Mangawhai-Pakiri coastline

Question 1

location of the coastline

Answer 1

New Zealand

20 km from Mangawhai, a small harbour settlement in the north, to Pakiri, a rural beach community in the south.

North island of New Zealand

In the Auckland region, 50 km from the city, on the Eastern coast

Question 2

Sand Mining - positives

Answer 2

Very coarse and clean which makes it ideal for construction

Auckland makes up for 35% of the country’s economy so construction is needed

Beach replenishment - 2015 saw 2.3 million foreign visitors to Auckland

Question 3

Sand Mining - negatives

Answer 3

75,000 m3/year being mined

closed system so none of it is being replenished

the trenches made to mine the sand are being replenished by the beach’s sand, making the beach flat and wide. this then causes there to be less protection from coastal erosion and has led to dunes being eroded and a loss of vegetation

Question 4

Ways to manage and mitigate the impacts

Answer 4

Groynes have been implemented - not enough to combat the effects of dredging

McCallum brothers have invested in equipment which helps water clarity, low emission engines, electric pumps, and other equipment which minimise air and noise pollution

Save our Sands movement - campaigning to maintain the coastline and stop the dredging