Seed input as a factor in the regeneration of strip-mine wastes in Saskatchewan

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Abstract
Seed traps were set out on the spoil banks created by strip-mine coal operations in southeastern Saskatchewan. A total of 2721 seeds (2387 seeds/m2) was collected in the 1st season of which 97% was comprised of forb seeds and 3% of grass caryopses; 4216 seeds (3798 seeds/m2) were trapped in the 2nd year. Kochia scoparia was the most abundant species. Adequate seed input is occurring in the area to provide a good vegetation cover. The general absence of vegetation on the wastes must therefore reflect subsequent removal and deterioration of the seeds.

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