Jeroen Everaars

Dr. Jeroen Everaars

Helmholtz Centre for Environmental Research - UFZ
Department of Community Ecology
Theodor-Lieser-Strasse 4, 06120 Halle

Tel.: +49 345 558 5308

Research scientist

Landscape mosaic in Germany

Research and scientific interests

Current research

Managing biodiversity in spatially and temporally complex agricultural landscapes

As an animal and plant ecologist, I deal with biodiversity responses of bees and birds in agriculturally dominated landscapes. Both animal groups are used to study the effects of land-use change on a multi-year timescale on six large sites between Halle and Magdeburg. I am interested in trait-based differences in responses to land-use changes.


* Scaling laws in nature
* Nature conservation
* Entomology (ecology and biodiversity of butterflies, bees and beetles)
* Spatially explicit, individual based simulation models
* Invertebrate paleontology and evolutionary patterns


* Programming and statistical data analysis in C++ and R
* Entomological methods (sampling, pinning, identification)
* Visual presentation and image editing


Current Projects

Past Projects


ISI-listed papers, book chapters and theses

2016 (1)

  • Frenzel, M., Everaars, J., Schweiger, O., (2016):
    Bird communities in agricultural landscapes: What are the current drivers of temporal trends?
    Ecol. Indic. 65 , 113 - 121
    full text (url)

2014 (2)

  • Everaars, J., Dormann, C.F., (2014):
    Simulation of solitary (non-Apis) bees competing for pollen
    In: Devillers, J., (ed.)
    In silico bees
    CRC Press, Boca Raton, FL, p. 209 - 268
    full text (url)
  • Everaars, J., Frank, K., Huth, A., (2014):
    Species ecology and the impacts of bioenergy crops: an assessment approach with four example farmland bird species
    GCB Bioenergy 6 (3), 252 - 264
    full text (url)

2012 (1)

  • Everaars, J., (2012):
    The response of solitary bees to landscape configuration with focus on body size and nest-site preference
    Dissertation, Martin-Luther-Universität Halle-Wittenberg
    PhD Dissertation 7/2012
    Helmholtz-Zentrum für Umweltforschung - UFZ, Leipzig, 146 pp.
    full text (pdf)

2011 (2)

  • Everaars, J., Strohbach, M.W., Gruber, B., Dormann, C.F., (2011):
    Microsite conditions dominate habitat selection of the red mason bee (Osmia bicornis, Hymenoptera: Megachilidae) in an urban environment: a case study from Leipzig, Germany
    Landsc. Urban Plan. 103 (1), 15 - 23
    full text (url)
  • Gruber, B., Eckel, K., Everaars, J., Dormann, C.F., (2011):
    On managing the red mason bee (Osmia bicornis) in apple orchards
    Apidologie 42 (5), 564 - 576
    full text (url)

2005 (1)

  • Master thesis on "Size-related co-existence of herbivores in a fractal landscape".

Lesure-time interests

* Nature Photography
* Digital image editing
* Advanced Origami
* Designing Posters, Brochures, Logos
* Camping and Hiking

Curriculum Vitae

Since 2013 Research scientist, Helmholtz Centre for Environmental Research - UFZ, Department of Community Ecology, Germany. Quantifying the influence of land-use and weather on bee and bird communities.
2010-2013 Research scientist, Helmholtz Centre for Environmental Research - UFZ, Department of Ecological Modelling, Germany. Quantifying the impact of bioenergy crops on the abundance of farmland birds and development of mitigation strategies.
2006-2010 Research scientist, Helmholtz Centre for Environmental Research - UFZ, Department of Landscape Ecology, Germany. See Ph.D.
2006-2012 Ph.D., Department of Zoology, Martin-Luther-University Halle-Wittenberg, Germany, entitled "The response of solitary bees to landscape configuration with focus on body size and nest-site preference"
* Review of body size effects on foraging traits, affecting flight and pollen collection behaviour.
* Development and application of a spatially-explicit individual-based simulation model, in which individual solitary bees forage and compete for pollen. How does landscape structure affect different bees (differing in body size and nesting guild) and how does it affect pollination services?
* Field study on habitat selection by "urban bees". We used trap-nests in the city of Leipzig to investigate the distribution of Osmia bicornis in relation to land-use and local parameters.
2005-2006 Curator of the insect collection (Coleoptera), University of Amsterdam (UvA), The Netherlands
1998-2005 M.Sc., Biology with specialization in ecology, State University of Groningen (RUG), The Netherlands
* Research project in Theoretical Ecology. Development of a spatially explicit simulation model to test a theory about scaling laws (size relations) of herbivores.
* Research project in Ecuador in Tropical Entomology. Investigation of coleopteran diversity over an altitude gradient in a primary cloud forest.
* Essay: “Extinction vulnerability of insect orders in relation to their life history”.
* Specialization subjects: vegetation dynamics, conservation biology, alpine plant diversity, landscape ecology, dynamics of biodiversity, biostatistical analysis, geology, insect biology, insect-plant interactions, modelling, chaos theory, behaviour and ecology, genetics and evolution.