Tortum Gölü'nün (Erzurum) bentik alg florasının mevsimsel değişimi

Mart 2002-Şubat 2003 tarihleri arasında Tortum Gölü’nün bentik alglerinin kompozisyonu, yoğunluğu ve mevsimsel değişimleri incelenmiştir. Elde edilen veriler 21 yıl önce yapılan araştırmanın sonuçlarıyla karşılaştırılmıştır. Bu araştırmada Navicula capitata var. hungarica (Grunow) Ross, Navicula cryptocephala Kütz., Cymbella affinis Kütz., Amphora ovalis (Kütz.) Kütz., Cocconeis placentula var. euglypta (Ehrenb.) Grunow, Nitzschia sublinearis Hust, Cyclotella krammeri Håk., Merismopedia elegans A. Braun epipelik alg florasında dominant taksonlar olmuştur. Yaz başında ve sonbaharda epipelik florada artış gözlenmiştir. Cymbella affinis, Cymbella lanceolata (Ehrenb.) Kirchner, Fragilaria capucina var. rumpens (Kütz.) Lange-Bert., Cocconeis placentula var. euglypta, Cyclotella krammeri epilitik alg florasında bol ve yaygın bulunan taksonlardır. Spirogyra aequinoctialis G. S. West ise sadece yaz aylarında epilitik florada çok bol olarak bulunmuştur. Bentik alg florasının, gölün organik maddelerle kirlenmesinden etkilendiği sonucuna varılmıştır.

Anahtar Kelimeler:

türler, Türkiye, ötrofikasyon, mevsimsel değişimler, flora

Seasonal changes of the benthic algal flora of Tortum Lake (Erzurum).

Seasonal changes of the benthic algal flora of Tortum Lake (Erzurum). Composition, density and seasonal changes of the benthic algal flora of Tortum Lake were studied between March 2002 and February 2003. The collected data were compared with the data collected 21 years ago. In this study, Navicula capitata var. hungarica (Grunow) Ross, Navicula cryptocephala Kütz., Cymbella affinis Kütz., Amphora ovalis (Kütz.) Kütz., Cocconeis placentula var. euglypta (Ehrenb.) Grunow, Nitzschia sublinearis Hust., Cyclotella krammeri Håk., Merismopedia elegans A. Braun were dominant in the epipelic algal flora. Increases of the flora density were observed during early summer and autumn. Cymbella affinis, Cymbella lanceolata (Ehrenb.) Kirchner, Fragilaria capucina var. rumpens (Kütz.) Lange-Bert., Cocconeis placentula var. euglypta, Cyclotella krammeri were the most abundant and common taxa in the epilithic algal flora. Spirogyra aequinoctialis G. S. West were found in high abundance in the epilithic algal flora only in summer months. We drew a conclusion that the benthic algal flora was affected from organically polluted of the lake.

Keywords:

species, Turkey, eutrophication, seasonal variation, flora,

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Aktan, Y., G. Aykulu, 2001. Algal communities living on the littoral sediments of Lake Iznik. I. U. Journal of Fisheries & Aquatic Sciences. 12: 31-48 (in Turkish).

Altuner, Z., 1984. A study on the epiphytic and epilithic algae of Tortum Lake. Atatürk Univ. Fen Fak. Dergisi, 1(4): 50-59(in Turkish).

Altuner, Z., G. Aykulu, 1987. A study on the epipelic algal flora of Lake Tortum. I. U. Journal of Fisheries & Aquatic Sciences, 1(1): 120-132 (in Turkish).

Altuner, Z., 1982. A study on the phytoplankton and benthic algae of Tortum Lake Atatürk Universitesi, PhD thesis, 83 p. (in Turkish).

Apha, Awwa, Wef., 1995. Standard Methods for the Examination of Water and Wastewater. 19th ed., APHA, AWWA, WEF, Washington, 1268 p.

Charles, D. F., 1985. Relationship between surface sediment diatom assemblages and lakewater characteristics in Adirondack Lakes. Ecology, 66(3): 994-1011.

DeNicola, D. M., E. Eyto, A. Wemaere, K. Irvine, 2004. Using epilithic algal communities to assess trophic status in Irish lakes. Journal of Phycolohy, 40: 481–495.

Gürbüz, H., E. Kıvrak, 2003. Seasonal variations of benthic algae of Kuzgun Dam Reservoir and their relationship to environmental factors. Fresenius Environmental Bulletin, 12(9): 1025-1032.

Halse, G.R., 1978. Some specific preparations, Phytoplantton manual. Printed by Page Brothers (Norwich) Lmd. UNESCO Paris, 136-142 pp.

Huber-Pestalozzi, G., 1961. Das Phytoplankton des Süßwassers, Systematik und Biologie, Teil 5, Thienemann, A., Chlorophyceae (Grünalgen), Ordnung Volvocales. Stuttgart, 744p.

James, M.R., I. Haves, M. Weatherhead, C. Stanger, M. Gibbs, 2000. Carbon flow in the littoral food web of an oligotrophic lake. Hydrobiologia, 444: 93-106.

Soininen, J., 2004. Benthic diatom community structure in boreal streams, Distribution patterns along environmental and spatial gradients. Helsinki, 46 p.

Kelly, M. G., B. A. Whitton, 1995. The trophic diatom index: a new index for monitoring eutrophication in rivers. J. Applied Phycology, 7: 433-444.

Kıvrak, E., H. Gürbüz, 2005. The benthic algal flora of Demirdöven Dam Resevoir (Erzurum,Turkey). Turk J Bot., 29: 1-10.

Kingston, J. C., R. L. Lowe, E. F. Stoermer, T.B. Ladewski, 1983. Spatial and temporal distribution of benthic diatoms in northern Lake Michigan. Ecology, 66: 1566-1580.

Komárek, J., B. Fott, 1983. Das Phytoplankton des Süßwassers, Systematik und Biologie, Teil 7. In: Huber-Pestalozzi, G. (ed.), Chlorophyceae (Grünalgen), Ordnung Chlorococcales. E. Schweizerbart’sche Verlagsbuchhandlung (Nägele u. Obermiller), Stuttgart, 1044 p.

Krammer, K., H. Lange-Bertalot, 1986. Süßwasserflora von Mitteleuropa. Bacillariophyceae, Band 2/1, 1. Teil: Naviculaceae, Berlin, 876 p.

Krammer, K., H. Lange-Bertalot, 1991a. Süßwasserflora vonMitteleuropa. Bacillariophyceae, Band 2/3, 3. Teil: Centrales,Fragillariaceae, Eunoticeae, Stuttgart, 576 p.

Krammer, K. H. Lange-Bertalot 1991b. Süßwasserflora von Mitteleuropa. Bacillariophyceae, Band 2/4, 4. Teil: Achnanthaceae, Navicula (Lineolatae) und Gomphonema, Stuttgart, 436 p.

Krammer, K., H. Lange-Bertalot, 1999. Süßwasserflora von Mitteleuropa. Bacillariophyceae, Band 2/2, 2. Teil: Bacillariaceae, Epithemiaceae, Surirellaceae, Berlin, 610 p.

Lange-Bertalot, H., 1979. Pollution and tolerance of diatoms as criterion of water quality estimation. Nova Hedwigia, 64: 285-304.

Müller, U., 1994. Seasonal development of epiphytic algae on Pharagmites australis (Cav.) Trin. ex Sten . in a eutrophic lake. Arch. Hydrobiol., 129: 83-88.

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. Int Revue ges Hydrobiol., 75: 317-338.

Nozaki, K., K. Darijav, T. Akatsuka, N. Goto, O. Mitamura, 2003. Development of filamentous green algae in the benthic algal community in a littoral sand-beach zone of Lake Biwa. Limnology, 4: 161–165.

OECD, 1982. Eutrophication of Waters. Monitoring, Assessment and Control. Organization for Economic Co-Operation and Development, Paris. 156 p.

Patrick, R., C.W. Reimer, 1966. The Diatoms of the United States. Acad. Sci. Philadelphia Monarg. Vol.-I, 688 p.

Patrick, R., C.W. Reimer, 1975. The Diatoms of the United States. Acad. Sci. Philadelphia Monarg. Vol.-II, 213 p.

Presscott, G.W., 1982. Algae of the Western Great Lake Area. Germany, Koengstein: Otto, 977 p.

Round, F. E., 1953. An investigation of two benthic algal communities in Malham Tarn, Yorkshire. Journal of Ecology, 41: 174-197.

Round, F. E., 1960. The epipelic algal flora of some Finnish Lakes. Arch Hydrobiol., 57(1/2). 161-178.

Round, F. E., 1961. Studies on Bottom-Living Algae in Some Lakes of the English Lake District: Part V. The Seasonal Cycles of the Cyanophyceae. Journal of Ecology, 49 (1): 31-38.

Round, F. E., 1984. The Ecology of Algae. Cambridge, 653 p. Stevenson, R. J., E. F. Stoermer, 1981. Quantitative differences between benthic algal communities along a depth gradient in Lake Michigan. Journal of Phycology, 17: 29-36.

Wetzel, R.G., 1983. Limnology. Philadelphia, 767 p. Wu J.T., 1999. A generic index of diatom assemblages as indicator of pollution in the Keelung River of Taiwan. Hydrobiologia, 397: 79-87.