Why Do Grizzly Bears Live

However, over 98 percent of grizzly bears have been eliminated to the number around 800 to 1,000 in the Lower 48 states. 01/06/2016 The Brewing Battle Over Grizzly Delisting and Trophy Hunting in the Yellowstone Ecosystem TheHuffingtonPost.com, Inc. (http://www.huffingtonpost.com/wayne-pacelle/the-brewing-battle-over-g_b_8923316.html) As such, it was hard to argue that grizzlies are thriving. Since European colonization, they have lost half of their continental habitat, and even in BC around a third of populations have either die out or are currently endangered. (Anna Taylor) Overkill - trophy hunting slams BC's Grizzly bears 7th February 2014 Ecologist /Resurgence Trust (http://www.theecologist.org/News/news_analysis/2271852/overkill_trophy_hunting_slams_bcs_grizzly_bears.html) Another point is that they have startling low reproductive rate among the terrestrial mammals. It takes ten years for a female grizzly to replace herself in the population, and she will stop breeding in her mid-to late 20s. Washington Department of Fish and Wildlife Grizzly (sponsor)/Biology & Behavior (title) (http://westernwildlife.org/grizzly-bear-outreach-project/biology-behavior/) A female can give birth to a maximum of 10 cubs over her lifetime, and half of the cubs will die within a year.(Ibid) What is more, grizzly bears play an important role in forest ecosystem as seed dispersers and nutrient providers. Generally they benefit the surroundings by transporting berry seed to enable them to geminate, or pile up their fresh manure as fertilizer. While they searching for tree roots or ground squirrels, they increased the amount of nitrogen through soil disturbance. (Ibid) As a predator, grizzlies can control prey population. They hunt vegetarian so that regional density of plants would not decline in large quantities. Grizzly bears can be said as a keystone species in their

“Kodiak bears are a unique subspecies of the brown bear, living exclusively on the islands in the Kodiak Archipelago and have been isolated from other bears for about 12,000 years.” (Daele 2010)

Grizzly bears in their native habitat are wild animals. The bears (grizzlies, brown, and other varieties) found in Alaska are among the largest on earth. Grizzly-human interaction is best done minimally, if at all: the only reason that bears do not react as quickly as they might to humans (considering them prey) is that in their habitats, they have access to plenty of food and they do not

The bear have evolved along time ago and now there is only eight species existing. They evolved from early canids during the late Oligocene and early Miocene, about 25 million years ago. The earliest ancestors where the Dormaalocyon Latouri. An intermediate ancestor was the short faced bear, very similar to the modern day bear. It lived through the pleistocene period. It grew to thirteen feet long and was a herbivore. The ancestors to the modern day bears lived in the same climate and ate the same things. The modern bear contrast from the ancestor because the ancestor was more skinny and was smaller, and it was more cat like. The eight species of bear that still exist. They are the Polar bear, Brown bear, American black bear, Asian

The Grizzly Bear is one of nature’s last keystone species that is contributing to the Western United states and Southwestern Canada. The Grizzly Bear is thought of as a vicious beast who kills people without intent. Grizzly Bears are actually important to the environment and ecosystem that they live in. This Bear is an intelligent animal, which serves a role of preserving a plant’s way of life. It creates soil disturbance which causes more nitrogen to be produced to generate more nutrients for plants.

The white phased black bear was said to have traversed barriers of the sea during the last ice age when glaciers covered most of northwest British Columbia. When temperatures started to rise, and glaciers started to retreat it is believed that the white bear was then isolated on the islands off the coast of BC. The white coats would suggest an adaptation to the white snow for hunting, however if that was the case, the evolutionary trail should have left the recessive gene behind when it was no longer useful to them in the temperate forests. Most research that is done on the Spirit bear is to try and understand the polymorphism of this species and how it has come to last among a low frequency in a minute area. Evidence now suggest that the reason for the white fur is actually a very important adaptation for the bear and is still very useful even in the array of

The latin translation is ursus californicus. The grizzly can differ in colors, but are almost always brown in color. The Grizzly was one of the largest known bears, behind the humongous polar bear.(state) Before their extinction in California, the Grizzly lived and strived in low valleys of Yosemite. They were the kings of the area. They were prey to no animal.

The Grizzly bears population has grown from about 200 in 1975 to approximately 600-1200 in the 18 million acers of the Greater Yellowstone ecosystem. (Yellowstone)

Grizzly Bears - they are large bears that inhabit North America. Many people hunt them.

The grizzly sheds the thick part of their coat during the summer. The coat also protects the grizzly bear from insects or any types of bugs. The grizzly bears have a very large home range that they will roam through. The grizzly bear also spend hours of the day walking around, but that is common for grizzly bears. The wear in the temperate rainforest is sunny and sometimes rainy. When the grizzly bear needs to move quickly through their habitat it can be done so at a speed of 30 miles per hour. The mating season for grizzly bears start in mid-May it continues until the middle of July. Grizzly bears can live in the wild up to 30years. They can also die at the age of 25. Grizzly bears can be found in woodlands, forests, alpine meadows and prairies. They prefer to be around streams or rivers. Grizzly bears are mainly solitary, except for mothers and their cubs. Grizzly are known to meet up at a river or a stream. Grizzly bears are also very strong swimmers. Grizzly bears use sound, movement, and smells to communicate with each other. Grizzly bears happen to groan and moan to get each others attention. Grizzly bears also rub their bodies on trees so they scratch their self. Throughout the summer grizzlies build up fat by eating as much

The Spirit Bear, or actually called the Kermode bear, lives in the Great Bear Rainforest in the Northwest area of the Canadian province British Columbia. Half way up the coast is where they live. “Scientifically, the white ones, along with their closest black relatives, belong to a subspecies of black bear.”(Smithsonian) The big white bear is probably around 300 lbs. It is cold where they live, and their fur definitely helps them keep warm. They hunt for things like salmon, and just eats it up. Right now, the some estimates say there are only around 100 of the specie left. They are very rare and definitely one of the rarest type of

Black bears in BC have a population that is 9 times that of the grizzlies, however, the results show that the grizzlies have inflicted 9.7 times more attacks on humans in the past 16 years. This goes to show that grizzly bears have a higher tendency to attack due to the natural factors and stresses that act on them cause them to be much more aggressive with less tolerance to threats (Herrero, Aspects of Evolution and Adaptation in American Black Bears (Ursus americanus Pallas) and Brown and Grizzly Bears (U. arctos Linne.) of North America n.d.). Many other papers such as Herrero’s study in both 1972 and 1985 showed the same results where grizzlies had higher rates of attacks compared to black bears in BC and so it clearly shows that there

The polar bear, the largest land carnivore in North America, one of the largest animals in the world and a favorite at zoos worldwide, has, over the years, adapted to its harsh Arctic environment. The appropriately named ‘ursus maritimum’ or sea bear usually lives between 15 and 18 years in the wild and spends most of its life on ice. It is the most recent of the eight bear species. The first polar bear was a brown bear subspecies, with brown bear dimensions and brown bear teeth. The polar bear evolution was rapid due to the small population and extreme pressure to survive. Even today, the polar bear continues to evolve to better adapt to the harsh realities of Arctic life.

In North America, the grizzly bear is a keystone species - not as a predator but as ecosystem engineers. They transfer nutrients from the oceanic ecosystem to the forest ecosystem. The first stage of the transfer

The polar bear lives up in the Arctic region where global warming and climate change are melting the ice caps that the bears thrive on. They use the ice as a platform from hunting and rest. The random pocket holes in the ice, where the seals pop up at, is where the polar bear catches its prey. With this reduction of ice, “the abundance of seals, and increases the amount of energy and time needed for hunting, leaving less energy for reproduction” (Endangered Species and Habitats).