scholarly journals Study of the degradation level influence of coastal zones on the water trophicity in lakes Turgoyak and Uvildy, Chelyabinsk region (Russia)

2021 ◽  
Vol 958 (1) ◽  
pp. 012001
Author(s):  
I Mashkova ◽  
A Kostryukova ◽  
S Belov ◽  
V Trofimenko ◽  
S Mashkov
Keyword(s):  
Test Site ◽  
Southern Urals ◽  
Water Area ◽  
Water Bodies ◽  
Trophic State Index ◽  
Coastal Zones ◽  
Water Ecosystem ◽  
Spatial Differences ◽  
State Index ◽  
Chelyabinsk Region

Abstract The man-made impact on hydro-ecological state of water-bodies affects every stage of water ecosystem formation. Such a load has certain patterns of spatial formation distribution of coastal geosystems with different stages of digression as a result of direct recreational impact on hydrological natural monuments Southern Urals - Lake Turgoyak and Lake Uvildy. The current paper researches a degradation level of the coastal zones of the Lakes Turgoyak and Uvildy (Russia). To prepare for measurements and measure recreational load, the methods of trial areas, transect, mathematical-statistical and registration-measuring methods were used. The level of digression at the test site was determined by an integral generalized assessment of fifteen characteristic criteria for anthropogenic transformation of geosystems on a five-point scale. The trophic status of the studied areas of the lakes was determined by the Carlson Trophic State Index (TSI). Determined that, landscape and recreational zones with various degrees of digression were formed around the lakes under the influence of dispersed recreational load. On the territory of camping sites located no further than 30-50 m from the water-bodies, the 4th-5th stage of recreational digression prevails. At a distance of 50-200 m from the lakes, there is a 2-3 stage of digression. At a distance of up to 100-150 m – the 3rd stage, and from 150 m – the 1-2 stage. Within recreation centers, spatial differences in recreational digression are expressed slightly, and geosystems are more often characterized by a 3-5 stage of digression. It is established that the littoral zooplankton is more diversity in those parts of the lake water area where there are optimal conditions for its development, the lowest recreational load and the lowest degree of digression.

Can popular systems of trophic classification be used for small water bodies?

2009 ◽  
Vol 38 (4) ◽  
Author(s):  
Tomasz Joniak ◽  
Barbara Nagengast ◽  
Natalia Kuczyńska-Kippen
Keyword(s):  
Pond Water ◽  
Water Bodies ◽  
Trophic State Index ◽  
Secchi Disc ◽  
Trophic Conditions ◽  
Small Water ◽  
State Index ◽  
Clay Pits ◽  
Physical And Chemical ◽  
Small Water Bodies

Can popular systems of trophic classification be used for small water bodies?The aim of the study was to evaluate the trophic conditions of the waters of twelve small ponds based on the analysis of their physical and chemical parameters according to Carlson's Trophic State Index and OECD. Great differentiation in the trophic status of ponds located in different varieties of landscape was observed and ranged from mesotrophic to weak eutrophic conditions in mid-forest ponds and clay-pits, eutrophic conditions in pastoral ponds, and hypertrophic conditions in urban water bodies. Throughout the analysis, a number of limitations in the classification methods of trophic conditions in the examined water bodies were noted. The specific problems were the shallow depth of ponds, which often corresponded with the depth of the Secchi disc transparency, or the complete overgrowing of the pond water column by macrophytes.

scholarly journals A methodical approach to the ecological status evaluation of water bodies using the complex index of water quality on the example of the Middle Priobye

2019 ◽  
Vol 8 (2) ◽  
pp. 75-80
Author(s):  
Elena Aleksandrovna Shornikova
Keyword(s):  
Water Quality ◽  
Microbial Community ◽  
Ecological Status ◽  
Water Area ◽  
Ecological Condition ◽  
Water Bodies ◽  
Complex Index ◽  
Average Value ◽  
Methodical Approach ◽  
Water Ecosystem

The following paper deals with a methodical approach and experience of water quality complex index ( Iwq ) use for the evaluation of ecological status of surface water bodies by results of rivers monitoring within the Middle Ob basin during 2002-2018. This index allows to use such primary information as results of water chemistry analyses, parameters of structure of microbial community and other available data obtained for each sample site on various water bodies within the basin. The main evaluation criterion for calculating this index is a degree of a deviation of each controlled indicator from average value of this indicator for all explored water area within the basin. Water bodies (or their sites) can be classified to 5 various classes of water quality using the calculated values of the index. Such a methodical approach allows to carry out comparative estimation of an ecological condition of water bodies and their sites within the area, to map the obtained data, to analyze possible reasons of deterioration of water ecosystem state, to manage decisions on their restoration. The paper presents the results of the water quality complex index use for rivers within the Middle Ob basin, calculated on the base of indicators of the chemical composition of water and number of bacteria of various ecological and trophic groups in the structure of microbial community.

scholarly journals Chlorophyll a Concentration Distribution on the Mainland Coast of the Gulf of California, Mexico

2020 ◽  
Vol 12 (8) ◽  
pp. 1335
Author(s):  
Carlos Manuel Robles-Tamayo ◽  
Ricardo García-Morales ◽  
José Eduardo Valdez-Holguín ◽  
Gudelia Figueroa-Preciado ◽  
Hugo Herrera-Cervantes ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Gulf Of California ◽  
Concentration Distribution ◽  
Trophic State Index ◽  
Coastal Zones ◽  
Study Region ◽  
Chl A ◽  
Moderate Resolution ◽  
State Index ◽  
Moderate Resolution Imaging Spectroradiometer

Coastal zones are important areas for the development of diverse ecosystems. The analysis of chlorophyll a (Chl a), as an indicator of primary production in these regions, is crucial for the quantification of phytoplankton biomass, which is considered the main food chain base in the oceans and an indicator of the trophic state index. This variable is greatly important for the analysis of the oceanographic variability, and it is crucial for determining the tendencies of change in these areas with the objective of determining the effects on the ecosystem and the population dynamics of marine resources. In this study, we analysed the Chl a concentration distribution on the mainland coast of the Gulf of California based on the monthly data from July 2002 to July 2019, obtained from remote sensing (Moderate-Resolution Imaging Spectroradiometer Aqua (MODIS-Aqua) with a 9 km resolution). The results showed a clear distribution pattern of Chl a observed along this area with the maximum levels in March and minimum levels in August. A four-region characterisation on this area was used to make a comparison of the Chl a concentrations during warm and cold periods. The majority of the results were statistically significant. The spectral analysis in each of the four regions analysed in this study determined the following variation frequencies: annual, semi-annual, seasonal, and inter-annual; the last was related to the macroscale climatological phenomena El Niño-La Niña affecting the variability of the Chl a concentration in the study region.

Trophic State Index derivation through the remote sensing of Case-2 water bodies in the Mediterranean region

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Christiana Papoutsa ◽  
Evangelos Akylas ◽  
Diofantos Hadjimitsis
Keyword(s):  
Remote Sensing ◽  
Regression Model ◽  
Regression Models ◽  
Mediterranean Region ◽  
Trophic State ◽  
Landsat Tm ◽  
Water Bodies ◽  
Trophic State Index ◽  
State Index ◽  
The Mediterranean

AbstractThe main goal of this study is the derivation of Carlson’s Trophic State Index (TSI) through the remote sensing of four different Case-2 waters in the Mediterranean region such as Cyprus and Greece. TSISD is derived through extensive field ground campaign of Secchi Disk Depth measurements for the Asprokremmos Dam, located in Paphos District in Cyprus; Alyki Salt Lake, located in Larnaca District in Cyprus; and in Karla Lake, located in Volos District in Greece; and finally to three coastal water areas in the Limassol coastal area. Several regression models have been applied in order to develop the best regression model between the TSISD and in-band reflectance values for Landsat TM/ETM derived from spectroradiometric measurements using a GER-1500 field spectroradiometer over the main case study area in Asprokremmos Dam in Cyprus. Finally, we apply several regression models for Asprokremmos Dam for retrieving the suitable Landsat TM/ETM band or band combinations (obtained from field spectroradiometric measurements) in which TSISD can be determined. Indeed, the best regression model has been obtained by correlating ‘TSI Versus Band2/Band3’, with R2=0.89. All field TSISD and in-band reflectance values from the four different water bodies have been used to develop the best fitted model for the established TSI SD Versus Band2/Band3 model. We find that the exponential regression model provides the best fitted equation over the four different water bodies.

scholarly journals Environmental Management of the Inle Lake in Myanmar

2012 ◽  
Vol 11 ◽  
pp. 57-60 ◽  
Author(s):  
Zaw Lwin ◽  
M.P. Sharma
Keyword(s):  
Water Quality ◽  
Open Water ◽  
Management Plan ◽  
Water Area ◽  
Trophic State Index ◽  
Tourist Destinations ◽  
Open Water Area ◽  
Conservation Plan ◽  
State Index ◽  
The Government

The Inle Lake, the second-largest lake in Myanmar, is located in Shan State in Myanmar. More than 170,000 people inhabit the lake and its surroundings, and their main business is agriculture with the fl oating gardens. Due to its picturesque siting and diverse fauna, combined with the unique lifestyles and traditions of human inhabitants, the lake is considered as one of the primary tourist destinations in Myanmar. The Inle is not only designated as the 190th World’s Eco-region but also nominated as one of the fresh water biodiversity hotspots. Since the last decade, the lake has been facing serious threats due to natural and man-made pressure leading to the deterioration of its water quality and shrinkage of the open water area. According to the assessment of its water quality in 2012, the trophic state index of the Inle Lake is found to be in the range of eutrophication.The present paper aims to identify the problems based on data collected from the lake authorities and prepare a management plan for its conservation. The estimated cost is 31.18 million US$ and is expected to improve the lake health signifi cantly, if the conservation plan is implemented by the government in the true sense.DOI: http://dx.doi.org/10.3126/hn.v11i0.7164 Hydro Nepal Vol.11 2011 pp.57-60

Trophic Status of Lake Phewa and Kulekhani Reservoir, Nepal

2021 ◽  
Vol 18 (3) ◽  
pp. 49-57
Author(s):  
Smriti Gurung ◽  
Babi Kumar Kafle ◽  
Bed Mani Dahal ◽  
Milina Sthapit ◽  
Nani Raut ◽  
...  
Keyword(s):  
Trophic State ◽  
Trophic Status ◽  
Secchi Depth ◽  
Sustainable Use ◽  
Water Bodies ◽  
Limiting Factor ◽  
Trophic State Index ◽  
Post Monsoon ◽  
State Index ◽  
Lake Phewa

Eutrophication is one of the growing environmental concerns and is affecting and compromising freshwater bodies across the world making the trophic status assessment of water bodies crucial for their restoration and sustainable use. This paper describes the trophic status of Lake Phewa and Kulekhani Reservoir from Nepal. Sampling was conducted during October 2017 (post-monsoon), April 2018 (Pre-monsoon), July 2018 (Monsoon) and February 2019 (Winter). Trophic State Index (TSI) as given by Carlson (1977) and Trophic State Index Deviation given by Carlson (1991) were estimated to assess trophic status and deviations between the Trophic State Indices. One-way analysis of variance showed significant seasonal variation (p < 0.05) in Secchi depth, total phosphorus (TP), TSI in both the water bodies. Both the water bodies were classified as eutrophic during pre-monsoon and post-monsoon, and hypereutrophic during the monsoon indicating the increased flow of allochthonous inputs from their respective catchments. Non-algal turbidity was found to be the limiting factor for productivity. There is a need for sustainable watershed management in order to reduce the nutrients runoff and accumulation in the water bodies.

APLIKASI CITRA LANDSAT 8 OLI UNTUK IDENTIFIKASI STATUS TROFIK WADUK GAJAH MUNGKUR WONOGIRI, JAWA TENGAH

2017 ◽  
Vol 19 (2) ◽  
pp. 113
Author(s):  
Kusuma Wardani Laksitaningrum ◽  
Wirastuti Widyatmanti
Keyword(s):  
Chlorophyll A ◽  
Total Phosphorus ◽  
Trophic State ◽  
Water Clarity ◽  
Coefficient Of Determination ◽  
Physical Factors ◽  
Landsat 8 ◽  
Trophic State Index ◽  
Landsat 8 Oli ◽  
State Index

<p align="center"><strong>ABSTRAK</strong></p><p class="abstrak">Waduk Gajah Mungkur (WGM) adalah bendungan buatan yang memiliki luas genangan maksimum 8800 ha, terletak di Desa Pokoh Kidul, Kecamatan Wonogiri, Kabupaten Wonogiri. Kondisi perairan WGM dipengaruhi oleh faktor klimatologis, fisik, dan aktivitas manusia yang dapat menyumbang nutrisi sehingga mempengaruhi status trofiknya. Tujuan dari penelitian ini adalah mengkaji kemampuan citra Landsat 8 OLI untuk memperoleh parameter-parameter yang digunakan untuk menilai status trofik, menentukan dan memetakan status trofik yang diperoleh dari citra Landsat 8 OLI, dan mengevaluasi hasil pemetaan dan manfaat citra penginderaan jauh untuk identifikasi status trofik WGM. Identifikasi status trofik dilakukan berdasarkan metode <em>Trophic State Index</em> (TSI) Carlson (1997) menggunakan tiga parameter yaitu kejernihan air, total fosfor, dan klorofil-a. Model yang diperoleh berdasar pada rumus empiris dari hasil uji regresi antara pengukuran di lapangan dan nilai piksel di citra Landsat 8 OLI. Model dipilih berdasarkan nilai koefisien determinasi (R<sup>2</sup>) tertinggi. Hasil penelitian merepresentasikan bahwa nilai R<sup>2</sup> kejernihan air sebesar 0,813, total fosfor sebesar 0,268, dan klorofil-a sebesar 0,584. Apabila nilai R<sup>2 </sup>mendekati 1, maka semakin baik model regresi dapat menjelaskan suatu parameter status trofik. Berdasarkan hasil kalkulasi diperoleh distribusi yang terdiri dari kelas eutrofik ringan, eutrofik sedang, dan eutrofik berat yaitu pada rentang nilai indeks 50,051 – 80,180. Distribusi terbesar adalah eutrofik sedang. Hal tersebut menunjukkan tingkat kesuburan perairan yang tinggi dan dapat membahayakan makhluk hidup lain.</p><p><strong>Kata kunci: </strong>Waduk Gajah Mungkur, citra Landsat 8 OLI, regresi, TSI, status trofik</p><p class="judulABS"><strong>ABSTRACT</strong></p><p class="Abstrakeng">Gajah Mungkur Reservoir is an artificial dam that has a maximum inundated areas of 8800 ha, located in Pokoh Kidul Village, Wonogiri Regency. The reservoir’s water conditions are affected by climatological and physical factors, as well as human activities that can contribute to nutrients that affect its trophic state. This study aimed to assess the Landsat 8 OLI capabilities to obtain parameters that are used to determine its trophic state, identifying and mapping the trophic state based on parameters derived from Landsat 8 OLI, and evaluating the results of the mapping and the benefits of remote sensing imagery for identification of its trophic state. Identification of trophic state is based on Trophic State Index (TSI) Carlson (1997), which uses three parameters there are water clarity, total phosphorus, and chlorophyll-a. The model is based on an empirical formula of regression between measurements in the field and the pixel values in Landsat 8 OLI. Model is selected on the highest value towards coefficient of determination (R<sup>2</sup>). The results represented that R<sup>2</sup> of water clarity is 0.813, total phosphorus is 0.268, and chlorophyll-a is 0.584. If R<sup>2</sup> close to 1, regression model will describe the parameters of the trophic state better. Based on the calculation the distribution consists of mild eutrophic, moderate eutrophic, and heavy eutrophic that has index values from 50.051 to 80.18. The most distribution is moderate eutrophication, and it showed the high level of trophic state and may harm other living beings.</p><p><strong><em>Keywords: </em></strong><em>Gajah Mungkur Reservoir, </em><em>L</em><em>andsat 8 OLI satellite imagery, regression, TSI, trophic state</em></p>

Cultivation of Rapeseed in the Southern Urals and Its Rational Use

2020 ◽  
Vol 67 (1) ◽  
pp. 78-86
Author(s):  
Nikolay S. Sergeev ◽  
Mikhail V. Zapevalov ◽  
Alexander V. Gritsenko
Keyword(s):  
Southern Urals ◽  
Research Purpose ◽  
Partial Replacement ◽  
Biodiesel Fuel ◽  
Forest Steppe ◽  
The Southern Urals ◽  
Rational Use ◽  
Chelyabinsk Region ◽  
Spring Rape

In the continental climate of the southern Urals, rapeseed compares favorably with many forage and traditional silage crops with a high protein content and adaptive properties. The cultivation of rapeseed guarantees the production of its own seeds, up to 40 percent of oil, 60 percent of cake and 98 percent of rapeseed flour. (The research purpose) The research purpose is in improving the efficiency of rapeseed cultivation and rational use of rapeseed seeds, rapeseed flour and oil in the agricultural production in the Chelyabinsk region. (Materials and methods) The influence of various forecrops on the productivity and quality of spring rape seeds in the links of grain-pair crop rotations in the Northern forest-steppe of the Chelyabinsk region were studied. Authors have analyzed the chemical composition of the soil and seeds of spring rape after various forecrops. (Results and discussion) The article proposes to reduce energy costs during pressing and reduce residual oil in the cake after pre-grinding of rapeseed by cutting method using a centrifugal-rotary shredder. The article shows that rapeseed flour has a good flowability and is easily mixed with other feeds. It was found that partial replacement of concentrates with rapeseed flour in the amount of 8-12 percent of the total weight in the diet of lactating cows contributes to an increase in milk productivity by 1.1-1.8 kilograms in terms of milk of 4 percent fat content. (Conclusions) It has been revealed that in order to increase the yield and quality of spring rape seeds, it is necessary to place them on the best forecrops. It was found that when 75 percent of rapeseed oil is mixed with 25 percent of diesel fuel, the obtained biodiesel is not inferior to diesel in terms of energy indicators. The article proves that when cultivating rapeseed for seeds on an area of 100 hectares, it is possible to produce 94.5 tons of biodiesel fuel, 106.0 tons of cake with an oil content of 5 percent and 8.4 tons of oil sludge, the estimated economic effect after sale is of 3,813,325 rubles.

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