Print Email Facebook Twitter The relationship between inundation duration and Spartina alterniflora growth along the Jiangsu coast, China Title The relationship between inundation duration and Spartina alterniflora growth along the Jiangsu coast, China Author Li, R. (TU Delft Coastal Engineering) Yu, Qian (Nanjing University) Wang, Yunwei (Hohai University) Wang, Zhengbing (TU Delft Coastal Engineering; Deltares) Gao, Shu (East China Normal Univeristy) Flemming, Burg (Senckenberg Institute) Date 2018 Abstract The above-ground biomass of Spartina alterniflora salt marsh meadows is influenced by numerous interacting factors, among them elevation, tidal range and inundation duration. Bio-geomorphological models make use of either linear or quadratic equations, but it is important to be aware that the variables are area specific and hence not generic. In order to explore the vegetation growth pattern and its influencing factors along the Jiangsu coast, China, field surveys were conducted in two typical S. alterniflora marshes along the coast of Dafeng and Rudong. To combine the influence of elevation and the effect of tidal range, the inundation ratio (IR) is introduced as a novel parameter, which is the ratio between inundation duration and the duration of the whole tidal period concerned. The relationship between above-ground biomass and IR can be expressed by a quadratic equation. The optimal inundation ratio for S. alterniflora along the Jiangsu coast ranges from 0.21 to 0.26, which is much lower than, for example, that for the marsh of North Inlet (0.35), South Carolina, and the Virginia Coast Reserve(0.41), USA. Tidal range plays a significant role in that a larger tidal range leads to a smaller optimal IR, and that the landward and seaward limits are displaced toward higher ground elevations. In macrotidal regions the submergence depth is larger, which results in enhanced submergence and salinity stress for the entire marsh, causing it to shift toward higher elevations. Tidal range is an important factor influencing the growth pattern of S. alterniflora, but geomorphological factors such as topographic profiles, and the presence of cliffs and tidal creeks must also be taken into account. Subject Spartina alternifloraAbove-ground biomassInundation durationJiangsu coast To reference this document use: http://resolver.tudelft.nl/uuid:098a0959-f449-4c14-9276-ee1cf810b36c DOI https://doi.org/10.1016/j.ecss.2018.08.027 Embargo date 2020-09-10 ISSN 0272-7714 Source Estuarine, Coastal and Shelf Science, 213, 305-313 Part of collection Institutional Repository Document type journal article Rights © 2018 R. Li, Qian Yu, Yunwei Wang, Zhengbing Wang, Shu Gao, Burg Flemming Files PDF accepted_manuscript1.pdf 6.53 MB Close viewer /islandora/object/uuid:098a0959-f449-4c14-9276-ee1cf810b36c/datastream/OBJ/view