Dr. Martin Zwanzig

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Name

Dr. Martin Zwanzig

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Organization Name

Chair of Forest Biometrics and Systems Analysis

Chair of Forest Biometrics and Systems Analysis

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Postal address:

TUD Dresden University of Technology Fakultät Umweltwissenschaften, Institut für Waldwachstum und Forstliche Informatik

01062 Dresden

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Visiting address:

Hauptgebäude (Altbau), Room 30 Pienner Str. 8

01737 Tharandt

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Research interests

I am an ecological modeller and theoretical ecologist particularly interested in the evolution of ecological interactions and how plastic behaviour of individuals affects populations, communities and ecosystem resilience. Besides statistical and top-down approaches, I develop and analyze individual-based models to investigate the bottom-up mechanisms that define the structure and dynamics of ecological systems.

My research interest spans the following subjects:

Current research deals with the simulation of (i) the feedback between the ontogeny of xylem formation and water availability, (ii) the effect of silvicultural measures on reforestation dynamics at huge disturbance areas, and (iii) the eco-evolutionary dynamics of inter- and intra-specific trait composition in ecological communities.

My PhD focused on the propagation of antibiotic resistances in aquatic environments. The prefered platform of antibiotic resistence genes are plasmids, which constitute important genetic elements for bacterial adaptation and diversity. I use mathematical models such as systems of ordinary differential equations, cellular automaton and individual based models to investigate mechanisms that influence plasmid transfer and persistence under various ecological conditions.

Check out the models PlasSim and PlasmidActionIBM in our model gallery

Through my GitHub account https://github.com/mzwanzig I provide access to the source code (+apps) of these models and, in addition, tools for data analysis with R, including a script-based guide for a systematic data exploration, steps for tree height model development and calibration as well as routines for fitting and analysing enzyme kinetics with the classical Michaelis Menten and a derivate approach that we named SINH, which is able to deal with the effect of substrate inhibition.

A list of current topics for Bachelor and Master thesis can be found here:
current topics for supervised student research

Projects

Principal Investigator

• Simulation der Plastizität der hydraulischen Leitfähigkeit von Bäumen - Studentisches Forschungsprojekt von Jennifer Christ, gefördert im Rahmen des FOSTER-Programms der TU Dresden (05/2023 - 03/2024) [Betreuer]
• ResEt-Fi - Wegbereiter Wiederbewaldung: Regionales Flächenmanagement zur Entwicklung multifunktionaler Wälder auf gestörten Fichtenflächen. Teilprojekt 6. Eingebettet im BMBF-Verbundvorhaben: „Regionale Innovationsgruppen für eine klimaschützende Wald- und Holzwirtschaft (REGULUS)“ (033L304F; BMBF, 2023-2026)
• DiMo 2: Follow-up R&D project with the state-owned forest service Sachsenforst (see below); (09/2022-11/2022)
• DiMo: R&D project for the state-owned forest service Sachsenforst; Development of a digital solution for import, storage, evaluation and presentation of the data of the Saxon bark beetle monitoring system, in particular of the focal species Ips typographus and Pityogenes chalcographus; (11/2021-03/2022)

Involved as employee:

• Models for Genomic Alterations and the Evolution of Antibiotic Resistance in Aquatic Environments; Provision of Funds by "Support-the-best" pool and Graduate Academy of TU Dresden (2014 -2017) [Role: PhD student]
  Have a look at the project in our research overview
• SAPHIR - Saxonian Platform for high Performance Irrigation funded by ESF (European Social Fund, 07-12/2013); [Role: Research assistant at Chair of Hydrology at TU Dresden]
• Interactions of Organic Matter and Microbial Dynamics in Pasture Soils along Management Chronosequences funded by DFG (German Research Fundation, 2012 - 2013); www.tropicalmountainforest.org; [Role: Involved as Student Assistant and during Master Thesis]

Scientific vita

• Since May 2023 Post-doc representative in the UniWiND Advisory Board
• Since June 2022 Speaker of the Postdoc Council of the Postdoc Center HZDR-TUD
• 2019 PhD (Dr. rer. nat.) awarded by the Faculty of Environmental Sciences of the Technische Universität Dresden
• 2015 Guest scientist at the Brockhurst Lab (Experimental Evolution), Department of Biology, University of York, UK
• Since 2014 Scientific research & teaching staff at the Chair of Forest Biometrics and Forest Systems Analysis, Technische Universität Dresden
• 2013 Research Assistant, Chair of Hydrology, Technische Universität Dresden

Degrees and study-accompanying emplyoment/activities

• 2013 Master of Science in Spatial Development and Natural Resource Management at TU Dresden (interdisciplinary course of the Faculty of Environmental Sciences)
• 2012 DAAD scholarship, Research stay at the Estación Científica San Francisco (ECSF), Ecuador (Research Centre of the German Research Foundation (DFG))
• 2011 Student assistant at the Department of Soil Physics, Helmholtz Centre for Environmental Research - UFZ
• 2010-2013 Tutor at the Institute of Geography, Technische Universität Dresden
• 2007-2010 Bachelor of Science in Geography, Technische Universität Dresden
• 2009-2013 Tutor and Student assistant at the Institute of Soil Science and Site Ecology, Technische Universität Dresden
• 2009 Internship at the Department of Soil Physics, Helmholtz Centre for Environmental Research - UFZ

Lectures & Courses

• Biometrie (Bachelor Forest Sciences) [Biometrics; Exercises]
• Individual-based Ecology and Modelling Individuen-basierte Ökologie und Modellierung (Master Forest Sciences) [Individual-based Ecology and Modelling; Lectures + Exercises]
• Lebensraumnutzung von Wildtieren (Master Forest Sciences) [Habitat use of wildlife; Lectures + Exercises]

Publications

for Martin Zwanzig née Werisch (marriage in 2017); ORCID; RG; Google Scholar

Peer-reviewed paper

11 Entries

2015

• Above- and belowground linkages of a nitrogen and phosphorus co-limited tropical mountain pasture system – responses to nutrient enrichmentTischer, A., Zwanzig, M., Döbbelin, F., Camenzind, T., Rillig, M. C., Potthast, K. G. & Hamer, U., 14 Mar 2015, 391, p. 333–352Electronic (full-text) versionResearch output: Contribution to journal > Research article

This information is provided by the FIS.

Conference contributions and other

14 Entries

2023

• Modelling plastic xylem formation: a new perspective for exploring life history-related drought sensitivityZwanzig, M. & Christ, J., 14 Sep 2023Research output: Contribution to conferences > Poster
• Reforestation under climate change: A supra-regional field trial in Thuringia/Germany to test different management options for the development of multifunctional forests on disturbed spruce areasZwanzig, M., Brock, M., Zhou, X., Huth, F., Putzenlechner, B., Grieger, S., Tischer, A. & 9 others, 14 Sep 2023Research output: Contribution to conferences > Poster
• Modelling how management options for disturbed spruce areas affect reforestation dynamics: a predictive ecology approach for a supra-regional field trial in ThuringiaZhou, X. & Zwanzig, M., 7 Sep 2023Research output: Contribution to conferences > Poster
• Root-grafted tree networks from an eco-evolutionary perspective: a model-based analysis of the theoretical ecological benefit of cooperative treesMixsa, J. & Zwanzig, M., 7 Sep 2023Research output: Contribution to conferences > Poster

2022

• Steps for tree height model development and calibration with RZhou, X. & Zwanzig, M., 7 Dec 2022Electronic (full-text) versionResearch output: Other contribution > Other
• Tree stem diameter and height of Araucaria araucana, Nothofagus pumilio and Nothofagus dombeyi in mixed stands affected to different levels by anthropogenic disturbance in south-central ChileZhou, X., Kutchartt, E., Hernández, J., Corvalán, P., Promis, Á. & Zwanzig, M., 7 Dec 2022Electronic (full-text) versionResearch output: Other contribution > Other
• Kinetiken extrazellulärer hydrolytischer Enzyme beim Abbau von Totholz – Dynamiken als Funktion von Standort und TotholzartNähte, K., Zwanzig, M., Michalzik, B., Achilles, M. & Tischer, A., 7 Sep 2022Research output: Contribution to conferences > Poster

2020

• Roots of Cooperation: Can Root Graft Networks Benefit Trees Under Stress?Vovides, A., Wimmler, M., Schrewe, F., Balke, T., Zwanzig, M., Piou, C., Delay, E. & 2 others, 1 Dec 2020Electronic (full-text) versionResearch output: Other contribution > Other
• Self-organisation and persistence of antibiotic resistance in evolving plasmid communitiesZwanzig, M. & Berger, U., 15 Sep 2020Electronic (full-text) versionResearch output: Other contribution > Other

2017

• The hidden hands of trees: Root networks towards a safe hydraulic architectureVovides, A. G., Zwanzig, M. & Berger, U., 2017Research output: Contribution to conferences > Poster

This information is provided by the FIS.

Oral presentations

• Zwanzig, M. (2023): Xylem formation as the basis of adaptive physiological processes in individual-tree models - a new perspective for modelling life-history-related drought sensitivity. ECEM 2023 - European Conference on Ecological Modelling, 4 - 8 September 2023, Leipzig, Germany. Oral presentation.

• Zwanzig, M. (2022): Assembly and resilience of evolving plasmid communities. ISPB 2022 - International Symposium on Plasmid Biology, 18 - 23 September 2022, Toulouse, France. Oral presentation.

• Zwanzig, M. (2022): Diversity and resilience of simulated evolving plasmid communities. ESA CSEE Meeting 2022. 14 - 19 August 2022, Montréal, Canada. Oral presentation.
• Zwanzig, M. (2021): From simplified to increasingly complex scenarios: how the considered number and type of biotic interactions affect risk assessment of antibiotic resistance persistence. SETAC Europe annual meeting 2021, Session: From Ecological Concepts to Ecological Scenarios for Mechanistic Effect Model Applications in Risk Assessment and Management. ID 8.02.05, invited oral presentation.
• Zwanzig, M. (2017): Plasmid diversity induces the evolution of non-transitive
  dynamics in microbial systems. Ecology Across Borders, Joint Annual Meeting of BES,
  GfÖ, NecoV and EEF 2017, Gent, Belgium. Oral Presentation.
• Werisch, M. (2016): Adaptation and its relevance for plasmid maintenance. International Conference on Plasmids and other Mobile Genetic Elements 2016,
  Cambridge, UK. Oral Presentation.
• Werisch, M. (2015): Coevolution of bacteria and conjugative plasmids broadens the
  conditions favoring plasmid persistence. 10. Workshop of the Young Modellers in
  Ecology (GfÖ working group), Laachen, Switzerland. Oral Presentation.

Journal Reviewer & Memberships

Reviewing for, i.a., Ecological Modelling, Ecology Letters,  Philosphopical Transactions of the Royal Society B: Biological Sciences, PLOS Computational Biology, mSystems, Frontiers in Forests and Global Change

GFÖ member - the Ecological Society of Germany, Austria and Switzerland
ESA member - Ecological Society of America

Links

© The British Society for Antimicrobial Chemotherapy (BSAC)

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© YoMos

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