Effects of crab disturbance on water and salt exchange in coastal wetlands

被引：0
|
作者：
Ying Z. [1 ]
Zhan L. [1 ]
Tang H. [1 ]
Xin P. [1 ,2 ]
机构：
[1] College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing
[2] State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing
来源：
Water Resources Protection | 2021年 / 37卷 / 03期
关键词：
Bioturbation; Coastal wetlands; Crab; Sediment; Water and salt transport;
D O I：
10.3880/j.issn.1004-6933.2021.03.023
中图分类号：
学科分类号：
摘要：
In order to explore the effects of bioturbation on material exchange in coastal wetlands, a controlled laboratory experiment that made crabs as research object was conducted to study the effects of different crab densities on sediment geomorphology changes and water and salt transport under simulated tidal conditions. The results showed that crabs carried a large number of deep sediments to the surface, forming a rugged microtopography, which resulted in a significant increase of sediment surface area. Crab activities not only effectively promoted the exchange of surface water and groundwater but also accelerated salt migration process of shallow soil. The amount of surface water and groundwater exchange and salt transport increased significantly with the density of crabs. Therefore, it could be concluded that bioturbation is an important factor affecting sediment geomorphology, which greatly accelerates water and salt exchange in coastal wetlands. © 2021, Editorial Board of Water Resources Protection. All rights reserved.
引用
下载
收藏
页码：152 / 157
页数：5
相关论文
共 28 条
  • [1] TANG Honggen, ZHOU Tingzhang, XIN Pei, Stimulation of sediment deposition to root water uptake and soil water change in wetland near sea, Water Resources Protection, 36, 4, pp. 87-92, (2020)
  • [2] DONATO D C, KAUFFMAN J B, MURDIYARSO D, Et al., Mangroves among the most carbon-rich forests in the tropics, Nature Geoscience, 4, 5, pp. 293-297, (2011)
  • [3] GEDAN K B, KIRWAN M L, WOLANSKI E, Et al., The present and future role of coastal wetland vegetation in protecting shorelines: Answering recent challenges to the paradigm, Climatic Change, 106, 1, pp. 7-29, (2011)
  • [4] HU Zhiyuan, BAO Yixin, CHENG Hongyi, Et al., Research progress on ecology of natural wetland zoobenthos in China[J], Chinese Journal of Ecology, 28, 5, pp. 959-968, (2009)
  • [5] LOHRER A M, THRUSH S F, GIBBS M M., Bioturbators enhance ecosystem function through complex biogeochemical interactions, Nature, 431, 7012, pp. 1092-1095, (2004)
  • [6] DIETRICH W E, PERRON J T., The search for a topographic signature of life, Nature, 439, 7075, pp. 411-418, (2006)
  • [7] WANG Han, YAN Wenming, SONG Lanlan, Et al., Bioturbation effects of Chironomus plumosus on structural characteristics of sediment-water interface, Water Resources Protection, 33, 5, pp. 177-182, (2017)
  • [8] CHEN Xiaoxuan, CHEN Shuyun, ZENG Congsheng, Et al., Effect of crabs on soil carbon, nitrogen, phosphorus contentration and ecological stoichiometry in Minjiang River estuarine wetlands, Acta Scientiae Circumstantiae, 38, 3, pp. 1179-1188, (2018)
  • [9] ESCAPA M, MINKOFF D R, PERILLO G M, Et al., Direct and indirect effects of burrowing crab Chasmagnathus granulatus activities on erosion of southwest Atlantic Sarcocornia-dominated marshes, Limnology and Oceanography, 52, 6, pp. 2340-2349, (2007)
  • [10] CAROL E S, KRUSE E E, POUSA J L., Influence of the geologic and geomorphologic characteristics and of crab burrows on the interrelation between surface water and groundwater in an estuarine coastal wetland, Journal of Hydrology, 403, 3, pp. 234-241, (2011)
123