Mountain pine beetle

area was never logged so it represents the old growth forests. There were old species here that we’d already identified, but many new species, too. The white pine was the species of focus at this location: it is often the tallest species in MN, one tree was found was about 275 years old. There is only about 7% of the pre-settlement white pines left in MN since many have been logged. Ferns were another species prominent in this area: wood fern (gold hairs on stem), and interrupted fern (spore…

Washington. Historically, they could be found from Alaska to Mexico and from California to Ohio. The grizzly bear was once common on the Great Plains. However, human encroachment has forced the remaining brown bear populations to move to rugged mountains and remote forests that are undisturbed by humans. Population- Historically, there were around 50,000 grizzly bears in North America. Today, there are an estimated 1,800 grizzly bears remaining in five populations in the lower 48 states. Most…

Studies show that in the 2011-2012 winter season, the state of California received nearly 300 inches less snowfall than it did the previous winter. While many of California’s dry winters are a direct result of ridges off of the west coast, climatologists suggest the drop in precipitation during the 2011-2012 winter was due to below average sea surface temperatures, or La Niña (Seager et al.). La Niña is the result of cooling sea surface temperatures that lead to an overall temperature of the…

(875 words) Woolly Days ahead for the Hemlock Tree -Angela Cannon-Crothers I like bugs, ask anyone. I am awed by the mechanics of their life cycles, the biodiversity of the entire Order of Insecta, the magical beauty of so many of their kind. But there are a few that strike more than a few heebe-geebes -- some are downright frightening. Take the tiny hemlock wooly adelgid (ah-del-jid) for instance: a needle sucking scale insect of miniscule proportions that reproduces asexually (no male…

Front Page: The Rocky Mountain National park in is Colorado. The elevation differences are vast and vary between 8,000 to 14,259 feet. The park is open year round. One of the most popular activities in the park is to observe the vast number of species. The park was created in 1915 and its area is 415 square miles. Carbon Cycle: The carbon cycle is the processes by which carbon is transferred throughout an ecosystem. In a typical carbon cycle, carbon is released in the form of carbon dioxide…

There are common insects such as ants and mosquitoes. With the most infamous being the spruce bark beetle which were killing the trees in a random epidemic in Yukon. In the aspect of predator vs prey a good example would be the Lynx and the Snowshoe Hare. The snowshoe hare has a bright white coat during the winter for camouflage in the snow and brown…

predicts in 10 years the snow of Kilimanjaro will disappear. Glaciers are huge masses of compacted ice. All over the world they are disappearing because of the weather changes. Almost all mountain glaciers in the world are now melting and many of them as fast. Mount Everest is popular for being the biggest tallest mountain ever. If glaciers disappear in the next world's half century, 2.6 billion of the world's people will face a very serious drinking water shortage. Greenhouse gases are also…

Human activity has a great impact on global warming. Events, such as burning fossil fuels, contributes much of the carbon dioxide that is emitted into the atmosphere. Global warming effects caused by human activity affects the earth 's climate in many ways. It is melting the earth 's poles, glaciers and ice sheets which causes sea levels to rise. It is also shifting climates and precipitation patterns and is forcing animals to migrate. Global warming is caused by the Greenhouse Effect. The sun…

The film’s overall claim is that, as a result of man’s pollution and the increase of greenhouse gases, there has been to an increase in global temperatures over recent years that falls under the term of global warming. Al Gore qualifies his claim by explaining that not all greenhouse gases are as destructive to the atmosphere as we would think. He explains that we need some greenhouse gases to retain some of the sun’s rays so that the Earth can maintain a suitable temperature for the survival…

Pollution in the United States is on the verge of the extreme and this is caused by Exhaust gases from cars, which shifts the climate change and with high excesses of air pollution, can cause health problems down the road. Recently in the news, Volkswagen has made the news for cheating their emission test for their diesel line. Why do we care? The United States of America has set regulations on how much a car exhaust can pollute, with this being said; each car company has to make the…