Bigger is better

1. Size of Yellowstone Park: 12,000 km² (4,680 miles²)
2. Size of Banff Park: 6,641 km² (2,590 miles²)
3. Approximate area covered by Pluie, a female wolf that travelled from Alberta into Montana, Idaho, and British Columbia, over two years: 100,000 km² (39,000 miles²)
4. Approximate size of the Y2Y ecoregion: 1,200,000 km² (468,000 miles²)
5. Size of Los Angeles, California: 1,204 km² (465 miles²)
6. Maximum home range of an adult male grizzly bear in Banff Park: more than 2,000 km² (780 miles²)
7. Estimated number of grizzly bears in Banff National Park: 60-80
8. Average home range of an adult male grizzly bear in Yellowstone Park: 2,322 km² (900 miles²)
9. Estimated number of grizzly bears in Yellowstone Park: 200-400
10. Number of grizzly bear populations surviving in North America today that inhabited natural areas smaller than 26,000 km² (10,500 miles²) in 1920: 0
11. Number of grizzly-supporting protected areas in North America today that exceed 26,000 km² (10,500 miles²): 1 (the Kluane/Wrangell-St.Elias/Glacier Bay/Tatshenshini-Alsek park and reserve system that straddles the Alaska-Yukon-British Columbia borders)

Special features

1. Number of species of mammals that live in the Y2Y ecosystem: at least 70
2. Number of species of birds that breed in the Y2Y ecoregion: at least 275
3. Number of species of raptors that migrate up and down the Y2Y ecoregion each year: 19
4. Number of species of fish that exist in the Y2Y ecoregion: 118
5. Number of species that have been extirpated from the entire Y2Y ecoregion since Alexander MacKenzie and Lewis and Clark explored it more than 200 years ago: 0
6. Highest mountain in the Y2Y ecoregion: Gannet Peak, Wyoming (4,207 m/13,804 ft)
7. Lowest point in the Y2Y ecoregion: 60 m/200 feet (MacKenzie Lowlands, NWT)
8. Greatest elevation gain in the Y2Y ecoregion: 3,154 m/10,348 feet (Mt. Robson, BC)
9. Size of the Columbia Icefield, the largest glacier in the Y2Y ecoregion: 300 km² (116 miles²)
10. Number of major watersheds in the Y2Y ecoregion: 320
11. Number of major watersheds in the Y2Y ecoregion that remain roadless: 28
12. Percentage of Y2Y ecoregion that is forested: 59%
13. Approximate area that is logged in the Y2Y ecoregion each year: 590 km² (230 miles²)
14. Percentage of Y2Y ecoregion that is uncultivated grassland: 4.5%
15. Percentage of Y2Y ecoregion that is classified as agricultural: 2.6%
16. Minimum number of cattle grazed in the Y2Y ecoregion: 1.2 million
17. Percentage of total grazing activity in the Y2Y ecoregion that occurs in Alberta: 77%

Roads

1. Total amount of linear disturbances (seismic lines, power lines, and roads) that have been built in the Y2Y ecoregion: 676,957 kilometers (446,792 miles)
2. Minimum total number of kilometers of seismic lines and roads constructed by the oil and gas industry in the Y2Y ecoregion: 504,900 (313,038 miles)
3. Overall road density in the Y2Y ecoregion: 0.54 km (.85 miles)
4. Road density at which the U.S. Forest Service estimates habitat can continue to support grizzlies: 0.3 km (.48 miles)

Residents and visitors

1. In 2003, approximately 4.1 million total population: 2.3 million people in the US portion of Y2Y and 1.8 million people in the Canadian portion.
2. Total number of visitors, in 1996, recorded in national and provincial forests in the Y2Y ecoregion: 77.5 million
3. Total number of visitors, in 1996, recorded in the 10 national parks located in the Y2Y ecoregion: 36.9 million
4. Increase in visitation between 1988 and 1996 to Canadian national parks in the Y2Y ecoregion: 96%
5. Increase in visitors for Banff National Park between 1988 and 1996: 10.6 million
6. Population growth in the Montana, Wyoming, and Idaho sections of the Y2Y ecoregion in the 1980s: 7%; between 1990 and 1995: 14%
7. Population growth in the Alberta and British Columbia sections of the Y2Y ecoregion in the 1980s: 1.7% and 2.1%, respectively
8. Number of traditional Native American territories within the Y2Y ecoregion: 31

Economics

• Total combined income from the farming, ranching, mining, oil and gas, and wood products sectors in the U.S. portion of the Y2Y ecoregion in 1995: $1.79 billion (US)
• Total combined income from the service sector and professional industries in the U.S. portion of the Y2Y ecoregion in 1995: $14 billion (US)
• Total income derived from non-labor sources in the U.S. portion of the Y2Y ecoregion in 1995: $13.8 billion (US)
• Net jobs created in the service sector in the Canadian portion of the Y2Y ecoregion between 1986 and 1991: 75,350
• Net jobs created in the "primary" industries (logging and forestry, mining, oil and gas, agriculture) in the Canadian portion of the Y2Y ecoregion between 1986 and 1991: -150

Source: Yellowstone to Yukon Conservation Initiative http://www.y2y.net/media/facts.php