Natural Resources and Conservation Commons^™

Windbreak Shelter As A Function Of Wind Direction, James R. Brandle

School of Natural Resources: Faculty Publications

No abstract provided.

Virgilian (Upper Pennsylvanian) Paleosols In The Upper Lawrence Formation (Douglas Group) And In The Snyderville Shale Member (Shawnee Group, Oread Formation) Of The Northern Midcontinent, U.S.A.: Pedologic Contrasts In A Cyclothem Sequence, R.M. Joeckel

School of Natural Resources: Faculty Publications

No abstract provided.

Rangeland Reference Areas : Summary Of Cooperative Project Between The Western Australian Department Of Agriculture And The Environmental Protection Authority, D A. Blood

Resource management technical reports

The development of agriculture in south-western Australia has been characterised by the replacement of deep-rooted, perennial species of native vegetation with shallow-rooted, annual species. Except for the high rainfall areas, the native vegetation was able to intercept and transpire nearly all of the rainfall resulting in low stream flows and recharge to a groundwater system which was typically deep and restricted to the major valleys. The lack of surface or groundwater movement out of inland catchments used large quantities of cyclic salts to become stored in the regolith. Although annual crops and pastures can be high water users, they are …

Proceedings Of The Symposium Planning For A Sustainable Future: The Case Of The North American Great Plains, D. A. Wilhite, D. A. Wood, K. H. Smith

School of Natural Resources: Faculty Publications

No abstract provided.

Reading The Rangeland: A Guide To The Arid Shrublands Of Western Australia, Don Burnside, Alec Holm, Alan Payne, Georgina Wilson

All other publications

Managing the rangelands is complex. Soils and vegetation can vary considerably over short distances in distinct or subtle ways. Separating climatic from management influences on the condition of the land has always been difficult. Whether we live on a sheep station, in a country town, in an Aboriginal community, a mining camp, or even if we only visit the Australian outback, it is vital that we understand and appreciate the unique character and management requirements of the rangelands. Learning to ‘read the rangeland’ has been a slow process, involving the knowledge and skills of pastoralists, Aboriginal people and scientists. This …

Final Report: Oglala National Grasslands Badlands Vegetational Survey, Joyce Hardy

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

These surveys were taken to document the vegetational species in the Ogalala National Grasslands A total of 637 plant collections were made. Collections were made under Hardy’s number when possible. Identifications were completed by Hardy, with assistance by Ron Weedon, Steve Rolfsmeier, and Stan Welsch. Identifications were made using the Flora of the Great Plains, and synonym follows the same source. These collections represent 233 taxonomic entities, including 41 families, 227 separate species, one known hybrid, and six subspecific pairs. Four of these collections are new to the state of Nebraska and 44 are newly collected for the county of …

Influence Of Vegetated Wetlands On The Water Quality Of Two Glacial Prairie Lakes, Lois Haertel, Walter G. Duffy, Daniel E. Kokesh

Journal of the Minnesota Academy of Science

We investigated the influence of vegetated wetlands on water quality of two eastern South Dakota glacial prairie lakes. Surface water from a 5,880 ha pastured basin drains into a 90 ha upstream Typha wetland and enters Lake Enemy Swim passing 400 m through Typha-Scirpus littoral wetland. A second 1,290 ha basin characterized by row crops and pasture drains into a 260 ha open water slough entering L. Enemy Swim adjacent to Typha-Scirpus littoral wetland. Water enters Lake Cochrane from two smaller drainage basins. Water from a 180 ha basin consisting of a pasture and wet meadow enters the lake after …

The Role Of Economic, Management And Public Policy Factors On Post-Contract Conservation Reserve Program Land Use Decisions, Larry L. Janssen, Tecleberhan Ghebremicael

Journal of the Minnesota Academy of Science

Most Conservation Reserve Program (CRP) contracts will expire from 1996 to 2001 , directly affecting land use of 36.4 million acres of highly erodible cropland enrolled in this land retirement program. The major objective of this study is to estimate the role of economic, management, and public policy factors on post-contract CRP land use decisions in South Dakota, a Northern Plains state with 2.1 million acres of enrolled land, 10% of the State's cropland base.

The major data source is a 1993 CRP survey sent to a random sample of 8.33 %of South Dakota CRP contract holders and completed by …

Avian Use Of Riparian Corridors And Adjacent Cropland In East-Central Nebraska, Rebecca L. Fitzmaurice

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Bioenergetics Of Walleye In Lake Oahe, South Dakota, Scott D. Bryan

Electronic Theses and Dissertations

The food habits, caloric density, and population dynamics of walleye Stizostedion vitreum were determined in 1993 and 1994 and combined with information on energetics and growth to determine the trophic interactions of walleyes in Lake Oahe, South Dakota. Monofilament gill nets were set at three depths in the water column (bottom, suspended, and surface) from May through September, 1994 to determine the effect of gill net placement on catch rates of walleyes. Catch per unit effort of walleyes was greater in bottom nets during July (5.2/net-h) than any other month or net location. In addition, 25- and 38-mm mesh sizes …