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Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic: comparison of hydrolyzable components with plant wax lipids and lignin phenols

文献类型：期刊论文

作者Feng, X.; Gustafsson, O.; Holmes, R. M.; Vonk, J. E.; van Dongen, B. E.; Semiletov, I. P.; Dudarev, O. V.; Yunker, M. B.; Macdonald, R. W.; Montluon, D. B.
刊名BIOGEOSCIENCES
出版日期2015
卷号12期号:15页码:4841-4860
ISSN号1726-4170
DOI10.5194/bg-12-4841-2015
文献子类Article
英文摘要Hydrolyzable organic carbon (OC) comprises a significant component of sedimentary particulate matter transferred from land into oceans via rivers. Its abundance and nature are however not well studied in Arctic river systems, and yet may represent an important pool of carbon whose fate remains unclear in the context of mobilization and related processes associated with a changing climate. Here, we examine the molecular composition and source of hydrolyzable compounds isolated from sedimentary particles derived from nine rivers across the pan-Arctic. Bound fatty acids (b-FAs), hydroxy FAs, n-alkane-alpha,omega-dioic acids (DAs) and phenols were the major components released upon hydrolysis of these sediments. Among them, b-FAs received considerable inputs from bacterial and/or algal sources, whereas omega-hydroxy FAs, mid-chain substituted acids, DAs, and hydrolyzable phenols were mainly derived from cutin and suberin of higher plants. We further compared the distribution and fate of suberin- and cutin-derived compounds with those of other terrestrial biomarkers (plant wax lipids and lignin phenols) from the same Arctic river sedimentary particles and conducted a benchmark assessment of several biomarker-based indicators of OC source and extent of degradation. While suberin-specific biomarkers were positively correlated with plant-derived high-molecular-weight (HMW) FAs, lignin phenols were correlated with cutin-derived compounds. These correlations suggest that, similar to leaf-derived cutin, lignin was mainly derived from litter and surface soil horizons, whereas suberin and HMW FAs incorporated significant inputs from belowground sources (roots and deeper soil). This conclusion is supported by the negative correlation between lignin phenols and the ratio of suberin-to-cutin biomarkers. Furthermore, the molecular composition of investigated biomarkers differed between Eurasian and North American Arctic rivers: while lignin dominated in the terrestrial OC of Eurasian river sediments, hydrolyzable OC represented a much larger fraction in the sedimentary particles from Colville River. Hence, studies exclusively focusing on either plant wax lipids or lignin phenols will not be able to fully unravel the mobilization and fate of bound OC in Arctic rivers. More comprehensive, multi-molecular investigations are needed to better constrain the land-ocean transfer of carbon in the changing Arctic, including further research on the degradation and transfer of both free and bound components in Arctic river sediments.
学科主题Ecology ; Geosciences, Multidisciplinary
出版地GOTTINGEN
电子版国际标准刊号1726-4189
WOS关键词PARTICULATE ORGANIC-MATTER ; N-ALKANE DISTRIBUTIONS ; HYDROXY FATTY-ACIDS ; LENA RIVER DELTA ; SURFACE SEDIMENTS ; BEAUFORT SEA ; OLD CARBON ; OXIDATION-PRODUCTS ; VEGETATION CHANGE ; MARINE-SEDIMENTS
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000360003700019
出版者COPERNICUS GESELLSCHAFT MBH
资助机构Chinese National Key Development Program for Basic Research [2014CB954003, 2015CB954201] ; Knut and Alice Wallenberg Foundation ; headquarters of the Russian Academy of Sciences ; Swedish Research Council ; US National Oceanic and Atmospheric Administration ; Russian Foundation of Basic Research [13-05-12028, 13-05-12041] ; Swedish Polar Research Secretariat ; Nordic Council of Ministers (Arctic Co-Op and TRI-DEFROST programs) ; Swedish Royal Academy of Sciences ; Government of the Russian Federation [2013-220-04-157] ; Swiss National Science foundation (SNF) [200021_140850] ; US National Science Foundation (NSF) [OCE-9907129, OCE-0137005, OCE-0526268] ; Stanley Watson Chair for Excellence in Oceanography ; ETH Zurich ; NWO Rubicon [825.10.022] ; Veni [863.12.004] ; UK NERC [NE/I024798/1] ; NSF [0436118, 0732555, 1107774.X] ; WHOI ; National Thousand Young Talents recruiting plan of China ; Institute of Botany ; NERC [NE/I024798/1] Funding Source: UKRI ; Natural Environment Research Council [NE/I024798/1] Funding Source: researchfish
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/25817]  
专题植被与环境变化国家重点实验室
作者单位1.Macdonald, R. W.
2.[Semiletov, I. P.
3.[Macdonald, R. W.] Inst Ocean Sci, Dept Fisheries & Oceans, Sidney, BC V8L 4B2, Canada
4.Dudarev, O. V.] Natl Res Tomsk Polytechn Univ, Tomsk, Russia
5.Dudarev, O. V.] Far Eastern Branch Russian Acad Sci, Pacif Oceanol Inst, Vladivostok, Russia
6.[Gustafsson, O.] Stockholm Univ, Dept Environm Sci & Analyt Chem ACES, S-10691 Stockholm, Sweden
7.[Semiletov, I. P.] Univ Alaska Fairbanks, Int Arct Res Ctr, Fairbanks, AK USA
8.[van Dongen, B. E.] Univ Manchester, Williamson Res Ctr Mol Environm Sci, Manchester, Lancs, England
9.[van Dongen, B. E.] Univ Manchester, Sch Earth Atmospher & Environm Sci, Manchester, Lancs, England
10.[Vonk, J. E.] Univ Groningen, Arct Ctr, Groningen, Netherlands
推荐引用方式
GB/T 7714		 Feng, X.,Gustafsson, O.,Holmes, R. M.,et al. Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic: comparison of hydrolyzable components with plant wax lipids and lignin phenols[J]. BIOGEOSCIENCES,2015,12(15):4841-4860.
APA Feng, X..,Gustafsson, O..,Holmes, R. M..,Vonk, J. E..,van Dongen, B. E..,...&Eglinton, T. I..(2015).Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic: comparison of hydrolyzable components with plant wax lipids and lignin phenols.BIOGEOSCIENCES,12(15),4841-4860.
MLA Feng, X.,et al."Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic: comparison of hydrolyzable components with plant wax lipids and lignin phenols".BIOGEOSCIENCES 12.15(2015):4841-4860.

入库方式： OAI收割

来源：植物研究所

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