Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4374204 | Ecological Indicators | 2010 | 12 Pages |
Abstract
All three biotic indices were negatively correlated to nutrient concentrations but the algal index had a higher correlation (rho = â0.89) than did the macroinvertebrate and fish indices (rho = â0.63 and â0.58, respectively). Biotic index scores were lowest and nutrient concentrations were highest for streams with basins having the highest poultry and cattle production. Because of the availability of litter for fertilizer and associated increases in grass and hay production, cattle feeding capacity increases with poultry production. Studies are needed that address the synergistic effect of poultry and cattle production on Ozark streams in high production areas before ecological risks can be adequately addressed.
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Authors
B.G. Justus, James C. Petersen, Suzanne R. Femmer, Jerri V. Davis, J.E. Wallace,