Pakiri Sand Mining Quiz

What is the projected population of Auckland by the early 2030s?

• 1.7 million

• 2 million

• 1.5 million

• 2.5 million

What is special about the white sand of Pākiri?

• It is used for agriculture.

• It is ideal for high strength concrete.

• It is used for making glass.

• It is used for road construction.

How much sand did McCallum Bros supply in 2021?

• 500,000 tonnes

• 346,600 tonnes

• 400,000 tonnes

• 300,000 tonnes

What is one environmental benefit of transporting sand directly from Pākiri to Auckland?

• Reduces water pollution

• Reduces carbon emissions

• Increases sand quality

• Increases tourism

What is one unintentional impact of sand mining on coastal ecosystems?

• Increases fish population

• Reduces shellfish populations

• Increases vegetation cover

• Decreases wave energy

What was the annual rate of sand extraction at Pakiri Beach from 1994 to 2004?

• 75,000m3/year

• 165,000m3/year

• 200,000m3/year

• 100,000m3/year

What is a consequence of dredging the harbour and constructing a groyne on the spit?

• Increased erosion of the coastline

• Restoration of equilibrium

• Loss of marine biodiversity

• Increased sand supply

What is the estimated long-term retreat of beaches at Mangawhai-Pakiri?

• 20m

• 35m

• 50m

• 10m

What is a risk associated with the Mangawhai sandspit wildlife refuge?

• Increased tourism

• Loss of natural character

• Threat to critical or vulnerable bird species

• Expansion of the sandspit

What was the impact of the 1978 storm on Mangawhai Spit?

• Increased sand supply

• 28m breach of the spit

• Restoration of natural habitat

• Decrease in marine biodiversity