Life Sciences Commons^™

Daphnia Lumholtzi, An Exotic Zooplankton, Invading A Nebraska Reservoir, Brian C. Peterson, Nicolas J. Fryda, Keith D. Koupal, Wyatt Hoback

The Prairie Naturalist

A limnological assessment project by the University of Nebraska at Kearney and the Nebraska Game and Parks Commission collected weekly vertical zooplankton tows during May through September 2002 at Harlan County Reservoir in Nebraska. Beginning on 5 August 2002, the exotic Daphnia lumholtzi (Cladocera: Daphniidae) appeared at a density of 0.04 1.1 in one of fifteen standardized sampling stations. By 6 September 2002, D. lumholtzi was found in all fifteen stations at an average density of 2.17 ± 3.10 1.1 with a site maximum density of 11.43 1.1 • Length measurements of D. lumholtzi ranged from 0.80 mm to 5.66 …

Recent Records Of Formerly Extirpated Carnivores In Nebraska, Justin D. Hoffman, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

By the early 1900's, several large carnivores had been extirpated from Nebraska as a result of unrestricted hunting and trapping by early European settlers. Recently, there have been several confirmed records of carnivores that were once extirpated from Nebraska. In our study, we present new data for five species that recently were documented in Nebraska: Lynx canadensis, Ursus americanus, Canis lupus, Puma concolor, and Lontra canadensis. Restoration programs and legal protection afforded to these species in Nebraska and in adjacent states have allowed population numbers to increase. Because of the increase in populations of these …

Contaminant Exposure And Reproductive Health Of Sandhill Cranes In The Central Platte River Valley, Nebraska., Matthew S. Schwarz, Christina D. Lydick, Karen J. Nelson, Timothy S. Gross

United States Fish and Wildlife: Staff Publications

The central Platte River Valley provides crucial staging habitat for the endangered whooping crane (Grus americana) and the mid-continent population of sandhill cranes (Grus canadensis). Platte River flow depletions and the conversion of native wet meadows for agriculture and other purposes has decreased the cranes natural habitat in the central Platte River Valley, and waste corn now makes up most of the cranes diet while they are in the Valley.

The purpose of this research was to measure organochlorine, elemental contaminant, and pesticide exposure to sandhill cranes from the central Platte River Valley, and to evaluate their reproductive condition. Pesticides …

G05-1557 Planning Your Riparian Buffer: Design And Plant Selection, Amanda Fox, Thomas G. Franti, Scott J. Josiah, Mike Kucera

University of Nebraska-Lincoln Extension: Historical Materials

Learn how to plan and design a riparian buffer and select appropriate tree and grass species.

Conservation buffers are planted for environmental, aesthetic, recreational, and economic reasons. Grass filter strips, grassed waterways, field borders, and field windbreaks are examples of conservation buffers. A conservation buffer also may be a streamside or riparian forest buffer and include trees, shrubs, and grasses. Riparian buffers are a best management practice to protect stream water quality, reduce streambank erosion, and provide wildlife habitat. Buffers also can provide income through payments from federal, state and local cost-share programs or through production and sale of specialty …

Nf05-653 Pyemotes Itch Mites, James A. Kalisch, David L. Keith, Alberto R. Broce

University of Nebraska-Lincoln Extension: Historical Materials

Two North American Species of itch mites — the straw itch mite and the "oak leaf gall mite" (Family Pyemotidae) — are found in Nebraska and Kansas. The straw itch mite was known in the early 1900s as a nuisance pest after farm workers handled small grains. Wheat, oats, and barley were often infested with insects on which the itch mites fed, allowing them to reach large numbers by harvest. The oak leaf gall mite recently discovered in galls on pin oaks in Lincoln, Neb., and Manhattan, Kan., is believed to be a relatively recent introduction to the United States. …

Nf05-652 Soybean Rust Fungicide Use Guidelines For Nebraska, Loren J. Giesler, John A. Wilson, Jennifer M. Rees

University of Nebraska-Lincoln Extension: Historical Materials

While the impact that soybean rust will have on Nebraska's soybean crop is unknown, producers should be prepared to manage the disease. When soybean rust occurs or is expected to occur shortly in Nebraska, growers can use the decision-aid flow chart on page 2 of this NebFact to determine whether to treat and, if treating, which class of fungicide (chlorothalonil, strobilurin, or triazole) to use.

Ec05-130 Guide For Weed Management In Nebraska, Roch E. Gaussoin, Brady F. Kappler, Robert N. Klein, Stevan Z. Knezevic, Drew J. Lyon, Alex Martin, Fred Roeth, Gail A. Wicks, Robert G. Wilson, Robert A. Masters, Patrick J. Shea, Larry D. Schulze

University of Nebraska-Lincoln Extension: Historical Materials

One of the major thrusts of all University of Nebraska weed science faculty is the Guide for Weed Management in Nebraska. This guide is not just the work of one or two people, rather it is a joint effort of all the authors to produce a comprehensive, information-packed resource. Each weed science faculty member is responsible for particular sections of the guide. The process of reviewing the current content, checking labels and research data and updating the content can be an extensive process. Each year new herbicide active ingredients and trade names are introduced and figuring out what a herbicide …

G05-1551 Multiple-Year Droughts In Nebraska, Michael Hayes, Cody Knutson, Q. Steven Hu

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide discusses the history and impact of drought in Nebraska.

Most people understand that droughts have had a major impact on Nebraska in the past. Yet, many Nebraskans continue to be surprised when drought occurs. It is important to remember that droughts, including multiple-year droughts, are a normal part of Nebraska’s climate. This NebGuide discusses the history of drought in Nebraska, and aims to help Nebraskans better understand the range of climatic variability when they plan for drought.

Ec05-185 Grazing Winter Wheat In Nebraska, Tom Holman, Drew J. Lyon, David D. Baltensperger, Ivan G. Rush, Ray Weed

University of Nebraska-Lincoln Extension: Historical Materials

Grazing cattle on winter wheat, often prior to grain harvest, is common throughout the southern Great Plains. Grazing generates about $50 million in income for Texas wheat producers and reduces the risk of growing wheat by providing a substantial income source other than grain. Benefits can be realized by grazing prior to the primary environmental risk period for drought, heat stress, and hail, all of which frequently reduce grain yield while having limited impact on forage production. Cattle also are grazed on winter wheat fields in western Nebraska and the surrounding region. Typically in Nebraska, fall forage would be used …