More than 30% of anthropogenic CO 2 emissions are estimated to be re-absorbed annually into the land surface (12.5 ± 3.3 GtCO 2e year −1 (2010–2019), Friedlingstein et al., 2020) through forest regrowth, enhanced photosynthetic CO 2 uptake and sequestration (Pugh et al., 2019 Ahlström et al., 2015 Schimel et al., 2015). Increasing lines of evidence show the important contribution of nature to climate change mitigation. This review aims to re-emphasize the vital relationships between biodiversity conservation actions and climate change mitigation in a timely manner, in support to major Conferences of Parties that are about to negotiate strategic frameworks and international goals for the decades to come. The close interlinkages between biodiversity, climate change mitigation, other nature's contributions to people and good quality of life are seldom as integrated as they should be in management and policy. These relationships are context and scale-dependent therefore, we showcase examples of local biodiversity conservation actions that can be incentivized, guided and prioritized by global objectives and targets. Specifically, we identify direct co-benefits in 14 out of the 21 action targets of the draft post-2020 global biodiversity framework of the Convention on Biological Diversity, notwithstanding the many indirect links that can also support both biodiversity conservation and climate change mitigation. We note that conservation actions have mainly synergistic benefits and few antagonistic trade-offs with climate change mitigation. This review highlights conservation actions which have the largest potential for mitigation of climate change. There is evidence that conservation actions that halt, slow or reverse biodiversity loss can simultaneously slow anthropogenic mediated climate change significantly. Within their respective Conventions, the biodiversity and climate interlinked challenges have largely been addressed separately. We are entering a pivotal decade for both the international biodiversity and climate change agendas with the sharpening of ambitious strategies and targets by the Convention on Biological Diversity and the United Nations Framework Convention on Climate Change. The two most urgent and interlinked environmental challenges humanity faces are climate change and biodiversity loss.
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