Lake Powell on the Colorado river shows that freshwater isn't immune to a baseline shift. Prior to the Glen Canyon dam, the water was shallower and warmer--providing a good environment for a variety of fish. With the dam, the water is deeper, cooler and it isn't nearly as hospitable to the native fish species. Edging out the rest of the natives, trout are at the heart of the Lake Powell "blue ribbon" trout fishery.
Some reports, clearly show the current temperature and how it affects the imperiled natives. [Note figure 6 on page 9, showing the fish species, their spawning & incubation water temperatures and the current temperature.]
Rather than have diversity, there is trout. Soon to be "just trout." For future
fishers, they will probably consider this a pristine trout fishery. Just like it is a pristine "house boat destination."
Maybe not "shifted baselines" but more like "baselines run amok."
Posted by Jon Rusho at August 26, 2004 12:50 PMMaybe nature will take it back instead...
http://www.sltrib.com/drought/ci_2399822
Water levels too low to generate electricity, perhaps no more recreation.
Posted by: Jon Rusho at August 30, 2004 09:41 AM