Leaf Pack Sampling Techniques

This video tutorial demonstrates how to conduct a leaf pack sample for a river watch survey. It covers finding a suitable leaf pack, setting up the sampling process with a partner, collecting the sample, and washing and inspecting it for macroinvertebrates. The video emphasizes the importance of selecting decaying leaf packs and provides detailed steps for each part of the process.

What is the primary purpose of a leaf pack in a river watch survey?

• To provide habitat for fish

• To measure water temperature

• To filter pollutants from the water

• To allow macroinvertebrates to colonize

What is the first step in the leaf pack sampling process?

• Collecting water samples

• Washing the net

• Finding a suitable leaf pack

• Shaking the leaf pack

Where should the netter stand during the leaf pack sampling process?

• On the riverbank

• Downstream with the net

• Upstream with the partner

• In the middle of the stream

Why is it important to have a partner during the leaf pack sampling?

• To measure water depth

• To record data

• To stand upstream and assist

• To hold the net

Why is it important to choose a decaying leaf pack rather than a green one?

• Green leaves are toxic to macroinvertebrates

• Decaying leaves are more likely to have macroinvertebrates

• Green leaves are too slippery

• Decaying leaves are easier to collect

What should you do if you find a green leaf pack?

• Shake it to see if it changes color

• Use it to measure water flow

• Collect it immediately

• Leave it as it is not suitable for sampling

What is the role of the wash bottle in the leaf pack sampling process?

• To wash away macroinvertebrates from the net

• To store the collected samples

• To clean the leaves

• To measure the water pH

How should the net be positioned when collecting a leaf pack sample?

• On the riverbank

• In the middle of the stream

• Above the water surface

• On the bottom of the stream

After washing the net, what should you look for?

• Water clarity

• Fish swimming in the net

• Leaves stuck in the net

• Macroinvertebrates wriggling around

What is the final step after examining the net for macroinvertebrates?

• Rinse the net and turn it right side in

• Turn the net inside out

• Collect more leaf packs

• Measure the water temperature