Bush cricket Roeseliana azami

Welcome to the Population Ecology Group

We are interested in eco-evolutionary processes and how they contribute to the evolution and maintenance of biodiversity. Our special focus lies on local adaptation and the role of species interactions. We approach this topic from different angles, including long-term experimental field work, controlled laboratory experiments, and genomic analyses.
Bush cricket Roeseliana azami
Image: Holger Schielzeth

Recent news

June: Elina got elected for the PhD representative council of Jena University. Congratulations, Elina!

June: Our Collaborative Research Center is preparing for on online workshop on eco-evo meachnisms in July.

June: Our paper on systematic heterogenization is out in Nature Reviews Neuroscience. Check out our ideas to increase reproducibility and generalizability by incorporating biological variation in experimental design.

May: Anasuya has handed in her PhD thesis on the quantitative genetic architecture of morphological, song and reproductive traits in grasshoppers. Well done, Anasuya!

April: Max started his PhD project on trophic interactions along a grassland biodiversity gradient. This is one of 11 subprojects, supervised by Anne, in new Research Unit of the Jena-Experiment. Welcome, Max!

April: The Corona crisis makes life hard also in the Jena-Experiment. This year's weeding campagin will therefore be done by fewer people. We try to do our best to maintain the field site in good condition.

March: The March issue of the Laborjournal reports on citation rankings in behavioural biology with substantial contributions from our group.

March: A neat video illustrates the results of a recent study on performance of plant monocultures  published in Oikos and coauthored by Anne.

February: And now Marko Bračić from NC3 Collaborative Research Center is visiting for some analysis of optimism in mice. Good to see how the collaborative nature of the center develops!

February: Abhijeet successfully defended his PhD thesis on the giant genomes of Acridid grasshoppers. Congratulations, Abhijeet!

February: Alex Mutwill from the NC3 Collaborative Research Center is visiting for a lab rotation and for an analysis of endocrinological patterns in guinea pig social niche conformance.

January: Mahendra has joint the groups as an IMPRS PhD students who works on the molecular basis of colour polymorphisms in grasshoppers. Welcome, Mahendra!

January: Dave is attending the 2020 Workshop on Genomics at Český Krumlov.

January: Clemens Küpper is visiting and will give in talk in our EES Colloquium.

Research Show content
Bug Image: Holger Schielzeth

Our group covers three main lines of research, all united by the interest in understanding population-level biodiversity and its consequences for intra- und inter-species population dynamics. (i) trophic interactions and community dynamisc are the focus of Community Population Ecology line of research. (ii) Local adaptation, temporal population dynamics and behavioural ecology are the focus of Evolutionary Population Ecology line of resaerch. (iii) And the genomic architecture of genetic polymorphisms, speciation and hybridization are the focus of Molecular Population Ecology line of resarch. Furthermore, we are interested in (iv) ecological, evolutionary and startistical methods and therefore also cover the field that we call Population Ecology Methods.

Projects Show content
Jena Experiment aerial photograph Image: Jena-Experiment

Contemporary scientific work is often very collaborative. We are therefore involved in several large collaborative research project. This includes the long-running Jena Experiment that was established in 2002 and has been DFG-funded since then. More recently, we got engaged in a Collaborative Reserach Center (SFB-TRR 212) that is also funded by the DFG and studies the evolutionary ecology of individualized niches. Furthermore, we are participating in the German Centre for Integrative Biodiversity Research (iDiv) in Halle-Jena-Leipzig, the Michael Stifel Center Jena (MSCJ) for Data-Driven & Simulation Science and the Interantional Max Planck Research School (IMPRS) run by Max Planck Institute for Chemical Ecology in Jena. Additionally, we are involved in more grass-roots projects such as the Nutrient Network (NutNet) and the team for the Statistical Quantification of Individual Differences (SQuID). And finally, there are always ongoing individually funded projects that are also important.

Team Show content
Population Ecology Group 2016 Image: Holger Schielzeth

We are a team of currently six postdoctal researchers, three PhD students, five technical assistants, and four gardeners. We will occasionally solicit applications for funded PhD student positions. Furthermore, if you are interested in joining the group with external funding or as part of your studies, you may contact us at popecol@uni-jena.de.

Teaching Show content

We offer a variety of classes for the BSc level in Biology and the MSc level in Ecology, Evolution and Systematics. The topics range from introduction to faunistic field methods, evolutionary, community and conservation ecology, via population genetics to scientific writing and presentations. We also continously offer a selection of topics for Bachelor or Master projects. The list of ongoing and completed projects gives an impression about the range of topcis that we offer. Please to not hesitate to contact us if you are interested and movitated to work in the field of evolutiony, molecular or community ecology.

Publications Show content

Schmoll, T., Rudolfsen, G., Schielzeth, H. & Kleven, O. (2020). Sperm velocity in a promiscuous bird across experimental media of different viscosities. Proceedings of the Royal Society B doi: 10.1098/rspb.2020.1031

Ochoa-Hueso, R., Borer, E.T., Seabloom, E.W., Hobbie, S.E., Risch, A.C., Collins, S.L., Alberti, J., Bahamonde, H.A., Brown, C.S., Caldeira, M.C., Daleo, P., Dickman, C.R., Ebeling, A., Eisenhauer, N., Esch, E.H., Eskelinen, A., Fernández, V., Güsewell, S., Gutierrez-Larruga, B., Hofmockel, K., Laungani, R., Lind, E., López, A., McCulley, R.L., Moore, J.L., Peri, P.L., Power, S.A., Price, J.N., Prober, S.M., Roscher, C., Sarneel, J.M., Schütz, M., Siebert, J., Standish, R.J., Velasco Ayuso, S., Virtanen, R., Wardle, G.M., Wiehl, G., Yahdjian, L. & Zamin, T. (2020). Microbial processing of plant remains is co-limited by multiple nutrients in global grasslands. Global Change Biology doi: 10.1111/gcb.15146

Lutgen, D., Ritter, R., Olsem, R.-A., Schielzeth, H., Gruselius, J., Ewels, P., García, J.T., Shirihai, H., Schweizer, M., Suh, A. & Burri, R. (2020). Linked-read sequencing enables haplotype-resolved resequencing at population scale. Molecular Ecology Resources doi: 10.1111/1755-0998.13192

Schielzeth, H., Dingemanse, N., Nakagawa, S., Westneat, D.F., Allegue, H., Teplisky, C., Réale, D., Dochtermann, N.A., Garamszegi, L.Z. & Araya-Ajoy, Y.G. (2020). Robustness of linear mixed-effects models to violations of distributional assumptions. Methods in Ecology and Evolution doi: 10.1111/2041-210X.13434

Shah, A., Hoffman, J.I. & Schielzeth, H. (2020). Comparative analysis of genomic repeat content in gomphocerine grasshoppers reveals expansion of satellite DNA and helitrons in species with unusually large genomes. Genome Biology and Evolution doi: 10.1093/gbe/evaa119

Voelkl, B., Altman, N.S., Forsman, A., Forstmeier, W., Gurevitch, J., Jaric, I., Karp, N.A., Kas, M.J., Schielzeth, H., Van de Casteele, T. & Würbel, H. (2020). Reproducibility of animal research in light of biological variation. Nature Reviews Neuroscience doi: 10.1038/s41583-020-0313-3

Schielzeth, H. & Dieker, P. (2020). The green-brown polymorphism of the club-legged grasshopper Gomphocerus sibiricus is heritable and appears genetically simple. BMC Evolutionary Biology 20: 63. doi: 10.1186/s12862-020-01630-7

Ebeling, A., Lind, E.W., Meyer, S.T., Barnes, A.D., Borer, E.T., Eisenhauer, N. & Weisser, W.W. (2020). Contrasting effects of plant diversity on β- and γ-diversity of grassland invertebrates. Ecology e03057. doi: 10.1002/ecy.3057

Buzhdygan, O.Y., Meyer, S.T., Weisser, W.W., Eisenhauer, N., Ebeling, A., Borrett, S.R., Buchmann, N., Cortois, R., De Deyn, G.B., de Kroon, H., Gleixner, G., Hertzog, L.R., Hines, J., Lange, M., Mommer, L., Ravenek, J., Scherber, C., Scherer-Lorenzen, M., Scheu, S., Schmid, B., Steinauer, K., Strecker, T., Tietjen, B., Vogel, A., Weigelt , A. & Petermann, J.S. (2020). Biodiversity increases multitrophic energy use efficiency, flow and storage in grasslands. Nature Ecology & Evolution doi: 10.1038/s41559-020-1123-8

Dietrich, P., Roeder, A., Cesarz, S., Eisenhauer, N., Ebeling, A., Schmid, B., Schulze, E.D., Wagg, C., Weigelt, A. & Roscher, C. (2020). Nematode communities, plant nutrient economy and life-cycle characteristics jointly determine plant monoculture performance over 12 years. Oikos doi: 10.1111/oik.06989

Schielzeth, H. (2020). Varianzdekomposition mit gemischten Modellen zur Analyse von Individualität im Verhalten. Naguib, M. & Krause, E.T. (eds): Methoden der Verhaltensbiologie. pp. 94-99. Springer, Berlin. doi: 10.1007/978-3-662-60415-1_8

Gaigher, A., Burri, R., San-Jose, L.M., Roulin, A. & Fumagalli, L. (2019). Lack of statistical power as a major limitation in understanding MHC‐mediated immunocompetence in wild vertebrate populations. Molecular Ecology 28: 5115-5132. doi: 10.1111/mec.15276

Köhler, G. & Schielzeth, H. (2020). Green-brown polymorphism in alpine grasshoppers affects body temperature. Ecology and Evolution 10: 441-450. doi: 10.1002/ece3.5908

Risch, A.C., Zimmermann, S., Ochoa-Hueso, R., Schütz, M., Frey, B., Firn, J.L., Fay, P.A., Hagedorn, F., Borer, E.T., Seabloom, E.W., Harpole, W.S., Knops, J.M.H., McCulley, R.L., Broadbent, A.A.D., Stevens, C.J., Silveira, M.L., Adler, P.B., Báez, S., Biederman, L.A., Blair, J.M., Brown, C.S., Caldeira, M.C., Collins, S.L., Daleo, P., di Virgilio, A., Ebeling, A., Eisenhauer, N., Esch, E., Eskelinen, A., Hagenah, N., Hautier, Y., Kirkman, K.P., MacDougall, A.S., Moore, J.L., Power, S.A., Prober, S.M., Roscher, C., Sankaran, M., Siebert, J., Speziale, K.L., Tognetti, P.M., Virtanen, R., Yahdjian, L. & Moser, B. (2019). Soil net nitrogen mineralisation across global grasslands. Nature Communications 10: 4981. doi: 10.1038/s41467-019-12948-2

Manning, P., Loos, J., Barnes, A.D., Batáry, P., Bianchi, F.J.J.A., Buchmann, N., De Deyn, G.B., Ebeling, A., Eisenhauer, N., Fischer, M., Fründ, J., Grass, I., Isselstein, J., Jochum, M., Klein, A.M., Klingenberg, E.O.F., Landis, D.A., Lepš, J., Lindborgs, R., Meyer, S.T., Temperton, V.M., Westphal, C. & Tscharntke, T. (2019). Transferring biodiversityecosystem function research to the management of ‘real-world’ ecosystems. Advances in Ecological Research doi: 10.1016/bs.aecr.2019.06.009

Barry, K.E., Weigelt, A., van Ruijven, J., de Kroon, H., Ebeling, A., Eisenhauer, N., Gessler, A., Ravenek, J.M., Scherer-Lorenzen, M., Oram, N.J., Vogel, A., Wagg, C. & Mommer, L. (2019). Above- and belowground overyielding are related at the community and species level in a grassland biodiversity experimen. Advances in Ecological Research doi: 10.1016/bs.aecr.2019.05.001

Chakrabarty, A. & Schielzeth, H. (2020). Comparative analysis of the multivariate genetic architecture of morphological traits in three species of Gomphocerine grasshoppers. Heredity 124: 367-382. doi: 10.1038/s41437-41019-40276-41431

Schweizer, M., Warmuth, V.M., Alaei Kakhki, N., Aliabadian, M., Förschler, M., Shirihai, H., Ewels, P., Gruselius, J., Olsen, R.A., Schielzeth, H., Suh, A. & Burri, R. (2019). Genome-wide evidence supports mitochondrial relationships and pervasive parallel phenotypic evolution in open-habitat chats. Molecular Phylogenetics and Evolution 139: 106568. doi: 10.1016/j.ympev.2019.106568

González Macé, O., Ebeling, A., Eisenhauer, N., Cesarz, S. & Scheu, S. (2019). Variations in trophic niches of generalist predators with plant community composition as indicated by stable isotopes and fatty acids. Soil Organisms 91: 45-59. doi: 10.25674/so91204

 

Institute of Ecology and Evolution

The Population Ecology Group is one of the four research groups in the Institute of Ecology and Evolution (est. 2018). The joint interest of the institute representing evolutionary processes and functional biodiversity analyses in teaching and research at the FSU. The other three groups in the institute are the Biodiversity of Plants Group (Prof. Römermann)de, the Systematic Botany Group (Prof. Hellwig)de and the Ecology Group (Prof. Halle)de.

Astragalus
Biodiversity of Plants
Prof. Christine Römermann
Field Excursion France
Systematic Botany
Prof. Frank Hellwig
Leutra near Jena
Ecology
Prof. Stefan Halle
Population Ecology Group
Dornburger Str. 159
07743 Jena
Phone
+49 3641 9-49410
Fax
+49 3641 9-49402
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