Katja Reichel

Katja Reichel
Freie Universität Berlin | FUB · Division of Botany

Dr

About

13
Publications
1,564
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65
Citations
Introduction
I have a very broad interest in the evolution of plants, ranging from paleontology and systematics through ecology and genetics/genomics to conservation biology. Since I was a teenager, I have been fascinated by a feature which aphids (and others) have in common with many plants: partial clonality. I now combine mathematical models with ecological and genomic data to improve the conservation of threatened (clonal) plant species.
Additional affiliations
September 2016 - February 2022
Freie Universität Berlin
Position
  • Postdoc
Description
  • Research in Population & Conservation Genetics, Undergraduate courses in Botany and Population Genetics, Supervision of BSc/MSc theses
September 2013 - July 2014
Université de Rennes 1
Position
  • Teaching Assistant
Description
  • 1st year lab courses in Botany
November 2012 - October 2015
French National Institute for Agriculture, Food, and Environment (INRAE)
Position
  • PhD Student
Description
  • Research on Theoretical Evolutionary Biology
Education
November 2012 - December 2015
Agrocampus Ouest
Field of study
  • Biology
July 2010 - February 2011
James Cook University
Field of study
  • Tropical Ecology & Conservation
September 2006 - February 2012
Technische Universität Dresden
Field of study
  • Biology

Publications

Publications (13)
Preprint
Full-text available
Most plastid genome sequences are assembled from short-read whole-genome sequencing data, yet the impact that sequence coverage and the choice of assembly software can have on the accuracy of the resulting assemblies is poorly understood. In this study, we test the impact of both factors on plastid genome assembly in the threatened and rare endemic...
Article
Full-text available
Plant diversity is decreasing mainly through anthropogenic factors like habitat fragmentation, which lead to spatial separation of remaining populations and thereby affect genetic diversity and structure within species. Twenty populations of the threatened grassland species Crepis mollis were studied across Germany (578 individual plants) based on...
Article
Full-text available
Background: Partially clonal organisms are very common in nature, yet the influence of partial asexuality on the temporal dynamics of genetic diversity remains poorly understood. Mathematical models accounting for clonality predict deviations only for extremely rare sex and only towards mean inbreeding coefficient [Formula: see text]. Yet in parti...
Article
Full-text available
Evaluating the consequences of the decline of threatened species on their population genetic structure is crucial for establishing effective conservation strategies in the strongly fragmented landscapes of Central Europe. Laserpitium prutenicum is a bi- to perennial forb occurring in intermittently wet meadows and light oak forests throughout centr...
Article
Full-text available
Neutral patterns of population genetic diversity in species with complex life cycles are difficult to anticipate. Cyclical parthenogenesis (CP), in which organisms undergo several rounds of clonal reproduction followed by a sexual event, is one such life cycle. Many species, including crop pests (aphids), human parasites (trematodes) or models used...
Article
Full-text available
Background: Markov chains are a common framework for individual‐based state and time discrete models in evolu‐ tion. Though they played an important role in the development of basic population genetic theory, the analysis of more complex evolutionary scenarios typically involves approximation with other types of models. As the number of states incr...
Thesis
Les systèmes reproducteurs déterminent comment le matériel génétique est transmis d’une génération à la suivante […]. Les espèces qui combinent de la reproduction sexuée et asexuée/clonale sont très répandues [… mais] l’effet de leur système reproducteur sur leur évolution reste énigmatique et discuté.L’objectif de cette thèse est de modéliser la d...
Poster
Full-text available
Les organismes partiellement asexués sont très fréquents et/ou importants dans la plupart des écosystèmes. Nous nous attachons à comprendre comment les modes de reproduction partiellement asexués impactent la diversité génétique. Pour ce faire, nous utilisons des modèles mathématiques stochastiques qui permettent de formaliser l’évolution des pools...
Working Paper
Full-text available
Markov chains are a common framework for individual-based state and time discrete models in ecology and evolution. Their use, however, is largely limited to systems with a low number of states, since the transition matrices involved pose considerable challenges as their size and their density increase. Big, dense transition matrices may easily defy...
Poster
Full-text available
Partially asexual organisms are able to reproduce both sexually and asexually (clonally). They occur throughout all the earth’s biomes and often play ecologically important roles (colonizers, ecosystem engineers, parasites, invasives). We are interested in the effect of partial asexuality on evolution. Using a discrete-time Markov chain model based...
Poster
Full-text available
Population genetics provides powerful tools for assessing the genetic diversity of populations, and may therefore be helpful for predicting their potential for adaptation and survival. As more and more studies make use of these tools, the demand for more sophisticated data analysis methods also increases. One particular problem is the applicability...
Poster
Full-text available
Being capable of both sexual and asexual reproduction is a common feature of many organisms throughout the earth’s biomes. Yet, what does it imply for the short-term dynamics of genotypicdiversity? We used a state-based stochastic model (Markov chain) to compare evolutionary trajectories in a simplistic diploid, single locus 2-allele model of a pop...
Article
Full-text available
Laserpitium prutenicum, once a „characteristic summer plant of the Oberlausitz“, has experienced a loss of about 90% of its populations in Eastern Saxony. This is connected to changes in land use during the last 70 years. L. prutenicum occurs in two types of habitat, „forest“ and „meadow“, which were further characterized based on vegetation survey...

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Projects

Projects (2)
Project
Revisiting the population genetics and genomics of partially clonal organisms