QUESTION 4
The following information includes:
• a key that is used to classify the types of alpine and subalpine grassland habitats
• a table of abiotic and biotic data obtained from a habitat survey.
Habitat classification
Moss-and-lichen-
Moss-and-lichen-dominated? | Yes |
N |
dominated mountain summit
Nutrient-rich soil? | Yes |
Abiotic physical parameter | Reading | Reference range for nutrient-poor soil (mg/kg) |
pH | 6.1 | |
Nitrates/nitrites (mg/kg) | 4 | < 5 |
Ammonia (mg/kg) | 1 | < 4 |
Total phosphorous | 16 | < 20 |
Biotic description: Small amount of low-lying moss, growing on soil substrate. Predominantly low-lying grasses.
Using the data in the table and the key, this alpine and subalpine grassland would be classified as
(A) a moss-and-lichen-dominated mountain summit.
(B) an alpine and subalpine nutrient-enriched grassland.
(C) a calcareous alpine and subalpine grassland.
(D) an acidic alpine and subalpine grassland.
Answer D
QCAA awards 1 mark for selecting option D.
Correct option from the official QCAA answer key.