Life Sciences Commons^™

The Ecology Of Native Grassland Macroinvertebrates And Feeding Ecology Of Sandhill Cranes, Craig A. Davis, Paul A. Vohs

Proceedings of the North American Crane Workshop

The ecology of native grassland macroinvertebrates along the Platte River in central Nebraska and their role in the feeding ecology of sandhill cranes (Grus canadensis) was examined on 3 native grasslands along the Platte River during late winter-early spring, 1989 and 1990. Four hundred forty-four soil samples from the study area were sorted for macroinvertebrates. Environmental factors such as soil moisture, water table depth, soil texture, and plant species composition were recorded from each soil collection site. Fifteen sandhill cranes, observed feeding for 40 minutes, were collected from 1 of the study areas. Maeroinvertebrates were collected from 4 …

Contaminant Residues In Sandhill Cranes Killed Upon Striking Powerlines In Central Nebraska, Timothy E. Fannin

Proceedings of the North American Crane Workshop

In 1989 and 1990, 58 sandhill cranes (Grus canadensis) were collected along the central Platte River in Nebraska during a study of mortality caused by powerline impact. Brains were assayed for acetylcholinesterase activity; gut contents were analyzed for residues of 25 organophosphate and 6 carbamate compounds; and livers were analyzed for 20 inorganics (including lead, mercury, and boron) and 22 organochlorine chemicals. Brain acetylcholinesterase activities appeared to be within normal ranges, and no measurable organophosphate or carbamate residues were found in the gut contents of 5 birds with the lowest brain enzyme activities. Heptachlor epoxide, oxychlordane. p,p' -DDE, …

Distribution Of Sandhill Cranes In The North Platte River Valley: 1980 And 1989, Martin J. Folk, Thomas C. Tacha

Proceedings of the North American Crane Workshop

We observed the abundance, diurnal distribution, and habitat use of sandhill cranes (Grus canadensis) in the North Platte River Valley (NPRV) in 1989 for comparisons to similar data from 1979 to 1980. Sandhill cranes traveled farther from nocturnal roosts to diurnal feeding sites and use of the NPRV was lower in 1989 as compared to 1979~80. Presence of cranes in corn stubble and pasture increased from 1980 to 1989, while presence in alfalfa and palustrine wetlands decreased. Plowing of corn stubble fields and drought conditions in 1989 may have influenced crane distribution, abundance, and habitat use.

Temporal Patterns Of Sandhill Crane Roost Site Use In The Platte River, Bradley S. Norling, Stanley H. Anderson, Wayne A. Hubert

Proceedings of the North American Crane Workshop

Temporal patterns of daily arrival and departure of sandhill cranes (Grus canadensis) at roost sites were examined along the Platte River in Nebraska during spring 1990. Departure times were earliest and arrival times were latest during the beginning of the 8taging season (9-21 March). Date within the staging season was the primary variable associated with time of initial departure and arrival, but arrival and departure times were also influenced by climatic factors. Departure times correlated positively with fog and precipitation (P < 0.05) and negatively with air temperature (P < 0.05), whereas arrival times correlated positively with both cloud cover and air temperature (P < 0.05).

Nf92-79 Equipment Rental Rates In Nebraska Panhandle, Thomas L. Holman

University of Nebraska-Lincoln Extension: Historical Materials

Increasing financial pressure on area farmers and ranchers has made ownership of some farm equipment and implements uneconomical. Producer and implement dealer inquiries have generated the interest in this subject.

G92-1099 Estimating Effective Rainfall, Joel E. Cahoon, C. Dean Yonts, Steven R. Melvin

University of Nebraska-Lincoln Extension: Historical Materials

How irrigators can estimate effective rainfall, and use that estimate to schedule irrigations properly. Scheduling irrigation based on crop demand (see NebGuide G85-753 Irrigation Scheduling Using Crop Water Use Data, on the checkbook method) requires an estimate of effective precipitation or rainfall. Effective rainfall estimates are also important for planning cropping sequences in both dryland and irrigationd crop production. Effective rainfall is the amount of rainfall stored in the crop root zone. Rainfall that runs off the soil surface or passes through the root zone does not contribute to crop growth and yield. There are two steps to estimating effective …

G92-1080 Farmstead Safety Evaluation Guide, Gerald R. Bodman

University of Nebraska-Lincoln Extension: Historical Materials

Safe working conditions for personnel and safe, healthful living conditions for animals are critical requirements in the design of all farmsteads.

All farmsteads periodically should be evaluated for potential hazards and conditions that could lead to injury, death, or premature building failure or loss. Some hazards develop with time and are easily overlooked. Others are the result of poor planning or just being "too busy." To assess the safety of your farmstead and buildings, answer the following questions. Any question that cannot be answered with a firm "yes" indicates a need for corrective action.

G92-1109 Musk Thistle, Robert Wilson, Fred Roeth, Alex Martin

University of Nebraska-Lincoln Extension: Historical Materials

The history, identification and chemical, mechanical and cultural control of musk thistle are discussed. Musk thistle is a major problem for many Midwestern landowners. It reduces forage yields by robbing moisture and plant food from palatable grasses. Livestock refuse to enter heavily infested areas and will not graze close to the spiny plants. Since its emergence as a serious weed problem in the late 1940s, musk thistle has invaded thousands of acres of Nebraska pastureland and even occurs in some cultivated fields. It has moved from the Kansas border to the South Dakota border and as far west as Colorado …

Ec92-107 Nebraska Proso, Sunflower And Amaranth Variety Tests, 1992, David D. Baltensperger, Glen E. Frickel, Mark Swanson, Robert N. Klein, James Krall, Randy Anderson, Daryl Ellis, Drew J. Lyon

University of Nebraska-Lincoln Extension: Historical Materials

This circular is a progress report of proso, sunflower, and amaranth variety trials conducted in cooperation with the Panhandle Research and Extension Center, Scottsbluff, Nebraska. Conduct of the experiments and publication of results is a joint effort of the UNL Agricultural Research Division and the Cooperative Extension Service.

Rp92-445 Marketing Crafts And Other Products To Tourists, Sherri Gahring, Shirley Niemeyer, Rae Reilly, Janeann Stout

University of Nebraska-Lincoln Extension: Historical Materials

The travel and tourism industry is the third largest employer in the United States, supporting over 5.85 million travel-related jobs. Foreign and domestic visitors traveling in the United States generate over $327 billion in tourism revenues in a year, making travel and tourism the third largest retail sales industry.

If you target the tourist market, what types of products appeal to people who take part in different tourist activities? Are handcrafted items of interest to tourists? How can you improve existing marketing strategies?

To find answers to these questions, a research team from Iowa, Minnesota, and Nebraska gathered information from …

Nf92-106 Reference Material For Commercial Vegetable Producers And Extension Agents, Laurie Hodges

University of Nebraska-Lincoln Extension: Historical Materials

This NebFact gives you information on reference material for commercial vegetable producers and Extension Agents.

Nf92-105 Sources Of Information On Herb Production And Marketing, Laurie Hodges

University of Nebraska-Lincoln Extension: Historical Materials

This NebFact gives you information on herb production and marketing sources.