title: The combined effects of sediment accretion (burial) and nutrient enrichment on the growth and propagation of Phalaris arundinacea.
abstract: Sediment accretion (burial) and nutrient enrichment occur concurrently in lacustrine wetlands, but the role of these two aspects of sedimentation on macrophyte performance has rarely been examined. Here, we investigated the concurrent effects of sediment accretion and nutrient enrichment on the growth and propagation of Phalaris arundinacea L. using a factorial sediment burial by nutrient addition experimental design. Regardless of burial depth, nutrient addition increased biomass accumulation, shoot mass ratio, the number of rhizomes, and the length of ramets and rhizomes. While burial had little effect on plant growth and propagation, it had an interactive effect with nutrient addition on belowground growth and ramet production. These results indicate that P. arundinacea is tolerant to burial, which allows it to grow in habitats with high sedimentation rates. However, the enhanced growth and propagation of P. arundinacea following sedimentation were primarily related to nutrient enrichment. This suggests that nutrient enrichment of sediments, which occurs in many lacustrine wetlands, increases the risk of invasion by P. arundinacea.
authors.affiliation: Key Laboratory of Agro-ecological Processes in Subtropical Region, The Chinese Academy of Sciences, Hunan 410125, China.|Dongting Lake Station for Wetland Ecosystem Research, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha 410125, China.
authors.forename: Xinsheng
authors.initials: X
authors.lastname: Chen
authors.affiliation: Soil and Fertilizer Institute of Hunan province, Hunan Academy of Agricultural Sciences, Changsha 410125, China.
authors.forename: Yulin
authors.initials: Y
authors.lastname: Liao
authors.affiliation: Key Laboratory of Agro-ecological Processes in Subtropical Region, The Chinese Academy of Sciences, Hunan 410125, China.|Dongting Lake Station for Wetland Ecosystem Research, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha 410125, China.
authors.forename: Yonghong
authors.initials: Y
authors.lastname: Xie
authors.affiliation: Key Laboratory of Agro-ecological Processes in Subtropical Region, The Chinese Academy of Sciences, Hunan 410125, China.|Dongting Lake Station for Wetland Ecosystem Research, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha 410125, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Wu
authors.affiliation: Key Laboratory of Agro-ecological Processes in Subtropical Region, The Chinese Academy of Sciences, Hunan 410125, China.|Dongting Lake Station for Wetland Ecosystem Research, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha 410125, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Li
authors.affiliation: Key Laboratory of Agro-ecological Processes in Subtropical Region, The Chinese Academy of Sciences, Hunan 410125, China.|Dongting Lake Station for Wetland Ecosystem Research, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha 410125, China.
authors.forename: Zhengmiao
authors.initials: Z
authors.lastname: Deng
authors.affiliation: Key Laboratory of Agro-ecological Processes in Subtropical Region, The Chinese Academy of Sciences, Hunan 410125, China.|Dongting Lake Station for Wetland Ecosystem Research, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha 410125, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Li
mesh_terms: D018533:Biomass; D019015:Geologic Sediments / Q000737:chemistry*; D031783:Phalaris / Q000254:growth & development*; D018520:Plant Shoots / Q000254:growth & development; D027343:Rhizome / Q000254:growth & development; D012987:Soil / Q000737:chemistry*; D053833:Wetlands
chemical_list: D012987:Soil