TY - BOOK A1 - Gaedke, Ursula A1 - Wickham, Steve T1 - Ciliate dynamics in response to changing biotic and abiotic conditions in a large, deep lake (L. Constance) N2 - During 1987-1998, the ciliates and their prey and predator communities in large, deep, mesotrophic Lake Constance were intensively studied as it underwent re-oligotrophication. Ciliate biomass exhibited the bimodal seasonal distribution typical for meso-eutrophic lakes, with high biomass in spring and summer and low biomass in winter and during the clear-water phase. Cluster analysis produced nine groups of temporally co-occurring ciliate morphotypes with potentially similar ecological characteristics. The clusters exhibited a larger seasonality than found in the size distribution, showing that similarly-sized ciliates had seasonally compensatory dynamics. Ciliate biomass declined by approx. 30 % during the 12 years of study, i.e. considerably less than daphnids (and total phosphorus). This yielded a significant increase in the ratio between summer ciliate and daphnid biomass as re-oligotrophication progressed, in contrast to previous studies. Few indications for a mechanistic link between phosphorus concentrations (which declined threefold during the study period) and ciliate biomass or community composition via group-specific food concentrations were found. The relative contribution of three of the nine clusters changed as re-oligotrophication progressed. Ciliate size distribution was related to reoligotrophication and daphnid biomass in summer. The smallest and largest ciliates gained in importance when daphnids decreased whereas large ciliates declined. Overall, summer daphnid biomas had a greater predictive power for attributes of the ciliate community than the other factors studied (phosphorus, prey biomass, copepod biomass). The extent of bottom-up and top-down control of ciliates appeared to be time and group specific. Overall, the ciliate community exhibited remarkably recurrent seasonal patterns despite major alternations in abiotic and biotic conditions. Y1 - 2004 SN - 0948-3055 ER - TY - BOOK A1 - Gaedke, Ursula A1 - Seifried, Angelika A1 - Adrian, Rita T1 - Biomass size spectra and plankton diversity in a shallow eutrophic lake N2 - Biomass size spectra collate structural and functional attributes of plankton communities enabling standardised temporal and cross-system comparisons and may be rapidly obtained by automated particle counters. To examine how differences in plankton communities from highly eutrophic and more oligotrophic lakes are reflected in size spectra, a three-year time series of biomass size spectra was established for polymictic, eutrophic Lake Müggelsee, based on approximately weekly sampling and microscopic enumeration. The continuous but often bumpy size spectra reflected appropriately the seasonal and trophy-related variations in the plankton composition and growth conditions and the potential impact of daphnids on smaller plankton. We tested the hypothesis that more diverse plankton communities have smoother size spectra than impoverished ones. The spectra of L. Müggelsee and other more less eutrophic lakes covaried roughly with the functional diversity in total plankton composition but were unrelated to taxonomical diversity within the phyto- or mesozooplankton. The slopes of the normalised size spectra of Lake Müggelsee were generally more negative than -1, exhibited a recurrent seasonal pattern, and were strongly correlated with crustacean biomass. In contrast to less eutrophic systems, slopes could not be used to quantify energy fluxes within the foodweb due to highly variable algal P/B ratios and frequently bumpy size distributions. The latter indicated stronger deviations from the ideal concept of a steady energy flow along the size gradient than found in e. g. large, mesotrophic Lake Constance. Y1 - 2004 SN - 1434-2944 ER - TY - BOOK A1 - Burkart, Michael A1 - Dierschke, Hartmut A1 - Hölzel, Norbert A1 - Nowak, Bernd A1 - Fartmann, Thomas T1 - Molinio-Arrhenatheretea = Kulturgrasland und verwandte Vegetationstypen. Teil 2: Molinietalia T3 - Synopsis der Pflanzengesellschaften Deutschlands Y1 - 2004 SN - 1433-8440 VL - 9 PB - Selbstverl. der Floristisch-Soziologischen Arbeitsgemeinschaft CY - Göttingen ER - TY - BOOK A1 - Wollenberger, Ursula A1 - Renneberg, Reinhard A1 - Bier, Frank Fabian A1 - Scheller, Frieder W. T1 - Analytische Biochemie : eine praktische Einführung in das Messen mit Biomolekülen Y1 - 2003 SN - 3-527-30166-6 PB - John Wiley & Sons CY - Hoboken ER - TY - BOOK ED - Wallschläger, Hans-Dieter ED - Mrzljak, Jadranka ED - Wiegleb, Gerhard T1 - Offenland und Sukzession : Tagungsband zum Symposium 6 der 32. Jahrestagung der Gesellschaft für Ökologie in Cottbus vom 16. - 20. September 2002 T3 - Aktuelle Reihe / Brandenburgische Technische Universität Cottbus Y1 - 2002 VL - Fakultät Umweltwissenschaften un PB - Eigenverl. der BTU CY - Cottbus ER - TY - BOOK A1 - Pfeil, Wolfgang T1 - Protein stability and folding : a collecton of thermodynamic data ; Supplement 1 Y1 - 2001 SN - 3-540-42168-8 PB - Springer CY - Berlin ER - TY - BOOK A1 - Beier, Wolfgang A1 - Heilmann, Dieter T1 - Wiederfund von Meloe coriarius (Brandt&Erichson, 1832 (Col., Meloidae) für Deutschland sowie Nachweise weiterer bemerkenswerter Käferarten bei Lebus an der Oder (Land Brandenburg) Y1 - 2001 ER - TY - BOOK A1 - Siering, Günter A1 - Beier, Wolfgang T1 - Zum Vorkommen von Bockkäfern (Col., Cerambicidae) im Gebiet des ehemaligen GUS-Truppenübungsplatzes "Dallgow-Döberitz" bei Potsdam, 1. Nachtrag Y1 - 2001 ER - TY - BOOK ED - Greil, Holle T1 - Schnittstelle Mensch-Umwelt in Vergangenheit, Gegenwart und Zukunft : Proceedings 3. Kongress der Gesellschaft für Anthropologie (GfA), Göttingen, den 1. - 3. Oktober 1998 Y1 - 2000 SN - 3-89712-961-2 PB - Cuvillier CY - Göttingen ER - TY - BOOK A1 - Vilcinskas, Andreas T1 - Heimische Aquarienfische T3 - Ihr Hobby Y1 - 2000 SN - 3-933646-50-2 VL - 42 PB - bede-Verl. CY - Ruhmannsfelden ER - TY - BOOK A1 - Vilcinskas, Andreas T1 - Meerestiere der Tropen : ein Bestimmungsbuch für Taucher, Schnorchler und Aquarianer ; über 700 niedere Tiere, Fische, Reptilien und Säuger T3 - Kosmos Naturführer Y1 - 2000 SN - 3-440-07943-0 PB - Kosmos CY - Stuttgart ER - TY - BOOK A1 - Vilcinskas, Andreas T1 - Fische : mitteleuropäische Süßwasserarten und Meeresfische der Nord- und Ostsee T3 - BVL-Bestimmungsbuch Y1 - 2000 SN - 3-405-15848-6 PB - BLV-Verl.-Ges CY - München ER - TY - BOOK A1 - Vilcinskas, Andreas T1 - Einheimische Süßwasserfische : alle Arten ; Merkmale, Verbreitung, Lebensweise Y1 - 1999 SN - 3-8289-1510-8 PB - Bechtermünz CY - Augsburg ER - TY - BOOK A1 - Kühling, Matthias A1 - Kummer, Volker T1 - Bemerkenswerte Flechtenfunde aus Brandenburg IV Y1 - 1999 ER - TY - BOOK A1 - Bresler, Vladimir A1 - Bissinger, Vera A1 - Abelson, Avigdor A1 - Dizer, Halmi A1 - Sturm, Armin A1 - Kraetke, Renate A1 - Fishelson, Lev A1 - Hansen, Peter-Diedrich T1 - Marine molluscs and fish as biomarkers of pollution stress in littoral regions of the Red Sea, Mediterranean Sea and North Sea N2 - The intensive development of industry and urban structures along the seashores of the world, as well as the immense increase in marine transportation and other activities, has resulted in the deposition of thousands of new chemicals and organic compounds, endangering the existence of organisms and ecosystems. The conventional single biomarker methods used in ecological assessment studies cannot provide an adequate base for environmental health assessment, management and sustainability planning. The present study uses a set of novel biochemical, physiological, cytogenetic and morphological methods to characterize the state of health of selected molluscs and fish along the shores of the German North Sea, as well as the Israeli Mediterranean and Red Sea. The methods include measurement of activity of multixenobiotic resistance-mediated transporter (MXRtr) and the system of active transport of organic anions (SATOA) as indicators of antixenobiotic defence; glutathione S-transferase (GST) activity as an indicator of biotransformation of xenobiotics; DNA unwinding as a marker of genotoxicity; micronucleus test for clastogenicity; levels of phagocytosis for immunotoxicity; cholinesterase (ChE) activity and level of catecholamines as indicators of neurotoxicity; permeability of external epithelia to anionic hydrophilic probe, intralysosomal accumulation of cationic amphiphilic probe and activity of non-specific esterases as indicators of cell/tissue viability. Complete histopathological examination was used for diagnostics of environmental pathology. The obtained data show that the activity of the defensive pumps, MXRtr and SATOA in the studied organisms was significantly higher in the surface epithelia of molluscs from a polluted site than that of the same species from control, unpolluted stations, providing clear evidence of response to stress. Enhanced frequency of DNA lesions (alkaline and acidic DNA unwinding) and micronucleus-containing cells was significantly higher in samples from polluted sites in comparison to those from the clean sites that exhibited genotoxic and clastogenic activity of the pollutants. In all the studied molluscs a negative correlation was found between the MXRtr levels of activity and the frequency of micronucleus-containing hemocytes. The expression of this was in accordance with the level of pollution. The complete histopathological examination demonstrates significantly higher frequencies of pathological alterations in organs of animals from polluted sites. A strong negative correlation was found between the frequency of these alterations and MXRtr activity in the same specimens. In addition to these parameters, a decrease in the viability was noted in molluscs from the polluted sites, but ChE activities remained similar at most sites. The methods applied in our study unmasked numerous early cryptic responses and negative alterations of health in populations of marine biota sampled from the polluted sites. This demonstrates that genotoxic, clastogenic and pathogenic xenobiotics are present and act in the studied sites and this knowledge can provide a reliable base for consideration for sustainable development Y1 - 1999 ER - TY - BOOK ED - Pette, Dirk ED - Fürst, Dieter Oswald T1 - Reviews of Physiology, Biochemistry and Pharmacology Y1 - 1999 PB - Springer CY - Heidelberg ER - TY - BOOK A1 - Pfeil, Wolfgang T1 - Protein stability and folding : a collection of thermodynamic data Y1 - 1998 SN - 3-540-63717-6 PB - Springer CY - Berlin ER - TY - BOOK ED - Rösing, Friedrich Wilhelm ED - Greil, Holle ED - Henneberg, Maciej ED - Schultz, Michael T1 - Homo : journal of comparative human biology Y1 - 1998 SN - 0018-442X PB - Urban & Fischer CY - Jena ER - TY - BOOK ED - Scheller, Frieder W. T1 - Frontiers in biosensorics : 2. Practical applications Y1 - 1997 SN - 3-7643-5479-8 VL - 81 PB - Birkhäuser CY - Basel, Boston, Berlin ER - TY - BOOK ED - Scheller, Frieder W. T1 - Frontiers in biosensorics : 1. Fundamental aspects Y1 - 1997 SN - 3-7643-5475-5 VL - 80 PB - Birkhäuser CY - Basel, Boston, Berlin ER - TY - BOOK A1 - Bergstedt, Christel A1 - Grönke, Ottokar A1 - Meincke, Irmtraut T1 - Biologie : Lehrbuch für Sekundarstufe II ; Gymnasium, Gesamtschule ; Lehrerband mit Kopiervorlagen Y1 - 1996 SN - 3-06-012155-9 PB - Volk u. Wissen CY - Berlin ER - TY - BOOK ED - Holtzhauer, Martin T1 - Methoden in der Proteinanalytik Y1 - 1996 PB - Springer CY - Berlin ER - TY - BOOK A1 - Holtzhauer, Martin T1 - Biochemische Labormethoden Y1 - 1995 PB - Springer CY - Berlin ER - TY - BOOK ED - Walz, Bernd ED - Somlyo, Avril D. T1 - Calcium and vision : collected papers and reviews Y1 - 1995 ER - TY - BOOK ED - Rogge, Detlev T1 - Helgoland-Praktikum : Ergebnisse des zoologisch-meeresbiologischen Praktikums mit Studierenden der Universität Potsdam an der Biologischen Anstalt Helgoland Y1 - 1994 PB - Univ. CY - Potsdam ER - TY - BOOK A1 - Scharf, Peter T1 - Wegweiser durch die Gewächshäuser und Freilandanlagen des Botanischen Gartens der Universität Potsdam Y1 - 1994 PB - Univ. CY - Potsdam ER - TY - BOOK A1 - Klopfer, Klaus A1 - Pifrement, Wolfgang T1 - Aronstabgewächse für Haus und Garten Y1 - 1994 PB - Urania-Verl. CY - Leipzig [u.a.] ER - TY - BOOK ED - Bayrhuber, Horst ED - Etschenberg, K. ED - Gehlhaar, K.-H. ED - Grönke, Ottokar ED - Klee, R. ED - Kühnemund, H. T1 - Interdisziplinäre Themenbereiche und Projekte im Biologieunterricht : 9. Fachtagung der Sektion Fachdidaktik im VDBiol vom 19.9. bis 24.9.1993 in Ludwigsfelde T3 - Institut für die Pädagogik der Naturwissenschaften : IPN Y1 - 1994 SN - 3-89088-086-X VL - 142 PB - IPN CY - Kiel ER - TY - BOOK A1 - Kummer, Volker T1 - Notizen zur Pflanzenwelt des NSG "Alter Nuthelauf" Y1 - 1993 ER - TY - BOOK A1 - Kummer, Volker T1 - Historie der Krausnicker Kirche Y1 - 1992 PB - Fata-Morgana-Verl. CY - Berlin ER -