Yıl: 2021 Cilt: 17 Sayı: 1 Sayfa Aralığı: 34 - 55 Metin Dili: Türkçe DOI: 10.22392/actaquatr.751773 İndeks Tarihi: 05-08-2021

Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi

Öz:
Bentik algler indikatör türler içerir. Özellikle lotik ekosistemlerin ekolojik yapısının belirlenmesinde çok iyi birgöstergedir. Günümüzde insan faaliyetleri sular üzerinde birçok baskı oluşturmuştur, bunlardan besin zenginleştirmesiekolojik durumu değiştiren en önemli su kalitesi sorunudur. Bu çalışmada Doğu Karadeniz Havzası içinde yer alan ElekçiDeresi’nin fiziko-kimyasal ve biyolojik (bentik diyatomeler) özelliklerinin ve su kalitesinin değerlendirilmesi amaçlanmıştır.Bir yıl boyunca aylık olarak üç farklı lokalitede örnekleme yapılmıştır. Yirmi farklı su parametresinin analizi zamansal vemekânsal olarak değerlendirilmiştir. Yerüstü Su Kalitesi Yönetmeliği’ne göre akarsuyun su kalite sınıfı belirlenmiştir. Çokdeğişkenli istatistiksel analizler, su kalite indeksi (WQI), çeşitlilik indeksleri, klorofil-a, Palmer’ın pollusyon indeksi vebaskın cins skorları kullanılarak suyun trofik düzeyi ve su kalitesi değerlendirilmiştir. Yıllık ortalama değerlere göre, ElekçiDeresi amonyum azotu ve toplam fosfor parametreleri bakımından II. sınıf, serbest klor hariç (IV. sınıf) diğer su kaliteparametreleri bakımından I. sınıftır. Elekçi Deresi’ndeki WQI değeri su kalite özelliğinin “mükemmel” olduğunugöstermiştir. Faktör analizinde, birinci faktöre göre nütrient elementleri su kalitesindeki değişikliklerden sorumludur. Diğerfaktörlerdeki bileşenler jeolojik yapıdan ve klimatik faktörlerden oluşmaktadır.Elekçi Deresi’nde toplam 93 bentik diyatome taksonu tanımlanmıştır. Navicula, Nitzschia, Cymbella ve Gomphonema enfazla kaydedilen taksonlardır. Cocconeis placentula var. euglypta, Gomphonema truncatum, Navicula lanceolata, N.tripunctata ve Nitzschia palea tüm istasyonlarda her mevsim bulunmuştur. Shannon ve Simpson çeşitlilik indeksi analizsonuçlarına göre Elekçi Deresi “zayıf” düzeyde çeşitliliğe sahiptir, kirlilik düzeyi ise “orta”dır. Nemli subtropikal iklimbölgesinde bulunan Elekçi Deresi düzensiz rejimli bir akarsudur. Çevresel ve klimatik faktörler derenin diyatomekomünitesini doğrudan etkilemiştir. Pollusyon indeksi sonucu çok hafif organik kirlilik tespit edilmiştir. Klorofil-akonsantrasyonuna göre derede ötrofikasyon riski yoktur. Dominant alg taksonlarının skor değerleri Elekçi Deresi’nin trofikseviyesinin “mezotrofik/mezo-ötrofik”, su kalitesinin “orta/orta-kirli” olduğunu göstermiştir. Genel sonuçlar, ElekçiDeresi’nin akış yönünde antropojenik faaliyetlerle ilişkilendirilebilen çeşitli kaynaklardan gelen kirleticilerle kontamineolduğunu ve diyatome çeşitliliğinin bu durumdan etkilendiğini göstermiştir.
Anahtar Kelime:

Assessment of Stream Water Quality in a Temperate Turkey River Basin by Multivariate Analysis and Biological Approaches

Öz:
Benthic algae include indicator species. Particularly, it is a very good indicator to determine the ecologic structure of lotic ecosystems. Nowadays, human activities have produced multiple pressures on waters, of them nutrient enrichment is the most important water quality problem that changed the ecological status. In this research, it is aimed to evaluate the physicochemical and biologic (benthic diatoms) properties and water quality of Elekçi Stream located in the Eastern Black Sea Basin. Throughout the year, samples from three different localities were collected monthly. Analysis of twenty water parameters were evaluated spatially and temporally. According to the Surface Water Quality Regulation, the water quality class of the stream has been determined. Trophic level and water quality of the stream were evaluated by using multivariate statistical analysis, water quality index (WQI), diversity indices, chlorophyll-a, Palmer’s index of pollution, and dominant genus scores. According to annual average values, Elekçi Stream is class II as to ammonium nitrogen and total phosphorus parameters. Also, it has class I in terms of other water quality parameters, excluding free chlorine (class IV). WQI value in the Elekçi Stream showed that the water quality feature is “excellent”. In factor analysis, the first factor showed that nutrient elements are responsible for changes in water quality. Components in other factors consist of geological structure and climate factors. Total 93 benthic diatom taxa have been defined in Elekçi Stream. Navicula, Nitzschia, Cymbella, and Gomphonema genera are the most recorded taxa. Cocconeis placentula var. euglypta, Gomphonema truncatum, Navicula lanceolata, N. tripunctata, and Nitzschia palea were recorded in all stations every season. According to the analysis results of Shannon and Simpson diversity indices, Elekçi Stream has a “poor” level of diversity, and the pollution level is “moderate”. Elekçi Stream, located in the humid subtropical climate zone, is an irregularly flowed stream. Environmental and climatic factors directly affected the diatom community of the stream. As a result of the pollution index, very light organic pollution was detected. The stream does not carry eutrophication risk in terms of chlorophyll-a concentration. The scores of the dominant algal taxa showed that the trophic level of Elekçi Stream is “mesotrophic/meso-eutrophic” and the water quality is “moderate/moderately polluted”. General results showed Elekçi Stream is contaminated with pollutants coming from various sources that can be associated with anthropogenic activities downstream, and diversity of diatoms are affected by this sitıation.
Anahtar Kelime:

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  • Alley, E. R. (2007). Water quality control handbook. Volume 2, McGraw-Hill, New York.
  • APHA-AWWA-WEF. (1998). Standard methods for the examination of water and wastewater. 20th edition, America Public Health Association, American Water Works Association, Water Environment Federation, Washington, DC.
  • Atıcı, T., Tokatlı, C., & Çiçek, A. (2018). Diatoms of Seydisuyu Stream Basin (Turkey) and assessment of water quality by statistical and biological approaches. Sigma Journal of Engineering and Natural Sciences, 36(1), 271–288.
  • Başören, Ö., & Kazancı, N. (2016). Water quality assessment of Fırtına Stream (Rize, Turkey) by using various macroinvertebrate based metrics and physicochemical variables. Review of Hydrobiology, 9(1), 1–16.
  • Bere, T. (2016). Challenges of diatom-based biological monitoring and assessment of streams in developing countries. Environmental Science and Pollution Research, 23(6), 5477–5486.
  • Chessman, B. C., & Townsend, S. A. (2010). Differing effects of catchment land use on water chemistry explain contrasting behaviour of a diatom index in tropical northern an temperate southern Australia. Ecological Indicators, 10, 620–626.
  • Cox, E. J. (1996). Identification of Freshwater Diatoms from Live Material. Chapman & Hall, London.
  • Çelekli, A., Toudjani, A., Gümüş, E. Y., Kayhan, S., Lekesiz, H., Ö., & Çetin, T. (2019). Determination of trophic weight and indicator values of diatoms in Turkish running waters for water quality assessment. Turkish Journal of Botany, 43(1), 90–101.
  • Dalkıran, N., Karacaoğlu, D., Taş Mestik, D., Karabayırlı, G., Atak, S., Arda Koşucu, T. N., Coşkun, F., & Akay, E. (2020). Mustafakemalpaşa Çayı’nın (Bursa) su kalitesinin faktör analizi kullanılarak değerlendirilmesi. Acta Aquatica Turcica, 16(1), 124–137.
  • Dalu, T., & Froneman, P. W. (2016) Diatom based water quality monitoring in Africa: challenges and future prospects. Water SA, 42, 551–559.
  • Dalu, T., Wasserman, R. J., Magoro, M. L., Mwedzi, T., Froneman, P. W., & Weyl, O. L. (2017). Variation partitioning of benthic diatom community matrices: effects of multiple variables on benthic diatom communities in an Austral temperate river system. Science of the Total Environment, 601, 73–82.
  • Dodds, W. K., Jones, J. R., & Welch, E. B. (1998). Suggested classification of stream trophic state: distributions of temperate stream types by chlorophyll, total nitrogen, and phosphorus. Water Research, 32(5), 1455– 1462.
  • Egemen, Ö., & Sunlu, U. (1996). Su kalitesi. Ege Üniversitesi Su Ürünleri Fakültesi Yayınları, Yayın No 14, İzmir.
  • Hartley, B. (1996). An atlas of British diatoms. Balogh Scientific Books, Biopress Ltd, Bristol, UK.
  • Hill, B. H., Stevenson, R. J., Pan, Y., Herlihy, A. T., Kaufmann, P. R., & Johnson, C. B. (2001). Comparison of correlations between environmental characteristics and stream diatom assemblages characterized at genus and species levels. Journal of the North American Benthological Society, 20(2), 299–310.
  • Horton, R. K. (1965). An index number system for rating water quality. Journal of Water Pollution Control Federation, 37(3), 300–306.
  • Jakovljević, O. S., Popović, S. S., Vidaković, D. P., Stojanović, K. Z., & Krizmanić, J. Ž. (2016). The application of benthic diatoms in water quality assessment (Mlava River, Serbia). Acta Botanica Croatica, 75(2), 199–205.
  • Jin, L., Whitehead, P., & Hadjikakou, M. (2013). A study of the Yesilirmak River Catchment in Northern Turkey: Spatial patterns and temporal trends in water quality. Journal of Environmental Protection, 4, 104–120.
  • Kazancı, N. (2016). Headwater streams. Review of Hydrobiology, 9(2), 165–171.
  • Kazancı, N., Girgin, S., Dügel, M., & Oğuzkurt, D. (1997). Akarsuların çevre kalitesi yönünden değerlendirilmesinde ve izlenmesinde biyotik indeks yöntemi. Türkiye iç suları araştırmaları dizisi II, İmaj Yayınevi, Ankara.
  • Kelly, M. G., & Whitton, B. A. (1995). The trophic diatom index: a new index for monitoring eutrophication in rivers. Journal of Applied Phycology, 7(4), 433–444.
  • Kelly, M. G., Adams, C., Graves, A. C., Jamieson, J., Krokowski, J., Lycett, E. B., Murray-Bligh, J., Pritchard, S., & Wilkins, C. (2001). The Trophic Diatom Index: A user’s manual. Revised edition, R&D Technical Report E2/TR2, Environment Agency, Bristol.
  • Khalid, S. (2019). An assessment of groundwater quality for irrigation and drinking purposes around brick kilns in three districts of Balochistan province, Pakistan, through water quality index and multivariate statistical approaches. Journal of Geochemical Exploration, 197, 14-26.
  • Kocataş, A. (2006). Ekoloji ve çevre biyolojisi. Ege Üniversitesi Yayını, İzmir.
  • Köse, E., Tokatlı, C., & Çiçek, A. (2014). Monitoring stream water quality: a statistical evaluation, Polish Journal of Environmental Studies, 23(5),1637–1647.
  • Köse, E., Emiroğlu, Ö., Çiçek, A., Tokatlı, C., Başkurt, S., & Aksu, S. (2018). Sediment quality assessment in Porsuk Stream Basin (Turkey) from a multi-statistical perspective. Polish Journal of Environmental Studies, 27(2), 747–752.
  • Krammer, K., & Lange-Bertalot, H. (1986). Süßwasserflora flora von Mitteleuropa, Bd. 2/1: Bacillariophyceae: Teil 1: Naviculaceae. Gustav Fischer Verlag, Stuttgart, New York.
  • Krammer, K., & Lange-Bertalot, H. (1988). Süßwasserflora flora von Mitteleuropa, Bd. 2/2: Bacillariophyceae: Teil 2: Bacillariaceae, Epithemiaceae, Surirellaceae. VEB Gustav Fischer Verlag, Jena.
  • Krammer, K., & Lange-Bertalot, H. (1991a). Süßwasserflora flora von Mitteleuropa, Bd. 2/3: Bacillariophyceae: Teil 3: Centrales, Fragilariaceae, Eunotiaceae. Gustav Fischer Verlag, Stuttgart, Jena.
  • Krammer, K., & Lange-Bertalot, H. (1991b). Süßwasserflora flora von Mitteleuropa, Bd. 2/4: Bacillariophyceae: Teil 4: Achnanthaceae, Kritische Ergänzungen zu Navicula (Lineolatae) und Gomphonema, Gesamtliteraturverzeichnis. Gustav Fischer Verlag, Stuttgart, Jena.
  • Kükrer, S., & Mutlu, E. (2019). Assessment of surface water quality using water quality index and multivariate statistical analyses in Saraydüzü Dam Lake, Turkey. Environmental Monitoring and Assessment, 191(2), 71. https://doi.org/10.1007/s10661-019-7197-6
  • Kwandrans, J., Eloranta, P., Kawecka, B., & Wojtan, K. (1998). Use of benthic diatom communities to evaluate water quality in rivers of southern Poland. Journal of Applied Phycology, 10(2), 193–201.
  • La Mora-Orozco, D., Flores-Lopez, H., Rubio-Arias, H., Chavez-Duran, A., & Ochoa-Rivero, J. (2017). Developing a water quality index (WQI) for an irrigation dam. International Journal of Environmental Research and Public Health, 14(5), 439. doi: 10.3390/ijerph14050439.
  • Lange-Bertalot, H. (1979). Pollution tolerance of diatoms as a criterion for water quality estimation. Nova Hedwigia Beihefte, 64, 285–304.
  • Lavoie, I., Campeau, S., Zugic-Drakulic, N., Winter, J. G., and Fortin, C. (2014). Using diatoms to monitor stream biological integrity in Eastern Canada: an overview of 10 years of index development and ongoing challenges. Sci. Total Environ. 475, 187–200.
  • Lobo, E. A., Heinrich, C. G., Schuch, M., Wetzel, C. E., & Ector, L. (2016). Diatoms as bioindicators in rivers. In: Necchi Jr., O. (ed), River Algae. Springer, Cham.
  • Maraşlıoğlu, F., Soylu, E. N., & Altürk Karaca, S. (2017). Seasonal and spatial variation of epilithic algal community in Batlama Stream (Giresun, Turkey). Hittite Journal of Science and Engineering, 4(1), 39– 44.
  • Marcel, R., Berthon, V., Castets, V., Rimet, F., Thiers, A., Labat, F., & Fontan, B. (2017). Modelling diatom life forms and ecological guilds for river biomonitoring. Knowledge & Management of Aquatic Ecosystems, 418, 1–15.
  • Mutlu, E. (2019). Evaluation of spatio-temporal variations in water quality of Zerveli Stream (Northern Turkey) based on water quality index and multivariate statistical analyses. Environmental Monitoring and Assessment, 191(6): 335. https://doi.org/10.1007/s10661-019-7473-5
  • Mutlu, T., & Verep, B. (2018). The water quality of streams flowing into South Eastern Black Sea coasts in terms of physico-chemical properties. Fresenius Environmental Bulletin, 27(5A), 3752-3758.
  • Nather Khan, I. S. A. (1990). Assessment of water pollution using diatom community structure and species distribution - a case study in a tropical river basin. Internationale Revue der Gesamten Hydrobiologie und Hydrographie, 75(3), 317–338.
  • Nhiwatiwa, T., Dalu, T., & Sithole, T. (2017). Assessment of river quality in a subtropical Austral river system: a combined approach using benthic diatoms and macroinvertebrates. Applied Water Science, 7(8), 4785– 4792.
  • Omer, N. H. (2019). Water quality parameters. IntechOpen. http://dx.doi.org/10.5772/intechopen.89657
  • Omwene, P. I., Öncel, M. S., Çelen, M., & Kobya, M. (2019). Influence of arsenic and boron on the water quality index in mining stressed catchments of Emet and Orhaneli streams (Turkey). Environmental Monitoring and Assessment, 191(4), 199. https://doi.org/10.1007/s10661-019-7337-z
  • Özlü, T. (2012). Elekçi Deresi (Fatsa) Havzası’nın hidrolojik sorunları ve bunların iklim şartları ile ilişkileri. ODÜ Sosyal Bilimler Araştırmaları Dergisi (ODÜSOBİAD), 3(6), 282–299.
  • Özoktay, S., & Taş, B. (2013). Investigating of trophic state of tree streams having different sizes (Melet River, Turnasuyu Stream and Akçaova Stream). International Conference on Environmental Science and Technology (ICOEST'2013-Cappadocia), June 18-21, Ürgüp, Nevsehir, Turkey.
  • Palmer, C. M. (1969). A composite rating of algae tolerating organic pollution. Journal of Phycology, 5(1), 78- 82.
  • Palmer, C. M. (1977). Algae and water pollution. Municipal Environmental Research Laboratory Office of Research and Development, USEPA EPA/600/9-77-036.
  • Peerapornpisal, Y., Pekkoh, J., Powangprasit, D., Tonkhamdee, T., Hongsirichat, A., & Kunpradid, T. (2007). Assessment of water quality in standing water by using dominant phytoplankton (AARL-PP Score). Journal of Fisheries Technology Research, 1(1), 71–81.
  • Pielou, E. C. (1960). A single mechanism to account for regular, random and aggregated populations. The Journal of Ecology, 48(3), 575-584.
  • Round, F. E. (1993). A review and methods for the use of epilithic diatoms for detecting and monitoring changes in river water quality. Methods for the Examination of Waters and Associated Materials, Her Majesty’s Stationary Office, London.
  • Salmaso, F., Quadroni, S., Compare, S., Gentili, G., & Crosa, G. (2019). Benthic diatoms as bioindicators of environmental alterations in different watercourses of northern Italy. Environmental Monitoring and Assessment, 191(3), 158. https://doi.org/10.1007/s10661-019-7290-x
  • Shannon, C. E. & Weaver, W. (1949). The mathematical theory of communication. University of Illinois Press, Urbana.
  • Simpson, E. H. (1949). Measurement of diversity. Nature, 163(4148), 688–688.
  • Sládeček, V. (1986). Diatoms as indicators of organic pollution. Acta Hydrochimica et Hydrobiologica, 14(5), 555–566.
  • Solak, C. N. (2011). The application of diatom indices in the Upper Porsuk Creek Kütahya-Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 11(1), 31–36.
  • Solak, C. N., & Àcs, É. (2011). Water quality monitoring in European and Turkish rivers using diatoms. Turkish Journal of Fisheries and Aquatic Sciences, 11(2), 329–337.
  • Solak, C. N., Ector, L., Wojtal, A. Z., Ács, É., & Morales, E. (2012). A review of investigations on diatoms (Bacillariophyta) in Turkish inland waters. Nova Hedwigia, Beiheft, 141, 431–462.
  • Sonneman, J. A., Walsh, C. J., Breen, P. F., & Sharpe, A. K. (2001). Effects of urbanization on streams of the Melbourne region, Victoria, Australia. II. Benthic diatom communities. Freshwater Biology, 46, 553– 565.
  • Stevenson, J. (2014). Ecological assessments with algae: a review and synthesis. Journal of Phycology, 50, 437– 461.
  • Strickland, J. D. H., & Parsons, T. R. (1972). A practical handbook of seawater analysis. Bulletin 167 (second edition), Fisheries Research Board of Canada, Ottawa.
  • Su, S., Zhi, J., Lou, L., Huang, F., Chen, X., & Wu, J. (2011). Spatio-temporal patterns and source apportionment of pollution in Qiantang River (China) using neural-based modeling and multivariate statistical techniques. Physics and Chemistry of the Earth, Parts A/B/C, 36(9-11), 379–386.
  • Szczepocka, E., & Szulc, B. (2009). The use of benthic diatoms in estimating water quality of variously polluted rivers. Oceanological and Hydrobiological Studies, 38(1), 17–26.
  • Şahin, B. (2003). Epipelic and epilithic algae of lower parts of Yanbolu River (Trabzon, Turkey). Turkish Journal of Biology, 27(2), 107–115.
  • Tan, X., Zhang, Q., Burford, M. A., Sheldon, F., & Bunn, S. E. (2017). Benthic diatom based indices for water quality assessment in two subtropical streams. Frontiers in Microbiology, 8, 601.
  • Taş, B., & Kolören, Z. (2017). Evaluation of water qualities of discharging area of some running waters into Black Sea in the Central Black Sea Region of Turkey. Review of Hydrobiology, 10(1), 1–19.
  • Taş, B., & Kurt, I. (2014). Aşağı Melet Irmağı’nın (Ordu) diyatomeler dışındaki epipelik alglerinin çeşitliliği. Karadeniz Fen Bilimleri Dergisi, 4(11), 49–63.
  • Taş, B., & Yılmaz, Ö. (2015). Epilithic Algal Diversity of Cimil Stream (Rize, Turkey). Turkish Journal of Agriculture-Food Science and Technology, 3(10), 826–833.
  • Taş, B., Can, Ö., & Kolören, Z. (2011). Investigation on photosynthetic pigments content of lotic systems (Blacksea River Basin, Ordu-Turkey). EEST Part A: Energy Science and Research, 28(1), 417–426.
  • Taş, B., Çetin, M. 2016. Diversity and ecology of algae from the Ilıca Stream, Eastren Black Sea Basin, Turkey. Second Symposium on EuroAsian Biodiversity (SEAB-2016), 23-27.05.2016, Antalya, Turkey.
  • Taş, B., Özoktay, S., & Kolören, Z. (2017). Environmental study of epiphytic algae on emergent macrophytes in the lower part of Akçaova Stream (Ordu, Turkey). International Symposium on EuroAsian Biodiversity (SEAB2017), July 05 - 08, 2017, Minsk, Belarus.
  • Taş, B., Tepe, Y., Ustaoğlu, F., & Alptekin, S. (2019). Benthic algal diversity and water quality evaluation by biological approach of Turnasuyu Creek, NE Turkey. Desalination and Water Treatment, 155, 402–415.
  • Taş, B., Yılmaz, Ö., & Kurt, I. (2015). Aşağı Melet Irmağı (Ordu, Türkiye)’nda su kalitesinin göstergesi olan epipelik diyatomeler. Türk Tarım-Gıda Bilim ve Teknoloji Dergisi, 3(7), 610–616.
  • Temizel, B., Soylu, E. N., & Maraşlıoğlu, F. (2017). Water quality assessment of the Pazarsuyu Stream based on epilithic diatom communities. Fundamental and Applied Limnology, 190(3), 189–197.
  • Tepe, Y., & Aydın, H. (2017). Water quality assessment of an urban water, Batlama Creek (Giresun), Turkey by applying multivariate statistical techniques. Fresenius Environmental Bulletin, 26(11), 6413–6420.
  • Tokatlı, C., Solak, C. N., Yılmaz, E., Atıcı, T., & Dayıoğlu, H. (2019). Research into the epipelic diatoms of the Meriç and Tunca rivers and the application of the biological diatom index in water quality assessment. Aquatic Sciences and Engineering, 35(1), 19–26.
  • Tokatlı, C. (2020). Ergene Nehir Havzası su kalitesinin çok değişkenli istatistik analizler kullanılarak değerlendirilmesi. Journal of Limnology and Freshwater Fisheries Research, 6(1), 38–46.
  • Tokatlı, C., Solak, C. N., & Yılmaz, E. (2020). Water quality assessment by means of bio-indication: A case study of Ergene River using biological diatom index. Aquatic Sciences and Engineering, 36(2), 43–51.
  • Tuchman, M., & Blinn, D. W. (1979). Comparison of attached algal communities on natural and artificial substrata along a thermal gradient. British Phycological Journal, 14(3), 243-254.
  • Uslu, O., & Türkman, A. (1987). Su kirliliği ve kontrolü. T.C. Başbakanlık Çevre Genel Müdürlüğü Yayınları, Eğitim Dizisi 1, Ankara.
  • Ustaoğlu, F., & Islam, M. S. (2020). Potential toxic elements in sediment of some rivers at Giresun, Northeast Turkey: A preliminary assessment for ecotoxicological status and health risk. Ecological Indicators, 113, 106237. https://doi.org/10.1016/j.ecolind.2020.106237
  • Ustaoğlu, F., & Tepe, Y. (2019). Water quality and sediment contamination assessment of Pazarsuyu Stream, Turkey using multivariate statistical methods and pollution indicators. International Soil and Water Conservation Research, 7(1), 47–56.
  • Ustaoğlu, F., Tepe, Y., & Taş, B. (2020a). Assessment of stream quality and health risk in a subtropical Turkey river system: A combined approach using statistical analysis and water quality index. Ecological Indicators, 113, 105815. https://doi.org/10.1016/j.ecolind.2019.105815
  • Ustaoğlu, F., Tepe, Y., & Aydın, H. (2020b). Heavy metals in sediments of two nearby streams from Southeastern Black Sea coast: Contamination and ecological risk assessment. Environmental Forensics, 21(2), 145–156.
  • Ustaoğlu, F., Tepe, Y., Aydın, H., & Akbaş, A. (2017). Investigation of water quality and pollution level of lower Melet River, Ordu, Turkey. Alınteri Journal of Agricultural Sciences, 32(1), 69–79.
  • Van Dam, H., Mertens, A., & Sinkeldam, J. (1994). A coded checklist and ecological indicator values of freshwater diatoms from the Netherlands. Netherland Journal of Aquatic Ecology, 28(1), 117–133.
  • Varol, S., & Davraz, A. (2015). Evaluation of the groundwater quality with WQI (Water Quality Index) and multivariate analysis: a case study of the Tefenni plain (Burdur/Turkey). Environmental Earth Sciences, 73(4), 1725–1744.
  • Vasiljević, B., Krizmanić, J., Ilić, M., Marković, V., Tomović, J., Zorić, K., & Paunović, M. (2014). Water quality assessment based on diatom indices–small hilly streams case study. Water Research and Management, 4(2), 31–35.
  • Vasiljević, B., Simić, S. B., Paunović, M., Zuliani, T., Krizmanić, J., Marković, V., & Tomović, J. (2017). Contribution to the improvement of diatom-based assessments of the ecological status of large rivers—the Sava River case study. Science of the Total Environment, 605, 874–883.
  • Virtanen, L. K., & Soininen, J. (2016). Temporal variation in community–environment relationships and stream classifications in benthic diatoms: Implications for bioassessment. Limnologica, 58, 11–19.
  • Wang, Y., Wang, P., Bai, Y., Tian, Z., Li, J., Shao, X., Mustavich, L.F., & Li, B. L. (2013). Assessment of surface water quality via multivariate statistical techniques: a case study of the Songhua River Harbin region, China. Journal of Hydro-environment Research, 7(1), 30–40.
  • Watanabe, T., Asai, K., & Houki, A. (1988). Numerical water quality monitoring of organic pollution using diatom assemblages. Proc Ninth Int Diatom Symp 1986, FE Round Ed. Koeltz Scientific Books, Koenigstein, Germany, 123–141.
  • Wetzel, R. G. 1983. Limnology. 2nd edition, Saunders College Publishing, Philadelphia, PA. Whitton, B. A., & Kelly, M. G. (1995). Use of algae and other plants for monitoring rivers. Australian Journal of Ecology, 20(1), 45–56.
  • WHO. (2011). Guidelines for drinking-water quality. 4 th edition, World Health Organization, Geneva, Switzerland.
  • Wilhm, J. L., & Dorris, T. C. (1968). Biological parameters for water quality criteria. BioScience, 18(6), 477- 481.
  • Yadav, A. K., Khan, P., & Sharma, S. K. (2010). Water Quality Index Assessment of Groundwater in Todaraisingh Tehsil of Rajasthan State, India-A Greener Approach. Journal of Chemistry, 7(1), 428–432.
  • Yılmaz, Ö., & Taş, B. (2013). Elekçi Deresi (Fatsa, Ordu)’nin epilitik diyatomeleri. III. Sulak Alanlar Kongresi, 23-25 Ekim, Samsun.
  • Yılmaz, Ö., & Taş, B. (2016). Epilithic soft algae (Except Diatoms) of Elekci Stream (Ordu, Turkey). FABA 2016, 3-5 November, Antalya, Turkey.
  • YSKY (2012). Yerüstü Su Kalitesi Yönetmeliği. Resmi Gazete No. 28483, tarih 30.11.2012, Ankara.
APA TAŞ B, Yılmaz Ö, USTAOGLU F (2021). Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. , 34 - 55. 10.22392/actaquatr.751773
Chicago TAŞ Beyhan,Yılmaz Özlem,USTAOGLU FIKRET Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. (2021): 34 - 55. 10.22392/actaquatr.751773
MLA TAŞ Beyhan,Yılmaz Özlem,USTAOGLU FIKRET Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. , 2021, ss.34 - 55. 10.22392/actaquatr.751773
AMA TAŞ B,Yılmaz Ö,USTAOGLU F Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. . 2021; 34 - 55. 10.22392/actaquatr.751773
Vancouver TAŞ B,Yılmaz Ö,USTAOGLU F Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. . 2021; 34 - 55. 10.22392/actaquatr.751773
IEEE TAŞ B,Yılmaz Ö,USTAOGLU F "Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi." , ss.34 - 55, 2021. 10.22392/actaquatr.751773
ISNAD TAŞ, Beyhan vd. "Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi". (2021), 34-55. https://doi.org/10.22392/actaquatr.751773
APA TAŞ B, Yılmaz Ö, USTAOGLU F (2021). Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. Acta Aquatica Turcica, 17(1), 34 - 55. 10.22392/actaquatr.751773
Chicago TAŞ Beyhan,Yılmaz Özlem,USTAOGLU FIKRET Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. Acta Aquatica Turcica 17, no.1 (2021): 34 - 55. 10.22392/actaquatr.751773
MLA TAŞ Beyhan,Yılmaz Özlem,USTAOGLU FIKRET Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. Acta Aquatica Turcica, vol.17, no.1, 2021, ss.34 - 55. 10.22392/actaquatr.751773
AMA TAŞ B,Yılmaz Ö,USTAOGLU F Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. Acta Aquatica Turcica. 2021; 17(1): 34 - 55. 10.22392/actaquatr.751773
Vancouver TAŞ B,Yılmaz Ö,USTAOGLU F Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi. Acta Aquatica Turcica. 2021; 17(1): 34 - 55. 10.22392/actaquatr.751773
IEEE TAŞ B,Yılmaz Ö,USTAOGLU F "Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi." Acta Aquatica Turcica, 17, ss.34 - 55, 2021. 10.22392/actaquatr.751773
ISNAD TAŞ, Beyhan vd. "Ilıman Bir Türkiye Nehir Havzasında Dere Su Kalitesinin Çok Değişkenli Analiz ve Biyolojik Yaklaşımlarla Değerlendirilmesi". Acta Aquatica Turcica 17/1 (2021), 34-55. https://doi.org/10.22392/actaquatr.751773