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Conservation Science for a Healthy Planet

We need biodiversity to save biodiversity in a warmer world

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July 14, 2017 German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig  see full sciencedaily article here

Climate change leads to loss of biodiversity worldwide. However, ecosystems with a higher biodiversity in the first place might be less affected a new study. Scientists found that when they experimentally warmed meadows, the diversity of nematode worms living in the soil went down in monocultures, whereas the opposite was true for meadows with many different herbaceous plant species.

…The last month was recorded as the warmest June ever in many parts of the world. Last year, 2016, was the warmest year in the modern temperature record. … poses direct threats to humans, like extreme weather events and global sea-level rise, but scientists are concerned that it may also affect our well-being indirectly via changes in biodiversity.…Today, ecologists are challenged by the question: what does a warmer world mean for biodiversity? More species, less species, or no change?…”The story is simple; you need biodiversity to conserve biodiversity in a warmer world.”

The monoculture meadow created for the experiment resembled meadows found in intensively managed agricultural land. These new research findings therefore support conservationists who are advocating for maintaining species-rich ecosystems and farmland to sustain biodiversity, and thus human well-being, in a warmer world. This may help to prevent negative effects of climate warming, although likely with some limitations.

P. Thakur, D. Tilman, O. Purschke, M. Ciobanu, J. Cowles, F. Isbell, P. D. Wragg, N. Eisenhauer. Climate warming promotes not only species diversity but also taxonomic redundancy in complex environmentsSci. Adv., 2017 DOI: 10.1126/sciadv.1700866

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