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Spatiotemporal trends in climate within redwood range

TitleSpatiotemporal trends in climate within redwood range
Publication TypeConference Paper
Year of Publication2014
AuthorsFernandez M
Conference NameDailyMeteo.org/2014
Date Published06/2014
PublisherFaculty of Civil Engineering, University of Belgrade
Conference LocationBelgrade
Abstract

Redwood (Sequoia sempervirens), once a widely distributed species and now limited to a narrow 50km belt along the west coast of North America, provides many ecosystem services, including reservoirs of unique biodiversity and high rates of carbon sequestration. Although our knowledge of the spatial distribution and ecophysiological traits of the species are relatively advanced, the spatiotemporal trends in climate within the species range are still unknown. Part of the reason is the complexity of the climate system, where fine scale sharp coastal energy/moisture gradients are associated with wind-driven upwelling of cold water in the coast of California. Coastal upwelling can limit increases in coastal temperatures, decoupling the system from synoptic conditions. Taking advantage of a very fine resolution time series (PRISM), for the years 1950 to 2012, we evaluated the nature of historic climate trends. We applied standard non-parametric statistics (e.g., Mann-Kendall and Theil-Sen) to evaluate the magnitude and the significance of spatio-temporal climate trends on a cell-by-cell basis. Our results characterize the environmental heterogeneity in climatic trends within the redwood range over the past 60 years, identifying areas of recent significant changes as well as areas of relative climate stability that can be used to inform natural resource management and planning in the face of global change.

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