Physical Fieldwork Flashcards

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1
Q

What is the length of Knoll Beach?

A

2 km

This length allows for extensive surveying.

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2
Q

What is the depth of the dune system at Knoll Beach?

A

1 km deep

This depth supports multiple groups collecting data.

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3
Q

Who owns Knoll Beach?

A

National Trust

They allowed free access for surveying.

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4
Q

Why is previous research significant at Knoll Beach?

A

It provides background on vegetation changes

This helps in understanding ecological impacts.

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5
Q

What type of area is Knoll Beach classified as?

A

Popular tourist and local destination

This allows for studying human impact on dunes.

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6
Q

Fill in the blank: Knoll Beach allowed multiple groups to collect a _______ simultaneously.

A

200m transect

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7
Q

What does sand dune succession theory describe?

A

It describes how sand dunes form from sand blown inland that is then trapped and colonised by plants.

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8
Q

Which species are the pioneer species in sand dune succession?

A

Pioneer species include sandwort and marram grass.

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9
Q

What changes occur in the soil during sand dune succession?

A

The natural cycle of decomposition increases nutrient value and water retention, making the soil more acidic.

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10
Q

What types of plants grow on older yellow and grey dunes?

A

Species such as heather and gorse grow on large older yellow and grey dunes.

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11
Q

What species are found in the mobile dunes at the front?

A

Marram grass, with long and extensive root systems and curled, waxy leaves, is found in mobile dunes.

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12
Q

What species are found in the fixed dunes?

A

Heather and gorse are found in fixed dunes, needing more shelter and nutrient-rich, acidic soil.

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13
Q

What was the sample size for data collection?

A

We had 40 data points over 200m (every 5m).

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14
Q

What sampling methods were used to collect data?

A

We used systematic sampling to collect gradient data every 5 metres and random systematic sampling to collect vegetation data.

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15
Q

What equipment was used for data collection?

A

50m tape measure, ranging poles, clinometer, quadrat, and species identification sheet.

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16
Q

What limitation was noted regarding the clinometer?

A

Clinometer lacked accuracy.

17
Q

How far into the dunes was the data collected?

A

We only measured 200m into the dunes and therefore likely missed changes further back such as the grey and mature dune.

18
Q

What is a sand dune profile?

A

A type of line graph that visually represents transect data to show dune shape.

19
Q

What mistake should be avoided when discussing data collection?

A

Avoid talking about how you collected the data; be specific and give examples of findings.

20
Q

How did we assess the effectiveness of our data presentation?

A

By overlaying vegetation and pH data above the transect to make links between data sets.

21
Q

What example illustrates the link between vegetation and dune type?

A

Marram grass dominated the first ridge, indicating it is likely the fore dune.

22
Q

What was a limitation of writing percentage vegetation cover as a number?

A

It wasn’t very visual, reducing our ability to spot interesting patterns.

23
Q

What alternative methods could have been used to identify patterns?

A

Proportional symbols or pie charts could have been drawn to identify patterns.

24
Q

What factor added human error to the transect plotting?

A

Plotting the data required a lot of precision and care, leading to mistakes.

25
Q

Why was it important to use the same scale on the x and y axis?

A

It allowed an accurate to-scale representation of the dune system, avoiding exaggeration.

26
Q

What could have helped identify ridges and dips more confidently?

A

Adding photos would have helped identify features and shown the impact of manmade footpaths.

27
Q

How did we calculate the height of the land through the transect?

A

By plotting distance and gradient data using a protractor.