This lesson incorporates techniques and experimental designs used by researchers during the Southern Ocean Diatoms PolarTREC expedition and during post-expedition laboratory analysis. This guided inquiry lesson provides students the opportunity to explore photosynthesis and primary productivity using techniques to measure chlorophyll levels.
Objectives
SWBAT:
1. Use models to predict chlorophyll levels in the global oceans
2. Identify
Understanding Physical and Chemical Parameters of Ocean Water Using CTD Profiles
Overview
A focus of the PolarTREC Southern Ocean Diatoms expedition was to collect water samples and physical profile data using oceanographic technology. Oceanographers rely on the real-time data transferred from the water column to the ship-based computers using a CTD sensor. The CTD measures conductivity (salinity), temperature and depth
Small groups of students will establish their own phenology plots for long term study. Students will make a field sketch of a sample plot and turn it into a scale map. The map will accurately place plants the students have identified for tracking phenophases, so that the plots can be monitored long term. Phenology is a vital part of
Powerpoint presentation given at 2012 North Carolina Science Teachers Association professional development conference "Catch the Wave". Co-presenters Nick LaFave and Susan Steiner presented their PolarTREC experiences and information about PolarTREC.
Presented Powerpoint slideshow including two interactive activities for two 90 minutes sessions of North Carolina New Schools Common Practices Symposium. The presentation included activities I've used in the classroom based on the PolarTREC experience, as well as images from the summer at Toolik.
This article describes PolarTREC teacher Nick LaFave's upcoming expedition to Toolik Lake, Alaska where he will be studying wolf spider populations with Duke University researcher, Amanda Koltz.
View sequential still images of thermokarst (thawed permafrost) at Horn Lake in northern Alaska during the summer of 2010. The video was made by researchers studying the responses of Arctic landscapes to permafrost degradation.
This article describes the remarkable efforts of a team of scientists to extract cores from deep under a frozen lake in Siberia, Russia. PolarTREC teacher Tim Martin joined the project which will provide an astounding record of past climates preserved in layers of lake bed sediment. The sediment, withdrawn in cores and shipped to labs in Germany, represents a continuous