Webinar-Serie zur Nachhaltigkeit Teil I: Ökologische Konzepte (38
1. Martha sucht…
www.alumniportal-deutschland.org
Webinar-Serie zur Nachhaltigkeit
TEIL I: Ökologische Konzepte
22. April, 18-19 Uhr (UTC+1): Vom Wert der Arten: Biodiversität als
Lebensgrundlage (auf Deutsch)
26. April, 17-18 Uhr (UTC+1): Plenteous oceans? How we can win
the battle against overfishing (in English)
29. April, 18-19:30 Uhr (UTC+1): Alumni präsentieren ihre
Forschungsprojekte (auf Deutsch/ Englisch)
2. Prof. Dr. Jens Gebauer
Sustainable Agricultural Production Systems
with Special Focus on Horticulture
Indigenous Fruit Trees in Africa
3.
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5.
6.
7. Genetic improvement
• Number of local types,
growth shape, size,
fruits (taste, shape,
sweetness), bark
…
• No varieties are
available in Sudan
(ecotypes)
7
14. Selected References
• Sennhenn A, Prinz K, Gebauer J, Whitbread A, Jamnadass R, Kehlenbeck K 2013 Identification of mango (Mangifera indica L.) landraces
from Eastern and Central Kenya using a morphological and molecular approach. Genetic Resources and Crop Evolution: accepted
• Gebauer J, Bernholt H, Hammer K 2013 Grewia flavescens: a potential horticultural crop? Genetic Resources and Crop Evolution:
accepted
• Gebauer J, Luedeling E 2013 A note on baobab (Adansonia digitata L.) in Kordofan, Sudan. Genetic Resources and Crop Evolution
60:1587-1596
• Goenster S, Wiehle M, Kehlenbeck K, Jamnadass R, Gebauer J, Buerkert A 2011 Indigenous fruit trees in homegardens of the Nuba
Mountains, Central Sudan: tree diversity and potential for improving nutrition and income of rural communities. Acta Horticulturae
911:355-364
• Hunsche M, Buerling K, Saied A S, Schmitz-Eiberger M, Kundi S, Gebauer J, Noga G, Buerkert A 2010 Surface properties, chlorophyll
fluorescence and light remission, and cellular compounds of Grewia tenax (Forssk.) Fiori and Tamarindus indica L. leaves as affected by
NaCl treatments. Plant Growth Regulation 61:253-263
• Thompson J L, Gebauer J, Hammer K, Buerkert A 2010 The structure of urban and peri-urban gardens in Khartoum, Sudan. Genetic
Resources and Crop Evolution 57:478-500
• Thompson J L, Gebauer J, Buerkert A 2010 Fences in urban and peri-urban gardens of Khartoum, Sudan. Forests, Trees and Livelihoods
19:379-391
• Saied A, Sohail M, Gebauer J, Buerkert A 2010 Response of Grewia tenax (Forssk.) Fiori to NaCl-induced salinity. European Journal of
Horticultural Science 75:42-50
• Bernholt H, Kehlenbeck K, Gebauer J, Buerkert A 2009 Plant species richness and diversity in urban and peri-urban gardens of Niamey,
Niger. Agroforestry Systems 77:159-179
• Saied A, Gebauer J, Hammer K, Buerkert A 2008 Ziziphus spina-christi (L.) Willd.: a multipurpose fruit tree. Genetic Resources and Crop
Evolution 55:929-937
• Gebauer J, El-Siddig K, El-Tahir B A, Salih A A, Ebert G, Hammer K 2007 Exploiting the potential of indigenous fruit trees: Grewia tenax
in Sudan. Genetic Resources and Crop Evolution 54:1701-1708
• Gebauer J, El-Siddig K, Ebert G 2002 Baobab (Adansonia digitata L.): a review on a multipurpose tree with promising future in the
Sudan. European Journal of Horticultural Science 4:155-160
• Gebauer J, El Siddig K, Salih A A, Ebert G 2004 Tamarindus indica L. seedlings are moderately salt tolerant when exposed to NaCl-
induced salinity. Scientia Horticulturae 103:1-8
18. Ecosystems are changing.
Abiotic pressures such as climatic change are altering Net
primary production and species distributions in many areas.
19. Ecosystems are changing.
Similarly biotic pressures, such as invasive plants and animals,
are changing the diversity and function of many ecosystems.
20. Ecosystems are changing.
Similarly biotic pressures, such as invasive plants and animals,
are changing the diversity and function of many ecosystems.
23. Understanding how abiotic, biotic, and
the interaction between abiotic and biotic
factors impact ecosystem structure and
function is what ecosystem ecology is all
about.
abiotic bioticabiotic biotic×
46. How will ecosystems function in the
future?
(1) Plant communities will change.
47. How will ecosystems function in the
future?
(1) Plant communities will change.
(2) Soil communities might play a role
in these changes.
48. How will ecosystems function in the
future?
(1) Plant communities will change.
(2) Soil communities might play a role
in these changes.
(3) Experiments can help us predict
how ecosystems will function in the
future.
I am an experimental ecosystem ecologist who studies the biotic and abiotic controls on ecosystem structure and function. We work across scales from the root-soil interface to the globe to predict how ecosystems and their functions will be impacted by global change
Mueller at all looked at the distribution of pinyons and junipers on the landscape pre and post two major droughts.
So, we know the above ground structure of these systems is changing.
So, we know the structure of these systems is changing. But, we don’t know what this means for the belowground communities who are responsible for processing soil carbon.
