Decomposition of macroalgal blooms influences phosphorus release from the sediments and implications for coastal restoration in Swan Lake, Shandong, China
文献类型：期刊论文
| 作者 | Gao, Li1; Zhang, Luhua1; Hou, Jinzhi1; Wei, Quan1; Fu, Feng1; Shao, Hongbo2,3 |
| 刊名 | ECOLOGICAL ENGINEERING
 |
| 出版日期 | 2013-11-01 |
| 卷号 | 60页码:19-28 |
| 关键词 | Macroalgal blooms Chaetomorpha decomposition Sediments Phosphorus release Swan Lake Pollution control Saline intrusion Coastal restoration Soils |
| ISSN号 | 0925-8574 |
| 英文摘要 | Green tides (macroalgal blooms) have occurred worldwide frequently in coastal areas during the last few decades, which dramatically modify nutrient recycling in water column and the sediments. Rongcheng Swan Lake is a shallow coastal lagoon in eastern Shandong Peninsula, China, suffering from extensive macroalgal blooms dominated by Chaetomorpha spp. during the early summer and autumn. In the present study, the sediments collected from different lake regions and filamentous Chaetomorpha linum were incubated in the laboratory to investigate the influence of macroalgal decomposition on phosphorus (P) release from the sediments. In additon, some water quality parameters, including dissolved oxygen (DO), chemical oxygen demand (COD) and pH, were monitored during the 30-day experiment. Due to the Chaetomorpha decomposition, DO concentration and pH value in overlying water declined greatly. DO concentrations in sediment + 30 g algae + water treatment were very low (< 0.15 mg L-1), which remained anaerobic throughout the incubation. In addition, COD concentration in the treatments with algae increased dramatically and the maximum varied between 20.07 and 69.26 mg L-1. In general, with the addition of greater amount of decomposing algae, a more visible change in each parameter was observed. During the decomposition process, SRP concentration in overlying water increased significantly, with the maximum of 1.51 mg L-1. At the two studied regions, SRP concentrations in sediment + 30 g algae + water were significantly higher than those in sediment + water and algae + water treatments, respectively (p < 0.05). The remarkable increase in P level in overlying water in sediment + algae + water treatment was mainly due to the P release from decomposing macroalgae during the initial 5 days of incubation and from the sediments at late stage, respectively. The decomposition of large qualities of Chaetomorpha promoted sediment P release obviously through changing environmental conditions, whose influence effect differed between the macroalgal dominated and non-dominated zone. In the macroalgal bloom zone, P release amount was high and the P released from sediments constituted the most part of P increase in overlying water. Our results indicate that the influence of Chaetomorpha blooms on sediment P release can not be neglected during the degradation phase in Swan Lake. (C) 2013 Elsevier B. V. All rights reserved. |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Engineering |
| 关键词[WOS] | CLADOPHORA-GLOMERATA ; PILAYELLA-LITTORALIS ; WATER INTERFACE ; DIANCHI LAKE ; ALGAL BLOOMS ; FRACTIONS ; ESTUARY ; TAIHU ; EUTROPHICATION ; CONSEQUENCES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000326239700003 |
| 公开日期 | 2016-04-26 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/9058]  |
| 专题 | 烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室 |
| 作者单位 | 1.Yantai Univ, Ocean Sch, Yantai 264005, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Bioresources Utilizat, Yantai 264003, Peoples R China 3.Qingdao Univ Sci & Technol, Inst Life Sci, Qingdao 266042, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Li,Zhang, Luhua,Hou, Jinzhi,et al. Decomposition of macroalgal blooms influences phosphorus release from the sediments and implications for coastal restoration in Swan Lake, Shandong, China[J]. ECOLOGICAL ENGINEERING,2013,60:19-28. |
| APA | Gao, Li,Zhang, Luhua,Hou, Jinzhi,Wei, Quan,Fu, Feng,&Shao, Hongbo.(2013).Decomposition of macroalgal blooms influences phosphorus release from the sediments and implications for coastal restoration in Swan Lake, Shandong, China.ECOLOGICAL ENGINEERING,60,19-28. |
| MLA | Gao, Li,et al."Decomposition of macroalgal blooms influences phosphorus release from the sediments and implications for coastal restoration in Swan Lake, Shandong, China".ECOLOGICAL ENGINEERING 60(2013):19-28. |
入库方式： OAI收割
来源：烟台海岸带研究所
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