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Zarah Janda

Experiences

1

Leipzig, Germany

The German Centre for Integrative Biodiversity Research – iDiv is focused on understanding the variety of life on earth. We measure and monitor how this diversity is changing, and how it affects ecosystem functioning and services.

Doctoral Researcher

April 2024 - Present

Responsibilities:
  • Fieldwork - taking soil samples at the Jena Experiment field side
  • Laboratory Measurments - analysis of soil samples, e.g. percentage of waterstable aggregates, soil microbial biomass, basal respiration and the activity of hydrolytic enzymes
  • Data Analysis - statistical analysis of measurements to identify the effect of plant species richness on several measures

Heidelberg University

Heidelberg University supports the climate policy activities of the state of Baden-Württemberg and pursues the goal of achieving net greenhouse gas neutrality by 2040 through gradual reduction measures.

Student Assistant

Oct 2022 - Feb 2024

Responsibilities:
  • Development of a ‘Sustainability of Science’ concept
  • Assistance in the preparation of the greenhouse gas balance
  • Development of a website using R
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3

Heidelberg

The National Center for Tumor Diseases (NCT) Heidelberg is a joint institution of the German Cancer Research Center (DKFZ), the University Hospital Heidelberg (UKHD), the Heidelberg Medical Faculty of the Heidelberg University and the Thoraxklinik Heidelberg. German Cancer Aid (Deutsche Krebshilfe) funds the NCT as an Oncological Center of Excellence.

Student Assistant

Oct 2021 - Sep 2022

Responsibilities:
  • Fundraising for the calls for donations against cancer
  • Communication with sponsors and donors
  • Organisation of the NCT run

Technical University Kaiserslautern

The Distance and Independent Studies Center offers more than 20 Master’s and certificate distance learning programmes which allow you to continue your education while working – in most cases even without a first university degree.

Student Assistant

July 2020 - Dec 2020

Responsibilities:
  • Support in teaching activities and the organisation of the Diemersteiner Self-Learning Days
  • Creation of (digital) teaching materials
  • Summarization of non-specialist literaure
4

5
Student Tutoring

2009 - 2020

Kaiserslautern/Karlsruhe

Tutor

2009 - 2020

Responsibilities:
  • Support for students at all levels
  • Focus on English, Mathematics, Biology, Chemistry and German

Education

PhD in the Jena Experiment and Associate PhD in ECO-N
Extracurricular Activities:
  • Main Coordinator of the Symposium ‘Science TBD’ - Organisation of an interdisciplinary symposium at iDiv in March 2026
  • CO2e emissions Assessment of PhD Project - Calculation and analysis of the total CO2e emissions generated thoughout my PhD, including travels, fieldwork and lab activities. The results will be published alongside my dissertation to quantify the environmental impact of my research and propose straegies for emission reduction.
  • Sustainable Development Course - Completed the lecture series in 2024 and gave a guest lecture in Ocotber 2025 on ‘Sustainability and One Health’ focusing on the links between ecological integrity, human health and sustainable practices.
  • iDiv PhD Representative - PhD Meeting coordination, Code of Conduct, Supervision at iDiv
  • Jena Experiment PhD Representative - PhD meeting coordination, communiation with Principle Investigators
Work Package 1 - Long-term Soil Multistability:
Investigation of the long-term effects of plant species richness on microbial biomass within a grassland experiment. Focus on long-term stability, resistance and recovery from climate extremes.
Work Package 2 - Soil multresistance and multirecovery along a stress gradient:
Examination of plant species diversity on multisple soil functions within a controlled greenhouse experiment simulating a water-stress gradient.
Work Package 3 - Intra- and Inter-annual soil multistability:
Study of plant species richness effects on the seasonal stability of multisple soil functions within the Jena Experiment.
Master Molecular Biosciences, Major Molecular and Cellular Biology
Master of Science (1.2): 120 out of 120 CP
Extracurricular Activities:
  • Student Newspaper ‘ruprecht’ - Freelance editor
  • Event organisation ‘Sustainability in Science’ - Member of the organising team of the student symposium in the funding and speaker resort.
  • Interdisciplinary Marsilius Studies - Additionally to my Master I enrolled in the Marsilius Studies and completed the seminars Rethinking Environment, Body Environments, From Models to Politic- The Role of Simulations in Climate Change Decision Making and Innovation for Future? Potentialand Pitfalls of the Circular Bioeconomy. Furthermore, I gave a colloquium connected to my master thesis topid Model organism human - human tissue samples in biomedical research.
Internship at Center for Integrative Infectious Diseases, Heidelberg, Germany:
Electron microscopy of the ookinete of Plasmodium falciparum.
Internship at Institute Imagine, Paris, France:
The genetic basis for infectious disease susceptibility -Molecular phenotyping of triplets with the same mutation
Internship at Center for Organismal Studies, Heidelberg, Germany:
Investigation of the effects of conventionel and ecological agriculture on biodiversity - Analysis of questionnaires and field data of crop fields in Baden-Wurttemberg.
Master Thesis at Institute for Human Genetics, Heidelberg University Hospital, Heidelberg, Germany:
Establishment of a Bipartite Workflow for the Assessment of Molecular Anomalies in Patients with Inflammatory Bowel Disease with Focus on the Enteric Nervous System, the Immune System and Their Interconnection.
Bachelor Applied Biology
Bachelor of Science (2.0): 192 out of 180 CP
Extracurricular Activities:
  • Event Organisation ‘The Future of Bioeconomy’ - Member of the organisation team and moderation of the Panel Discussion
  • Drama Club GeistSozTheater - The Midsummer Night’s Dream, Fahrenheit 451
  • Drama Club PhysikerTheater - The Wonderful World of Dissocia
Internship at Max Planck Institute for Marine Microbiology, Bremen, Germany:
Seasonal abundance changes of bacterial key taxa involved in the polysaccharide uptake off Helgoland.
Bachelor Thesis at Max-Rubner-Institute for Nutrition, Karlsruhe, Germany:
Quantification of the intestinal human microbiome using Spike-in Bacteria - A comparative analysis of fibre intake and biological sex.
Bachelor Chemical Biology
Extracurricular Activities:
  • Drama Club UniTheater - Rope
A-levels
Extracurricular Activities:
  • Drama Club
  • School Choir

Projects

Science - To Be Determined
Science - To Be Determined
Main Coordinator March 2025 - March 2026

Organisation of an interdisciplinary symposium on open science.

Best Research Environment Prize
Jury Member Jan 2026 - June 2026

The year before, my research group won the prize for the Best Research Environment. For the next round, I was asked whether I would be interested t join the jury- which I was! My task included the assessment of the applications in regard of impact, novelty and innovation.

FirstGen Academics Network
Jury Member Jan 2026 - June 2026

For the Women in Science Day 2026, three colleagues and I organised a workshop on being the first one in your family to attend a ujiversity. Out of this workshop we founded a network at Uni Leipzig with a lunch meet-up every month. We plan to expand this to workshops and seminar on this important but underrepresented topic.

Publications

Somatic deficiency of the human E3 ubiquitin ligase CBL in leukocytes impairs B cell but not T cell development and function
Nature Immunology 15 January 2026

This study examines individuals who carry somatic, leukocyte-specific loss-of-function variants in the E3 ubiquitin ligase CBL.

Human MCTS1-dependent translation of JAK2 is essential for IFN-γ immunity to mycobacteria
Cell 23 October 2023

Severe mycobacterial disease can arise from inherited defects in interferon-gamma immunity. This study identifies X-linked MCTS1 deficiency in men from several countries whose translation re-initiation factor is completely lost, which selectively impairs production of the kinase JAK2 across cell types.

Autoinflammation in patients with leukocytic CBL loss of heterozygosity is caused by constitutive ERK-mediated monocyte activation

This study investigates patients carrying a leukocyte-restricted loss of heterozygosity affecting CBL, an E3 ubiquitin ligase, who present with autoinflammatory disease.

This was the grant proposal of my PhD Project. It includes all work packages that I am working on their setup and what I will analyse.

Ölkonzerne, die das Klima retten sollen
ruprecht 7 March 2023

An interview with a Fridays For Future Activist about the COP and its connection to fossil fuels.

Grundrecht oder Mord?
ruprecht 20 August 2022

A text about the Supreme Court Decision to abolish Roe vs. Wade and further consequences.

Flott oder lieber langsam?
ruprecht 10 July 2022

Fast Fashion or Second Hand - how to slow down fashion.

Pro/Contra - Menstruationsurlaub?
ruprecht 2 July 2022

Pro/Contra Additional Vacation for people who menstruate.

Gefahr im Getränk
ruprecht 22 June 2022

In Spring 2022, a student in Heidelberg had knockout drops slipped into her drink. How to protect yourself and where to find help if you’ve been affected.

Publication Pressure and Fixed-Term Contracts- The Ich-binHanna Initiative Protests Working Conditions in Research. Voices from Institutes at Heidelberg University.

Wettrennen ohne Sieger
ruprecht 25 May 2022

The Intergovernmental Panel on Climate Change’s new report reads like a dystopia. A conversation with two researchers about the 1.5-degree target and the future of the Earth.

Science, responsibility and the climate crisis
ruprecht 28 March 2022

Last year hundreds of people met at the climate change conference in glasgow to discuss solutions for the ongoing climate crisis-but what is the true impact of this conference? And how do scientists in life sciences deal with the threat to the basis of their research? A conversation with Marta Rodríguez-Martínez, sustainability officer at EMBL in Heidelberg.

Voyeurismus und Body Positivity von Dürer bis Lizzo
ruprecht 7 February 2022

The “Women’s Bodies” Exhibition at the Kurpfälzisches Museum in Heidelberg.

„Es ist vorbei“
ruprecht 1 February 2022

In the wake of the shooting spree, feelings of helplessness, uncertainty, and being overwhelmed prevail. How can we cope with what we’ve experienced?

„Für die Zukunft will ich säen“
ruprecht 30 December 2021

Sophie Mereau led a life caught between self-assertion and external control—and she did so as early as the 18th century. The writer also left her mark in Heidelberg.

Herdentiere und Individualist:innen
ruprecht 16 December 2021

Different approaches, same result. Portugal, Spain, and Denmark are showing Germany that vaccination campaigns can work, too.

Die Heidelberger Pockenepidemie
ruprecht 31 May 2021

In 1958, smallpox was rampant in Heidelberg. A conversation with medical historian Karen Nolte about this incident, its consequences, and how it all relates to COVID-19.

Vom Umdrehen des „Ja, aber“
ruprecht 19 May 2021

In everyday discussions about the climate crisis and sustainability, we all too often find ourselves agreeing—only to contradict ourselves with a big “but.” What if we refused? What if we stopped falling into that same old trap?

Von Bauern, Kühen und Pocken
ruprecht 5 March 2021

The history of vaccinations is particularly closely linked to a disease that has been eradicated—smallpox. How vaccination got its name and what farms have to do with it.

Nichts mehr auszusetzen?
ruprecht 31 January 2021

What do I want? More! I want to exercise more, read more, and work on myself more. And I want less. Eat fewer sweets, spend less time on social media, and have fewer self-doubts. Putting this into practice this year can only do me good and make me happier.

(Um-)Denken in Zeiten einer Pandemie
ruprecht 26 January 2021

To survive in a changing world, species adapt. From an evolutionary perspective, humanity is the world champion at this. However, we no longer seem willing to make use of this ability, which sets us apart as a species. On the contrary, we actively reject it.

Wie ist das jetzt mit mRNA-Impfstoffen?
ruprecht 26 January 2021

Next-Generation Vaccines and What They Can Do.