1630 Linden Drive
Madison, WI 53706
608-263-0964 (Office)
608-262-3322 (Fax)
ju.tiede@googlemail.com
Education and Background
B.S. Horticulture Science. Leibniz University Hanover, Germany. Final thesis at the Institute of Plant Diseases and Plant Protection, research group Applied Entomology: “Effect of extracts from bitterwood on host selection and development of the white fly Trialeurodes vaporariorum”. Sept. 2007.
M.S. Horticulture Science. Leibniz University Hanover, Germany. Final thesis at the Institute of Plant Diseases and Plant Protection, research group Applied Entomology: “Effect of Quassia-MD, a standardized extract from bitterwood, on the black bean aphid Aphis fabae.” May 2010.
Research Interests
Ecology of agricultural landscapes, ecosystem functioning, food-web interactions, and biodiversity
I study the effects of landscape composition on the diet and physiological condition of lady beetles.
The landscape composition could affect lady beetles by creating variance in spatial and temporal availability of food. While landscapes that contain a high proportion of semi-natural habitat should provide food in a high quality and quantity throughout the foraging season, beetles might experience starving conditions in landscapes that are dominated by crop land, due to the periodically absence of habitat.
In 2011 I sampled adult lady beetles at locations across a gradient of agricultural intensification in southern Wisconsin and measured traits that are related to their physiological condition like body size, content of storage fat, flight muscle mass and wing load.
To test the effect of habitat diversity on the foraging behavior of lady beetles, specimens were sampled in prairies and soy bean fields in 2012. A DNA-based analysis of the gut contents of the collected beetles shall reveal differences in their microbial gut community and dietary range and will be realized with the help of the McMahon Lab.
Selected Conference Presentations
Tiede J, Gratton C (2012) Influence of landscape composition on the physiological condition of coccinellid beetles. Poster. Wisconsin Ecology – 15th Annual Spring Symposium, Madison, Wisconsin, USA.
Tiede J, Gratton C (2012) Influence of landscape composition on the physiological condition of common Coccinellidae. Poster. Ecological Society of America (ESA) – 97th Annual Meeting, Portland, Oregon, USA.
Tiede J, Gratton C (2012) Species-specific physiological response of common Coccinellidae to the impact of landscape composition. Poster (accepted). Entomological Society of America (ESA) 60th Annual Meeting, Knoxville, Tennessee, USA.
Personal Interests
Traveling, horse-riding, yoga, classic literature
Links
University Hanover, Institute of Plant Diseases and Plant Protection
University Goettingen, Agroecology