Reestablishment of perennial emergent macrophytes during a drawdown in a lacustrine marsh / Charles H. Welling.
Material type:
TextPublication details: Ames, IA : Iowa State University, 1986.Description: iv, 51 leaves ; 28 cmOnline resources: Abstract: Temporal and spatial patterns in the recruitment of plant species during drawdowns of 1 and 2 years' duration in the Delta Marsh, Manitoba, are described. In a two-year drawdown, more emergents but fewer annuals were recruited during the first year than during the second. Within a growing season, most recruitment occurred in June except in certain species in June of 1983 when soil temperatures were low and soil moisture was very high. The densities of seedlings for all species combined were low at low elevations in open water or Scirpus lacustris ssp. glaucus sites,highest at intermediate elevations in the shoreline zone, and low again at high elevations where upland plants begin to dominate the vegetation.Soil moisture, soil conductivity, and litter cover also varied along the elevation gradient. With the exception of Scolochloa, the patterns of recruitment of dominant emergents in relation to elevation were not unique which leaves largely unanswered the question of how does zonati
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
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Electronic Report
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Electronic Library | Non-fiction | WEL (Browse shelf(Opens below)) | Available | 1608 |
Thesis(M.S.)--Iowa State University, 1986.
Includes bibliographical references (leaves 47-50).
Temporal and spatial patterns in the recruitment of plant species during drawdowns of 1 and 2 years' duration in the Delta Marsh, Manitoba, are described. In a two-year drawdown, more emergents but fewer annuals were recruited during the first year than during the second. Within a growing season, most recruitment occurred in June except in certain species in June of 1983 when soil temperatures were low and soil moisture was very high. The densities of seedlings for all species combined were low at low elevations in open water or Scirpus lacustris ssp. glaucus sites,highest at intermediate elevations in the shoreline zone, and low again at high elevations where upland plants begin to dominate the vegetation.Soil moisture, soil conductivity, and litter cover also varied along the elevation gradient. With the exception of Scolochloa, the patterns of recruitment of dominant emergents in relation to elevation were not unique which leaves largely unanswered the question of how does zonati