論文代筆價錢-入侵植物水葫蘆

| 7-8月-2019 | 论文代写

  本篇論文代筆價錢-入侵植物水葫蘆講了除了產品和人員的全球流動之外,全球化的一個重要結果是野生動物的運輸。在一個新的環境中引入不同的物種會產生許多結果,甚至是侵入性的結果。一些物種可能會根據新的習慣環境帶來積極的後果,但也有一些會造成經濟危害、環境危害甚至影響人類健康。水葫蘆是全球已知的入侵物種之一。這種入侵物種發現於南美洲,原產於亞馬遜盆地,是一種主要雜草,在全球亞熱帶和熱帶地區的50個國家蔓延。本篇論文代筆價錢由新西蘭第一論文 Assignment First輔導網整理,供大家參考閱讀。

  One significant result of globalization apart from the global movement of products and people is the transportation of wildlife. The introduction of different species in a new environment can have a number of results, even invasive results. Some species may provide positive consequences as per the new habitual environment, but some cause economic harm, environmental harms or even affect human health. Water Hyacinth is among the most invasive species known across the globe. This invasive species is found in South America, native to Amazon Basin as a major weed spreading across 50 nations in the subtropical and tropical global regions (Masto et al., 2013). This invasive plant has permanent and profuse impacts. The aim of this essay is to discuss how Water Hyacinth succeeds to colonize across diversified ecosystems while evaluating the methods used to control the species.

  Water Hyacinth Colonizing Diverse Ecosystems

  According to IUCN (International Union for Conserving Nature), water hyacinth is among the top 100 highly aggressive invasive species of the world and is also categorized under the top ten worst weeds across the globe. It can be attributed by rapid rates of growth, extensive capabilities of dispersion, wider environmental tolerance, and rapid and large reproductive output (Kaufman and Kaufman, 2013). Water hyacinth is highly successful because it colonizes across diversified ecosystem and this is possible mainly because of its efficient reproductive output. These species are known for flowering all across the year while releasing at least 3,000 seeds on annual basis. The seeds tend to survive for a long period (approximately 20 years).

  While the seeds may lack viability across different sites, water hyacinth considers colonizing new regions by vegetative propagation and reproduction of stolons that grow horizontally. During the initial phases of infestation, the weed has a firm hold to the shoreline in regions with the thriving of native aquatic plants. However, the plant does not stay limited to shallow water as it has free floating roots close to the surface unlike several emergent and submersed macrophytes (Masto et al., 2013).

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