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The 1971 edition of Dr. Seuss’s The Lorax included lines describing the dire fate of the “humming fish” after their pond was polluted: “They’ll walk on their fins and get woefully weary in search of some water that isn’t so smeary. I hear things are just as bad up in Lake Erie.” The last line […]

 

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The Student’s t-test The famous t-test was initially illustrated by “Student” in a paper published in 1908 (available at: http://biomet.oxfordjournals.org/ cgi/reprint/6/1/1). In the paper, Student used several examples to illustrate the process. One example (Illustration 3) discussed the yield of barley of seeding plots with two different kinds of seed. Each type of seed (kiln-dried […]

 

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In a study of water quality trends, EPA compiled stream biological monitoring data in the Mid-Atlantic region before and after 1997. They are interested in whether there was a shift in biological conditions in streams in the area. The indicator they used is EPT taxa richness (number of taxa belong to three genera of flies […]

 

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The Everglades wetland ecosystems are phosphorus limited. After the Everglades Agriculture Areas (EAA) were established (enabled by a series of federal government constructed water diversion systems for draining part of the Everglades wetland), phosphorus-rich agriculture runoff reached the Everglades wetland and resulted in dramatic changes in parts of the Everglades wetlands. To better protect the […]

 

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