The ongoing increase in atmospheric carbon dioxide will have abiotic and biotic effects through changes in surface temperatures, and direct stimulation of plant growth. These effects in turn, will alter the establishment, distribution, and impact of biological pests, (insects, disease, and weeds). Such impacts are likely to alter both the productivity and sustainability of managed eco-systems, as in agriculture or forestry, but also less managed systems (grasslands, wetlands) through changes in the biology of invasive species. Recent research has focused on increasing our understanding of the basis for expected and observed changes in both native and exotic pest species with CO2 and climate change; the probable impacts to agricultural productivity and natural habitat; and the consequences regarding the detection and management of these changes. Key uncertainties, such as CO2-induced changes in weed fecundity, will be addressed. Preliminary recommendations will be provided including potential improvements in modeling invasive distribution that will help to improve detection and response. Existing management strategies for weed control will also be discussed as well as how these strategies can be modified in a future higher-CO2, globally-warmed world.

Carbon dioxide, climate change, pest biology, and management: A new paradigm for the 21<sup>st</sup> century

248th National Meeting (2014)

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Carbon dioxide, climate change, pest biology, and management: A new paradigm for the 21st century

Carbon dioxide, climate change, pest biology, and management: A new paradigm for the 21^st century