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Martha sucht…
www.alumniportal-deutschland.org
Webinar-Serie zur NachhaltigkeitTEIL 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)
Prof. Dr. Jens GebauerSustainable Agricultural Production Systems with
Special Focus on HorticultureFaculty of Life Sciences
Indigenous Fruit Trees in Africa
Ecosystems are changing.
Ecosystems are changing.
Abiotic pressures such as climatic change are altering Net primary production and species distributions in many areas.
Ecosystems are changing.
Similarly biotic pressures, such as invasive plants and animals, are changing the diversity and function of many ecosystems.
Ecosystems are changing.
Similarly biotic pressures, such as invasive plants and animals, are changing the diversity and function of many ecosystems.
Ecosystems are changing.
abiotic
biotic
abiotic
biotic
×
Ecosystems are changing.
abiotic
biotic
abiotic
biotic
×
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
biotic
abiotic
biotic
×
How will ecosystems function in the future?
How will ecosystems function in the future?
How will ecosystems function in the future?
How will ecosystems function in the future?
How will ecosystems function in the future?
Plant communities are changing.
1996
Modified from Mueller, et al. 2005
1996
Modified from Mueller, et al. 2005
1996
Modified from Mueller, et al. 2005
1996
Modified from Mueller, et al. 2005
2002
1996
Modified from Mueller, et al. 2005
2002
47% decline
1996
Modified from Mueller, et al. 2005
2002
47% decline
Belowground communities?
Soil communities might play a role in plant community change.
Soil communities might play a role in plant community change.
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Soil communities might play a role in plant community change.
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Experiments can help us predict how ecosystems will function in the future.
Changing abiotic factorsFree Air CO2 Experiment (FACE), Oak Ridge Tennessee, USA
Changing abiotic factors
Precipitation manipulation, Sevietta New Mexico, USA
Changing biotic factors
Sunset Crater herbivore manipulation, Flagstaff, Arizona, USA
Sunset Crater herbivore manipulation, Flagstaff, Arizona, USA
Changing biotic factors
Hemlock study, Coweeta Lab, North Carolina, USA
Changing biotic factors
Hemlock study, Coweeta Lab, North Carolina, USA
Changing biotic factors
How will ecosystems function in the future?
(1) Plant communities will change.
How will ecosystems function in the future?
(1) Plant communities will change.
(2) Soil communities might play a role in these changes.
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.
How will ecosystems function in the future?
questions