Effects of macrophytes on ecosystem metabolism and net nutrient uptake in a groundwater fed lowland river
文献类型：期刊论文
| 作者 | Preiner, Stefan3,4; Dai, Yanran1,3; Pucher, Matthias3,4; Reitsema, Rosanne E.2; Schoelynck, Jonas2; Meire, Patrick2; Hein, Thomas3,4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-06-15 |
| 卷号 | 721页码:13 |
| 关键词 | Macrophytes Phosphorus and nitrogen retention Net nutrient uptake Metabolism Groundwater-fed rivers |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.137620 |
| 通讯作者 | Preiner, Stefan(stefan.preiner@boku.ac.at) |
| 英文摘要 | Transport and transformation of inorganic nutrients are influenced by abiotic-biotic interactions and determine downstream water quality. Macrophytes play an important role in these complex ecological interactions. The role of macrophytes was studied in three reaches of the groundwater-fed, oligotrophic River Fischa with different macrophyte coverage and biomass. This was done by measuring metabolism and calculating changes in nutrient loading and concentrations, which were determined via an upstream-downstream mass balance approach. As the dominant autotrophs, we expected macrophytes (i) to have a direct effect by uptake and release, and (ii) an indirect effect by slowing down flow, which results in changed sedimentation patterns and altered conditions for heterotrophic microbial organisms implicating higher turnover and uptake rates. The seasonal development of macrophytes in 2017 had a strong impact on gross primary production, but not on ecosystem respiration. Increase in macrophyte biomass led to higher GPP (max. 5.4 g O(2)m(-2)d(-1)). ER was highest in autumn in the reach with intermediate macrophyte biomass (max. 10.1 g O(2)m(-2)d(-1)). We observed that the autotrophic uptake of phosphorus accounted for 80-145% of the P-PO4-flux and concluded that P-uptake by macrophytes from the sediment is an important source of phosphate for macrophytes in the river. By accumulating fine sediment, macrophytes are improving the availability of phosphate for their own long-term development. N-NO3, represented >99% of the nitrogen flux. N-NO3 net uptake was higher in the reaches with more macrophytes (0.84 vs. 0.12 g m(-2)d(-1)), but in average only 21% of the net uptake could be related to autotrophic nitrogen uptake in the reach with high macrophyte biomass. Dissimilatory uptake by heterotrophic organisms, most probably denitrification, were of high relevance. Macrophytes supported microbial uptake and release by improving conditions and slowing down flow. In the River Fischa, an oligotrophic river with low variability of environmental parameters, macrophytes greatly affected nutrient uptake by direct and indirect pathways. (C) 2020 The Authors. Published by Elsevier B.V. |
| WOS关键词 | AQUATIC ECOSYSTEMS ; STREAM METABOLISM ; NITRATE REMOVAL ; NITROGEN UPTAKE ; DENITRIFICATION ; DYNAMICS ; RESPIRATION ; RESPONSES ; MODEL |
| 资助项目 | Research Foundation-Flanders (FWO)[G0F3217N] ; Austrian Science Fund (FWF)[I3216-N29] ; National Natural Science Foundation of China (NSFC)[51609238] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000535469100001 |
| 出版者 | ELSEVIER |
| 资助机构 | Research Foundation-Flanders (FWO) ; Research Foundation-Flanders (FWO) ; Austrian Science Fund (FWF) ; Austrian Science Fund (FWF) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Research Foundation-Flanders (FWO) ; Research Foundation-Flanders (FWO) ; Austrian Science Fund (FWF) ; Austrian Science Fund (FWF) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Research Foundation-Flanders (FWO) ; Research Foundation-Flanders (FWO) ; Austrian Science Fund (FWF) ; Austrian Science Fund (FWF) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Research Foundation-Flanders (FWO) ; Research Foundation-Flanders (FWO) ; Austrian Science Fund (FWF) ; Austrian Science Fund (FWF) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/36491]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 通讯作者 | Preiner, Stefan |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Univ Antwerp, Dept Biol, Ecosyst Management Res Grp, Univ Pl 1, B-2610 Antwerp, Belgium 3.WasserCluster Lunz, Dr Kupelwieser Promenade 5, A-3293 Lunz Am See, Austria 4.Univ Nat Resources & Life Sci, Inst Hydrobiol & Aquat Ecosyst Management, Gregor Mendel Str 33, A-1180 Vienna, Austria |
| 推荐引用方式 GB/T 7714 | Preiner, Stefan,Dai, Yanran,Pucher, Matthias,et al. Effects of macrophytes on ecosystem metabolism and net nutrient uptake in a groundwater fed lowland river[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,721:13. |
| APA | Preiner, Stefan.,Dai, Yanran.,Pucher, Matthias.,Reitsema, Rosanne E..,Schoelynck, Jonas.,...&Hein, Thomas.(2020).Effects of macrophytes on ecosystem metabolism and net nutrient uptake in a groundwater fed lowland river.SCIENCE OF THE TOTAL ENVIRONMENT,721,13. |
| MLA | Preiner, Stefan,et al."Effects of macrophytes on ecosystem metabolism and net nutrient uptake in a groundwater fed lowland river".SCIENCE OF THE TOTAL ENVIRONMENT 721(2020):13. |
入库方式： OAI收割
来源：水生生物研究所
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