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DOI | 10.1016/j.ecoleng.2014.09.116 |
Sedimentation in created freshwater riverine wetlands: 15 years of succession and contrast of methods | |
Mitsch, William J.1; Nedrich, Sara M.2; Harter, Sarah K.3; Anderson, Christopher4; Nahlik, Amanda M.5; Bernal, Blanca6 | |
发表日期 | 2014-11-01 |
ISSN | 0925-8574 |
卷号 | 72页码:25-34 |
英文摘要 | This study summarizes five separate sedimentation studies spanning 15 years (years 3-17 following wetland creation in 1994) of two 1 ha experimental flow-through wetlands. Included are methods and analyses of the most recent (2009-2010) comparative study that attempted to quantify both erosion and bioturbation processes. Depending on techniques used, two distinct types of sedimentation rates were estimated-gross and net sedimentation. Gross sedimentation in 2004-2005 (years 11 and 12) using sediment trap bottles was 45 kg m(-2) for 4 months during and after spring flood pulsing conditions in 2004 and 39 kg m(-2) for the same 4 months during and after steady flow conditions in 2005. Annual sediment accretion using feldspar and other horizon markers was 31.7 +/- 4.4 kg m(-2) yr(-1) (4.2 +/- 0.6 cm yr(-1)) in 1996 (year 3 after wetland creation) and 34.4 +/- 4.5 kg m(-2) yr(-1) (5.5 +/- 0.8 cm yr(-1)) in 2009 (year 16 after wetland creation). Net sedimentation using soil cores to estimate accumulation of sediments over antecedent soil horizon layers was 4.7 +/- 0.3 kg m(-2) yr(-1) (0.9 +/- 0.07 cm yr(-1)) in 2004 (year 11) and 6.0 +/- 0.4 kg m(-2) yr(-1) (0.9 +/- 0.06 cm yr(-1)) in 2009 (year 16). Net sedimentation, using estimates of sedimentation and erosion with the sediment erosion table (SET) method in 2009-2010 (years 16-17) was 3.9 +/- 6.1-9.0 kg m(-2) yr(-1) (1.3 +/- 0.8-1.4 cm yr(-1)). Bioturbation by macrofauna significantly decreased sedimentation rates during the 2009 (year 16) study. Spatial patterns, consistent among horizon marker and net sedimentation studies, showed that deep, open-water areas had higher rates of sedimentation than shallow areas with emergent vegetation, and that sedimentation rates were higher when closer to the inflow than at the outflow of these flow-through wetlands. Net sedimentation of these created riverine wetlands ranged from 1.2 cm/yr to 1.4 cm/yr, suggesting that these wetlands will accumulate about 30 cm of sediments in a little more than two decades. (C) 2014 Elsevier B.V. All rights reserved. |
英文关键词 | Freshwater marsh;Olentangy River Wetland Research Park;Sedimentation;Erosion;Bioturbation;Horizon markers |
语种 | 英语 |
WOS记录号 | WOS:000346387300003 |
来源期刊 | ECOLOGICAL ENGINEERING
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来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/61517 |
作者单位 | 1.Florida Gulf Coast Univ, Naples, FL 34112 USA; 2.Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA; 3.Ohio EPA Southeast Dist Off, Logan, OH 43138 USA; 4.Auburn Univ, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA; 5.US EPA, Western Ecol Div, Corvallis, OR 97333 USA; 6.Smithsonian Environm Res Ctr, Biogeochem Lab, Edgewater, MD 21037 USA |
推荐引用方式 GB/T 7714 | Mitsch, William J.,Nedrich, Sara M.,Harter, Sarah K.,et al. Sedimentation in created freshwater riverine wetlands: 15 years of succession and contrast of methods[J]. 美国环保署,2014,72:25-34. |
APA | Mitsch, William J.,Nedrich, Sara M.,Harter, Sarah K.,Anderson, Christopher,Nahlik, Amanda M.,&Bernal, Blanca.(2014).Sedimentation in created freshwater riverine wetlands: 15 years of succession and contrast of methods.ECOLOGICAL ENGINEERING,72,25-34. |
MLA | Mitsch, William J.,et al."Sedimentation in created freshwater riverine wetlands: 15 years of succession and contrast of methods".ECOLOGICAL ENGINEERING 72(2014):25-34. |
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