Effects of grazing systems on habitats used by upland nesting waterfowl in south central North Dakota / Daniel R. Hertel
Material type:
TextPublication details: Fargo, ND : North Dakota State University, 1987.Description: xi, 94 leaves : ill. ; 29 cmOnline resources: Abstract: The effects of seasonlong grazing, short duration, twice-over rotation,and complementary grazing systems, and idle grassland on upland nesting ducks were determined from the results of waterfowl nesting studies,waterfowl pair counts, and visual obstruction readings taken in the vegetation. The visual obstruction readings and available nesting cover were higher (P<0.05) in idle grassland when compared to the grazed treatments. None of the grazed treatments consistently provided more (P<0.05) nesting cover when compared to the other grazed treatments.Nest densities (Mayfield) were also higher (P<0.05) in the idle area (36.5 nests/40.5 ha) when compared to seasonlong grazing (6.3 nests/40.5 ha), or twice-over rotation (11.7 nests/40.5 ha), short duration (12.3 nests/40.5 ha), and complementary (12.4 nests/40.5 ha) grazing systems.Nesting success (Mayfield) was highest in the twice-over rotation grazing system (48.7%) where an average of 5.7 nests/40.5 ha hatched per year. The short d
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Electronic Report
|
Electronic Library | Non-fiction | HER (Browse shelf(Opens below)) | Available | 1491 |
Thesis(M.S.)--North Dakota State University, 1987.
The effects of seasonlong grazing, short duration, twice-over rotation,and complementary grazing systems, and idle grassland on upland nesting ducks were determined from the results of waterfowl nesting studies,waterfowl pair counts, and visual obstruction readings taken in the vegetation. The visual obstruction readings and available nesting cover were higher (P<0.05) in idle grassland when compared to the grazed treatments. None of the grazed treatments consistently provided more (P<0.05) nesting cover when compared to the other grazed treatments.Nest densities (Mayfield) were also higher (P<0.05) in the idle area (36.5 nests/40.5 ha) when compared to seasonlong grazing (6.3 nests/40.5 ha), or twice-over rotation (11.7 nests/40.5 ha), short duration (12.3 nests/40.5 ha), and complementary (12.4 nests/40.5 ha) grazing systems.Nesting success (Mayfield) was highest in the twice-over rotation grazing system (48.7%) where an average of 5.7 nests/40.5 ha hatched per year. The short d