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  1. Increasing land use intensity reduces, along with plant species diversity, the odour diversity and the structural complexity of the vegetation.
  2. Increasing odour diversity and structural complexity functionally influence herbivore-parasitoid interactions by reducing the host finding success of the parasitoids.
  3. Fertilization alters, besides plant species reduction, qualitatively and/or quantitatively the odour bouquet and the structure of the vegetation and thus the herbivore-parasitoid interaction.

In this project we investigate the landuse effect on vegetation complexity and on the the interactions between herbivore and carnivore insects. An increasing landuse decreases plant species diversity which in turn might change the structural complexity of the vegetation.

Moreover, a reduced number of plant species should affect the odour complexity of the vegetation, since specific compounds of plants that are not present are missing in the vegetation odour bouquet.

We are investigating the effect of the vegetation (odour diversity, structural complexity) on the orientation of insects from different trophic levels and their interactions in a landuse gradient in the system plantain (Plantago lanceolata; host plant) – Mecinus pascuorum and Mecinus labilis (weevils;  herbivores) – Mesopolobus incultus (parasitic wasp).


On 80 grassland plots the vegetation structure and the abundance of insects were determined. On the same plots the odour of the vegetation is collected by headspace-sampling and will be analysed by coupled gaschromatography – massspectrometry (GC-MS) in the laboratory. In April 2009 the grassland plots were fertilised on a 6 * 6 m² area. These subplots and respective control areas are currently investigated for the direct influence of fertilisation.


Doc
Herbst C., Arnold-Schwandner S., Meiners T., Peters M. K., Rothenwöhrer C., Steckel J., Wäschke N., Westphal C., Obermaier E. (2017): Direct and indirect effects of agricultural intensification on a host-parasitoid system on the ribwort plantain (/Plantago lanceolata/ L.) in a landscape context. Landscape Ecology 32 (10), 2015–2028. doi: 10.1007/s10980-017-0562-3
More information:  doi.org
Doc
Beeinflusst die umgebende Vegetation die Pflanzenchemie und damit pflanzenfressende Insekten und deren natürliche Feinde?
Wäschke N., Hancock C., Hilker M., Obermaier E., Meiners T. (2015): Does vegetation complexity affect host plant chemistry, and thus multitrophic interactions, in a human-altered landscape? Oecologia 179 (1), 281-292. doi: 10.1007/s00442-015-3347-x
More information:  doi.org
Doc
Lebensräume als komplexe Duftumgebungen: Wie beeinflusst die Pflanzenvielfalt die Orientierung pflanzenfressender Insekten und ihrer parasitischen Gegenspieler?
Wäschke N., Hardge K., Hancock C., Hilker M., Obermaier E., Meiners T. (2014): Habitats as complex odorous environment: How does plant diversity affect herbivore and parasitoid orientation? PLoS ONE 9(1): e85152. doi: 10.1371/journal.pone.0085152
More information:  doi.org
Doc
Multitrophic interactions along a land use gradient: Effects of plant diversity and vegetation odour diversity
Wäschke N. (2013): Multitrophic interactions along a land use gradient: Effects of plant diversity and vegetation odour diversity. Dissertation, FU Berlin
Doc
Intensivierung der Landnutzung auf Grünflächen beeinflusst Insekten negativer als Pflanzen
Herbst C., Wäschke N., Halboth I., Reschke S., Barto K. E., Arnold S., Geuß D., Sänger J., Meiners T., Obermaier E. (2013): Land use intensification in grasslands: higher trophic levels are more negatively affected than lower trophic levels. Entomologia Experimentalis et Applicata 147 (3), 269–281. doi: 10.1111/eea.12072
More information:  doi.org
Doc
Düngung reduziert die Anzahl der auf dem Spitzwegerich (Plantago lanceolata L.) lebenden Insekten – ein großräumiges Experiment in drei geografischen Regionen
Hancock C., Wäschke N., Schumacher U., Linsenmair K. E., Meiners T., Obermaier E. (2013): Fertilizer application decreases insect abundance on Plantago lanceolata: a large-scale experiment in three geographic regions. Arthropod Plant Interactions 7 (2), 147-158. doi: 10.1007/s11829-012-9237-9
More information:  doi.org
Doc
Hancock C. (2012): Influence of land use on Plantago lanceolata L. and its higher trophic levels at different spatial scales and in three geographic regions. Dissertation, University Wuerzburg
Doc
Einfluss der Landnutzung und der umgebenden Landschaftsstruktur auf das tritrophische System des Spitzwegerichs (Plantago lanceolata)
Arnold S. (2011): Einfluss der Landnutzung und der umgebenden Landschaftsstruktur auf das tritrophische System des Spitzwegerichs (Plantago lanceolata). Thesis, University Würzburg
Doc
Influence of mowing and grazing on a tritrophic system (Plantago lanceolata, Cecidomyiidae, Chalcidoidea)
Walter M.(2010): Influence of mowing and grazing on a tritrophic system (Plantago lanceolata, Cecidomyiidae, Chalcidoidea). Bachelor thesis, University Würzburg
Doc
Einfluss von Düngung auf verschiedene Vegetationsparameter und auf die Verbreitung der Gallmückenarten Jaapiella schmidti (Rübsamen, 1902) und Lestodiplosis sp. und den Parasitoiden Aprostocetus sp. auf Plantago lanceolata
Braukmann A.(2010): Einfluss von Düngung auf verschiedene Vegetationsparameter und auf die Verbreitung der Gallmückenarten Jaapiella schmidti (Rübsamen, 1902) und Lestodiplosis sp. und den Parasitoiden Aprostocetus sp. auf Plantago lanceolata. Bachelor thesis, University Würzburg
Doc
Randlkofer B., Obermaier E, Hilker M., Meiners T. (2010): Vegetation complexity—The influence of plant species diversity and plant structures on plant chemical complexity and arthropods. Basic and Applied Ecology 11, 383-395. doi:10.1016/j.baae.2010.03.003
More information:  doi.org
Doc
Einfluss von Landnutzung und Vegetationsparametern auf das tritrophische System des Spitzwegerichs (Plantago lanceolata) mit besonderer Berücksichtigung des Parasitoiden Mesopolobus incultus (Hymenoptera)
Sänger J.(2010): Einfluss von Landnutzung und Vegetationsparametern auf das tritrophische System des Spitzwegerichs (Plantago lanceolata) mit besonderer Berücksichtigung des Parasitoiden Mesopolobus incultus (Hymenoptera). Thesis, University Wuerzburg
Doc
Einfluss von Stickstoffdüngung auf die Herbivorie an Plantago lanceolata
Geuß D. (2009): Einfluss von Stickstoffdüngung auf die Herbivorie an Plantago lanceolata. Bachelor thesis. Freie University Berlin
Doc
Olfaktorische Orientierung der Rüsselkäferart Mecinus pascuorum in komplexen Duftumgebungen
Hardge K.(2009): Olfaktorische Orientierung der Rüsselkäferart Mecinus pascuorum in komplexen Duftumgebungen. Bachelor thesis Freie University Berlin
Doc
Der Einfluss unterschiedlicher Landnutzungsintensität auf die Herbivorendichte und – diversität von Plantago lanceolata und die strukturelle Komplexität der Vegetation
Halboth I. (2009): Der Einfluss unterschiedlicher Landnutzungsintensität auf die Herbivorendichte und – diversität von Plantago lanceolata und die strukturelle Komplexität der Vegetation. Thesis, University Wuerzburg
Doc
Untersuchungen an und um Plantago lanceolata L. auf landwirtschaftlich genutzten Flächen in der Schorfheide: Wie wirken sich Wirtspflanzenparameter und Vegetationskomplexität auf eine Herbivoren-Parasitoid-Interaktion aus?
Reschke S. P. (2009): Untersuchungen an und um Plantago lanceolata L. auf landwirtschaftlich genutzten Flächen in der Schorfheide: Wie wirken sich Wirtspflanzenparameter und Vegetationskomplexität auf eine Herbivoren-Parasitoid-Interaktion aus? Thesis, Freie University Berlin

Public Datasets

Dataset
Meiners, Torsten; Obermaier, Elisabeth; Hancock, Christine; Wäschke, Nicole (2018): Fertilization experiment - weevils and parasitoid of Plantago lanceolata (2009,2010, ALB, HAI, SCH). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/23806?version=2
Dataset
Meiners, Torsten; Obermaier, Elisabeth; Hancock, Christine; Wäschke, Nicole (2018): Fertilization experiment - vegetation complexity around Plantago lanceolata (2009,2010, ALB, HAI, SCH). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/23606?version=2
Dataset
Meiners, Torsten; Obermaier, Elisabeth; Hancock, Christine; Wäschke, Nicole (2018): Fertilization experiment - Host plant parameters of Plantago lanceolata (2009,2010, ALB, HAI, SCH). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/23726?version=2
Dataset
Meiners, Torsten; Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth (2015): Effect of fertilization on arthropod abundance on Plantago lanceolata on 21 grassland plots, Schorfheide-Chorin, 2009. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/18946?version=2
Dataset
Meiners, Torsten; Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth (2015): Effect of fertilization on herbivory damage on Plantago lanceolata on 21 grassland plots, Schorfheide-Chorin, 2009. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/18947?version=2
Dataset
Wäschke, Nicole; Meiners, Torsten; Obermaier, Elisabeth; Hancock, Christine (2014): Odour diversity field data of 26 grassland plots, 2009. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/17426?version=2
Dataset
Wäschke, Nicole; Meiners, Torsten; Obermaier, Elisabeth; Hancock, Christine (2014): Headspace collection: plant species of 26 grassland plots, 2009. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/17407?version=2
Dataset
Wäschke, Nicole; Meiners, Torsten; Obermaier, Elisabeth; Hancock, Christine (2014): Headspace collection: chemical compounds of plant odour of 26 grassland plots, 2009. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/17406?version=2
Dataset
Wäschke, Nicole; Meiners, Torsten; Obermaier, Elisabeth; Hancock, Christine (2014): Headspace collections - biomass of plant species in the laboratory, 2010. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/17387?version=2
Dataset
Wäschke, Nicole; Meiners, Torsten; Obermaier, Elisabeth; Hancock, Christine (2014): Headspace collection of different number of plant species in the laboratory, 2010. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/17386?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Meiners, Torsten; Obermaier, Elisabeth (2013): Fertilization experiment - Plant species occurrence (2010). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/16546?version=2
Dataset
Wäschke, Nicole; Herbst, Christine; Obermaier, Elisabeth; Meiners, Torsten (2013): Olfactometer assays of Mesopolobus incultus, laboratory experiments, 2010. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/15547?version=2
Dataset
Wäschke, Nicole; Herbst, Christine; Obermaier, Elisabeth; Meiners, Torsten (2013): Olfactometer data of Mecinus pascuorum, laboratory experiment, 2009. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/15546?version=2
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2011): Fertilization experiment - Vegetation matrix - Control (2009). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/12866?version=2
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2011): Fertilization experiment - Vegetation matrix - Control (2010). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/12867?version=2
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2011): Fertilization experiment - Abundance and incidence of beetles and their parasitoids (2009). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/12466?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2011): Abundance and incidence of beetles and parasitoids, grassland plots, 2010. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/12566?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2010): Iridoid glycoside content and C / N ratio of Plantago lanceolata for 77 grassland EPs, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10341?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Meiners, Torsten; Obermaier, Elisabeth (2010): Bray Curtis distance for arthropods for 77 grassland EPs, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10702?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2010): Fertilization experiment - Plantago lanceolata and the surrounding vegetation - Control (2009, ALB). Version 3. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/11361?version=3
Dataset
Wäschke, Nicole; Hancock, Christine; Meiners, Torsten; Obermaier, Elisabeth (2010): Arthropods on Plantago lanceolata for 77 grassland EPs, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/12266?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2010): Sorensen distance for arthropods for 77 grassland EPs, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10704?version=2
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2010): Fertilization experiment - Host plant parameters of Plantago lanceolata: plant level (2009,2010, ALB, HAI, SCH). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/12366?version=2
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2010): Fertilization experiment - vegetation complexity around Plantago lanceolata: plant level (2009,2010, ALB, HAI, SCH). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10680?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Meiners, Torsten; Obermaier, Elisabeth (2010): Bray Curtis distance for plant species for 77 grassland EPs, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10701?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2010): Sorensen distance for plant species for 77 grassland EPs, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10703?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2010): Shannon Index and species richness for plant species for 77 grassland EPs, 2008. Version 3. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/11040?version=3
Dataset
Wäschke, Nicole; Hancock, Christine; Meiners, Torsten; Obermaier, Elisabeth (2010): Bray Curtis distance for herbivores for 77 grassland EPs, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10720?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2010): Sorensen distance for herbivores for 77 grassland EPs, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10721?version=2
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2010): Fertilization experiment - Vegetation matrix (2009, 2nd round). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10821?version=2
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2010): Vegetation complexity around Plantago lanceolata, host plant structure and insect abundance: Plot matrix, 2008, 1st round. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10840?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Meiners, Torsten; Obermaier, Elisabeth (2010): Arthropods on Plantago lanceolata for 79 grassland EPs, 2008: plant level. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/10960?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2010): Shannon Index and species richness for herbivores for 77 grassland EPs, 2008. Version 3. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/11041?version=3
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2010): Shannon Index and species richness for arthropods for 77 grassland EPs, 2008. Version 3. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/11043?version=3
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2010): Fertilization experiment - Plantago lanceolata and the surrounding vegetation - Fertilization (2009, ALB). Version 3. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/11360?version=3
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2010): Fertilization experiment - Abundance and incidence of Cecidomyiidae, 2009. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/12326?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2009): Plant diversity (ALB, HAI, SCH, 2008)(updated). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/6400?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2009): Abundance of emerged insects from Plantago inflorescences at 80 grassland EPs - subplot level, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/6124?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2009): Abundance of emerged insects from Plantago inflorescences at 80 grasslands EPs - plant level, 2008. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/6123?version=2
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2009): Vegetation complexity around Plantago lanceolata and host plant structure: plant level, 2008, 1st round. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/4520?version=2
Dataset
Wäschke, Nicole; Hancock, Christine; Obermaier, Elisabeth; Meiners, Torsten (2009): Plant diversity (SCH, 2008)(2nd round). Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/6160?version=2
Dataset
Hancock, Christine; Wäschke, Nicole; Obermaier, Elisabeth; Meiners, Torsten (2009): Vegetation structure around Plantago lanceolata and host plant structure: plant level, 2008, 2nd round. Version 2. Biodiversity Exploratories Information System. Dataset. https://www.bexis.uni-jena.de/ddm/data/Showdata/4521?version=2

Scientific assistants

Dr. Torsten Meiners
Alumni
Dr. Torsten Meiners
PD Dr. Elisabeth Obermaier
Alumni
PD Dr. Elisabeth Obermaier
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