文献类型：期刊文献

英文题名：Phragmites australis meets Suaeda salsa on the "red beach": Effects of an ecosystem engineer on salt-marsh litter decomposition

作者：Cui, Lijuan[1] Pan, Xu[1] Li, Wei[1] Zhang, Xiaodong[1] Liu, Guofang[2] Song, Yao-Bin[3] Yu, Fei-Hai[4] Prinzing, Andreas[5] Cornelissen, Johannes H.C.[6]

通信作者：Pan, Xu

机构：[1] Beijing Key Laboratory of Wetland Services and Restoration, Institute of Wetland Research, Chinese Academy of Forestry, Beijing, 100091, China; [2] State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China; [3] Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China; [4] Institute of Wetland Ecology & Clone Ecology, Taizhou University, Taizhou, 318000, China; [5] Université de Rennes 1, Centre National de la Recherche Scientifique Campus de Beaulieu, Research Unit Ecobio, Batiment 14 A, Rennes, 35042, France; [6] Systems Ecology, Department of Ecological Science, Faculty of Earth and Life Sciences, Vrije Universiteit Amsterdam, Amsterdam, 1081 HV, Netherlands

年份：2019

卷号：693

外文期刊名：Science of the Total Environment

收录：EI(收录号：20193107247132);Scopus(收录号：2-s2.0-85069709300)

语种：英文

外文关键词：Carbon - Decomposition - Ecosystems - Engineers - Forestry - Lignin - Nutrients - Phosphorus

摘要：Suaeda salsa is a pioneer species in coastal wetlands of East Asia and recently an ecosystem engineer species, Phragmites australis, has started to enter into S. salsa communities owing to either autogenic or external drivers. The consequences of this phenomenon on the ecosystem functions of coastal wetlands are still unclear, especially for decomposition processes. Here we compared the decomposition rate of S. salsa litter, and associated litter chemistry dynamics, between sites with and without P. australis encroachment. We conducted a litter transplantation experiment to tease apart the effects of litter quality and decomposing environment or decomposer community composition. Our results showed that P. australis encroachment led to higher carbon and phosphorus losses of S. salsa litter, but equal losses of total mass, lignin, hemicellulose and nitrogen. Phragmites australis encroachment might affect decomposition rate indirectly by making S. salsa produce litter with higher lignin concentrations or via increasing the fungal diversity for decomposition. Moreover, P. australis as an ecosystem engineer might also alter the allocation of total phosphorus between the plants and the soils in coastal wetlands. Our findings indicate that P. australis could impact aboveground and belowground carbon and nutrient dynamics in coastal wetlands, and highlight the important consequences that encroaching plant species, especially ecosystem engineers, can have on ecosystem functions and services of coastal wetlands, not only in East Asia but probably also elsewhere in the world. ? 2019 Elsevier B.V.