. The Canadian field-naturalist. . sia) plus a miscellaneous group (mainly forbs) into which all others were lumped. Analyses were done along a series of permanent tran- sects laid out on both islands (Figure 2). Twenty-five samples were taken at evenly spaced intervals adjacent to each transect. At Transect 5 on Island A and on Transect 4 on Island C samples were taken on either side of the line as these transects divided treated from control zones. Analyses were completed month- ly from May to August 1966 and 1967. The analysis in May evaluated only dead vegetation more than 6 inches high, a
. The Canadian field-naturalist. . sia) plus a miscellaneous group (mainly forbs) into which all others were lumped. Analyses were done along a series of permanent tran- sects laid out on both islands (Figure 2). Twenty-five samples were taken at evenly spaced intervals adjacent to each transect. At Transect 5 on Island A and on Transect 4 on Island C samples were taken on either side of the line as these transects divided treated from control zones. Analyses were completed month- ly from May to August 1966 and 1967. The analysis in May evaluated only dead vegetation more than 6 inches high, and subsequent analyses evaluated only new growth more than 3 inches high. In mid-July 1966, those parts of Island A west of Transect 5 (Zones 1 and 2) Figure 1. Islands A and C showing areas dominated by different plant species for the year 1965 through 1967. and those parts of Island C north of Transect 4 (Zones 2 and 3) were sprayed completely with the herbicide 2,4-D ester (2,4-dichloro- phenoxyacetic acid) applied from a back-pack sprayer at the rate of 2 pounds per acre. In 1967 Zones 2 and 3 of Island A, and Zones 3 and 4 of Island C were sprayed regularly with the same equipment and herbicide and at the same rate about once a week from early June to mid-August. Results Nesting Waterfowl The number of ducks recorded nesting on the two islands in Miquelon Lake for the years 1964 to 1967 is summarized in Table 1. The. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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