Next Article in Journal
Marine Habitat Mapping Incorporating Both Derivatives of LiDAR Data and Hydrodynamic Conditions
Next Article in Special Issue
Artificial Crab Burrows Facilitate Desalting of Rooted Mangrove Sediment in a Microcosm Study
Previous Article in Journal
Dimethylsulphoniopropionate (DMSP) as an Indicator of Bleaching Tolerance in Scleractinian Corals
Previous Article in Special Issue
Concentrations and Fractionation of Carbon, Iron, Sulfur, Nitrogen and Phosphorus in Mangrove Sediments Along an Intertidal Gradient (Semi-Arid Climate, New Caledonia)
Article Menu

Export Article

Open AccessArticle
J. Mar. Sci. Eng. 2015, 3(2), 466-491; doi:10.3390/jmse3020466

Benthic Nutrient Fluxes from Mangrove Sediments of an Anthropogenically Impacted Estuary in Southern China

1
Leibniz Center for Tropical Marine Ecology, Fahrenheitstr. 6-8, D-28359 Bremen, Germany
2
Leibniz Institute for Baltic Sea Research, Seestr.15, D-18119 Warnemünde, Germany
3
Guangxi Mangrove Research Center, Guangxi Marine Environment & Coastal Wetland Research Center, 92 Chang Qing Dong Lu, Beihai 536000, Guangxi, China
These authors contributed equally to this work.
Present address: Deutsches Elektronen-Synchrotron, Notkestra
*
Author to whom correspondence should be addressed.
Academic Editors: Joseph M. Smoak and Christian Joshua Sanders
Received: 5 May 2015 / Accepted: 16 June 2015 / Published: 23 June 2015
(This article belongs to the Special Issue Biogeochemical Cycles in Mangrove Forests)
View Full-Text   |   Download PDF [1301 KB, uploaded 23 June 2015]   |  

Abstract

Mangroves serve as either sinks or sources for inorganic and organic nutrients and can mitigate anthropogenic nutrient pollution, control the production in adjacent systems, and prevent eutrophication. To better understand the nutrient dynamics in a subtropical mangrove, we employed a three-way approach in the Nanliu River Estuary, southern China: Pore water profiles and sediment incubations revealed benthic early diagenesis as well as sediment–water exchange of dissolved nutrients and oxygen, while tidal sampling of estuarine and mangrove water identified source and sink functions of the entire mangrove forest. Fluxes of oxygen during incubations were always directed into the sediment, indicating heterotrophy of the system. There was a net uptake of dissolved inorganic nitrogen, mainly caused by nitrate influx, while ammonium and nitrite showed variable flux direction. Despite high pore water concentrations, phosphate and silica showed net uptake. Fluxes of dissolved organic carbon were generally low except for high efflux in the dark following a storm event. Due to the combination of small forest area and strong anthropogenic nutrient input, the net sink function for dissolved nitrogen and phosphorus provides no significant buffer against the eutrophication of coastal waters. View Full-Text
Keywords: benthic nutrient fluxes; early diagenesis; South China Sea; filtration capacity; storm impact; sediment core incubation; mangroves benthic nutrient fluxes; early diagenesis; South China Sea; filtration capacity; storm impact; sediment core incubation; mangroves
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Kaiser, D.; Kowalski, N.; Böttcher, M.E.; Yan, B.; Unger, D. Benthic Nutrient Fluxes from Mangrove Sediments of an Anthropogenically Impacted Estuary in Southern China. J. Mar. Sci. Eng. 2015, 3, 466-491.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
J. Mar. Sci. Eng. EISSN 2077-1312 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top