Urea hydrolysis and nitrification in arctic salt-marsh soils: Possible constraints on the growth of forage plants
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Authors: D. J. Wilson, R. Van Der Wal, E. R. Chang, A. Jensen, and R. L. Jefferies
Date: 1999
Journal: EcoScience
Volume: 6
Number: 1
Pages: 72-78
Summary of Methods: 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.
Article Summary / Main Points: None
Vegetation Types:
MLRA Ecoregions:
Agrovoc Control Words: Riparian zones Rangelands Wildlife
Article Review Type: Refereed
Article Type: Experimental Research
Keywords: grubbing, hudson bay lowlands, lesser snow geese, nitrogen, salinity, temperature
Annotation: None
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