C. Williamson

Publications174
h-index56
Citations11,906
Highly Influential Citations579
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The attenuation of solar UV radiation in lakes and the role of dissolved organic carbon
Diffuse attenuation coefficients (&) for solar UV radiation (UVR) (305, 320, 340, 380 nm, and PAR) were measured in the mixed layer of 65 lake sites in Alaska, Colorado, and Pennsylvania and the…
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Rapid and highly variable warming of lake surface waters around the globe
In this first worldwide synthesis of in situ and satellite‐derived lake data, we find that lake summer surface water temperatures rose rapidly (global mean = 0.34°C decade−1) between 1985 and 2009.…
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Ultraviolet radiation in North American lakes: Attenuation estimates from DOC measurements and implications for plankton communities
Climate warming in North America is likely to be accompanied by changes in other environmental stresses such as UV-B radiation. We apply an empirical model to available DOC (dissolved organic C) data…
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Lake metabolism and the diel oxygen technique: State of the science
Significant improvements have been made in estimating gross primary production (GPP), ecosystem respiration (R), and net ecosystem production (NEP) from diel, “free‐water” changes in dissolved oxygen…
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Dissolved organic carbon and nutrients as regulators of lake ecosystems: Resurrection of a more integrated paradigm
The primary interpretive paradigm used to study lakes is their trophic status. Oligotrophic lakes have low nutrient loading and low productivity, while eutrophic lakes have high nutrients and high…
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Lakes and reservoirs as sentinels, integrators, and regulators of climate change
Climate change is generating complex responses in both natural and human ecosystems that vary in their geographic distribution, magnitude, and timing across the global landscape. One of the major…
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Effects of UV radiation on aquatic ecosystems and interactions with climate change.
TLDR
There remains the question as to whether a decrease in population size of the more sensitive primary producers would be compensated for by an increase in the population sizes of more tolerant species, and therefore whether there would be a net negative impact on the absorption of atmospheric carbon dioxide by these ecosystems.
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Toward a more comprehensive theory of zooplankton diel vertical migration: Integrating ultraviolet radiation and water transparency into the biotic paradigm
TLDR
This new transparency-regulator hypothesis provides a more versatile theoretical framework to explain variation in DVM across waters of differing transparency and enables clearer predictions of how the wide range of ongoing transparency-altering local, regional, and global environmental changes can be expected to influence DVM patterns in both inland and oceanic waters.
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BENEFICIAL AND DETRIMENTAL EFFECTS OF UV ON AQUATIC ORGANISMS: IMPLICATIONS OF SPECTRAL VARIATION
Solar ultraviolet radiation (UVR) may have beneficial as well as detrimental effects on living systems. For example, UV-B radiation (280-320 nm) is generally dam- aging, while UV-A radiation (320-400…
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Environmental Constraints on Spawning Depth of Yellow Perch: The Roles of Low Temperature and High Solar Ultraviolet Radiation
Abstract The roles of temperature and ultraviolet radiation (UVR) in determining the spawning success of yellow perch Perca flavescens were investigated in two Pennsylvania lakes with different…
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