Uncertainty and sediment quality assessments: I. Confidence limits for the triad

1992 ◽  
Vol 11 (5) ◽  
pp. 637-644 ◽  
Author(s):  
Raymond W. Alden
Keyword(s):  
Sediment Quality ◽  
Confidence Limits ◽  
Quality Assessments

A Critical Comparison of Different Approaches to Sediment-Quality Assessments in the Santos Estuarine System in Brazil

2014 ◽  
Vol 68 (1) ◽  
pp. 132-147 ◽  
Author(s):  
Ronaldo J. Torres ◽  
Augusto Cesar ◽  
Victor A. Pastor ◽  
Camilo D. S. Pereira ◽  
Rodrigo B. Choueri ◽  
...  
Keyword(s):  
Sediment Quality ◽  
Estuarine System ◽  
Critical Comparison ◽  
Quality Assessments

Benthos Sediment Quality Assessments

2007 ◽  
pp. 215-261 ◽  
Author(s):  
T.A. DelValls ◽  
P.M. Chapman ◽  
P. Drake ◽  
M. Dulce Subida ◽  
C. Vale ◽  
...  
Keyword(s):  
Sediment Quality ◽  
Quality Assessments

Surface water quality monitoring, classification, biological assessment and standards

1994 ◽  
Vol 30 (10) ◽  
pp. 1-10 ◽  
Author(s):  
Peter J. Newman ◽  
Stephen C. Nixon ◽  
Yvonne J. Rees
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Sediment Quality ◽  
Surface Water Quality ◽  
Water Quality Monitoring ◽  
Biological Assessment ◽  
Physical Measurements ◽  
Potable Water Supply ◽  
Water And Sediment Quality ◽  
Quality Assessments

Poor surface water quality is still a significant problem in many parts of the world. It can often limit the use of this vital resource and in more extreme cases can harm human and other life. A basic need is to establish the nature, extent and magnitude of the problems. To gain a quantitative picture it is necessary to undertake detailed quality and status assessments. Such assessments establish the scope of environmental impacts and effects, and provide a quantitative baseline against which future quality can be compared and progress monitored. Quality assessments or status reviews would enable the key problems and issues to be defined, and their magnitude and importance quantified. Problems for priority action can then be identified. Once key problems have been identified there are mechanisms to enact improvements and changes. These include the setting of standards and targets for water and sediment quality, quite often for defined actual or potential uses of the waters, such as for example for potable water supply and for fisheries. Compliance with the standards and progression towards the targets has to be assessed generally through appropriate monitoring. Monitoring might include biological as well as chemical and physical measurements of quality, and these might also be expressed as some form of index of quality. Periodic assessments of general quality on a national or international basis are also used to monitor overall progress. Nationally this might entail the use of general classification schemes expressing quality as a combined index or score, or individually for different components of the aquatic system, e.g. chemical, biological, aesthetic, and sediment quality.

scholarly journals Fate and spatial distribution of Pb, Cd, Cu and Zn in the water column and in the surface sediment of Indonesian Estuary (Citarum River Estuary)

2020 ◽  
Vol 148 ◽  
pp. 07007
Author(s):  
Nurul Fahimah ◽  
Katharina Oginawati ◽  
Suharyanto
Keyword(s):  
Spatial Distribution ◽  
Sediment Quality ◽  
River Estuary ◽  
Pollution Level ◽  
Concentration Difference ◽  
Estuary Mouth ◽  
Java Sea ◽  
Zone Division ◽  
Quality Assessments ◽  
Cu And Zn

The Citarum River Estuary is an area where mixing among seawater and freshwater occurs since directly connected with the Java Sea. The different condition in estuary will affect heavy metal concentrations in the dissolved phase and suspended/deposited in sediment phase. In this study, fates and distributions from Pb, Cd, Cu and Zn were analyzed along 2 km from estuary mouth. Samples were analyzed by Flame AAS. The study began with water/sediment quality assessments, and fate and distribution analyses with Adsorption Capacity Indices (ACI), Dissolved Transport Indice (DTI), Koc, Kow, spatial distribution in water (3D) and sediment (2D) using MATLAB, and statistical analysis (ANOVA/Kruskal-Wallis). In conclusion, heavy metals sequence from the highest pollution level in water were: Zn > Pb > Cu > Cd, and in sediment were: Cd > Pb > Zn > Cu. Pb, Cd, Cu, and Zn had a tendency to be in sediment compared to water (ACI = 99.69% – 99.89%; DTI = 0.109% – 0.309%), slightly mobile (log Koc = 3.11 – 3.58), and hydrophobic (log Kow = 3.35 – 3.87). Pb and Cd showed significantly different concentrations in water columns (surface/midst/base) (p<0.05), in contrast to Cu and Zn. Pb, Cd, Cu, and Zn had insignificant concentration difference based on zone division from estuary mouth, both in water and sediment.

scholarly journals The inland water macro-invertebrate occurrences in Flanders, Belgium

ZooKeys ◽  
2018 ◽  
Vol 759 ◽  
pp. 117-136 ◽  
Author(s):  
Rudy Vannevel ◽  
Dimitri Brosens ◽  
Ward De Cooman ◽  
Wim Gabriels ◽  
Frank Lavens ◽  
...  
Keyword(s):  
Water Quality ◽  
Sediment Quality ◽  
Open Data ◽  
Monitoring Network ◽  
Water Quality Monitoring ◽  
Biological Data ◽  
Background Information ◽  
Monitoring Networks ◽  
Spatial Coverage ◽  
Quality Assessments

The Flanders Environment Agency (VMM) has been performing biological water quality assessments on inland waters in Flanders (Belgium) since 1989 and sediment quality assessments since 2000. The water quality monitoring network is a combined physico-chemical and biological network, the biological component focusing on macro-invertebrates. The sediment monitoring programme produces biological data to assess the sediment quality. Both monitoring programmes aim to provide index values, applying a similar conceptual methodology based on the presence of macro-invertebrates. The biological data obtained from both monitoring networks are consolidated in the VMM macro-invertebrates database and include identifications at family and genus level of the freshwater phyla Coelenterata, Platyhelminthes, Annelida, Mollusca, and Arthropoda. This paper discusses the content of this database, and the dataset published thereof: 282,309 records of 210 observed taxa from 4,140 monitoring sites located on 657 different water bodies, collected during 22,663 events. This paper provides some background information on the methodology, temporal and spatial coverage, and taxonomy, and describes the content of the dataset. The data are distributed as open data under the Creative Commons CC-BY license.

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