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Shewmaker, Glenn E. (1999) Wetlands. In: McGraw-Hill Yearbook of Science & Technology. pp. 408-410. McGraw-Hill Inc., New York.

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Water quality from point sources of pollution such
as factories and city sewers has been regulated in the
United States since the 1970s. Recently, nonpoint
source effects on water quality have become important
issues. Croplands and grazing lands are increasingly
scrutinized for their contribution to nutrient
loading of water bodies. While improvements in
grazing management usually can reduce such loading,
the nutrient loading contribution by grazing animals
may be overestimated, and goals for reduction
of nutrient loading may be unrealistic. Determining
background levels is difficult but critical to setting
realistic goals for nutrient loading.

Item Type: Book Section
NWISRL Publication Number: 0979
Subjects: Mass Import - unclassified
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:55
Last Modified: 17 Nov 2016 16:12
Item ID: 798