IBF Eco
The temporal and spatial distribution of gall inducing sawflies on their host plant species (Salix fragilis) are recorded during two vegetation periods (2009, 2010) on an experimental plot at the Ecological-Botanical Garden of the University of Bayreuth. 40 plants belonging to four previously investigated and described clones are controlled in two week intervals. We record the occurrence of galls induced by Euura testaceipes, Phyllocolpa oblita und Pontania proxima as well as their location on the plant. Allocated shoots and leaves are marked and their growth is estimated by regular measurements. On each plant control shoots, exhibiting no galls are recorded as well. The relevance of shoot length will be investigated in the second year in a manipulation experiment, by pruning back half of the plants from each clone to induce long shoots.
Our scientific goal is to document the spatial distribution and temporal occurrence of the gall inducing species sharing the same host plants and to correlate gall occurrence and densities with factors like shoot length and shoot growth.
The technical goal is to test and improve the dataflow, especially to test export interfaces to establish multiple possibilities to edit and analyze the previously stored data. Digital data gathering using a smart phone and DiversityMobile as well as the data synchronisation and data transfer to the repository database will be tested and optimized during the first year. In the second year of investigation all data will be gathered digital and transferred to the repository database. Furthermore, possibilities of data tranfer back to the scientist, data editing and automated data analysis will be developed and tested.
Kehl, A. 2006. Wirtsselektivität gallinduzierender Pflanzenwespen (Hymenoptera, Tenthredinidae) an Weiden (Salix spp.): die Bedeutung von Phänotyp und Genotyp im Salix alba/S. fragilis-Komplex für die Belegung mit Gallen, Dissertation, Universität Bayreuth