Dear Colleagues,

Global change dramatically impacts on forest ecosystem dynamics and service provisioning. Global change drivers affecting ecosystem functioning include: rising levels of atmospheric CO₂ and associated climate change; increased nitrogen deposition; changes in land use, mainly deforestation; introduction of invasive species; pollution and resource overexploitation. Forests constitute the greatest carbon reservoir of the terrestrial biosphere and they regulate the amount of surface and groundwater flows while maintaining high water quality. Remote sensing and modelling studies, together with long-term eddy flux measurements, suggest that forest primary productivity and water use efficiency are increasing as a result of nitrogen deposition and the CO₂ fertilization effect. Yet, these results are mostly based on temperate forests and do not always account for additional nutrient limitations (P mainly) or changes in population dynamics and species composition. Hence, we need a holistic assessment of the impact of global change on forest ecosystem functioning to predict biosphere-climatic feedbacks under changing environmental conditions. This Special Issue will address the impact of global change on forest ecosystem functioning, particularly on major geochemical cycles (C, N, P and water). We welcome experimental, observational and modelling studies, from multiple temporal and spatial scales, and biomes and addressing the impact of global change drivers on all forest ecosystem compartments.

Dr. Teresa E. Gimeno
Guest Editor

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• CO₂
• Drought
• Tree mortality
• Changes in land use
• Management
• Nitrogen