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Journal articles on the topic 'Saprobity'

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Published: 4 June 2021
Last updated: 11 February 2022

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1

Sládeček, Vladimír. "Scale of saprobity." SIL Proceedings, 1922-2010 22, no. 4 (March 1985): 2337–41. http://dx.doi.org/10.1080/03680770.1983.11897678.

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2

Suwandana, Achmad Fuad, Pujiono Wahyu Purnomo, and Siti Rudiyanti. "ANALISIS PERBANDINGAN FITOPLANKTON DAN ZOOPLANKTON SERTA TSI (TROPHIC SAPROBIC INDEX) PADA PERAIRAN TAMBAK DI KAMPUNG TAMBAK LOROK SEMARANG." Management of Aquatic Resources Journal (MAQUARES) 7, no. 3 (December 20, 2018): 237–45. http://dx.doi.org/10.14710/marj.v7i3.22547.

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Lokasi Tambak Lorok dekat dengan jalan raya, pemukiman penduduk serta pabrik-pabrik besar sehingga berpotensi menampung bahan pencemarnya. Bahan-bahan pencemar tersebut akan mengganggu keseimbangan organisme di dalam tambak salah satunya adalah plankton. Tujuan dari penelitian ini adalah untuk mengetahui kelimpahan fitoplankton dan zooplankton, mengetahui perbandingan fitoplankton dan zooplankton, dan mengetahui status saprobitas. Penelitian ini menggunakan metode deskriptif yang dilaksanakan pada bulan September 2017 di perairan tambak di Kampung Tambak Lorok Semarang. Sampling dilakukan dengan menggunakan purposive sampling pada 4 stasiun dengan masing-masing stasiun 3 titik. Variabel yang diukur adalah kelimpahan fitoplankton, kelimpahan zooplankton, dan nilai saprobitas. Hasil penelitian menunjukkan kelimpahan fitoplankton berkisar antara 47-154 ind/l dan kelimpahan zooplankton berkisar antara 0-9 ind/l. Perbandingan fitoplankton dan zooplankton berkisar antara 7:1 sampai 47:0. Nilai SI (Saprobik Indeks) berkisar antara 1,28-1,33 dan nilai TSI (Tropik Saprobik Indeks) berkisar antara 1,89-2,50. Berdasarkan nilai SI dan TSI dapat diketahui bahwa kondisi tambak di Kampung Tambak Lorok Semarang termasuk ke dalam perairan Oligosaprobik atau perairan belum tercemar sampai tercemar ringan dan sebagian besar dalam status β-Mesosaprobik atau tercemar ringan sampai sedang. Tambak Lorok Village is located in residential areas-densely populated, not far from highway and large factories which potentially accomodating pollution. They, the pollutants disrupt the balance of organismd in the pond, one of them plankton are going to study is plankton. Purpose of this research is to know the abundance of phytoplankton and zooplankton, the comparison of phytoplankton and zooplankton as well as the status of saprobity. This research was carried out on September 2017 in the pond waters at Tambak Lorok Semarang Village by using descriptive method. Sampling was applied by using purposive at 4 station, each station using 3 point. Measured variables were phytoplankton abundance, zooplankton abundance, and saprobity value. The results showed that phytoplankton abundance ranged between 47-154 ind/l, while zooplankton abundance betweem 0-9 ind/l. Comparison of phytoplankton and zooplankton ranged from 7:1 to 47:0. The SI (Sabrobik Index) value ranged from 1,28-1,33 and the TSI (Tropic Saprobik Index) value ranged from 1,89-2,50. Based on SI dan TSI values mentioned above the condition of ponds in Tambak Lorok Village is classified as Oligosaprobik or uncured waters to minor contaminated and mostly in β-Mesosaprobik status or mild to moderate contamination.
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3

Deksne, Rasma, Margarita Božko, Jekaterina Kuzmina, and Andris Linužs. "Ecological Quality Analysis of the Rezekne River after Zooplankton." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (August 6, 2015): 17. http://dx.doi.org/10.17770/etr2013vol1.802.

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During seasonal studies 2012 (August/October), samples of zooplankton were collected and analyzed according standard method. Chemical quality of the Rezekne River's water investigated. Changes of quantitative and qualitative characteristics, saprobity index, species diversity (Shannon- Wiener index) and Renkonen index were employed for the analysis of zooplankton community structure in the Rezekne River. The Rezekne River saprobity varies from o – saprobity to β – mesosaprobity. The lowest ecological quality was determined in the leg of the Rezekne River in the territory of Rezekne city, which characterises with decrease in the total zooplankton abundance and species diversity according to Shannon - Wiener index, increase of saprobity.
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4

Sládeček, Vladimír. "Conversions on the scale of saprobity." SIL Proceedings, 1922-2010 23, no. 3 (October 1988): 1559–62. http://dx.doi.org/10.1080/03680770.1987.11898062.

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5

Ramanda, Okky Aditya, Bambang Sulardiono, and Churun Ain. "ANALISA KUALITAS PERAIRAN DITINJAU DARI TINGKAT SAPROBITAS DAN KANDUNGAN KLOROFIL DI MUARA SUNGAI BODRI KENDAL." Management of Aquatic Resources Journal (MAQUARES) 6, no. 1 (March 9, 2018): 67–76. http://dx.doi.org/10.14710/marj.v6i1.19812.

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ABSTRAK Penelitian ini bertujuan untuk mengetahui nilai saprobitas perairan (SI dan TSI), kandungan klorofil perairan, dan hubungan antara SI, TSI dengan kualitas perairan. Penelitian dilaksanakan pada bulan Agustus 2016 dengan materi yakni sampel air dari Muara Sungai Bodri dan metode deskriptif serta metode pengambilan sampel yakni Purposive Sampling Method. Sampling dilakukan dengan pengulangan waktu yakni pasang dan surut dengan 3 kali pengulangan dengan 4 Stasiun lokasi sampling. Hasil penelitian didapatkan 65 genera dengan 115 spesies yang didominasi oleh Bacillariophyceae seperti Synedra sp., Skeletonema sp., dan Asterionella sp. Kelimpahan fitoplankton tertinggi terjadi pada Stasiun 1 saat surut sebesar 85184 ind/L yang didominasi oleh Synedra ulna. Dari hasil penelitian didapatkan nilai SI pada kisaran 0.75-1.29 yang menyatakan perairan dalam kondisi β-Mesosaprobik hingga β-Mesosaprobik/Oligosaprobik. Sedangkan, untuk TSI didapatkan nilai 0.99-2.56 yang menyatakan perairan dalam kondisi β-Mesosaprobik hingga Oligosaprobik. Hasil pengukuran kadar klorofil-α menunjukkan bahwa klorofil-α pada wilayah di sekitar muara bernilai rendah. Hubungan antara nilai SI dan TSI dengan kualitas perairan menunjukkan nilai positif dengan keeratan lemah pada saat pasang serta nilai positif dan negatif dengan keeratan kuat pada saat surut. Kata Kunci : Muara Sungai Bodri; Klorofil-α; Indeks Saprobik; Tropik Saprobik Indeks ABSTRACT This study aims to determine the value of water saprobity (SI and TSI), chlorophyl-α content and the context of SI, TSI with water quality such as DO, TSS, Nitrate and chlorophyl-α in Bodri River Estuary. This study was conducted in August 2016. The material used in this study is a sample of water taken from Bodri Estuary. The method used in this study is descriptive method with also sampling method is Purposive Sampling. The sampling location consisted by 4 stasions and it done with repetition time of the high and low tide. The result showed 65 genera with 115 species dominated by Bacillariophyceae such as Synedra sp., Skeletonema sp. and Asterionella sp. The highest phytoplankton abundance occurs in Station 1 at low tide at value 85184 ind/L which dominated by Synedra ulna. SI values in the range 0.75-0.29 which states that the water in β-Mesosaprobic to β-Mesosaprobic/Oligosaprobic conditions. While using TSI, it obtained values at range 0.99-2.56 which it states that the water in β-Mesosaprobic to Oligosaprobic conditions. The results of clorophyl-α measurement showed that the chlorophyl-α in the area around the estuary at a low value. The connection between SI and TSI with water quality has a positive value with weak correlaion at high tide and positive and negative value with strong correlation at low tide. Keywords: Bodri River Estuary; Chlorophyl-α; Saprobic Index; Trophic Saprobic Index
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6

Dulic, Zorka, Vera Mitrovic-Tutundzic, Z. Markovic, and Ivana Zivic. "Monitoring water quality using zooplankton organisms as bioindicators at the Dubica fish farm, Serbia." Archives of Biological Sciences 58, no. 4 (2006): 245–48. http://dx.doi.org/10.2298/abs0604245d.

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The quality of water at the Dubica Fish Farm was evaluated by the saprobiological method using the Pantle-Buck saprobity index, during one carp production cycle in the year 2000. By qualitative and quantitative analysis of the zooplankton community, bioindicator species were selected for evaluation of water quality. During the whole period of research, the saprobity index indicated class II water quality, which is suitable for rearing carp in a semi-intensive system as far as natural food is concerned. There was a general trend of decrease in the saprobity index from the beginning to end of the season, its values ranging from 2.05 do 1.77, and a gradual improvement of water quality towards the end of the season. This is partly a result of natural processes (terminated degradation of introduced organic matter as well as settlement of suspended matter introduced with the supply water) and partly a consequence of the application of ichthyological, agrotechnical, and hydrotechnical measures. .
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7

Zlatkovic, S., D. Sabic, M. Milincic, Jelena Knezevic-Vukcevic, and S. Stankovic. "Geographical and biological analysis of the water quality of Bovan Lake, Serbia." Archives of Biological Sciences 62, no. 4 (2010): 1083–89. http://dx.doi.org/10.2298/abs1004083z.

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In this work we performed a complex geographical analysis of the Bovan Lake basin, Serbia, as well as an analysis of the physical, chemical and biological parameters of water reservoir during a one-year period. The basic sanitary characteristics and physical, chemical and biological parameters, necessary for understanding locality conditions, were studied, and the saprobity index, class of quality, index O/H, degree of saprobity, degree of trophicity and category based on the phosphatase activity index (PAI), were determined. Our results classify the ecosystem as polytrophic. The degree of saprobity is oligosaprobic - beta mesosaprobic, with a catarobic degree in winter, classifying the water as III - IV class of quality. Due to the presence of organic residues, a domination of heterotrophic bacteria in comparison to oligotrophic bacteria is evident. The ability of autopurification is weak. The results indicate the need for continual monitoring of the water quality and environmental protection of Bovan Lake.
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8

Stankovic, S., S. Zlatkovic, D. Sabic, M. Milincic, Snezana Vujadinovic, and Jelena Knezevic-Vukcevic. "Geographical and biological analysis of the water quality of Moravica spring in the Sokobanjska Moravica drainage basin, Serbia." Archives of Biological Sciences 64, no. 1 (2012): 59–64. http://dx.doi.org/10.2298/abs1201059s.

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In this work we performed a geographical analysis of the Moravica spring locality in the Sokobanjska Moravica drainage basin in Serbia, as well as an analysis of the physical, chemical, and biological parameters of the water during a one-year period. The basic sanitary characteristics and physical, chemical, and biological parameters, necessary for understanding locality conditions, were studied, and the saprobity index, class of quality, O/H index, degree of saprobity, degree of trophicity, and category based on the phosphatase activity index (PAI) were determined. Our results point to the need for continual monitoring of the water quality in the spring locality.
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9

Weyand, Michael, Theresia Döppner, and Petra Podraza. "Trophic conditions in rivers and streams – significance for biological quality elements of the European Water Framework Directive." Water Practice and Technology 8, no. 1 (March 1, 2013): 41–46. http://dx.doi.org/10.2166/wpt.2013.006.

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In the past, saprobic and trophic conditions were both used as indicators to assess and monitor the quality of surface water bodies. Now, with the introduction of the European Water Framework Directive (WFD), the focus in the assessment of aquatic systems has shifted towards better integration of biocoenotic parameters, expressed as biological quality elements. With this change, saprobity is still used, at least as partially, in the evaluation of benthic invertebrate fauna. The term ‘trophic status’, however, no longer appears as a separate criterion. It is the aim of this paper to show that all quality components depend to a greater or lesser extent on the water bodies' trophic status, so that this term will maintain its significance as a key influencing factor.
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10

Barinova, Sophia, and Tzion Fahima. "The Development of the a World Database of Freshwater Algae-Indicators." Journal of Environment and Ecology 8, no. 1 (May 15, 2017): 1. http://dx.doi.org/10.5296/jee.v8i1.11228.

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This paper presents results of a database compilation for indicator species from fresh and brackish aquatic habitats. Information about aquatic species ecology was collected from international guides, our own research during the last 40 years, as well as from monographs and electronic resources describing the ecology of diverse taxonomic groups of organisms. Most of the species represented in the database belong to algae and cyanobacteria taxa, but the ecology of some other aquatic organisms, such as higher plants, moss, and bacteria is also documented. Altogether, 8475 algal, cyanobacteria, plants, and other aquatic inhabitants from 36 taxonomical divisions are represented in the database. Ecological information is given according to 12 indication methods for the following parameters: confinement to the substrate, temperature, oxygen, and the mobility of the water mass, preferences to water pH, water salinity, saprobity according to Watanabe, saprobity according to Sládeček, saprobity index (SI) according to Sládeček, trophic states, nutrition types and several others. This comprehensive database is scheduled for publication in a book and can be used by a wide spectrum of ecologists for the purpose of aquatic ecosystem assessment and monitoring of water quality based on bioindication methods.
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11

Karavan, Julia, Tatiana Solovej, and Yuriy Yuschenko. "Determination of anthropogenic impact on the Siret River and its tributaries by the analysis of attached algae / Określenie antropogenicznych oddziaływań na rzekę Siret i jej dopływy poprzez analizę osiadłych glonów." Journal of Water and Land Development 19, no. 1 (December 1, 2013): 53–58. http://dx.doi.org/10.2478/jwld-2013-0016.

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Abstract The article is devoted to the determination of anthropogenic impact on the Siret River and its tributaries (the Sukhyj, the Mikhidra and the Malyj Siret Rivers). The taxons of attached algae were determined in this case. Then they were distributed in the saprobity groups and the correlation of each group was found. It was necessary to identify the stage of ecological regress on each site of the researched basin. The data about the ecological regress can be used as primary information on the aquatic ecosystem state for conducting the further researches. The next step of the investigations was counting of the saprobity index by Pantle and Bukk in Sladechek modification for classification of quality status of water in the researched basin.
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12

Davydov, O. A., and D. P. Larionova. "САНІТАРНО-ГІДРОБІОЛОГІЧНА ХАРАКТЕРИСТИКА ОЗЕРА ВЕРБНЕ ЗА МІКРОФІТОБЕНТОСОМ." Scientific Issue Ternopil Volodymyr Hnatiuk National Pedagogical University. Series: Biology 77, no. 3 (September 24, 2019): 46–51. http://dx.doi.org/10.25128/2078-2357.19.3.6.

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Assessing ecological and sanitary state of aquatic ecosystems, including their trophic and saprobiological status and impact of human factors, is among key objectives in modern hydrobiology. Apart from common hydrobiological methods (identifying species compositions, calculating algae number and biomass etc), there are specific methods for the assessment of aquatic ecosystems. Bioindication, which is based on aquatic organisms’ response to environmental factors, including human factors, is the most important. Microphytobenthos is highly sensitive to changes in natural and human factors. Its bioindication capabilities are widely known, therefore studying them as part of sanitary and hydrobiological characteristics of various water bodies is of great interest. Water basins across the City of Kyiv are under diversified human impact including various factors and effects, which differ in pressure degree. Thus, using microphytobenthos for sanitary and hydrobiological assessment, even within one type of water basins, has certain aspects, which depend on the bottom algal communities’ stability or degree of transformation. It is often caused by trophic and topic competition between microphytobenthos, phytoplankton and higher aquatic plants, as the latter two can inhibit growth of bottom algae. In the view of the above, special attention should be paid to quantitative characteristics of benthonts, which may act as cenose-forming organisms. The paper examines the findings of the studies on microphytobenthos in Verbne Lake, which is affected by negative human factor – contamination by surface and ground flow from Kyiv City area and is intensively used for recreation. The objective is to study the sanitary and hydrobiological characteristics and ecological quality of Verbne Lake according to microphytobenthos’ biondication indices. Benthic algae were sampled with the MB-TE microbenthometer within the littoral zone in triplicate from the total area of 40 cm2. Algae number was calculated on a counting plate in a 0.1 cm3 drop, their biomass was calculated according to geometric similarity method. Trophic and saprobiological values were assessed in accordance with the scale, proven for microphytobenthos. Saprobity index was calculated according to the Pantle-Buck method in Sladecek modification on the grounds of traditional and modern data on saprobity indicator algae. Benthonts, planktonts and periphytonts were distinguished with consideration taken of their association with particular habitats. Ecological classification of water quality was performed on the grounds of saprobity bioindication (saprobity indices) according to microphytobenthos. For microphytobenthos’ structural components their role in species richness, number and biomass were analyzed. Proceeding from the obtained findings, sanitary and hydrobiological characteristics of Verbne Lake were presented according to microphytobenthos. On the whole, the lake can be classified as mesotrophic, β-mesosaprobic water body. Benthonts proved to play an essential part in forming microphytobenthos’ indicatory characteristics. Intensive phytoplankton growth in the water column and its sedimentation upon the lake bottom inhibit development of benthic algal forms. In accordance with the ecological water quality classification based on microphytobenthos saprobity bioindication results (saprobity indices), the water of Verbne Lake relates to Water Quality Class II, Water Quality Category 3. The most unfavorable situation within the lake’s littoral area was registered in summer, which signals that self-purification processes are becoming less intensive and the aquatic ecosystem state is getting worse.
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13

Schroevers, P. J. "The baby and the bath-water. Thoughts about ‘saprobity’." Hydrobiological Bulletin 22, no. 1 (August 1988): 79–80. http://dx.doi.org/10.1007/bf02256787.

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14

Guseva, Tatyana, and Iyri Mazhayskiy. "Biological method in monitoring small rivers of the Oka River basin." E3S Web of Conferences 212 (2020): 01005. http://dx.doi.org/10.1051/e3sconf/202021201005.

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The Oka basin is characterized by serious environmental problems associated with the depletion of water resources. Communities of aquatic organisms are the first to respond to negative changes in the aquatic environment, such communities are used as indicators in biological monitoring. The aim of the work was to assess the ecological state of the small river of the Oka basin by bioindication. The quality of the water in the reservoir was assessed by chemical indicators - biogenic and technogenic elements. The saprobity index of the reservoir was determined by the species diversity of periphyton. The results revealed technogenic and organic pollution of the small river. According to the results of biological monitoring, the value of the saprobity index is 2.85, which corresponds to class 4 of the reservoir quality, and the water is assessed as polluted. Monitoring the degree of pollution of the small river by the biodiversity of the periphyton community allows you to determine the degree of water pollution quickly.
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15

Barinova, Sophia, Eibi Nevo, and Tatiana Bragina. "Ecological assessment of wetland ecosystems of northern Kazakhstan on the basis of hydrochemistry and algal biodiversity." Acta Botanica Croatica 70, no. 2 (January 1, 2011): 215–44. http://dx.doi.org/10.2478/v10184-010-0020-7.

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Ecological assessment of wetland ecosystems of northern Kazakhstan on the basis of hydrochemistry and algal biodiversity We studied diversity of algae and cyanobacteria in the wetlands of protected natural lakes with salinity ranging from 0.19 up to 32.7 in the arid/semiarid regions of Northern Kazakhstan. In plankton and periphyton of 34 lakes, we found 254 species belonging to 113 genera of 8 algal divisions. The diversity in arid regions is represented by widespread species of diatoms, green algae, and cyanobacteria in similar proportions. Alkaliphiles, among the indicators of acidification, and betamesosaprobionts, among the indicators of saprobity, predominated. The indices of saprobity in lakes varied from 1.47 to 2.7, reflecting low-trophic and low anthropogenically disturbed wetlands. Oligohalobes-indifferents are most common. Highly diverse algal communities were found irrespective of various levels of mineralization. As a consequence of aridization, salinity increase suppressed algal diversity. The mineralization was the most important variable defining the diversity levels, irrespective of the type and location of wetland lakes in the arid regions.
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16

Sirotina, Marina Valerievna, Dmitriy Nikolaevich Zontikov, and Igor Georgievich Krinitsyn. "Using Zooplankton Indicators to Assess the Ecological Condition of a Lake." Advanced Materials Research 955-959 (June 2014): 1429–32. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.1429.

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Nowadays zooplankton is widely used as an indicator of ecological conditions of waterbodies. This article shows the result of the research in zooplankton community of Kamenik Lake. Diversity of zooplankton community, species composition, indicating species, quantitative characteristics, trophic status and saprobity are being evaluated. Hydrochemical data is provided and a development forecast is made.
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17

Putri, Cinthya Ruhanto, Ali Djunaedi, and Subagyo Subagyo. "Ekologi Fitoplankton : Ditinjau dari Aspek Komposisi, Kelimpahan, Distribusi, Struktur Komunitas dan Indeks Saprobitas Di Perairan Morosari, Demak." Journal of Marine Research 8, no. 2 (May 1, 2019): 197–203. http://dx.doi.org/10.14710/jmr.v8i2.25103.

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Perairan Morosari yang terletak di Kecamatan Sayung, Kabupaten Demak merupakan tempat terjadinya percampuran antara air darat dan air laut. Disekitar perairan Morosari terdapat pemukiman penduduk, industri wisata dan aktifitas nelayan. Aktivitas masyarakat dan wisatawan tersebut akan menimbulkan perubahan yang mengarah pada peningkatan pencemaran yang berimbas kepada keberadaan fitoplankton. Tujuan dari penelitian ini adalah untuk mengetahui komposisi, kelimpahan, distribusi, struktur komunitas dan indeks saprobitas fitoplankton di perairan Morosari. Metode yang digunakan dalam penelitian ini adalah deskriptif eksploratif dan penentuan lokasi menggunakan metode purposive sampling. Penelitian ini terbagi atas 3 sub-area di 3 area yang berbeda. Pengambilan sampel zooplankton dengan cara aktif dengan menarik planktonet secara horizontal. Hasil penelitian diperoleh 24 genera fitoplankton dari 3 kelas di perairan Morosari. Kelimpahan fitoplankton bervariasi antara 12.556 – 19.108 individu/m3. Distribusi fitoplankton tidak merata dan cenderung mengikuti arah arus. Indeks keanekaragaman menunjukkan nilai 1,70–2,25 yang termasuk dalam kategori sedang. Indeks keseragaman fitoplankton menunjukkan nilai 0,71–0,81 yang termasuk dalam kategori Tinggi. Indeks dominansi di perairan Morosari berkisar antara 0,18–0,29 dan termasuk ke dalam kriteria tidak ada jenis yang mendominasi. Indeks Saprobik menunjukkan nilai 0,6–1,3 yang termasuk dalam kategori β–Mesosaprobik. Morosari waters located in District Sayung, Demak Regency is waters area there is a mixture of land and sea water. Surrounding the Morosari waters there are residential, tourist industry and fishing activities. These activities will be affected changes that lead to increased pollution that affects the presence of phytoplankton. The purpose of this research was to know the composition, abundance, distribution, community structure and saprobity index of phytoplankton in Morosari waters, Sayung Subdistrict, Demak District. This research used deskriptive eksplorative method and determination location used purposive sampling method. The results obtained 24 genera phytoplankton of 3 classes. The abundance of phytoplankton ranges from 12.556-19.108 individu/m3. The distribution of phytoplankton is uneven and tends to follow the current direction. The phytoplankton Diversity Index indicated the values of 1,70–2,25 which were in the medium category. The phytoplankton evenness index indicated a value of 0,71 to 0,81 belonged to the High category. The dominance index in Morosari waters indicated no particular genus dominating with the values of 0,18-0,29. The Saprobik Index indicated the values of 0,6–1,3 which were into the category β –Mesosaprobic.
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18

Bazhenova, O. P. "Phytoplankton structure and water saprobity in the upper and middle Irtysh." Russian Journal of Ecology 38, no. 2 (April 2007): 128–30. http://dx.doi.org/10.1134/s1067413607020117.

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19

Tagliapietra, Davide, Marco Sigovini, and Paolo Magni. "Saprobity: a unified view of benthic succession models for coastal lagoons." Hydrobiologia 686, no. 1 (February 2, 2012): 15–28. http://dx.doi.org/10.1007/s10750-012-1001-8.

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20

Janković, D. V. "Studies on the Contamination Status of the Danube River Basin Waters, Measures of Protection, and Rational Exploitation of the Water Resources." Water Science and Technology 22, no. 5 (May 1, 1990): 45–50. http://dx.doi.org/10.2166/wst.1990.0008.

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The water quality of the surface and ground waters, and the characteristics of the aquatic organism communities of the Yugoslav stretch of the River Danube were investigated. River flow rates were estimated according to recorded water levels and the hydrodynamic and morphological characteristics of certain profiles, and by using a mathematical model which included operation of the Djerdap Hydroelectric Power Station (HEPS). During May 1986, water flow rates were 3200 to 6000 m3/s, and in September they were two, times slower. All physical and chemical parameters were determined using standard Yugoslav and German methods (DEV). Regarding the 14 metals analysed, the water samples were satisfactory, while the contents of metals in the pelitic fraction (i.e., diameter ≤ 2 µm) of the sediments indicated the existence of pollution. The pelitic fraction of the sediments was subjected to trace element analysis by an emission spectrographic technique using germanium as the internal standard. The overall precision was ± 12%. Water ecosystem saprobity was estimated according to Pantle-Buck and Roth-schein. The saprobity ranged from beta to alpha-betamesosaprobity. The contents of trace elements in the water, sediment, and aquatic communities indicated the transfer of pollutants between the various ecosystem compartments.
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21

Sadogurskaya, S. A., T. V. Belich, and S. Ye Sadogurskiy. "Flora of cyanobacteria from rocky supralittoral zone of the Meganom peninsula (The Black Sea)." Bulletin of the State Nikitsky Botanical Gardens, no. 137 (December 31, 2020): 57–66. http://dx.doi.org/10.36305/0513-1634-2020-137-57-66.

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Complete lists of biota are the scientific foundation on which studies of the regional biological diversity are based. Considering the emergence of a new classification scheme of cyanoprokaryotes, there is a need to revise the species composition of Cyanobacteria of various biotopes. The article describes the flora of Cyanobacteria of the Meganom Peninsula (eastern Crimea). Taking into account the latest nomenclature-taxonomic changes, 44 species of Cyanobacteria were listed for the supralittoral zone of the protected area of the peninsula. Species are representatives of 23 genera, 15 families, 5 orders and 2 subclasses. A fifth part of the species list consists of rare and endangered species that need protection. A complex of the leading species of the marine supralittoral zone of the Meganom Peninsula was identified; species, which are indicators of saprobity, were determined, and the algal community saprobity index was calculated (S = 0,9). The supralittoral microalgoflora is characterized by the predominance of attached benthic species and complex of marine and brackish-water forms. The prevalence of cosmopolitans and wide-range boreal-tropical species highlight the azonality of the biotope of the marine rocky supralittoral zone.
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22

Protasov, Alexander, Sophia Barinova, Tatiana Novoselova, and Anzhelika Sylaieva. "The Aquatic Organisms Diversity, Community Structure, and Environmental Conditions." Diversity 11, no. 10 (October 8, 2019): 190. http://dx.doi.org/10.3390/d11100190.

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Two main aspects of the study of diversity can be distinguished: the first is related to the inventory of living organisms, the second is related to the organization of life at the level of biotic communities. Quantitative assessment of diversity is two-components as the richness of elements and their evenness. A model of the ecosystem continuum is proposed. The greatest indicators of diversity should be expected in the middle part of the environmental gradients with temporal stability. Study of producers and consumers in water bodies of Ukraine showed a regular change in their community structure in the gradient of saprobity indices. The decreasing of community diversity estimated by the Shannon index and by species richness was found at both high and low values of the saprobity indices. The fundamental coincidence of the empirical point fields of the Shannon index for the communities of invertebrates and phytoplankton with the field points of the empirical model indicates the universality of the bimodal distribution of diversity indicators in the trophic gradient. It is shown that the estimates by zoobenthos overestimate organic pollution compared with the calculations of the same indicators by phytoplankton.
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23

Mackovík, Leo, Ivo Sukop, Miloš Holzer, and Petr Spurný. "Hydrobiological study of the middle course of the Bečva River." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 58, no. 4 (2010): 159–66. http://dx.doi.org/10.11118/actaun201058040159.

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The present work gives the results of the hydrobiological research of the middle course of the Bečva River in the river section between Valašské Meziříčí and Přerov, carried out in the years 2004 to 2007. Altogether, 65 taxa of macrozoobenthos were determined in the period 2000-2007 in the middle course of the Bečva River : Coelenterata (1 taxon), Oligochaeta (5 taxa), Hirudinea (3 taxa), Gastropoda (4 taxa), Isopoda (1 taxon), Amphipoda (2 taxa), Hydracarina (1? taxon), Ephemeroptera (7 taxa), Plecoptera (1 taxon), Odonata (3 taxa), Heteroptera (1 taxon), Megaloptera (1 taxon), Trichoptera (9 taxa), Coleoptera (3 taxa), Diptera (23 taxa). The number of zoobenthos taxa fell in the period 2004–2007 in comparison to period 2000–2002 from 51 taxa to 40 taxa. The decline of zoobenthos taxa was registered on study localities, as follows : Choryně (from 28 to 23 taxa), Hustopeče (from 27 to 25 taxa), Rybáře (from 35 to 28 taxa), Grymov (from 31 to 25 taxa). Average saprobity index of benthic community of the middle course of the Bečva River was 2.35. Average saprobity indices of monitored localities towards downstream were as follows: Choryně 2.41; Hustopeče 2.25; Rybáře 2.40; Grymov 2.34.
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24

Sadogurskaya, S. A., T. V. Belich, and S. Ye Sadogurskiy. "Flora of cyanobacteria from rocky supralittoral zone of the Meganom peninsula (The Black Sea)." Bulletin of the State Nikitsky Botanical Gardens, no. 137 (December 31, 2020): 57–66. http://dx.doi.org/10.36305/0513-1634-2020-137-57-66.

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Complete lists of biota are the scientific foundation on which studies of the regional biological diversity are based. Considering the emergence of a new classification scheme of cyanoprokaryotes, there is a need to revise the species composition of Cyanobacteria of various biotopes. The article describes the flora of Cyanobacteria of the Meganom Peninsula (eastern Crimea). Taking into account the latest nomenclature-taxonomic changes, 44 species of Cyanobacteria were listed for the supralittoral zone of the protected area of the peninsula. Species are representatives of 23 genera, 15 families, 5 orders and 2 subclasses. A fifth part of the species list consists of rare and endangered species that need protection. A complex of the leading species of the marine supralittoral zone of the Meganom Peninsula was identified; species, which are indicators of saprobity, were determined, and the algal community saprobity index was calculated (S = 0,9). The supralittoral microalgoflora is characterized by the predominance of attached benthic species and complex of marine and brackish-water forms. The prevalence of cosmopolitans and wide-range boreal-tropical species highlight the azonality of the biotope of the marine rocky supralittoral zone.
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25

Vizer, Lyubov Semyonovna, Alexander Mikhailovich Vizer, Iuliia Vital’evna Tsygankova Iuliia Vital’evna Tsygankova, and Andrey Valeryevich Tsapenkov. "Features of the formation of zooplankton of the upper Ob in the conditions of the influence of the megapolis." Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries), no. 8 (July 27, 2021): 21–31. http://dx.doi.org/10.33920/sel-09-2108-02.

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Journal: Рыбоводство и рыбное хозяйство №8 2021, №8, 2021 Based on the data obtained in the study of some hydrobiological sections of the Ob River, located above and below the city. The qualitative and quantitative characteristics of the zooplankton community were considered, and the saprobity index was calculated. The species composition is represented by 34 species from three systematic groups, of which 12 are rotifers (Rotifera), 14 are branchial crustaceans (Cladocera), and 10 are copepods (Copepoda). The highest species diversity was observed above the city — 34 taxa, the lowest below the city — 14. The average number of zooplankton above the city of Novosibirsk is insignificant and reached 761 copies/m³ per year. Most (49%) were copepods (Copepoda). The number of rotifers (Rotifera) was 34% of the total. In the summer, the number of zooplankton was slightly higher than the annual one and amounted to 871 copies/m³. The average annual biomass of zooplankton had low values and was 35.0 mg/m³. The maximum summer values reached 180 mg/m³. In the study area of the Ob River below Novosibirsk, the average number of zooplankton increases to 2,4 thousand copies/m³. The group of oar-footed crustaceans dominated in number, its share reached 91%. The number of branchiform crustaceans was 7%. The average annual zooplankton biomass in the river below the city limits was 99.53 mg/m³. The value of the saprobity index in the area above Novosibirsk was 1.6, which indicates the presence of weak organic contamination and corresponds to beta-mesosaprobic conditions. In the zone below Novosibirsk, the saprobity index was 2.0, which indicates an increase in organic pollution and corresponds to beta-mesosaprobic conditions. An increase in the level of eutrophication contributes to a change in the structure of zooplankton. This is reflected in a significant decrease (2.4 times) in the species diversity of zooplankton and a significant increase in quantitative indicators: abundance — 3.2 times, biomass — 2.8 times.
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26

Franz, A., O. Nowak, and H. Kroiss. "Mödling WWTP – treatment efficiency and relationship to receiving water quality." Water Science and Technology 33, no. 12 (June 1, 1996): 47–55. http://dx.doi.org/10.2166/wst.1996.0300.

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The relationship between water protection of small receiving waters and the reliability of treatment efficiency is represented by a 100,000 PE plant. On the basis of stringent emission and immission standards a concept for a one-stage activated sludge plant was developed that meets the current demands on removal efficiency and limit values in Austria with a high degree of reliability. Classic saprobiological analysis of the receiving creek showed saprobic class II. The operation of the treatment plant has been tested in a period of more than two years under normal operational conditions. In this period several modes of operation were investigated and the concept has proved to be successful. A comprehensive data base has been worked up for process comparison and design evaluation. Relevant effluent parameters of a filtration unit in pilot scale are also given. Mass balances for a validation of the data and statistical characterisation of treatment efficiency combined with saprobiological characterisation of the receiving river has proved the applicability to similar cases. These investigations may serve as an example of how to relate treatment efficiency to saprobity of small receiving rivers.
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27

Matavulj, M., M. Bokorov, S. Gajin, M. Gantar, S. Stojilković, and K. P. Flint. "Phosphatase Activity of Water as a Monitoring Parameter." Water Science and Technology 22, no. 5 (May 1, 1990): 63–68. http://dx.doi.org/10.2166/wst.1990.0011.

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The biological monitoring of water saprobity and trophic degree primarily involves the study of qualitative and quantitative composition of organisms present in the water. Although relatively satisfactory as an indicator of the water's organic load, the counting of bacteria is often an unreliable parameter. Due to their polyenzymatic nature, which enables flexible adaptation to new and different physico-chemical conditions of their habitats, microorganisms respond quickly to trophic degree change, but faster by changing the level of their enzyme activity, than by changing the number of cells. On the basis of these findings, the enzyme activity of microbialaquatic biotopepopulations is suggested in recent literature as an additional indicator of the degree of organic load in the water. The results obtained by investigation of the phosphatase activity in samples from natural and artificial water accumulations and flowing waters in Vojvodina Province, having different eutrophic degree, suggest the measurement of the level of water enzyme activity as an additional biochemical indicator of saprobity degree. At the same time, on the basis of long--term measurement of the water phosphatase activity, compared to classical categorizations based on qualitative and quantitative composition of organisms present in the water, classification of surface freshwater s into quality categories according to the level of enzyme (phosphatase) activity of water is proposed.
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28

Kuchko, Yaroslav Aleksandrovich, Nikolay Viktorovich Ilmast, and Tamara Yuryevna Kuchko. "Hydrobiocenoses of lake Tulos, Southwestern Karelia." Samara Journal of Science 8, no. 1 (February 28, 2019): 54–58. http://dx.doi.org/10.17816/snv201981108.

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The following paper assesses the current state of the phyto- and zooplankton and benthic communities of Lake Tulos, which geographically is a part of the Green Belt of Fennoscandia. The lake is located on the territory of the planned National Park Tulos. The species diversity, the ratio of major taxonomic groups and the structure, abundance and biomass of predominant aquatic organism species in the littoral and pelagic zones of the lake were studied. According to the obtained results (the level of quantitative development and the ratio of phytoplankton species during the growing season 2018) the waters of Lake Tulos can be assigned to the third quality class, grade 3a (fairly clean), which corresponds to the -mesosaprobic zone by the saprobity scale. According to Pantle-Bukk saprobity index calculated on the basis of zooplankton, the lakes water can be attributed to oligosaprobic - the 2nd class of quality, pure natural waters. Indices of abundance of macrozoobenthos correspond to the oligotrophic class, according to the ratio of its main groups, the lake belongs to the chironomid type of lakes. The reservoir has a high recreational potential, according to the ichthyofauna composition it belongs to the water bodies of the first fishery category. Lake Tulos is a reference water body convenient for environmental monitoring in near-border areas.
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29

Stenina, Angelina S., and Elena N. Patova. "Diatoms in monitoring of the Vychegda River under the influence of pulp-paper mill (Russia)." Issues of modern algology (Вопросы современной альгологии), no. 2(20) (2019): 101–4. http://dx.doi.org/10.33624/2311-0147-2019-2(20)-101-104.

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The influence of the pulp-paper mill on the development of phytoplankton river communities in the wastewater discharge zones was studied. For the analysis, an indicator group of diatoms was used with data on species richness and structural diversity. The basis of the dominant complexes of the studied sections of the river were mainly species of the genus Aulacoseira. Saprobity indices vary by stations within 1.77–2.06, which corresponds to III class of water quality.
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30

Razumovsky, Lev V. "Reliability estimation of reconstructions on the basis of bioindication methods unification (diatom analysis)." Issues of modern algology (Вопросы современной альгологии), no. 2(20) (2019): 74–78. http://dx.doi.org/10.33624/2311-0147-2019-2(20)-74-78.

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The work is devoted to the unification of bioindication techniques based on diatom analysis. A new method for calculating the numerical values of pH and temperature in time was proposed. The calculation of the saprobity index (S) is used as a methodological principle of unification. Approbation of the method was carried out for lakes from different landscape and climatic zones of the European part of Russia and the results of paleoreconstructions were found to be reliable and informative.
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31

KAREVA, E. S., and A. R. BIKKININ. "INFLUENCE OF WASTEWATERS OF MUNICIPAL BIOLOGICAL WATER TREATMENT PLANTS ON THE CONDITION OF BENTHIC CENOSES IN THE BELAYA RIVER." Urban construction and architecture 1, no. 1 (February 15, 2011): 67–70. http://dx.doi.org/10.17673/vestnik.2011.01.14.

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The article reports on the results of the study of the Belaya rivers ecological condition in the area of wastewater ejection from the biofeedback in Ufa by analyzing the condition of benthic animals community. The degradation of benthic cenoses in the area of wastewater ejection is noted. The ecological condition becomes better 500 m lower the ejections, saprobity index of river waters decreases to the value minor pollution, however the number and biomasses of macrozoobenthos stays lower here than background values.
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32

Ryabushko, L. I., A. V. Bondarenko, and S. S. Barinova. "Indicator benthic microalgae in assessment of the degree of organic water pollution on the example of Crimean coastal waters of the Sea of Azov." Marine Biological Journal 4, no. 3 (September 30, 2019): 69–80. http://dx.doi.org/10.21072/mbj.2019.04.3.07.

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Data of the study of microphytobenthos of Crimean coastal waters of the Sea of Azov during 2005–2006, 2008–2011 and 2014 at 17 stations in the Sivash Gulf (East and West), Kamysh-Burunskaya Bay (Kerch) and bays of Kazantip Cape are given. Totally 200 taxa of microalgae belonging to 77 genera were found. Of these, 78 species – saprobity indicators, related to cyanobacteria (17 %) and diatoms (83 %), from 39 genera, for which bioindicative characteristics of organic water pollution are known, are used for the analysis of different ecotopes and regions. A leading place in microalgae flora belongs to a group of betamesosaprobionts (31 species) – indicators of moderate organic pollution, or of the III class of water quality with index of saprobity S = 2.0. The second place belongs to a group of oligosaprobionts (10 species), or of the II class of water quality, which is typical for natural clean waters with S = 1.0. According to the indicator of microalgae, there are no negative changes in the water quality in the regions. This indicates that anthropogenic impacts do not exceed the self-restoring potential of the marine ecosystems. However, the presence of the IV class of water quality indicators (17–21 %) in benthic communities indicates a constant flow of organic substances, which are gradually utilized by the living component of coastal ecosystems. The comparative data of the ratio of the Sea of Azov indicator microalgae species with those of other seas of moderate latitudes are discussed.
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33

Zimina T, atyana Nikolaevna, Alevtina Georgievna Ardabyeva, and Andrey Vyacheslavovich Kotelnikov. "CHARACTERISTICS OF PHYTOPLANKTON DEVELOPMENT IN MIDDLE CASPIAN IN SUMMER PERIOD." Vestnik of Astrakhan State Technical University. Series: Fishing industry 2021, no. 3 (September 30, 2021): 28–34. http://dx.doi.org/10.24143/2073-5529-2021-3-28-34.

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The article highlights the quantitative and qualitative characteristics of phytoplankton organisms in the water area of the Middle Caspian Sea studied by sections: the city of Makhachkala-cape Sagyndyk, the city of Derbent - cape Sandy, Divichi village - Kenderli bay in 2019-2020. The saprobity index and the corresponding saprobity zone of the studied areas have been determined. It has been found that the dominant group was presented by diatoms (43% of the total com-position). The subdominants were dinophytic algae. The basis of the ecological complex of 2019-2020 was made up of representatives of freshwater groups of algae. Only on the section of Divichi village - Kenderli bay there dominated the species of marine origin. Quantitative indicators of phy-toplankton, both in the Middle Caspian as a whole and by sections, in 2020 decreased compared to the previous year. The general part of the biomass was formed by a large diatom Pseudosolenia calcar-avis and representatives of the group of dinophytic algae. The leading role in the abundance figures of the Middle Caspian in 2020 was played by small-cell phytoplankton, mainly from diatoms - Thalassiosira hustedtii, Thalassionema nitzschioides, Aulacoseira granulate, species of the genus Fragilaria. The highest quantitative indicators of 2020 were noted in the section of the city of Makhachkala-cape Sagyndyk in the productive layer of 0-25 m. In 2019-2020, the saprobiological state of the waters of the Middle Caspian was characterized as moderately polluted
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Susanti, Renita, Sutrisno Anggoro, and Djoko Suprapto. "KONDISI KUALITAS AIR WADUK JATIBARANG DITINJAU DARI ASPEK SAPROBITAS PERAIRAN." Management of Aquatic Resources Journal (MAQUARES) 7, no. 1 (December 19, 2018): 121–29. http://dx.doi.org/10.14710/marj.v7i1.22532.

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Pencemaran air adalah masuknya atau dimasukkannya suatu zat, energi kedalam air oleh kegiatan manusia sehingga kualitas air dapat menurun sampai tingkat tertentu yang mengakibatkan air tidak dapat berfungsi sesuai dengan peruntukannya. Waduk Jatibarang merupakan bendungan yang menampung beberapa aliran sungai yang kemudian menjadi sarana dan prasarana akuatik dan mendukung kegiatan pariwisata yang ada. Masuknya air dari beberapa sungai ke dalam waduk dapat membawa bahan pencemar sehingga dapat mengakibatkan perairan waduk menjadi tercemar. Salah satu indikator penting dalam penentuan kualitas air adalah dengan melihat tingkat saprobitas di perairan. Berdasarkan hal tersebut maka perlu dikaji lebih lanjut mengenai kondisi kualitas perairan Waduk Jatibarang ditinjau dari aspek saprobitas. Tujuan dari penelitian ini adalah untuk mengetahui tingkat saprobitas perairan Waduk Jatibarang. Penelitian ini dilaksanakan pada bulan Mei – Juni 2017. Penelitian ini menggunakan metode studi kasus dengan analisis deskriptif dan analisis korelasi, dengan mengukur parameter pendukung yaitu parameter fisika, kimia, indeks biologi, dan indeks saprobitas. Hasil pengamatan menunjukkan bahwa nilai kelimpahan fitoplankton berkisar antara 236-865 ind/l, indeks keanekaragaman berkisar antara 1.02-1.77 indeks keseragaman berkisar antara 0.58-0.85 dan indeks dominasi berkisar antara 0.14-0.96. Indeks Kualitas Air (IKA) yang didapatkan berkisar antara 51.74-55.06 sehingga kualitas perairan dalam kategori sedang. Berdasarkan hasil penelitian didapatkan bahwa nilai indeks saprobitas berkisar antara 0.60-2.75 dan nilai indeks tropik saprobik berkisar antara 2.02-4.06 sehingga dapat disimpulkan bahwa perairan Waduk Jatibarang termasuk dalam golongan β-mesosaprobik/ oligosaprobik atau tercemar ringan. Water pollution is entry or inclusion by a substance, energy into water by the human activities so that quality of the water can decrease till the certain level which it can cause the water can be not function in accordance with the designation. Jatibarang Reservoir is a dam that holds several streams from the river which then becomes the aquatic facilities and infrastructure and can support the tourism activities. The entry of the water to reservoir, can carry pollutants it can cause the reservoir be polluted. One of the important indicators to determine the quality of the water is the saprobic level in the water. Based on the matter, it is necessary to study further about condition of the water quality of Jatibarang Reservoir in terms of saprobic aspect. The objective of the research has to know the level of waters saprobic in Jatibarang Reservoir. The research was conducted in May – June 2017. This research used case study method with descriptive analysis and correlation analysis, with measuring the supporting parameters like physics, chemistry, biology index, and saprobic index. The result of the observation showed that the phytoplankton abundance value ranged between 236-865 ind/l, index of diversity ranged between 1.02-1.77, uniformity index ranged between 0.49-0.85, and the index of dominance range between 0.14-0.96. Water Quality Index (WQI) obtained ranged between 51.74-55.06 so that quality of the water in medium category . The result of the research, found that the Saprobic Index value ranged between 0.60-2.75, and the Tropic Saprobic Index value ranged between 2.02-4.06, so it can be concluded that the Jatibarang Reservoir belongs to the class of β-mesosaprobic/oligosaprobic or light polluted.
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35

Komala, R., and D. Nurfitriana. "Organic pollution detection based on protozoa saprobity index at Bojonegara waters of Banten Bay." IOP Conference Series: Materials Science and Engineering 1098, no. 5 (March 1, 2021): 052057. http://dx.doi.org/10.1088/1757-899x/1098/5/052057.

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36

Korolevskaya, Valentina, Olga Soprunova, Alina Galperina, and Alina Bareeva. "Assessment of watercourses of Astrakhan by hydrobiological and microbiological indicators." Vestnik of Astrakhan State Technical University. Series: Fishing industry 2019, no. 4 (December 13, 2019): 24–31. http://dx.doi.org/10.24143/2073-5529-2019-4-24-31.

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The paper focuses upon the control over environmental pollution of water bodies by human waste products in urban areas, which can be carried out by monitoring hydrobiological indi-cators. In the course of study undertaken in May 2017 and 2018 there was assessed the ecological and sanitary status of the Volga and Kutum rivers that flow on the territory of Astrakhan. Samples were taken at four stations; the choice of station location was determined by the presence of pollutant sources: proximity of the city market or the power plant. Quantitative and qualitative indicators of the state of phytoplankton were used as hydrobiological indicators; the total number of bacteria and the total content of coliform bacteria were evaluated as microbiological indicators. During the study period the ecological and sanitary state of water was rated as satisfactory. The number of algae taxa increased insignificantly (by 3 units), diatoms predominated in the number of genera and number. Despite the presence of 4-5 species of pure water representatives in the investigated waters, the sanitary and bacteriological situation at all the studied stations was found unfavorable; the water was characterized as polluted and dirty. In 2018, there was registered deterioration of water quality compared to 2017, while the calculated saprobity index in the Kutum river indicates the water quality improvement downstream. The increasing value of the water saprobity index in the Kutum river indicates a tendency toward the growing level of organic pollution and necessitates a comprehensive analysis of hydrobiological indicators for systematic monitoring the aquatic environment.
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37

ANISHCHENKO, Lidia, Igor MOSKALENKO, Marina AVRAMENKO, Yuliya VOROCHAY, and Aleksey PLAKHOTIN. "BIOINDICATIVE, ECOLOGICAL AND ANALYTICAL SPECIFICATIONS OF MINOR STREAMS UNDER THE INFLUENCE OF HAZARDOUS MAN-MADE OBJECTS." Periódico Tchê Química 17, no. 35 (July 20, 2020): 462–76. http://dx.doi.org/10.52571/ptq.v17.n35.2020.40_anishchenko_pgs_462_476.pdf.

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Water bodies are the most vulnerable mean in terms of human-made impact, and the collection of monitoring information on the state of biota and the hydrochemical regime is mandatory per the recommendations of the Water Framework Convention. The paper deals with the necessary arrangements for integrated monitoring and analysis of hydrobiological and environmental analytical databases for prognostic and remediation purposes at water observation points affected by human-made chemically hazardous technogenic object (chemical weapons). The purpose of this paper was to present data of hydrobiological and hydrochemical monitoring of rivers in the area of hazardous human-made objects (chemical weapons) as recommended by the Water Framework Convention for a comparative description of the reactions of European aquatic biota to stress effects. The use of hydrobiological indices and indices of biological diversity to record the anthropogenic impact on water has been validated. The features of environmental analytical data for additional analysis of monitoring specifications dynamics have been identified. The scale parameters of hydrobiological monitoring with the calculation of α-diversity, Shannon index, saprobity index should be based on a complete examination of aquatic and semi-aquatic vegetation and flora. The analysis of the anthropogenic impact of a chemically hazardous human-made object in the Bryansk region (Russian Federation) on aquatic ecosystems over a long period of time using bioindication method (which consists in the assessment of species diversity, calculation of the Shannon index and water saprobity index) revealed that the technogenic component of the impact of reference points on watercourses is minimal.
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Barinova, Sophia, Na Liu, Jiyang Ding, Yonglei An, Xueming Qin, and Chenxin Wu. "Bioindication of Water Quality of the Xinlicheng Reservoir by Algal Communities." Transylvanian Review of Systematical and Ecological Research 22, no. 3 (December 1, 2020): 1–16. http://dx.doi.org/10.2478/trser-2020-0014.

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Abstract The ecological analysis of 31 algae and cyanobacteria indicators assessed the water quality of the Changchun drinking water Xinlicheng Reservoir by using bio-indication methods. The water was fresh, low alkaline, low-saline, middle oxygenated, with reached nutrients and organic pollution and mesotrophic to eutrophic. Statistics reveal significant variables that impacted algal diversity were nutrients, water quality was low to the middle polluted Class II-III. The indices of saprobity and WESI show the high self-purification capacity and low-toxicity impact. We revealed potential threatening species of cyanobacteria. The improving water quality from 2007 up to now has been revealed.
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39

Suprobo, Harisya Diah, Sutrisno Anggoro, and Prijadi Soedarsono. "PENILAIAN PENCEMARAN PERAIRAN DI POLDER TAWANG SEMARANG DITINJAU DARI ASPEK SAPROBITAS." Management of Aquatic Resources Journal (MAQUARES) 2, no. 3 (August 29, 2013): 109–18. http://dx.doi.org/10.14710/marj.v2i3.4192.

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Pencemaran air adalah suatu perubahan keadaan disuatu tempat penampungan air seperti danau, sungai, lautan dan air tanah akibat aktivitas manusia. Polder Tawang Semarang merupakan suatu sistem untuk memproteksi air limpahan dari luar kawasan dan mengendalikan muka air di dalam Kota Lama. Polder Tawang Semarang mempunyai masalah pencemaran akibat limbah yang berasal dari limbah kota, pasar ikan, industri, dan rumah tangga yang masuk ke perairan yang berpengaruh terhadap kekeruhan,bau air dan pertumbuhan mikroorganisme.Tujuan dari penelitian ini adalah untuk mengkaji dan mengetahui tingkat saprobitas di Polder Tawang Semarang berdasarkan nilai SI (Saprobik Indeks) dan TSI (Tropik Saprobik Indeks), mengetahui hubungan antara saprobitas perairan dengan variabel kualitas air (BOD dan DO), serta mengetahui tingkat pencemaran air menggunakan penilaian saprobitas perairan. Penelitian ini menggunakan plankton sebagai materi utama yaitu sampel air dan sampel plankton. Komunitas fitoplankton yang terdapat di Polder Tawang Semarang terdapat 14 genera fitoplankton. Berdasarkan nilai kelimpahan individu fitoplankton dengan nilai rata-rata sebesar 8.423- 8.774 ind/L, sedangkan nilai Saprobik Indeks (SI) berkisar (-0,33) – (0,09) dan Tropik Saprobik Indeks berkisar (-0,67) – (0,14) maka tingkat pencemaran di Polder Tawang Semarang selama penelitian diketegorikan sebagai pencemaran sedang sampai berat (α-mesosaprobik). Dari hasil uji regresi antara saprobitas perairan dengan BOD dan DO menunjukkan adanya korelasi yang kuat yang berarti kontribusi pengaruh BOD dan DO terhadap saprobitas cukup besar.
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40

Khuram, Izaz, Zahir Muhammad, Nadeem Ahmad, Rehman Ullah, and Sophia Barinova. "Green and Charophyte Algae in Bioindication of Water Quality of the Shah Alam River (District Peshawar, Pakistan)." Transylvanian Review of Systematical and Ecological Research 21, no. 1 (April 1, 2019): 1–16. http://dx.doi.org/10.2478/trser-2019-0001.

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Abstract 58 species and infraspecies of Chlorophyta and Charophyta algae were observed in 60 samples collected in September 2017 from the Shah Alam River, Pakistan. The algal species richness and environmental variables increased down the river, except for pH. Bioindication revealed low saline, low alkaline, middle streaming, and middle oxygenated water with low to middle organic pollution with Index saprobity S 1.48-1.73, Class 2-3 of Water Quality. The trophic state was eutrophic and meso-eutrophic with increasing eutrophication down the river. River Pollution Indices RPI demonstrated increasing of pollution in the Shah Alam River in comparison with the parallel part of the Kabul River.
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41

Deksne, Rasma. "Influence Of Wastewater On Zooplankton Community Of The Daugava River After Daugavpils Wastewater Treatment Plant Modernization." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (August 5, 2015): 152. http://dx.doi.org/10.17770/etr2011vol1.890.

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During seasonal studies 2010 (May-October, once/ thrice a month), samples of zooplankton were collected at the Daugava River section from 10 km upstream to 10 km downstream from the Daugavpils treatment plant wastewater discharge into the Daugava River. Changes in the quantitative and qualitative characteristics, saprobity index and species diversity (Shannon-Wiener index) were employed for the analysis of zooplankton community structure in the Daugava River. The Daugava River is polluted by Daugavpils wastewater, however the untoward influence of pollution on zooplankton is observed only in years and in seasons with low water level and discharge. The effect of Daugavpils wastewater pollution on changes in the zooplankton community is considered.
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42

AKBAYEVA, Lyailya, Nurgul MAMYTOVA, Raikhan BEISENOVA, Rumiya TAZITDINOVA, Akhan ABZHALELOV, and Ainur AKHAYEVA. "Studying the Self-Cleaning Ability of Water Bodies and Watercounts of Arshalyn District of Akmola Region." Journal of Environmental Management and Tourism 11, no. 5 (August 28, 2020): 1095. http://dx.doi.org/10.14505//jemt.v11.5(45).07.

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In this paper, the self-purification potential of water bodies and watercourses in the Arshalinsky district was studied in an administrative unit of the Akmola region: Bolshaya Saryoba, Malaya Saryoba, Zhaltyrkol (Arhaniya), Koigeldy, Zhangula, and a section of the Yesil River. The self-cleaning ability of water bodies was assessed by such oxygen indicators as the amount of dissolved oxygen and BOD5. In water samples from water bodies, the dominant phytoplankton and zooplankton species were identified as possible agents or indicators of the self-purification capacity of water bodies. The task of the work was to identify the relationship of self-cleaning ability with inorganic pollution, saprobity.
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43

Alimjanova, K. A., and G. T. Soatov. "Patterns of distribution of algae – indicators of saprobity across the Qashkadaryo River (Republic of Uzbekistan)." Algologia 29, no. 2 (June 30, 2019): 185–200. http://dx.doi.org/10.15407/alg29.02.185.

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44

Kerovec, M., V. Tavčar, and M. Meštrov. "Macrozoobenthos as an Indicator of the Level of the Trophy and Saprobity of Lake Jarun." Acta Hydrochimica et Hydrobiologica 17, no. 1 (1989): 37–45. http://dx.doi.org/10.1002/aheh.19890170106.

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45

Alimjanova, K. A., and G. T. Soatov. "Patterns of Distribution of Algae – Indicators of Saprobity Across the Qashkadaryo River (Republic of Uzbekistan)." International Journal on Algae 21, no. 2 (2019): 149–62. http://dx.doi.org/10.1615/interjalgae.v21.i2.50.

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46

Florescu, Mihaela Hrisa, Maria Magdalena Maxim, Laura Momeu, Mirela Cîmpean, and Karina Paula Battes. "Wetland Algal Communities from Balta Mică a Brăilei Nature Park (Romania)." Transylvanian Review of Systematical and Ecological Research 17, no. 2 (December 1, 2015): 23–44. http://dx.doi.org/10.1515/trser-2015-0061.

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Abstract The present paper aims to characterize the algal communities from Balta Mică a Brăilei Nature Park in terms of their species richness and their ability to reflect the water quality of the aquatic ecosystems they live in. Thirteen shallow floodplain lakes, both permanent and temporary, were considered for the present study, with 16 sampling occasions in 2012 and 2013. More than 300 algal taxa were identified, with the green algae (Chlorophyta) being the dominant phyla in almost all the sampling sites. The trophicity and the organic pollution reached high values in 2012, probably due to low water levels caused by drought. Spring floods from 2013 led to lower trophicity and saprobity levels in all sampled water pools.
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47

Sukop, Ivo, Jan Šťastný, Tomáš Vítek, and Tomáš Brabec. "Annual development of the zoobenthos of the middle course of the Dyje River." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 58, no. 2 (2010): 195–204. http://dx.doi.org/10.11118/actaun201058020195.

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The qualitative and quantitative composition of the macrozoobenthos in the middle course of the Dyje River downstream the Znojmo reservoir was carried out in the years 2007 to 2008. Altogether, 118 taxa of macrozoobenthos were determined in the section between localities Tasovice and Dyjákovice. The highest values of macrozoobenthos were found on the stony substrate with mean values of biomass and density corresponding to 25.4 g . m−2 and 6 033 ind . m−2, respectively. Lower va­lues were determined on the sandy substrates with 5.8 g . m−2 and 5 857 ind . m−2, respectively. The index of saprobity on the locality Tasovice corresponded to betamesosaprobity (Si = 1.70), for the lo­ca­li­ty Dyjákovice the same index was (Si = 1.80).
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šIVIĆ, IVANA, LJILJANA PROTIĆ, and ZORAN MARKOVIĆ. "Southernmost finding in Europe of Aphelocheirus aestivalis (Fabricius, 1794) (Hemiptera: Heteroptera: Aphelocheiridae)." Zootaxa 1496, no. 1 (June 4, 2007): 63–68. http://dx.doi.org/10.11646/zootaxa.1496.1.4.

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During hydrobiological investigations of the Southern Morava basin (southeastern Serbia) from 1998. to 2004, the southernmost discovery of Aphelocheirus aestavilis (F.) in Europe was recorded in 13 rivers. Over the seven-year period of our investigations 398 individuals (from larva to imago stages) of this species were collected. Of all samples gathered, 85.71% were males and 14.29% were females. In the investigated rivers, A. aestavilis overwinters in all stages. It was found in the rivers up to 500 m above sea level, most of them located 100 to 200 m above sea level. It prefers rapid and deep rivers, and eurythermal water suits A. aestavilis better than cold water. The species was not found in waters in which the saprobity index exceeded 2.0.
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Belyaeva, P. G., and R. A. Aristova. "Ecological Status of the Chusovaya River by Its Epilithon and Hydrochemical Indices (near the Chusovoy Town)." Povolzhskiy Journal of Ecology, no. 3 (November 19, 2020): 259–70. http://dx.doi.org/10.35885/1684-7318-2020-3-259-270.

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As a result of our study, data were obtained on the structure of the epilithon and the physicochemical parameters of the waters in the Chusovaya river near the town of Chusovoy for 2017–2018. The taxonomic structure, quantitative characteristics, dominant species, features of the distribution of the main groups of algae were studied. The algal flora includes 191 infrageneric algal taxa (168 species) from 6 divisions, 10 classes, 24 orders, 51 families and 86 genera. The taxonomic spectrum is based on diatoms (67.5% of the total numbers), green algae (21%), and cyanobacteria (9%). In the environmental and geographical aspects, the epilithon is mainly represented by widespread salinityindifferent benthic and plankton-benthic species, having an optimum in slightly alkaline or neutral waters. The epiliton of the Chusovaya river has reached a fairly high level of development. The values of the total biomass varied from 1.46 to 46.32 g/m2, and the abundance did from 1.5 to 31.7 billion cells/m2. The species diversity index (an average of 3.22±0.18) indicates species-rich and balanced algocenoses of the Chusovaya river, while in summer the indices are 1.9–2.2 times lower than in autumn. The dominant algae species differed in seasons, they were represented by diatoms or cyanobacteria in terms of their number, and by diatoms in terms of their biomass. In water samples with epilithon flushing, higher concentrations of chemical substances (NH4+, NO3-, PO43-, and Fetot) were noted than in river water, indicating the ability of the epilithon to accumulate substances. Significant changes in the biomass and/or abundance of epilithon as a function of the content of chemical substances in water and fouling washes were revealed. By the value of the saprobity index (from 1.34 to 2.27), the sanitary-biological state of the water in the Chusovaya river is assessed as satisfactorily pure (II–III water quality classes), the saprobity zone is ο-β-, β-mesosaprobic.
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Sarmanov, Aybek, Nurlan Khabibullovich Sergaliev, Kazhmurat Maksutovich Akhmedenov, Erzhan Sakhypzhanovich Sultanov, Gleb Sergeevich Kashevarov, and Larisa Alexandrovna Frolova. "TAXONOMIC COMPOSITION AND QUANTATIVE INDICATORS OF MACROZOOBENTHOS IN WATER BODIES OF WEST KAZAKHSTAN REGION." Vestnik of Astrakhan State Technical University. Series: Fishing industry 2021, no. 3 (September 30, 2021): 35–46. http://dx.doi.org/10.24143/2073-5529-2021-3-35-46.

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The article presents the results of the study of macrozoobenthos communities of six lakes in the West Kazakhstan region in the summer-autumn period: Shalkar, Balykty Sarkyl, Edilsor, Glubinnoye, Prorva and Sulukol. Lakes Prorva and Sulukol are located within the steppe, the lakes Shalkar, Balykty Sarkyl, Glubinnoye - in the semi-desert, Lake Edilsor - in the desert zone. In total, 197 samples of zoobenthos were taken according to generally accepted hydrobiological methods. There are analized the indices of the number and biomass of aquatic organisms in the studied reservoirs. According to the results of the studies carried out, the organisms of 66 taxa from the groups Oligochaeta, Hirudinea, Bivalvia, Gastropoda, Crustacea, and Insecta were found in benthic samples. Of thesethere were found oligochaetes - 2 species, leeches - 1 species, bivalves and gastropods - 3 species each, crustaceans - 4 species and insects - 53 taxa. Among insects, dip-terans (23 taxa, of which chironomids - 18), mayflies, caddis flies, dragonflies, bugs and beetles were distinguished by the greatest species diversity. It was noted that in the composition of benthic communities, diptera larvae dominated in abundance, the main contribution to the biomass was made by bivalve molluscs. Calculations of the Shannon – Weaver index demonstrate a low species diversity of communities for all water bodies. The highest indices of species diversity were noted in Lake Edilsor - 1.64 bit / specimen, the lowest - in lakes Sulukol and Shalkar - 0.6 bit / specimen. and 0.7 bit / copy. respectively. According to the calculations of the saprobity index, lakes Glubinnoye, Prorva and Balykty Sarkyl belong to the ß-mesosaprobic zone, Lake Edilsor (S = 2.72) to the ɑ-mesosaprobic zone, and the indicators of Lake Sulukol (S = 3.8) correspond to the polysaprobic zone. The values of the saprobity indices of the studied lakes lie within the beta-mesosaprobic – polysaprobic zones. By water quality the studied lakes are assessed as moderately polluted and polluted. According to the classification of S.P. Kitaev (2007) the investigated water bodies are assessed as water bodies of medium feeding. The conducted studies have significantly expanded the taxonomic lists of benthic organisms in this region
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