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redox

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Published: 01 July 2011
Figure 2. (A) Depth profiles of redox potential values of long sediment cores from subtidal Bolinao Bay sites characterized by most extensive sulfidic mud surface layers at (site 2) and near fish cages (sites 1,4), and bioturbated sediment without impact of fish farming (site 3); (B) depth More
Image
Published: 01 July 2011
Figure 1. Concentration of proteinaceous compounds vs. redox potential in 0–2 cm surface sediment layers at 14 sites of Bolinao Bay (intertidal to subtidal with maximum depth at 19 m). More
Journal Article
Aquatic Ecosystem Health & Management (2002) 5 (2): 173–189.
Published: 01 June 2002
... supports higher consumption than production of oxygen. Nitrogen is mostly present as ammonium and low concentrations of nitrate; nitrite, and phosphate indicate that eutrophication is not widespread in the area. Sediments are mostly sandy,containing less than 10% organic matter at most stations. The redox...
Journal Article
Aquatic Ecosystem Health & Management (2015) 18 (4): 467–474.
Published: 02 October 2015
... to the overlying water depending on its pH, redox state, various forms of phosphorus present, etc. To examine potential sorption or mobilization of sediment phosphorus in floodplain wetlands, the amount and distribution of phosphorus fractions were evaluated using a sequential chemical extraction...
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2013) 16 (1): 78–87.
Published: 02 January 2013
... from geogenic sources. Typical deviations from this pattern were found for Ce and Eu and could be explained by their redox chemistry. Results of light to heavy REEs (LREE/HREE) ratios suggested REEs fractionation in coastline marine environment produced more light REEs and less heavy REEs absorbed in...
Journal Article
Aquatic Ecosystem Health & Management (2011) 14 (3): 318–324.
Published: 01 July 2011
...Figure 2. (A) Depth profiles of redox potential values of long sediment cores from subtidal Bolinao Bay sites characterized by most extensive sulfidic mud surface layers at (site 2) and near fish cages (sites 1,4), and bioturbated sediment without impact of fish farming (site 3); (B) depth...
Journal Article
Aquatic Ecosystem Health & Management (2014) 17 (2): 122–128.
Published: 03 April 2014
... interferes with cell divisions in root tips and lateral roots, increases cell wall rigidity, maintains proper cellular redox state and various other biochemical, physiological and growth responses. Excess concentration of reducible Fe on acidic soils poses constraint primarily on wetland plants. The authors...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (1): 33–40.
Published: 01 March 2007
... the availability of all products and micro-organisms involved. Although different electron acceptors theoretically will be oxidised in a sequence as redox potential decreases, overlapping processes have been observed ( Peters and Conrad, 1996 ). Calmano (1996) emphasized that future research...
Image
Published: 01 December 2006
Figure 5. Positive significant correlation between chemical/physical PC 2 (increasing nitrate-N, sulfate-S, and redox-potential) and macroinvertebrate CA dimension 1 scores. More
Image
Published: 01 December 2006
; T, Typha), and site location number. Chemical/physical parameters include turbidity (Tur), sulfate-S (SO 4 ), nitrate-N (NO 3 ), redox potential (ORP), total alkalinity (Alk), chloride (Cl), chlorophyll a (Chl), pH, percent dissolved oxygen (%DO), and specific conductance (SpC). More
Journal Article
Aquatic Ecosystem Health & Management (2004) 7 (1): 31–41.
Published: 01 January 2004
...., 1993 ; Phillips et al., 1994 ). Although several physical (e.g., wind, bioturbation), chemical (e.g., concentration gradients, pH, redox conditions) and biological (e.g., microbial activity, macrophytes) factors can affect P exchange, by and large research has focused on the traditional model of...
Journal Article
Aquatic Ecosystem Health & Management (2000) 3 (3): 369–378.
Published: 01 January 2000
... that of the parent strains. At low doses, hydrogen peroxide induced distinctly more mutants in the CAT-lacking strains (Fig. 8a). Menadione, producing superoxide anions by an intra- cellular redox cycling mechanism, led to a signifi- cantly higher response of the SOD-lacking strains (Fig. 8b). In both...
Journal Article
Aquatic Ecosystem Health & Management (2005) 8 (3): 313–322.
Published: 01 July 2005
... biogeochemical reactors in which deposited particles carrying nutrients and metals are subject to a variety of natural processes, including microbial reactions, redox transformations, adsorption-desorption exchanges and precipitation-dissolution of minerals ( Cappellen and Wang, 1995 ). In the surface layers of...
Journal Article
Aquatic Ecosystem Health & Management (2015) 18 (4): 414–423.
Published: 02 October 2015
.... Nitrite, because of its intermediate redox position between ammonium and nitrate, is a useful indicator of the equilibrium state of the oxidative and reductive pathways of the marine nitrogen cycle. PNM is generally observed at a depth near the bottom of the euphotic layer or the seasonal thermocline...
Journal Article
Aquatic Ecosystem Health & Management (2020) 23 (4): 474–482.
Published: 01 October 2020
... uncharacteristic values of pH, conductivity and redox potential. Therefore, the use of steel slags, albeit economically recommended, should be adopted under wise monitoring of long-term period. The chemical compositions of steel slags are very complex and depends on different factors, such as source of raw...
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2020) 23 (2): 245–248.
Published: 02 April 2020
... development in the marina and the probable source of metals; and A redox proteomics tool kit has been developed to identify proteins that are targets of direct oxidation both in field-sampled aquatic organisms and in exposure studies facilitating rapid assessments. Session Chairs: Waleed Hamza...
Journal Article
Aquatic Ecosystem Health & Management (2006) 9 (3): 351–356.
Published: 01 September 2006
... the nitrate limiting the amount entering Lake Cataouatche. Denitrification is an anaerobic process, occurring in the sediment. On the other hand, nitrification is an aerobic process that can occur in water column, or at the thin surface oxidized layer at the sediment-water interface where redox...
Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (4): 397–408.
Published: 01 December 2003
... similar cluster (High SRB Cluster-2) com- prised of the TYM-5-4 to -11 layers. These layers are thought to have been the zones of active sulfate- reducing zones at a certain redox potential, for example, below 200 mV at pH 7 (Connell and Patrick, 1968); however, continued sedimentation and diagenic pro...
Journal Article
Aquatic Ecosystem Health & Management (2004) 7 (2): 269–288.
Published: 01 April 2004
... included soluble reactive phosphorus (SRP), nitrate-N, nitrite-N, ammonium-N, turbidity, alkalinity, temperature, dissolved oxygen (DO), chlorophyll a , oxidation-reduction (redox) potential, and specific conductance. Quality assurance/quality control procedures followed protocols recommended by APHA...
Journal Article
Aquatic Ecosystem Health & Management (2006) 9 (4): 463–479.
Published: 01 December 2006
...Figure 5. Positive significant correlation between chemical/physical PC 2 (increasing nitrate-N, sulfate-S, and redox-potential) and macroinvertebrate CA dimension 1 scores. ...