Abstract
This study evaluated the succession process of aquatic macrophytes after 150 years of alluviation in the Modern Yellow River Delta, China, and identified the roles of various environmental parameters that regulate vegetation succession. From 2007 to 2008, 214 quadrats were surveyed and 19 environmental parameters were measured, including elevation, plot distance from the seashore, 10 water parameters, and 7 soil parameters. Forty-six aquatic macrophytes belonging to 20 families and 34 genera were identified across the entire delta. Emergent and submerged plants were the most frequent species, accounting for 58.7 and 34.8 % of all species, respectively. Detrended canonical correspondence analysis showed that the presence of aquatic macrophytes in this delta was primarily regulated by water salinity, soil salinity, and distance from the seashore, followed by nutrient concentrations (e.g., NH4 +, total soil N and PO4 − of water). Salinity-tolerant species (e.g., Ruppia maritima, Phragmites australis, and Typha angustifolia) tended to be widely distributed across the entire delta. In contrast, salinity-sensitive species (e.g., Ceratophyllum demersum, Hydrilla verticillata, and Potamogeton malaianus) tended to be distributed in areas at the early stages of succession, which were relatively distant from the shore. Moreover, this study also confirmed that species richness and diversity were negatively correlated with water and soil salinity, which in turn were negatively correlated with plot distance from the shore. These data indicate that the primary drivers of aquatic macrophyte succession in this delta are water and soil salinity. The information assimilated here is used to propose management practices for the protection of aquatic macrophytes in the Yellow River Delta.
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Acknowledgments
The authors thank Dr. B. Ren for field assistance and Dr. D. Wang for the identification of plant species. We also thank Y. H. Chen for conducting the soil analysis and Dr. G. Hu for conducting the data analysis. This study was supported by the National Basic Research Program of China (2012CB417005; 2009CB421103) and the National Natural Science Foundation of China (31200271; 31170342).
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Li, F., Xie, Y., Chen, X. et al. Succession of aquatic macrophytes in the Modern Yellow River Delta after 150 years of alluviation. Wetlands Ecol Manage 21, 219–228 (2013). https://doi.org/10.1007/s11273-013-9297-3
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DOI: https://doi.org/10.1007/s11273-013-9297-3