Using multiple approaches to develop nutrient criteria for lakes in the conterminous USA

Autor:	Mihaela D. Enache, R. Jan Stevenson, Don F. Charles, Jean C. Sifneos, Alan T. Herlihy, Neil C. Kamman
Rok vydání:	2013
Předmět:	Percentile education.field_of_study Nutrient Ecology Population Environmental science Physical geography Aquatic Science education Ecology Evolution Behavior and Systematics
Zdroj:	Freshwater Science. 32:367-384
ISSN:	2161-9565 2161-9549
Popis:	We analyzed nutrient data from the National Lakes Assessment (NLA), a probability survey of 1028 lakes >4 ha in lake area across the conterminous USA to quantify and contrast different methods of setting nutrient criteria. We calculated potential nutrient criteria for total P (TP), total N (TN), and chlorophyll a (Chl a) by 4 methods (25th percentile of population, 75th percentile of least-disturbed reference sites, diatom-based paleolimnological reconstruction, and stressor modeling) and compared them to existing draft US Environmental Protection Agency (EPA) criteria within national nutrient ecoregions. At the national scale, the ecoregional criteria derived from the different approaches were highly correlated. However, absolute values differed widely among approaches within ecoregions. Population 25th percentiles were lower (often by a factor of 2–6) than values obtained with other approaches in almost all ecoregions, results indicating that population 25th percentiles cannot be used as a surro...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3656507eee10e1dfd4019df9fd2aabe4 https://doi.org/10.1899/11-097.1 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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