
audiobook
by Louis Daniel Frenzel, P. D. Karns, L. David Mech, Robert R. Ream, John W. Winship
FOREWORD
ECOLOGICAL STUDIES OF THE TIMBER WOLF IN NORTHEASTERN MINNESOTA
MOVEMENTS, BEHAVIOR, AND ECOLOGY OF TIMBER WOLVES IN NORTHEASTERN MINNESOTA
AN ANALYSIS OF THE AGE, SEX, AND CONDITION OF DEER KILLED BY WOLVES IN NORTHEASTERN MINNESOTA
THE EFFECT OF SNOW CONDITIONS ON THE VULNERABILITY OF WHITE-TAILED DEER TO WOLF PREDATION
THE POSSIBLE OCCURRENCE OF THE GREAT PLAINS WOLF IN NORTHEASTERN MINNESOTA
SOME RECENT RESEARCH PAPERS OF THE NORTH CENTRAL FOREST EXPERIMENT STATION
In the remote reaches of Minnesota’s Superior National Forest, a remarkable community of timber wolves persists—the largest on the lower 48 states. This work brings those elusive predators into focus, detailing how they navigate a landscape of lakes, swamps, and rugged ridges where winter can plunge below –30 °F and snow piles up to three feet deep. The authors set the stage by describing the wolves’ subspecies, their historical range, and the pressing need to understand their role in a forest ecosystem that is increasingly managed for conservation.
Drawing on nearly two hundred days of field observation between 1964 and 1969, the study tracks wolf movements, pack dynamics, hunting tactics, and seasonal activity patterns. Researchers combined direct tracking, radio telemetry, and careful notes on the surrounding vegetation—jack pine, spruce, birch, and aspen—to reveal how the wolves use the mosaic of forest and water. Early findings highlight the wolves’ adaptability to harsh winters and their influence on prey populations.
These insights lay a foundation for forest managers, offering a scientific basis for protecting wolf habitat while balancing other land‑use goals. The book serves as both a detailed record of pioneering fieldwork and a call to integrate wildlife ecology into broader forest stewardship.
Language
en
Duration
~2 hours (168K characters)
Series
USDA Forest Service Research Paper NC-52
Publisher of text edition
Project Gutenberg
Credits
Produced by Chris Curnow, Joseph Cooper, Diane Monico, and the Online Distributed Proofreading Team at https://www.pgdp.net
Release date
2011-10-02
Rights
Public domain in the USA.

Known for making electronics and communications technology easy to understand, this longtime engineer and teacher wrote dozens of practical books and articles for students, hobbyists, and working technicians. His work helped generations of readers learn how modern electronic systems really work.
View all booksKnown through classic wildlife research rather than a large popular bibliography, this writer helped document the ecology of wolves and deer in Minnesota. The surviving record points to a practical scientific voice shaped by fieldwork and collaboration.
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A lifelong wolf researcher, this wildlife biologist has spent decades watching how wolves really live in places from Minnesota to Yellowstone and the High Arctic. His work helped shape modern understanding of wolf behavior, ecology, and conservation.
View all booksA field biologist and coauthor of a classic wolf study, this writer helped document the lives of timber wolves in northeastern Minnesota with careful, ground-level observation. His work remains closely tied to wildlife ecology and the long-form research tradition of the U.S. Forest Service.
View all booksKnown today mainly through a classic Project Gutenberg title, this little-documented coauthor helped shape an early scientific study of timber wolves in northeastern Minnesota. The surviving record is slim, which gives the work a bit of historical mystery.
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