2011年11月2日 星期三

Annotation 1(draft + rev. ed.)- The cost of using alien ornamentals

Annotation 1(rev.)- The cost of using alien ornamentals

Changes in the rev. ed.:

1. I removed unnecessary words which makes the sentences lengthy and pointless, such as “This article you see here today is originally a chapter from this book...” to “The article is a chapter from this book...”
2. I amended the citation format in accordance with APA(American Psychological Association) style, both the reference list and in-text citation.
3. One paragraph is added at the end of the annotation to make it more complete.
4. The scientific name of the fungus in paragraph three is italicized. (In the biology field, all scientific names should be either italicized or underlined.)

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Tallamy, D.W. (2009). Bringing nature home: How you can sustain wildlife with native plants. London: Timber Press

The article is a chapter from this book written by Douglas W. Tallamy. Douglas is professor and chair of the Department of Entomology and Wildlife Ecology at the university of Delaware in Newark, Delaware. The aim of his book is as simple as is stated on the title, i.e. how you can sustain wildlife with native plants. And chapter 7, “The cost of using alien plants” (pp. 72-92), further explains the cost of using alien plants which is included in the practice of horticulture.

In addition to the aforementioned point in the previous chapter, there are three consequences resulted from bringing alien plant species, e.g. ornamentals, that serve as supporting evidence for the appeal present in this chapter. First, loss of native food sources. Second, introduction of harmful disease and insects. Third, alien plants places our eco-system in risk.

The author gave numerous examples for the latter two points that further strengthen his cause. He takes the Chestnut tree and its accompanying fungus as the first example (pp. 73-74). The Japanese chestnut and the fungus Cryphonectria parasitica were together introduced to the Northeast of the U.S. in 1876. This is used as an example to elaborate how a functional wipe-out of the native American chestnut was carried out by the fungus, and how it can reduced food source for other native second consumer in terms of trophic level or, food chain. From cause to effect, this example clearly explained how it happens and why it is unwise to support the horticulture industry if alien species is their products.

After reading this chapter, I think the two points offered by the author are actually only one. They are two events in one series that happens one after another. One is the cause and the other the effect. However, beside this, this chapter really shed light on the “alien ornamentals: good or bad ?” debate because it gives real world example, explaining why and how alien plants becomes invasive. It is crystal clear when I compare this to the analogies in Taiwan. The pine wood nematode which wiped out literally one third pine tress in taiwan and the brown rot disease that plague trees in places where horticultural activity is high all testifies to the author’s course and my appeal, supporting the use of alien plant species is unwise and should be stopped.

In general, this chapter provide adequate examples which serve as reasons why we cannot cultivate alien plants. Though it may provoke a feeling which might be interpreted as racial discrimination, the stereotyped hate or dislike to aliens, or people with which we were not originally familiar, we could not blame alien plants for the harms since it is we human that bring them to places where they were not naturally born to be.

Annotation 1(draft)- The cost of using alien ornamentals

CHAPTER 7: The cost of using alien ornamentals. In Bringing Nature Home: How you can sustain wildlife with native plants
Douglas W. Tallamy

This article you see here today is originally a chapter from this book written by Douglas W. Tallamy. Douglas is professor and chair of the Department of Entomology and Wildlife Ecology at the university of Delaware in Newark, Delaware. The aim of his book is as simple as is stated on the title, i.e. how you can sustain wildlife with native plants. And chapter 7, which is of interest in terms of my issue paper, further explains the cost of using alien plants which is included in the practice of horticulture.

In addition to the aforementioned point in the previous chapter, there are three consequences resulted from bringing alien plant species, e.g. ornamentals, that serve as supporting evidence for the appeal present in this chapter. First, loss of native food sources. Second, introduction of harmful disease and insects. Third, alien plants places our eco-system in risk.

The author gave numerous examples for the latter two points that further strengthen his cause. He takes the Chestnut tree and its accompanying fungus as the first example. The Japanese chestnut and the fungus Cryphonectria parasitica were together introduced to the Northeast of the U.S. in 1876. This is used as an example to elaborate how a functional wipe-out of the native American chestnut was carried out by the fungus, and how it can reduced food source for other native second consumer in terms of trophic level or, food chain. From cause to effect, this example clearly explained how it happens and why it is unwise to support the horticulture industry if alien species is their products.

After reading this chapter, I think the two points are actually only one. They are two events in one series that happens one after another. One is the cause and the other the effect. However, beside this, this chapter really shed light on the “alien ornamentals: good or bad ?” debate. It is crystal clear when I compare this to the analogies in Taiwan. The pine wood nematode which wiped out literally one third pine tress in taiwan and the brown rot disease that plague trees in places where horticultural activity is high all testifies to the author’s course and my appeal, supporting the use of alien plant species is unwise and should be stopped.

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