Effects of Grazing Systems on Habitats Used by Upland Nesting Waterfowl in South Central North Dakota PDF Download
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Author: Daniel Robert Hertel
Publisher:
ISBN:
Category : Range management
Languages : en
Pages : 188
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Book Description
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
Author: Daniel Robert Hertel
Publisher:
ISBN:
Category : Range management
Languages : en
Pages : 188
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Book Description
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
Author: Leo M. Kirsch
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 12
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Book Description
Author: Kevin K. Sedivec
Publisher:
ISBN:
Category :
Languages : en
Pages : 250
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Book Description
Effects of seasonlong grazing, complementary, short-duration,switchback, and twice-over rotation grazing treatments, and non- grazed prairie on upland nesting ducks were evaluated from nesting studies on the Central Grasslands Research Station. Undisturbed cover contained the highest densities of duck nests on the Station. Undisturbed cover consisted of grazing treatments before the initiation of the grazing season, which contained the highest percentage of total duck nests at 58.8%, followed by deferred areas on rotation grazing treatment (16.7%),and an idle area (13.5%). Only 11% of ducks nested on grazed plots.Nesting success in 1987 and 1988 was highest on twice-over rotation grazing system with 49.3 and 34.0 percent, respectively. Nesting success in 1987 and 1988 on an idle area was 16.3 and 7.0 percent, respectively.Ducklings produced was highest on switchback grazing system with 124.3 per 40.5 ha in 1987 and highest on twice-over rotation grazing system with 74.1 per 40.5 h.
Author: Kevin Kyle Sedivec
Publisher:
ISBN:
Category : Grazing
Languages : en
Pages : 250
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Book Description
Author:
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 704
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Author:
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 318
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Book Description
Author:
Publisher:
ISBN:
Category : Agricultural conservation
Languages : en
Pages : 402
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Book Description
Author: Terry A. Messmer
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 224
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Book Description
The effects of season-long grazing, short duration and twice-over deferred rotation grazing systems, and idle non-use areas on upland nesting birds were evaluated from the results of nesting studies,breeding bird surveys, and visual obstruction readings of vegetative cover. Higher nesting densities of upland nesting birds were found in the undisturbed vegetation of idled areas, the ungrazed areas of season-long grazing treatments, and on the pastures or cells of grazing systems where grazing was deferred until later in the nesting season.This strong relationship between higher nest densities and undisturbed cover was clearly related to the presence of nesting cover, residual or new growth, of sufficient height and density to attract nesting hens.Dense nesting cover with low levels of disturbance were safer nest sites. Findings suggest that well-managed grazing practices and grazing systems, employing pasture deferments, may be beneficial to upland nesting birds if implemented on a.
Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461305993
Category : Science
Languages : en
Pages : 411
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 32 (thesis year 1987) a total of 12,483 theses titles from 22 Canadian and 176 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 32 reports theses submitted in 1987, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Author:
Publisher:
ISBN:
Category : Agricultural conservation
Languages : en
Pages : 404
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Book Description
"The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes (e.g., water quality improvement), affect various aquatic and terrestrial fauna"--Abstract.
