Keep Plant Life Diverse to Buffer Against Warming Planet

biodiversity plants desert flowerIf you are of the 41 percent that lives in drylands, your future depends on supporting plant biodiversity.

An international team of researchers including Dr. Bertrand Boeken of the Jacob Blaustein Institutes for Desert Research at Ben-Gurion University of the Negev suggest in a new study that plant biodiversity preservation is crucial to buffer negative effects of climate change and desertification in drylands.

The study was published in the prestigious journal Science and is the outcome of a five-year research effort involving more than 50 researchers from 30 institutions in 15 different countries.

The results of this study indicate that the ability of ecosystems in drylands worldwide to maintain multiple functions, such as carbon storage and buildup of nutrient pools (multi-functionality) is enhanced by the number of perennial plant species, mainly shrubs and dwarf-shrubs, whereas increased average annual temperature reduces this ability.

While small-scale controlled experiments have provided evidence of the positive relationship between biodiversity and multi-functionality over the years, this study is the first in explicitly evaluating such relationship among real ecosystems at a global scale.

Drylands constitute some of the largest terrestrial biomes, collectively covering 41 percent of earth’s land surface and supporting over 38 percent of the global human population.

They are of paramount importance for biodiversity, host many endemic plant and animal species, and include about 20 percent of the major centers of global plant diversity and over 30 percent of the designated endemic bird areas.

However, dryland ecosystems are also highly vulnerable to global environmental change and desertification.

“This study provides empirical evidence on the importance of biodiversity to maintain and improve ecosystem multi-functionality in drylands, Dr. Boeken says: “Our results also suggest that the increase in average annual temperature predicted by climate change models will reduce the ability of dryland ecosystems to perform multiple functions, which are crucial to support life on earth.

“Plant biodiversity enhances this ability, therefore, maintaining and restoring it can contribute to mitigating the negative consequences of global warming and to promoting the resistance of natural ecosystems to desertification.”

Image via koyart66

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12 thoughts on “Keep Plant Life Diverse to Buffer Against Warming Planet”

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  12. sa'ada says:

    thanks for the article. i have an empty sand lot next to my house where i’d like to do some planting. just native landscape type of stuff. what kind of plants would grow well and how should they be planted?

    could we have more articles about gardening please. in conjunction with miriam’s monthly seasonal produce posts i’d like to see a series about what to plant when for kitchen gardens.

    thanks again

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