Increment Borer and Tree Core Sampling

The video tutorial takes place in the Auckland Islands, focusing on the use of tree rings to study past climate conditions. The Dracophilum tree species is highlighted for its potential to provide climate data. The process of using an increment borer to extract tree core samples is demonstrated, emphasizing that this method does not harm the tree. The tutorial provides a detailed, step-by-step guide on how to properly take a core sample, ensuring accurate data collection for climate research.

What is the primary purpose of studying the Dracophilum tree species in the Auckland Islands?

• To learn about past climate conditions

• To predict future climate changes

• To understand the current climate conditions

• To study the biodiversity of the region

How do tree rings help in understanding past climates?

• They grow faster in colder climates

• They vary in width depending on climate conditions

• They contain fossilized insects

• They change color based on temperature

What is an increment borer primarily used for?

• Counting the number of leaves

• Identifying tree species

• Extracting core samples from trees

• Measuring tree height

What is the diameter of the steel tube used in the increment borer?

• 5 millimeters

• 20 millimeters

• 10 millimeters

• 15 millimeters

Why does the increment borer not harm the tree?

• The tree is immune to physical damage

• The hole is too small to cause significant damage

• It uses a chemical to heal the tree

• It only extracts dead wood

What is the first step in using the increment borer?

• Checking the distance with a spatula

• Eyeballing the center of the tree

• Turning it without jiggling

• Pressing it into the tree

What should be done after the increment borer reaches the center of the tree?

• Remove the borer immediately

• Check the distance with a spatula

• Leave it in the tree for a day

• Turn it back a turn

What is the purpose of the spatula in the increment borer process?

• To clean the borer

• To mark the tree

• To measure the tree's height

• To check the distance of the core

What indicates that the core sample is good?

• The distance checked is perfect

• It is perfectly straight

• It is longer than expected

• It has a unique color

What is the final step in extracting the core sample?

• Measuring the core's diameter

• Leaving the core in the tree

• Winding the borer back a turn and pulling it out

• Cutting the core into pieces