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Effect of typhoon-induced intertidal-flat erosion on dominant macrobenthic species (Meretrix meretrix)

文献类型： 外文期刊

作者： Shi, Benwei 1 ; Yang, Shi Lun 1 ; Temmerman, Stijn 3 ; Bouma, Tjeerd 4 ; Ysebaert, Tom 4 ; Wang, Sikai 8 ; Zhang, Ying 1 ;

作者机构： 1.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai, Peoples R China

2.Minist Commun, Key Lab Port Waterway & Sedimentat Engn, Nanjing Hydraul Res Inst, Nanjing, Peoples R China

3.Univ Antwerp, Ecosyst Management Res Grp, Antwerp, Belgium

4.NIOZ Royal Netherlands Inst Sea Res, Dept Estuarine & Delta Syst, Ac Yerseke, Netherlands

5.Univ Utrecht, Ac Yerseke, Netherlands

6.Univ Utrecht, Dept Phys Geog, Utrecht, Netherlands

7.Wageningen Univ & Res, Wageningen Marine Res, Yerseke, Netherlands

8.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai, Peoples R China

9.Fudan Univ, Minist Educ, Key Lab Biodivers Sci & Ecol Engn, Inst Biodivers Sci, Shanghai, Peoples R China

10.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing, Peoples R China

11.Nanjing Hydraul Res Inst, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing, Peoples R China

期刊名称：LIMNOLOGY AND OCEANOGRAPHY （ 影响因子：4.745； 五年影响因子：5.203 ）

ISSN： 0024-3590

年卷期：

页码：

收录情况： SCI

摘要： Benthic animal populations inhabiting intertidal flats provide important ecosystem functions and services that may be disrupted by physical disturbances such as tropical cyclones, which are predicted to increase in frequency and intensity under future climate change. However, the spatial reach at which tropical cyclones impact macrobenthos populations in intertidal flats remains poorly understood. We examined whether a typhoon with a center that remained more than 1400 km away from the study site could trigger severe erosion of intertidal flats and adversely affect macrobenthos populations. We undertook simultaneous measurements of hydrodynamics (waves, currents), morphodynamics (erosion, accretion) and density and biomass of the macrobenthic bivalve Meretrix meretrix during the passage of this typhoon, on an intertidal flat on the Chinese coast. Our results showed that, in spite of the considerable distance from the storm center, the bed shear stress greatly exceeded the critical value for erosion, resulting in rapid erosion of approximately 10 cm and a nearly 50% reduction in both the density and the biomass of the clam species. Our findings suggest that if storms become more frequent and more intense in a future warmer climate, they may increase physical disturbances to intertidal flats and their benthic animal populations, even at great distances from storm centers.

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