Document Type

Article

Journal/Book Title/Conference

Water Resources Research

Volume

53

Issue

12

Publisher

AGU Publications

Publication Date

12-6-2017

First Page

10188

Last Page

10200

Related Content

Jakus, P. M., Nelson, N., & Ostermiller, J. (2017). Nutrient Criterion Data. Utah State University. https://doi.org/10.15142/T3NS7T

Abstract

We present a scientific replication of a benthic algae nuisance threshold study originally conducted in Montana, but we do so using a different sampling methodology in a different state. Respondents are asked to rate eight photographs that depict varying algae conditions. Our initial results show that Utah resident preferences for benthic algae levels are quite similar to those of Montana residents, thus replicating the Montana study. For the full Utah sample, though, Cronbach's α indicated poor internal consistency in rating the photographs, so a “monotonicity rule” was used to identify respondents providing monotonic preferences with respect to chlorophyll a densities. Simple graphical analyses are combined with ordered probit analysis to determine the maximum desirable density of chlorophyll a (Chl a). Our analysis indicates that Chl alevels in excess of 150 mg Chl a/m2 are undesirable, but the regression model suggests that those with strictly monotonic preferences were far more likely favor a more stringent standard.

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