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

How does the percentage of bare earth (and therefore the percentage of earth covered by vegetation) vary moving inland from the high tide level?

Extracts from this document...

Introduction

Geography Coursework Question How does the percentage of bare earth (and therefore the percentage of earth covered by vegetation) vary moving inland from the high tide level? Hypothesis With movement inland from the high tide level, I expect percentage bare earth to decrease, due to more species of vegetation being able to survive, so this will result in less earth being left bare. This is due to the change in conditions affecting both type and quantity of vegetation present change. Figure 1 is a table to summarise these changes. Figure 1 Condition Change with Reason Movement Inland Near the sea, shells made of calcium carbonate pH Decreases create alkali conditions. Inland there are less shells so pH decreases. Moisture Increases Water is less salty inland so has higher water Availability potential so plants can take up water more easily. Strength Decreases Strong winds blow inland from the sea, so with of wind movement away from high tide level, strength of wind decreases. Decreased strength of wind, higher moisture Soil Quality Increases availability, and less acidity means more humus can accumulate and soil can develop better. ...read more.

Middle

60 10 5 5 80 90 100 110 120 130 140 150 0 0 0 0 50 0 0 0 The data in blue is what I expect to an anomaly. Graph of Group 1 Data This graph shows that the general trend as distance from high tide level increases, is for percentage bare earth to decrease. My line of best fit goes through most points, however the point at 120m, as expected is anomalous, as it is very far away from the expected value for percentage bare earth here. The Spearman's rank correlation shows a strong negative correlation, as when excluding the anomaly, the result is -0.83. The means I can accept the hypothesis that a relationship between bare earth/% and distance away inland from high tide level exists- as distance increases, percentage bare earth decreases. I have decided to include data from another group, as this will help in seeing see the accuracy, consistency and therefore reliability of results, thus allowing me to draw a conclusion and evaluate my investigation. ...read more.

Conclusion

Despite one anomaly, I can consider the results for this sand dune reliable, as the Spearman's rank correlation result was close to -1. However I will now try to explain the anomalies found: For both sets of data, the main anomaly was for the measurement taken at 120/128 m from the high tide level, and this suggests that as the anomaly occurred at the same distance for both groups, perhaps there is a foot path at this distance which therefore accounts for the sudden increase in percentage bare earth (there will be less vegetation on the footpath, so more bare earth) Possible Errors: 1. Human misjudgment, applicable due to unpredictable weather conditions, inability to communicate easily with other members of group, and difficulty in using equipment accurately, due to rain. 2. Certain slacks were moister than normal, so different species were present than was expected, so this may account for the vegetation not being as expected, as this would affect percentage bare earth. 3. Some areas were more sheltered from the wind etc than others, so these areas may allow greater growth of vegetation than other areas. These areas appeared to be quite random and unexplainable. Photo to show technique used to calculate gradient of the land. 1 ...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 Coastal Landforms 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 Coastal Landforms essays

  1. "An investigation into the methods of coastal management along Brighton's Coastline and the reasons ...

    Nonetheless, the small quantity of questionnaires completed means that there is not enough data here to make a conclusive account. To make a conclusive account I will have to produce more questionnaires so that I can get more results and can compare the similarities and differences in more depth.

  2. How and why does the sand dune succession at Coatham Sands, North Yorkshire change?

    The air contained less salt towards the climax which meant better growing conditions, this is why the amount of vegetation increased. However, the golf course built at Coatham sands prevents climax vegetation growth as it is situated on the most fertile soil in the succession.

  1. Sand dunes coursework Introduction - Hayling Island

    We found we could use the fact that there were fewer results for the blow out dune, to show how much the separate dunes differ from one another. Primary Figure 31 Figure 8 Figure 9 Figure 10 Figure 26 Route to Enquiry Question Nature/Purpose of Information Method of Data collection/

  2. How and why do the beaches vary at Barmston, Mappleton and Hornsea?

    Mappleton Sept.97 Mar.98 Cliff lost post set up rate (M/Y) 50 At roadside N. of Mappleton 135.00 134.50 0.50 59.50 2.83 51 At end of Green lane 5.00 5.00 0.00 91.60 1.97 52 Corner fence post of car park. 50.10 45.00 5.10 103.77 2.28 53 On Dyke line, S.

  1. GCSE Georgraphy Coursework: Coastlines

    Advantages: Very effective. Relatively cheap. Maintains natural appearance of coast. Preserves a beach for leisure purposes. Disadvantages: Beaches probably need to be re-nourished if storms cause erosion, increasing the cost. Offshore dredging may increase erosion in another location. Used: In Cley-Next-The-Sea Analysis Groyne Measurements Sheringham Sediment build up is generally greatest on the eastern side.

  2. Mullaghmore Sand Dune Fieldwork

    There are four different types of sand dune, and at each one, we took a vegetation count. We made a grid at each sand dune using two tape measures and used a random sampling technique. Getting numbers from a phone book and using them as the coordinates.

  1. I am going to study Camber Sands and Fairlight to see if the hypothesis ...

    * Quadrat - This is a hollow, flat metal square which we dropped every two metres up the beach to measure ground cover and also used it to help measure pebble size and roundness. For ground cover we dropped the quadrat and estimated the percentage cover inside it (i.e.

  2. Describe and explain the features and processes associated with sea level change

    Along side the coast many features can form, these include raised beaches, fall lines and costal plains. Raised beaches contain all the characteristics of a normal beach but are found between 5 and 15 meters above the current beach upon a cliff.

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