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