Abschlussarbeiten - Exp. Pflanzenökologie


Im Folgenden findest Du die Themenvorschläge für Bachelor- (BA) und Masterarbeiten (MA), nach ihrem potentiellen Startpunkt geordnet.

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Installing R


Die AG „Experimentelle Pflanzenökologie“ schreibt für 2020/21 folgende Themen für B.Sc.- und M.Sc.-Arbeiten aus:

1. Variation in phenological traits within a population and their heritability (BA or MA)

Time: August to October
Location: Greifswald
Contact: Ilka Beil & Juergen Kreyling

Under climate warming, many tree species tend to earlier spring leaf phenology and (to a smaller extend) also to later autumn leaf senescence, which has relevant impacts for species composition and animal plant interaction. However, there is some variation in the timing of leaf-out and leaf coloration within a population. From long term observations in Müritz National Park we know, that some trees are always flushing early and some are always flushing late. The variation of phenological traits within a population is of particular interest, when it comes to assess the long-term response of the plant communities and ecosystem.

Methods: We have a collection of beech seedlings from Müritz National Park, originating from early and from late flushing mother trees. By tracking autumn and spring phenology we want to answer the following questions:

  • Do late flushing mother trees also have late flushing offspring?
  • Do mother trees with late autumn phenology have offspring with late autumn phenology?
  • Is there a correlation between spring and autumnal phenology, are late flushing trees also late in autumn?

The project offers the opportunity for two bachelor theses.


2. Adaptation by selection to stressful conditions in dwarf shrubs?

Time: Winter
Location: Common garden Greifswald
Contact: Juergen Kreyling

Climate change leads to increased occurrence of extreme events such as drought, heat, or frost. Frost damage may increase despite climate warming, because plants used to overwinter in the insulated snowpack face frost exposure due to reduced snow cover. We manipulated reduced snow cover in a field experiment in a boreal forest in Sweden and found that dwarf shrubs (Vaccinium myrtillus and V. vitis-idaea) got strongly damaged with dieback of many individuals. However, repeated exposure to frost for more than 10 consecutive years did not kill those individuals, which initially survived. Therefore, we propose that this is an example of selection at work with the survivors potentially being better adapted to frost. This hypothesis should now be tested.

Methods: Individuals from the snow-removal plots and from surrounding snow-covered plots are held in a common garden in Greifswald. Their frost tolerance over the course of winter is to be tested by the Differential Thermal Analysis.


3. Dynamics of spring and autumn phenology of temperate deciduous trees - a joint project with the University of Antwerp (MA)

Data collection: to be scheduled depending on your interest between August 2020 and Spring 2021
Location: Antwerp
Contact: Ilka Beil

There are various thesis possibilities about spring and autumn dynamics of temperate deciduous trees. You could examine (i) spring leaf phenology (late March-May 2020) of young trees in different environmental manipulations (e.g. warming, drought, fertilization) and forests, (ii) autumn leaf phenology, thus leaf senescence, leaf coloring, leaf fall etc. of young trees in different environmental manipulations (e.g. warming, drought, fertilization) and forests (late August-November 2019), (iii) formation of buds, their preparation to winter sleep and their reaction (bud opening and leaf formation) in case of environmental manipulations (a period within Sep 2019 –Feb 2020). You will use different eco-physiological methods and visual observations. Your field work will be in Antwerp (Belgium). Your subject will fit within the EU project LEAF-FALL (https://www.uantwerpen.be/nl/onderzoek-en-innovatie/onderzoek-aan-uantwerpen/onderzoeksexcellentie/erc/matteo-campioli/).


4. Effects of invasive earthworms on root growth in subarctic tundra (MA)

Time: summer 2021
Location: Abisko, Sweden
Contact: Gesche Blume-Werry

Burrowing earthworms are a classic example of powerful ecosystem engineers. Though widespread throughout Europe, they are currently absent in (sub-)arctic tundra, mainly due to slow dispersal rates since the last glacial maximum and low soil temperatures. However, increasing human activity leads to introduction of burrowing earthworms into previously earthworm-free tundra (e.g., through fishing bait leftovers), which is also becoming a suitable habitat through climate warming. We have shown previously that the introduction of earthworms into tundra mesocosms boosts arctic plant-soil nitrogen cycling to a level that exceeds those of known drivers of arctic change (warming, herbivory, and nutrient addition).

We are now looking for a student to test how root phenology may change with earthworm invasion in subarctic tundra. You would stay at the Abisko Scientific Research Station in northern Sweden for several months during summer 2021. We support you with application for funding, for example with Erasmus.

Methods: Using minirhizotrons (root cameras) to analyze root growth in space and time with and without the presence of invasive earthworms. Bi-weekly or weekly measurements over the summer.


5. Pattern formation and coexistence in spatial models with multiple resources and consumers (MA or BA)

Starting date: any time
Location: Greifswald
Contact: Barbara Bauer

Recently there has been increasing attention on describing resource uptake by primary producers in spatially explicit systems to better understand the role of plant species diversity and composition in global nutrient cycles. The thesis will contribute to understanding how spatial patterns of coexistence and resource use depend on resource availabilities and plant characteristics. We will especially focus on testing which factors lead to the emergence of spatial patchiness (in diversity, species composition or resource uptake), which is a newly emerging topic in the context of community ecology. This will be achieved by analysing the outputs of a simulation model representing plants competing for mineral nutrients on a spatial grid.

Methods The code for the simulation model is already implemented, and preliminary results from the first set of simulations show interesting patterns. We will run additional simulations for a more comprehensive analysis. The thesis is an excellent opportunity to learn about using mathematical simulations to study complex systems, working with MATLAB and R and preparing a manuscript for a high impact ecological journal. 


6. Phenology and dormancy of trees under a changing climate (MA or BA)

Time: between September and May
Location: Greifswald
Contact: Ilka Beil

Perennial plants survive the winters in a dormant state. They developed a complex system that allows them to shed their leaves and to leaf-out again at the right time of the year. Due to climate warming, phenology, i.e. the timing of leaf senescence and leaf flushing, is shifting; with high impacts on ecosystems and carbon balance.

Methods: We are going simulate climate warming using two greenhouse compartments with different temperatures and investigate how autumn and spring leaf phenology will respond. We use seedlings of one late flushing species (beech) and one early flushing species (birch), because it is known, that they react differently. In addition, we track what we call “dormancy depth” of the plants. We assess how “deep the buds sleep”. By following the develop of dormancy depth from dormancy induction in autumn till leaf-out in spring, we hope to understand mechanistically at which time of the year temperature has which impact on bud dormancy and plant phenology

The project offers the opportunity for two bachelor or master theses, in which the field- and lab-work can be shared to some extent. If the results are promising, we are aiming to publish them together in an international scientific journal.


7. Paludiculture in face of drought – which genotypes ae best adapted? (2 BA or MA)

Time: April-September (or parts of this period)
Location: Arboretum Greifswald
Contact: Kerstin Haldan & Jürgen Kreyling

Drainage of fen soils leads to increased greenhouse gas emissions as well as soil degradation and subsidence, but these negative effects can be effectively counteracted by rewetting. To create an economic incentive for large-scale rewetting, we investigate the suitability of reed (Phragmites australis) for Paludiculture. However, climate change leads to more frequent drought extremes and here we want to test which genotypes are best adapted to such conditions.

In a mesocosm experiment at the Arboretum Greifswald, 6 reed genotypes (two ploidy levels each from Russia, Hungary and Romania) are grown in a gradient of drought extremity. Functional traits such as height growth, shoot number, photosynthetic capacity and, towards the end of the experiment biomass, root:shoot-ratio or specific root length (SRL) are important plant traits that help us to assess the performance of plants under different environmental conditions. By investigating such functional traits on the mesocosm plants you will not only learn about the plants’ response to environmental gradients but also be able to make recommendations on which species or clones can be used in various paludiculture environments.


8. Root phenology of wetland plants in response to water regime (1 MA or 2 BA)

Time: January to December (or parts of this period)
Location: Greifswald
Contact: Gesche Blume-Werry & Jürgen Kreyling

Plant roots play key roles in ecosystem function and are of special importance in fens, where roots and rhizomes form peat and thus are the main contributors to large carbon stores. However, little is known about the root dynamics of different species, how they respond to changes in water table height, and how species respond to competition. This project is within the framework of WETSCAPES (www.wetscapes.uni-rostock.de).

Methods: Using minirhizotrons (root cameras) in a mesocosm facility to assess root growth and root architecture in fen species originating under different water table regimes.


9. Root dynamics in drained and rewetted peatlands in the face of climate change (MA or 2 BA)

Time: January to December (or parts of this period)
Location: Peatlands between Rostock and Greifswald
Contact: Gesche Blume-Werry & Jürgen Kreyling

Peatlands are globally important carbon sinks, but drainage of peatlands leads to a release of the stored carbon and to large emission of greenhouse gases. To reduce greenhouse gas emissions, efforts are made in rewetting these systems in the hope of restoring their potential as carbon stores.

Here, the root growth dynamics in three different types of drained and rewetted peatlands (alder carr, percolation mire and coastal mire) are assessed by the minirhozotron technique. The same observations occurred already in the extremely dry and warm years 2018 and 2019 and 2020, when water tables even in the rewetted fens dropped below -60 cm. According to the IPCC report (2013), these extreme weather conditions are projected to increase with climate change. Long-term observations of root dynamics in drained and rewetted peatlands will increase our knowledge on how these ecosystems might react to changes in climate and if they are able to maintain their important function as carbon sinks in the future. This project is within the framework of WETSCAPES (www.wetscapes.uni-rostock.de).

Methods: Using minirhizotrons (root cameras), root growth in space and time is analysed at drained and rewetted peatlands in MV, which will be visited monthly during the growing season. A driving license is needed and an own car is a merit (travel costs will be covered).


10. Reindeer grazing and snow effects on plant communities and ecosystem carbon balance in a boreal fen (1 or 2 MA)

Time: Summer 2021
Location: Oulanka, Finland
Contact: Gesche Blume-Werry

Climate change is shifting the duration and thickness of snow cover in boreal regions. At the same time, large herbivores, reindeer, are key drivers of plant community dynamics as they influence plant productivity directly through defoliation and the return of nutrients, but also induce changes in soil processes.  The EcoClimate experiment in northern Finland aims to find out how ecosystems respond to these two factors (reindeer grazing and snow cover changes).

We are now looking for a student to test how winter climate and reindeer grazing affect plant communities and ecosystem carbon balance (plant community composition, root growth, trace gas fluxes fluxes, and biogeochemistry). You would stay at the Oulanka Research Station in northern Finland for several (4-8) weeks. We support you with application for travel funding, for example with Erasmus.

Methods: Pin-pointing, minirhizotrons (root cameras), and gas flux chamber measurements. Prior knowledge of some of these methods is a merit, but not essential.


11. Recovery of a coastal heathland after disturbance - does drought matter? (BA or MA)

Time: July/August 2021
Location: Hiddensee
Contact: Juergen Kreyling

Coastal heathlands are dominated by Calluna vulgaris. They are old cultural landscapes of high conservation value. However, atmospheric nitrogen deposition and management cessation have led to increased competition by grasses and woody species, thereby endangering this ecosystem type. In a field experiment on the island of Hiddensee, we test if climate change-induced drought would further exacerbate these developments and if (simulated) sheep grazing might retard it. All this is realized in two successional stages, one with young and vigorously-growing Calluna plants and the other with over-aged and partly dying Calluna. The whole experiment is part of the International Drought Experiment (https://wp.natsci.colostate.edu/droughtnet/) , a network which runs comparable drought experiments all over the globe.

Methods: The experiment is running since 2015. Here, aboveground biomass of all species is to be quantified via non-destructive measures (point intercept method. One visit to Hiddensee is  required, lasting for 4-5 days. Travel costs are paid.


12. Effects of mycorrhizae on decomposition in subarctic tundra (BA or MA)

Time: June / July 2021
Location: Abisko, Sweden
Contact: Gesche Blume-Werry

Arctic tundra stores about twice the amount of carbon that is currently contained in our atmosphere in its soils. With climate change, however, the Arctic changes dramatically, particularly in terms of vegetation composition. An important way in which plants affect carbon storage is by their interactions with symbiotic soil fungi – mycorrhiza –, as they have a great ability to store carbon belowground, although which fungi are present depends on the plant species. Changes in vegetation composition therefore will also determine which types of fungi can be found in the landscape. To study how changed soil fungal communities affect carbon storage, our international research collective has established a long-term field experiment in the alpine tundra close to Abisko. In this experiment we remove fungal types from the soil by removing their symbiotic plant species.

We are now looking for a student to test how decomposition of plant material is affected by the presence of certain mycorrhizae. You would stay at the Abisko Scientific Research Station in northern Sweden during summer 2021. We support you with application for funding, for example with Erasmus and this topic could easily be combined with a longer stay for an internship or Forschungspraktikum.

Methods: Using tea bags to assess decomposition rates.


Laufende und abgeschlossene Abschlussarbeiten:

2020

2020

Wasser, Konkurrenz und Temperatur als Treiber für ober- und unterirdisches Wachstum von Moorpflanzen im Frühling
Elisabeth Bohl (B.Sc.-Arbeit, betreut durch Jürgen Kreyling und Gesche Blume-Werry)

Root phenology on three different fen types in drained and rewetted conditions
Charlotte Arnswald (M.Sc.-Arbeit, betreut durch Jürgen Kreyling und Sarah Schwieger)

Kurzfristige Wurzelwachstumsdynamik in täglicher Auflösung bei varriierenden Wasserständen in Niedermooren
Luisa Maria Lück (B.Sc.-Arbeit, betreut durch Jürgen Kreyling und Gesche Blume-Werry)

Das Wachstum der unterirdischen Biomasse der Rohrkolbenarten Typha latifolia und Typha angustifolia entlang von Gradienten der Nährstoffverfügbarkeit und des Wasserstandes
Anja Luise Hornig (B.Sc.-Arbeit, betreut durch Kerstin Haldan und Jürgen Kreyling)

Are phenological leaf traits of mother trees and their offsprings' timing of germination correlated in Fagus sylvatica?
Annè Lemke (B.Sc.- Arbeit, betreut durch Jürgen Kreyling und Jonas Schmeddes)

Wurzel- und Rhizomwachstum verschiedener Genotypen von Phragmites australis entlang eines Wasserstandsgradienten
Marthe Stein (B.Sc.-Arbeit, betreut durch Jürgen Kreyling und Kerstin Haldan)

Wie tief schlafen Bäume wirklich? - Verlauf der Wurzeldormanz im Vergleich zur Knospendormanz
Lea Lück (B.Sc. Arbeit, betreut durch Andrey Malyshev und Gesche Blume-Werry)

Root porosities of Phragmites australis clones differ along artificial water and nutrient gradients
Alexander WIlle (M.Sc. Arbeit, betreut durch Jürgen Kreyling und Kerstin Haldan)

Die specific root length (SRL) von Phragmites australis entlang eines Nährstoffgradienten in einem Mesokosmenexperiment
Fabian Kieckhäfer (B.Sc. Arbeit, betreut durch Kerstin Haldan und Jürgen Kreyling)

The effect of frost on the photosynthetic activity of winter reapeseed (Brassica napus) during a mild winter
Tim Marvin Ziegler (B.Sc. Arbeit, betreut durch Ilka Beil und Jürgen Kreyling)

Specific Root Length variation of Phragmites australis clones in response to different water levels
Lina Stella Schock (B.Sc. Arbeit, betreut durch Jürgen Kreyling und Kerstin Haldan)

Frühjahrsphänologie von Fagus sylvatica L. unter Dürrebedingungen und unter Betrachtung verschiedener Herkünfte
Leonie Kaiser (B.Sc. Arbeit, betreut durch Ilka Beil und Andrey Malyshev)

Trockenheitsschäden an Calluna vulgaris und deren Erholung in der Küstendünenheide von Hiddensee, erfasst durch wiederholte Drohnenbefliegung
Felix Josef Räder (B.Sc. Arbeit, betreut durch Jürgen Kreyling und Tobias Dahms)

Quantifying phenotypic plasticity of Fagus sylvatica in a reciprocal transplantation experiment across a Europe-wide gradient
Pascal Karitter (M.Sc. Arbeit, betreut durch Jürgen Kreyling und Jonas Schmeddes)

Untersuchungen über die Auswirkungen verschiedener Wasserlevel und Nährstofflevel auf das Blatt- und Sprosswachstum bei fünf verschiedenen Klonen von Phragmites australis
Lisa Schade (B.Sc. Arbeit, betreut durch Jürgen Kreyling und Kerstin Haldan)

Die Brutvögel des Strandwallfächers auf de Insel Hiddensee
Lena Schlünß (BSc-Arbeit, Betreuer: Irmgard Blindow & Angela Schmitz-Ornes)

Untersuchungen zu Beziehungen zwischen höheren Pflanzen und Standortfaktoren im Strandwallfächer und auf der Glambäkwiese auf de Insel Hiddensee
Bettina Lebuser (BSc-Arbeit, Betreuer: Irmgard Blindow & Heike Ringel)

Brutvögel im Dornbusch auf der Insel Hiddensee - Zusammenhang mit zunehmender Verbuschung
Yannick Rathgeber (BSc-Arbeit, Betreuer: Angela Schmitz & Irmgard Blindow)

Die Grabwespenfauna der Insel Hiddensee - Veränderungen über fünf Jahrzehnte
Anna Edner Heide (BSc-Arbeit, Betreuer: Irmgard Blindow & Christian Schmid-Egger)

2019

2019

Zusammenhang von Frostresistenz und Zeitpunkt des Austriebs bei Gehöölzen im Greifswalder Arboretum
(Anna Maria Weißig, B.Sc.-Arbeit, betreut durch Ilka Beil und Jürgen Kreyling)

Photosynthesis rates in five clones of Phragmites australis in a water and a nutrient gradient experiment
(Joraine Schmoldt, M.Sc.-Arbeit, betreut durch Jürgen Kreyling und Kerstin Haldan)

Importance of snow cover for understory plants in boreal forests
(Lukas Alexander Gäckle, B.Sc.-Arbeit, betreut durch Jürgen Kreyling und Gesche Blume-Werry)

Einfluss der Temperatur auf die Dormanztiefe und Frühlingsphänologie bei vier verschiedenen Laubbaumarten
(Nele Lemcke, B.Sc.-Arbeit, betreut durch Jürgen Kreyling und Ilka Beil)

Development of root distribution patterns of Andean Lupin (Lupinus mutabilis) in monoculture and intercropped with maize
(Hannah Holzgreve, M.Sc.-Arbeit, betreut durch Jürgen Kreyling und Herr Dr. Böhm)

Effects of snow cover on fine root growth in beech forest varying in winter harshness
(Christiane Klemm, B.Sc.-Arbeit, betreut durch Robert Weigel und Juergen Kreyling)

Putting the root growth of an extreme year into perspective
(Charlotte Arnswald, M.Sc.-Arbeit, betreut durch Gesche Blume-Werry und Sarah Schwieger)

Digital visualization of roots in peat
(Stella Gribbe, M.Sc.-Arbeit, betreut durch John Couwenberg und Gesche Blume-Werry)

Comparison of root growth within and among five Carex species, influenced by nutrient levels
(Sascha Bock, M.Sc.-Arbeit, betreut durch Gesche Blume-Werry und Juergen Kreyling)

Influence of water regime on root production of wetland plants
(Hannah Marx, B.Sc.-Arbeit, betreut durch Gesche Blume-Werry und Juergen Kreyling)

The influence of aspect on species composition and phenology at mountain summits of Nuolja and Slåttajakka, Sweden
(Pia Raker, B.Sc.-Arbeit, betreut durch Gesche Blume-Werry und Keith Larsen)

Changes in vegetation composition in the last 100 years on Mount Nuolja, northern Sweden
(Anne-Kathrin Schäfer, B.Sc.-Arbeit, betreut druch Gesche Blume-Werry und Keith Larsen)

Einflussfaktoren auf die Blühphänologie von Anemone Nemorosa
(Luisa Daniel, B.Sc.-Arbeit, betreut durch Jürgen Kreyling und Jonas Schmeddes)

Zusammenhang von Baumbeschaffenheit und Zeitpunkt des Austriebs bei etwa 500 Baum- und Straucharten im Greifswalder Arboretum
(Kristin Koch, B.Sc.-Arbeit, betreut durch Jürgen Kreyling und Ilka Beil)

Assessing root production in drained and re-wetted peatlands
(Nils Krauß, B.Sc.-Arbeit, betreut durch Jürgen Kreyling und Sarah Schwieger)

Influence of temperature on autumnal phenology in trees
(Claudia Meyer, B.Sc.-Arbeit, betreut durch Jürgen Kreyling und Ilka Beil)

Age and biomass distribution of Alnus glutinosa roots in a drained and a rewetted Swamp
(Felix Ciesiolka, M.Sc.-Arbeit, betreut durch Frau Dr. Anadon-Rosell und Sarah Schwieger)

Abbau organischen Materials in trockenen und wiedervernässten Mooren
(Friederike Pautz, B.Sc.-Arbeit, betreut durch Sarah Schwieger und Gesche Blume-Werry)

Einfluss der landwirtschaftlichen Nutzung auf das Vorkommen von Amphibien in Kleingewässern Rügens
Charlotte Foisel (MSc-Arbeit, Betreuer: Falk Ortlieb & Irmgard Blindow)

Einfluss der landwirtschaftlichen Nutzung auf das Vorkommen von Wasserpflanzen in Kleingewässern auf Rügen
Laura Bertram (MSc-Arbeit, Betreuer: Irmgard Blindow & Hendrik Schubert)

Der Einfluss von Makrophyten auf Makrozoobenthos in zwei flachen Küstengewässern der Ostsee
Reimer Liebetrau (BSc-Arbeit, Betreuer: Martin Paar & Irmgard Blindow)

Feeding behaviour of the marine gastropod Aplysia dactylomela under elevated temperatures
Anne Brauer (MSc-Arbeit, Betreuer: Mark Lenz & Irmgard Blindow)

Einfluss unterschiedlicher Habitatqualität auf die Nahrungsökologie und den Bruterfolg des Braunkehlchens (Saxicola rubetra)
Dorothea Clausen (BSc-Arbeit, Betreuer: Irmgard Blindow & Hermann Hötker)

2018

2018

Minirhizotron picture analysis - maintaining accuracy while reducing time effort
(Melanie Thürk, B.Sc.-Arbeit betreut durch Gesche Blume-Werry und Robert Weigel)

Einfluss von Trockenheit und Beweidung auf die Entwicklung der Heide auf Hiddensee
(Sara Zielke, B.Sc.-Arbeit, betreut durch Ilka Beil und Jürgen Kreyling)

Management options for the conversion of non-native coniferous forest patches towards more natural species composition in the Western Pomerania Lagoon Area National Park (Germany)
(Alex Seliger, Masterarbeit, betreut durch Juergen Kreyling und Michael Manthey)

Do volcanoes fertilize the globe?
(Vanessa Teike, Bachelorarbeit, betreut durch Juergen Kreyling und Ilka Beil)

Frost and drought tolerance in two provenances of a temperate weed (Anchusa arvensis)
(Kathrin Hölscher, Bachelorarbeit, betreut durch Andrey Malyshev)

Cross-stress memory: Influence of prior frost exposure on drought tolerance of a temperate weed
(Lena Hirschler, Bachelorarbeit, betreut durch Andrey Malyshev)

Variation der Frühjahrsphänologie bei Rotbuchen (Fagus sylvatica L.) unter Betrachtung der innerartlichen Konkurrenz
(Dennis Maß, Bachelorarbeit, betreut durch Juergen Kreyling & Ernst van der Maaten)

Inter-individual variation in spring phenology of european beech
(Aron Garthen, Bachelorarbeit, betreut durch Juergen Kreyling & Andrey Malyshev)

Effects of manipulated snow cover on fine root growth in beech forests varying in winter harschness
(Annika Behrens, Bachelorarbeit, betreut durch Robert Weigel & Juergen Kreyling)

Möglicher Zusammenhang zwischen Elektrolytgehalt und Tiefe der Knospendormanz
(Lena Möhlmann, Bachelorarbeit, betreut durch Andrey Malyshev)

Conditionally expressed heritability in Fagus sylvatica in a translocation experiment across Europe
(Stefanie Holm, Masterarbeit, betreut durch Juergen Kreyling & Lena Muffler)

Chasing aliens: The effects of non-native species removal on early stages of tallgrass prairie restoration
(Thea Courtial, Bachelorarbeit, betreut durch Hugh AL Henry & Juergen Kreyling)

Stressgedächtnis und lokale Anpassung verschiedener Herkünfte der Rotbuche (Fagus sylvatica L.) an Frost
(Zhuo Yang, Bachelorarbeit, betreut durch Juergen Kreyling)

Temperature dependence of heritability in Arabidopsis thaliana
(Dustin Koch, Masterarbeit, betreut durch Juergen Kreyling)

Using historical and phenological data to explain spatial and temporal variation in spring budburst dates of five tree species in Germany
(Jamal Uddin, Masterarbeit, betreut durch Andrey Malyshev)

Untersuchung der Zersetzung in trockengelegten und wiedervernässten Mooren mit dem Tea Bag Index
(Tristan Torsten Kallweit, Bachelorarbeit, betreut durch Jürgen Kreyling & Sarah Schwieger)

Structure and migration behaviour of zooplankton in the lagoons of the southern Baltic Sea
Friedemann Blaffert (MSc-Arbeit, Betreuer: Irmgard Blindow, Rhena Schumann)

Nährstofflimitation des Phytoplanktons in Boddengewässern Mecklenburg-Vorpommerns
Jenny Reiche (MSc-Arbeit, Betreuer: Max Berthold, Irmgard Blindow)

Impacts of eutrophication on growth of the European perch Perca fluviatilis (Linnaeus 1758) in brackish coastal lagoons of the Baltic Sea
Timo Rittweg (MSc-Arbeit, Betreuer: Hendrik Schubert, Martin Paar)

2017

2017

Effects of snow cover on fine root growth in beech forests varying in winter harshness
(Christiane Klemm, Bachelorarbeit, betreut durch Robert Weigel)

Memory effects and intraspecific variation in stress response of Fagus sylvatica to recurrent drought events
(Phil Garthen, Bachelorarbeit, betreut durch Jürgen Kreyling)

Cross-stress tolerance and stress memory in perennial plants
(Alexander Wille, Bachelorarbeit, betreut durch Andrey Malyshev)

Bud dormancy and frost tolerance in trees – are they linked?
(Kathrin Bäthge, Masterarbeit, betreut durch Andrey Malyshev)

Die Auswirkungen verschiedener Winterbedingungen auf die Knospenzruhe und Knospenfrosthärte bei Fagus sylvatica
(Alex Kolb, Bachelorarbeit, betreut durch Jürgen Kreyling)

Root- and shoot phenology in different vegetation types
(Bo Peters, Masterarbeit, betreut durch Gesche Blume-Werry und Juergen Kreyling)

Influence of warm temperature on growth and development of Arabidopsis thaliana
(Matthias Lorenz, Bachelorarbeit, betreut durch Jürgen Kreyling und Ilka Beil)

Impacts of machine mowing on selected soil properties of near-natural fens - A case study from NE Germany
(Felix Närmann, Masterarbeit, betreut durch Franziska Tanneberger und Juergen Kreyling)

Impacts of machine mowing on vegetation composition, root porosity and decomposition in near-natural fens - A case study from NE Germany
(Franziska Richter, Masterarbeit, betreut durch Elke Seeber und Juergen Kreyling)

Response of a coastal heathland to drought and grazing during different successional stages
(Anne Guthke, Bachelorarbeit, betreut durch Juergen Kreyling)

Importance of the three-spined stickleback (Gastrerosteus aculeatus) in the food web of two coastal shallow lagoons in the southern Baltic Sea
(Michael Steinmüller, Masterarbeit, betreut durch Irmgard Blindow)

Effects of snow cover on fine root growth in beech forests varying in winter harshness(Annika Behrens, Bachelorarbeit, betreut durch Robert Weigel und Jürgen Kreyling)

Within-species variation in leaf traits of Fagus sylvatica in response to macroclimatic site conditions
(Celia Baron, Bachelorarbeit, betreut durch Lena Muffler und Jürgen Kreyling)

Leaf and growth traits in different populations of Fagus sylvatica in response to drought
(Uday Sagar, Masterarbeit, betreut durch Jürgen Kreyling und Lena Muffler)

Stressgedächtnis und lokale Anpassungsfähigkeit verschiedener Herkünfte der Rotbuche (Fagus sylvatica L.) an Spätfrost
(Bibiana Kruse, Bachelorarbeit, betreut durch Lena Muffler und Jürgen Kreyling)

Veränderungen der Waldbodenvegetation entlang eines Temperaturgradienten in Buchenwäldern an neun Standorten in Deutschland und Polen
(Jennifer Gilles, Masterarbeit, betreut durch Robert Weigel und Jürgen Kreyling)

Developement of bud dormancy and cold tolerance in species with different chilling requirements
(Maren Hestermann, Diplomarbeit, betreut durch Andrey Malyshev)

Comparison of above ground and below ground autumn phenology in contrasting temperate vegetation types
(Sina Rogge, Masterarbeit, betreut durch Jürgen Kreyling und Robert Weigel)

2016

2016

Bestimmung der flächendifferenzierten Grundwasserneubildung eines holozänen Porengrundwasserleiters auf Hiddensee (Mecklenbeck-Vorpommern)
(Philip Hartung, Bachelorarbeit, betreut durch Maria Schafmeister und Irmgard Blindow)

Kalkinkrustierung verschiedener Characeenarten in Süß- und Brackwasser
(Levke Henningsen, Masterarbeit, betreut durch Irmgard Blindow)

Distribution of Zostera marina in the coastal waters of the Baltic Sea
(Anton Bühler, Masterarbeit, betreut durch Irmgard Blindow)

Der Einfluss meteorologischer Elemente auf das Blühverhalten ausgewählter Orchidaceae des Naturpark Schlaubetal
(Kai Hobritz, Bachelorarbeit, betreut durch Jürgen Kreyling)

Influence of soil-borne pathogens on seedling performance in declining Quercus suber forests: an experimental approach
(Vincent Hoeber, Masterarbeit, betreut durch Jürgen Kreyling)

Temporal bud dormancy and cold tolerance changes in trees
(Sascha Bock, Bachelorarbeit, betreut durch Andrey Malyshev)

Populations-spezifische Frosttoleranz vor und nach der Keimung von Fagus sylvatica
(Jan Moritz Böhme, Bachelorarbeit, betreut durch Jürgen Kreyling und Lena Muffler)

Allometric quantification of biomass in Calluna vulgaris
(Alexandra Nicola Effinger, Masterarbeit, betreut durch Jürgen Kreyling und Irmgard Blindow)

Fotoidentifikation von Meeresschildkröten auf Koh Tao, Thailand
(Lena Schenke, Bachelorarbeit, betreut durch Irmgard Blindow)

2015

2015

Plant stress memory: effects of recurrent drought and frost events on stress resistance in P lanceolata
(Molla Karimul Islam, Masterarbeit, betreut durch Andrey Malyshev)

Long term effects of a crude oil spill on desert vegetation
(Mara Nothers, Bachelorarbeit, betreut durch Jürgen Kreyling)

Effects of climate change induced autumnal warming on root phenology in the Arctic tundra
(Sarah Schwieger, Masterarbeit, betreut durch Jürgen Kreyling)

Zusammenhang zwischen frühlaichenden Amphibien und Habitateigenschaften von Kleingewässern auf der Insel Hiddensee
(Anna Sickert, Bachelorarbeit, betreut durch Irmgard Blindow)

Zusammenhang zwischen Gewässereigenschaften und Amphibien auf der Insel Hiddensee
(Lina Hartrampf, Masterarbeit, betreut durch Irmgard Blindow)

Beziehungen zwischen Zooplankton und submersen Makrophyten in der Darß-Zingster Boddenkette
(Maria Schiffler, Masterarbeit, betreut durch Irmgard Blindow)

Sedimentation und Resuspension in der Darß-Zingster Boddenkette – eine Methodenstudie
(Vivien Leonhardt, Masterarbeit, betreut durch Irmgard Blindow)

Composition and adaptation of submerged macrophytes in shallow coastal lagoons of the southern Baltic Sea
(Laura Schulz, Masterarbeit, betreut durch Irmgard Blindow)

2014

2014

Interaktionen zwischen suspendiertem Material und submersen Makrophyten in flachen Küstengewässern der südlichen und westlichen Ostsee
(Milena Kafka, Diplomarbeit, betreut durch Irmgard Blindow)

Zusammenhang zwischen Makrophytobenthos und Sedimentstruktur in flachen Küstengewässern der deutschen Ostsee
(Antje Kerkow, Diplomarbeit, betreut durch Irmgard Blindow)

Wechselwirkungen zwischen Phytoplankton, Nährstoffen und Submersvegetation an der deutschen Ostseeküste
(Caroline Lindner, Diplomarbeit, betreut durch Irmgard Blindow)

Interaktionen zwischen Zooplankton und submersen Makrophyten in den Boddengewässern vor Hiddensee
(Božena Nawka, Diplomarbeit, betreut durch Irmgard Blindow)

Potential und aktueller Stand der Kultivierung von Dreissena polymorpha zur Verbesserung des ökologischen Zustandes des Usedomer Sees
(Kristina Schulze-Böttcher, Masterarbeit, betreut durch Sven Dahlke)

Aktuelle Situation submeser Makrophyten und Diasporenreservoir im Usedomer See
(Elisa Domke, Diplomarbeit, betreut durch Sven Dahlke)

Means of communication and herbicide effects in predator-prey interactions between Scorpaena porcus and Pomatoschistus spp.
(Sandra Jahn, Diplomarbeit, betreut durch Claudia Kruschel und Irmgard Blindow)

Bereitstellungsketten von Landschaftspflegematerial zur energetischen Nutzung am Beispiel der Insel Hiddensee
(Sandra Grützmann, Bachelorarbeit (FH Stralsund), betreut durch Irmgard Blindow)