Search results
Results from the WOW.Com Content Network
Oak Creek Canyon is also a popular leaf peeping area in the fall as it is one of the few areas in the forest where deciduous trees are the dominant vegetation type. This region is also home to Sycamore Canyon, the second largest canyon in Arizona. Elevations in this part of the forest are substantially lower (Sedona is at 4,500 feet (1,400 m ...
Animal species that are endangered in the tundra include the Arctic fox, caribou, and polar bears. These animals have been endangered due to overhunting, an infestation of disease, loss of diet and habitat due to climate change, and human destructive activities, such as searches for natural gas and oil, mining, and road building. [ 10 ]
Tundra vegetation is composed of dwarf shrubs, sedges, grasses, mosses, and lichens. Scattered trees grow in some tundra regions. The ecotone (or ecological boundary region) between the tundra and the forest is known as the tree line or timberline. The tundra soil is rich in nitrogen and phosphorus. [2]
Petrified Forest National Park is known for its fossils, especially of fallen trees that lived in the Late Triassic Epoch of the Mesozoic era, about 225-207 million years ago. During this epoch, the region that is now the park was near the equator on the southwestern edge of the supercontinent Pangaea, and its climate was humid and sub-tropical ...
The life zone concept was developed by C. Hart Merriam in 1889 as a means of describing areas with similar plant and animal communities. Merriam observed that the changes in these communities with an increase in latitude at a constant elevation are similar to the changes seen with an increase in elevation at a constant latitude.
The tundra region remains a source of methane and the boreal forest region is still a carbon sink. The carbon emissions from the region, Rogers said, would probably be significant.
Natural history of Coconino County, Arizona (2 C, 8 P) E. Endemic fauna of Arizona (54 P) F. Flora of Arizona (3 C, 754 P) Forests of Arizona (1 C, 2 P) G.
The Arctic is rapidly changing from the climate crisis, with no "new normal," scientists warn.. Wildfires and permafrost thaw are making the tundra emit more carbon than it absorbs. From beaver ...