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Climate Change 2016
October 27-29, 2016
Volume 7, Issue 9(Suppl) J Earth Sci Clim Change
ISSN: 2157-7617 JESCC, an open access journal
conferenceseries .com
October 24-26, 2016 Valencia, Spain
World Conference onClimate Change
Effect of climate warming on neutral carbohydrates in sediment cores of subtropical reservoirs, South
China
Yong Ran1 , Dandan Duan1,2, Youda Huang 1,2 and Dainan Zhang1,2
1Chinese Academy of Sciences, China
2University of Chinese Academy of Sciences, China
The relationships of neutral carbohydrates with algal organic matter (AOM) and climate change were investigated in three
sediment cores of various trophic reservoirs. Neutral monosaccharides and AOM were determined respectively by high-
performance anion-exchange chromatography with pulsed amperometric detection (HPAC-PAD) and by Rock-Eval analysis.
Neutral sugar concentrations are strongly correlated with AOM in the mesotrophic reservoir cores, where glucose, mannose
and galactose are the most abundant monosaccharides. Monosaccharide compositions and diagnostic parameters indicate a
predominant contribution of phytoplankton in the mesotrophic reservoirs. The deposited neutral carbohydrates in sediment
cores are largely structural polysaccharides derived from algal detritus, and are resistant to degradation. The increasing mean
air temperature during the past 40 years has significant influences on the neutral carbohydrates and algal productivity at
both meso-eutrophic reservoirs and oligotrophic reservoirs. The hydrogen index (HI) is observed to be a good indicator for
monitoring historical changes of primary productivity in aquatic environments. The above evidence shows that even at low
latitude regions, the primary productivity in subtropical reservoirs has been significantly elevated by climate warming.
Biography
Yong Ran is a Principal Investigator or co-investigator for 18 research grants totaling 9 million Yuan (RMB) from the National Natural Science Foundation of China,
Chinese Academy of Sciences and State Science and Technology Ministry of China. His recent research (1998-2015) has involved in distribution, source, sorption,
bioaccumulation and bioavailability of organic contaminants in terrestrial and aquatic systems. His research was awarded with one national prize and one provincial
prize. He has been the author of over 70 referred international and national publications.
Yong Ran et al., J Earth Sci Clim Change 2016, 7:9(Suppl)