Tahir Atici

Tahir Atici
Gazi University · Department of Biology Education

Dr.

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63
Publications
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June 1993 - present
Gazi University
Position
  • Professor

Publications

Publications (63)
Article
Full-text available
In this study, wild-type microalgae species isolated from Porsuk river (Central Anatolia, Turkey) investigated as energy production feedstock and carbon dioxide sink. The obtained experimental data have been used for energy evaluation of the whole process and size estimation of large scale microalgae plant. Growth rate, CO2 mitigation rate, lipid,...
Article
Full-text available
Algae samples were collected from the Central Anatolian Region, including lakes and dam lakes. The algae, which were isolated and grown in a BG-11 medium, were later identified. A total of 17 microalga species have been isolated and cultured from the Central Anatolian Region freshwater resources. The Gazi University Microalgae Culture Collection (G...
Article
Full-text available
The Meriç River is one of the longest rivers of the Balkans and the Tunca River is the most significant tributary of the Meriç River. In the present study, the epipelic diatoms of the Meriç and Tunca Rivers were investigated and the water quality was evaluated from a physicochemical and biological perspective. Epipelic (EPP) diatoms were collected...
Book
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This book is the first source of both the freshwater and marine algal flora of Turkey. In total, 3690 taxa (species and infraspecies level) were recorded.
Article
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In this study, the effect of adding microparticles of glass as a cell disruption enhancer to maximize the extracted lipid from wild-type microalgae Synechocystis and Chlorella sp. has been investigated. A general factorial design approach at different levels has been implemented to evaluate the effectiveness of size and quantity of glass particles...
Article
Full-text available
Morphological features are not sufficient for species characterization in microalgae. There are many possibilities for existing characters. Recently, molecular techniques have been used in many areas and this technique increasing the reliability of the work done. The general purpose of the study is to compare Cyanobacteria and Chlorophyta species u...
Article
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In this study which is the first attempt to systematically identify algae of eighteen freshwater high mountain glacier lakes ecosystems were investigated. Samples were gathered from the lakes between August 2011 and October 2012. Secondly, some parameters of physical and chemical water quality (such as temperature, dissolved oxygen, pH, and electri...
Article
Full-text available
In the present study, diatom flora of Seydisuyu Stream Basin (Turkey) was investigated and the water quality of the system was evaluated in a statistical and biological view. Epipelic (EPP), epilithic (EPL) and epifitic (EPF) diatoms were seasonally collected from 12 stations in 2012 along the Seydisuyu Stream Basin and some physical and chemical w...
Article
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Pedagogical Formation (Education) Certificate Program (PFSP) is a program in Turkey that has opened for students who are attending or have graduated from faculties of science are granted the right to become teachers upon completing their undergraduate program. Actually the students who are graduated from education faculties has the right of becomin...
Article
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The study of diatoms is necessary because they are the sources of oxygen in rivers, and also constitute the basic primary productivity chain and are used in determining water pollution levels. However, in this study some large rivers of Turkey and Iran were compared in this respect and it was thought that the spread of diatom species would contribu...
Article
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It is widely accepted that learning-science-by-doing and/or facilitating meaningful experience is preferred over rote memorization in the science classrooms. To this end, this study shows that using the computer-based digital experimental tools in the biology laboratory can function as activities that can facilitate their learning to be more effect...
Article
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In this study, the distribution and seasonal variation of the algal flora and some environmental parameters in the travertines and thermal water springs in Pamukkale-Denizli have been investigated between September 2010 and August 2011. For this purpose, a number of stations have been designated in the travertines, water channels, pools and ponds,...
Article
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In recent years, the concept of Technological Pedagogical Content Knowledge has emerged as a result of changes taking place in the process of teaching by the introduction of technological tools and equipment. The idea of this was described by Mishra and Koehler and builds on the core of Shulman’s Pedagogical Content Knowledge through the inclusion...
Article
Full-text available
In the present study; non – silica algae of Seydisuyu Stream Basin were investigated and Cluster Analysis (CA) was applied to detected biological data in order to classify the stations in terms of algae floras. For this purpose, epipelic (EPP), epilithic (EPL), epifitic (EPF) and planktonic algae samples were collected seasonally from 12 stations i...
Article
Full-text available
Özet: Su kirliliğinin ve fitoplanktonik alg florasinin Bayindir Baraj Gölü'nde kontrolü. Bu çalişmada Bayindir baraj gölü'nün bir plankton kepçesi ile toplanmiş olan fitoplanktonik algleri Mart 2003 ve Aralik 2003 arasinda incelendi. Toplam 76 fitoplankton türü saptandi. Bunlarin 13'ü Cyanophyta, 17'si Chlorophyta, 2'si Dinophyta, 6'si Euglenophyta...
Conference Paper
Full-text available
Bu araştırmanın amacı, ülkemizde ortaöğretim okullarında uygulanmakta olan biyoloji öğretim programının mesleki ve teknik lise (MTL)’lerde görevli yönetici, öğretmen ve öğrenci görüşlerine göre değerlendirilip taslak bir program ortaya koymaktır. Araştırmamızda MTL’lerde görevli yönetici, öğretmen ve öğrencilerin mevcut biyoloji öğretim programı ha...
Article
Full-text available
A new species, Trochiscia hamzaoglui Atici sp. nova, determined from freshwater habitat, Kesik-k?pru Dam Lake on the Kizilirmak River (Kirsehir, Central Anatolia), and the sample was taken from plankton. This new species was first found in the study of algal samples from the area. Light microscope indicated a clear relationship with the species in...
Article
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In the present study; algae of four freshwater lentic ecosystems including Mogan (Ankara), Karagöl (Ankara), Abant (Bolu) and Poyrazlar (Sakarya) Lakes (Turkey) were investigated. Samples were collected between the dates of October – November 2012 and in March – April 2013. Some physical and chemical water quality parameters (temperature, pH, disso...
Conference Paper
Full-text available
Turkey has 70% of the total boron reserve of the world and most important borate deposits of Turkey is located in the Seydisuyu Stream Basin (Eskişehir). The aim of this study was to evaluate the natural and anthropogenic effects on the population density of green algae of the region by using some of environmental characteristics and statistical te...
Conference Paper
Full-text available
The aim of this study was to evaluate the environmental effects on the population density of blue – green algae in the Seydisuyu Stream Basin (Eskişehir) by using some statistical techniques. For this purpose, biotic and abiotic samples were collected seasonally from twelve stations selected on the Seydisuyu Stream Basin in 2012. Total of 9 physioc...
Article
This study was carried out between April, 2002 and April, 2003 at four stations in Mamasin Dam Lake in the Central Part of Anatolian Region of Turkey. Sixty phytoplanktonic algal taxa were recorded at these stations. These were consisting of species belonging to divisions of Ochrophyta (=Bacillariophta), Chlorophyta, Charophyta, Cyanobacteria and E...
Article
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In this investigation, internet access opportunities, frequency and the purpose of internet use of biology teachers in Turkey are determined and their behavior and view of internet use in biology lessons are introduced by using scaning model. Problems that the teachers encountered when using internet during teaching process and their solution offer...
Article
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Variations in the phytoplankton of Zayandeh-Rood Dam Lake were studied seasonally from September 2005 to August 2006 at 4 different stations. A total of 112 species and 53 genera belonging to 6 divisions were identified. The species belonging to Bacillariophyta, Chlorophyta, Cyanophyta, Euglenophyta, and Dinophyta were found frequently. Chrysophyta...
Article
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Beysehir and Mogan Lakes are two shallow Lakes that are under environmental protection status. Phytoplanktonic dominant algae determined in Beysehir Lake were Oscillatoria sp., Cladophora sp., Achnanthes sp., Gomphonema sp., Navicula sp., Cosmarium sp., Cymbella sp., Fragilaria sp., Oocystis sp., Spirogyra sp., Diatomae sp., Microcystis sp. and Sta...
Article
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ÖZ Bu çalışma, öğretmenlik mesleği dışında kamu kurumlarında görev yapan OFMAE (Ortaöğretim Fen ve Matematik Alanlar Eğitimi) bölümü mezunlarının lisans bilgilerinin günlük yaşantılarına etkisini araştırmak amacıyla yapılmıştır. Araştırmada tarama modeli kullanılmış olup, nitel araştırma tekniği olan görüşme yöntemi uygulanmıştır. Veri toplama arac...
Article
Full-text available
Gökçekaya Dam is one of the dams located on the Sakarya River (Eskişehir) in Turkey and is approximately 38years old. No study regarding to the water quality of the dam lake has been hitherto made. This study aimed at determining the seasonal variations with physical, chemical, and biological parameters of the water quality of the dam lake. Depth-w...
Article
Full-text available
A new species, Trochiscia anatolicum, is described from a fresh water habitat, Dam Lake in the middle Anatolian region. This new taxon was first found on examination of algal samples from Kesikkopru Dam Lake. Light microscopes indicate a clear relationship with species in the genus Trochiscia. Some of the characteristic features of the new taxon in...
Article
Full-text available
In order to determine algal species adapted to pollution, species collected from four different habitats (Epipelic, Epiphytic, Epilitic and Plankton) in areas in where branches of Ankara stream connect to Ankara stream were examined. A total of 151 taxa belong to four divisions (Bacillariophyta, Chlorophyta, Cyanophyta and Euglenophyta) were identi...
Article
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Dams built to supply electricity, irrigation and fresh water, change the characteristics of the region they are located. The ecological, limnological characteristics and the quality of water in the dam reservoir deteriorate with time. In this study, the physicochemical, toxicological and ecological parameters of Gökçekaya Dam Lake's water, which is...
Article
Full-text available
The shoreline benthic diatoms of Asartepe Dam Lake were identified from different habitats (epipelic, epiphytic, and epilithic) at 7 sampling stations between April 2003 and June 2004. In the investigation, a total of 93 taxa were identified. Of those, Cymbella affinis Kütz., Navicula radiosa Kütz., Ulnaria ulna (Nitzsch) Compère, Pinnularia boreal...
Article
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The ethanol extracts from the fresh-water algae; Chara hispida L., Cladophora glomerata (Dilw.) Kütz, C. fracta (Dilw.) Kütz, Spirogyra gratiana Transeau, Mougeotia sp. (C.A. Agardh), Vaucheria sessilis (Vauch.) De Candolle, Geminella mutabilis (Breb.) Wille, the fresh-water plants; Ranunculus rionii Lagger and Ceratophyllum demersum L., as well as...
Article
Crude extracts prepared from fresh-water macroalgae, Cladophora fracta (Dilw.) Kütz, C. glomerata (Dilw.) Kütz, Spyrogyra gratiana Link., and Maugeotia sp. (C.A. Agardh) Wittrock, along with two aqueous plants, Elodea canadensis Michx. and Ranunculus rionii Lagger have been investigated for their antimycobacterial activity. The results of the crude...
Article
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To evaluate the effects of chlorella crude extract (CCE) on intestinal adaptation in rats subjected to short bowel syndrome (SBS). Wistar rats weighing 230-260 g were used in the study. After anesthesia a 75% small bowel resection was performed. Rats were randomized and divided into groups. Control group (n = 10): where 5% dextrose was given throug...
Article
Oscillatoria sp. H1 (Cyanobacteria, microalgae) isolated from Mogan Lake was used for the removal of cadmium ions from aqueous solutions as its dry biomass, alive and heat-inactivated immobilized form on Ca-alginate. Particularly, the effect of physicochemical parameters like pH, initial concentration and contact time were investigated. The sorptio...
Article
Full-text available
Accumulation of heavy metals (Cd, Pb, Hg, Cr) in water and plankton of Sar?yar Dam Lake (SDR) was seasonally studied from April, 2000 to December, 2004. In addition, seasonal changes in phytoplankton and zooplankton populations and species abundance were also determinate. Some physio-chemical parameters of water and their correlation with heavy met...
Article
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Agar is popularly used as gelling agent to obtain in vitro culture of prokaryotic and eukaryotic microalgae. Exclusive use of agar is resulting in over exploitation of its resources and makes it essential to look for alternative and cheap sources. The study reports in vitro culture of prokaryotic microalgae (Cyanobacteria) Chroococcus limneticus an...
Article
Microalgae are a valuable environmental and biotechnological resource, and the aim of this paper is to explore the use of in vitro technologies in the conservation and sustainable exploitation of this remarkable group of organisms. Microalgae are sensitive indicators of environmental change and, as the basis of most freshwater and marine ecosystems...
Article
Full-text available
Sixteen extracts prepared with petroleum ether and ethanol from the capitula obtained from eight Helichrysum species including H. armenium subsp. araxinum, H. armenium subsp. armenium, H. arenarium, H. pallasii, H. stoechas subsp. barrelieri, H. sanguineum, H. plicatum subsp. plicatum and H. graveolens (Asteraceae) growing in Turkey were screened f...
Article
Full-text available
In order to determine the shore algae, excluding Bacillariophyta of the Asartepe Dam Lake, were observed in the samples taken from different habitats (Epipelic, Epiphytic, Epilitic). Those samples took from 7 stations between April 2003 and June 2004. In the investigation, a total of 95 taxa were identified. Of those, 55 belong to Chlorophyta, 23 t...
Article
The ethanolic extracts of a number of Turkish freshwater macrophytes (Potamogeton perfoliatus, Ranunculus tricophyllus and Cladophora glomerata) and marine macroalgae (Dictyota dichotoma, Halopteris scoparia, Posidonia oceanica, Scinaia furcellata, Sargassum natans and Ulva lactuca) were assayed for their in vitro antiprotozoal activity. Trypanosom...
Article
The phytoplanktonic algae were determined in samples taken from 7 different locations at the Sarιyar Dam Reservoir (SDR) from March 1996 to June 1997. The seasonal variation of phytoplankton and their chlorophyll a were determined and contents were discussed in relation to the physical and chemical parameters of the water. The divisions Bacillariop...
Article
Full-text available
In this study the benthic algal flora of Lake Abant were investigated in samples collected from three different habitats (epipelic, epiphytic and epilytic), from four chosen stations, between January 1997 and November 1997. The benthic algal flora of Lake Abant composed of 138 algae species belong to Bacillariophy ta, Chlorophyta, Cyanophyta, Eugle...
Article
Full-text available
Prokaryotic and eukaryotic microalgae produce a wide array of compounds with biological activities. These include antibiotics, algicides, toxins, pharmaceutically active compounds and plant growth regulators. Toxic microalgae, in this sense, are common only among the cyanobacteria and dinoflagellates. The microalgal toxins is either important as ma...
Article
Full-text available
Z ABSTRACT In this study, up to know teaching methods that have been used for biological education in secondary school have been studied by teachers. Research related to biology education has been compared by using inquiry testing. As a result of this testing, the most effective methods which have more influence on the student accomplishment have b...
Article
The fatty acid composition of the lipoid extracts of four marine alga species, Halopteris scoparia (L.) Sauvagau, Scinaia furcellata L., Sargassum natans (L.) J. Meyer, Padina vickersiae Hoyt, and the sea grass Posidonia oceanica L. as well as six freshwater alga species, namely Cladophora fracta (Dilw.) Kutz, C. glomerata (Dilw.) Kutz, Zygnema pec...
Article
Five species of the marine brown-algae, namely Halopteris scoparia (L.) Sauvagau, Padina vickersiae Hoyt, Dictyota dichotoma (Huds) Lam., Scinaia furcellata L., and Sargassum natans (L.) J. Meyer, a species of the marine green-alga, Ulva lactuca L., a species of the sea grass, Posidonia oceanica L., six species of fresh-water green-algae, namely Va...
Article
Full-text available
Nineteen new records of Turkish freshwater algae were determined in a study of the phytoplankton from Sariyar dam reservoir. One of these species was from the Cyanobacteria, 14 were from the Chlorophyta, three were from the Euglenophyta and one was from the Heterokontophyta.
Article
Full-text available
In this study, algae were isolated from salty soils around Salt Lake. The algae, which were isolated and grown in BG-11 medium, were later identified. The corrolation of algae with physical and chemical properties of soil were determined. The species of genera with a very high salt tolerance were Chroococcus, Nostoc, Phormidium, Lyngbya, Spirulina,...
Article
Full-text available
The diatoms of Çoruh River had been studied in samples, which were taken from different habitats (epipelic, epiphytic, epilithic, planktonic), from November 1994 to August 1996. A total of 106 taxa had been recorded in Çoruh River and 80 photographs of diatoms from the examined material have been given in 8 figures. Genera Nitzschia which has been...
Article
Full-text available
Türkiye'nin en önemli su potansiyellerinden biri olan Sakarya Nehrinde; Ankara Çayı ve Porsuk Çayı gibi kir-lenmiş suların nehre karıştığı bölgeden alınan örneklerde bulunan ve sayıca fazla olan alg türleri tespit edilmiştir. Bunların suyun fiziksel ve kimyasal özellikleriyle aralarındaki bağ oluşturulmaya çalışılarak Sakarya Nehrinde kirliliğe tol...
Article
Full-text available
In this study it is aimed at determining the opinions of pre-service science teachers and in-service science teachers who are using science text books prepared by the Ministry of Education in 2002 as a basic course book for 6 th , 7 th and 8 th grades in their classes from the point of biology subjects, in terms of scientific content, visual compon...
Article
On the Sakarya River which is öne of the importants rivers of Turkey, has been determined innumerous living kinds of algae in the samples taken from the part where polluted water such as Ankara brook and Porsuk brook mixed with the Sakarya River. it has also beenfound out that there are indicator algae types that are tolerant to pol- lution in the...

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Projects (2)
Project
Determining biodiversity and water quality in rivers and lakes, measures to be taken against pollution levels and pollution. Protection of water resources. Sustainable water management.