Ecology Lab 1 Essay

The Canadian Shield has many forests, within those forests are a lot of trees. Mostly trees grow in the Shield. The types of trees that are found are birch, aspen, hemlock, pine and balsan. The trees listed are found in the southern parts of the Shield. There is also tamarack, black spruce and white spruce trees are in the forests of the Shield, a lot of the forests in the shield have a mix of many trees.

Every forest has a story to tell. By looking closely at its habitants, that story can be interpreted. Much of this narrative is written in the trees: their age, their tolerance to shade, and the rate at which they grow are all characteristics that can imply a lot about their environment. Exploring these relationships and how they connect with each other can indicate the health and history of the land. Heiberg Forest, located in northern New York, was once used for agricultural purposes in the 1800-1900’s. (Nowak, Lecture Notes) Much of the land once used for farming was left to regrow back into a young forest. The life history of different tree species can be determined by examining the most common species in Heiberg.

Biological Issue. (n.d.). Retrieved March 16, 2014, from http://averillbiology.blogspot.com/2011/01/redwood-trees-devastating-deforestation.html CHAPTER FOUR: ECOLOGICAL EFFECTS: THE TERRESTRIAL ENVIRONMENT. (1998). Environmental Management Handbook, 177-192.

Taken together, oak, pine, and maple are the state trees for more than half the states.

The topography of the island is also of note. The west end of the island features a closed-canopy forest with more hardwood trees. The east end of the island is better characterized as a “boreal forest,” a term used to describe regions that are mostly covered by coniferous forests. It is good to note that the balsam fir is found on both ends of the island, but that samples used in the study from the west end of the island were, on average, older, but shorter, than those samples found on the east side of the island.

The ancient forests of the Northeast aren’t the only aspect of the bioregion that’s fate have been at perpetual risk since the early settlement of Europeans. There is no question that forests still dominate the landscape of Northeastern region accounting for “60% of the total land area, and in New England alone, the coverage is 80%”. Still the species that exist within the understory of the forests have undergone an equally dramatic transformation because of human interaction with the land and the harvest of its resources. Some species in the understory of the mixed forests of the Northeast have been driven out of the region, are under intense ecological pressure, are on the brink of extinction, or have already gone extinct in the region. Perhaps one of the most harmful and impactful effects colonization of the Northeast has had on the resources of the land is the introduction of non-native species and diseases into the region. Over time the overall makeup of the forests have changed drastically as an example, “…the American chestnut once made up as much as 25% of the trees in some areas and was economically the most important hardwood in the Eastern forests”. The introduction of chestnut blight at the turn of the century accounts for

D) support biological communities similar to those found at lower elevations on similar south-facing slopes.

Environmental effects such as altitude, latitude, rainfall and soil drainage, and how they can affect beech forests will be investigated. Anthropogenic effects will also be looked at, explaining how human activity can affect ecological processes and the composition of plant and animal species within the beech forest ecosystem.

Based on the current conditions of the area, we hypothesis that tree survivability will be highest in elevations above 3,000 feet and below 3,300 feet, highest in slopes between 0 - 45 degrees, and highest in aspects between 0 - 33 degrees. Tree survivability will also be highest in area with the best soil, water quality, and forest health conditions for successful tree sapling growth.

The Acadian forest in Canada takes up 12.1 million hectares, and can be distinguished from other parts of Canadian forests by its location in the lowlands and deep valleys and by its mixed hardwood and softwood composition. The position of these trees in deep valleys isolates them from other forests, and limits their ability to further naturally spread their population geographically, and causes them to be more significantly impacted by disturbances. The Acadian forest region covers the Canadian provinces of Prince Edward Island, Nova Scotia, and New Brunswick, with a rich diversity of plant and animal species consisting of many shade-tolerant trees and lichens. Yet these shade-tolerant trees are slowly transitioning into small seedlings as logging practices abolish old trees. The old-growth hardwood population in specific provides critical habitats for animal species though these trees are declining in numbers due to extensive logging. With the declining old-growth trees, the number of critical habitats will also decline and animal species will most likely die out. These regions are affected by climate change at the same time, which increases the vulnerability of Acadian biodiversity.

The Great Smoky Mountains are home to over 100 native species of trees, more than are found in northern Europe.

old trees, small trees and shrubs. The timber volume of about 19 billion cubic meters,

In Area 2, the species with the highest dominance value was the Oregon White Oak (70.6%). Oregon White Oaks provide shelter, housing, and food to various animals as well. Diversity of birds is often higher in Oregon White Oaks than in an adjacent coniferous forest. Using the dominance data, it tells us that at this moment in time Oregon Oak and

In this set of materials, the article brings three hypotheses to explain the decline of population of the yellow cedar which is common in northwestern North America; however, the speaker is in disagreement with whatever the author mentions.

Our lab investigated the morphological characteristics of leaves found in the sun and shade on various species of maple and oak trees around campus. Our null hypothesis was Acer and Quercus acclimate similarly with regards to SLW (specific leaf weight), size, and sinuosity. Our hypothesis was Quercus acclimation is greater than Acer SLW, size, and sinuosity. We tested these hypotheses by picking small sections of a branches from both maple and oak trees. A group was assigned either a maple or an oak tree, and needed a total of three different trees per group. Once three different trees were chosen, groups needed three shade leaves and three sun leaves of off each different tree. In total, each group should then end up with 18 leaves for testing. After collecting the leaves, we ran them through the LiCor 3100 leaf area meter to identify the area of each leaf. Major results found by the classes’ mutual data was each one of our p-values were greater than .05. This means that we failed to reject the null hypothesis. Thus, the lab results do not support our hypothesis that Quercus acclimation is greater than Acer SLW, size, and sinuosity.