@article{WichmannJeltschDeanetal.2002, author = {Wichmann, Matthias and Jeltsch, Florian and Dean, Richard and Moloney, Kirk A. and Wissel, Christian}, title = {Does climate change in arid savanna affect the population persistence of raptors?}, year = {2002}, language = {en} } @article{WichmannJeltschDeanetal.2002, author = {Wichmann, Matthias and Jeltsch, Florian and Dean, Richard and Moloney, Kirk A. and Wissel, Christian}, title = {Weather does matter : simulating population dynamics of tawny eagle (Aquila rapax) under various rainfall scenarios}, year = {2002}, language = {en} } @article{Wichmann2002, author = {Wichmann, Matthias}, title = {Survival in changing environments : modeling the impact of climate change and land use on raptors in arid savanna}, pages = {103 S.}, year = {2002}, language = {en} } @article{WeyhenmeyerAdrianGaedkeetal.2002, author = {Weyhenmeyer, G. A. and Adrian, Rita and Gaedke, Ursula and Livingstone, D. M. and Maberly, Stephen C.}, title = {Response of phytoplankton in European lakes to a change in the North Atlantic Oscillation}, issn = {0368-0770}, year = {2002}, language = {en} } @article{WernerBehrsingScharteetal.2002, author = {Werner, Deljana and Behrsing, Olaf and Scharte, Gudrun and Woller, Jochen and Steup, Martin and Micheel, Burkhard}, title = {Monoclonal anti-diuron antibodies prevent inhibition of photosynthesis by diuron}, year = {2002}, language = {en} } @article{WackervonElert2002, author = {Wacker, Alexander and von Elert, Eric}, title = {Strong influences of larval diet history on subsequent post-settlement growth in the freshwater mollusc Dreissena polymorpha}, year = {2002}, abstract = {A significant seasonal variation in size at settlement has been observed in newly settled larvae of Dreissena polymorpha in Lake Constance. Diet quality, which varies temporally and spatially in freshwater habitats, has been suggested as a significant factor influencing the life history and development of freshwater invertebrates. Accordingly, experiments were conducted with field-collected larvae to test the proposal that diet quality can determine planktonic larval growth rates, size at settlement and subsequent post-metamorphic growth rates. Larvae were fed one of two diets or starved. One diet was composed of cyanobacterial cells, which are de; cient in polyunsaturated fatty acids (PUFAs) and the other was a mixed diet rich in PUFAs. Freshly metamorphosed animals from the starvation treatment had a carbon content per individual 70\% lower than that of larvae fed the mixed diet. This apparent exhaustion of larval internal reserves resulted in a 50\% reduction of the post-metamorphic growth rates. Growth was also reduced in animals previously fed the cyanobacterial diet. Hence, low food quantity or low food quality during the larval stage of D. polymorpha, lead to irreversible effects for post-metamorphic animals and are related to inferior competitive abilities.}, language = {en} } @article{WackerBechervonElert2002, author = {Wacker, Alexander and Becher, Paul and von Elert, Eric}, title = {Food quality effects of unsaturated fatty acids on larvae of the zebra mussel Dreissena polymorpha}, year = {2002}, abstract = {In standardized growth experiments, newly hatched larvae of the zebra mussel Dreissena polymorpha were fed diets representing different biochemical compositions. Algae that were rich in (n-3) polyunsaturated fatty acids (PUFAs), except for long-chained (.C18) PUFAs (Chlorella minutissima and Monoraphidium minutum) were of low food quality. Higher growth than on C. minutissima or M. minutum was supported by a culture of the cyanobacterium Aphanothece sp., which contained traces of a long-chained (n-3) PUFA, docosahexaenoic acid (DHA, 22 : 6n-3). The alga Isochrysis aff. galbana, which contained high amounts of the longchained (n-3) PUFAs DHA and eicosapentaenoic acid (EPA, 20 : 5n- 3), supported the highest growth. The alga Nannochloropsis limnetica, which differed from I. galbana by a defi- ciency in DHA, allowed slightly, but significantly lower, growth. Growth of larvae on N. limnetica was increased by enrichment of N. limnetica cells with a lipid extract of I. galbana, showing that larval growth on N. limnetica was limited by the deficiency of a compound that was present in I. galbana. Growth was also enhanced by feeding N. limnetica cells supplemented with DHA, but not by cells enriched with EPA, indicating that DHA was the limiting factor. We conclude that, on DHA-deficient food, the larvae of D. polymorpha were not able to sufficiently convert C18-PUFAs into long- chained (n-3) PUFAs and that the rates for elongation and desaturation of EPA into DHA limited growth.}, language = {en} } @article{VernesiPecchioliTiedemannetal.2002, author = {Vernesi, C. and Pecchioli, E. and Tiedemann, Ralph and Randi, E. and Bertorelle, G.}, title = {The genetic structure of natural and reintroduced roe deer (Capreolus capreolus) populations in the Alps and central Italy, with reference to the mitochondrial DNA phylogeography of Europe}, issn = {0962-1083}, year = {2002}, language = {en} } @article{TschoepeBurkartTielboerger2002, author = {Tsch{\"o}pe, Okka and Burkart, Michael and Tielb{\"o}rger, Katja}, title = {Habitat management in former military training area by means of Megaherbivores}, year = {2002}, language = {en} } @article{StoellnerStoeckleinSchelleretal.2002, author = {St{\"o}llner, Daniela and St{\"o}cklein, Walter F. M. and Scheller, Frieder W. and Warsinke, Axel}, title = {Membrane-immobilized haptoglobin as affinity matrix for a hemoglobin-A1c-immunosensor}, year = {2002}, language = {en} } @article{StoellnerSchellerWarsinke2002, author = {Stoellner, Daniela and Scheller, Frieder W. and Warsinke, Axel}, title = {Activation of cellulose membranes with 1,1{\"i}-carbonyldiimidazole or 1-cyano-4-4-dimethylaminopyridinium tetrafluoroborate as a basis for the development of immunosensors}, year = {2002}, language = {en} } @article{ShertzerEllnerFussmannetal.2002, author = {Shertzer, Kyle W. and Ellner, Stephen P. and Fussmann, Gregor F. and Hairston, Nelson G.}, title = {Predator-prey cycles in an aquatic microcosm : testing hypotheses of mechanism}, year = {2002}, abstract = {1. Fussmann et al. (2000) presented a simple mechanistic model to explore predator-prey dynamics of a rotifer species feeding on green algae. Predictions were tested against experimental data from a chemostat system housing the planktonic rotifer Brachionus calyciflorus and the green alga Chlorella vulgaris. 2. The model accurately predicted qualitative behaviour of the system (extinction, equilibria and limit cycles), but poorly described features of population cycles such as the period and predator-prey phase relationship. These discrepancies indicate that the model lacked some biological mechanism(s) crucial to population cycles. 3. Here candidate hypotheses for the 'missing biology' are quantified as modifications to the existing model and are evaluated for consistency with the chemostat data. The hypotheses are: (1) viability of eggs produced by rotifers increases with food concentration, (2) nutritional value of algae increases with nitrogen availability, (3) algal physiological state varies with the accumulation of toxins in the chemostat and (4) algae evolve in response to predation. 4. Only Hypothesis 4 is compatible with empirical observations and thus may provide important insight into how prey evolution affects predator- prey dynamics.}, language = {en} } @article{SellrieSchenkBehrsingetal.2002, author = {Sellrie, Frank and Schenk, J{\"o}rg A. and Behrsing, Olaf and Bottger, Volker and Micheel, Burkhard}, title = {A competitive immunoassay to detect a hapten using an enzyme-labelled peptide mimotope as tracer}, year = {2002}, abstract = {Mimotope peptides-peptides which mimic the binding of a hapten to its corresponding monoclonal antibody-were conjugated to peroxidase and used in competitive immunoassay. The established immunoassay was used to quantitatively determine the concentration of hapten. As model system in all the experiments described here, we used the binding of the monoclonal antibody B13-DE1 to fluorescein and the corresponding peptide mimotope.}, language = {en} } @phdthesis{Schmidt2002, author = {Schmidt, Ulrike}, title = {Characterisation of the guard cell-specific phosphoenolpyruvate carboxylase and PEPC kinases from Solanum tuberosum}, pages = {108 S.}, year = {2002}, language = {en} } @article{Schenk2002, author = {Schenk, J{\"o}rg A.}, title = {Two Hybrid cDNA Cloning}, year = {2002}, language = {en} } @article{SchellerWollenbergerLeietal.2002, author = {Scheller, Frieder W. and Wollenberger, Ursula and Lei, Chenghong and Jin, Wen and Ge, Bixia and Lehmann, Claudia and Lisdat, Fred and Fridman, Vadim}, title = {Bioelectrocatalysis by redox enzymes at modified electrodes}, year = {2002}, language = {en} } @article{SchellerBauerMakoweretal.2002, author = {Scheller, Frieder W. and Bauer, Christian G. and Makower, Alexander and Wollenberger, Ursula and Warsinke, Axel and Bier, Frank Fabian}, title = {Immunoassays using enzymatic amplification electrodes}, isbn = {0-7484-0791-X}, year = {2002}, language = {en} } @article{Scheffler2002, author = {Scheffler, Christiane}, title = {A stature of one meter : how is the variability?}, year = {2002}, language = {en} } @article{RitteLloydEckermannetal.2002, author = {Ritte, Gerhard and Lloyd, James R. and Eckermann, Nora and Rottmann, Antje and Kossmann, Jens and Steup, Martin}, title = {The starch-related R1 protein is an a-glucan, water dikinase}, issn = {0027-8424}, year = {2002}, language = {en} } @article{ReimannRitteSteupetal.2002, author = {Reimann, Rezarta and Ritte, Gerhard and Steup, Martin and Appenroth, Klaus-J.}, title = {Association of a-amylase and the R1 protein with starch granules precedes the initiation of net starch degradation in turions of Spirodela polyrhiza}, issn = {0031-9317}, year = {2002}, language = {en} }