Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Nutrient release characteristics from droppings of grass-foraging waterfowl (Anser brachyrhynchus) roosting in aquatic habitats | |
| Liu, Yuhong1,2,4; Hefting, Mariet M.1; Verhoeven, Jos T. A.1; Klaassen, Marcel1,3,4; Liu, YH (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, 17 Chunhui Rd, Yantai 264003, Shandong, Peoples R China. yu_hong_liu@263.net; marcel.klaassen@deakin.edu.au | |
| 发表期刊 | ECOHYDROLOGY
 |
| ISSN | 1936-0584 |
| 2014-08-01 | |
| 卷号 | 7期号:4页码:1216-1222 |
| 关键词 | Decomposition Net Mineralization Waterfowl Droppings Allochthonous Nutrient Input |
| DOI | 10.1002/eco.1454 |
| 产权排序 | [Liu, Yuhong; Hefting, Mariet M.; Verhoeven, Jos T. A.; Klaassen, Marcel] Univ Utrecht, Inst Environm Biol, NL-3584 CH Utrecht, Netherlands; [Liu, Yuhong] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China; [Klaassen, Marcel] Deakin Univ, Ctr Integrat Ecol, Geelong, Vic 3220, Australia; [Liu, Yuhong; Klaassen, Marcel] Netherlands Inst Ecol NIOO KNAW, NL-6700 AB Wageningen, Netherlands |
| 作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
| 英文摘要 | In recent decades, notably in large parts of the Western World, many waterfowl populations have increased because of increased food availability. Not uncommonly, eutrophication in these areas may occur perhaps not only because of increased dropping loads but also because nutrients are more readily released from droppings than from fresh and decomposing plant material. We conducted an experiment to study this effect comparing the decay rate and nutrient release of fresh grass leaves with that of droppings in water at 10, 20 and 30 degrees C. Using a two-component exponential decay model, allowing distinguishing between an easily decomposable (labile) and recalcitrant fraction of the material, we found that the labile carbon (C) fraction of droppings decomposed faster than that of grass leaves, whereas the recalcitrant C decomposition rate was similar to that of grass leaves. Higher temperature increased C decomposition rates of the labile fractions. No temperature dependence was observed for the recalcitrant fractions. Surprisingly, grass leaves and droppings did not differ in the amounts of nitrogen (N) and phosphorus (P) released in the first 90 days, i.e. more than 60% of N and 40% of P were released into the water column. Continuous mineralization of N and P predominated during decomposition of grass leaves, whereas a massive initial leaching was followed by immobilization and later mineralization during decomposition of droppings. All differences during decomposition of the litter types were attributed to the stoichiometric requirement of decomposers and their temperature sensitivity. Copyright (C) 2013 John Wiley & Sons, Ltd.; In recent decades, notably in large parts of the Western World, many waterfowl populations have increased because of increased food availability. Not uncommonly, eutrophication in these areas may occur perhaps not only because of increased dropping loads but also because nutrients are more readily released from droppings than from fresh and decomposing plant material. We conducted an experiment to study this effect comparing the decay rate and nutrient release of fresh grass leaves with that of droppings in water at 10, 20 and 30 degrees C. Using a two-component exponential decay model, allowing distinguishing between an easily decomposable (labile) and recalcitrant fraction of the material, we found that the labile carbon (C) fraction of droppings decomposed faster than that of grass leaves, whereas the recalcitrant C decomposition rate was similar to that of grass leaves. Higher temperature increased C decomposition rates of the labile fractions. No temperature dependence was observed for the recalcitrant fractions. Surprisingly, grass leaves and droppings did not differ in the amounts of nitrogen (N) and phosphorus (P) released in the first 90 days, i.e. more than 60% of N and 40% of P were released into the water column. Continuous mineralization of N and P predominated during decomposition of grass leaves, whereas a massive initial leaching was followed by immobilization and later mineralization during decomposition of droppings. All differences during decomposition of the litter types were attributed to the stoichiometric requirement of decomposers and their temperature sensitivity. Copyright (C) 2013 John Wiley & Sons, Ltd. |
| 文章类型 | Article |
| 资助机构 | Environmental Sciences & Ecology ; Water Resources |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | OLD SOIL CARBON ; PHOSPHORUS DYNAMICS ; CONSTRUCTED WETLAND ; NITROGEN ; DECOMPOSITION ; LITTER ; MINERALIZATION ; TEMPERATURE ; GEESE ; MACROPHYTE |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Water Resources |
| WOS记录号 | WOS:000340541600014 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/8722 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Liu, YH (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, 17 Chunhui Rd, Yantai 264003, Shandong, Peoples R China. yu_hong_liu@263.net; marcel.klaassen@deakin.edu.au |
| 作者单位 | 1.Univ Utrecht, Inst Environm Biol, NL-3584 CH Utrecht, Netherlands 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China 3.Deakin Univ, Ctr Integrat Ecol, Geelong, Vic 3220, Australia 4.Netherlands Inst Ecol NIOO KNAW, NL-6700 AB Wageningen, Netherlands |
| 推荐引用方式 GB/T 7714 | Liu, Yuhong,Hefting, Mariet M.,Verhoeven, Jos T. A.,et al. Nutrient release characteristics from droppings of grass-foraging waterfowl (Anser brachyrhynchus) roosting in aquatic habitats[J]. ECOHYDROLOGY,2014,7(4):1216-1222. |
| APA | Liu, Yuhong,Hefting, Mariet M.,Verhoeven, Jos T. A.,Klaassen, Marcel,Liu, YH ,&marcel.klaassen@deakin.edu.au.(2014).Nutrient release characteristics from droppings of grass-foraging waterfowl (Anser brachyrhynchus) roosting in aquatic habitats.ECOHYDROLOGY,7(4),1216-1222. |
| MLA | Liu, Yuhong,et al."Nutrient release characteristics from droppings of grass-foraging waterfowl (Anser brachyrhynchus) roosting in aquatic habitats".ECOHYDROLOGY 7.4(2014):1216-1222. |
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