5th International Symposium-Workshop on Frugivores and Seed Dispersal (1985-2010)
FSD 2010 - Boehning-Gaese
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Katrin Böhning-Gaese
Institut für Zoologie, Abteilung Ökologie
Johann-Joachim Becherweg 13
Johannes Gutenberg-Universität
D-55099 Mainz
Germany
email: boehning(a)uni-mainz.de
Abstract
Movement patterns and seed dispersal by frugivorous birds in fragmented landscapes
with Johanna Lenz1, Wolfgang Fiedler2, Nils Breitbach1
1 Institut für Zoologie, Abt. V, Johannes-Gutenberg Universität Mainz, Germany
2 Max-Planck Institute for Ornithology, Radolfzell, Germany
Long-distance movements of birds are necessary to disperse seeds of trees among forests, forest fragments and other semi-natural patches of habitat. Whereas we have a first understanding of movement patterns of birds and resulting seed shadows within homogenous habitats, little is known about movement and seed dispersal in heterogeneous landscapes. We quantify movement patterns and seed dispersal of large frugivorous birds, in particular Trumpeter Hornbills (Ceratogymna bucinator) and blackbirds (Turdus merula) in fragmented landscapes in South Africa and Germany. To track movement patterns we use (among others) telemetry devices that store data on the location of the bird on the bird; the data can later be downloaded. This technique allows to collect data on movement patterns of large birds at the landscape scale with hitherto unreached quality. We use these data together with data on habitat distribution, fruit availability and gut passage times to calculate seed dispersal kernels and spatially explicit seed rain at the landscape scale. These data are essential to evaluate the ability of tropical and temperate trees to disperse in fragmented landscapes, especially under climate change.
Other presentations at FSD
Böhning-Gaese, K. (2007): Do seed dispersers matter? A biogeographical approach. P. 545-560 in: A. J. Dennis, E. W. Schupp, R. J. Green, and D. A. Westcott (eds.), Seed dispersal: Theory and its application in a changing world. CABI Publishing, Wallingford, UK.
Cipollini, M. L., L. A. Bohs, K. Mink, E. Paulk, and K. Böhning-Gaese (2002): Secondary metabolites of ripe fleshy fruits: ecology and phylogeny in the genus Solanum. P. 111-128 in: D. J. Levey, W. R. Silva and M. Galetti (eds.). Seed dispersal and frugivory: ecology, evolution and conservation. CABI Publishing, Wallingford, U.K.