@phdthesis{Oehlschlaeger2001,
  author    = {Oehlschl{\"a}ger, Susanne},
  title     = {Zur Habitatwahl, Nahrungs{\"o}kologie und Brutbiologie des Wiederhopfes (Upupa epops) Linn{\´e} 1958 auf den ehemaliegen Truppen{\"u}bungspl{\"a}tzen bei J{\"u}terbog, Brandenburg},
  pages     = {70, XXIII S.},
  year      = {2001},
  language  = {de}
}
@book{SieringBeier2001,
  author    = {Siering, G{\"u}nter and Beier, Wolfgang},
  title     = {Zum Vorkommen von Bockk{\"a}fern (Col., Cerambicidae) im Gebiet des ehemaligen GUS-Truppen{\"u}bungsplatzes "Dallgow-D{\"o}beritz" bei Potsdam, 1. Nachtrag},
  year      = {2001},
  language  = {de}
}
@phdthesis{Brandt2001,
  author    = {Brandt, Stephan Peter},
  title     = {Zelltyp-spezifische Mikroanalyse von Arabidopsis thaliana-Bl{\"a}ttern},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-0000410},
  school      = {Universit{\"a}t Potsdam},
  year      = {2001},
  abstract  = {Im ersten Teil der Arbeit wurden Strategien zur Analyse von Transkripten erarbeitet. Die ersten Versuche zielten darauf ab, in mit Glaskapillaren genommenen Einzelzellproben verschiedener Gewebeschichten RT-PCR durchzuf{\"u}hren, um spezifische Transkripte nachweisen zu k{\"o}nnen. Dies gelang f{\"u}r eine Reihe von Genen aus verschiedenen Pflanzenspezies. Dabei konnten sowohl Transkripte stark wie auch schwach exprimierter Gene nachgewiesen werden. F{\"u}r die Erstellung von Gewebe-spezifischen Expressionsprofilen war es notwendig, die in vereinigten Zellproben enthaltene mRNA zun{\"a}chst zu amplifizieren, um eine ausreichende Menge f{\"u}r Arrayhybridisierungen zu erhalten. Vor der Vermehrung wurde die mRNA revers transkribiert. Es wurden daran anschließend verschiedene Amplifikationsstrategien getestet: Die neben Tailing, Adapterligation und anderen PCR-basierenden Protokollen getestete Arbitrary-PCR hat sich in dieser Arbeit als einfache und einzige Methode herausgestellt, die mit so geringen cDNA-Mengen reproduzierbar arbeitet. Durch Gewebe-spezifische Array-hybridisierungen mit der so amplifizierten RNA konnten schon bekannte Expressionsmuster verschiedener Gene, vornehmlich solcher, die an der Photosynthese beteiligt sind, beobachtet werden. Es wurden aber auch eine ganze Reihe neuer offensichtlich Gewebe-spezifisch exprimierter Gene gefunden. Exemplarisch f{\"u}r die differentiell exprimierten Gene konnte das durch Arrayhybridisierungen gefundene Expressionsmuster der kleinen Untereinheit von Rubisco verifiziert werden. Hierzu wurden Methoden zum Gewebe-spezifischen Northernblot sowie semiquantitativer und Echtzeit-Einzelzell-RT-PCR entwickelt. Im zweiten Teil der Arbeit wurden Methoden zur Analyse von Metaboliten einschließlich anorganischer Ionen verwendet. Es stellte sich heraus, daß die multiparallele Methode der Gaschromatographie-Massenspektrometrie keine geeignete Methode f{\"u}r die Analyse selbst vieler vereinigter Zellinhalte ist. Daher wurde auf Kapillarelektrophorese zur{\"u}ckgegriffen. Eine Methode, die mit sehr kleinen Probenvolumina auskommt, eine hohe Trennung erzielt und zudem extrem geringe Detektionslimits besitzt. Die Analyse von Kohlenhydraten und Anionen erfordert eine weitere Optimierung. {\"U}ber UV-Detektion konnte die K+-Konzentration in verschiedenen Geweben von A. thaliana bestimmt werden. Sie lag in Epidermis und Mesophyll mit ca. 25 mM unterhalb der f{\"u}r andere Pflanzenspezies (Solanum tuberosum und Hordeum vulgare) publizierten Konzentration. Weiter konnte gezeigt werden, daß zw{\"o}lf freie Aminos{\"a}uren mittels einer auf Kapillarelektrophorese basierenden Methode in vereinigten Zellproben von Cucurbita maxima identifiziert werden konnten. Die {\"U}bertragung der Methode auf A. thaliana-Proben muß jedoch weiter optimiert werden, da die Sensitivit{\"a}t selbst bei Laser induzierter Fluoreszenz-Detektion nicht ausreichte. Im dritten und letzten Teil der Arbeit wurde eine Methode entwickelt, die die Analyse bekannter wie unbekannter Proteine in Gewebe-spezifischen Proben erm{\"o}glicht. Hierzu wurde zur Probennahme mittels mechanischer Mikrodissektion eine alternative Methode zur Laser Capture Microdissection verwendet, um aus eingebetteten Gewebeschnitten distinkte Bereiche herauszuschneiden und somit homogenes Gewebe anzureichern. Aus diesem konnten die Proteine extrahiert und {\"u}ber Polyacrylamidgelelektrophorese separariert werden. Banden konnten ausgeschnitten, tryptisch verdaut und massenspektrometrisch die Prim{\"a}rsequenz der Peptidfragmente bestimmt werden. So konnten als Hauptproteine im Mesophyll die große Untereinheit von Rubisco sowie ein Chlorophyll bindendes Protein gefunden werden. Die in dieser Arbeit entwickelten und auf die Modellpflanze Arabidopsis thaliana angewandten Einzelzellanalysetechniken erlauben es in Zukunft, physiologische Prozesse besser sowohl r{\"a}umlich als auch zeitlich aufzul{\"o}sen. Dies wird zu einem detaillierteren Verst{\"a}ndnis mannigfaltiger Vorg{\"a}nge wie Zell-Zell-Kommunikation, Signalweiterleitung oder Pflanzen-Pathogen-Interaktionen f{\"u}hren.},
  language  = {de}
}
@book{BeierHeilmann2001,
  author    = {Beier, Wolfgang and Heilmann, Dieter},
  title     = {Wiederfund von Meloe coriarius (Brandt\&Erichson, 1832 (Col., Meloidae) f{\"u}r Deutschland sowie Nachweise weiterer bemerkenswerter K{\"a}ferarten bei Lebus an der Oder (Land Brandenburg)},
  year      = {2001},
  language  = {de}
}
@article{Greil2001,
  author    = {Greil, Holle},
  title     = {Wie weit sind wir der DIN 33402 entwachsen?},
  series = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  volume    = {10},
  journal   = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  issn      = {1434-2375},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-3870},
  pages     = {7 -- 22},
  year      = {2001},
  language  = {de}
}
@article{Greil2001,
  author    = {Greil, Holle},
  title     = {Wie weit sind wir der DIN 33402 entwachsen ?},
  year      = {2001},
  language  = {de}
}
@article{Greil2001,
  author    = {Greil, Holle},
  title     = {Wachstum und Variabilit{\"a}t im K{\"o}rperbau unter Ber{\"u}cksichtigung bei industriellen Gr{\"o}ßensystemen},
  year      = {2001},
  language  = {de}
}
@article{Greil2001,
  author    = {Greil, Holle},
  title     = {Wachstum und Variabilit{\"a}t im K{\"o}rperbau und ihre Ber{\"u}cksichtigung bei industriellen Gr{\"o}ßensystemen},
  series = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  volume    = {10},
  journal   = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  issn      = {1434-2375},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-3901},
  pages     = {62 -- 76},
  year      = {2001},
  language  = {de}
}
@article{Kummer2001,
  author    = {Kummer, Volker},
  title     = {Vor 125 Jahren tagte der Botanische Verein der Provinz Brandenburg in L{\"u}bben},
  year      = {2001},
  language  = {de}
}
@article{StottmeisterWeissbrodtTittel2001,
  author    = {Stottmeister, Ulrich and Weißbrodt, Erika and Tittel, J{\"o}rg},
  title     = {Von der Altlast zum See : nat{\"u}rliche Selbstreinigung},
  year      = {2001},
  language  = {de}
}
@article{Scheffler2001,
  author    = {Scheffler, Christiane},
  title     = {Vergleich ausgew{\"a}hlter Bewegungsabl{\"a}ufe beim Menschen in Abh{\"a}ngigkeit vom Alter und K{\"o}rperbau},
  isbn      = {3-89873-228-2},
  year      = {2001},
  language  = {de}
}
@phdthesis{Wolters2001,
  author    = {Wolters, Steffen},
  title     = {Vegetationsgeschichtliche Untersuchungen zur sp{\"a}tglazialen und holoz{\"a}nen Landschaftsentwicklung in der D{\"o}britzer Heide (Brandenburg)},
  pages     = {179 S. : Anh.},
  year      = {2001},
  language  = {de}
}
@article{Gzik2001,
  author    = {Gzik, Axel},
  title     = {Uptake, transport and effects of heavy metals in higher plants},
  year      = {2001},
  language  = {en}
}
@phdthesis{Mohr2001,
  author    = {Mohr, Silvia},
  title     = {Trophic interactions between two Brachionus species and protozoans},
  pages     = {79 S.},
  year      = {2001},
  language  = {en}
}
@article{Fischer2001,
  author    = {Fischer, Markus},
  title     = {The role of vegetative spread and seed dispersal for optimal life histories of clonal plants : a simulation study},
  year      = {2001},
  language  = {en}
}
@article{WeithoffWalzGaedke2001,
  author    = {Weithoff, Guntram and Walz, Norbert and Gaedke, Ursula},
  title     = {The intermediate disturbance hypothesis : species diversity or functional diversity},
  year      = {2001},
  abstract  = {Phytoplankton dynamics in a shallow eutrophic lake were investigated over a 3-year period with respect to environmental forces which drive species composition and diversity. Diversity was calculated on the basis of species as well as on the basis of their functional properties (the C-R-S-concept). Stratification and water column mixing had a strong impact on phytoplankton composition. Application of a similarity-diversity model revealed that a high diversity was a transient non-stable state, whereas drastic changes or long-lasting stable environmental conditions are characterized by low diversity. This effect was more pronounced when the diversity was calculated on the basis of the phytoplankton species functional properties. Thus, this functional approach supports the intermediate disturbance hypothesis from field data.},
  language  = {en}
}
@phdthesis{Hobson2001,
  author    = {Hobson, Dagmar},
  title     = {The importance of having a backbone: contribution of RNA backbone groups to the affinity and specificity of the MS2 coat protein-operator complex},
  pages     = {112 S.},
  year      = {2001},
  language  = {en}
}
@article{HermanussenGreilBlahaetal.2001,
  author    = {Hermanussen, Michael and Greil, Holle and Blaha, Pawel and Vignerova, Jana},
  title     = {The impact of the social group on growth},
  isbn      = {3-89873-228-2},
  year      = {2001},
  language  = {en}
}
@article{BaumannWalz2001,
  author    = {Baumann, Otto and Walz, Bernd},
  title     = {The endoplasmic reticulum of animal cells and its organization into structural and functional domains},
  year      = {2001},
  language  = {en}
}
@article{FischerKeryMatthies2001,
  author    = {Fischer, Markus and K{\´e}ry, M. and Matthies, D.},
  title     = {The effect of plant population size on the interactions between the rare plant Gentiana cruciata and its specialized herbivore Maculinea rebeli},
  year      = {2001},
  language  = {en}
}
@article{YuKoflerHaeusleretal.2001,
  author    = {Yu, Tien-Shin and Kofler, Heike and H{\"a}usler, Rainer E. and Hille, Diana and Fl{\"u}gge, Ulf-Ingo and Zeeman, Samuel C. and Smith, Alison M. and Kossmann, Jens and Lloyd, James R. and Ritte, Gerhard and Steup, Martin and Lue, Wei-Ling and Chen, Jychian and Weber, Andreas P. M.},
  title     = {The Arabidopsis sex1 mutant is defective in the R1 protein, a general regulator of starch degradation in plants, and not in the chloroplast hexose transporter},
  issn      = {1040-4651},
  year      = {2001},
  language  = {en}
}
@article{KoroljovaStepanovaBinukovetal.2001,
  author    = {Koroljova, Olga V. and Stepanova, Elena V. and Binukov, Vladimir I. and Timofeev, Vladimir P. and Pfeil, Wolfgang},
  title     = {Temperature-induced changes in copper centers and protein conformation of two fungal laccases from Coriolus hirsutus and Coriolus zonatus},
  year      = {2001},
  language  = {en}
}
@article{NothGreilLangeetal.2001,
  author    = {Noth, Veronika and Greil, Holle and Lange, Elke and Scheffler, Christiane},
  title     = {Strategien zur Handhabung von Verschl{\"u}ssen im Kleinkind- und Vorschulalter},
  year      = {2001},
  language  = {de}
}
@article{NothGreilScheffleretal.2001,
  author    = {Noth, Veronika and Greil, Holle and Scheffler, Christiane and Lange, E.},
  title     = {Strategien bei der Handhabung von Verschl{\"u}ssen im Kleinkind- und Vorschulalter},
  series = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  volume    = {10},
  journal   = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  issn      = {1434-2375},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-3916},
  pages     = {77 -- 86},
  year      = {2001},
  language  = {de}
}
@article{Greil2001,
  author    = {Greil, Holle},
  title     = {Stadien des biologischen Alters und ihre Einsch{\"a}tzung mit Hilfe von Felduntersuchungen},
  isbn      = {3-89873-228-2},
  year      = {2001},
  language  = {de}
}
@article{JeltschMoloney2001,
  author    = {Jeltsch, Florian and Moloney, Kirk A.},
  title     = {Spatially-explicit vegetation models : what have we learned ?},
  year      = {2001},
  language  = {en}
}
@article{NeumaerkerGreilBruemmerhoffetal.2001,
  author    = {Neum{\"a}rker, Klaus-J{\"u}rgen and Greil, Holle and Br{\"u}mmerhoff, A. and Bzufka, M. W. and Dudeck, U. and Neum{\"a}rker, U. and Rohde, W. and Fallgatter, A. J. and Jabs, B. and Pfuhlmann, B. and Bartsch, Andreas J.},
  title     = {Somatotypspezifische Anthropometrie und Essst{\"o}rungen},
  year      = {2001},
  language  = {de}
}
@article{LisdatGeMeyerhoffetal.2001,
  author    = {Lisdat, Fred and Ge, Bixia and Meyerhoff, M. E. and Scheller, Frieder W.},
  title     = {Signal chains with cytochromes at SAM modified gold electrodes},
  year      = {2001},
  language  = {en}
}
@phdthesis{Rachold2001,
  author    = {Rachold, Volker},
  title     = {Sediment pathways and budgets of the laptev sea region, siberian articic-implications for arctic land-ocean interactions},
  pages     = {229 S.},
  year      = {2001},
  language  = {en}
}
@article{DuevelRistowScholz2001,
  author    = {D{\"u}vel, Martina and Ristow, Michael and Scholz, Hildemar},
  title     = {Scolochloa marchica sp. nova : ein neues R{\"o}hrichtgras aus Mitteleuropa},
  issn      = {0014-8962},
  year      = {2001},
  language  = {de}
}
@article{Burkart2001,
  author    = {Burkart, Michael},
  title     = {River corridor plants (Stromtalpflanzen) in Central European lowland : a review of a poorly understood plant distribution pattern},
  year      = {2001},
  abstract  = {Aim and Location In Central European lowland certain plant species grow mainly or exclusively in the corridors of large rivers. In German-speaking plant geography, they are known as "Stromtalpflanzen". The aim of this paper is to review the literature about definitions, explanations and species characteristics and to suggest future directions in research concerning this species group. Results A preliminary list contains 129 ecologically heterogeneous plant species. The mechanisms generating the peculiar distribution pattern may include hydrochory along river corridors, high level of disturbance by water, variable water availability including inundation and summer drought, warm summers, and high nutrient supply on alluvial soils. There is evidence from observational studies for all above mechanisms. However, none of them has been tested experimentally. Demographic data of river corridor plants is limited to very few species, including mainly invasive annuals (Artemisia annua, Bidens frondosa, Cuscuta campestris, Xanthium albinum) and annual (hemi)parasites (Cuscuta campestris, Melampyrum cristatum). Metapopulation studies do not exist to date for European species. part from their habitat requirements, river corridor plants were grouped according to their similarities in overall distribution pattern or in their distribution within particular river corridors. Main conclusions River corridor plants include a high proportion of threatened plant species. In order to preserve them, and in order to understand the mechanisms generating the peculiar distribution pattern, much more has to be known about their population biology and metapopulation dynamics.},
  language  = {en}
}
@article{AltmannThimmEssigmannetal.2001,
  author    = {Altmann, Thomas and Thimm, O. and Essigmann, B. and Kloska, Sebastian and Buckhout, Thomas J.},
  title     = {Response of arabidopsis to iron deficiency stress as revealed by microarray analysis},
  year      = {2001},
  language  = {en}
}
@article{SchellerWollenbergerWarsinkeetal.2001,
  author    = {Scheller, Frieder W. and Wollenberger, Ursula and Warsinke, Axel and Lisdat, Fred},
  title     = {Research and development in biosensors},
  year      = {2001},
  language  = {en}
}
@article{WagnerKamjunke2001,
  author    = {Wagner, Annekatrin and Kamjunke, Norbert},
  title     = {Reduction of the filtration rate of Daphnia galeata by dissolved photosynthetic products of edible phytoplankton},
  year      = {2001},
  abstract  = {The filtration rate of Daphnia galeata was determined in in situ experiments in Bautzen Reservoir and in laboratory experiments, where daphnids were exposed to filtrates that previously contained either natural phytoplankton or cultured eukaryotic algae (Scenedesmus obliquus or Asterionella formosa), respectively. Individual filtration rate (FR) was measured using fluorescent beads, taking into account ingested beads in the gut only. Compared to heated control treatments (100°C), dissolved compounds released by the nutritious cultured algae during the preconditioning phase or by the natural phytoplankton assemblages from Bautzen Reservoir strongly reduced the filtration rate of D. galeata (down to 60 \%). Heating deactivated these dissolved compounds. A significant correlation was found between primary production measured in situ and the reduction of FR in the filtrate of reservoir water, indicating that extra- cellular products released during photosynthesis triggered the reduction of the filtration rate. The ratio of ingested to collected beads was used to quantify the proportion of food, which was not only collected but passed the mouth of D. galeata. The ratio of ingestion to collection was compared between filtered and unfiltered reservoir water both media identical with respect to the concentration of dissolved compounds, whereas other factors (e. g. food concentration, temperature, filtration rate) were different. The changes in this ratio between filtered and unfiltered reservoir water suggest that D. galeata is capable of a chemosensory control of the ingestion behaviour by detecting external metabolites.},
  language  = {en}
}
@article{RosePfeifferSchelleretal.2001,
  author    = {Rose, Andreas and Pfeiffer, Dorothea and Scheller, Frieder W. and Wollenberger, Ursula},
  title     = {Quinoprotein glucose dehydrogenasemodified thick-film electrodes for the amperometric detection of phenolic compounds in flow injection analysis},
  year      = {2001},
  language  = {en}
}
@book{Pfeil2001,
  author    = {Pfeil, Wolfgang},
  title     = {Protein stability and folding : a collecton of thermodynamic data ; Supplement 1},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {3-540-42168-8},
  pages     = {XIV, 521 S.},
  year      = {2001},
  language  = {en}
}
@article{Baumann2001,
  author    = {Baumann, Otto},
  title     = {Posterior midgut epithelial cells differ in their organization of the membrane skeleton from other Drosophila epithelia},
  year      = {2001},
  language  = {en}
}
@misc{WackervonElert2001,
  author    = {Wacker, Alexander and von Elert, Eric},
  title     = {Polyunsaturated fatty acids : evidence for non-substitutable biochemical resources in Daphnia galeata},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17587},
  year      = {2001},
  abstract  = {The factors that determine the efficiency of energy transfer in aquatic food webs have been investigated for many decades. The plant-animal interface is the most variable and least predictable of all levels in the food web. In order to study determinants of food quality in a large lake and to test the recently proposed central importance of the long-chained eicosapentaenoic acid (EPA) at the pelagic producer-grazer interface, we tested the importance of polyunsaturated fatty acids (PUFAs) at the pelagic producerconsumer interface by correlating sestonic food parameters with somatic growth rates of a clone of Daphnia galeata. Daphnia growth rates were obtained from standardized laboratory experiments spanning one season with Daphnia feeding on natural seston from Lake Constance, a large pre-alpine lake. Somatic growth rates were fitted to sestonic parameters by using a saturation function. A moderate amount of variation was explained when the model included the elemental parameters carbon (r2 = 0.6) and nitrogen (r2 = 0.71). A tighter fit was obtained when sestonic phosphorus was incorporated (r2 = 0.86). The nonlinear regression with EPA was relatively weak (r2 = 0.77), whereas the highest degree of variance was explained by three C18-PUFAs. The best (r2 = 0.95), and only significant, correlation of Daphnia's growth was found with the C18-PUFA α-linolenic acid (α-LA; C18:3n-3). This correlation was weakest in late August when C:P values increased to 300, suggesting that mineral and PUFA-limitation of Daphnia's growth changed seasonally. Sestonic phosphorus and some PUFAs showed not only tight correlations with growth, but also with sestonic α-LA content. We computed Monte Carlo simulations to test whether the observed effects of α-LA on growth could be accounted for by EPA, phosphorus, or one of the two C18-PUFAs, stearidonic acid (C18:4n-3) and linoleic acid (C18:2n-6). With >99 \% probability, the correlation of growth with α-LA could not be explained by any of these parameters. In order to test for EPA limitation of Daphnia's growth, in parallel with experiments on pure seston, growth was determined on seston supplemented with chemostat-grown, P-limited Stephanodiscus hantzschii, which is rich in EPA. Although supplementation increased the EPA content 80-800x, no significant changes in the nonlinear regression of the growth rates with α-LA were found, indicating that growth of Daphnia on pure seston was not EPA limited. This indicates that the two fatty acids, EPA and α-LA, were not mutually substitutable biochemical resources and points to different physiological functions of these two PUFAs. These results support the PUFA-limitation hypothesis for sestonic C:P < 300 but are contrary to the hypothesis of a general importance of EPA, since no evidence for EPA limitation was found. It is suggested that the resource ratios of EPA and α-LA rather than the absolute concentrations determine which of the two resources is limiting growth.},
  language  = {en}
}
@article{WackervonElert2001,
  author    = {Wacker, Alexander and von Elert, Eric},
  title     = {Polyunsaturated fatty acids : evidence for non-substitutable biochemical resources in daphnia galeata},
  year      = {2001},
  abstract  = {The factors that determine the efficiency of energy transfer in aquatic food webs have been investigated for many decades. The plant-animal interface is the most variable and least predictable of all levels in the food web. In order to study determinants of food quality in a large lake and to test the recently proposed central importance of the long-chained eicosapentaenoic acid (EPA) at the pelagic producer-grazer interface, we tested the importance of polyunsaturated fatty acids (PUFAs) at the pelagic producer-consumer interface by correlating sestonic food parameters with somatic growth rates of a clone of Daphnia galeata. Daphnia growth rates were obtained from standardized laboratory experiments spanning one season with Daphnia feeding on natural seston from Lake Constance, a large pre-alpine lake. Somatic growth rates were fitted to sestonic parameters by using a saturation function. A moderate amount of variation was explained when the model included the elemental parameters carbon (r2 = 0.6) and nitrogen (r2 = 0.71). A tighter fit was obtained when sestonic phosphorus was incorporated (r2 = 0.86). The nonlinear regression with EPA was relatively weak (r2 = 0.77), whereas the highest degree of variance was explained by three C18-PUFAs. The best (r2 = 0.95), and only significant, correlation of Daphnia's growth was found with the C18-PUFA a-linolenic acid (a-LA; C18:3n-3). This correlation was weakest in late August when C:P values increased to 300, suggesting that mineral and PUFA- limitation of Daphnia's growth changed seasonally. Sestonic phosphorus and some PUFAs showed not only tight correlations with growth, but also with sestonic alpha-LA content. We computed Monte Carlo simulations to test whether the observed effects of alpha-LA on growth could be accounted for by EPA, phosphorus, or one of the two C18-PUFAs, stearidonic acid (C18:4n-3) and linoleic acid (C18:2n-6). With >99\% probability, the correlation of growth with alpha-LA could not be explained by any of these parameters. In order to test for EPA limitation of Daphnia's growth, in parallel with experiments on pure seston, growth was determined on seston supplemented with chemostat-grown, Plimited Stephanodiscus hantzschii, which is rich in EPA. Although supplementation increased the EPA content 80-800x, no significant changes in the nonlinear regression of the growth rates with alpha-LA were found, indicating that growth of Daphnia on pure seston was not EPA limited. This indicates that the two fatty acids, EPA and alpha-LA, were not mutually substitutable biochemical resources and points to different physiological functions of these two PUFAs. These results support the PUFA-limitation hypothesis for sestonic C:P < 300 but are contrary to the hypothesis of a general importance of EPA, since no evidence for EPA limitation was found. It is suggested that the resource ratios of EPA and alpha-LA rather than the absolute concentrations determine which of the two resources is limiting growth.},
  language  = {en}
}
@article{AlbrechtKochLodeetal.2001,
  author    = {Albrecht, Tanja and Koch, Anke and Lode, Anja and Greve, Burkhard and Schneider-Mergener, Jens and Steup, Martin},
  title     = {Plastidic (Pho1-type) phosphorylase isoforms in potato (Solanum tuberosum L.) plants : expression analysis and immunochemical characterization},
  year      = {2001},
  language  = {en}
}
@article{AltmannKossmann2001,
  author    = {Altmann, Thomas and Koßmann, Jens},
  title     = {Photosynthesis and primary metabolism},
  issn      = {1360-1385},
  year      = {2001},
  language  = {en}
}
@article{AltmannNarang2001,
  author    = {Altmann, Thomas and Narang, R. A.},
  title     = {Phosphate accquisition heterosis in Arabidopsis thaliana : a morphological and physiological analysis},
  year      = {2001},
  language  = {en}
}
@phdthesis{Steidel2001,
  author    = {Steidel, Gunnar},
  title     = {Nutzung erlernter Verhaltenselemente zur Indikation populationsbiologischer Beziehungen des Karmingimpels (Carpodacus erythrinus)},
  pages     = {111, XXII S.},
  year      = {2001},
  language  = {de}
}
@article{LisdatGeKrauseetal.2001,
  author    = {Lisdat, Fred and Ge, Bixia and Krause, B. and Ehrlich, A. and Bienert, H. and Scheller, Frieder W.},
  title     = {Nucleic acid-promoted electron transfer to cytochrome c},
  year      = {2001},
  language  = {en}
}
@article{KoechyWilson2001,
  author    = {K{\"o}chy, Martin and Wilson, Scott D.},
  title     = {Nitrogen deposition and forest expansion in the northern Great Plains},
  year      = {2001},
  abstract  = {1 Atmospheric nitrogen (N) deposition has become one of the most important agents of vegetation change in densely populated regions, It may also contribute to forest expansion into grasslands at the northern edge of the North American Great Plains. 2 We measured N deposition and available soil N with ion-exchange resin over 2 years in six national parks in areas varying in population density and industrialization. N deposition was significantly higher in four parks in densely populated regions than in two remote parks. 3 Available soil N increased significantly with N deposition across all parks. 4 We measured N mass and N-15 abundance (delta N-15) in vegetation and soil in two parks: Elk Island, receiving 22 kg N ha(-1) year(-1), and Jasper, receiving 8 kg N ha(-1) year(-1). Differences between parks in tissue N concentrations were small, but forest expansion over five decades resulted in the mass of N in vegetation increasing by 74\% in Elk Island but by only 26\% in Jasper. delta N-15 in forest vegetation was significantly lower in Elk Island than in Jasper, suggesting that anthropogenic sources contribute significantly to the high rates of N entering that ecosystem. 5 We determined the rate of forest expansion within parks using six decades of aerial photographs, Parks in aspen parkland and boreal forest showed a strong positive relationship between forest expansion and N deposition. The relationships found between N deposition, available soil N and forest expansion suggest that even comparatively low rates of N deposition may accelerate the expansion of forest into temperate grasslands.},
  language  = {en}
}
@article{HairstonHoltmeierLampertetal.2001,
  author    = {Hairston, Nelson G. and Holtmeier, C. L. and Lampert, W. and Weider, L. J. and Post, D. M. and Fischer, J. M. and Caceres, C. E. and Fox, J. A. and Gaedke, Ursula},
  title     = {Natural selection for grazer resistance to toxic cyanobacteria: Evolution of phenotypic plasticity?},
  year      = {2001},
  language  = {en}
}
@article{SchmidtMatthesSchelleretal.2001,
  author    = {Schmidt, Peter Michael and Matthes, E. and Scheller, Frieder W. and Bier, Frank Fabian},
  title     = {Nachweis der Telomeraseaktivit{\"a}t in Zellkulturen mittels eines faseroptischen Sensors},
  year      = {2001},
  language  = {de}
}
@article{PecherSpahnSchirrmannetal.2001,
  author    = {Pecher, Gabriele and Spahn, Gunter and Schirrmann, Thomas and Kulbe, Hagen and Ziegner, Maja and Schenk, J{\"o}rg A. and Sandig, Volker},
  title     = {Mucin gene (MUC1) transfer into human dendritic cells by cationic liposomes and recombinant adenovirus},
  issn      = {0250-7005},
  year      = {2001},
  abstract  = {BACKGROUND: Dendritic cells (DC) as antigen presenting cells play an important role in immunotherapy of cancer. Mucin, encoded by the gene MUC1, is a human tumor antigen expressed in breast, pancreatic and ovarian cancers. Therefore, MUC1-transfected DC would be an attractive tool in constructing cancer vaccines. MATERIALS AND METHODS: Using two different cationic liposome preparations and, for comparison, a recombinant adenovirus expressing mucin, we tested the efficiency of mucin gene transfer into DC by flow cytometry. We investigated if these transfected DC were able to specifically stimulate autologous peripheral blood lymphocytes (PBL) from healthy donors. RESULTS: Flow cytometry revealed that 5-20\% of DC transfected with liposomes Lipofectin and 20-40\% of DC transduced with adenovirus expressed the relevant mucin epitopes. The expression of mucin on DC was similar to the expression of mucin found on carcinoma cells. After antigen uptake, DC specifically stimulated autologous PBL. CONCLUSION: We have shown that cationic liposomal gene transfer into human DC was feasible. We could obtain antigen specific stimulation of PBL at a similar rate as with adenoviral MUC1-transduced DC.},
  language  = {en}
}
@phdthesis{Gipmans2001,
  author    = {Gipmans, Martijn},
  title     = {Molecular genetic apporoaches to study cell wall biosynthesis in arabidopsis thaliana},
  pages     = {88 S.},
  year      = {2001},
  language  = {en}
}
@article{BlenauBaumann2001,
  author    = {Blenau, Wolfgang and Baumann, Arnd},
  title     = {Molecular and pharmacological properties of insect biogenic amine receptors : lessons from Drosophila melanogaster and Apis mellifera},
  issn      = {0739-4462},
  year      = {2001},
  language  = {en}
}
@article{LehmannWollenbergerBrigeliusFloheetal.2001,
  author    = {Lehmann, Claudia and Wollenberger, Ursula and Brigelius-Floh{\´e}, Regina and Scheller, Frieder W.},
  title     = {Modified gold electrodes for electrochemical studies of the reaction phospholipid hydroperoxide glutathione peroxidas with glutathione and glutathione disulfide},
  year      = {2001},
  language  = {en}
}
@phdthesis{Hansen2001,
  author    = {Hansen, Frank},
  title     = {Modellierung der raum-zeittlichen Dynamik des Fuchsbandwurms (Echinococcus multilocularis)},
  pages     = {159 S.},
  year      = {2001},
  language  = {de}
}
@article{BenkertMicheelSchoessleretal.2001,
  author    = {Benkert, Alexander and Micheel, Burkhard and Sch{\"o}ssler, W. and Warsinke, Axel},
  title     = {Mischen und gleich messen : creatinin spezifisch und einfach bestimmen mit den Size exclusion redox-labeled immunoassay},
  year      = {2001},
  language  = {de}
}
@article{Schneider2001,
  author    = {Schneider, Ingo},
  title     = {Microbiological and Enzymatic Inverstigations of soils in the Rustenburg Mining Area},
  year      = {2001},
  abstract  = {In soils of the Rustenbug Minig Area microorganism concentration and activity of several enzymes (dehydrogenase, phosphatase, protease, amylase, cellulase, xylanase) were determined. First results indicate an increase of heavy metal resistant Microorganisms and a possible inhibition of carbohydrate degrading enzymes.},
  language  = {en}
}
@phdthesis{Roessner2001,
  author    = {Roessner, Ute},
  title     = {Metabolic profiling of ransgenic potato tubers using GC-MS},
  pages     = {115 S.},
  year      = {2001},
  language  = {en}
}
@article{PrasseRistowKlemmetal.2001,
  author    = {Prasse, R{\"u}diger and Ristow, Michael and Klemm, Gunther and Machatzi, Bernd and Raus, Thomas and Scholz, Hildemar and Stohr, Gerrit and Sukopp, Herbert and Zimmermann, Friedrich},
  title     = {Liste der wildwachsenden Gef{\"a}ßpflanzen des Landes Berlin : mit Roter Liste},
  publisher = {Kulturbuch-Verl.},
  address   = {Berlin},
  isbn      = {3-88961-137-0},
  pages     = {85 S.},
  year      = {2001},
  language  = {de}
}
@article{Fischer2001,
  author    = {Fischer, Markus},
  title     = {Landscape dynamics can accelerate metapopulation extinction},
  year      = {2001},
  language  = {en}
}
@article{FoellerVaterKoessl2001,
  author    = {Foeller, Elisabeth and Vater, Marianne and K{\"o}ssl, Manfred},
  title     = {Laminar analysis of inhibition in the gerbil primary auditory cortex.},
  issn      = {1525-3961},
  year      = {2001},
  language  = {en}
}
@article{Greil2001,
  author    = {Greil, Holle},
  title     = {K{\"o}rpermaße 2000},
  series = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  volume    = {10},
  journal   = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  issn      = {1434-2375},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-3889},
  pages     = {23 -- 53},
  year      = {2001},
  language  = {de}
}
@phdthesis{Schilitz2001,
  author    = {Schilitz, Anja},
  title     = {K{\"o}rperliche Entwicklung und K{\"o}rperzusammensetzung von Brandenburger Schulkindern im Geschlechter- und Altersgruppenvergleich},
  series = {Berichte aus der Biologie},
  journal   = {Berichte aus der Biologie},
  publisher = {Shaker},
  address   = {Aachen},
  isbn      = {3-8265-9290-5},
  issn      = {0945-0688},
  pages     = {101 S.},
  year      = {2001},
  language  = {de}
}
@article{KummerJentsch2001,
  author    = {Kummer, Volker and Jentsch, Helmut},
  title     = {Korrekturen und Nachtr{\"a}ge als Vorarbeit zu einer Flora des Spreewaldes},
  year      = {2001},
  language  = {de}
}
@article{Kummer2001,
  author    = {Kummer, Volker},
  title     = {Korrekturen und Erg{\"a}nzungen zur Pilzflora des Unteren Haveltales.-},
  year      = {2001},
  language  = {de}
}
@phdthesis{SimonRosin2001,
  author    = {Simon-Rosin, Ulrike},
  title     = {Isolation and characterisation of ammonium transporters from the module legumen : lotus japanicus},
  pages     = {85 S.},
  year      = {2001},
  language  = {en}
}
@article{AltmannFiehnKloska2001,
  author    = {Altmann, Thomas and Fiehn, Oliver and Kloska, Sebastian},
  title     = {Integrated studies on plant biology using multiparallel techniques},
  year      = {2001},
  language  = {en}
}
@article{UkhanovMillsPotteretal.2001,
  author    = {Ukhanov, Kyrill and Mills, S. J. and Potter, Barry V. L. and Walz, Bernd},
  title     = {InsP3-induced Ca2+ release in permeabilized invertebrate photoreceptors : a link between phototransduction and Ca2+ stores},
  year      = {2001},
  language  = {en}
}
@article{SchefflerJaeger2001,
  author    = {Scheffler, Christiane and Jaeger, Uwe},
  title     = {Industrieanthropologie},
  isbn      = {3-89873-228-2},
  year      = {2001},
  language  = {de}
}
@phdthesis{Machuy2001,
  author    = {Machuy, Nikolaus},
  title     = {Identifizierung und Charakterisierung von Pak2- Interaktionspartnern sowie deren Rolle bei der Apoptose unter besonderer Ber{\"u}cksichtigung der Caspaseprozessierung der Tyrinkinase c-Abl ; Entwicklung von Klonierungstechniken auf der Grundlage der Di/TriSec-Methode},
  pages     = {119 S.},
  year      = {2001},
  language  = {de}
}
@article{vanHunnikGarciaMendoza2001,
  author    = {van Hunnik, E. and Garcia Mendoza, E.},
  title     = {Identification and localization of a thylakoid-bound carbonic anhydrase from the green algae Tetraedron minimum (Chlorophyta) and Chlamydomonas noctigama (Chlorophyta)},
  year      = {2001},
  abstract  = {In order to broaden our understanding of the eukaryotic CO2- concentrating mechanism the occurrence and localization of a thylakoid-asssocaate carbonic anhydrase (EC 4.2.1.1) were studied in the green algae Tetraedron on minimum and Chlamydomonas noctigama. Both algae induce a CO2-concentrating mechanism when grown under limiting CO2 conditions. Using mass- spectrometric measurements of O-18 exchange from doubly labelled CO2, the presence of a thylakoid-associated carbonic anhydrase was confirmed for both species. From purified thylakoid membranes, photosystem I (PSI), photosystem II (PSII) and the light-harvesting complex of the photosynthetic apparatus were isolated by mild detergent gel. The protein fractions were identified by 77 K fluorescence spectroscopy and immunological studies. A polypeptide was found to immunoreact with an antibody raised against thylakoid carbonic anhydrase (CAH3) from Chlamydomonas reinhardtii. It was found that this polypeptide was mainly associated with PSII, although a certain proportion was also connected to light harvesting complex II. This was confirmed by activity measurements of carbonic anhydrase in isolated bands extracted from the mild detergent gel. The thylakoid carbonic anhydrase isolated from T. minimum had an isoelectric point between 5.4 and 4.8. Together the results are consistent with the hypothesis that thylakoid carbonic anhydrase resides within the lumen where it is associated with the PSII complex.},
  language  = {en}
}
@article{FischerMuellerSchaerer2001,
  author    = {Fischer, Markus and M{\"u}ller-Sch{\"a}rer, H.},
  title     = {Genetic structure of the annual weed Senecio vulgaris in relation to habitat type and population size},
  year      = {2001},
  language  = {en}
}
@article{PecherHarnackGuntheretal.2001,
  author    = {Pecher, Gabriele and Harnack, U. and Gunther, M. and Hummel, M. and Fichtner, I. and Schenk, J{\"o}rg A.},
  title     = {Generation of an immortalized human CD4+ T cell clone inhibiting tumor growth in mice.},
  year      = {2001},
  abstract  = {Tumor antigen-specific T cell clones represent a useful tool in tumor immunology; however, their long-term culture is limited. To generate an immortalized cytotoxic T cell clone against the human tumor antigen mucin, we exposed a previously generated T cell culture to Herpesvirus saimiri. We obtained an immortalized human CD4+ T cell clone, termed SITAM. Clonality of these cells was shown by analysis of the alpha/beta-T cell receptor (TCR) repertoire. Cytolytic activity was demonstrated against several mucin-expressing tumor cell lines and could not be detected against non-mucin-expressing cells. SITAM cells maintained their features stably for 2 years. Furthermore, growth of the tumor cell line Capan-2 in NOD/SCID mice was inhibited when SITAM cells were coinjected subcutaneously with tumor cells. SITAM cells provide an unlimited source of clonal T cells for analysis of tumor recognition and may be of help in TCR-targeted immunotherapy.},
  language  = {en}
}
@article{KemmerVater2001,
  author    = {Kemmer, Michaela and Vater, Marianne},
  title     = {Functional organization of the dorsal cochlear nucleus of the horseshoe bat (Rhinolophus rouxi) studied by GABA and glycine immunocytochemistry and electron microscopy.},
  issn      = {0340-2061},
  year      = {2001},
  language  = {en}
}
@article{Kummer2001,
  author    = {Kummer, Volker},
  title     = {Exkursionsbericht "Exkursion zum S{\"u}dufer des Dolgener Sees und zum Schwarzen Luch bei Groß Leuthen" am 05.08.2000},
  year      = {2001},
  language  = {de}
}
@article{BaxaCooperWeintraubetal.2001,
  author    = {Baxa, Ulrich and Cooper, Alan and Weintraub, N. and Pfeil, Wolfgang and Seckler, Robert},
  title     = {Enthalpic barriers to the hydrophobic binding of oligosaccharides to phage P22 tailspike protein},
  year      = {2001},
  language  = {en}
}
@article{PecherSchirrmannKaiseretal.2001,
  author    = {Pecher, Gabriele and Schirrmann, Thomas and Kaiser, Lothar and Schenk, J{\"o}rg A.},
  title     = {Efficient cryopreservation of dendritic cells transfected with cDNA of a tumour antigen for clinical application},
  year      = {2001},
  abstract  = {Dendritic cells (DCs) are the most potent antigen-presenting cells of the immune system and are currently being investigated in clinical applications as cancer vaccines. An efficient cryopreservation method would greatly contribute to their use in clinical trials. We have established a method for freezing of DCs derived from peripheral blood mononuclear cells using the plasma expander Gelifundol. This enabled us to reduce the concentration of the toxic DMSO to 5\%. The method could be performed without the addition of fetal calf serum or any other serum. After freezing, the viability of the DCs was 90\%. The cells exhibited all the phenotypic characteristics (CD11c+, HLA-DR+, CD80+, CD83+, CD86+) of DCs, as tested by flow cytometry. Cells transfected with cDNA for the tumour antigen mucin expressed this protein on their surfaces in the same manner as before freezing. The stimulating capacity of a mixed lymphocyte culture was also preserved. These findings offer an efficient method for the cryopreservation of DCs for use in clinical trials.},
  language  = {en}
}
@article{LangWalz2001,
  author    = {Lang, Ingo and Walz, Bernd},
  title     = {Dopamine-induced epithelial K+ and Na+ movements in the salivary ducts of Periplaneta americana},
  year      = {2001},
  language  = {en}
}
@article{Baumann2001,
  author    = {Baumann, Otto},
  title     = {Distribution of nonmuscle myosin-II in honeybee photoreceptor cells and its possible role in maintaining compound eye architecture},
  year      = {2001},
  language  = {en}
}
@article{Baumann2001,
  author    = {Baumann, Otto},
  title     = {Disruption of actin filaments causes redistribution of ryanodine receptor Ca2+ channels in honeybee photoreceptor cells},
  year      = {2001},
  language  = {en}
}
@article{DubreuilGrushkoBaumann2001,
  author    = {Dubreuil, R. R. and Grushko, T. and Baumann, Otto},
  title     = {Differential effects of a labial mutation on the development, structure, and function of stomach acid-secreting cells in Drosophila larvae and adults},
  year      = {2001},
  language  = {en}
}
@article{Rose2001,
  author    = {Rose, Andreas},
  title     = {Development of a new biosensor for monitoring xenoestrogens},
  year      = {2001},
  language  = {en}
}
@article{VijgenboomVijgenboomTeppneretal.2001,
  author    = {Vijgenboom, E. and Vijgenboom, E. and Teppner, A. W. J. W. and Makower, Alexander and Scheller, Frieder W. and Canters, Gerard W. and Wollenberger, Ursula},
  title     = {Determination of phenolic compounds using recombinant tyrosinanse from Streptomyces antibioticus},
  year      = {2001},
  language  = {en}
}
@article{IgnatovGeSchelleretal.2001,
  author    = {Ignatov, S. and Ge, Bixia and Scheller, Frieder W. and Lisdat, Fred},
  title     = {Detection of the antioxidant activity detection of flavonoids by using superoxide sensor},
  isbn      = {1-58603-164-3},
  year      = {2001},
  language  = {en}
}
@article{WollenbergerJung2001,
  author    = {Wollenberger, Ursula and Jung, Christiane},
  title     = {Cytochrom P450-Elektrochemie},
  year      = {2001},
  language  = {de}
}
@article{KamjunkeMehner2001,
  author    = {Kamjunke, Norbert and Mehner, Thomas},
  title     = {Coupling the microbial food web with fish : are bacteria attached to cyanobacteria an important food source for underyearling roach?},
  year      = {2001},
  abstract  = {1. After observing that juvenile roach fed intensively on cyanobacteria and that cyanobacteria were densely colonized by heterotrophic bacteria, we tested whether the bacteria are used by underyearling roach and the extent to which they contribute to the energy requirements of the fish. 2. We radiolabeled attached bacteria in a natural cyanobacterial suspension, fed the fish with these particles, and estimated their assimilation by roach. Biomass of attached bacteria on cyanobacteria increased with the proportion of the cyanobacterium Microcystis in total cyanobacteria. Biomass-specific thymidine incorporation of attached bacteria was higher than that of free bacteria. 3. In feeding experiments, we detected assimilation of bacterial biomass into muscle tissue of underyearling roach. Fish consumed Microcystis to a lesser extent compared to Aphanizomenon but assimilation of attached bacteria was higher when roach fed on Microcystis due to the higher biomass of epibacteria on this cyanobacterium. However, biomass of attached bacteria was too low to be an important food source for underyearling roach. 4. We conclude that assimilation of epibacteria from cyanobacteria cannot explain the success of roach in eutrophic lakes.},
  language  = {en}
}
@article{SchellerBauerMarkoweretal.2001,
  author    = {Scheller, Frieder W. and Bauer, Christian G. and Markower, Alexander and Wollenberger, Ursula and Warsinke, Axel and Bier, Frank Fabian},
  title     = {Coupling of immunoassays with enzymatic recycling electrodes},
  year      = {2001},
  language  = {en}
}
@article{HockScheller2001,
  author    = {Hock, Bertold and Scheller, Frieder W.},
  title     = {Conclusions and outlook},
  year      = {2001},
  language  = {en}
}
@article{PeltzerKoechy2001,
  author    = {Peltzer, Duane and K{\"o}chy, Martin},
  title     = {Competitive effects of grasses and woody plants in mixed-grass prairie},
  year      = {2001},
  abstract  = {Variation in the competitive ability of plant species is suggested to determine their persistence and abundance in communities. In this study, we examine competition between grasses and woody plants, a phenomenon that occurs word-wide in savannas and along the margins between grasslands and forests. Specifically, we quantified the per- gram competitive effects of grasses and woody plants in native mixed-grass prairie by manipulating the natural vegetation. We separated the competitive effects of grasses, shrubs, and intact vegetation using selective herbicides to create four competition treatments: no neighbours (NN), no shrubs (NS), no grasses (NG), and all neighbours (AN). Competition treatments were applied to 2m x 2m experimental plots located in either prairie- or shrub- dominated habitats. Herbicides were applied starting one year prior to the study to create the four competition treatments. The effects of grasses and shrubs on resource availability (light, water, nitrogen) and the growth of two transplant species, Bouteloua gracilis, a perennial tussock grass, and Elaeagnus commutata, a common shrub, were measured over two growing seasons. Resource availability (i.e. light, soil moisture, soil available nitrogen) was two- to tenfold higher in no neighbour (NN) plots than in vegetated plots (NS, NG, AN). Both grasses and shrubs reduced resource levels to about the same extent. Light penetration declined linearly with increasing grass or shrub biomass, to a minimum of about 30\% incident light at 500 g/m² neighbour shoot mass. Soil resources (i.e. water, nitrogen) did not decline with increasing neighbour shoot or root mass for either grasses or shrubs. Thus, for soil resources, the presence of neighbours was more important than their mass (i.e. abundance). Transplant growth did not decline with increasing neighbour biomass; the only exception to this pattern was a linear decline in Bouteloua growth with increasing neighbour shoot mass in plots containing only shrubs (NG). Competition was equally intense in prairie-dominated and shrub-dominated habitats for transplants of Bouteloua, but was less intense in shrub-dominated habitats for the shrub Elaeagnus. These results raise the interesting possibility that variation in the persistence and abundance of plants in communities is more strongly controlled by variation in competitive effects than by differences in competitive response ability.},
  language  = {en}
}
@phdthesis{Farre2001,
  author    = {Farre, Eva M.},
  title     = {Compartementation in potato tubers},
  pages     = {147 S.},
  year      = {2001},
  language  = {en}
}
@phdthesis{Zeh2001,
  author    = {Zeh, Michaela},
  title     = {Charakterisierung der Methioninsynthase und funktionelle Analyse der Theoininsynthase aus Kartoffel (Solanum tuberosum L.) : unter besonderer Ber{\"u}cksichtigung ihrer Bedeutung f{\"u}r die Regulation der Methioninbiosynthese},
  pages     = {100 S.},
  year      = {2001},
  language  = {de}
}
@phdthesis{Gerten2001,
  author    = {Gerten, Dieter},
  title     = {Changes in the thermal proberties and the seasonal plankton succession in lakes : the role of climate warming and the north atlantic oscillation},
  pages     = {104 S.},
  year      = {2001},
  language  = {en}
}
@article{KemmerVater2001,
  author    = {Kemmer, Michaela and Vater, Marianne},
  title     = {Cellular and subcellular distribution of AMPA-type glutamate receptor subunits and metabotropic glutamate receptor 1alpha in the cochlear nucleus of the horseshoe bat (Rhinolophus rouxi).},
  issn      = {0378-5955},
  year      = {2001},
  language  = {en}
}
@phdthesis{Hielscher2001,
  author    = {Hielscher, Kati},
  title     = {Brutvogelgemeinschaften in Niedermooren und Habitatwahl des Schilfrohrs{\"a}ngers (Acrocephalus schoenobaenus)},
  pages     = {143 S.},
  year      = {2001},
  language  = {de}
}
@article{AltmannMuessig2001,
  author    = {Altmann, Thomas and M{\"u}ssig, Carsten},
  title     = {Brassinosteroid signaling in plants},
  year      = {2001},
  language  = {en}
}
@article{Scheller2001,
  author    = {Scheller, Frieder W.},
  title     = {Biosensoren auf dem Weg zur Biochip-Technologie},
  year      = {2001},
  language  = {de}
}
@article{Scheller2001,
  author    = {Scheller, Frieder W.},
  title     = {Biomolek{\"u}le als Reporter in der Analytik : keine Forschung im Elfenbeinturm},
  year      = {2001},
  language  = {de}
}
@article{BergholzHeymannSchenketal.2001,
  author    = {Bergholz, Andr{\´e} and Heymann, Stephan and Schenk, J{\"o}rg A. and Freytag, Johann Christoph},
  title     = {Biological sequences integrated: a relational database approach},
  year      = {2001},
  abstract  = {Over the last decade the modeling and the storage of biological data has been a topic of wide interest for scientists dealing with biological and biomedical research. Currently most data is still stored in text files which leads to data redundancies and file chaos. In this paper we show how to use relational modeling techniques and relational database technology for modeling and storing biological sequence data, i.e. for data maintained in collections like EMBL or SWISS-PROT to better serve the needs for these application domains. For this reason we propose a two step approach. First, we model the structure (and therefore the meaning of the) data using an Entity-Relationship approach. The ER model leads to a clean design of a relational database schema for storing and retrieving the DNA and protein data extracted from various sources. Our approach provides the clean basis for building complex biological applications that are more amenable to changes and software ports than their file-base counterparts.},
  language  = {en}
}
@phdthesis{Ge2001,
  author    = {Ge, Bixia},
  title     = {Bioelectrochemical detection of radicals and radical scavangers},
  pages     = {108 S.},
  year      = {2001},
  language  = {en}
}
@article{SigolaevaMarkowerEremenkoetal.2001,
  author    = {Sigolaeva, L. V. and Markower, Alexander and Eremenko, A. V. and Makhaeva, G. F. and Malygin, V. V. and Kurochkin, I. N. and Scheller, Frieder W.},
  title     = {Bioelectrochemical anaysis of neuropathy targes esterase activity in blood},
  year      = {2001},
  language  = {en}
}
@article{Scheffler2001,
  author    = {Scheffler, Christiane},
  title     = {Bewegungsmuster in Alltagssituationen},
  series = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  volume    = {10},
  journal   = {Brandenburgische Umwelt-Berichte : BUB ; Schriftenreihe der Mathematisch-Naturwissenschaftlichen Fakult{\"a}t der Universit{\"a}t Potsdam},
  issn      = {1434-2375},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-3933},
  pages     = {94 -- 99},
  year      = {2001},
  language  = {de}
}
@article{Scheffler2001,
  author    = {Scheffler, Christiane},
  title     = {Bewegungsmuster in Alltagssituationen},
  year      = {2001},
  language  = {de}
}
@article{KummerMiersch2001,
  author    = {Kummer, Volker and Miersch, J{\"u}rgen},
  title     = {Bericht {\"u}ber eine einw{\"o}chige mykologische Exkursion nach Gotland im Herbst 1999},
  year      = {2001},
  language  = {de}
}