"Some of the most-pressing and severe environmental perturbations threatening freshwater ecosystems operate at broad spatial scales and are changing at rapid rates such as land use conversion and climate change. However, it is not known how freshwater systems will respond to these broad-scale changes because multi-scaled, geophysical factors promote variation in freshwaters across regional to continental scales and likely influence the effects of these threats on freshwaters. To address these uncertainties requires interdisciplinary perspectives and concepts to study freshwaters within a multi-scaled geophysical context, which the fields of landscape limnology and macrosystems ecology provide. My dissertation research uses these perspectives to examine fundamental questions about spatial variation in and the multi-scaled drivers of lake nutrients and productivity at macroscales." -- Abstract.
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