Chestnut Blight and American Chestnut Trees
Since the early 1900's a disease known as Chestnut Blight has infected many American Chestnut trees and causing their removal from forests. A greater look at the history of this fungus as well as the mechanisms of action will allow us to learn on how to preserve the American chestnut. At one point, the American chestnut was virtually eliminated. With the help of government acts and conservation agencies, the American chestnut is slowly growing back in population. Two methods of restoration of the chestnut include a hybridization and the use of hypovirulant strains. This issue shows a variety of interest from ecologists to those in the timber industry who cannot lumber Asian species of chestnut primarily because of their size.
In the 1880's a harmful fungus known as blight, inhabited the United States from imported Japanese chestnut trees. Blight quickly spread, killing chestnuts and chinquapins, which is another species of chestnut that produces 1 nut per bur. In 1904, Chestnut blight appeared infecting trees in New York City and spread at a rate of 20-50 miles per year. By 1906, W.A. Murrill reported that this disease is known to occur in New Jersey, Maryland, District of Columbia, and Virginia. In 1912, the Planet Quarantine Act was passed to reduce the chances of plant deterioration or devastation prevention. Chestnut Blight or Chestnut Bark Disease was originally found in 1904 and within 50 years, it spread across the eastern United States, from Maine to Georgia and as far west as the edge of Michigan. By 1950, the American chestnut was essentially eliminated as a forest tree. In 1972, importation from Italy gave a biological control in which a virus helped prevent the blight f...
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...thesis does, however, lack experimental evidence of any kind.
The American chestnut which was once almost eliminated from existence in the late 1950's has once again emerged thanks to conservation efforts. Chestnut blight, a deadly fungus, has the ability to kill chestnut trees. However, some chestnut species in Asia have resistance to blight. As a result, a method of conservation has been through hybridizing American species with Asian species. Another method of conservation has been through hypovirulence strains in the infection is reduced. Independently, this hypovirulence method may be a reason why some American chestnuts are surviving despite being infested with chestnut blight. This issue remains important to both the timber industry, although that isn't why chestnuts are being restored, and certain ecological organizations including the Nature Conservancy.
It’s not the latest comic book super villain that we’re worried about, here in Northwest Ohio. No, it’s a little green beetle that, since 2003, has been munching its way through our neighborhoods and Metroparks. The Emerald Ash Borer (EAB) feasts on our Ash trees, leaving us little choice but to spray a bright red stripe or “X” on the trunks of the mortally wounded flora.
The devastating chestnut blight was discovered invading its first victims in 1904. After exposure, the fungus enters into the trees cambium through the bark causing a canker. The fungus then spread around the cambium, girdling the tree, cutting of its life support and ultimately causing death. Many methods were used to try to prevent further infections, chemical fungicides, and burning other chestnuts around infected areas, but all were unsuccessful. The blight would soon reach through the Southern United States destroying all known native American chestnut trees.
Murphy, Jim. An American Plague: the True and Terrifying Story of the Yellow Fever Epidemic of 1793. New York, NY: Clarion Books, 2003. Print.
Colonial living in the seventeenth and eighteenth centuries in the New World was both diverse and, in many cases, proved deadly through such avenues as disease, Native American attacks, a lack of proper medical treatment, and disastrous weather conditions. Even through all of these hardships, the first colonists persevered, doing their best to see the blessings in their lives and create a better life for their children through all of the uncertainties. Nothing, it seems, in the original colonies was set in stone except for the fact that they never knew what the next day would hold in store. Everything, even small mishaps, had dramatic impacts on the social, economic, and political aspects of their lives. These circumstances, however, were more strongly influenced by geography than class position, unlike what many were used to in England. How population, economics, disease, and climate played into the social conditions of early colonists is truly a story for the ages. Whether people were seeking land, religious freedom, or money and profits, everyone worked to a certain extent just to survive, let alone thrive, in the wilderness that was North America at that time.
The perspective the author gives to this book is a unique. Smallpox according to most histories does not play the role of a major character, but a minor part. In my opinion smallpox was a major factor during the Revolutionary War, and Feen focuses on several key areas which allows us to see just how bad this epidemic was and the grip it had not only on the soldiers, but the colonist as well.
Fiction of each era reflects the insecurities, concerns, and ideals of its generation, and through this genre, authors are able to construct entire universes of their own fantasy. These universes might contain characters that push boundaries for what is socially acceptable, but the authors need not be held accountable for their actions. The same holds true for works of the 19th century, where authors question traditional Victorian notions of the boundaries of acceptable gendered behavior and sexual roles. Specifically, Bram Stoker’s Dracula pushes social conceptions of customary gendered conduct through the vampires’ and Dracula’s actions and characterization as mutable. Qualities, such as intelligence, sexuality, and parenthood as portrayed
Bram Stoker’s novel Dracula, is a highly controversial work of fiction that is still being read for the first time today. Dracula touches many different categories including; sci-fi horror to 1800’s English romance literature. This is the main reason why the novel Dracula can be analyzed in many different ways using many different literary theories. The theory which stuck out most to me while reading this novel was the Feminist Theory. The Feminist Theory cannot be used to analyze Dracula as a whole novel, but it can be used in order to analyze the different female characters throughout the book. Therefore, Bram Stoker’s Dracula can be analyzed through the feminist theory by focusing on the characters Mina Harker, Lucy Westenra, and the three brides of Dracula.
The communities of various native plants have been significantly minimized as a result of ...
During the Victorian era women were expected to be either a mother and a wife, or a pure, innocent girl. Any other deviation from the set path resulted in punishment, both physically and socially. Deviation can vary as women being over sexual to resembling men in their actions. Bram Stoker’s novel, Dracula, is no exception in its representation of Victorian ideals. For his purposes, Stoker uses symbolism, tone, and diction throughout to convey the standard Victorian British perception of themselves. Through this conveyed standard to express his belief that gender roles are essential and relevant to Victorian society and that there are consequences if strayed from.
In reading Bram Stoker's Dracula, I find the treatment of the two main female characters-- Lucy Westenra and Mina Harker-- especially intriguing. These two women are two opposite archetypes created by a society of threatened men trying to protect themselves.
School days of Manny become troublesome because as a Mexican American, he has to face racial discrimination, inequality, and disrespect. Even though he is not good boxer, Manny wants to be an equipment manager because he wants to be respected. When he and his friend, Albert, get a chance to join Lencho’s boxing team, he feel proud that he can defeat white by winning boxing matches. Due to racial discrimination, Manny was not accepted in schools of white. Thus, he naturally gets hatred towards white, as they are being recognized ev...
Prescott, Charles E., and Grace A. Giorgio. “Vampiric Affinities: Mina Harker and the paradox of Femininity in Bram Stoker’s Dracula.” Victorian Literature and Culture 33 (2009): 487-515. JSTOR. Web. 29 April 2013.
The worldwide demand for high potency sweeteners is expected to rise especially with the new practice of blending various sweeteners; the demand for alternatives is expected to increase. The sweet herb of Paraguay; Stevia rebaudiana Bertoni produces; in its leave;, such an alternative with the added advantage that stevia sweeteners are natural products. The sweet steviol glycosides have sensory & functional & properties superior to those of other high potency sweeteners. Stevia is to become a major source of high potency sweetener for the increasing natural food market in the coming future.
...s creditor and debtor. However, no matter what type of dealing a client with an Islamic bank, their relationship will never be debtor and creditor. For example, under Mudharabah basic, the relationship between a bank and a client is investor and entrepreneur only. Moreover, when doing investments in conventional banks for example doing an savings in conventional bank for a certain period, the bank has to guarantee all its deposits when maturity, regardless the bank is loss money in an unexpected business failure. However, for Islamic bank, if based on al-wadiah principle, Islamic bank will only guarantee deposits for all deposit accounts but if under mudharabah principle, client have to share the loss if loss exist. Therefore, both Islamic and conventional banks have a totally different way in their operation although the service they provide is almost the same.
Our group have been assinged to discuss on the topic above but in Islamic Banking perspectives. Therefore, before going any further, let us clarify definition of the Principles of Islamic Banking and clarify what are the elements involve in the Principles of Islamic Banking. Beside, we will also do some comparison of product or services offered by both banks which are conventional and Islamic banking. Apart from that, we will also clarify the problems or challenge faced by the agency which practices the Islamic banking in their agency.