Social and Behavioral Sciences | Open Access Articles

Issues Associated With New Developments And Transfers: A West Slope Perspective, Eric Kuhn

Water and Growth in the West (Summer Conference, June 7-9)

8 pages.

Fish Or Foul? Will Aquaculture Carve Out A Niche In The Gulf Of Maine?, Philip W. Conkling

Maine Policy Review

Despite early promise and an optimal environment, aquaculture has grown more slowly in Maine than it has in other parts of the United States and the world. As Philip Conkling explains, this is due to market forces, scientific and technical issues, cultural opposition, and, more recently, the threat of an endangered species listing for Atlantic salmon. While near-term prospects for significant expansion of the industry appear bleak, Conkling suggests that a fresh generation of pioneers may be able to carve out a new niche, but only by conducting “old fashioned” research and development—on the job, on the water, and in …

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Population Size Estimates For The Endangered Iowa Pleistocene Snail, Discus Macclintocki Baker, Tama K. Anderson

Journal of the Iowa Academy of Science: JIAS

Discus macclintocki Baker, the Iowa Pleistocene snail, is a federally endangered species found only on algific talus slopes in northeastern Iowa and northwestern Illinois. Population size estimates for fourteen D. macclintocki populations in Iowa and Illinois ranged from 182 to 22,125 individuals. Estimates from the program CAPTURE as well as Bayesian estimation procedures gave similar results, although the Bayesian method allowed estimation of populations that could not be estimated with CAPTURE due to small sample sizes. A comparison of two methods of sampling, visual counts of quadrats and cover boards, showed that using cover boards resulted in much higher probabilities …