Keunyea Song

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Ponds that collect and process stormwater have become a prominent feature of urban landscapes, especially in areas recently converted to residential land use in North America. Given their increasing number and their tight hydrological connection to residential catchments, these small aquatic ecosystems could play an important role in urban biogeochemistry.(More)
The nutritional history of an organism is often difficult to ascertain. Nonetheless, this information on past diet can be particularly important when explaining the role of nutrition in physiological responses and ecological dynamics. One approach to infer the past dietary history of an individual is through characterization of its nutritional phenotype, an(More)
Humans are greatly modifying biogeochemical cycles, in part, by increasing the abundance of many trace elements in heavily developed environments. As a means to study the biogeochemical cycling of trace elements in the urban landscape, we examined their accumulation in the sediments of ponds located in residential developments. To do so, we measured the(More)
The spread of invasive plants in wetlands associated with human activity has become a serious environmental problem because of the negative effects of these species on biodiversity and biogeochemistry in ecosystems. Unlike their impacts on aboveground biodiversity, the responses of soil microbial communities and related soil characteristics to invasive(More)
Nearly half of US lakes are impaired, primarily resulting from excessive nutrients and resultant eutrophication. The stability and recycling of sediment P results in differing degrees of internal P loading, which can alter lake water quality. In this study, we asked: (1) What are the underlying mechanisms controlling internal loading (net release) and(More)
Constructed wetlands are being utilized to mitigate the impact that excess phosphorus in surface water has on the natural state of the Florida Everglades. This study investigates the role of aquatic metabolism in the retention of phosphorus in wetlands and how it varies with plant community. Eighteen 6-m2 mesocosms receiving inflows with relatively low(More)
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