Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/NGEO3051 |
Variability in organic carbon reactivity across lake residence time and trophic gradients | |
Evans, Chris D.1,2; Futter, Martyn N.2; Moldan, Filip3; Valinia, Salar4,7; Frogbrook, Zoe5; Kothawala, Dolly N.6 | |
2017-11-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Wales; Sweden; Norway; Scotland |
英文摘要 | The transport of dissolved organic carbon from land to ocean is a large dynamic component of the global carbon cycle. Inland waters are hotspots for organic matter turnover, via both biological and photochemical processes, and mediate carbon transfer between land, oceans and atmosphere. However, predicting dissolved organic carbon reactivity remains problematic. Here we present in situ dissolved organic carbon budget data from 82 predominantly European and North American water bodies with varying nutrient concentrations and water residence times ranging from one week to 700 years. We find that trophic status strongly regulates whether water bodies act as net dissolved organic carbon sources or sinks, and that rates of both dissolved organic carbon production and consumption can be predicted from water residence time. Our results suggest a dominant role of rapid light-driven removal in water bodies with a short water residence time, whereas in water bodies with longer residence times, slower biotic production and consumption processes are dominant and counterbalance one another. Eutrophication caused lakes to transition from sinks to sources of dissolved organic carbon. We conclude that rates and locations of dissolved organic carbon processing and associated CO2 emissions in inland waters may be misrepresented in global carbon budgets if temporal and spatial reactivity gradients are not accounted for. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000414031600012 |
WOS关键词 | INLAND WATERS ; DIOXIDE EMISSIONS ; NORTHERN SWEDEN ; MATTER ; BUDGET ; TRANSPORT ; STREAM ; RIVER ; CATCHMENT ; BALANCES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35163 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Ctr Ecol & Hydrol, Deiniol Rd, Bangor LL57 2UW, Gwynedd, Wales; 2.Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Lennart Hjalms Vag 9, S-75007 Uppsala, Sweden; 3.IVL Swedish Environm Res Inst, POB 5302, S-40014 Gothenburg, Sweden; 4.Norwegian Inst Water Res, Gaustadalleen 21, N-0349 Oslo, Norway; 5.Scottish Water, 55 Buckstone Terrace, Edinburgh EH10 6XH, Midlothian, Scotland; 6.Uppsala Univ, Dept Ecol & Genet Limnol, Norbyvagen 18D, S-75236 Uppsala, Sweden; 7.Swedish Environm Protect Agcy, Valhallavagen 195, S-10648 Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Evans, Chris D.,Futter, Martyn N.,Moldan, Filip,et al. Variability in organic carbon reactivity across lake residence time and trophic gradients[J]. NATURE GEOSCIENCE,2017,10(11). |
APA | Evans, Chris D.,Futter, Martyn N.,Moldan, Filip,Valinia, Salar,Frogbrook, Zoe,&Kothawala, Dolly N..(2017).Variability in organic carbon reactivity across lake residence time and trophic gradients.NATURE GEOSCIENCE,10(11). |
MLA | Evans, Chris D.,et al."Variability in organic carbon reactivity across lake residence time and trophic gradients".NATURE GEOSCIENCE 10.11(2017). |
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