PhD Position on the Effects of Flow Intermittency on Hyporheic Biogeochemistry
The inter-university center for aquatic ecosystem research, WasserCluster Lunz, Austria (www.wcl.ac.at) will hire a PhD-Student to study the effects of flow intermittency on biogeochemical processes in the hyporheic zone. The project will run from 2018 to 2020 under the lead of Gabriele Weigelhofer (University of Natural Resources and Life Sciences Vienna (BOKU)) and Jakob Schelker (University of Vienna).
The successful candidate will be conducting his/her PhD thesis based on experimental work with hyporheic flumes close to the Oberer Seebach in Lunz am See. The candidate will be enrolled as a PhD student at BOKU within the discipline of aquatic ecology.
The ultimate aim of the project is to evaluate the importance of droughts and flow intermittency on nutrient and carbon cycling, and on the self-purification of gravel bed streams. The successful candidate is expected to set-up and maintain relevant field experiments, perform water chemical analysis and publish the results in scientific journals.
We are looking for a highly motivated candidate that holds an MSc degree in a relevant subject (aquatic ecology, biogeochemistry, aquatic microbiology, hydrology, geosciences). The successful candidate shall have experience in field based work on streams or groundwater, good skills in lab-work, data handling and data management. Further, competences in modelling and statistics are assets. The candidate should be able to conduct independent research, to work in an international team and must have good verbal and written language skills in English.
Deadline for application is 31 of December 2017.
Starting date: February 2017 or upon agreement. The duration of the contract will be three years at FWF PhD-salary. The place of work will be the WasserCluster Lunz.
PhD Position on the Feeding Ecology of Predatory Cladoceran Bythotrephes longimanus
We are seeking a highly motivated student to pursue her/his PhD. studies within the research project “Is Bythotrephes not invasive at home due to prey adaptations?” (BythoAlps), investigating the performance and impacts of a large predatory cladoceran Bythotrephes longimanus (the spiny water flea) in Austrian alpine lakes.
Bythotrephes, native to Northern Eurasia, has been causing dramatic and lasting changes in zooplankton communities in the North American lakes since its invasion in 1980s. However, so far there has been very limited knowledge about its ecology in its native region. Filling this gap might ultimately help to better understand and predict its impacts in the invaded area. The role of Bythotrephes as the predator in the lakes will be assessed by a combination of several novel and traditional approaches of both field and experimental work, in the international team lead by Radka Ptacnikova (WasserCluster Lunz), and involving Jens Nejstgaard (IGB Stechlin, Germany), Marc E. Frischer (Skidaway Institute of Oceanography, University of Georgia, USA) and Adam Petrusek (Department of Ecology, Charles University Prague, Czechia).
The focus of the PhD thesis will be in developing and application of molecular gut analyses of Bythotrephes in a close cooperation with prof. Marc E. Frischer. The student is also expected to participate in field and experimental work. The qualified candidate must hold a MSc. degree in ecology, limnology and/or related fields. Practical experience with molecular methods in ecology will be of advantage. Strong motivation, flexibility and capacity of independent work are important qualities. The candidate must be fluent in English. The candidate will be enrolled as a PhD student at the University of Vienna. The place of work will be the WasserCluster Lunz. The duration of the contract will be three years at FWF PhD-salary.
Deadline and starting date: Review of applicants will begin immediately, and the position will remain open until filled. Start date is flexible but in early 2018 is strongly preferred.