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| Dr. John Walsby |
Kia ora (hello) as they say here in New Zealand.
Today we had a stimulating and informative lecture from Dr. John Walsby, an renown published marine biologist. He talked about marine life, flora and fauna, geology, birds, animals, the effect of weather patterns on NZ, tectonic plates and how their movement has impacted the earthquake and volcanic activity, and many other topics.
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| A Tui, a native New Zealand bird |
After the lecture we went on a field trip to a beautiful lake created by one of the many volcanoes to hit the area. Along the way Dr. Walsby identified trees and birds that are indigenous to the country.
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| Mt. Victoria, a volcanic mountain |
We visited one of the volcanic mountains where Dr. Walsby identified types of volcanic rocks and talked about how the landscape changed after a volcano erupts.
Because NZ native birds had no natural predators, Dr. Walsby said they had no reason to escape
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| Museum exhibit of the extinct moa |
capture through flight. Consequently, they lost the ability to fly. The moa and kiwi, the national symbol, are two examples. The moa was big. It grew up to 12 feet tall. It is now extinct primarily because the Maori killed and ate them (they
were easy to slaughter since they couldn't fly and fed a lot
of people).
The kiwi, the size of a chicken, also used to be hunted by the Maori. Today the kiwi is protected. Hunting became illegal in the 1950s. There are only about 65,000 of them in the wild.
The island country of New Zealand was formed by the
collision of two tectonic plates – the Australian and Pacific plates. The North
Island, where Auckland is located, is on the Australian Plate. Most of the South
Island is on the Pacific Plate. The 250 earthquakes that New Zealanders can
feel
each year are a result of the seismic activity along the two plates. Thousands
of other earthquakes occur in and around the country that cannot be felt by it
residents.
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| View of downtown Auckland |
Dr.
Walsby told us that Auckland is a mostly low rise city that doesn't have many old buildings. Since the area is prone to earthquakes, building
code changes required
all old buildings to be reinforced with metal structures.
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| Example of steel reinforced glass building |
Rather than
incur the cost of retrofitting existing building, many owners simply razed them. Today there are lots of glass buildings. While not aesthetically or architecturally appealing, the glass, rubber framing and steel are flexible enough to sustain major earthquakes.
I'm sure you're thinking that this must have been a boring day. Quite the contrary. I'm loving this. Dr. Walsby is such a character that he can make any topic interesting and full. I had another wonderful day in NZ.