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Öğe 3 tatlı su fitoplankton türünün (Chlorella vulgaris beij. 1890, Scenedesmus quadricauda (turpin) bréb. 1835 ve cyclotella meneghiniana kütz. 1844) gelişimi üzerine 5 farkli pestisitin (azinphos-methyl, malathion, parathion-ethyl, terbufos, trichlorfon) toksisitesi(Trakya Üniversitesi Fen Bilimleri Enstitüsü, 2009) Öterler, Burak; Kırgız, TimurBu çalışma için kullanılacak alg türlerinin belirlenmesi amacıyla, 2008 yılı içerisinde mevsimsel olarak Gala Gölü'nden fitoplankton örneklemesi yapılmıştır. Gölde yapılan araştırmalar sonucunda, Cyanophyta'ya ait 7, Chlorophyta'ya ait 49, Euglenophyta'ya ait 11, ve Bacillariophyta'ya ait 45 olmak üzere toplam 112 fitoplanktonik alg türü saptanmıştır. Çalışmanın niteliğine uygun olarak gölde hakim konumda bulunan 3 planktonik alg türü (Chlorella vulgaris, Scenedesmus quadricauda ve Cyclotella meneghiniana) deneylerde kullanılmak üzere seçilmiş ve bu 3 alg türüne ait saf kültürler ithal edilerek laboratuar deneylerinde kullanılmak üzere kültüre alınmışlardır. Ayrıca, fitoplankton örneklemesinin yapıldığı tarihlerle eş zamanlı olarak, Gala Gölü'nden alınan su örneklerinin organofosforlu pestisit analizleri yapılmış ve göl suyunda en yüksek miktarda bulunan pestisitler arasından 5 tanesi (Azinphos-Methyl, Malathion, Parathion-Ethyl, Terbufos ve Trichlorfon) bu çalışmada kullanılmak üzere belirlenmişlerdir. Alg kültürlerinin genel büyüme oranlarına bakıldığında, en yüksek değerlerin Chlorella vulgaris için 25. günde 6.461, Scenedesmus quadricauda için 30. günde 6.363 ve Cyclotella meneghiniana için ise 25. günde 3.044 olduğu saptanmıştır. Ayrıca, elde edilen bulguların tek yönlü ANOVA analizi ve Student-Newman-Keul's metoduna göre istatistiksel açıdan da değerlendirilerek doğrulukları kontrol edilmiştir. Çalışmada kullanılan pestisitlere, en dirençli organizmanın Cyclotella meneghiniana olduğu ve bunu Chlorella vulgaris ve Scenedesmus quadricauda'nın takip ettiği belirlenmiştir. Kullanılan pestisitlerin algler üzerine inhibe edici özelliklerine bakıldığında ise, Chlorella vulgaris için en etkili pestisidlerin sırasıyla Azinphos-Methyl > Trichlorfon > Terbufos > Parathion-Ethyl > Malathion şeklinde olduğu gözlenmiştir. Sıralamanın Scenedesmus quadricauda için Parathion-Ethyl > Trichlorfon > Azinphos-Methyl > Terbufos > Malathion şeklinde, Cyclotella meneghiniana içinse Azinphos-Methyl > Terbufos > Trichlorfon > Malathion > Parathion-Ethyl şeklinde olduğu kaydedilmiştir. Ayrıca, Gala Gölü genel karakterlerini ortaya çıkarmak amacıyla da fitoplankton ve organofosforlu pestisid örneklemesinin yapıldığı tarihlerle eş zamanlı olarak suyun fizikokimyasal analizleri de yapılmıştır. Su Kirliliği Kontrol Yönetmeliği kıta içi su kaynakları kalite kriterlerine göre genel olarak II. Sınıf Su Kalitesine sahip olduğu belirlenen gölün trofi durumunun mesotrofik karaktere yakın olduğu tespit edilmiştir.Öğe The Comparative Gut Content Analysis of Some Chironomidae Larvae Living in the Freshwaters at Northern Thrace Region of Turkey(2021) Aydın, Gazel Burcu; Öterler, Burak; Elipek, Belgin Çamur; Güher, HüseyinThe roles of larval chironomids in the food chain of both the lotic and the lenticecosystems are very important. On the one hand, chironomid larvae feeding onalgae, diatoms, rotting organic matter, plant, and animal residues also play animportant role in these systems as a source of food for other carnivores andomnivorous organisms. In this study, the gut contents of Cryptochironomusdefectus (Kieffer, 1913), Cladotanytarsus mancus (Walker, 1856), Polypedilumscalaenum (Schrank, 1803), Tanypus kraatzi (Kieffer, 1912) collected from thefreshwater ecosystems located in the northern parts of the Thrace region of Turkeywere analyzed to compare their feeding habits. As a result of the analysis, it wasdetermined that while plant fragments were dominant in C. defectus species in thegut content (44.3%), algae were dominant for C. mancus (44.7%), P. scalaenum(63.5%), T. kraatzi (65%). According to the results of the Shannon-Wiener (H')index species, diversity of the P. scalaenum was found to be the highest amongthe larvae (H'= 1.345). Also, according to the Bray-Curtis similarity index, themost similar types of gut contents were P. scalaenum and C. defectus (38%). Thislow rate indicated that the species have different food preferencesÖğe DAILY VERTICAL VARIATION IN PHYTOPLANKTON COMPOSITION OF A DRINKING WATER RESERVOIR (KADIKÖY RESERVOIR-EDİRNE) DURING SUMMER STRATIFICATION(2018) Öterler, BurakThis study is performed in August 2012 in Kadıköy Reservoir in Keşan district of Edirne. The deepest point of thereservoir when there is no water drown was chosen as the sampling station. Samples were taken from 6 different depths everythree hours during a 24 hour period. 65 phytoplanktonic algae taxa belonging to Chlorophyta (26 taxa), Bacillariphyta (18taxa), Euglenophyta (8 taxa), Charophyta (5 taxa), Cyanophyta (4 taxa), Miozoa (3 taxa) and Ochrophyta (1 taxa) wereidentified.Öğe Daily vertical variation in phytoplankton composition of a drinking water reservoir (Kadıköy reservoir-edirne) during summer stratification(Trakya Üniversitesi Fen Bilimleri Enstitüsü, 2018) Öterler, BurakThis study is performed in August 2012 in Kadıköy Reservoir in Keşan district of Edirne. The deepest point of the reservoir when there is no water drown was chosen as the sampling station. Samples were taken from 6 different depths every three hours during a 24 hour period. 65 phytoplanktonic algae taxa belonging to Chlorophyta (26 taxa), Bacillariphyta (18 taxa), Euglenophyta (8 taxa), Charophyta (5 taxa), Cyanophyta (4 taxa), Miozoa (3 taxa) and Ochrophyta (1 taxa) were identified.Öğe The Determination of Trophic Level of Küçükçekmece Lagoon Lake (İstanbul, Türkiye) by Using Some Environmental Variables with Indicator Benthic Macroinvertebrates Findings(2022) Aydın, Gazel Burcu; Gürevin, Cenk; Öterler, BurakIn this study, to determine the trophic level of Küçükçekmece Lagoon Lake, water and sediment samplings were performed at five selected stations seasonally during a year between 2014-2015. The water samples were analyzed to determine some environmental variables (water temperature, pH, conductivity, DO (dissolved oxygen), TDS (total dissolved solids), and salinity. NO3-N, NO2-N, SO4-2, PO4-3, SiO2, chlorophyll-a, TP (total phosphorus), and Secchi disc light permeability) and benthic macroinvertebrates were examined to determine indicator organisms in the sampled sediment material. Bray-Curtis Similarity Index was used to the observed environmental results to determine the similarities of the sampling stations. According to this, station 1 (St. 1) located in the center of the lake, and St. 5 located near the sea were found to be different from other sampling stations while the stations located near the creeks were found to have much more similar to each other. In addition, to determine the trophy level of the lake, Carlson Trophic State Index (CTSI) was used to the obtained some physicochemical results (Secchi disc permeability, total phosphorus, chlorophyll-a) and it was found that the lake showed a eutrophic character during all seasons. According to the result of sediment sampling, an average of 350 individuals per m2 (44.3 % belonging Polychaeta group; 29.5 % belonging Chironomidae group; 19.7 % belonging Oligochaeta group; 6.5 % belonging Bivalvia group) in a total of 6 benthic macroinvertebrate taxa (Bivalvia, Polychaeta, Tubificoides benedii (Oligochaeta), Tubificoides sp. (immature Oligochaeta), Limnodrilus hoffmeisteri (Oligochaeta), and Chironomus salinarius (Chironomidae) were determined. Thus, it is observed that the presence of some indicator species supported eutrophic conditions qualitatively. As a result of this study, it was determined that Küçükçekmece Lagoon lake going on to expose the increasing pollution load.Öğe Microcytis aeruginosa (kützing) kützing 1846 gelişimi üzerine ampisilin, gentamisin ve siprofloksasin antibiyotiklerinin etkileri(Trakya Üniversitesi Fen Bilimleri Enstitüsü, 2021) Manavoğlu, Doğan Can; Öterler, BurakBu çalışma kapsamında, Ampisilin, Gentamisin ve Siprofloksasin antibiyotiklerinin bir siyanobakteri türü olan Microcystis aeruginosa’nın gelişimi üzerindeki etkilerini tespit etmek amacıyla laboratuvar ortamında araştırmalar yapılmıştır. Bu amaç doğrultusunda, BG-11 besiyerinde üretilen kültürler, 23-25 oC'de, 50 ?molm-2s-1 ışık yoğunluğunda, 16/8 aydınlık/karanlık döngüsü altındaki iklim kabinine yerleştirilmiş ve deneyler aynı koşullar altında gerçekleştirilmiştir. Yapılan ön deneyler neticesinde antibiyotik miktarı siprofloksasin, ampisilin ve gentamisin 1024?gL-1 olacak şekilde başlatılarak %50 oranında dilüe şeklinde antibiyotik miktarları azaltılmıştır. Tüm deneyler 3 tekrarlı ve 24 kuyulu plakalarda mikrodilüsyon yöntemi ile yapılmıştır. Seçilen antibiyotiklerin M. aeruginosa kültürlerinin gelişimi üzerindeki etkilerini gözlemlemek amacıyla çalışma süresinde 3 günde bir örnek alınarak 15 gün boyunca spektrofotometrik hücre yoğunlukları, klorofil-a miktarları ve mikroskobik olarak hücre sayımları yapılmıştır. Çalışmanın sonunda, uygulanan en düşük dozlarda siprofloksasin için klorofil-a miktarının %52, hücre sayısının %36 oranında; ampisilin için klorofil-a miktarının %41, hücre sayısının %33 oranında ve gentamisin için klorofil-a miktarının %42, hücre sayısının %20 oranında azaldığı tespit edilmiştir. Bu çalışmada M. aeruginosa’ın gelişimini yavaşlatan antibiyotiklerin etki sırasına göre; siprofloksasin, ampisilin ve gentamisin oldukları belirlenmiştir.Öğe Multivariance analysis on the distribution of micro-macro elements and their derivates at Meriç River (Thrace Region, Turkey)(2020) Divrik, Menekşe Taş; Elipek, Belgin Çamur; Öterler, Burak; Kırgız, TimurMeriç River, called international water, is one of the most important river systems in Thrace. Asthe river is an open ecosystem to intensive anthropogenic impacts from settlements, agriculturaland industrial areas, monitoring its aquatic characteristics is very valuable in terms of maintainingits sustainable use. In particular, knowing the micro and macro element contents that play an important role on primary productivity in aquatic ecosystems will be very useful in predicting theeutrophication process. In this study some chemical analyzes (calcium, magnesium, chloride, nitrate nitrogen, nitrite nitrogen, sulphate, phosphate, cupper, iron, zinc) were carried out to determine the concentrations and distribution of some micro-macro elements and their derivates in Meriç River. Thus, it was aimed to determine the micro and macro element contents of different regions in the river, to compare the data with other studies in the region and to make suggestions onthe sustainable use of the river. For this aim, samplings were done selected from eight stationslocated in Meriç River at Thrace region of Turkey between January and December 2011. Chemicalanalyzes of Ca, Mg, Cl, NO3-N, NO2-N, PO4, SO4 in water samples taken from the sampling stations by the Ruttner water sampler at monthly intervals were carried out in the laboratory usingclassical and spectrophotometric methods. The multivariance analysis (Bray-Curtis Cluster Index)was used to evaluate the similarities of sampling stations in terms of seasonal averages of theseparameters. In order to determine the concentrations of some heavy metals (Cu, Fe and Zn), watersamples taken by Ruttner sampler and sediment samples taken by Ekman grab at seasonal intervalswere measured in flame atomic absorption spectrometry. The sampling stations were evaluatedalso statistically by using Bray-Curtis Cluster Index in terms of heavy metal contents of water andsediment. According to the result of statistical analysis, it was determined that the locations atlower Meriç River area are different from the upper area. Especially it was observed that the sampling locality after Ergene River added to Meriç River has very low quality level in terms of somechemical contents. It is thought that this may be due to the agricultural and industrial pollutionload carried by the Ergene River. Therefore, it has been concluded that these locations must beevaluated in the studies of physicochemical evaluation of Meriç River.Öğe New Records for the Turkish Freshwater Algal Flora in Twenty Five River Basins of Turkey, Part III: Miozoa, Haptophyta(2021) Sevindik, Tuğba Ongun; Soylu, Elif Neyran; Demir, Ayşe Nilsun; Çelekli, Abuzer; Sömek, Haşim; Öterler, Burak; Coşkun, TolgaTurkish lakes have different morphometry and hydrology as a result of different climate types and noticeable altitude differences, which provide different habitats for algal diversity. In the last 40 years, the total number of algae taxa in the flora of Turkey has increased due to the studies on phytoplankton taxonomy and ecology. This study aims to describe new planktonic algal taxa for the Turkish freshwater algal flora. A total of 63 Miozoa and 2 Haptophyta taxa were determined in the project conducted from 2017 to 2019 in lakes of 25 river basins of Turkey. Our study was done as a part of the Project, namely “Establishment of Reference Monitoring Network in Turkey”, financially and technically supported by the Ministry of Agriculture and Forestry, Directorate General for Water Management. In each lake, phytoplankton was sampled with water samplers from three depths (surface, middle, and bottom) of the euphotic zone, and then the water samples taken from these three depths were mixed for obtaining subsamples. Plankton net with a pore diameter of 50 µm was also used for sampling. Identification of the algal taxa was performed with various compound and inverted microscopes in many laboratories. During this study, 26 Miozoa and 2 Haptophyta taxa were found as new records for the freshwater algal flora of Turkey.Öğe New Records for the Turkish Freshwater Algal Flora in Twenty Five River Basins of Turkey, Part IV: Ochrophyta(2021) Demir, Ayşe Nilsun; Öterler, Burak; Sömek, Haşim; Sevindik, Tuğba Ongun; Soylu, Elif Neyran; Karaaslan, Yakup; Çetin, TolgaTurkish lakes have different morphometric and hydrological features as a result of different climates and noticeable altitude differences in Turkey that are necessary conditions to occur different habitats for algal diversity. The total number of algae taxa in the flora of Turkey has increased due to the growing number of studies on phytoplankton taxonomy and ecology in the last 40 years. This study aims to describe new planktonic algal taxa for the Turkish freshwater algal flora. A total of 56 Ochrophyta taxa were determined in this study, conducted from 2017 to 2019 in lakes lies in 25 river basins of Turkey. In 275 lakes, samples of phytoplankton were collected with water samplers from three depths (surface, middle, and bottom) of the euphotic zone, and then subsamples were obtained by mixing the water samples taken from these three depths. The plankton net with a pore diameter of 50 µm was also used for collecting samples of phytoplankton. The algal taxa was identified by using different types of compound and inverted microscopes in many laboratories. 30 Ochrophyta taxa of which were determined in this study, were reported as a new record for the first time for the freshwater algal flora of TurkeyÖğe New Records for the Turkish Freshwater Algal Flora in Twenty Five River Basins of Turkey, Part V: Cryptophyta(2021) Soylu, Elif Neyran; Demir, Ayşe Nilsun; Coşkun, Tolga; Solak, Cüneyd Nadir; Çelekli, Abuzer; Sömek, Haşim; Öterler, BurakThere is an increasing number of taxonomic and ecologic studies on phytoplankton, one of the biological quality elements according to the EU Water Framework Directive, in Turkey day by day. This study was carried on from 2017 to 2019 in 275 lakes lies in 25 river basins of Turkey with the aim of examining the taxonomy and biological diversity of the Cryptophyta group. It was the fourth part of the Project, entitled “Establishment of Reference Monitoring Network in Turkey”, financially and technically supported by the Ministry of Agriculture and Forestry, Directorate General for Water Management. In each lake, phytoplankton was sampled with water samplers from three depths (surface, middle, and bottom) of the euphotic zone, and then the water samples taken from these three depths were mixed for obtaining subsamples. The algal taxa was identified by using different light and inverted microscopes in many laboratories. A total of 24 Cryptophyta taxa were identified in the study. 9 of the identified Cryptophya taxa were presented as new records for the freshwater algal flora of TurkeyÖğe New Records For the Turkish Freshwater Algal Flora in Twenty Five River Basins of Turkey, Part Vi: Charophyta(Trakya Üniversitesi, 2021) Maraşlıoğlu, Faruk; Soylu, Elif; Demir, Nilsun; Çelekli, Abuzer; Sömek, Haşim; Öterler, Burak; Çetin, TolgaAlthough planktonic algae are a basic component of freshwater ecosystems, studies on their diversity and species distribution are still not in satisfactory numbers. This study aims to contribute to Turkish freshwater algal flora particularly with the new records reported. A total of 158 Charophyta taxa were determined in the study conducted from 2017 to 2019 in 25 river basins of Turkey. In this study, while the highest Charophyta taxon was found in Sakarya and Batı Akdeniz basins with 50 and 42 taxa, respectively, Burdur basin was the only basin where we did not find the Charophyta species. The highest Charophyta diversity was observed in Girdev Lake (Batı Akdeniz basin) and Işık Dağı Karagöl Lake (Sakarya basin) among the lakes of Turkey’s 25 river basins. Thirty-one of these Charophyta taxa represent new records for the freshwater algal flora of Turkey. Of these, 13 species are commonly distributed, while 18 species have rare distribution areas. Morphology, ecology, and distribution of each taxon were also discussed in details.Öğe The phytoplankton composition of Kadikoy dam lake (Keşan-Edirne)(Trakya Üniversitesi Fen Bilimleri Enstitüsü, 2013) Öterler, BurakThis study was carried out between June 2011 and May 2012 at different depths of three stations in Kadıköy Dam Lake in the Turkish Thrace. A total of seventyfour phytoplanktonic algal taxa belonging to Chlorophyta, Ochrophyta (Diatoms), Cyanobacteria, Euglenophyta, Charophyta, and Dinophyta were recorded during the study period. Members of Chlorophyta were found to constitute the dominant group in the lake. Some physical and chemical water quality parameters and trophic state of lake water were determined.Öğe Qualitative and Quantitative Examination of Algal Flora in the Gut Content of Tanypus punctipennis Meigen, 1818(2018) Öterler, Burak; Aydın, Gazel Burcu; Elipek, Belgin ÇamurLarval chironomids feed on algae, diatomae, detritus, decaying plant andanimal fragments. The larvae in turn are food for other carnivore and omnivoreanimals. Thus, larval chironomids have a very important role in the aquatic foodcycle. In this study, the algal flora in the stomachs of Tanypus punctipennis, which isknown as a very common species in Turkish Thrace, was examined in terms ofqualitative and quantitative factors. It was found that Bacillariophyta was thedominant group with 42 taxa in the stomach of T. punctipennis. It was followed byCyanophyta with 3 taxa, Euglenophyta with 6 taxa, Chlorophyta with 4 taxa,Carophyta with 2 taxa, and Rhodophyta with 1 taxa.Öğe Seasonal Change of Physicochemical Properties of Kayalıköy Reservoir (Kıklareli/Turkey) and Determination of Water Quality(2020) Güher, Hüseyin; Öterler, BurakThis study was carried out in the Kayalıköy reservoir (Kırklareli, Turkey), that isused for agricultural irrigation and aquaculture and to provide drinking anddomestic water supply of Edirne province. The study was performed at 3 stationsdetermined in the reservoir during a year from May 2018 to April 2019. The watersamples were taken with Ruttner water sample bottles from 15 to 20 cm belowthe water surface. Water temperature, Secchi disk depth, conductivity, pH, anddissolved oxygen were measured on-site simultaneously with the sampling time.Other physicochemical parameters were analyzed in the laboratory. A total of 43physicochemical parameters were measured in the Kayalıköy reservoir. Analysisresults obtained are compared with Regulation on Modification of Surface WaterQuality Management (RSWQM) and Regulation on the Quality and Treatment ofWater Provided for Drinking Water (RDWQ). According to the average values ofthe analysis results the water quality in Kayalıköy reservoir determined generallyto be Class I and A1 water. In conclusion, Kayalıköy reservoir has water suitablefor drinking, agricultural irrigation, and aquaculture and was classified as havingoligomesotrophic character.Öğe Seasonal Distribution of Rotifera Compositions and Abundance in Kayalıköy Reservoir (Kırklareli/Turkey)(2020) Güher, Hüseyin; Öterler, BurakThis study was carried out to determine the diversity, abundance seasonal distribution of Rotifera in Kayalıköy reservoir.Rotifera and water samples were collected monthly intervals from May 2018 to April 2019 in three different stations in thereservoir and some environmental parameters were also measured. A total of 40 species from Rotifera were determined inthe reservoir. The quantitative evaluation of the Rotifera samples were found an average of 27938 ± 18992 ind/m3in theKayalıköy reservoir. The maximum numbers of Rotifera in the reservoir were found in autumn (42966 ind/m3) and at 2ndstation (33487 ind/m3), the minimum numbers were recorded in winter (1474 ind/m3) and at 1st stations (24850 ind/m3). Themost common species in the reservoir were found Brachionus quadridentatus, Keratella cochlearis, K. quadrata, Synchaetapectinata, Asplanchna priodonta, Polyarthra vulgaris and Filinia longiseta. According to the water quality standards ofTurkey, the water quality of Kayalıköy reservoir was found Class I and A1. When we examined the species identified in thereservoir, the distribution of the individuals that make up the Rotifera fauna and physicochemical parameters as a whole, ithas been concluded that Kayalıköy reservoir has water suitable for drinking, agricultural irrigation and aquaculture and it’sclassified as oligomesotrophic character.Öğe A short-term study on the phytoplanktonic and epilithic algae of Arda River (Edirne, Turkey)(2016) Öterler, BurakTunca ve Ergene Nehirleriyle beraber Meriç Nehri'nin en büyük kollarından biri olan Arda Nehri, Bulgaristan'da doğar ve Edirne il merkezi sınırları içinde Meriç Nehri ile birleşir. Nehrin Türkiye sınırları içinde kalan kısmı ise sadece 500 metredir ve örnekleme istasyonu bu bölgeden seçilmiştir. Bu çalışma ile Arda Nehri'nin yaz aylarındaki planktonik ve bentik alg türlerinin kompoziyonunu ve nicel gelişimi belirlemek amacıyla 2011 yılında yapılmıştır. Çalışma sonunda Bacillariophyta'ya ait 31 taxa, Chlorophyta'ya ait 18 taxa, Euglenophyta'ya ait 5 taxa ve Cyanophyta'ya ait 3 taxa olmak üzere 4 divisioya ait toplam 57 tür tespit edilmiştir. Çalışma sonucunda planktonik olarak Pediastrum sp., Cyclotella meneghiniana ve Cymatopleura sp., epilitik olarak ise Cymatopleura sp., Fragilaria sp. ve Pinnularia sp. türleri nehrin hakim organizmaları olmuştur. Canonical Correspondance analizi sonuçlarına göre çevresel değişkenler ile planktonik ve bentik algler arasındaki ilişkiler tespit edilmişlerdir.Öğe SPATIAL AND TEMPORAL DISTRIBUTION OF PHYTOPLANKTON IN LAKE GALA (Edirne/TURKEY)(2015) Öterler, Burak; Albay, Meriç; Çamur, Belgin Elipek; Güher, Hüseyin; Kırgız, TimurBu çalışma Meriç deltasında Gala Gölü Milli Parkı içerisinde bulunan ve sığ bir göl olan Gala Gölü'nde belirlenen 4 istayonda Mart 2004-Şubat 2005 tarihleri arasında yapılmıştır. Gölden alınan su örneklerinde fitoplanktonun belirlenmesinin yanı sıra bazı fizikokimyasal analizler de yapılmıştır. Çalışma süresince 5 divizyoya ait toplam 112 taxa gözlemlenmiştir. En fazla tür sayısının 47 tür ile Chlorophyta'ya ait olduğu gölde Diatomlar ortalama 670011 hücre L-1 ile en çok hücre sayısına sahip grup olmuştur. Göl fitoplanktonunun mevsimsel süksesyonunda genel yapı Haziran ayında Chlorophyta, Eylül ayında ise Cyanophyta hakimiyeti şeklindedir. Bu ayların dışında tüm örnekleme periyodu boyunca Diatomlar gölün hakim organizmaları konumundadır. Bunun yanısıra sonbahar aylarında hafif bir Microsystis spp. çoğalmasının meydana geldiği gölde fitoplanktonun yıl boyunca değiştiği gözlemlenmiştir. Daha önceki veriler ile karşılaştırıldığında Gala Gölü fitoplanktonunda nitel ve nicel olarak farklılıklar tespit edilmiştir.Öğe Spatial and temporal distributıon of phytoplankton in Lake Gala (Edirne/Turkey)(Trakya Üniversitesi Fen Bilimleri Enstitüsü, 2015) Öterler, Burak; Albay, Meriç; Çamur Elipek, Belgin; Güher, Hüseyin; Kırgız, TimurThis study was performed from March 2004 to February 2005 in 4 stations in Gala Lake, a shallow lake located inside Gala Lake National Park in Meriç Delta. Water samples were taken from the lake in order to determine the phytoplankton present in the lake and to perform physicochemical analysis. A total of 112 taxa from 5 divisio were identified during the study period. Chlorophyta was the most diversed group in the lake with 47 taxa and diatoms were found to have the highest cell counts with a mean value of 670011 cell L-1. The general pattern of seasonal succession in phytoplankton of the lake was represented with Chlorophyta in June and with Cyanophyta in September and Diatoms were the dominant group of the lake in all other months. A spatial heterogeneity was observed in the lake where a slight Microsystis spp. increase occurred in early autumn months. Comparison with former phytoplankton data showed distinct differences in terms of the qualitative and quantitative composition of the phytoplankton community of Lake Gala, which indicates lake deterioration.Öğe Tunca nehri fitoplanktonu ve su kalitesi ile olan ilişkilerinin incelenmesi(Trakya Üniversitesi, 2003) Öterler, Burak; Kırgız, TimurÖZET Tunca Nehri planktonik alg biyomasının mevsimsel değişimi ve bu değişimi etkileyen bazı fızikokimyasal parametreler ile su kalitesi parametrelerinden koliform bakteriler Haziran 2002-Haziran 2003 tarihleri arasında seçilen beş istasyonda incelendi. Araştırma süresince nehir suyunda tespit edilen 146 taksondan 81 tanesi Chlorophyta'ya, 45 tanesi Bacillariophyta'ya, 13 tanesi Euglenophyta'ya ve 7 tanesi de Cyanopyhta'ya ait türlerden oluşmuştur. Ortalama planktonik alg biyoması 1663 u.gr/1 olarak saptanmış ve Bacillariopyhta %69.85 ile baskın grubu oluştururken %23 ile Chloropyta ikinci derecede baskın grup olarak tespit edilmiştir. Diğer gruplar ise daha düşük oranlarda temsil edilmişlerdir. Bacillariopyhta' dan Cyclotella meneghiniana (Kütz.), Melosıra varians (Agardh), Synedra ulna (Ehr.), Pediastrum duplex (Meyen), Scenedesmns quadricauda (Hod.) ve Coelastrum sp. florada baskın taksonlan oluşturdu. Araştırma periyodu içinde biyomasın istasyonlara ve aylara göre değişimi büyük farklılıklar göstermiştir. En yüksek biyomas değeri 5 Ağustos 2002 tarihinde yapılan örneklemede 10462 jj.g/1 ile 3. istasyonda ve en düşük biyomas değeri de 30 Ocak 2003 'te 242 u.g/1 ile 2. istasyonda kaydedildi. Nehire fosfor, azot ve diğer besin tuzlarının girişi genel olarak tarımsal alanlardan ve yerleşim alanlarından gelen atık sulardan kaynaklanmaktadır. Atıkların neden olabileceği olası istenmeyen etkilerin önüne geçebilmek ve Tunca havzasının su kalitesinin gelişimi için sınır ötesi nehir yönetimine ihtiyaç vardır. Anahtar Kelimeler: Planktonik Algler, Tunca Nehri, Biyomas, Nehir Yönetimi.
