Expressions of climate perturbations in western ugandan crater lake sediment records during the last 1000 years

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Abstract

Equatorial East Africa has a complex regional patchwork of climate regimes, sensitive to climate fluctuations over a variety of temporal and spatial scales during the late Holocene. Understanding how these changes are recorded in and interpreted from biological and geochemical proxies in lake sedimentary records remains a key challenge to answering fundamental questions regarding the nature, spatial extent and synchroneity of climatic changes seen in East African palaeo-records. Using a paired lake approach, where neighbouring lakes share the same geology, climate and landscape, it might be expected that the systems will respond similarly to external climate forcing. Sediment cores from two crater lakes in western Uganda spanning the last ∼1000 years were examined to assess diatom community responses to late Holocene climate and environmental changes, and to test responses to multiple drivers using redundancy analysis (RDA). These archives provide annual to sub-decadal records of environmental change.

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Mills, K., Ryves, D. B., Anderson, N. J., Bryant, C. L., & Tyler, J. J. (2014). Expressions of climate perturbations in western ugandan crater lake sediment records during the last 1000 years. Climate of the Past, 10(4), 1581–1601. https://doi.org/10.5194/cp-10-1581-2014

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