Transcript Folie 1 - uni

Wintersemester 2009/2010
Gebäude GEO I
Hörsaal H6
BayCEER Kolloquium
Vortragsreihe Ökologie und Umweltforschung
Donnerstag 19.11.2009, 16:15 Uhr, H6
Anschließend Postkolloquium mit Bier und Brezeln im Foyer H6
Dr. Henrik von Wehrden
Universität Halle-Wittenberg, Institut für Biologie
Conservation of a vast arid
ecosystem  Habitat mapping and
modelling in southern Mongolia
The southern Mongolian Gobi contains 5 large protected areas, which
cover some 100000 km2. Several endangered species are found within
this arid ecosystem, yet our knowledge regarding the ecology of these
environments and the distribution of its species is quite coarse.
Die Vortragsreihe
ist eine
interdisziplinäre
Plattform zur
Information und
Diskussion für
Studierende,
Forschende und
Lehrende
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sind herzlich
willkommen
We therefore started a multiscaled approach to gain sound spatial
knowledge about plant species and vegetation types. Based on the
plant species data biogeographical patterns were analysed and related
to environmental characteristics. Vegetation maps of all protected areas
were processed based on Landsat data; additionally an analysis of soil
and rainfall patterns as well as plant productivity was performed in order
to understand the ecological characteristics and interactions of this
highly variable ecosystem. Productivity patterns were related to
livestock numbers in order to quantify the effect of extreme events (both
droughts and extensive snowfalls).
The derived datasets and results were combined with ARCOR-collar
points of both Wild horses (Equus przewalskii) and Asiatic Wild Asses
(Equus hemionus) to understand the habitat use of these two equids on
a landscape level. In a final step we used the results gained within
Central Asia to review non-equilibrium dynamics within rangelands on a
global scale.
Kurzfassungen und weitere Infos zu den Vorträgen unter
www.bayceer.uni-bayreuth.de/kolloquium/