Nutrient addition experiments in the Interlake Region of Manitoba : effect of single pulse addition in spring / T. Shane Gabor
Material type:
TextPublication details: Montreal, QC : McGill University, 1991.Description: xiii, 88 leaves : ill. ; 29 cmOnline resources: Abstract: This study examined the responses of algae and invertebrates to a single application of nutrients in a series of experimental wetland enclosures in the Interlake Region of Manitoba during 1989 and 1990. Water,sediment and vegetation chemistry were also monitored. The 3 fertilization treatments were: dissolved inorganic high (6200 .g/1 N,420 .g/1 P), dissolved inorganic low (3200 .g/1 N, 210 .g/1 P) and organic high (alfalfa: 6200 .g/1 N, 420 .g/1 P). Dissolved nutrients in the high and low treataments were quickly depleted from the system but dissolved N increased in the alfalfa treatment as decomposition progressed. No changes in sediment or vegetation chemistry were detected. Phytoplankton biomass increased in all the fertilized enclosures while epiphytic periphyton exhibited only minor responses.Epipelon biomass increased in the alfalfa treatment and metaphyton standing crops were extensive in the high treatment enclosures. In the alfalfa treatment, high microbial respiration ra
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IWWR Supported Research | Non-fiction | GAB (Browse shelf(Opens below)) | Available | 1457 |
Thesis(MSc)--McGill University, 1991.
Includes bibliographical references (leaves 44-47).
This study examined the responses of algae and invertebrates to a single application of nutrients in a series of experimental wetland enclosures in the Interlake Region of Manitoba during 1989 and 1990. Water,sediment and vegetation chemistry were also monitored. The 3 fertilization treatments were: dissolved inorganic high (6200 .g/1 N,420 .g/1 P), dissolved inorganic low (3200 .g/1 N, 210 .g/1 P) and organic high (alfalfa: 6200 .g/1 N, 420 .g/1 P). Dissolved nutrients in the high and low treataments were quickly depleted from the system but dissolved N increased in the alfalfa treatment as decomposition progressed. No changes in sediment or vegetation chemistry were detected. Phytoplankton biomass increased in all the fertilized enclosures while epiphytic periphyton exhibited only minor responses.Epipelon biomass increased in the alfalfa treatment and metaphyton standing crops were extensive in the high treatment enclosures. In the alfalfa treatment, high microbial respiration ra