Life Sciences Commons^™

Aspects Of Reproduction And Population Dynamics Of Bobcats In Wyoming, Douglas M. Crowe

Great Plains Wildlife Damage Control Workshop Proceedings

Distribution of the bobcat includes the 48 contiguous United States and limited occupance of southern Canada and northern Mexico. There are 11 subspecies, the one in Wyoming being Lynx rufus pallescens. Bobcats inhabit an amazing variety of habitat types, from northern boreal forests, southern swamp, and cane regions to the below sea level desert of Death Valley, California. Throughout this vast area, they utilize a wide variety of prey species. One study in Wyoming revealed at least 18 different species in the stomachs of bobcats; the cottontail rabbit being predominant. A similar study in New England revealed 20 different …

A Matter Of Understanding: An Environmental Protection Agency Film On Coyotes, F. Robert Henderson

Great Plains Wildlife Damage Control Workshop Proceedings

This movie gives facts concerning the coyote. A better understanding of other living things will determine how responsibly we make adjustments in the environment and govern the earth we share with the coyote and other creatures.

Northampton County Tidal Marsh Inventory, Kenneth A. Moore, Gene M. Silberhorn

Reports

No abstract provided.

Productivity, Mortality, And Population Trends Of Wolves In Northeastern Minnesota, L. David Mech

USGS Northern Prairie Wildlife Research Center

Population parameters, mortality causes, and mechanisms of a population decline were studied in wolves (Canis lupus lycaon) from 1968 to 1976 in the Superior National Forest. The main method was aerial radio-tracking of 129 wolves and their packmates. Due to a decline in white-tailed deer (Odocoileus virginianus), the wolf population decreased during most of the study. Average annual productivity varied from 1.5 to 3.3 pups per litter, and annual mortality rates from 7 to 65 percent. Malnutrition and intraspecific strife accounted equally for 58 percent of the mortality; human causes accounted for the remainder. As wolf …

Hypoxylon Mammatum Pathotoxin Responsible For Canker Formation In Quaking Aspen, Arthur L. Schipper, Jr.

Aspen Bibliography

No abstract provided.

Wolf-Pack Buffer Zones As Prey Reservoirs, L. David Mech

USGS Northern Prairie Wildlife Research Center

Abstract. In a declining herd, surviving deer inhabited overlapping edges of wolf- pack territories. There, wolves hunted little until desperate, in order to avoid fatal encounters with neighbors. Such encounters reduce wolf numbers and predation pressure and apparently allow surviving deer along territory edges to repopulate the area through dispersal of their prime, less vulnerable offspring into territory cores.

Accomack County Tidal Marsh Inventory, Gene M. Silberhorn, A. F. Harris

Reports

No abstract provided.

Comparison Of Coyote And Coyote × Dog Hybrid Food Habits In Southeastern Nebraska, Brian R. Mahan

University of Nebraska State Museum: Mammalogy Papers

The recent taxonomic study by Mahan et al. (1978) documented the occurrence of coyote (Canis latrans) x dog (c. familiaris) hybrids in Nebraska. This study, and those by Freeman (1976) in Oklahoma and Gipson et al. (1974) in Arkansas show coyote x dog hybrids, though not abundant, to be numerous in some areas. The purpose of the present study was to compare the stomach contents of coyote x dog hybrids collected by Mahan et al. (1978) from southeastern Nebraska with those of contemporary coyotes.

Stomachs of 12 coyote x dog hybrids and 16 coyotes collected November 1975 …

The Prairie Naturalist Vol. 9, Nos. 3 And 4. September-December, 1977

The Prairie Naturalist

UPLAND NESTING OF AMERICAN BITTERNS, MARSH HAWKS, AND SHORT-EARED OWLS ▪ H. F. Duebbert and J. T. Lokemoen

ROADSIDE NESTING BY PRAIRIE GROUSE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky

BOHEMIAN WAXWING POPULATIONS AND WINTER ECOLOGY IN NORTH DAKOTA ▪ E. L. Bakke

AGEING ARCHAEOLOGICAL BISON BY DENTAL ANNULI ▪ J. C. Pigage and M. G. McKenna

COMPARISON OF COYOTE AND COYOTE X DOG HYBRID FOOD HABITS IN SOUTHEASTERN NEBRASKA ▪ B.R. Mahan

NOTES

Abnormal Mid-May Occurrence of White-fronted Geese in Sheridan County, North Dakota ▪ D.P. Kibbe and J. A. Roppe

Common Grackle Preys on Spotted Sandpiper Chick ▪ …

Mammalian Dispersal And The Ontogeny Of Individual Behavioral Phenotypes, Marc Bekoff

Ethology Collection

Explanations of dispersal mechanisms in mammals that have stressed the importance of aggression by dominant (?) individuals as the immediate cause of the dispersal of less aggressive (more subordinate?) individuals are insufficient for explaining recent data collected on a variety of mammals. In fact, avoidance of social interaction at the time of dispersal is more characteristic of some species in which individuals emigrate. Studies that have investigated genetic correlates of dispersal in rodent populations that undergo regular cycles are few and have not provided any "causative" explanations. In various canids and rodents, behavioral interactions at the time of dispersal do …

Tree To Chips To Red Meat To Steaks, It Serves As Emergency Livestock Feed, Les Kamstra

Aspen Bibliography

We must be resourceful. Our "natural" resources are becoming scarcer every day, while waste products mushroom in dumps, along roadsides, in the water and air.

Struggle To Save Dolphins Continuing

Close Up Reports

The Humane Society of the United States has initiated a nationwide boycott of a tuna products until real progress is made in reducing the needless slaughter of porpoises in tuna nets.

In the Spring of 1976, HSUS first asked its members to refrain from buying tuna because of the high porpoise mortality and the tuna industry's unwillingness to adopt any research porpoise-saving procedures. Recently, HSUS Program Coordinator Patricia Forkan called for a nationwide boycott of tuna.

Limnological Aspects Of Lake Mead, Nevada-Arizona, John R. Baker, James E. Deacon, Thomas A. Burke, Samuel S. Egdorf, Larry J. Paulson, Richard W. Tew, Bureau Of Reclamation

Publications (WR)

Lake Mead is a deep, subtropical, moderately productive, desert impoundment with a negative heterograde oxygen profile occurring during; the summer stratification. investigations of the Boulder Basin of Lake Mead by the University of Nevada were initiated in November 1971. The primary objective of the study was to determine what effects industrial and sewage effluent from the Las Vegas metropolitan area, discharged into Las Vegas Bay, have had on the water quality and limnological conditions of Boulder Basin. Data from the 1975-76 period are presented in detail, with earlier data included in the summaries and discussions.

Measurements of water temperature, dissolved …

The Prairie Naturalist Volume 9, No. 2. June 1977

The Prairie Naturalist

PROPAGULE DISPERSAL AMONG FOREST ISLANDS IN SOUTHEASTERN SOUTH DAKOTA ▪ J. W. Ranney and W. C. Johnson

GENERAL WEATHER CONSIDERATIONS FOR THE PRESCRIDED BURNING OF PRAIRIE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky and R. W. Sands

YELLOW-CROWNED NIGHT HERONS SIGHTED IN NORTH DAKOTA ▪ D. G. Jorde, G. L. Krapu, and R. K. Green

The Limnetic Zooplankton Community Of Boulder Basin, Lake Mead In Relation To The Metalimnetic Oxygen Minimum, Thomas A. Burke

Publications (WR)

The limnetic zooplankton community of Boulder Basin, Lake Mead, was examined to determine the role of this community in the development of a metalimnetic oxygen minimum which regularly occurs in the lake. Analysis of the community from May 1975 to April 1976 revealed that zooplankton maintain high populations within the metalimnion during summer stratification. The species composition of the community changes noticeably during the summer, but due to advanced stages excysting from resting forms, a complete assemblage of individuals are found throughout the 74 day period studied. Thermal stratification was weak, covering a 30 meter metalimnion. Eddy currents powered by …

City Of Newport News And Fort Eustis Tidal Marsh Inventory, Kenneth A. Moore, Gene M. Silberhorn

Reports

No abstract provided.

The Influence Of Predator Control On Two Adjacent Wintering Deer Herds, Dennis D. Austin, Philip J. Urness, Michael L. Wolfe

Aspen Bibliography

An unknown number of deer are continually killed on summer and winter ranges by predators, and in at least some locations these losses are significant.

The Prairie Naturalist Volume 9, No. 1. March 1977

The Prairie Naturalist

NESTING BY FERRUGINOUS HAWKS AND OTHER RAPTORS ON HIGH VOLTAGE POWERLINE TOWERS ▪ D. S. Gilmer and J. M. Wiebe

ARTHROPODS CONSUMED BY AN IMMATURE MARBLED GODWIT ▪ R. M. Timm and R. M. Zink

NOTES

Black-headed Grosbeak in Jamestown, North Dakota ▪ R. Lender

Summer Record of Red-breasted Nuthatch in North Dakota ▪ R. Lender

BOOK REVIEWS

Minnesota's Wild Flowers ▪ Staff

In Search of Eagles ▪ J. Lokemoen

Forest and Range Research ▪ Staff

An Economic Analysis of Recycling ▪ Staff

Petroleum Hydrocarbons From Effluents: Detection In Marine Environment, John T. Tanacredi Ph.D.

Faculty Works: CERCOM

The marine environment has become the primary disposa ground for an increasing quantity of petroleum wastes. Mushrooming demands for petroleum products and the lack of economic incentive to recycle waste oil will increase the concentrations of detrimental petroleum hydrocarbons in the marine environment

Although a continuous, low-level discharge of waste petroleum hydrocarbons into the marine environment may not be as dramatic as a major oil spill, the consequences could be more devastating over an extended period. As noted by Blumer, earlier interpretations of the environmental effects of oil must not be reevaluated in the light of recent evidence of its …

Dickey-Lincoln School Lakes Project Environmental Impact Statement : Appendix G: Recreation Resources, Northern Maine Regional Planning Commission, Land Use Consultants, Inc., New England Division, U.S. Army Corps Of Engineers

Dickey-Lincoln School Lakes Project

This report is to evaluate and describe the existing recreational use and resources of the project area and the encompassing study area and to project the future use of those resources both with and without the Dickey-Lincoln School Lakes Project. The primary impact area of the proposed project (project area) includes the St. John River watershed upstream of the proposed damsites to the confluence of Nine-mile Brook. The area is bounded by the watershed divide with the Allagash River on the east and the Canadian Border on the west.

Visual Detection Of Cryptic Prey By Blue Jays (Cyanocitta Cristata), Alexandra T. Pietrewicz, Alan Kamil

Avian Cognition Papers

Blue jays learned to respond differentially to the presence or absence of Catocala moths in slides. This detection of the moths by the jays was affected by the background upon which the moth was placed and its body orientation, thus providing an objective measure of crypticity. These procedures are useful for the study of visual detection of prey.

Aspects Of The Ecology Of Fish And Commercial Crustaceans Of The Blackwood River Estuary, Western Australia, R.C. J. Lenanton

Fisheries research bulletins

Beach seine nets, set or mesh nets, otter trawls and plankton nets were used to sample fish and commercial crustaceans every two months over the period March 1974 to March 1975, and again in July 1975 at a number of stations throughout the Blackwood River estuary, Western Australia.

Live Trap Preference Among Grassland Mammals, Robert K. Rose, Norman A. Slade, James H. Honacki

Biological Sciences Faculty Publications

In two independent studies, small mammals of grassland communities in eastern Kansas, when given a choice, preferred Fitch to Sherman live traps. Except for the harvest mice in the demographic study, the type of preferred trap and magnitude of selection was remarkably comparable, with microtines showing slight, and cricetines strong, preferences overall. The merits of each type of trap are compared, and related to season, weather, prior experience, and trap-associated mortality.

Biomass Estimation For Some Shrubs From Northeastern Minnesota, David F. Grigal, Lewis F. Ohmann

Aspen Bibliography

Biomass prediction equations were developed for 23 northeastern Minnesota shrub species. The allometric function was used to predict leaf, current annual woody twig, stem, and total woody biomass (dry grams), using stem diameter class estimated to the nearest 0.25 cm class at 15 cm above ground level as the independent variable.

Jack Pine And Aspen Forest Floors In Northeastern Minnesota, Robert M. Loomis

Aspen Bibliography

Characteristics of upland forest floors under mature jack pine and aspen in northeastern Minnesota were investigated.

Some Individual Plant Biomass Values From Northeastern Minnesota, Lewis F. Ohmann, David F. Grigal

Aspen Bibliography

No abstract provided.

Vegetation And Environmental Features Of Forest And Range Ecosystems, George A. Garrison, Ardell J. Bjugstad, Don A. Duncan, Mont E. Lewis, Dixie R. Smith

Aspen Bibliography

This is one of the reports developed as part of the Forest-Range Environmental Study (FRES) of the Forest Service, U.S. Department of Agriculture. This report presents descriptive sketches of 34 soil-vegetation units, called ecosystems. These cover all the land area of the 48 contiguous States.

Natural Regeneration Of Northern Hardwoods In The Northern Great Lakes Region, Carl H. Tubbs

Aspen Bibliography

The forest types collectively known as "northern hardwoods" (Quigley and Babcock 1969) occupy nearly 100 million acres in eastern North America.

Forest Insect And Disease Management : Aspen Mortality At The Maroon Lake Campground, David W. Johnson, Thomas E. Hinds

Aspen Bibliography

At the request of the White River National Forest, Dave Johnson, Plant Pathologist, FI&DM and Tom Hinds, Plant Pathologist, RMFRES, made an evaluation of aspen mortality in the Maroon Lake Campground, Aspen Ranger District during June 13 to 15, 1977. Previously, Hinds (1976) reported accelerated aspen loss in 17 campgrounds, including Maroon Lake, located throughout Colorado and New Mexico (Fig. 1).

Aspen Mortality At The Maroon Lake Campground, Aspen Ranger District, White River National Forest, David W. Johnson, Thomas E. Hinds, G.L. Downing, F.A. Dorrell

Aspen Bibliography

No abstract provided.