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DOI | 10.1007/s13157-018-1049-y |
Litter Decomposition Rates in Six Mine Water Wetlands and Ponds in Oklahoma | |
Brumley, Jessica1,2; Nairn, Robert1 | |
发表日期 | 2018-10-01 |
ISSN | 0277-5212 |
卷号 | 38期号:5页码:965-974 |
英文摘要 | Six ecosystems were examined for litter decomposition rates: three volunteer wetlands in Tri-State Lead-Zinc Mining District and three ecologically engineered coal mine drainage passive treatment systems in Arkoma Basin of eastern Oklahoma. Litter bag decomposition experiments were completed using 5-g standing dead Typha spp., dried to constant weight, and homogenized in fiberglass screen bags. Replicates were placed in different hydrologic zones or treatment cells and bags were collected five times over 250days. A single exponential decay model expressed decomposition rates and a least squares regression was fit to calculate decomposition rates. All volunteer wetlands showed similar decomposition rates despite differences in hydrology, though greater mass was lost in flooded hydrologic zones (59-66% flooded zones versus 69-71% saturated zones litter mass remaining). The passive treatment systems showed significant differences in rates between the different treatment cells and rates were greater in litter bags closer to system outflows (66-79% near inflow versus 17-60% near outflow litter mass remaining). System decay constants (k) from this study (k=0.001-0.003) were within range for other Typha spp. systems (k=0.001-0.024day(-1)). This study of anthropogenically disturbed ecosystems showed that wetland hydrology influences litter decomposition rates and decomposition rates vary throughout passive treatment systems as water quality changes. |
英文关键词 | Decomposition;Passive treatment;Volunteer wetlands;Metals;Hydrology |
语种 | 英语 |
WOS记录号 | WOS:000450305300010 |
来源期刊 | WETLANDS |
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/59044 |
作者单位 | 1.Univ Oklahoma, Civil Engn & Environm Sci, 202 W Boyd St,Room 334, Norman, OK 73019 USA; 2.US EPA, Natl Res Council, 919 Kerr Res Dr, Ada, OK 74820 USA |
推荐引用方式 GB/T 7714 | Brumley, Jessica,Nairn, Robert. Litter Decomposition Rates in Six Mine Water Wetlands and Ponds in Oklahoma[J]. 美国环保署,2018,38(5):965-974. |
APA | Brumley, Jessica,&Nairn, Robert.(2018).Litter Decomposition Rates in Six Mine Water Wetlands and Ponds in Oklahoma.WETLANDS,38(5),965-974. |
MLA | Brumley, Jessica,et al."Litter Decomposition Rates in Six Mine Water Wetlands and Ponds in Oklahoma".WETLANDS 38.5(2018):965-974. |
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