Rangeland Ecology & Management

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Urea hydrolysis and nitrification in arctic salt-marsh soils: Possible constraints on the growth of forage plants
Author
Wilson, D. J., R. Van Der Wal, E. R. Chang, A. Jensen, R. L. Jefferies
Publication Year
1969
Body

Lesser snow geese (Anser caerulescens caerulescens) graze heavily on the salt marshes at La Perouse Bay, Manitoba, causing severe vegetational damage in some areas, resulting in hypersaline soils that exhibit low rates of net nitrogen mineralization. The ability of the graminoid vegetation to regrow, following a defoliation event, is limited by the supply of nitrogen. Wilson et al. studied whether temperature and salinity had an effect on urea hydrolysis rate and nitrification potential. They determined that the hypersaline soil conditions, combined with low soil temperatures, is likely limiting plant growth by restricting the available nitrogen.

Language
en
Keywords
nitrogen
salinity
temperature
grubbing
Hudson Bay Lowlands
lesser snow geese
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