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The wildlife of Alaska is both diverse and abundant. The Alaskan Peninsula provides an important habitat for fish, mammals, reptiles, and birds. At the top of the food chain are the bears. Alaska contains about 70% of the total North American brown bear population and the majority of the grizzly bears, as well as black bears and Kodiak bears.
The plant life here is varied for Alaska, composted of a mixture of conifers and other trees, shrubs, and herbs. The dominant trees in this region are black spruce (Picea mariana), white spruce (Picea glauca), lutz spruce (Picea x lutzii), quaking aspen (Populus tremuloides), balsam poplar (Populus balsamifera), black cottonwood (Populus trichocarpa) and paper birch (Betula papyrifera).
This is a region of spruce taiga forest covering much of the central and northern interior of the U.S. state of Alaska and Yukon, Canada, from the Bering Sea and Beaufort Sea coasts to the Richardson Mountains in the east with the Brooks Range to the north and the Alaska Range to the south. This is an area of low hills and flatlands from sea ...
According to the Köppen climate classification system, Kobuk Valley National Park has a Subarctic climate (Dfc) with cool summers and year around precipitation. Dfc climates are defined by their coldest month averaging below 0 °C (32 °F), 1–3 months averaging above 10 °C (50 °F), all months with average temperatures below 22 °C (71.6 °F), and no significant precipitation difference ...
This ecoregion is a mountainous area of ridges up to 1200m between peaks up to 2500m, located on the southern, Pacific Ocean side of the Alaska Peninsula from Cook Inlet west through the Kodiak Archipelago to Unimak Island at the beginning of the Aleutian Islands chain, while the area around Cook Inlet at the head of the peninsula is the neighboring Cook Inlet taiga ecoregion.
Alaska is the most biodiverse state with 15 ecoregions across three biomes in the same realm. California comes in a close second with 13 ecoregions across four biomes in the same realm. By contrast, Rhode Island is the least biodiverse with just one ecoregion—the Northeastern coastal forests —encompassing the entire state.
The warming observed at high latitudes over the past 50 years exceeds the global average by as much as a factor of 5 (2–3 °C in Alaska versus the 0.53° global mean). The effects of increased temperature on boreal forest growth have varied, often depending on tree species, site type, and region, as well as whether or not the warming is ...
Caribou travel to the coastal plain during June and July to give birth and raise their young. Migratory birds and insects flourish here during the brief Arctic summer. Tens of thousands of snow geese stop here during September to feed before migrating south, and muskoxen live here year-round.