scholarly journals Use of vegetative test systems in monitoring of the ecological status of water bodies of the Salgir river

2017 ◽  
Vol 3 ◽  
pp. 17-23
Author(s):  
Ivaniutin N.M. ◽  
Podovalova S.V.
Keyword(s):  
Root System ◽  
System Development ◽  
Ecological Status ◽  
Water Bodies ◽  
Treated Wastewater ◽  
Distilled Water ◽  
Garden Cress ◽  
Short Term Exposure ◽  
Bioassay Technique ◽  
Test Plants

The main objective of researches is the definition of the ecological status of water bodies of the Salgir River using bioassay technique. The main goal is to define the feasibility of using these waters for irrigation. For this purpose the base alignments were chosen on the river, exposed on different intensity of anthropogenic loads, and also the treated wastewater from sewerage facilities of Simferopol. The bioassay technique presented growing seeds of test plants in the studied waters and following comparison of the length of their root system with the same seedlings grown in the distilled water. Garden radish and garden cress seeds were chosen as test plants seeds. The phytotoxicity of the tested waters was shown in inhibition of the root system development of test plants. The root system in contact with the studied waters has been developing more slowly, what proves the presence of harmful substances in testing waters, and shows their toxic effect on the plants developing. The biggest sensitivity to pollutants showed the garden cress, which had the maximal inhibiting effect of roots development of 41.8%, in comparison to the monitoring in distilled water. The experiment showed the prospects of use of test plants, with their short-term exposure with the studied waters, as a reflective criterion for bioassay testing of pollution of the natural and treated sewage waters.

scholarly journals Geospatial assessment of the Mokra Sura river ecological condition using remote sensing and in situ monitoring data

2019 ◽  
Vol 27 (3) ◽  
pp. 422-430
Author(s):  
Mykola М. Kharytonov ◽  
Andriy М. Pugach ◽  
Sergey А. Stankevich ◽  
Anna O. Кozlova
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Surface Water ◽  
River Basin ◽  
Ecological Status ◽  
The State ◽  
Water Bodies ◽  
In Situ Monitoring ◽  
Treated Wastewater

The use of remote sensing methods for environmental monitoring of the surface water quality is proved. Regression relationships are consistent with ground-based measurements at sampling sites in water bodies and are an effective tool for assessing the ecological status of water bodies. The state of the water bodies of the Mokra Sura river basin varies considerably. The best is the water quality in the upper part of the Mokra Sura river, the worst – in the middle and lower parts. The factors of water pollution are discharges of not enough treated wastewater of industrial enterprises of the Kamyans’koy and Dniprovs’koy industrial agglomeration. The purpose of our search included the following tasks: (a) calculation of integrated environmental water quality indices; b) obtaining satellite information, processing of multispectral satellite images of water bodies using appropriate applied software techniques; c) establishment of statistical dependencies between water quality indexes obtained for biotopically space images and data of actual in situ measurements. The results of systematic hydrochemical control of the Mokra Sura river basin from 2007 to 2011 years were initial data in 4 control areas located in the Dnipropetrovsk region: 1 – the Sursko-Litovske village; 2 – the Bratske village; 3 – the Novomykolayvka village; 4 – the Novooleksandryvka village. Environmental assessment of the water quality of the Mokra Sura river within the Dnipropetrovsk region was based on the calculation the integrated environmental index ( IEI ). Priority pollutants in this case are oil products and ions 2−SO 4, 2 + Mg , 2 + Zn , 6 + Cr . Two images with a difference in three years in April 2015 and May 2017 were used to determine the current changes in the land cover of the study area. Geomorphological assessment of the water network of the Morka Sura river was performed using satellite radar interferometry. Multispectral images of Landsat 5/TM (2007-2011) and Sentinel 2B/MSI (2017) satellite systems were used forremote assessment of water bodies in the study area of the Mokra Sura river basin. The multispectral index TCW (Tasseled Cap Wetness) was used to measure the spectral reflection of the aquatic environment along of the Mokra Sura river flow. The main advantage of the studies is a demonstration of remote sensing capabilities to estimate Mokra Sura river ecological status not only in individual sites, but also throughout the flow – from source to mouth. Follow the necessity to use water from the Mokra Sura river for irrigation, the level of soil water erosion can only increase and enhance the negative processes of eutrophication of reservoirs. Long term technogenic pollution requires information about the state of surface water of fishery, drinking and municipal water use facilities as an integral part of the aquatic ecosystem, the habitat of aquatic organisms and as a resource of drinking water supply. Over 80% of the Mokra Sura river basin surface (IEI 4-12) belong to the classes with the assessment of dirty, very and extremely dirty. The results of studies using remote sensing indicate the need to reduce the streams of not enough treated wastewater to the the Mokra Sura river. The obtained data can be used for ecological assessment of the current and retrospective state of water bodies, development of forecasts of rivers pollution.

scholarly journals Assessment of the Impact of Small Hydropower Plants on the Ecological Status Indicators of Water Bodies: A Case Study in Lithuania

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 433
Author(s):  
Laima Česonienė ◽  
Midona Dapkienė ◽  
Petras Punys
Keyword(s):  
Water Quality ◽  
Benthic Macroinvertebrates ◽  
Suspended Solids ◽  
Ecological Status ◽  
Fish Abundance ◽  
Water Bodies ◽  
Small Hydropower ◽  
Hydropower Plants ◽  
Physico Chemical ◽  
The Impact

Hydropower plants produce renewable and sustainable energy but affect the river’s physico-chemical characteristics and change the abundance and composition of the aquatic organisms. The impact of large HPPs on the ecological conditions of surface water bodies have been extensively studied, but less attention has been paid to environmental impact studies of small hydropower plants (SHPs). The impact of hydropeaking on both the river flow regime and ecosystems has been well-studied for peaking mode plants, mainly medium to large-sized ones. However, for small hydroelectric power plants, and especially for those in lowland rivers, the available information on water quality, benthic macroinvertebrates communities and fish abundance, and biomass is not sufficient. Ten small hydropower plants were selected, and the ecological status of water bodies was assessed in different parts of Lithuania. The studies were performed at the riverbed upstream from the SHPs, where the hydrological regime has not changed, and downstream from the SHPs. It was found that the small hydropower plants do not affect the physico-chemical values of the water quality indicators. This study demonstrated that the total number of benthic macroinvertebrates taxa (TS) is influenced by the concentration of nitrogen and suspended solids, the water flow, the river area, and the current speed; the number of EPT (Ephemeroptera (mayflies), Plecoptera (stoneflies), and Trichoptera (caddisflies)) taxa is influenced by the concentration of nitrogen and suspended solids. The studied indicators do not have a significant impact on biomass. The SHPs affect the fish abundance and biomass. The Lithuanian fish index (LFI) is influenced by the average depth and area of the river. Some SHPs operating in lowland areas may yield somewhat significant hydrograph ramping but more detailed investigation is needed to support the significance of this impact on the biological indices.

scholarly journals Influence of Anthropogenic Loads on Surface Water Status: A Case Study in Lithuania

2021 ◽  
Vol 13 (8) ◽  
pp. 4341
Author(s):  
Laima Česonienė ◽  
Daiva Šileikienė ◽  
Vitas Marozas ◽  
Laura Čiteikė
Keyword(s):  
Total Nitrogen ◽  
Water Status ◽  
Arable Land ◽  
Ecological Status ◽  
Water Bodies ◽  
Agricultural Pollution ◽  
Good Ecological Status ◽  
Water Catchment ◽  
Lake Basins

Twenty-six water bodies and 10 ponds were selected for this research. Anthropogenic loads were assessed according to pollution sources in individual water catchment basins. It was determined that 50% of the tested water bodies had Ntotal values that did not correspond to the good and very good ecological status classes, and 20% of the tested water bodies had Ptotal values that did not correspond to the good and very good ecological status classes. The lake basins and ponds received the largest amounts of pollution from agricultural sources with total nitrogen at 1554.13 t/year and phosphorus at 1.94 t/year, and from meadows and pastures with total nitrogen at 9.50 t/year and phosphorus at 0.20 t/year. The highest annual load of total nitrogen for lake basins on average per year was from agricultural pollution from arable land (98.85%), and the highest total phosphorus load was also from agricultural pollution from arable land (60%).

scholarly journals Reply: Potential discharge, attenuation and exposure risk of SARS-CoV-2 in natural water bodies receiving treated wastewater

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Manish Kumar ◽  
Md Alamin ◽  
Keisuke Kuroda ◽  
Kiran Dhangar ◽  
Akihiko Hata ◽  
...  
Keyword(s):  
Natural Water ◽  
Water Bodies ◽  
Treated Wastewater ◽  
Exposure Risk ◽  
Natural Water Bodies

scholarly journals Timecourse Changes in Two Different Topological Indices with Seminal Root System Development of Rice.

1996 ◽  
Vol 65 (2) ◽  
pp. 303-308 ◽  
Author(s):  
Yasuhiro IZUMI ◽  
Yasuhiro KONO ◽  
Akira YAMAUCHI ◽  
Morio IIJIMA
Keyword(s):  
Root System ◽  
System Development ◽  
Topological Indices ◽  
Seminal Root ◽  
Root System Development

The Effect of Salinity on Root Architecture in Forage Pea (Pisum sativum ssp. arvense L.)

2021 ◽  
Author(s):  
S. Acikbas ◽  
M.A. Ozyazici ◽  
H. Bektas
Keyword(s):  
Root System ◽  
Root Architecture ◽  
System Development ◽  
Shoot Biomass ◽  
Growth And Survival ◽  
Legume Crop ◽  
Root System Development ◽  
Randomized Design ◽  
Salinity Levels ◽  
Root And Shoot Biomass

Background: Plants face different abiotic stresses such as salinity that affect their normal development, growth and survival. Forage pea is an important legume crop for herbage production in ruminants. Its agronomy requires high levels of irrigation and fertilization. This study aimed to evaluate the effect of salinity on seedling root system development in forage pea under semi-hydroponics conditions.Methods: Different treatment of NaCl doses (0, 50, 100, 150, 200, 250 and 300 mM) on root architecture was investigated in two different forage pea cultivars (Livioletta and Ulubatlý) with contrasting root structures under controlled conditions. The experimental design was completely randomized design with three replications and nine plants per replication.Result: Salinity affects root and shoot development differently on these cultivars. Despite the salinity, Livioletta produced more shoot (0.71 g) and root biomass (0.30 g) compared to Ulubatlý (0.52 g and 0.25 g for Root and Shoot biomass, respectively) at 150 mM and all other salinity levels. Livioletta developed a better root system and tolerated salt to a higher dose than Ulubatlý. Understanding root system responses of forage pea cultivars may allow breeding and selecting salinity tolerant cultivars with better rooting potential.

Growth and development of Hippophae rhamnoides L. introduced in Absheron

2020 ◽  
Vol 02 (03) ◽  
pp. 35-38
Author(s):  
Kamala Arastun Sadigov ◽  
Keyword(s):  
Root System ◽  
System Development ◽  
Growth Dynamics ◽  
Climatic Conditions ◽  
Hippophae Rhamnoides ◽  
Seedling Morphology ◽  
Hippophaë Rhamnoides ◽  
Root System Development ◽  
Hippophae Rhamnoïdes L ◽  
Seed Propagation

The presented article provides seed propagation, seedling morphology and growth dynamics, root system development in connection with the introduction of Hippophae rhamnoides L. species found in our natural flora in Absheron. The study found that the species Hippophae rhamnoides L. is well adapted to the soil and climatic conditions of Absheron and can be grown in cultural conditions. Key words: Hippophae rhamnoides L., introdiction, seed, repoduction, morphology, dewelopment, root system

scholarly journals Reaction of potential guava rootstocks to Meloidogyne enterolobii

Revista CERES ◽  
2018 ◽  
Vol 65 (3) ◽  
pp. 291-295 ◽  
Author(s):  
Fernando Marcelo Chiamolera ◽  
Antonio Baldo Geraldo Martins ◽  
Pedro Luiz Martins Soares ◽  
Tatiana Pagan Loeiro da Cunha-Chiamolera
Keyword(s):  
Root System ◽  
Fusarium Solani ◽  
Root Rot ◽  
System Development ◽  
Control Treatment ◽  
Root Knot Nematode ◽  
Second Stage ◽  
Root System Development ◽  
Meloidogyne Enterolobii ◽  
Reproduction Factor

ABSTRACT Root-knot nematode Meloidogyne enterolobii is the main phytosanitary problem of guava cultivation in Brazil. Among the strategies to manage the problem, the best prospects are in identifying or developing cultivars or rootstocks that are resistant to this nematode. To identify plants with potential as rootstocks for guava, the reaction of araçá (wild guava) to M. enterolobii was assessed in a greenhouse experiment. Seven araçá species were evaluated (Eugenia stipitata, Psidium acutangulum, P. cattleyanum ‘yellow’, P. friedrichsthalianum, P. guajava var. minor, P. guineense, and Psidium sp.). The plants were inoculated with a suspension of 3,000 eggs of M. enterolobii, using eggplant as control treatment. The parameters fresh root mass, number of eggs and second stage juveniles (J2) per root system, the reproduction factor (RF = Pf/Pi), and araçá reaction were determined during the experiment. RF of the araçá species E. stipitata, P. cattleyanum ‘yellow’, and P. friedrichsthalianum was less than one (RP < 1), therefore resistant to M. enterolobii. The araçá trees had good root system development and the susceptible plants showed many root galls, high number of eggs and J2, and Fusarium solani and Rhizoctonia solani root rot. The araçá species, P. cattleyanum ‘yellow’, P. friedrichsthalianum, and E. stipitata are resistant to M. enterolobii and can be tested as potential guava rootstocks.

scholarly journals Grasping root system development

Root Research ◽  
2013 ◽  
Vol 22 (3) ◽  
pp. 111-118
Author(s):  
Shigenori Morita ◽  
Nobuhito Sekiya ◽  
Jun Abe
Keyword(s):  
Root System ◽  
System Development ◽  
Root System Development
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