Old hay and Alpine ibex horns reveal how grasslands respond to climate change

How do plant ecosystems react to rising concentrations of the greenhouse gas CO2 in the atmosphere over the long term? This fundamental question is becoming increasingly pressing in light of global climate change. Researchers from the Chair of Grassland Science at the Technische Universitaet Muenchen (TUM, Germany) have now - for the first time worldwide - taken up this issue for grasslands. The scientists found their answers in two unlikely places: in horns of Alpine ibex from Switzerland and in 150-year-old hay from England.

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