Climate change is no doubt one of the major catastrophic consequences for the natural world. This fourth largest driver is not just the villain and scientists say that fighting climate change alone will not be enough to prevent the further loss of biodiversity.
Published during the COP27 climate summit, the study led by Dr Pedro Jaureguiberry from UNC in Argentina and Dr Nicolas Titeux said greenhouse gasses have been known to be the leading cause of climate crisis for decades. However, they point out that is also important to understand the reasons behind the enormous and rapid decline in species. “A million species of animal and plant are threatened with extinction within the next few decades without significant countermeasures. Ecosystems worldwide are changing away from their natural condition, which means that they are increasingly unable to provide crucial ecosystem services for human well-being,” the authors said. .
Titeux said that the various direct drivers should be addressed with similar ambition as the climate crisis and as a whole.
The authors note that climate change is already in second place as a direct driver of species loss in the oceans. Here, the exploitation of fish stocks plays the biggest role. However, based on current developments, the authors assume that the importance of climate change for species loss and the decline of ecosystem services will increase in the coming years and decades and move up in the ranking of direct drivers, they stated.
The authors of this study thus confirm and specify the facts that the Global Assessment of the World Biodiversity Council IPBES had already indicated in 2019. “Our publication shows the depth of the work, which was performed in the Global Assessment of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), where only the main results could be shown”, says Josef Settele from UFZ and Co-chair of the Global Assessment of IPBES. “It indicates the profoundness of the IPBES work”.
NEED FOR NATURE-BASED SOLUTIONS
On the study, Jaureguiberry says: “Our study brings comprehensive and rigorous information on which drivers cause the most damage to biodiversity at multiple levels, from regions and realms to the different facets of biodiversity, highlighting the importance of each driver in particular contexts. Hopefully, this will contribute to a more holistic approach to generate more efficient policies to reverse biodiversity loss.”
In particular, the research demonstrates the need for a more holistic approach that will tackle the twin threats of climate and the biodiversity crisis together. Titeux points out that “The current global agreements such as the Convention on Biological Diversity and the UN Framework Convention on Climate Change can focus too narrowly on one driver, overlooking or, in the worst-case, undermining solutions for others”.
Professor Andy Purvis from the Natural History Museum in London explains: “Climate change and biodiversity loss have been tackled largely separately, by different policies that haven’t always considered the other problem. For example, biofuels are proposed as one way to get to net zero, but the expansion of plantations into natural forest that could result would be terrible for nature.”
The paper also highlights some of the ‘nature-positive’ solutions that tackle both climate change and biodiversity loss such as large-scale restoration of natural forests and effective protection of coastal wetlands.
Andy Purvis adds:” I’d love for ‘nature-positive’ to get into the public consciousness as much as ‘net zero’ has. If future generations are going to have the same birthright we had of a liveable, supportive planet, then all parts of society will have to transition as quickly as possible to being both net zero and nature-positive.