Journal ArticleDOI
Tidal flushing of ammonium, iron and manganese from inter-tidal sediment pore waters
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In this paper, ammonium, manganese and iron were examined in sediment pore water and near-bottom water of inter-tidal sediments of Ria Formosa, a coastal lagoon in the South of Portugal, during the short period of time that water flooded the area.About:
This article is published in Marine Chemistry.The article was published on 1997-10-01. It has received 70 citations till now. The article focuses on the topics: Sediment & Surface water.read more
Citations
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Journal ArticleDOI
Assessing sediment contamination in estuaries.
Peter M. Chapman,Feiyue Wang +1 more
TL;DR: There is a clear need to tailor assessment techniques specifically for estuarine environments, for instance, bioavailability models including equilibrium partitioning may have little applicability toEstuarine sediments, appropriate reference comparisons are difficult in biological surveys, and there are too few full-gradient Estuarine sediment toxicity tests available.
Journal ArticleDOI
Geochemistry of iron and manganese in soils and sediments of a mangrove system, Island of Pai Matos (Cananeia — SP, Brazil)
Xosé Luis Otero,Tiago Osório Ferreira,Miguel Angel Huerta-Diaz,Carmen Silvia de Moya Partiti,Valdomiro Severino de Souza,Pablo Vidal-Torrado,Felipe Macías +6 more
TL;DR: In this paper, five zones along a transect of 180m were selected for study on the Island of Pai Matos (Sao Paulo, Brazil) and four of the zones are colonised by vascular plants (Spartina SP, Laguncularia LG, Avicennia AV and Rhizophora RH) and were denominated soils, and the other zone, which lacks vegetation, was denominated sediment (SD).
Book ChapterDOI
Nutrients in Estuaries
Journal ArticleDOI
Seasonal Variation of Zn, Pb, Cu and Cd Concentrations in the Root-Sediment System of Spartina Maritima and Halimione Portulacoides From Tagus Estuary Salt Marshes
TL;DR: It was concluded that H. portulacoides is a more effective accumulator of metals than S. maritima, and both root-sediment systems exhibited a seasonal variation of metal concentrations.
Journal ArticleDOI
Metal-rich concretions on the roots of salt marsh plants: Mechanism and rate of formation
Bjørn Sundby,Carlos Vale,Zsabel Caçador,Fernando Catarino,Maria-João Madureira,Miguel Caetano +5 more
TL;DR: The roots of the vascular plant Spartina maritima, growing in the saltmarshes of the Tagus Estuary, Portugal, are surrounded by tubular concretions whose diameter can reach > 0.2 cm as discussed by the authors.
References
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BookDOI
Methods of seawater analysis
TL;DR: The Automatic Determination of Dissolved Organic Carbon (DOC) by Wet Chemical Oxidation is described in this paper, along with the results of HPLC analysis of photosynthetic pigments.
Journal ArticleDOI
Ferrozine---a new spectrophotometric reagent for iron
TL;DR: The ferroin group has been known to react as bidentate ligands with certain metal ions such as ferrous, cuprous, and cobaltous, to give colored complex species.
Journal ArticleDOI
Early oxidation of organic matter in pelagic sediments of the eastern equatorial Atlantic: suboxic diagenesis
Philip N. Froelich,Gary P. Klinkhammer,Michael L. Bender,Nile A. Luedtke,G.R. Heath,Doug Cullen,Paul Dauphin,Doug Hammond,Blayne Hartman,Val Maynard +9 more
TL;DR: Pore water profiles of total CO 2, pH, PO 3−4, NO − 3 plus NO − 2, SO 2− 4, S 2−, Fe 2+ and Mn 2+ have been obtained in cores from pelagic sediments of the eastern equatorial Atlantic under waters of moderate to high productivity as mentioned in this paper.
Journal ArticleDOI
Dissimilatory Fe(III) and Mn(IV) reduction.
TL;DR: The physiological characteristics of Geobacter species appear to explain why they have consistently been found to be the predominant Fe(III)- and Mn(IV)-reducing microorganisms in a variety of sedimentary environments.
Journal ArticleDOI
Iron and manganese in anaerobic respiration: environmental significance, physiology, and regulation
TL;DR: Field studies of iron and/or manganese reduction suggest that organisms with such metabolic abilities play important roles in coupling the oxidation of organic carbon to metal reduction under anaerobic conditions.