Dr. Lothar Krienitz

IGB, Dept.3,
Limnology of Stratified Lakes 
Alte Fischerhütte 2
OT Neuglobsow
D-16775 Stechlin

Fields of Interests:

Algal systematics and ecology

Phytoplankton and biodiversity

Tel: +49 (0) 33082 699 26
Fax: +49 (0) 33082 699 17

krie@igb-berlin.de

Research Strategy
- Phycological research in combination of field and laboratory work as well as of classical (morphological) and modern (molecularbiological) methods

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Selected papers from 2010-1996

Kotut, K., Ballot, A., Wiegand, C. & Krienitz, L. 2010. Toxic cyanobacteria at Nakuru sewage oxidation ponds – A potential threat to wildlife. Limnologica, in press.

Krienitz, L., Bock, C., Luo, W. & Pröschold, T. 2010. Polyphyletic origin of the Dictyosphaerium-morphotype within Chlorellaceae (Trebouxiophyceae). J. Phycol., in press.

Luo, W., Pröschold, T., Bock, C. & Krienitz, L. 2010. Generic concept in Chlorella-related coccoid green algae (Chlorophyta, Trebouxiophyceae). Plant Biol., in press.

Pröschold, T., Bock, C., Luo, W. & Krienitz, L. 2010. Polyphyletic distribution of bristle formation in Chlorellaceae: Micractinium, Diacanthos, Didymogenes and Hegewaldia gen. nov. (Trebouxiophyceae, Chlorophyta). Phycological Research, in press.

Ballot, A., Kotut, K., Novelo, E. & Krienitz, L. 2009. Changes of phytoplankton communities in Lakes Naivasha and Oloidien, examples of degradation and salinization of lakes in the Kenyan Rift Valley. Hydrobiologia, 632, 359-363.

Dadheech, P.K., Krienitz, L., Kotut, K., Ballot, A. & Casper, P. 2009. Molecular detection of uncultured cyanobacteria and aminotransferase domains for cyanotoxin production in sediments. FEMS Microbiol. Ecol., 68, 340-350.

Krienitz, L. 2009. Algae. In: Likens, G. (Ed.) Encyclopedia of Inland Waters, Vol. I, pp. 103-113. Elsevier, Oxford.

Krienitz, L. 2009. Die Nahrungsprobleme des Zwergflamingos. Biologie in unserer Zeit, 39, 258-266.

Krienitz, L. 2009. Algal food quality of Lesser Flamingos. Roan News, 4/2009, 41-43.

Padisák, J., Hajnal, É., Koschel, R. & Krienitz, L. 2009. The importance of winter phytoplankton composition in contrasting lakes: a deep stratifying and a shallow polymictic. Verh. Internat. Verein. Limnol., 30, 757-760.

Ballot, A., Dadheech, P.K., Haande, S. & Krienitz, L. 2008. Morphological and phylogenetic analysis of Anabaenopsis abijatae and Anabaenopsis elenkinii (Nostocales, Cyanobacteria) from tropical inland water bodies. Microb. Ecol., 55, 608-618.

Coesel, P.F.M. & Krienitz, L. 2008. Diversity and geographic distribution of desmids and other coccoid green algae. Biodivers. Conserv., 17, 381-392.

Kasprzak, P., Padisák, J., Koschel, R., Krienitz, L. & Gervais, F. 2008. Chlorophyll a concentration across a trophic gradient of lakes: An estimator of phytoplankton biomass. Limnologica, 38, 327-338.

Mehner, T., Diekmann, M., Gonsiorczyk, T., Kasprzak, P., Koschel, R., Krienitz, L., Rumpf, M., Schulz, M. & Wauer, G. 2008. Rapid recovery from eutrophication of a stratified lake by disruption of internal nutrient load. Ecosystems, 11, 1142-1156.

Mehner, T., Padisák, J., Kasprzak, P., Koschel, R. & Krienitz, L. 2008. A test of food web hypotheses by exploring time series of fish, zooplankton and phytoplankton in an oligo-mesotrophic lake. Limnologica, 38, 179-188.

Kasprzak, P., Benndorf, J., Gonsiorczyk, T., Koschel, R., Krienitz, L., Mehner, T., Hülsmann, S., Schultz, H. & Wagner, A. 2007. Reduction of nutrient loading and biomanipulation as tools in water quality management: Long-term observations on Bautzen Reservoir and Feldberger Haussee (Germany). Lake and Reservoir Management, 23, 410-427.

Kotut, K., Ballot, A. & Krienitz, L. 2006. Toxic cyanobacteria and its toxins in standing waters of Kenya: implications for water resource use. J. Water & Health, 4, 233-245.

Krienitz, L. & Wirth, M. 2006. The high content of polyunsaturated fatty acids in Nannochloropsis limnetica (Eustigmatophyceae) and its implication for food web interactions, freshwater aquaculture and biotechnology. Limnologica, 36, 204-210.

Luo, W., Pflugmacher, S., Pröschold, T., Walz, N. & Krienitz, L. 2006. Genotype versus phenotype variability in Chlorella and Micractinium (Chlorophyta, Trebouxiophyceae). Protist, 157, 315-333.

Metcalf, J.S., Morrison, L.F., Krienitz, L., Ballot, A., Krause, E., Kotut, K., Pütz, S., Wiegand, C., Pflugmacher, S. & Codd, G.A. 2006. Analysis of the cyanotoxins anatoxin-a and microcystins in Lesser Flamingo feathers. Toxicol. Environmental Chemistry, 88, 159-167.

Ballot, A., Krienitz, L., Kotut, K., Wiegand, C., Pflugmacher, S. 2005. Cyanobacteria and cyanobacterial toxins in the alkaline crater lakes Sonachi and Simbi, Kenya. Harmful Algae, 4, 139-150.

Ballot, A., Dadheech, P.K. & Krienitz, L. 2004. Phylogenetic relationship of Arthrospira, Phormidium and Spirulina strains from Kenyan and Indian waterbodies. Algol. Stud. 113, 37-56.

Ballot, A., Krienitz, L., Kotut, K., Wiegand, C., Metcalf, J.S., Codd, G.A. & Pflugmacher, S. 2004. Cyanobacteria and cyanobacterial toxins in three alkaline Rift Valley lakes of Kenya – Lakes Bogoria, Nakuru and Elmenteita. J. Plankton Res. 26, 925-935.

Krienitz, L., Hegewald, E.H., Hepperle, D., Huss, V.A.R., Rohr, T. & Wolf, M. 2004. Phylogenetic relationship of Chlorella and Parachlorella gen. nov. (Chlorophyta, Trebouxiophyceae). Phycologia 43, 529-542.

Krienitz, L., Ballot, A., Kotut, K., Wiegand, C., Pütz, S., Metcalf, J.S., Codd, G.A. & Pflugmacher, S. 2003. Contribution of hot spring cyanobacteria to the mysterious deaths of Lesser Flamingos at Lake Bogoria, Kenya. FEMS Microbiology Ecology 43, 141-148.

Krienitz, L., Ballot, A., Kotut, K., Wiegand, C., Codd, G.A. & Pflugmacher, S. 2003. Naturwunder in Gefahr: Rift-Valley-Seen Kenias. Biologie in unserer Zeit 33, 123-129.

Krienitz, L., Hegewald, E., Hepperle, D. & Wolf, M. 2003. The systematics of coccoid green algae: 18S rRNA gene sequence data versus morphology. Biologia 58, 437-446.

Padisák, J., Scheffler, W., Kasprzak, P., Koschel, R. & Krienitz, L. 2003. Interannual variability in the phytoplankton composition of Lake Stechlin (1994-2000). Arch. Hydrobiol. Spec. Issues Advanc. Limnol. 58, 101-133.

Padisák, J., Barbosa, F., Koschel, R. & Krienitz, L. 2003. Deep layer cyanoprokaryota maxima in temperate and tropical lakes. Arch. Hydrobiol. Spec. Issues Advanc. Limnol. 58, 175-199.

Krienitz, L., Ballot, A., Wiegand, C., Kotut, K., Codd, G.A. & Pflugmacher, S. 2002. Cyanotoxin-producing bloom of Anabaena flos-aquae, Anabaena discoidea and Microcystis aeruginosa (Cyanobacteria) in Nyanza Gulf of Lake Victoria, Kenya. J. Appl. Botany 76, 179-183.

Wolf, M., Buchheim, M., Hegewald, E., Krienitz, L., Hepperle, D. 2002. Phylogenetic position of the Sphaeropleaceae (Chlorophyta). Plant Syst. Evol. 230, 161-171.

Hehmann, A., Krienitz, L., Koschel, R. 2001. Long-term phytoplankton changes in an artificially divided top-down manipulated humic lake. Hydrobiologia 448, 83-96.

Hepperle, D., Krienitz, L. 2001. Systematics and ecology of chlorophyte picoplankton in German inland waters along a nutrient gradient. Internat. Rev. Hydrobiol. 86, 269-284.

Krienitz, L., Ustinova, I., Friedl, T., Huss, V.A.R. 2001. Traditional generic concepts versus 18S rRNA gene phylogeny in the green algal family Selenastraceae (Chlorophyceae, Chlorophyta). J. Phycol. 37, 852-865.

Nakazawa, A., Krienitz, L., Nozaki, H. 2001. Taxonomy of the unicellular green algal genus Vitreochlamys (Volvocales), based on comparative morphology of cultured material. Eur. J. Phycol. 36, 113-128.

Nozaki, H., Krienitz, L. 2001. Morphology and phylogeny of Eudorina minodii (Chodat) Nozaki et Krienitz comb. Nov. (Volvocales, Chlorophyta) from Germany. Eur. J. Phycol. 36, 23-28.

Hepperle, D., Hegewald, E., Krienitz, L. 2000. Phylogenetic position of the Oocystaceae (Chlorophyta). J. Phycol. 36, 590-595.

Lewin, R.A., Krienitz, L., Goericke, R., Takeda, H., Hepperle, D. 2000. Picocystis salinarum gen. et sp. nov. (Chlorophyta) – a new picoplanktonic green alga. Phycologia 39, 560-565.

Krienitz, L., Hepperle, D., Stich, H.-B., Weiler, W. 2000. Nannochloropsis limnetica (Eustigmatophyceae), a new species of picoplankton from freshwater. Phycologia 39, 219-227.

Schlegel, I., Krienitz, L., Hepperle, D. 2000. Variability of calcification of Phacotus lenticularis (Chlorophyta, Chlamydomonadales) in nature and culture. Phycologia 39, 318-322.

Ustinova, I., Krienitz, L., Huss, V.A.R. 2000. Hyaloraphidium curvatum is not a green alga, but a lower fungus; Amoebidium parasiticum is not a fungus, but a member of the DRIPs. Protist 151, 253-262.

Krienitz, L., Takeda, H., Hepperle, D. 1999. Ultrastructure, cell wall composition and phylogenetic position of Pseudodictyosphaerium jurisii (Chlorophyta, Chlorococcales) including a comparison with other picoplanktonic algae. Phycologia 38, 100-107.

Padisák, J., Krienitz, L., Scheffler, W., Koschel, R., Kristiansen, J., Grigorszki, I. 1998. Phytoplankton succession in the oligotrophic Lake Stechlin (Germany). Hydrobiologia 369/370, 179-197.

Krienitz, L. 1998. Amphikrikos variabilis sp. nov. (Chlorophyta), a common species of inland waters of Namibia. Arch. Hydrobiol. Suppl. Algological Studies 91, 1-10.

Kotut, K., Krienitz, L., Scheffler, W., Engels, M., Grigorszky, I. 1998. Some interesting cyanoprocaryotes and algae from Turkwel Gorge Reservoir, Kenya. Arch. Hydrobiol. Suppl. Algological Studies 91, 37-55.

Kotut, K., Krienitz, L., Muthuri, M. 1998. Temporal changes in phytoplankton structure and composition at the Turkwel Gorge Reservoir, Kenya. Hydrobiologia 368, 41-59.

Hepperle, D., Nozaki, H., Hohenberger, S., Huss, V.A.R., Morita, E., Krienitz, L. 1998. Phylogenetic position of the Phacotaceae within the Chlamydophyceae as revealed by analysis of 18SrDNA- and rbcL-Sequences. J. Mol. Evol. 47, 420-430.

Padisák, J., Krienitz, L., Koschel, R., Nedoma, J. 1997. Deep layer autotrophic picoplankton maximum in the oligotrophic Stechlinsee, Germany: origin, activity, development and erosion. Europ. J. Phycol. 32, 403-416.

Krienitz, L., Hehmann, A., Casper, S.J. 1997. The unique phytoplankton community of a highly acidic bog lake in Germany. Nova Hedwigia 65, 411-430.

Hepperle, D., Krienitz, L. 1997. Phacotus lenticularis (Chlamydomonadales, Phacotaceae) zoospores require external supersaturation of calcium carbonate for calcification in culture. J. Phycol. 33, 415-424.

Krienitz, L., Kasprzak, P., Koschel, R. 1996. Long term study on the influence of eutrophication, restoration and biomanipulation on the structure and development of phytoplankton communities in Feldberger Haussee (Baltic Lake District, Germany). Hydrobiologia 330, 89-110.

Krienitz, L., Huss, V.A.R., Hümmer, C. 1996. Picoplanktonic Choricystis-species (Chlorococcales, Chlorophyta) and problems surrounding the morphologically similar "Nannochloris-like algae". Phycologia 35, 332-341.

Hepperle, D., Krienitz, L. 1996. The extracellular calcification of zoospores of Phacotus lenticularis (Chlorophyta, Chlamydomonadales). Eur. J. Phycol. 31, 11-21.

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