BIOTURBATION OF TWO CHIRONOMID SPECIES ON NUTRIENT EXCHANGE AT SEDIMENT-WATER INTERFACE IN A CHINESE SHALLOW EUTROPHIC LAKE
文献类型：期刊论文
| 作者 | Jiang, Ping-Hong1,2; Ji, Lei1,2; Xiao, Wen-Juan1,2; Huang, Dai-Zhong1,2; Liu, Yun-Bing1,2; Song, Chun-Lei1; Cao, Xiu-Yun1; Zhou, Yi-Yong1 |
| 刊名 | FRESENIUS ENVIRONMENTAL BULLETIN
 |
| 出版日期 | 2010 |
| 卷号 | 19期号:5A页码:902-910 |
| 关键词 | bioturbation chironomids sedimentary oxygen demand (SOD) nutrient exchanges shallow lake eutrophication |
| ISSN号 | 1018-4619 |
| 通讯作者 | Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, 7 Donghu S Rd, Wuhan 430072, Hubei Province, Peoples R China |
| 中文摘要 | Bioturbation caused by chironomids has a great impact on sediment environment and nutrient cycling, which is of ecological significance in eutrophic lakes. Greatly differing in feeding and burrowing activities, the chironomid species may play distinct roles in driving nutrient cycling, Bioturbation effects of chiromomids were studied in Lake Donghu where Chironomus plumosus and Tanypus chinensis were detected to be the dominant species. The sediment phosphorus was also fractionated. The patterns of nutrient fluxes across the sediment-water interface bioturbated by these 2 species were studied using laboratory experiments. The burrowing activities of T. chinensis larvae in the surface sediment had little effect on the sedimentary oxygen demand (SOD) (28.9+/-1.5 mmol . m(-2) . d(-1)), consequently, with relatively limited inorganic-N release (94.6+/-6.0 mg . m(-2)) from sediment mainly in the form of NO3- (accounting for 82%) (p>0.05). Their excretion appears to be the major source contributing to the increase of P-release (15.58+/-0.22 mg . m(-2), 1.4 times higher than control, p<0.05). Ch. plumosus brought about a significantly higher SOD (55.7+/-4.6 mmol . m(-2) d(-1)) together with pulse of NH4+ (20.86+/-0.82 mg . m(-2). d(-1)) and SRP (3.66+/-0.12 mg . m(-2) . d(-1)) release from sediment in the early incubation time (p<0.05). Later, the release of NH4+ significantly decreased from 140.05+/-3.71 to 79.72+/-12.66 mg . m(-2), while NO3--release markedly increased from 33.31+/-6.22 to 64.58+/-5.99 mg . m(-2) (p<0.05). Conversions of inorganic N species stimulated by bioturbation were the dominant processes in controlling the inorganic-N fluxes. Noticeably, the linear decrease of SRP from 18.85+/-1.85 to 8.70+/-0.15 mg . m(-2) suggested the dominant role of oxygen bio-irrigation in P-cycling. Especially, it is ecologically important in shallow eutrophic lakes like Lake Donghu where sediment P is dominated by iron-bound P. Moreover, these two species of chironomid larvae induced noticeable particulate nutrient release from sediment, in addition to fluxes of dissolved ones. Briefly, these 2 species of chironomids exerted distinct impacts on the sedimentary metabolism in terms of SOD and nutrient flux rates by their own ways. |
| 英文摘要 | Bioturbation caused by chironomids has a great impact on sediment environment and nutrient cycling, which is of ecological significance in eutrophic lakes. Greatly differing in feeding and burrowing activities, the chironomid species may play distinct roles in driving nutrient cycling, Bioturbation effects of chiromomids were studied in Lake Donghu where Chironomus plumosus and Tanypus chinensis were detected to be the dominant species. The sediment phosphorus was also fractionated. The patterns of nutrient fluxes across the sediment-water interface bioturbated by these 2 species were studied using laboratory experiments. The burrowing activities of T. chinensis larvae in the surface sediment had little effect on the sedimentary oxygen demand (SOD) (28.9+/-1.5 mmol . m(-2) . d(-1)), consequently, with relatively limited inorganic-N release (94.6+/-6.0 mg . m(-2)) from sediment mainly in the form of NO(3)(-) (accounting for 82%) (p>0.05). Their excretion appears to be the major source contributing to the increase of P-release (15.58+/-0.22 mg . m(-2), 1.4 times higher than control, p<0.05). Ch. plumosus brought about a significantly higher SOD (55.7+/-4.6 mmol . m(-2) d(-1)) together with pulse of NH(4)(+) (20.86+/-0.82 mg . m(-2). d(-1)) and SRP (3.66+/-0.12 mg . m(-2) . d(-1)) release from sediment in the early incubation time (p<0.05). Later, the release of NH(4)(+) significantly decreased from 140.05+/-3.71 to 79.72+/-12.66 mg . m(-2), while NO(3)(-)-release markedly increased from 33.31+/-6.22 to 64.58+/-5.99 mg . m(-2) (p<0.05). Conversions of inorganic N species stimulated by bioturbation were the dominant processes in controlling the inorganic-N fluxes. Noticeably, the linear decrease of SRP from 18.85+/-1.85 to 8.70+/-0.15 mg . m(-2) suggested the dominant role of oxygen bio-irrigation in P-cycling. Especially, it is ecologically important in shallow eutrophic lakes like Lake Donghu where sediment P is dominated by iron-bound P. Moreover, these two species of chironomid larvae induced noticeable particulate nutrient release from sediment, in addition to fluxes of dissolved ones. Briefly, these 2 species of chironomids exerted distinct impacts on the sedimentary metabolism in terms of SOD and nutrient flux rates by their own ways. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Environmental Sciences |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | PLUMOSUS LARVAE ; ORGANIC-MATTER ; PEROXODISULFATE OXIDATION ; MARINE-SEDIMENTS ; PHOSPHORUS FLUX ; TOTAL NITROGEN ; OXYGEN-UPTAKE ; FRESH-WATER ; DENITRIFICATION ; RATES |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [40730528]; state major project of water pollution control and management [2009ZX07106-001]; National Basic Research Program of China [2008 CB418005]; State Key Laboratory of Freshwater Ecology and Biotechnology [Y05B101F01] |
| 语种 | 英语 |
| WOS记录号 | WOS:000279092700001 |
| 公开日期 | 2010-12-23 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/13695]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei Province, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Ping-Hong,Ji, Lei,Xiao, Wen-Juan,et al. BIOTURBATION OF TWO CHIRONOMID SPECIES ON NUTRIENT EXCHANGE AT SEDIMENT-WATER INTERFACE IN A CHINESE SHALLOW EUTROPHIC LAKE[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2010,19(5A):902-910. |
| APA | Jiang, Ping-Hong.,Ji, Lei.,Xiao, Wen-Juan.,Huang, Dai-Zhong.,Liu, Yun-Bing.,...&Zhou, Yi-Yong.(2010).BIOTURBATION OF TWO CHIRONOMID SPECIES ON NUTRIENT EXCHANGE AT SEDIMENT-WATER INTERFACE IN A CHINESE SHALLOW EUTROPHIC LAKE.FRESENIUS ENVIRONMENTAL BULLETIN,19(5A),902-910. |
| MLA | Jiang, Ping-Hong,et al."BIOTURBATION OF TWO CHIRONOMID SPECIES ON NUTRIENT EXCHANGE AT SEDIMENT-WATER INTERFACE IN A CHINESE SHALLOW EUTROPHIC LAKE".FRESENIUS ENVIRONMENTAL BULLETIN 19.5A(2010):902-910. |
入库方式： OAI收割
来源：水生生物研究所
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