Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14387 |
Warming enhances sedimentation and decomposition of organic carbon in shallow macrophyte-dominated systems with zero net effect on carbon burial | |
Velthuis, Mandy1,2; Kosten, Sarian1,3; Aben, Ralf1,3; Kazanjian, Garabet2; Hilt, Sabine2; Peeters, Edwin T. H. M.4; van Donk, Ellen1,5; Bakker, Elisabeth S.1 | |
2018-11-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:11页码:5231-5242 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; Germany |
英文摘要 | Temperatures have been rising throughout recent decades and are predicted to rise further in the coming century. Global warming affects carbon cycling in freshwater ecosystems, which both emit and bury substantial amounts of carbon on a global scale. Currently, most studies focus on the effect of warming on overall carbon emissions from freshwater ecosystems, while net effects on carbon budgets may strongly depend on burial in sediments. Here, we tested whether year-round warming increases the production, sedimentation, or decomposition of particulate organic carbon and eventually alters the carbon burial in a typical shallow freshwater system. We performed an indoor experiment in eight mesocosms dominated by the common submerged aquatic plant Myriophyllum spicatum testing two temperature treatments: a temperate seasonal temperature control and a warmed (+4 degrees C) treatment (n = 4). During a full experimental year, the carbon stock in plant biomass, dissolved organic carbon in the water column, sedimented organic matter, and decomposition of plant detritus were measured. Our results showed that year-round warming nearly doubled the final carbon stock in plant biomass from 6.9 +/- 1.1 g C in the control treatment to 12.8 +/- 0.6 g C (mean +/- SE), mainly due to a prolonged growing season in autumn. DOC concentrations did not differ between the treatments, but organic carbon sedimentation increased by 60% from 96 +/- 9.6 to 152 +/- 16 g Cm-2 yaer(-1) (mean +/- SE) from control to warm treatments. Enhanced decomposition of plant detritus in the warm treatment, however, compensated for the increased sedimentation. As a result, net carbon burial was 40 +/- 5.7 g Cm-2 year(-1) in both temperature treatments when fluxes were combined into a carbon budget model. These results indicate that warming can increase the turnover of organic carbon in shallow macrophyte-dominated systems, while not necessarily affecting net carbon burial on a system scale. |
英文关键词 | carbon cycle decomposition global warming mineralization phenology primary production sedimentation submerged aquatic plant |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447760300019 |
WOS关键词 | LITTER DECOMPOSITION ; TISSUE STOICHIOMETRY ; PACIFIC-NORTHWEST ; CLIMATE-CHANGE ; TEMPERATURE ; LAKES ; NUTRIENT ; GROWTH ; CO2 ; CONSEQUENCES |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/17435 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Netherlands Inst Ecol, KNAW, NIOO, Dept Aquat Ecol, POB 50, NL-6708 PB Wageningen, Netherlands; 2.Leibniz Inst Freshwater Ecol & Inland Fisheries, Dept Ecosyst Res, Berlin, Germany; 3.Radboud Univ Nijmegen, Inst Water & Wetland Res, Dept Aquat Ecol & Environm Biol, Nijmegen, Netherlands; 4.Wageningen Univ, Dept Aquat Ecol & Water Qual Management, Wageningen, Netherlands; 5.Univ Utrecht, Dept Biol, Ecol & Biodivers Grp, Utrecht, Netherlands |
推荐引用方式 GB/T 7714 | Velthuis, Mandy,Kosten, Sarian,Aben, Ralf,et al. Warming enhances sedimentation and decomposition of organic carbon in shallow macrophyte-dominated systems with zero net effect on carbon burial[J]. GLOBAL CHANGE BIOLOGY,2018,24(11):5231-5242. |
APA | Velthuis, Mandy.,Kosten, Sarian.,Aben, Ralf.,Kazanjian, Garabet.,Hilt, Sabine.,...&Bakker, Elisabeth S..(2018).Warming enhances sedimentation and decomposition of organic carbon in shallow macrophyte-dominated systems with zero net effect on carbon burial.GLOBAL CHANGE BIOLOGY,24(11),5231-5242. |
MLA | Velthuis, Mandy,et al."Warming enhances sedimentation and decomposition of organic carbon in shallow macrophyte-dominated systems with zero net effect on carbon burial".GLOBAL CHANGE BIOLOGY 24.11(2018):5231-5242. |
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