• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

"There has been debate over present day characteristics of the biome of tropical regions. For some they are viewed as a natural response to the climate of the areas whereas others regard them as a product of human interference" Discuss this statement in t

Extracts from this document...

Introduction

"There has been debate over present day characteristics of the biome of tropical regions. For some they are viewed as a natural response to the climate of the areas whereas others regard them as a product of human interference" Discuss this statement in the context of a tropical biome you have studied (40 marks) There is no questioning the fact that mans impact on the natural world has been increasing at an exponential rate since the dawn of the industrial revolution; but as we learn more about the extent to which we have effected the natural world doubt has been cast on whether the present day characteristics of a seemingly natural biome is the result of human interference or as a natural response to the climate and other abiotic components in the region. In this essay I will show a true representation of both the human and natural influences of this biome, and assess the extent to which these influences have shaped the present day characteristics of the tropical biome through use of examples. The tropical biome encircles the earth within the latitude 10°N and 10°S of the equator, in this essay I will focus on that which occupies the Amazon Basin in South America. ...read more.

Middle

These distinct variations in characteristics due to geographical location and abiotic factors are evidence that the current state of the rainforest is a result of natural responses to the climate of the areas. Due to its equatorial location, the Amazon receives high levels of sunlight throughout the year, resulting in high levels of photosynthesis and lots of biomass; together with the warm, wet climate creates an environment that encourages growth. This results in intense competition for sunlight, which has lead to the development of a vertically stratified forest, just another example of how characteristics of the biome are a result of natural processes. It is also important to note that individual plant species characteristics are the result of adaptations to environmental factors such as: Leaves in the canopy are large in order to maximize photosynthesis as light levels are lower whereas emergent trees have smaller leaves to minimize the water loss through transpiration. Leaves in the understorey have extended apical ends or ?drip tips? in order to reduce water build up on the leaf which hinders transpiration. This is especially important in the understorey layer as lack of wind and high humidity reduces transpiration rates. ...read more.

Conclusion

burning of cheap fossil fuels such as coal, CO2 levels rise effecting the growth of plants, the increasing temperatures caused by the release of greenhouse gasses also decrease the efficiency of photosynthesis as enzymes vital to the process become denatured, hindering the efficiency of the process, causing the CO2 levels to rise further. The increasing temperatures also upset the balance of the water cycle in the rainforest, resulting in a net water loss in the biome, an impact who?s consequences are not been fully understood yet. This essay intended to assess the extent to which these influences have shaped the present day characteristics of the tropical biome, using the Amazon as an example. From discussion and assessment of the features it has become evident that the present day characteristics of the biome are a result of a natural response to the climate, this is shown through the variations in biodiversity depending on the region and their varying climate. Although mans impact is not to be forgotten about, its effect is minimal when compared to natural effects at present. Although as mans influence grows so to will the impact, and the full consequences of the rising CO2 levels and global temperatures are still not fully understood. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Environmental Management section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Environmental Management essays

  1. With reference to one major biome you have studied, evaluate the role of human ...

    The reasons are both political and socio-economic. The two governments of these countries both have transmigration policies. In Brazil in the 1970's the people were encouraged to make use of the new highways and translocate from the northern and eastern states into the Amazon where they were given land for free but were expected to use it productively.

  2. What are the effects of Deforestation?

    This results in increased water regulation, allowing for a more rapid recovery from droughts and abiotic stresses. In exchange, these plants provide the fungi with sugars produced through photosynthesis (Harley, J.L., Smith, S.E, Mycorrhizae Symbiosis (1983), Academic Press, London). Recently, a study done in Venezuela suggests that mycorrhizae innoculation could be used to aid in rehabilitation of deforested soils.

  1. Nowadays, climate change is a hot topic and has been the subject of intense ...

    Flooding may frequently happen at this area and results to soil erosion especially during raining season. Flooding may destroy crops and to the losses of the nutrient in the soil. As a result, citizens who live in those islands may face a shortage of food.

  2. Climate Change, sea level rises and engineering Hull for the future. In areas ...

    Man places will experience warmer summers. "One estimate for the British Isles suggests that by 2030, average temperatures could rise by over 2 degrees Celsius"(Brooker C, Lansbury T, 2009, The Real Global Warming Disaster, London). The British Isles has a mild climate compared to that of continental areas and the

  1. Free essay

    Theory of Climate change

    Large areas of seas such as the Baltic and Mediterranean are now dead from pollution. Fishing is the most traditional activity in Australian waters . Today a fleet of 10,000 boats lands a harvest of 200,000 tonnes of fish, prawns lobsters ad shellfish worth $1.2 billion a year.

  2. The greatest risk to health in modern society is development itself. To what extent ...

    Smoking prevalence varies across the regions; for example prevalence of smoking amongst adults was greater in Scotland than England and Wales. According to the National Alcohol and Tobacco Authority (NATA) statistics, nearly 22,000 Sri Lankans, mainly those under aged die due to tobacco related products annually.

  1. With reference to transport management in urban areas, discuss the extent to which sustainability ...

    This scheme begun in 1990 and was recently extended to include Saturdays, as the city focussed on lower air pollution to avoid health issues such as a higher incidence of respiratory disease. The scheme is estimated to reduce the number of cars on Mexico City?s roads by 20% on a given day, reducing annual CO2 emissions by 300,000 tonnes.

  2. The characteristics of the vegetation of tropical biomes are more the outcome of continued ...

    The Inter Tropical Convergence Zone extends along a long band in the deep tropics, and can often be traced around the whole globe. This persistent band of organized convection draws air into it all low levels from latitudes north and south of its location.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work