Isle Royale is a remote wilderness island, isolated by the frigid waters of Lake Superior, and home to populations of wolves and moose. As predator and prey, their lives and deaths are linked in a drama that is timeless and historic. Their lives are historic because we have been documenting their lives for more than five decades. This research project is the longest continuous study of any predator-prey system in the world.

Access the growing collection of Michigan Tech publications produced from this study below.

Follow


Annual Reports from 2021

Ecological Studies of Wolves on Isle Royale Annual Report 2020-2021, John A. Vucetich, Rolf O. Peterson, and Sarah R. Hoy

Works from 2019

Link

Genetics and extinction and the example of Isle Royale wolves, P. W. Hendrick, J. A. Robinson, Rolf O. Peterson, and John A. Vucetich

Link

Negative frequency‐dependent foraging behaviour in a generalist herbivore (Alces alces) and its stabilizing influence on food web dynamics, Sarah Hoy, John A. Vucetich, Rongsong Liu, Don DeAngelis, Rolf O. Peterson, Leah Vucetich, and John J. Henderson

PDF

Detecting dynamic system regime boundaries with Fisher information: the case of ecosystems, Eva Konig, Heriberto Cabezas, and Audrey L. Mayer

PDF

Genomic signatures of extensive inbreeding in Isle Royale wolves, a population on the threshold of extinction, Jacqueline A. Robinson, Jannikke Raikkonen, Leah Vucetich, John A. Vucetich, Rolf O. Peterson, Kirk Lohmueller, and Robert Wayne

Link

Aquatic macrophytes are seasonally important dietary resources for moose, Keren B. Tischler, William J. Severud, Rolf O. Peterson, and Joseph K. Bump

Theses/Dissertations/Reports from 2018

PDF

THE DYNAMIC NATURE OF FORAGE PREFERENCE AND MICROHISTOLOGICAL ATLAS, John J. Henderson

PDF

ECOLOGICAL IMPLICATIONS OF FORAGING AND LIFE-HISTORY IN THREE COLD-ADAPTED SPECIES, Andrew Von Duyke

Theses/Dissertations/Reports from 2017

PDF

An Investigation of Historic Landscape Occupation, Transformation, and Interpretation at Windigo, Isle Royale National Park, Marley Chynoweth

Link

Genomic variation of inbreeding and ancestry in the remaining two Isle Royale wolves, Philip W. Hedrick, Marty Kardos, Rolf O. Peterson, and John A. Vucetich

Link

How the Rock Connects Us: A Geoheritage Guide to Michigan's Keweenaw Peninsula and Isle Royale, William I. Rose, Erika Vye, and Valerie Martin

Theses/Dissertations/Reports from 2016

PDF

Early Copper Smelting In the Lake Superior Region:A Case Study of the Isle Royale and Ohio Mining Company, 1846-1852, Adrian Blake

Reports/Theses/Dissertations from 2015

PDF

THE INFLUENCE OF DIET COMPOSITION, PLANT DEFENSIVE CHEMICALS, AND WINTER SEVERITY ON THE NUTRITIONAL CONDITION OF A FREERANGING, GENERALIST HERBIVORE, Grace L. Parikh

Works from 2014

Link

Genetic rescue in Isle Royale wolves: genetic analysis and the collapse of the population, Philip W. Hedrick, Rolf O. Peterson, Leah M. Vucetich, Jennifer R. Adams, and John A. Vucetich

Link

Where wolves kill moose: The influence of prey life history dynamics on the landscape ecology of predation, Robert A. Montgomery, John A. Vucetich, Gary J. Roloff, Joseph K. Bump, and Rolf O. Peterson

Link

Trophic cascades in a multicausal world: Isle Royale and Yellowstone, Rolf O. Peterson, John A. Vucetich, Joseph M. Bump, and Douglas W. Smith

Works from 2013

Link

The influence of winter severity, predation and senescence on moose habitat use, Robert A. Montgomery, John A. Vucetich, Rolf O. Peterson, Gary J. Roloff, and Kelly F. Millenbah

PDF

Spatial and temporal patterns in ungulate-ecosystem interactions, Bryan D. Murray

Works from 2012

Link

Evaluating the efficacy of non-invasive genetic methods and estimating wolf survival during a ten-year period, F. Marucco, L. M. Vucetich, R. O. Peterson, J. R. Adams, and J. A. Vucetich

PDF

Landscape and forest structure at moose mortality sites on Isle Royale National Park. A LiDAR based assessment, Luis Miguel Verissimo

Works from 2011

Link

Genomic sweep and potential genetic rescue during limiting environmental conditions in an isolated wolf population, Jennifer R. Adams, Leah M. Vucetich, Philip W. Hedrick, Rolf O. Peterson, and John A. Vucetich

PDF

Compensatory growth in moose and its relationship to sex, longevity, intraspecific competition, and senescence, Benjamin W. Betterly

Link

Exploring the ethical basis for conservation policy: The case of inbred wolves on Isle Royale, USA, Meredith L. Gore, Michael P. Nelson, John A. Vucetich, Amy M. Smith, and Melissa A. Clark

Link

The Isle Royale Wolf-Moose Project (1958-present) and the Wonder of Long-Term Ecological Research, Michael P. Nelson, John A. Vucetich, Rolf O. Peterson, and Leah M. Vucetich

Link

Predicting prey population dynamics from kill rate, predation rate and predator-prey ratios in three wolf-ungulate systems, John A. Vucetich, Mark Hebblewhite, Douglas W. Smith, and Rolf O. Peterson

Works from 2010

Link

Swimming Wolves, Canis lupus, attack a swimming Moose, Alces alces, P. A. Jordan, R. O. Peterson, and K. A. Ledoux

Works from 2009

Link

Wolf population changes in Michigan, Dean E. Beyer, Rolf O. Peterson, John A. Vucetich, and James H. Hammill

Link

Wolves modulate soil nutrient heterogeneity and foliar nitrogen by configuring the distribution of ungulate carcasses, Joseph K. Bump, Rolf O. Peterson, and John A. Vucetich

Link

Large herbivores and aquatic-terrestrial links in southern boreal forests, Joseph K. Bump, Keren B. Tischler, Amy J. Schrank, Rolf O. Peterson, and John A. Vucetich

Link

Congenital bone deformities and the inbred wolves (Canis lupus) of Isle Royale, Jannikke Räikkönen, John A. Vucetich, Rolf O. Peterson, and Michael P. Nelson

Link

Mercury, lead and lead isotope ratios in the teeth of moose (Alces alces) from Isle Royale, U.S. upper midwest, from 1952 to 2002, John A. Vucetich, P. M. Outridge, Rolf O. Peterson, Rune Eide, and Rolf Isrenn

Link

Wolf and moose dynamics on Isle Royale, John A. Vucetich and Rolf O. Peterson

Works from 2008

Link

Nearshore habitat and fish community associations of coaster brook trout in Isle Royale, Lake Superior, Owen T. Gorman, Seth A. Moore, Andrew J. Carlson, and Henry R. Quinlan

Works from 2007

Link

Carnivore-specific stable isotope variables and variation in the foraging ecology of modern and ancient wolf populations: Case studies from Isle Royale, Minnesota, and La Brea, K. Fox-Dobbs, J. K. Bump, R. O. Peterson, D. L. Fox, and P. L. Koch

Works from 2006

Link

Predator disease out-break modulates top-down, bottom-up and climatic effects on herbivore population dynamics, Christopher C. Wilmers, Eric Post, Rolf O. Peterson, and John A. Vucetich

Works from 2005

Link

The wolves of Isle Royale display scale-invariant satiation and ratio-dependent predation on moose, Christian Jost, Gregory Devulder, John A. Vucetich, Rolf O. Peterson, and Roger Arditi

Works from 2004

Link

Wolf homesite attendance patterns, Marcel J. Potvin, Rolf O. Peterson, and John A. Vucetich

Link

The influence of top-down, bottom-up and abiotic factors on the moose (Alces alces) population of Isle Royale, John A. Vucetich and Rolf O. Peterson

Works from 2003

Link

Yellowstone after wolves, Douglas W. Smith, Rolf O. Peterson, and Douglas B. Houston

Link

Genetic variation and population structure of moose (Alces alces) at neutral and functional DNA loci, Paul J. Wilson, Sonya Grewal, Art Rodgers, Rob Rempel, Jacques Saquet, Hank Hristienko, Frank Burrows, Rolf Peterson, and Bradley N. White

Works from 2002

Link

Snowmobile activity and glucocorticoid stress responses in wolves and elk, Scott Creel, Jennifer E. Fox, Amanda Hardy, Jennifer Sands, Bob Garrott, and Rolf O. Peterson

Link

Compensatory bone remodelling in moose: A study of age, sex, and cross-sectional cortical bone dimensions in moose at Isle Royale National Park, Mary Hindelang, Rolf O. Peterson, and Ann L. Maclean

Link

Phase dependence and population cycles in a large-mammal predator-prey system, Eric Post, Nils Chr Stenseth, Rolf O. Peterson, John A. Vucetich, and Alicia M. Ellis

Works from 2001

Link

Mercury concentrations in deer mouse (Peromyscus maniculatus) tissues from Isle Royale National Park, L. M. Vucetich, J. A. Vucetich, L. B. Cleckner, P. R. Gorski, and R. O. Peterson

Works from 1999

Link

Predicting the wolf-prey equilibrium point, L. L. Eberhardt and R. O. Peterson

Link

Wolf-moose interaction on Isle Royale: The end of natural regulation, Rolf O. Peterson

Link

Ecosystem consequences of wolf behavioral response to climate, Eric Post, Rolf O. Peterson, Nils Chr Stenseth, and Brian E. McLaren

Works from 1998

Link

Evaluation of age determination techniques for gray wolves, David B. Landon, Carol A. Waite, Rolf O. Peterson, and L. David Mech

Link

Population limitation and the wolves of Isle Royale, Rolf O. Peterson, Nancy J. Thomas, Joanne M. Thurber, John A. Vucetich, and Thomas A. Waite

Works from 1997

Link

Trends of winter nutritional restriction, ticks, and numbers of moose on Isle Royale, Glenn D. DelGiudice, Rolf O. Peterson, and William M. Samuel

Link

Bone Density Determination of Moose Skeletal Remains from Isle Royale National Park using Digital Image Enhancement and Quantitative Computed Tomography (QCT), Mary Hindelang and Ann L. Maclean

Works from 1996

Link

Osteoporotic Skull Lesions in Moose at Isle Royale National Park, Mary Hindelang and Rolf O. Peterson

Link

Plant-specific response to herbivory: Simulated browsing of suppressed Balsam fir on Isle Royale, Brian E. Mclaren

Link

Seedbed and canopy cover effects on balsam fir seedling establishment in Isle Royale National Park, Brian E. McLaren and Robert A. Janke

Works from 1995

Link

Nitrogen mineralization in boreal forest stands of isle royale, Northern Michigan, R. Stottlemyer, B. Travis, and D. Toczydlowski

Works from 1994

Link

Wolves, moose, and tree rings on Isle Royale, B. E. McLaren and R. O. Peterson

Works from 1990

Link

Moose teeth as monitors of environmental isotopic parameters, J. L. Bada, R. O. Peterson, A. Schimmelmann, and R. E.M. Hedges

Works from 1988

Link

Increased osteoarthritis in moose from Isle Royale., R. O. Peterson

Link

The rise and fall of Isle Royale wolves, 1975-1986, R. O. Peterson and R. E. Page

Works from 1986

Link

Mineral licks as a sodium source for Isle Royale moose, K. L. Risenhoover and R. O. Peterson

Works from 1984

Link

Wolves, moose, and the allometry of population cycles, R. O. Peterson, R. E. Page, and K. M. Dodge

Link

Wolf‐avoidance strategies of moose, Philip W. Stephens and Rolf O. Peterson