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GCSE Geography > swanage case study > Flashcards

swanage case study Flashcards

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1
Q

what was the aim of our geographical feildwork?

A

to investigate changes to the characteristics of the sand dunes at Knoll Beach in Studland Bay

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2
Q

what was hypothesis 1? what was hypothesis 2?

A

-there is significant change to the shape of the sand dunes at Knoll Beach Sutudland Bay
-there is significant change to the vegetation at Knoll Beach Studland Bay

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3
Q

which county is Studland located in?

A

dorset

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4
Q

where is Dorset in the UK?

A

the south-west

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5
Q

Studland is on the coastline of which sea?

A

the english channel

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6
Q

give a justification of why this location(Studland Bay, Dorset) is good for our investigation?

A

-it has lots of sand dunes = 1km
-we can access the area (dunes) safely as national trust let us

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7
Q

name 3 possible risks that we may have been faced with while competing our dune feildwork

A

-tripping over and hurting ourselves in the sand
-snakes, adders and other dangerous animals in the dunes
-extreme weather like thunder/heavy rain making the beach dangerous

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8
Q

what problem was created for the Studland sand dune ecosystem by the SSSI and National Trust sand dune protection?

A

it was overprotected. heather was not squashed down by people or other species so it dominated the ecosystem meaning that there was little biodiversity and animals like lizards had no home

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9
Q

how has the National Trust brought the sand dunes back to life?

A

they let people back onto the dunes to disturb the heather and create ecological balance

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10
Q

how could human activity have influenced the shape of the dunes? 4 points

A

-overprotection
-repeated human feildwork
-walkers eroding the dune
-horse riders/walkers trampling on and altering the vegetation

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11
Q

how did you decide where to measure the dune transect?

A

it was randomly decided by where on the dune we put the tape

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12
Q

how did you measure the angle dune transect? 3 points

A
  1. places two ranging poles 2 metres apart
  2. aimed the clinometer at a specific one of the lines every time and releasing the trigger to find the angle
  3. did the same at 2 metre intervals
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13
Q

how did you collect the data about the vegetation? 2 points

A
  1. collected the type and amount of vegetation under the quadrat using a plant species guide
  2. did this every 2 metres
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14
Q

what was the sampling method for the vegetation data?

A

systematic

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15
Q

why did you use systematic sampling for the dune height?

A

so that we had a clear measurement of every point of the dune so we could see the dune changing

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16
Q

what kind of data did this experiment create?

A

quantitative data

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17
Q

why was quantitative data a good thing to have as a result of this investigation?

A

-it means we can present it easily on graphs
-we can calculate exact percentages for the vegetation
-we had exact measurements for the dune height

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18
Q

what two contrstraints were there?

A

-we had never done it before
-some groups didnt finish

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19
Q

what was the sampling method to collect our dune transect angles?

A

random as where we placed our poles was randomly decided

20
Q

how did you present your data on the dunes?

A

a transect line graph so we could clearly see the height of every part of the dune.

21
Q

how far inland did we go from the beach?

A

100 metres

22
Q

how did you present the data on vegetation?

A

a dispertion graph for vegetation type over the transect line graph to show where the type of vegetation was present

23
Q

what are the strengths of using a transect line graph to present the data on dunes?

A

-easy to understand and analyse
-we can spot patterns and anomalies
-we can compare with peers

24
Q

what are the limitations of using a transect line graph to show the data about dune height?

A

-it can only be used with continuous data

25
Q

what are the strengths of using a dispersion graph above our transect line graph to show the spread of vegetation?

A

-clearly shows the change in the type of vegetation across the dune (links to hypothesis)
-can compare different sections of the dune easily to link back to theory
-allows us to spot anomilies

26
Q

what are the weaknesses of using a dispersion graph to show the spread of vegetation on the dune?

A

-need a large amount of data to be effective and to analyse the mature dunes (further inland)

27
Q

what 3 key points did you notice in your research on the dune relief? suppourt these with evidence and an explaination.

A

-no embryo dunes. it just curves straight up into a grey dune. this could be due to storm damage on the front of the dune or walkers.

-questionable grey dunes. there is no ridge where the grey dune should be. this could be due to students/tourists sitting and walking on the fore dune.

-no slacks (only footpaths). the relief never goes below -12 degrees. could be due to horse riders and walkers

28
Q

what 3 key points did you notice about the vegetation after doing your research? suppourt this with data and an explaination.

A

-rapid change from grasses to heathers as you go inland. goes from mainly grasses to only heather at 36 metres. heather often prevents other things from growing as it dominated and blocks sunglight

-there is no vegetation until at 16 metres in we are introduced to grasses, cats ear and sea rocket all at once. thats 0% to 44% in 2 metres. this is plants havent had time to dominate and grow in the younger dunes.

-limited spieces diversity. mainly only spotted heathers and marram grasses. heathers are very dominant plants and block out sunlight so other plants cant grow.

29
Q

was hypothesis 1 (significant change to the shape of the dune) proven or disproven? why?

A

it was inconclusive to an extent. there was a clear fore dune but a lack of embryo dune. mature dune sort of mixes with the yellow/fore dunes

30
Q

was hypothesis 2 (significant change to the vegetation) proven or disproven?

A

inconclusive to an extent. very little species diversity in the first 100m. mostly heathers early on which goes against the sand dune theory.

31
Q

give 2 strengths of our investigation?

A

-easy to use equipment (species guide, quadrat, clinometer)
-went to a sand dune on Knoll Beach which allowed us to investigate/takle our aim

32
Q

give a weakness of our investigation

A

-only collected data for 100m

33
Q

what is a quadrat?

A

a metal square with little squares inside it. each square represnted 4% so they added up to 100%. we used this to calculate the perentage vegatation coverage on a small area of land.

34
Q

what is a clinometer?

A

measures the angle at which its being pointed. we pointed it at a particular line on the ranging poles each time to measure incline/decline

35
Q

what is a ranging pole?

A

poles placed 2m apart from each other. used as an aim for the clinometer.

36
Q

what is a tape measure used for?

A

to check the distances between the poles/quarat

37
Q

What key theories and concepts underpin our enquiry?

A

-sand dune succession theory (more vegetation on layer dunes, dunes get bigger ect)
-Cyril Driver Project - the reason they cut off the dunes
-plant adaptations - why only certain plants are found at each point of the dune

38
Q

At what distances was marram grass present?

A

0-30 m

39
Q

At what distances was heather present?

A

40-100 m

40
Q

What dune were we missing?

A

Embryo

41
Q

When was there a clear fore dune and how high was it?

A

-at 20m
-6m above sea level

42
Q

How can you make an experiment more reliable?

A

-more samples
-look at multiple locations
-different time scale (eg do it for a week instead of a day)

43
Q

When was Nevis Bay and what was it?

A

-2015
-offshore wind farm proposal (rejected because of opposition)

44
Q

How big is Tudeley village?

A

1.7km

45
Q

Evaluate the validity of our physical enquiry

A

-only did one transect
-systematic sampling so we didn’t miss anything
-simple data collection methods appropriate for our skill level like clinometers (however sand got stuck in them)
-plant identification was subjective (could’ve used an app)
-gained quantitative data that helped us prove hypothesis

GCSE Geography (17 decks)

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