The effect of crab burrows on soil‐water dynamics in mangroves

Type Article
Date 2022-03
Language English
Author(s) Arnaud MarieORCID1, 2, 3, Baird Andy J.ORCID2, Morris Paul J.2, Taylor Adam4, Dang Huyen5, 6, Tran Hong Hanh5, Dinh Quang Thoai5, Nguyen Tai Tue7, Polsenaere PierreORCID1
Affiliation(s) 1 : IFREMER, Laboratoire Environnement et Ressources des Pertuis Charentais (LER‐ PC) La Tremblade, France
2 : School of Geography University of Leeds Leeds, UK
3 : School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston Birmingham, UK
4 : Groundwater Modelling Solutions Ltd, Registered Office, 6 Claremont Buildings, Claremont Bank Shrewsbury, UK
5 : Faculty of Geology and Petroleum Engineering University of Technology, Vietnam National University ‐ Ho Chi Minh City (VNU‐HCM), Vietnam
6 : Institute for Circular Economy Development, Vietnam National University ‐ Ho Chi Minh City (VNU‐HCM), vietnam
7 : VNU‐University of Science ‐ 334 Nguyen Trai, Thanh Xuan Hanoi ,Vietnam
Source Hydrological Processes (0885-6087) (Wiley), 2022-03 , Vol. 36 , N. 3 , P. e14522 (8p.)
DOI 10.1002/hyp.14522
WOS© Times Cited 2
Note This article also appears in: HPToday: Scientific Briefing
Keyword(s) burrow, drainage, groundwater, mangrove soil, sediment matrix, soil water content
Abstract

Many mangrove ecosystem services, such as carbon sequestration, are closely linked to mangrove soil water content, which in turn is thought to depend on animal burrow density and the properties of the sediment in which the burrows are constructed. We measured the water content in the sediment matrix between crab burrows across 26 plots in a typical, fine-grained (clay), mangrove soil in the Mekong Delta, Vietnam. We found that the water content of the sediment matrix remained more or less constant throughout the tidal cycle, and was independent of burrow density. Our results suggest that there is little exchange of water between the burrows and the associated sediment matrix and that burrows act as an independent pipe network transporting water through the mangrove soil. To check and extend our findings, we used a numerical groundwater model to simulate an idealised burrow in a range of sediment types. The model results confirmed that fine-grained mangrove sediments do not drain readily into adjacent animal burrows because of their very low permeability. Our results have important implications for understanding and forecasting mangrove carbon dynamics with sea level rise.

Full Text
File Pages Size Access
Publisher's official version 26 5 MB Open access
Supporting information 1. Video footage of burrows being filled during a flood tide and floating platform 882 KB Open access
Supporting information 2. Modelling of water flow into an idealised burrow with Modflow 6 15 KB Open access
Supporting information 3. Dataset used in this study 72 KB Open access
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How to cite 

Arnaud Marie, Baird Andy J., Morris Paul J., Taylor Adam, Dang Huyen, Tran Hong Hanh, Dinh Quang Thoai, Nguyen Tai Tue, Polsenaere Pierre (2022). The effect of crab burrows on soil‐water dynamics in mangroves. Hydrological Processes, 36(3), e14522 (8p.). Publisher's official version : https://doi.org/10.1002/hyp.14522 , Open Access version : https://archimer.ifremer.fr/doc/00751/86282/