Results The tree of this study was chosen, and winter twig was identified using key given in lab. Initial properties of the winter twig were the brown sharp buds. It was determined to be an aspen tree by the coloration of the buds, along with the shape and texture. The twig had multiple buds along the branch and had three on the branch that was selected initially. The tree in the study was located outside of Beck hall and has access to sunlight, with partial cover from the building’s overhang. The tree was located next to multiple aspen trees that were also used as a comparison point to one another. The bud first starting to swell at the April 20th point and the length and width of the buds leveled out. Following the reaching of this threshold …show more content…
Specifically, we hypothesized that rates of development and growth would be affected by temperature and humidity because of alteration of growing conditions. To test this hypothesis, we monitored one tree and observed changes in growth compared to environmental variables over a six-week time period. Tree was measured once weekly to determine bud/leaf length in inches. Temperature, Wind, Humidity, and cloud cover data were recovered for every day of the six-week period. Aspen trees are known as fast growing trees when there is an increasing temperature and atmospheric CO2 concentration (Tulles et al 2012). Growth of the tree occurred more substantially during times of higher temperature while remained stagnant in periods of moderate temperatures. Aspens roots can be damaged by severe cold, and early thaws and this would explain the delayed growth of the tree until there was a consistent temperature. The spring alternated between being mild and having snowstorms, and this made growth conditions for the tree inadequate. (Tyler 2013). This result of strengthened growth during periods of higher temperature supported our initial prediction. Sunlight was observed more during days of higher temperature than lower temperature. Sunlight is a component of the photosynthesis formula. With more sunlight, the trees are able to have more energy, which would also explain the expansive growth once there was a consistently higher temperature. This is likely due to the availability of sunlight to the tree during these times as higher temperature generally results in more sunlight. Root respiration is higher in areas of higher soil and air temperature, while radial growth is correlated with air temperature (Du and Fang
Shortleaf pine tends to grow rather slowly in the early stages of its life when compared to its closest competitor, loblolly pine. Therefore it cannot compete for the best sites under natural regeneration, but, because of it's tolerance of a wide range of site conditions, shortleaf pine is found naturally in areas where loblolly pine will not grow effectively. It is for this reason that shortleaf pine was chosen for this site instead of loblolly. When planted artificially, it was found that after the first few years of development, shortleaf pine will match loblolly in height growth on the better sites and will surpass loblolly on the poorer sites (Harrington, 1987). Because of this, shortleaf pine is the most commonly regenerated pine in the northern and western parts of its range where the site conditions are not as ideal as in the southern part of its range.
I will now describe characteristics of various sugar maple growth stages, beginning with the seed stage.
Figure 3 shows a dramatic decrease in bud formation of approximately 20 percent from four to eight seed plantings, followed by slight decreases of 3 percent of less in bud formation as significantly greater quantities of seeds are planted.
how strong and wise the tree is by all the patterns and age marks on the tree. Rings are features that can tell
The Eastern Hemlock is often used for construction timber. The Eastern Hemlock is the offical state tree of Pennsylvania and is often found in cool moist habitats. This evergreen produces cones 3/4" long that are egg-shaped and hanging singly from the tips of twigs. Under each small section of the pine cone are 2 small, winged seeds (Cook Forest, 2013).
Ø Amount of rainfall that runs down the tree. If it is too much, it
Grelen, Harold E. May Burns Stimulate Growth of Longleaf Pine Seedlings. New Orleans: Southern Forest Experiment Station, 1978.
Redwoods were named for the color of their bark and heartwood. These trees have a high resistance to fungus and diseases due to the high tanin content in the wood. The dense, fibrous bark has an even higher content, and acts as an insulator from periodic fires which have plagued the countryside for centuries. Though these trees are immense, they have delicate foliage. The needles are narrow and sharp-pointed, and combine to form feathery sprays. The cones are an inch long and typically contain fourteen to twenty-four seeds. The older trees offspring sprout form their parents' roots in order to take advantage of the established root system.
...ong, and shorter stalks are 20-100mm long. The flower length from the axils are one to three centimeters long. The optimum flowering time is from May through August. The fruit are pod shaped with seedlings coiled into two to three spirals with a strong net vein three to four millimeters long (montanaplant-life.org).
The life cycle of a pecan tree has four main components: germination, rooting, sprouting and lifespan and reproduction. The many different elements of the pecan tree life cycle contribute to the growth and development of the pecan trees we see today. The life cycle of a pecan tree has many different elements. The cycle begins with the spreading and germination of seeds. Mature pecan trees produce and drop thousands of seeds to the ground during the fall season. Dispersal of these seeds may be through the water, wind or animals but wind will end up pollinating the seeds. Pecan tree seeds lay dormant throughout the winter and will begin the growth process in the spring. The seeds require an adequate amount of warmth and rain throughout the winter and early spring months. Once the germination process has finished, the seed...
Many old-growth forests across the landscape of northern Lower Peninsula of Michigan contain a mixture of tree species rather than a monoculture. Many researchers have put forward ideas to explain the competition and co-existence of tree species in such communities. A theory explaining competition and co-existence between two species is gap regeneration. Gap regeneration is when a gap is created upon death of a plant individual and a new individual, sometimes of the same species as died and sometimes not dependent on environmental heterogeneity, takes its place (Kenneth Lertzman). Canopy gaps during gap regeneration can be explained by either reciprocal replacement or habitat preference . In a reciprocal replacement, seedlings of one species would be found predominately under large trees ...
In the short story, The Shivering Tree, by John McLeod, past experiences are shown to have a profound effect on the development of an individual. Nanabush learns from his past mistakes which results in the growth of his maturity. In the story, Nanabush past experiences give him the ability to learn from his previous mistakes by turning his enemies into supporting allies, which assists him in resolving his conflict with the Juggler at the end. First, Nanabush act of making peace with Owl demonstrates his maturity, which puts in the right direction for success. Secondly, the growth of his maturity is displayed with Nanabush's final confrontation with the Juggler and permanently abandons him.
Robert Penn Warren’s “Blackberry Winter” is the story of one young boy’s sudden and painfully realistic venture from behind the blissful cloak of childhood innocence into the more brutal reality of the world. Warren captures this transition through the eyes of the young and happily naïve Middle Tennessee farm boy, Seth. When the story begins, the nine year old Seth is lingering on the very edge of his innocence, but is undoubtedly still in the throws of the methodical and simple life that only a child can truly have. Before that fateful day when the unusual stranger appeared so suddenly and seemingly out of nowhere, Seth led the secure and rhythmic life that comes with both ignorance and innocence. Seth having never left or even given much thought to life outside his small farm community, he had been sheltered from the true evils of the world. He had no concept of time or change, and had never needed one. That day, and that stranger, forced him to become aware of things that were beyond his control and even made him question the very things that he had always held as the gospel truth.
Franklin, J. F., et al. (1981). In Ecological Characteristics of Old-Grow Douglas Fir Forest, (GTR PNW-118). Retrieved July 9, 2005, from USDA Forest Service Web Site: http://
Nigh, Gordon D., Ying, Cheng C. & Qian, Hong. (2004, October). Climate and Productivity of Major Conifer Species in the Interior of British Columbia, Canada. Forest Science 50(5), 659.