For over a decade our group has been studying organic carbon and the impact of changing climate on carbon cycling in the polar oceans. These regions are uniquely sensitive to climate and through participation in several multidisciplinary programs and individual projects we are investigating the sources (marine, terrestrial, bacterial) and fate (e.g., burial, transport, remineralization) of organic carbon in the Arctic Ocean and how the carbon cycle responds to past and current changes in climate. We use a suite of lipid biomarkers plus other tools to distinguish carbon sources, the quality of carbon present and to estimate the fraction of carbon which might be preserved over longer time scales. These examinations range from seasonal studies in the field to the examination of preserved materials in sediments over Holocene time periods.
Related papers and links
Taylor, K.A. and Harvey, H. R., 2011. Bacterial hopanoids as tracers of organic carbon sources and processing across the western Arctic continental shelf. Organic Chemistry42:487-497.
Faux, J.F., Belicka, L.L., and Harvey, H. R., 2011. Organic sources and carbon sequestration in Holocene shelf sediments from the western Arctic Ocean. Continental Shelf Research31:1169-1179.
Faux, J., Belicka, L.L., Polyak, L., and Harvey, H. R., 2010. Analysis of organic sources and carbon sequestration in Holocene sediments of the western Arctic Ocean. Ocean Sciences Meeting, 21-26 February, Portland, Oregon. Poster Presentation
Taylor, K. A. and Harvey, H. R., 2010. Intact hopanoids as microbial tracers in polar seas. Ocean Sciences Meeting, 21-26 February, Portland, Oregon. Poster Presentation
Belicka, L.L. and Harvey, H.R., 2009. The sequestration of terrestrial organic carbon in Arctic Ocean sediments: A comparison of methods and implications for regional carbon budgets.Geochimica et Cosmochimica Acta 73:6231–6248.
Belicka, L.L., Macdonald, R.W., and Harvey, H.R., 2009. Trace element and molecular markers of organic carbon dynamics along a shelf–basin continuum in sediments of the western Arctic Ocean. Marine Chemistry 115:72-85.
Dyda, R.Y., Suzuki, M.T., Yoshinaga, M.Y., and Harvey, H.R., 2009. The response of microbial communities to diverse organic matter sources in the Arctic Ocean. Deep-Sea Research II 56:1249–1263.
Grebmeier, J.M., Harvey, H.R., and Stockwell, D.A., 2009. The western Arctic Shelf–Basin interactions (SBI) project, volume II: An overview. Deep-Sea Research II 56:1137-1143.
Yunker, M.B., Belicka, L.L., Harvey, H.R., and Macdonald, R.W., 2005. Tracing the inputs and fate of marine and terrigenous organic matter in Arctic Ocean sediments: A multivariate analysis of lipid biomarkers. Deep-Sea Research II 52:3478-3508.
Belicka, L.L., Macdonald, R.W., Yunker, M.B., and Harvey, H.R., 2004. The role of depositional regime on carbon transport and preservation in Arctic Ocean sediments. Marine Chemistry 86:65-88.