Labile pyrogenic dissolved organic carbon in major Siberian Arctic rivers: Implications for wildﬁre-stream metabolic linkages
URI (for links/citations):http://elib.sfu-kras.ru/handle/2311/32922
Myers-Pigg, Allison N.
Amon Rainer, M. W.
Институт экологии и географии
Лаб. Биогеохимии экосистем
Journal Name:Geophysical Research Letters
Journal Quartile in Scopus:Q1
Journal Quartile in Web of Science:Q1
Bibliographic Citation:Myers-Pigg, Allison N. Labile pyrogenic dissolved organic carbon in major Siberian Arctic rivers: Implications for wildﬁre-stream metabolic linkages [Текст] / Allison N. Myers-Pigg, Patrick Louchouarn, M. W. Amon Rainer, Anatoly Prokushkin, Kayce Pierce, Alexey Rubtsov // Geophysical Research Letters. — 2015.
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Biomass burning produces a spectrum of thermally altered materials that releases pyrogenic carbon (PyC) to terrestrial, atmospheric, and aquatic systems. Most studies focus on the refractory end of the PyC spectrum, derived from middle- to high-temperature combustion. Low-temperature PyC is produced during wildﬁres and has been found to be particularly labile and water soluble. Here we ﬁnd that in each of the major Siberian watersheds, low-temperature ﬁre-derived biomarkers are present in detectable concentrations during all ﬂow regimes of the 2004–2006 sampling period, conﬁrming that PyC is an intrinsic component of the dissolved organic carbon (DOC) pool mobilized by hydrologic events. Gymnosperm combustion, from the southern portions of these watersheds, is the primary source of this Py-DOC input. Using ﬁrst-order degradation rates and transit times of water through these rivers, about half of the total estimated ﬂux of this material may be remineralized during transport from ﬁre source to river mouth (20–40 days), demonstrating the input of a labile source of PyC to these watersheds.