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Essay代写:How does biodiversity affect nature

2018-03-08 | 来源:51due教员组 | 类别:Essay代写范文

下面为大家整理一篇优秀的essay代写范文- How does biodiversity affect nature,供大家参考学习,这篇论文讨论了生物多样性如何影响大自然。自然系统决定了当今物种的多样性,而不同物种反过来又对自然环境产生了明显的影响,因为自然界的所有物种都是由它自身组成的。像水葫芦、澳大利亚的野兔等,都是生物多样性破坏了大自然的例子。所以当我们通过引入新物种来增加生物多样性时,我们需要考虑到最坏的可能性。

biodiversity,生物多样性,英国代写,essay代写,论文代写

There exists an interplay between ecosystem and biodiversity. It is natural system that shapes what a diversity of species today while different species in turn exert a visible impact on natural environment. If we delve into the history of our earth, we may find numerous species have once emerged, evolved and ended in disappearing. The changes occurring to biodiversity also deliver a sustained impact on natural system, as all species in nature consist of it itself. At this point, I would like to discuss how biodiversity impacts our Mother Nature by giving the two examples of eichhornia crassipes and feral rabbit problem in Australia.

Human activities, to some extent, come detrimental to biodiversity conservation and thus natural environment (Reyers, et al, 2012). The intervention made by humans usually cause disorders to food chain and natural recycling. Eichhornia crassipes, an invasion aquatic plant, was introduced in New Orleans in 1884 as a gift given by a group of visiting Japanese (Miller, 2013). Such plant is said to generate oxygen and be transformed into a sort of food for animals. However, what was unforeseeable for good-willing Japanese guests is that the water hyacinth soon choked rivers, suffocated fish and even led to congestion in water road for ships. Such problem, however, threatens the whole world in these days, exacting a heavy toll on North America, Asia, Europe and Australia (Gannon, 2014). This aquatic floating plant with thick leaves produces does a severe harm to natural system and ecological recycling. It could smother species living in water, take in excessive nutrients and stand as a barrier in trade routes (Gannon, 2014). It has caused dread as a source of headache that has captured worldwide attention. The governments around the world have taken steps to deal with it, including pouring oil over its flowers, but achieved little progress (Miller, 2013).

Apart from eichhornia crassipes, another example that explains how biodiversity affects natural system is the wild rabbit problem faced by Australia. In 1788, rabbits were introduced to Australia by the First Fleet as a food supply and kept in cages (Office of Environment & Heritage, 2015). However, the population of the introduced species exploded since 1886 to an extent where rabbits invaded 4 million square kilometres of Australia (Office of Environment & Heritage, 2015). The impact of the introduction on Australia’ s ecosystem has been devastating, as the rabbits with brilliant reproductive capability can kill young trees in orchards and forests. They live on vegetables and thus ought to be blamed for destroyed pasture. On top of that, the feral species also account for erosion problems, as they eat plants, exposing topsoil that is vulnerable to sheet, gully and wind.

In conclusion, when we increase biodiversity by introducing new species, we need to take the worst possibility into consideration, since certain species could alternate or even transform what we live in today, as eichhornia crassipes and feral rabbits do. As such, we need to be alert to environmental changes and become more aware of environmental protection.

References

Gannon, M. “Water Hyacinth – In and Out of Your Water Garden.” Full Service Aquatics. 15 January 2014. From http://fullserviceaquatics.com/aquatic-plants/water-hyacinth-in-and-out-of-your-water-garden/ Retrieved 19 January 2017

Miller, G. "The Crazy, Ingenious Plan to Bring Hippopotamus Ranching to America". Wired. 20 December 2013. From https://www.wired.com/2013/12/hippopotamus-ranching Retrieved 19 January 2017

Office of Environment & Heritage, NSW. “Rabbits - fact sheet.” 17 September 2015. From http://www.environment.nsw.gov.au/pestsweeds/RabbitFactsheet.htm Retrieved 19 January 2017

Reyers, B., Polasky, S., Tallis, H., Mooney, H. A. and Larigauderie, A.“Finding Common Ground for Biodiversity and Ecosystem Services.” BioScience, vol. 62, no. 5, 2012, pp. 503–507.  

Reply

Hi,

I really agree with what you’ve thought about biodiversity and ecosystem. Biodiversity, as I understand, contributes to an important part of ecosystem and has been put on the environmental agenda on a worldwide scale (Bocking, 2000). However, human activities continue to make interventions to biodiversity, as you’ve  mentioned, by introducing foreign species. From my perspective, the interventions we’ve made include not only introduction of invasive species, but environmental degradation caused by us. It is known to all that we inevitably do something harmful to nature. Plastic bags we use everyday, for example, virtually generate so-called “white pollution” that is detrimental to not only necessary arable land for food production but water quality of rivers that stand as home to fish or other species (Sang, 2010). Besides, biodiversity in agricultural ecosystems also sustains food yield that is the lifeblood of human beings (Jarvis, et al, 2007). This illustrates how human practice affects biodiversity and then natural environment. As we make cuts to biodiversity by excessive interventions, ecosystem also suffers from what we commit. To solve this problem, as far as I’ m concerned, we need to take steps to conserve biodiversity to the degree where humans and other species can live in harmony and enjoy good ecological environment.

References

Bocking, S.“Encountering Biodiversity: Ecology, Ideas, Action.”Biodiversity in Canada: Ecology, Ideas, and Action. University of Toronto Press, 2000, pp. 1-3.

Jarvis D., Padoch C., Cooper H.“Biodiversity, Agriculture, and Ecosystem Services.” Managing Biodiversity in Agricultural Ecosystems, Columbia University Press, 2007, pp. 1–12.

Sang, A.“Plastic Bags and Environmental Pollution.” Art Education, vol. 63, no. 6, 2010, pp. 39–43. 

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