Geographic Distribution
I. greeleyi can be found in the Ohio River basin. This includes the Allegheny River, the headwaters of the Kentucky, Green, and Cumberland rivers, and the Tennessee River tributaries (NatureServe). I. greeleyi can be found usually upstream from the Ohio lamprey (Ichthyomyzon bdellium)(www.naturalheritage.state.pa.us/factsheet). The states in which I. greeleyi can be found include southwestern New York (Smith), northwestern Pennsylvania (Cooper), eastern Ohio (Trautman), Kentucky (Burr and Warren), West Virginia (Stauffer), Tennessee (Etnier and Starnes), northern Alabama (Mettee), northern Georgia, and western Northern Carolina (Menhinick). I. greeleyi populations have been depleted and even extirpated from some locations in Pennsylvania, West Virginia, and Kentucky. This is thought to be due to pollution (caused by runoff with cow manure, sewage, fertilizer, and pesticides), siltation (caused by overgrazing, row cropping and land clearing), and stream alteration (caused by dams) (NatureServe).
Read more about this topic: Ichthyomyzon Greeleyi
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“There is the illusion of time, which is very deep; who has disposed of it? Mor come to the conviction that what seems the succession of thought is only the distribution of wholes into causal series.”
—Ralph Waldo Emerson (1803–1882)