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6 pages/≈1650 words
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13 Sources
Style:
Harvard
Subject:
Life Sciences
Type:
Essay
Language:
English (U.K.)
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MS Word
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Topic:
England during the Holocene
Essay Instructions:
In this essay, below are the questions asked and each one should have separate brief introduction, discussion and brief conclusion and the sources should only come from journal papers and textbooks. At least 500words each 1.How do we know trees have grown on peat bogs in England during the Holocene? Critically examine the techniques you would use in such an environmental reconstruction. 2.Why are peat bogs viewed as environmental archives? Critically evaluate techniques that are employed by Quaternary scientists on samples obtained from peatlands. 3.Why are peat bogs such valuable palaeoenvironmental records?
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Section 1
Introduction
A peat bog is a physical feature that is characterized by a wet spongy ground that is majorly composed of decomposing vegetation. The drainage system of this physical feature is normally poorer as compared to that of a swamp. This area is normally not fit for farming or any other cultivation activities instead the soil itself can be dried and later used as fuel. A peat bog is mainly composed of 95% logged water and the rest is organic matter that majorly comes from rotten plants. Martini, I. P., MartiÌnez CortizaS, A., & Chatsworth, W. (2006) Most countries of the world that have got this physical feature England included have stepped up plans in a bid to conserve the environment by reclaiming and restoration of the peat bog areas as they hold substantial volumes of terrestrial carbon. Alley, R. B. (2000).
How do we know trees have grown on peat bogs in England during the Holocene?
Based on past scientific research and discoveries it will be prudent to note that indeed trees once grew in peat bogs not only in England but the world across where these natural features happened to occur. One of the major scientific discoveries that support this notion suggests that tree trunks of pine trees (mega fossils) were discovered in peat bogs. Barber, K. E. (1981) .This directly implies that there must have a period in history that these pine trees really existed in the peat bogs. Having decomposed in those particular areas and that occurrence is common to almost all peat bogs substantially supports the notion that the trees indeed grew there. George, D. G. (2010).
According to the renowned scientist Christian Vaupell in his research he tried to analyze the width of tree rings of buried pine trees that were found in the peat bogs and come up with the conclusion that indeed the said trees once grew in the peat bog areas but stopped due to climate change after the Holocene. He argued that initially tree growth thrived due to the favorable warm conditions that existed at the peat bogs but they seized to develop in the peat bogs area due to a shift in climatic conditions to cold conditions that were unfavorable for their growth. The change in climate was majorly as a result of the effects of the Holocene that occurred. Martini, I. P., MartiÌnez Cortizas, A., & Chesworth, W. (2006)
Critically examine the techniques you would use in such an environmental reconstruction.
Damming drains and plough furrows
This technique is responsible for creating better hydrological conditions for peat bog restoration and it also encourages rapid recovery of damaged peat bog vegetation.
Felling trees
This reconstruction technique is ideal for restoration of raised and blanked peat bogs that were previously altered or damaged due to afforestation. Despite this technique having an equal share of disadvantages it enhance rapid re-emergence of peat bog cover vegetation and conditions tha...
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