By withdrawing from the Paris Agreement on climate change, the United States is abdicating its role as the world leader in using science-based information to inform policy. Business, political, and scientific leaders the world over are condemning the decision. More than 190 signatory nations agreed to take actions towards reducing future temperature increases and addressing the serious threats posed by a changing climate to people, livelihoods, and nature. The science-based evidence is clear that humans are driving climate change.
Management strategies have traditionally operated under the assumption that natural systems fluctuate within a certain range—the past has served as an indicator of future conditions. But this assumption does not hold in the face of rapid climate change. Even conservative warming projections show that natural systems will experience unprecedented stresses, including shifting habitats and ecological processes (e.g. wildlife migration and reproduction) and more frequent and severe natural disturbances, such as fires, floods, and droughts. These unavoidable changes will require management that addresses ecological thresholds, tipping points, and other sources of uncertainty. Ecosystems are naturally dynamic and diverse—they are the products of change and adaptation. But human activity has impaired the ability of many systems to respond. Preserving natural function is central to maintaining resilience and safeguarding ecosystem services in the face of climate change.
I am a member of the Ecological Society of America (ESA). Great technical literature! Interesting problems!