Dr. David Mattson is Lecturer and Visiting Senior Scientist at the Yale School of Forestry and Environmental Studies, Research Associate at the Northern Rockies Conservation Cooperative, and Adjunct Faculty at Northern Arizona University. His former positions, prior to retirement from the U.S. Geological Survey, included Research Wildlife Biologist, Leader of the Colorado Plateau Research Station, and Western Field Director of the Massachusetts Institute of Technology-US Geological Survey Science Impact Collaborative, all with the USGS. He holds degrees in Forest Resource Management and Forest Ecology and a doctorate in Wildlife Resource Management from the University of Idaho.


Dr. Mattson has studied large carnivores for 35 years and has incorporated ecological information from pumas and grizzly bears into demographic, habitat, and risk management models. His ecological research has included focus on details of carnivore behaviors, including foraging, predation, and relations with humans. His human dimensions research has focused on conservation policy issues dealing with social, political, and organizational dynamics that shape policies and practices of carnivore and other conservation programs. David teaches classes on relations between science and policy. His work has been featured in Science, and Ecology and invited talks at the Smithsonian, American Museum of Natural History, the American Institute of Biological Sciences, and International Conferences on Bear Research and Management.


Dr. Mattson’s web site is http://www.allgrizzly.org/

Piikani Nation Treaty



Find out everything you ever wanted to know about the biology and ecology of grizzly bears. Authored by world-renowned bear biologist Dr. David Mattson, this site summarizes and synthesizes in beautiful graphic form the science of grizzly bears.


Find out how much Native Americans care about the grizzly bear, with a Grizzly Treaty that has been signed by more than 270 tribes, as well as numerous traditional societies and leaders. The document has become a symbol of international unity in defense of sovereignty, spiritual and religious protection, and treaty rights. 


For an in depth and comprehensive look at the ecology and demography of grizzly bears in the northern US Rocky Mountains, along with all the research relevant to conservation of these bears, see Mostly Natural History of the Northern Rocky Mountains.


GOAL is a coalition of nearly 50 tribes  (and counting) who object to the federal and state plans to delist grizzly bears prematurely and allow trophy

hunting of this sacred being.

GOAL advocates for the tribes'

legal right to meaningful consultation and also for the reconection of tribal peoples to their traditional homelands

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