|
|
Science 21 March 2008:
Vol. 319. no. 5870, p. 1615
DOI: 10.1126/science.319.5870.1615a
|
|
Letters
How to Submit a Letter to the Editor
Technical Comment Abstracts
 |
COMMENT ON "Physical Model for the Decay and Preservation of Marine Organic Carbon"
Bernard P. Boudreau, Carol Arnosti, Bo Barker Jørgensen, Donald E. Canfield
Abstract: Rothman and Forney (Reports, 1 June 2007, p. 1325) described a model for the decay of marine organic carbon. However, the enzyme deactivation rates required by their model are too fast compared with available data, and the model fails to explain the similarity in observed decay rate constants from different experiments. Alternative models provide equally good fit to the observed temporal trend in decay rate constants.
Full text at www.sciencemag.org/cgi/content/full/319/5870/1616b
RESPONSE TO COMMENT ON "Physical Model for the Decay and Preservation of Marine Organic Carbon"
Daniel H. Rothman and David C. Forney
Abstract: Fast enzyme deactivation rates are not required by our physical model of organic matter decay. Instead, low effective diffusivities arising from sorption of enzymes and physical protection by minerals are sufficient. Our model predicts observed temporal trends in organic-matter decay rather than specific rate constants. Existing statistical models of intrinsic reactivity explain observed trends empirically but not theoretically.
Full text at www.sciencemag.org/cgi/content/full/319/5870/1616c
|
|
|
Science. ISSN 0036-8075 (print), 1095-9203 (online)
