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Wednesday, April 11 • 1:30pm - 1:45pm
ECOSYSTEM SERVICES: Understanding Relationships Among Ecosystem Services Across Scales

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AUTHORS: Jiangxiao Qiu*, School of Forest Resources & Conservation, Fort Lauderdale Research and Education Center, University of Florida; Stephen R. Carpenter, Center for Limnology, University of Wisconsin-Madison; Eric G. Booth, Department of Civil and Environmental Engineering & Department of Agronomy, University of Wisconsin-Madison; Melissa Motew, Center for Sustainability and the Global Environment, University of Wisconsin-Madison & The Nature Conservancy; Samuel C. Zipper, Department of Earth & Planetary Sciences, McGill University & Department of Civil Engineering, University of Victoria; Christopher J. Kucharik, Department of Agronomy & Center for Sustainability and the Global Environment, University of Wisconsin-Madison; Steven P. Loheide II, Department of Civil and Environmental Engineering, University of Wisconsin-Madison; Monica G. Turner, Department of Zoology, University of Wisconsin-Madison

ABSTRACT: Sustaining ecosystem services, mitigating their tradeoffs and avoiding unfavorable future trajectories is a pressing challenge that requires enhanced understanding of their relationships across scales. Current knowledge of ecosystem service relationships is often constrained to one spatial scale or one snapshot in time. It remains unclear whether and how relationships among ecosystem services vary across spatial and temporal scales. In this research, we proposed a typology of factors that can drive changes in ecosystem service relationships across scales. We then integrated biophysical modeling with future scenarios to empirically test changes in relationships among indicators of eight ecosystem services from 2001 to 2070 across three spatial scales – grid cell, subwatershed, and watershed. We focused on the Yahara Watershed, Wisconsin in the Midwestern United States – an exemplar for many urbanizing agricultural landscapes. Our results revealed that relationships among ecosystem service indicators were not uniform over time; some exhibited high interannual variations (e.g., drainage vs. food production, nitrate leaching vs. net ecosystem exchange) and even reversed in their signs over time (e.g., perennial grass production vs. phosphorus yield). Across three spatial scales, although robust patterns exist for relationships among some regulating services (e.g., soil retention vs. water quality), not all have simple scaling rules. This is especially true for relationships of food production vs. water quality, and drainage vs. number of days with runoff >10-mm, which varied substantially across scales. Our results also showed that local tradeoffs between food production and water quality do not necessarily scale up, and thus reducing their local tradeoffs is insufficient to mitigate such tradeoffs at the watershed scale. We further explained these cross-scale patterns using our proposed typology, and concluded with management implications. Our study highlights importance of taking a dynamic perspective and accounting for spatial scales in monitoring and management to sustain future ecosystem services.

Wednesday April 11, 2018 1:30pm - 1:45pm CDT
LaSalle 2 (7th Floor)