fate of leached dissolved organic matter in terrestrial ecosystems: Results from a decomposition experiment. Ecosystems. 7:275-285. This work describes a laboratory study of the degradation of DOM from a variety of plant species. It provides information on decomposition rates and on the relatively proportion of DOC that is decomposable (and how it varies by plant species). PDF.
Aitkenhead-Peterson J., W.H. McDowell and J.C. Neff (2002). Sources, Production and Regulation of allochthonous dissolved organic matter. In (S. Findlay and R. Sinsabaugh, Eds.), Aquatic Ecosystems, interactivity of dissolved organic matter. Academic Press, Amsterdam. A book chapter that provides a very comprehensive review of the mechanisms controlling doc fluxes as well as a synthesis of numerous published DOC flux studies.
Neff J.C. and G.P. Asner. (2001) Dissolved organic carbon in terrestrial ecosystems: Synthesis and a model. Ecosystems. 4(1): 29-48. This paper is a synthesis and review of controls on DOC production in ecosystems. It is one of the first papers to provide this type of synthesis and we develop a series of quantitative relationships that can be used to develop models for DOC cycling in ecosystems. In this paper, we also describe such a model and use it to evaluate some of the factors that control DOC fluxes in a temperate forest ecosystem. PDF.
Neff J.C., S.E. Hobbie and P.M. Vitousek.(2000) Controls over the production and stoichiometry of dissolved organic carbon, nitrogen and phosphorus in tropical soils. Biogeochemistry, 51 (3):283-302. This study uses soils taken from a range of sites in the Hawaiian Islands that span a gradient in soil fertility and uses those soils in a laboratory study to examine the controls on DOM fluxes and stoichiometry. One of the more interesting aspects of the paper is the difference between how N and P are controlled in DOM. PDF.
Dissolved organic matter cycling has been an underappreciated component of terrestrial biogeochemistry. In recent years, however, there has been a great deal of interest in these fluxes because of evidence that these fluxes can be important to nutrient budgets and to carbon balance. These fluxes of material are also important for terrestrial-aquatic linkages.
Research Results
We have a continuing interest in DOM cycling in ecosystems. Neff's dissertation research focused on DOM and it has been a focus of studies in the lab including NSF funded work in Siberia as well as field studies in Alaska.
Dissolved Organic Matter
Cleveland C.C., J.C. Neff, A.R. Townsend, & E. Hood. 2004 Composition, dynamics, and fate of leached dissolved organic matter in terrestrial ecosystems: Results from a decomposition experiment. Ecosystems. 7:275-285. This work describes a laboratory study of the degradation of DOM from a variety of plant species. It provides information on decomposition rates and on the relatively proportion of DOC that is decomposable (and how it varies by plant species). PDF.
Aitkenhead-Peterson J., W.H. McDowell and J.C. Neff (2002). Sources, Production and Regulation of allochthonous dissolved organic matter. In (S. Findlay and R. Sinsabaugh, Eds.), Aquatic Ecosystems, interactivity of dissolved organic matter. Academic Press, Amsterdam. A book chapter that provides a very comprehensive review of the mechanisms controlling doc fluxes as well as a synthesis of numerous published DOC flux studies.
Neff J.C. and G.P. Asner. (2001) Dissolved organic carbon in terrestrial ecosystems: Synthesis and a model. Ecosystems. 4(1): 29-48. This paper is a synthesis and review of controls on DOC production in ecosystems. It is one of the first papers to provide this type of synthesis and we develop a series of quantitative relationships that can be used to develop models for DOC cycling in ecosystems. In this paper, we also describe such a model and use it to evaluate some of the factors that control DOC fluxes in a temperate forest ecosystem. PDF.
Neff J.C., S.E. Hobbie and P.M. Vitousek.(2000) Controls over the production and stoichiometry of dissolved organic carbon, nitrogen and phosphorus in tropical soils. Biogeochemistry, 51 (3):283-302. This study uses soils taken from a range of sites in the Hawaiian Islands that span a gradient in soil fertility and uses those soils in a laboratory study to examine the controls on DOM fluxes and stoichiometry. One of the more interesting aspects of the paper is the difference between how N and P are controlled in DOM. PDF.