{"id":3816,"date":"2022-02-14T12:05:39","date_gmt":"2022-02-14T12:05:39","guid":{"rendered":"http:\/\/the-jena-experiment.de\/?p=3816"},"modified":"2022-03-23T11:34:26","modified_gmt":"2022-03-23T11:34:26","slug":"master-thesis-on-the-role-of-intraspecific-chemical-plant-variation-on-associated-arthropod-food-web-structure-jena-germany","status":"publish","type":"post","link":"https:\/\/the-jena-experiment.de\/index.php\/2022\/02\/14\/master-thesis-on-the-role-of-intraspecific-chemical-plant-variation-on-associated-arthropod-food-web-structure-jena-germany\/","title":{"rendered":"Master thesis on the role of intraspecific chemical plant variation on associated arthropod food web structure (Jena, Germany)"},"content":{"rendered":"\n

To what extent chemical profiles and chemical diversity of the basal resource (tansy) determine food web dynamics and structure aphid metacommunities.<\/em><\/p>\n\n\n\n

Background<\/strong>: <\/strong><\/p>\n\n\n\n

At an intraspecific level, phenotypic differences\ncan be important in explaining ecological functions. For instance, plant\nchemical diversity influences the trophic structure of food chains by\nmodulating bottom-up and top-down effects on herbivores, predators, and\nparasitoids.<\/p>\n\n\n\n

Tansy plants are well-known\nfor being highly diverse in the blend and individual abundance of secondary\nmetabolites. Based on a cluster analysis of differences on those chemical\nclasses and concentrations, individual plants can be grouped in terms of its\nchemotype. By creating a field experiment with plant communities that differ in the\nnumber of plant chemotypes they contain, we will evaluate the effects on plant-insect (e.g. host selection and herbivore\nperformance) and insect-insect (e.g. competition, mutualism, predation rate and\nparasitoid performance) interactions in a field set-up.<\/p>\n\n\n\n

Start of the projects<\/strong>: As soon as possible
Project:<\/strong> Influence of plant (chemo)diversity on insect communities<\/p>\n\n\n\n

The master\u2019s thesis includes the following work steps:
1. Literature review (May)Field work in Jena (June\/July)
2. Statistical data analysis and writing (August\/October)<\/p>\n\n\n\n

In the best case, the data can be published in a\njoint paper. You will work in close collaboration with a PhD candidate. The\nmaster\u2019s thesis is supervised in English, but speaking the German language is a\nbig advantage.<\/p>\n\n\n\n

If you are interested,<\/strong> please contact: Lina Ojeda (lina.ojeda@tum.de<\/a>)   <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n
\n
\"\"<\/figure>\n<\/div>\n\n\n\n
\n
\"\"<\/figure>\n<\/div>\n\n\n\n
\n
\"\"<\/figure>\n<\/div>\n<\/div>\n\n\n\n

Masterarbeit\n\u00fcber die Rolle intraspezifischer chemischer Pflanzenvariationen f\u00fcr die\nStruktur von Nahrungsnetzen assoziierter Arthropoden (Jena, Deutschland)<\/strong><\/p>\n\n\n\n

Inwieweit\nchemische Profile und chemische Diversit\u00e4t der basalen Ressource (Rainfarn) die\nDynamik von Nahrungsnetzen bestimmen und Metagemeinschaften von Blattl\u00e4usen\nstrukturieren<\/em>.<\/em><\/p>\n\n\n\n

Hintergrund<\/strong>: <\/strong><\/p>\n\n\n\n

Auf intraspezifischer Ebene k\u00f6nnen ph\u00e4notypische Unterschiede f\u00fcr die\nErkl\u00e4rung \u00f6kologischer Funktionen wichtig sein. So beeinflusst beispielsweise\ndie chemische Vielfalt von Pflanzen die trophische Struktur von Nahrungsketten,\ndurch Bottom-up- und Top-down-Effekten auf Pflanzenfresser, R\u00e4uber und Parasitoiden.<\/p>\n\n\n\n

Rainfarn ist daf\u00fcr bekannt, dass er eine gro\u00dfe Vielfalt an\nSekund\u00e4rmetaboliten aufweist und diese in gro\u00dfer Menge enthalten sind. Mit\nHilfe einer Clusteranalyse konnten die einzelnen Pflanzen anhand ihrer\nchemischen Profile in unterschiedliche Chemotypen zusammengefasst werden. In\neinem Feldexperiment mit Pflanzengemeinschaften verschiedener Chemodiversit\u00e4t,\nwerden wir die Auswirkungen auf die Wechselwirkungen zwischen Pflanzen und\nInsekten (z.B. Wirtsauswahl und Verbreitung von Herbivoren) und zwischen\nInsekten und anderen Insekten (z.B. Konkurrenz, Mutualismus, R\u00e4uber-Beute-Beziehung\nund Parasitoidrate) in einem Freilandversuch untersuchen.<\/p>\n\n\n\n

Beginn der Projekte:<\/strong> So bald wie m\u00f6glich<\/em>
Projekt:<\/strong> Einfluss der Pflanzen(chemo)diversit\u00e4t auf Insektengemeinschaften<\/p>\n\n\n\n

Die Masterarbeit umfasst die folgenden Arbeitsschritte:
1. Literaturrecherche (Mai)
2. Feldarbeit in Jena (Juni\/Juli)<\/p>\n\n\n\n

Statistische Datenauswertung und Verfassen der Arbeit (August\/Oktober)<\/p>\n\n\n\n

Im besten Fall k\u00f6nnen die Daten in einer gemeinsamen Arbeit ver\u00f6ffentlicht\nwerden. Das Projekt wird in enger Zusammenarbeit mit einer Doktorandin durchgef\u00fchrt.\nDie Masterarbeit wird in englischer Sprache betreut, Deutschkenntnisse sind jedoch\nvon Vorteil.<\/p>\n\n\n\n

Wenn Sie interessiert sind<\/strong>, wenden Sie sich bitte an: Lina Ojeda (lina.ojeda@tum.de<\/a>)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n
\n
\"\"<\/figure>\n<\/div>\n\n\n\n
\n
\"\"<\/figure>\n<\/div>\n\n\n\n
\n
\"\"<\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

To what extent chemical profiles and chemical diversity of the basal resource (tansy) determine food web dynamics and structure aphid metacommunities. Background: At an intraspecific level, phenotypic differences can be…<\/p>\n","protected":false},"author":2,"featured_media":3819,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[15,10],"tags":[],"_links":{"self":[{"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/posts\/3816"}],"collection":[{"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/comments?post=3816"}],"version-history":[{"count":8,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/posts\/3816\/revisions"}],"predecessor-version":[{"id":3857,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/posts\/3816\/revisions\/3857"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/media\/3819"}],"wp:attachment":[{"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/media?parent=3816"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/categories?post=3816"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/tags?post=3816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}