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Students, wildlife experts team up for high-tech cougar study
Posted May 2001

Summary
In the growing eastern Cascades community of Cle Elum, where new development is pushing into wildlife habitat, the Washington Department of Fish and Wildlife (WDFW) is teaming up with experts from a noted carnivore research institute and teachers and students in the local school district in an unusual cougar research project. The Cougars and Teaching (CAT) project calls for precisely monitoring the movements of up to 30 cougars over an eight-year-period, while involving students in real-life science lessons including field observation, data collection and mapping. Through the use of advance technology, including Global Positioning Satellite collars placed on the cougars, scientists will get a clearer picture of how the animals respond when faced with encroaching human development. The new insights are expected to help in addressing statewide questions and concerns on cougar-human interactions. Eventually, the study could be replicated in other developing suburban and rural areas of the state.


By Gary Koehler, WDFW Wildlife Research Scientist
WDFW Wildlife Program
and Margaret Tudor, WDFW NatureMapping Education Coordinator

WDFW LEAP Program

Nestled on the eastern slope of the Cascade Mountains, the town of Cle Elum is surrounded by undeveloped habitat that is the home of many species of wildlife and a rapidly increasing number of humans.

Soon to be the site of a 6,000-acre resort development, change is in store for the community, and the area's wild and human inhabitants.

What happens when cougars– which need individual ranges up to 100 square miles for their survival– are confronted with a booming human population? Where do North America's largest native cats go when their habitat gives way to hundreds of new houses?

The answer to those questions is the focus of an unusual research project, involving Washington Department of Fish and Wildlife (WDFW) scientists, a world-renowned carnivore research institute, and the local school district, which aims to collect and share data that could answer some of those questions.

Championed by community leaders, including Cle Elum-Roslyn School District Superintendent Evelyn Nelson, the partnership project also is expected to serve as a model for similar research in other developing areas of the state where human growth is confronting native wildlife.

The Cougars and Teaching (CAT) project will track cougar movements 24 hours a day for up to eight years through the use of high-tech Global Positioning Satellite (GPS) collars.

Project CAT combines the efforts of WDFW wildlife biologists, who will capture and collar the cats, experts from the Montana-based Hornocker Wildlife Institute who will participate in the study, and Cle Elum school students, who will learn to handle data collected from the collar transmissions in "real-life" science lessons. Project CAT is viewed as a model for integrating wildlife science, education, technology, and community participation with conservation and community planning.

Work is planned to begin this fall. As a first step, WDFW biologists would equip up to 30 cougars with GPS collars to precisely track their movements.

Research scientists with WDFW and the Hornocker Wildlife Institute will lead the scientific investigation and provide Cle Elum teachers and students with information on cougar movements gathered from the high-tech GPS collars. Downloaded information will be plotted onto satellite- and computer-generated Geographic Information System (GIS) forest classification maps. Merging these two high-tech data sources will provide scientists and students with insights into how cougars use their environment, and in turn will help wildlife managers and community planners design wildlife- and human-compatible communities.

 

How do scientists
catch a cougar?

How do wildlife scientists put a collar on a cougar– an elusive carnivore that can weigh as much or more than a man?

Two techniques are available for capturing cougars– large box traps or baying hounds that can track the large cats until they retreat up a tree.

The first step is determining where to place the trap or where to find a track for the trail hounds to pick up and follow. Box traps are baited with elk or deer carcasses. The cougar is captured unharmed as it enters the trap to feed. To find a track for trail hounds to follow, the field team searches along roads and trails in freshly fallen snow for a signs a cougar has recently crossed. When a track is found, the hounds are released with the field team in tow.

Once a cougar is confined in a trap or up a tree, wildlife biologists inject the animal with an immobilization drug. A hypodermic syringe mounted on a stick is generally used on trapped animals, while treed animals are injected with a dart fired from an air rifle.

Within a few minutes the drug takes effect and the cougar is immobile, allowing the research team to work on the animal safely. First, the cougar is identified with a numbered plastic ear tag. Then a lightweight collar with an attached transmitter, is fastened around the animal's neck. The collar is made of cotton material designed to rot and break apart after a couple of years, permitting the animal to discard the collar in the event the science team is unable to recapture the cat and remove it.

Besides marking and collaring the cougar, scientists take the opportunity to note the animal's gender, estimate its age from tooth wear and color, and record the cat's measurements including length from nose to tip of tail, height from front toe to top of shoulder, neck and head girth, and width and length of a front and hind paw. In addition, a small tissue sample and a blood sample are collected to check for disease and to obtain a genetic fingerprint for each individual. Notes are recorded and photos taken of each cat and any peculiar injuries or coloration. The team also collects a premolar or incisor tooth which is later examined in a laboratory to gain a more accurate estimate of the animal's age. The laboratory analysis includes sectioning the sample tooth into thin segments so annual growth rings can be counted, similar to the way annual growth rings are counted on a tree.

Scientists work quickly to retrieve the needed information. Once their task is complete, another medication is administered to reverse the effects of the immobilization drug, allowing the cougar to spring back into action and be released into the wild.

 

Cougars in Washington
Impetus for Project CAT comes in part from new questions and concerns statewide about cougar and human interactions.

Once associated with backcountry areas, cougars are now sighted with some frequency in locations where human development is pushing into former wilderness. As in other such "interface" areas, cougar sightings are not a rarity in the Cle Elum-Roslyn area.

With human population on the rise and cougar numbers also believed to be growing, the probability of interactions rises. In the past decade, with one million new human residents and a statewide cougar population estimated at 2,400, complaints about cougar interactions also have grown. In 2000, more than 955 complaints were registered with WDFW, nearly double the 1995 tally.

Along with growing populations, shifting citizen attitudes towards cougars and other carnivores also are changing cougar management. At one time, cougars were considered predators with bounties on their heads. In the 1960s, cougars were classified as game animals and permits were required to hunt them. In 1996, a voter initiative made it illegal to use hounds for hunting cougars. Over the last few years, a growing number of incidents of cougar encounters, pet and livestock depredation, and the injury of two children in northeast Washington, prompted the Legislature to pass a law last year reinstating the use of hounds to hunt cougars by special permit in areas with a documented recent history of human-cougar conflicts.

Controversy over cougar management is fueled partly by limited understanding of the cougar's role in the ecological community. Better information on cougars in rural and suburban areas of Washington is needed for wildlife management that maintains viable cougar populations while mitigating human safety concerns.

Project CAT offers improved cougar science
Project CAT will offer scientists more and better cougar data than has previously existed.

At present, estimates of Washington's cougar population are extrapolated from hunter harvest reports. Besides empirical information on populations, better information is needed on the animals' feeding habits, behavior, mortality and productivity in order to meet the challenges of managing cougars as fast-growing human communities encroach upon their habitat.

Cougars themselves present special wildlife management challenges , especially in areas of human encroachment. Cougars require large home ranges for survival– males dominate areas up to 100 square miles and females roam areas 30 to 50 square miles. Newly independent juvenile cats may turn up in residential areas as they search for vacant space to establish a home range. Despite their wide-ranging movements, their elusive nature permits cougars to stalk unseen much of the time. Although livestock and pet depredation is frequently attributed to cougars, it is unknown how much of a role is played by other adaptable carnivores such as coyotes and raccoons.

Through the use of advance technology, Project CAT promises to unravel some of the mysteries that thus far have surrounded cougar behavior. Technology makes the difference– the Global Positioning System (GPS) collars to be used collect information on cougar movements day and night, in all types of weather. By contrast, VHF radio collars traditionally used to track cougar movements rely on the use of a hand-held receiver to pick up a signal from a collared animal. Such field monitoring is labor intensive, less accurate and generally limited to daylight hours.

By marking a sample number of cougars with the high-tech GPS collars, project scientists will get round-the-clock information on cougar movements, showing the habitat cougars prefer, the location and frequency of prey kills, the areas cougars select for den locations, and the movement patterns of dispersing animals.

The GPS collars offer not just more, but better, information due to the high accuracy of location readings. The satellite-based technology gives location data that is accurate within 100 feet, while traditional VHF radio collar locations may be off by more than 300 feet. More precise data will allow scientists to more accurately describe how cougars utilize areas near human development, and to determine if cougars and humans use the same space at the same time of day. These insights in turn are expected to help wildlife managers develop strategies to minimize cougar-human conflict.

The GPS collars each contain an electronic chip that stores location data. Collars can be programmed to collect GPS locations at whatever interval research scientists require. Each collar is programmed to transmit back the GPS locations at a specified time. Location coordinates are downloaded and data is entered into a computer to determine the animal's annual home- range size and daily and seasonal activity patterns. The locations will be overlain onto Geographic Information System (GIS) maps which scientists can correlate to habitat, topographical features, riparian areas, and proximity to human residential and recreation areas. Because the locations are stored within the collar, the data can also be retrieved once the animal is recaptured and the collar removed, or when the collar is discarded by the animal. The collars emit a radio signal which field biologists can use to retrieve the collar and its stored data.

Besides gathering information on movement patterns to estimate the number of individual cougars occupying the study area, WDFW will develop mark-resight models comparing DNA profiles from blood and tissue samples of captured individuals to DNA profiles collected from hair traps and scats collected in the field to provide an alternative estimate of cougar numbers.

Information on the time and location of cougar activity allows wildlife managers and community planners to better define areas of potential cougar-human conflict and to develop plans for mitigating displaced cougar and prey populations.

Carnivore research team
Carnivore scientists from the world-renowned Hornocker Wildlife Institute will work side-by-side with WDFW scientists to gather data for Project CAT. Besides its scientific expertise, the Institute will provide field assistance and logistical support for the project.

The Institute's founder, Dr. Maurice Hornocker, conducted pioneering research on cougars that charted a new understanding of cougar ecology, conservation, and management four decades ago. Since then, carnivore conservation has been bolstered by the Institute's continued research on cougars, bears, and wolves throughout the western United States, including cougar research in Idaho, Montana, Wyoming, New Mexico and California. The institute's work has been featured in numerous scientific publications as well as popular magazines and National Geographic documentaries.

CAT in the classroom
Project CAT is geared toward integrating the study of cougars and their environment into the school science curriculum from kindergarten through grade 12.

Students will participate in the real-life science project by including CAT project learning tasks into math, biological and physical sciences curriculum. English and journalism classes would produce CAT news and web pages to share information and experiences.

As part of the project, elementary school students will learn basic observational and record-keeping skills, through activities such as track identification and study of animal life cycles. Middle school students would undertake simple wildlife and community surveys, map study and species-habitat associations. High school students would undertake field trips to learn to observe animals' and prey species' tracks and signs. Older students might be selected to accompany wildlife biologists on field observations.

Older students will learn to analyze field data with Geographic Information Systems (GIS) technology to develop predictive models , indicating what wildlife will be in their community in 10 to 25 years.

In addition, students will undertake community service projects to inform other community members how to live safely and responsibly in cougar country.

From kindergarten to fourth grade, students involved in Project CAT will study the life cycles of wildlife in their community– where the animals live, what they eat, when and where their offspring are born and how to identify animals through field marks and tracks.

In grades five through eight, Project CAT studies will become map-based. Students will learn to map their field observations, study wildlife-habitat associations and the presence of cougar prey species such as elk and deer, and examine historical records for indications of former habitat qualities and wildlife presence.

During grades nine through 12, students involved in the project will go on field trips to learn how to observe tracks and signs that indicate the presence of cougars and prey animals. Selected students will accompany ildlife biologists to observe cougar capture and collaring. Using data they have collected, students will learn to develop models that predict future wildlife presence.

A key tool for students involved in Project CAT is expected to be the NatureMapping Program. Created by the Washington Department of Fish and Wildlife's Project WILD, which provides workshops to teachers on fish and wildlife ecology, and the University of Washington Gap Analysis Program, Nature Mapping, promotes biodiversity studies through citizen and school-based data collection. NatureMapping involves learners of all ages in field investigation and civic participation through observing, collecting, reporting and analyzing field data.

CAT and the community
Besides offering schools a vehicle for teaching scientific observation skills and role for integrating technology into learning, Project CAT provides a means for students to meet the state-mandated service learning project requirement for high school graduations. In Project CAT, students can contribute to their community public information activities. By doing so, students can share findings from the study with the public to help develop informed community responses.

As an information conduit, Project CAT is expected to improve community understanding about ecological processes and citizens' place in the natural environment.

The future of CAT
If full funding is secured, it is anticipated that Project CAT could continue through 2009. Besides the Cle Elum-Roslyn area, the project could eventually be replicated in two other areas of the state with contrasting environmental conditions, cougar population characteristics and human disturbance levels. Each study would be linked to local public schools.

Cle Elum-Roslyn would provide baseline data about cougars in a fairly remote, rural setting where there is no history of serious human-cougar interactions. Another location in the more developed Puget Sound region eventually would be selected for study of cougars in suburban environments where there is a history of human-cougar interactions. Eventually, a third study site could be selected in rural eastern Washington where a number of human-cougar conflicts have occurred. The studies would be initiated in three phases, with the Cle Elum-Roslyn serving as the control and template for the other studies.

Other cougar research
WDFW has been conducting studies of movements and survival of juvenile cougars in western Washington over the past several years. This work has been conducted mostly in Pierce and King counties. The field work has been completed and WDFW is in the process of conducting data analysis and writing the final report. The final report is expected to be completed and available on the Internet by the end of June 2001.

WDFW is currently funding a research project at Washington State University (WSU) to determine the relationship between cougars and woodland caribou in the Selkirk Mountains of Northeast Washington, Idaho and southern British Columbia. Specifically this research is designed to determine the relationships between predator mortality, landscape-level forest structure and predator/prey dynamics. A WSU graduate student is looking at hunting regimes and forestry practices that will minimize cougar predation on mountain caribou. Results could be used for both immediate (cougar management), short-term (forest management), and long-term (forest restoration) solutions to high predation impacting ultimate recovery of the endangered mountain caribou. Field activities will be completed in 2001, with the dissertation scheduled for completion in 2002.

Related Website Links:

The Hornocker Wildlife Institute
http://www.hwi.org/

Mountain Lion Research
http://www.bigcats.com/reference/puma.html

Mountain Lion.Net
http://www.mountainlion.net

Living With Washington Wildlife: Cougars
http://wdfw.wa.gov/wlm/game/cougar/cougar.htm

NatureMapping Program
http://wdfw.wa.gov/outreach/education/naturmap.htm


Author Biographies

Gary Koehler is a Research Scientist with the Wildlife Management Program for the Washington Department of Fish and Wildlife. He is Principle Investigator on the Project CAT cougar study. He recently completed a comprehensive field investigation of black bears at three study sites in Washington. Prior to joining WDFW in 1994 he was a lecturer in Wildlife Management at Moi University in Kenya where he studied African lions and predation. He has conducted surveys for the Endangered South China tiger in China and has worked on carnivore projects in India. He has also conducted research and has published on studies of pine martens, wolverine, bobcats, lynx, cougars, and coyotes in Washington, Idaho, and Montana. Gary is a native of Washington state. He received a B. A. degree in Biology from Western Washington University and M.S. and Ph.D.degrees in Wildlife Management from the University of Idaho.


Margaret Tudor is Project WILD Coordinator and NatureMapping Education Director for the Washington Department of Fish and Wildlife, as well as Education Coordinator for WDFW's role in Project CAT. She has worked nine years with WDFW in Education and Outreach. She holds a Bachelor of Science degree in Zoology and Geology and a Diploma of Education in Science Education from the University of Adelaide, Australia; a Masters in Public Health degree in Environmental Health from the University of Hawaii, and a Ph.D. in Education from the University of Wisconsin-Milwaukee.