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ANNOTATED CHECKLIST ON DIATOMS FROM LAKE OHRID

ANNOTATED CHECKLIST ON DIATOMS FROM LAKE OHRID. A. Miho a * , H. Lange-Bertalot b a Department of Biology, Faculty of Natural Sciences, Tirana University, Albania. Tel.: +(355)4.225454 or 227669, fax: +(355)4.222839, e-mail: amiho@icc-al.org

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ANNOTATED CHECKLIST ON DIATOMS FROM LAKE OHRID

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  1. ANNOTATED CHECKLIST ON DIATOMS FROM LAKE OHRID A. Mihoa*, H. Lange-Bertalotb aDepartment of Biology, Faculty of Natural Sciences, Tirana University, Albania. Tel.: +(355)4.225454 or 227669, fax: +(355)4.222839, e-mail: amiho@icc-al.org bBotanisches Institut, Johann Wolfgang Goethe-Universitaet, Siesmayerstrasse 70, D-60054 Frankfurt/M, Germany. * for correspondence

  2. Prof. H. Lange-Bertalot, Botanisches Institut, Johann Wolfgang Goethe-Universitaet, Siesmayerstrasse 70, D-60054 Frankfurt/M, Germany FYR of Macedonia Greece Albania

  3. About 40 plankton or benthic samples, collected in Albanian littoral habitats (Tushemishti, Pogradeci, Guri-Kuq, Pojska, Lini, Driloni springs, etc.), between 1993-2003 • Cleaning of diatom frustules: boiling with HClcc and H2SO4cc (Krammer & Lange-Bertalot, 1986-91) and mounted in microscopic slides using Naphrax (index 1.69) • Examinations with the microscope LEICA DML (objective 63x PL APO)and determinations followedup Krammer & Lange-Bertalot (1986-2001). • Samples, permanent slides and photos were deposited in Section of Botany, Tirana University; others were part of the collection of Prof. Dr. H. Lange-Bertalot, Botanical Institute, J. W. Goethe University, Frankfurt/M. • From the structure of the epiphytic diatoms, the trophic state was calculated, using the formula of Zelinka & Marvan (1961) and discussed previously by Miho & Lange-Bertalot (2003) Frankfurt, 2000

  4. Lake Ohrid: aquatic habitats Driloni springs, Pogradeci Driloni springs, Pogradeci Lini village, Ohrid lake Buqeze, Ohrid lake

  5. Composition of diatoms (%), nr. of species (N), Shannon index (H’) and Diatom Trophic Index (TIDIA) in littoral habitats around Lake Ohrid (Miho & Lange-Bertalot, 2003) Place Sampling mode & time Centrales % Pennales % N H’ TDI Driloni pond Net sample (50 µm), June 1993 0.0 100 68 2.56 - 1km near Pogradeci 27.9 72.1 93 4.75 - Guri i Kuq 6.0 94.0 93 4.60 - Lini 5.8 94.2 108 4.77 - Pojska, + epyphites Net sample (25 µm), September 1996 5.3 94.7 70 3.96 - 2km near Ohrid (MK) 27.9 72.1 92 5.21 - Driloni River, + epiphytes 5.3 94.7 66 3.39 - Pogradeci town 9.7 90.3 77 4.93 - Driloni, fishing pond Net sample (25 µm), September 1997 7.2 92.8 66 3.10 - Driloni River, +epiphytes 0.0 100 69 1.64 2.5 Tushemishti, +epiphytes 0.0 100 155 3.68 2.1 1 km near Pogradeci 25.3 75.1 90 4.67 - Pojska 47.5 52.5 51 3.70 - Tushemishti Epiphytes, November 2000 0.0 100 19* 3.14 1.5 Pogradeci town, 0.5 99.5 22* 2.60 2.2 Pogradeci tourism 1.7 98.3 20* 2.83 2.2 Pogradeci bridge 0.6 99.4 20* 2.66 2.3 Total number of species: 22 ~360 ~380

  6. More than 380 taxa were found in Albanian part: • About 260 taxa were in common with what was found by other researchers • 120 were not recorded before in Ohrid • More than 90 taxa belong to the red list of almost extinct, endangered, strongly endangered, or extremely rare species for Central Europe (Lange-Bertalot, 1996) • About 25 taxa have been considered interesting or even new. Six of them were described as new by Lange-Bertalot (2001), like Aneumastus albanicus, A. rosettae, A. humboltianus, Navicula pseudoppugnata, N. parahasta and N. hastatula

  7. (LM: x 1500): • Cyclotella hustedtii Jurilj • Cocconeis robusta Jurilj • Placoneisnov. sp. • Placoneis porifera (Hustedt) var. porifera • Diploneis heisingerie Jurilj • Aneumastus rosettae Lange-Bertalot & Miho • Aneumastus humboldtianus Lange-Bertalot & Miho • Navicula parahasta Lange-Bertalot & Miho • Navicula perturbata Jurilj

  8. PLATE II • (SEM: all x3000, except fig. 8: x6000): • Amphora aff. crucifera Cleve (intern view of the valve) • Aneumastus albanicus Lange-Bertalot & Miho • Gomphonema irroratum Hustedt • Navicula stankovicii Hustedt • Navicula pseudoppugnata Lange-Bertalot & Miho • Sellaphoranov. sp. • Navicula hastatula Lange-Bertalot & Miho (intern view of the valve) • Geisslerianov. sp. 3 2 10 µm Fig. 8 = 20 µm 1 7 4 5 6 8

  9. Navicula nov. sp. (Driloni springs, Ohrid) Valve with very fine structure, 55-70 µm long and ca. 11 µm wide, striae 12/10 µm, lineolae more than 35/10µm. 1-8

  10. 1-4: Sellaphora nov. sp1 (aff. bacillum) 5-7: Sellaphora nov. sp2 8-10: Sellaphora nov. sp.3 (aff. americana) 11: Sellaphora gregoryana 12: Geissleria nov. sp. (aff. decussis) 1-4 5-7 11 8-10 12-15

  11. Authors Di Cl Pe Kr Eu Cy Tot New 1. Beck, 1904 19 11 - - - 2 32 - 2. Petkoff, 1910 - 4 - - - 3 7 - 3. Dordevic, 1905 1 3 2 - - - 6 - 4. Petkoff, 1910 - 4 - - - 3 7 - 5. Schröder, 1921 2 7 2 2 - 4 17 - 6. Forti, 1931 3 11 4 5 - 4 27 - 7. Fott, 1933 10 24 3 7 1 3 48 7* 8. Hustedt, 1945 225 - - - - - 225 25 9. Jurilj, 1954 355 - - - - - 355 50 10. Kozarov, 1961 2 - - - - - 20 - 11. Cado, 1977 360 193 - - - 5 558 - 12. Miho, 1998 61 9 3 1 3 3 80 - 13. Miho & Lange-Bertalot (2004) 380 - - - - - 380 ~25

  12. Floristic considerations: • Lake Ohrid represent unique ecosystems even from microscopic algae point of view, especially diatoms -More than 550 species and intraspecific taxa of diatoms (35 centricae and about 520 pennatae),seems to belong to the Lake as a whole -Lake Ohrid is distinguished for having a high presence (about ¼) of rare and tertiary relict species of diatoms, like Cyclotella fottii, C. hustedtii,Cocconeis robusta, Diploneis heisingeriae, Gomphoneis transsylvanica, Gomphonema irroratum, Navicula perturbata, N. jakovlevicii,Surirella helissella,S. iconella,S. imbuta,etc.

  13. Ecological considerations • Most of the species are oligotraphentic, mainly present in planktonic samples, growing up only in oligotrophic waters with low nutrient level • Tolerant, mesotrophentic or eutrophentic species have been observed in littoral habitats, showing certain pollution from human activity • Assessment of microscopic algae, especially diatoms, can give a very good view of natural state of the habitats, of their trophy, and the influence of human activities • Join the efforts towards the protection of water quality in Ohrid and Prespa, and promote a sustainable development in whole area

  14. Acknowledgements • The study is completed thanks to the support of the German Foundation Alexander von Humboldt (AvH), which sponsored the one-year visit of Dr. Miho in Germany, beside Prof. H. Lange-Bertalot, Botanical Institute, J. W. Goethe University, Frankfurt/M. • Special thanks are addressed to the kind support of the group of Ecology of Waters, and to Mr. M. Ruppel, Department of Biology, for assistance offered in operating the Scanning Electronic Microscope. • We are grateful to Dipl. Biol. D. Tase, Tirana University, which patiently elaborated in PC all relevant floristic tables. • The manuscript was kindly corrected in a better English by Mr. D. Redford, National Democratic Institute (NDI), Tirana, to whom we express our gratitude.

  15. THANK YOU! FALEMINDERIT!

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