scholarly journals Benthic invertebrates and quality of streambed sediments in the White River and selected tributaries in and near Indianapolis, Indiana, 1994-96

2000 ◽  
Keyword(s):  
Benthic Invertebrates ◽  
White River ◽  
Streambed Sediments

scholarly journals The Use of Biological Indices for the Assessment of the River Quality (Ruda River, Poland)

2017 ◽  
Vol 24 (2) ◽  
pp. 285-298 ◽  
Author(s):  
Aneta Spyra ◽  
Justyna Kubicka ◽  
Małgorzata Strzelec
Keyword(s):  
Water Quality ◽  
Benthic Invertebrates ◽  
Ecological Status ◽  
Field Studies ◽  
Human Pressure ◽  
Dam Reservoir ◽  
River Quality ◽  
Water Field ◽  
Study Sites

AbstractRecognition of the deteriorating conditions of rivers worldwide has called for increased efforts to improve the ecological quality of impacted river systems. This is particularly important in areas that have suffered from a significant impact of human pressure on the ecological status of water. Field studies were conducted in the Ruda River in an area that had undergone anthropogenic disturbances. The objectives of our survey were to test the biological metrics based on benthic macroinvertebrates at four study sites. Spring and autumn surveys of benthic invertebrates indicated that based on the BMWP and BMWP(PL) indices, water quality was higher in comparison with the value of Multimetric index at all of the sites that were studied. Our results revealed that the water quality was higher at the study sites that are located above the dam reservoir based on both the chemical and biological parameters. This study also indicated that both spring and autumn constitute appropriate periods for carrying out monitoring studies. The values of multimeric index indicated the same water quality (except for site 1) in both sampling periods. Anthropogenic transformations of a riverbed influence the flora and fauna and affect the ecological status of rivers.

scholarly journals Quality of water in the White River and Lake Tapps, Pierce County, Washington, May-December 2010

2012 ◽  
Author(s):  
S.S. Embrey ◽  
R.J. Wagner ◽  
R.L. Huffman ◽  
A. M. Vanderpool-Kimura ◽  
J.R. Foreman
Keyword(s):  
White River ◽  
Quality Of Water

scholarly journals Arsenate Retention by Epipsammic Biofilms Developed on Streambed Sediments: Influence of Phosphate

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
D. M. Prieto ◽  
R. Devesa-Rey ◽  
D. A. Rubinos ◽  
F. Díaz-Fierros ◽  
M. T. Barral
Keyword(s):  
Experimental Data ◽  
Environmental Quality ◽  
Human Activities ◽  
Sediment Samples ◽  
Average Percentage ◽  
Geological Conditions ◽  
Streambed Sediments ◽  
The Impact

Natural geological conditions together with the impact of human activities could produce environmental problems due to high As concentrations. The aim of this study was to assess the role of epipsammic biofilm-sediment systems onto As (V) sorption and to evaluate the effect of the presence of equimolar P concentrations on As retention. A natural biofilm was grown on sediment samples in the laboratory, using river water as nutrient supplier. Sorption experiments with initial As concentrations 0, 5, 25, 50, 100, 250, and 500 μg L−1were performed. The average percentage of As sorbed was78.9±3.5and96.9±6.6% for the sediment and biofilm-sediment systems, respectively. Phosphate decreased by 25% the As sorption capactity in the sediment devoid of biofilm, whereas no significant effect was observed in the systems with biofilm. Freundlich, Sips, and Toth models were the best to describe experimental data. The maximum As sorption capacity of the sediment and biofilm-sediment systems was, respectively, 6.6 and 6.8 μg g−1and 4.5 and 7.8 μg g−1in the presence of P. In conclusion, epipsammic biofilms play an important role in the environmental quality of river systems, increasing As retention by the system, especially in environments where both As and P occur simultaneously.

scholarly journals Methods of sampling benthic invertebrates in lotic habitats: a spatial and temporal evaluation

2019 ◽  
Vol 31 ◽  
Author(s):  
Larissa Lima da Cunha ◽  
Maria Ines Bulgari Alves ◽  
Erika Ramos Ono ◽  
Virginia Sanches Uieda
Keyword(s):  
Benthic Invertebrates ◽  
Aquatic Ecosystems ◽  
Riparian Vegetation ◽  
Benthic Fauna ◽  
Temporal Variations ◽  
Spatial And Temporal Variation ◽  
Definition Of ◽  
Number Of Individuals ◽  
Surber Sampler

Abstract Aim We compared the effectiveness of two sampling devices, the Surber sampler and the D-frame net, commonly used in the analysis of invertebrate fauna structure in biomonitoring programs. These programs use the response of benthic invertebrates to assess changes in aquatic ecosystems because they respond quickly to spatial and temporal variations. However, the lack of consensus on the best method of sampling the fauna may reduce the quality of these studies. Methods We evaluated both devices in four structurally different reaches of streams, two in places with preserved riparian vegetation and two occurring in places with many anthropic disturbances. We repeated the analysis at the dry season of two consecutive years. Results The two samplers were equally effective in analyzing the benthic fauna and sensitive enough to identify spatial and temporal variation in the structure of this fauna, influenced by the presence or absence of riparian vegetation, by the position of the reach with this vegetation (upstream or downstream of the reach without vegetation) and the characteristics of the substrate. Conclusions The analyzed fauna structure was similar for the two samplers, but we consider the use of Surber more advantageous and effective because it collects a smaller number of individuals, reducing the time of processing and identifying in the laboratory, and allows a better definition of the area sampled.

scholarly journals Use of macro invertebrates to assess the quality of Seybouse River (North-East of Algeria)

2020 ◽  
Vol 10 (4) ◽  
pp. 60-66
Author(s):  
B. Affef ◽  
O. Samia ◽  
B. Mohamed
Keyword(s):  
Water Quality ◽  
Electrical Conductivity ◽  
Benthic Invertebrates ◽  
Continuous Monitoring ◽  
Physicochemical Characteristics ◽  
Chemical Parameters ◽  
North East ◽  
Physico Chemical ◽  
Different Depths

This study aimed to evaluate the physicochemical properties of water, to determine the macro-benthic invertebrates of this ecosystem. The money samples of water are taken (November - May) at three stations at different depths, including a very polluted one at downstream of the Wadi. Several physico-chemical parameters were measured (pH, electrical conductivity, turbidity, BOD5 MES, water temperature and salinity). The Bi-monthly sampling of macro invertebrates revealed the existence of 40 taxa, divided into 4 branches (amphibians, molluscs, arthropods, annelids), made up of 2344 identified individuals, and distributed according to the bathymetry, where the majority are Arthropods with 95.38%. The annelids represent 3.71%, collected mainly at the level of the strongly anthropized site C. Therefore, the distribution of the macrobenthic fauna, depends on the physico-chemical parameters, on the geographical position.Maintaining a standard water quality in this aquatic ecosystem requires continuous monitoring of its physicochemical characteristics.

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