Project production evaluation in the prairie provinces (1978). PW Herzog

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Herzog, PW

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TextPublication details: MB/SK/AB : 1978Online resources:

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Abstract: Waterfowl productivity at thirty-two wetland projects constructed by Ducks Unlimited (Canada) was investigated in 1978 by biological consultants (D.R.M. Hatch and Associates). Projects were selected in parkland (Manitoba), prairie (Saskatchewan) and forest (Alberta) zones.Breeding pair and brood counts were conducted at bi-monthly intervals at each project. The density of breeding pairs was highest for the prairie projects, 20 pairs/km (32/mi.) of shoreline. Forest zone projects had the second highest density, 13 pairs/km (21/mi.), whereas parkland zone projects had a density of 11 pairs/km (18/mi.). This trend also was evident with estimates of brood density: prairie - 23 broods/km (37/mi.), forest - 7 broods/km (11/mi.), and parkland - 6 broods/km (10/mi.). Broods outnumbered breeding pairs at prairie projects whereas in the forest and parkland zones broods were half as numerous as pairs.The maintenance of generally stable water levels at prairie projects thus appeared to provide

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Previous	HEN Seasonal and spatial distributions of common carp in an interconnected glacial lake system in eastern South Dakota /	HER Urban wildlife research team /	HER Completed project evaluation in the prairie provinces /	HER Project production evaluation in the prairie provinces (1978).	HER Completed project evaluation in the prairie provinces /	HER Completed project evaluation : progress report /	HER Effects of grazing systems on habitats used by upland nesting waterfowl in south central North Dakota /	Next

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Waterfowl productivity at thirty-two wetland projects constructed by Ducks Unlimited (Canada) was investigated in 1978 by biological consultants (D.R.M. Hatch and Associates). Projects were selected in parkland (Manitoba), prairie (Saskatchewan) and forest (Alberta) zones.Breeding pair and brood counts were conducted at bi-monthly intervals at each project. The density of breeding pairs was highest for the prairie projects, 20 pairs/km (32/mi.) of shoreline. Forest zone projects had the second highest density, 13 pairs/km (21/mi.), whereas parkland zone projects had a density of 11 pairs/km (18/mi.). This trend also was evident with estimates of brood density: prairie - 23 broods/km (37/mi.), forest - 7 broods/km (11/mi.), and parkland - 6 broods/km (10/mi.). Broods outnumbered breeding pairs at prairie projects whereas in the forest and parkland zones broods were half as numerous as pairs.The maintenance of generally stable water levels at prairie projects thus appeared to provide

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