DEC 12, 2018 2:45 PM PST

Bioenergy crops are hurting global biodiversity

New research published in the Proceedings of the National Academy of Sciences suggests that bioenergy crop production may not be as eco-friendly as once thought. According to the study from a collaboration of scientists, including those from Durham University and the Technical University of Munich, Germany, large-scale bioenergy crops are potentially causing just much harm to vertebrate biodiversity globally as climate change.

"While bioenergy is clearly an important tool for climate change mitigation, the potential impacts on biodiversity must not be ignored. A strong reliance on bioenergy to combat climate change could result in outcomes for biodiversity that are little better than would occur if we didn't implement bioenergy strategies, despite the consequent climate change implications. Instead, we should be thinking about how to swiftly and significantly reduce energy consumption if biodiversity is to be protected."

The study focused primarily on the impacts on vertebrate biodiversity as a result of land-use techniques. The cultivation of bioenergy crops, such as oil palm, maize and rapeseed, often involve the clearing of large swaths of forests and jungles that are crucial habitat for many species. For example, the researchers found that due to bioenergy crop expansion, we could expect to see a decrease in populations of vertebrate species including the hedgehog (44% potential loss), red squirrel (46% potential loss) and common starling (15% potential loss). The plight of the orangutan due to palm oil expansion has already been widely publicized.

Speaking about the research findings, co-author Stephen Willis, said: "We found that the combination of climate change and large-scale expansion of bioenergy crops would together threaten about 36% of the habitats of all global vertebrate species, including many that are already the subject of significant conservation work.”

In order to reach their conclusions, the team of scientists analyzed different scenarios of warming. The first examined a scenario in which the world greatly depends on bioenergy and warms roughly 1.5 degrees Celsius by 2100. The second compares biodiversity in a world three degrees warmer by 2100 with a very limited use of bioenergy.

Palm oil plantations threaten many species' habitats. Photo: Pixabay

Lead author Dr. Christian Hof, explains the significance of their findings: "In order to limit climate change in this way, we would need to cultivate bioenergy crops on approximately 4.3 % of the global land area by 2100 -- which corresponds to almost one-and-a-half times the area of all EU countries combined. This would severely affect the biodiversity currently found in these regions. The reduction of the negative effects of climate change achieved by the maximum use of bioenergy is not enough to offset this loss of biodiversity."

The authors urge that biodiversity must become a critical factor for consideration when undertaking further bioenergy cropland expansion.

Sources: Science Daily, Proceedings of the National Academy of Sciences

About the Author
  • Kathryn is a curious world-traveller interested in the intersection between nature, culture, history, and people. She has worked for environmental education non-profits and is a Spanish/English interpreter.
You May Also Like
OCT 07, 2020
Plants & Animals
Tasmanian Devils Return to Mainland Australia
OCT 07, 2020
Tasmanian Devils Return to Mainland Australia
For the first time in about 3,000 years, Tasmanian devils have returned to mainland Australia. According to a report fro ...
OCT 09, 2020
Chemistry & Physics
Plastic-Eating Cocktail Could Help Establish Infinite Recycling
OCT 09, 2020
Plastic-Eating Cocktail Could Help Establish Infinite Recycling
There's no doubt that the current recycling system isn't efficient enough in handling the plastic wastes our soc ...
NOV 30, 2020
Earth & The Environment
How is the Mongolian Plateau faring climate change?
NOV 30, 2020
How is the Mongolian Plateau faring climate change?
New research published in the journal Science predicts the future of Mongolia’s semi-arid plateau, saying tha ...
DEC 07, 2020
Microbiology
Ocean Microbes Live At the Boiling Point
DEC 07, 2020
Ocean Microbes Live At the Boiling Point
There are some very extreme environments on our planet, and it seems that microbes have been able to colonize many of th ...
DEC 23, 2020
Earth & The Environment
Improving understanding of slow-slip earthquakes
DEC 23, 2020
Improving understanding of slow-slip earthquakes
New research on subduction zones and the slow-slip behavior of tectonic plates provides insight into how megathrust eart ...
JAN 11, 2021
Earth & The Environment
The exorbitant cost of flooding
JAN 11, 2021
The exorbitant cost of flooding
New research published recently in the journal Proceedings of the National Academy of Sciences reports on the econo ...
Loading Comments...