Project groups

7-1.11 | THE ROLE OF LIVESTOCK FOR SEED DISPERSAL IN WEST AFRICAN SAVANNAS IN REGARD TO CLIMATE INDUCED RANGE SHIFTS AND MIGRATION POTENTIALS

The aim of the project is to analyse epizoochorus seed dispersal by livestock by, to improve predictions about migration potentials of species against the background of land use and climate change. Field work will be carried out in different West African savanna biomes and will be combined with lab-experiments and modelling approaches. Data on the attachment and retention potentials of seeds will be connected with information on pasture tracks and transhumance movements and will serve to parameterise the modelling program SEED (Simulation of Epi- and Endozoochorous Seed Dispersal) for quantifying seed dispersal and obtaining predictions of seed dispersal patterns. These dispersal patterns and resulting potential migration rates will be compared to required migration distances calculated on the basis of modelling results with climate change predictions for West Africa (Project B2.7, 1. phase).
This study is closely related to other projects of the focus ecosystem ”African savanna” (A, E, F) and is also part of the cross-cutting topic “impact of climate change on biotic interactions” as well as the research question focusing on the role of migration, dispersal and establishment of organisms for climate driven distribution changes (B2).

Publications

Erpenbach, A., Bernhardt-Römermann, M., Wittig, R., Thiombiano, A. & K. Hahn (2013) : The influence of termite-induced heterogeneity on savanna vegetation along a climatic gradient in West Africa. - Journal of Tropical Ecology 29: 11-23.

Haarmeyer, D.H., Schumann, K., Bernhardt-Römermann, M., Wittig, R., Thiombiano, A. & K. Hahn (2013) : Human impact on population structure and fruit production of the socio-economically important tree Lannea microcarpa in Burkina Faso. - Agroforestry Systems 87: 1363-1375.

Jurisch, K., Hahn, K., Wittig, R. & M. Bernhardt-Römermann (2013) : Land-use impact on the growth and survival of seedlings and saplings in West African savannas. - Journal of Vegetation Science 24: 101-112.

Nacoulma, B., Schumann, K., Traoré, S., Bernhardt-Römermann, M., Hahn, K., Wittig, R. & A. Thiombiano (2011) : Impacts of land-use on West African savanna vegetation: a comparison between protected and communal area in Burkina Faso. - Biodiversity and Conservation 20: 3341-3362.