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Kinetics of nitrogen and phosphorus release in varying food supplies by Daphnia magna
(Kluwer Academic Publishers; Dr. W. Junk Publishers ; Springer Science+Business Media, 1982-10)
Rates of nitrogen and phosphorus release from individual Daphnia magna were determined by measuring ammonia and soluble reactive phosphorus in successive 10-min incubations in small (0.05 ml) vessels after the animals were ...
The effects of size of opening in vegetation and litter cover on seedling establishment of goldenrods ( Solidago spp.)
(Springer-Verlag, 1983-11)
We investigated the effects of size of opening in the vegetation and litter cover on seedling establishment of two species of goldenrods ( Solidago spp.) in an abandoned field in southwestern Michigan, U.S.A. Seeds of S. ...