scholarly journals Species diversity of plankton as an indicator of water quality at sewerage disposal of several Industries In Surakarta .

1970 ◽  
Vol 4 (1) ◽  
Author(s):  
WIRYANTO WIRYANTO ◽  
ARI SUSILOWATI ◽  
AHMAD DWI SETYAWAN
Keyword(s):  
Water Quality ◽  
Species Diversity ◽  
Diversity Indices ◽  
Temperature Data ◽  
Total Soluble Solid ◽  
Sediment Chemistry ◽  
Water And Sediment ◽  
Soluble Solid ◽  
Aeration Process ◽  
Plankton Diversity

The objective sof the research were to study the physical, chemist and biological (plankton) conditions of sewerage disposal from several lndustries In Surakarta, Physical parametert observed were temperature, total soluble solid and the texture of soli sediment, chemistry parameters observed were, includll"l,g,DO, pH and EC, while blotlo parameters observed were density and diversity of plankton, The research was elane, betvleen July and September 2002 at sewerage disposal of ten Industries InS urakarta. Sample collected at 0, 100 16I'1Q 200m irespectlvely from the waste reseuree, Temperature data measured for both water and sediment resulted ,that the average, temper'ature of ten industries was >26°0, with certain Industry clearly dissolved Its high temperatur,e wU,QIi1 its uwer:ag;e., The iSS varies betvleen Industries, depend on the speclfloatlon of the Industry, pH detegteGw,as '1>1, :an;'ct tile 00, data. mee_suredwere relatively high due to aeration process. Based on the plankton diversity indices :aUwater !se;weysg,e, from tlhe ten Industries were oategorlzed as heavy polluted,@ 2003 Jurusan 9101091 FMIPA UNS SurakartaKata kuncl: sewerage, plankton, Surakarta

Effects of Ecological Spur Dikes on Spring Phytoplankton in Wangyu River

2013 ◽  
Vol 664 ◽  
pp. 81-86 ◽  
Author(s):  
Pei Fang Wang ◽  
Jing Huang ◽  
Chao Wang ◽  
Xiao Yu Ai ◽  
Jin Qian ◽  
...  
Keyword(s):  
Water Quality ◽  
Taihu Lake ◽  
Diversity Indices ◽  
Water Diversion ◽  
Phytoplankton Diversity ◽  
Water Diversion Project ◽  
Improve Water Quality ◽  
Spur Dikes ◽  
Plankton Diversity

In order to study the effects of the newly-built ecological spur dikes on spring phytoplankton in Wangyu River, a riverway of water diversion project from Yangtze River to Taihu Lake, triple samplings were carried out in eleven sites from the near and upper water around the ecological spur dikes in April and May, 2011. The samples were collected to investigate the species and density of phytoplankton. Meanwhile, some environmental factors, such as temperature, pH, total nitrogen (TN), total phosphorus (TP) were determined. Indices of Simpson (D), Shannon-Wiener (H), Pielou (J) and Margalef (Dm) were used to analyze the change regulations of phytoplankton diversity. H, J, Dm were also used to evaluated the water quality, and they were 2.873, 0.532, 3.037. The results indicated that the composition of phytoplankton species was similar to the typical character of large or medium rivers. Based on the diversity indices, higher biological plankton diversity and better water quality emerged near the dikes. Results of this research supplied a theory for building ecological spur dikes to improve water quality of large or medium rivers and also provided a basis of using phytoplankton to monitor changes of water quality.

scholarly journals Influence of Thermal Pollution from Beloyarka Nuclear Power Plant on Zooplankton and Zoobentos Community of the Beloyarka Reservoir.

2016 ◽  
pp. 90
Author(s):  
Keyword(s):  
Water Quality ◽  
Power Plant ◽  
Species Diversity ◽  
Nuclear Power Plant ◽  
Water Body ◽  
Nuclear Power ◽  
Diversity Indices ◽  
Polluted Water ◽  
Biological Research ◽  
Species Diversity Indices

Results of hydro/biological research in the Beloyarka nuclear power plant cooling reservoir conducted to determine peculiar features of the water body zooplankton and zoobenthos development under the nuclear power plant impact are presented. On the basis of the researches conducted some general trends of the Beloyarka Reservoir zoobenthos communities structure changes in the Beloyarka NPP impact zone were disclosed. The most significant changes in the bottom-located communities were detected in the zone directly adjacent to the BN-600 outlet where the worst water quality was detected, reduction of the zoobenthos and periphyton total abundance, biomass and species number, as well as the least species diversity indices. Saprobity indices corresponded to polluted water. Water quality indicators’ array calculated by the hydrocoles indicators characterized the Beloyarka Reservoir as a water body of the euthrophic type, as for the saprobity degree, it was characterized as a β-mezosaprobic water body being transferred into the α-mezasaprobic zone. The worst water quality and low species diversity indices were registered in the area close to the heated waters discharge point.

Sewers and the Quality of Canals and Ditches in Amsterdam

1993 ◽  
Vol 27 (5-6) ◽  
pp. 61-67 ◽  
Author(s):  
E. Jacobs ◽  
J. W. van Sluis
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Sediment Quality ◽  
Water System ◽  
Water Systems ◽  
Sewer System ◽  
Water And Sediment ◽  
Combined Sewer ◽  
Water And Sediment Quality

The surface water system of Amsterdam is very complicated. Of two characteristic types of water systems the influences on water and sediment quality are investigated. The importance of the sewer output to the total loads is different for both water systems. In a polder the load from the sewers is much more important than in the canal basin. Measures to reduce the emission from the sewers are much more effective in a polder. The effect of these measures on sediment quality is more than the effect on water quality. Some differences between a combined sewer system and a separate sewer system can be found in sediment quality.

Role of Phospholipase D Inhibitor in Regulating Expression of Senescencerelated Phospholipase D gene in Postharvest Longan Fruit

2019 ◽  
Vol 14 (7) ◽  
pp. 649-657 ◽  
Author(s):  
Li Li ◽  
Jiemin Li ◽  
Jian Sun ◽  
Ping Yi ◽  
Changbao Li ◽  
...  
Keyword(s):  
Phospholipase D ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Significant Inhibition ◽  
Solid Content ◽  
Total Soluble Solid ◽  
Total Phenolic ◽  
Soluble Solid Content ◽  
Soluble Solid ◽  
Pericarp Browning

Background: Phospholipase D (PLD)is closely related to browning and senescence of postharvest longan fruit. Objective: This study investigated the effects of 2-butanol (a PLD inhibitor) on the expression and regulation of PLD during storage of longan fruit at a low temperature. Methods: Senescence-related quality indices showed that the 2-butanol-treated fruit presented lower pericarp browning index, pulp breakdown index and total soluble solid value than the untreated fruit. Results: The fruit treated by 60 µL/L 2-butanol exhibited the strongest inhibition on senescence, which significantly delayed changes in weight, titratable acidity content, total soluble solid content and ascorbic acid content. This treatment maintained a high level of total phenolic content and caused significant inhibition on pericarp browning and pulp breakdown. Through ELISA method, 60 µL/L 2-butanol treatment also reduced PLD activity. Real-time RT-PCR (RT-qPCR) results showed that PLD mRNA expression level was inhibited by 60 µL/L 2-butanol within 15 days. Western-blotting results further confirmed the differential expression of PLD during storage, and a relatively higher expression for PLD protein was found in control compared to the 2-butanoltreated fruit during 15-d storage. Conclusion: These results provided a scientific basis and reference to further investigating postharvest longan quality maintenance by regulating the PLD gene expression.

scholarly journals Relationship between Fruit Total Soluble Solid Contents and Tree Nitrogen and Potassium Contents in ‘Shimizu-Hakuto’ Peach

2007 ◽  
Vol 6 (4) ◽  
pp. 515-519 ◽  
Author(s):  
Kazuo Takano ◽  
Tsuyoshi Kimura ◽  
Shogo Yamamoto ◽  
Shinichi Moritsugu ◽  
Goro Okamoto
Keyword(s):  
Total Soluble Solid ◽  
Soluble Solid

Diversity and community structure of Ephemeroptera in freshwater stream of Megamalai hills, Tamil Nadu, India

ENTOMON ◽  
2021 ◽  
Vol 46 (4) ◽  
pp. 279-284
Author(s):  
S. Barathy ◽  
T. Sivaruban ◽  
Srinivasan Pandiarajan ◽  
Isack Rajasekaran ◽  
M. Bernath Rosi
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Air Temperature ◽  
Tamil Nadu ◽  
Dominant Species ◽  
Diversity Indices ◽  
Low Diversity ◽  
Freshwater Stream ◽  
Species Diversity Indices ◽  
High Diversity

In the study on the diversity and community structure of Ephemeroptera in the freshwater stream of Chinnasuruli falls on Megamalai hills, a total of 523 specimens belonging to thirteen genera and five families were collected in six month periods. Of the five families, Teloganodidae and Leptophlebiidae exhibited high diversity and Caenidae showed low diversity. Choroterpes alagarensis (Leptophlebiidae) is the most dominant species. Diversity indices such as Shannon and Simpson indices showed that diversity was maximum in November and December and it was minimum in August and January. Canonical Correspondence Analysis revealed that rainfall, water flow, turbidity, and air temperature were the major stressors in affecting the Ephemeropteran community structure.

Taking the pulse of Mother Ganga - Revealing the visible and invisible water pollution crisis along the Ganges River

2021 ◽  
Author(s):  
Stefan Krause ◽  
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Land Use ◽  
Surface Water ◽  
River Network ◽  
Ganges River ◽  
Sediment Samples ◽  
Water And Sediment ◽  
The Ganges ◽  
Water And Sediment Samples

<p>It is probably hard to overestimate the significance of the River Ganges for its spiritual, cultural and religious importance. As the worlds’ most populated river basin and a major water resource for the 400 million people inhabiting its catchment, the Ganges represents one of the most complex and stressed river systems globally. This makes the understanding and management of its water quality an act of humanitarian and geopolitical relevance. Water quality along the Ganges is critically impacted by multiple stressors, including agricultural, industrial and domestic pollution inputs, a lack and failure of water and sanitation infrastructure, increasing water demands in areas of intense population growth and migration, as well as the severe implications of land use and climate change. Some aspects of water pollution are readily visualised as the river network evolves, whilst others contribute to an invisible water crisis (Worldbank, 2019) that affects the life and health of hundreds of millions of people.</p><p>We report the findings of a large collaborative study to monitor the evolution of water pollution along the 2500 km length of the Ganges river and its major tributaries that was carried out over a six-week period in Nov/Dec 2019 by three teams of more than 30 international researchers from 10 institutions. Surface water and sediment were sampled from more than 80 locations along the river and analysed for organic contaminants, nutrients, metals, pathogen indicators, microbial activity and diversity as well as microplastics, integrating in-situ fluorescence and UV absorbance optical sensor technologies with laboratory sample preparation and analyses. Water and sediment samples were analysed to identify the co-existence of pollution hotspots, quantify their spatial footprint and identify potential source areas, dilution, connectivity and thus, derive understanding of the interactions between proximal and distal of sources solute and particulate pollutants.</p><p>Our results reveal the co-existence of distinct pollution hotspots for several contaminants that can be linked to population density and land use in the proximity of sampling sites as well as the contributing catchment area. While some pollution hotspots were characterised by increased concentrations of most contaminant groups, several hotspots of specific pollutants (e.g., microplastics) were identified that could be linked to specific cultural and religious activities. Interestingly, the downstream footprint of specific pollution hotspots from contamination sources along the main stem of the Ganges or through major tributaries varied between contaminants, with generally no significant downstream accumulation emerging in water pollution levels, bearing significant implications for the spatial reach and legacy of pollution hotspots. Furthermore, the comparison of the downstream evolution of multi-pollution profiles between surface water and sediment samples support interpretations of the role of in-stream fate and transport processes in comparison to patterns of pollution source zone activations across the channel. In reporting the development of this multi-dimensional pollution dataset, we intend to stimulate a discussion on the usefulness of large river network surveys to better understand the relative contributions, footprints and impacts of variable pollution sources and how this information can be used for integrated approaches in water resources and pollution management.</p>

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