Feb
Visualizing the potential impacts of Climate Change on World Wetlands
In 2007, the science of climate change achieved an unfortunate milestone: the Intergovernmental Panel on Climate Change reached a consensus position that human-induced global warming is already causing physical and biological impacts worldwide. The most recent scientific work demonstrates that changes in the climate system are occurring in the patterns that scientists had predicted, but the observed changes are happening earlier and faster than expected—again, unfortunate. Although serious reductions in manmade greenhouse gas emissions must be undertaken to reduce the extent of future impacts, climate change is already here and some impacts are clearly unavoidable. It is imperative, therefore, that we take stock of current and projected impacts so that we may begin to prepare for a future unlike the past we have known.
The wetlands provide services that are significant to the quality of life in the region, help sustain the national economy, and help protect life and property from climate extremes. Fisheries, recreation, and tourism, all thrive in the regions alongside urban development, agriculture, shipping, and the oil and gas industries. However, some regions of the world are experiencing some of the highest wetland loss rates, largely because of engineered modifications to regional watersheds and coastal landscapes. Such modifications increase the vulnerability of these wetlands to future climate variability and change. Sustainable restoration of wetlands requires planning for a more extreme future climate by returning critical water resources in the coastal landscapes to levels that existed before humans began modifying these regions three centuries ago. Wetlands support economic and ecological productivity as well as quality of life in many ways. Wetlands provide food, refuge, and nurseries for fish and shellfish, and they support the region’s large commercial and recreational fishing industries.