Soil decomposers, such as some bacteria and fungi, obtain energy needed for life from dead and decomposing plant and animal remains, known as soil organic matter. Soil organic matter is important to local ecosystems because it affects soil structure, regulates soil moisture and temperature, and provides energy and nutrients to soil organisms. It is also important globally, because
Just as the increase in atmospheric CO2 is causing the global air temperture to rise, the container with the added CO2 will trap more heat inside and will show a higher internal temperature.
Overview
This activity/demonstration can be used directly following lessons on greenhouse gasses and their effects on warming the atmosphere by allowing shortwave UV energy
In this one hour presentation, PolarTREC teacher John Wood explains the scientific work in the Carbon Balance in Warming and Drying Tundra expedition from Healy, Alaska.
The local on-line newsletter interviewed Mr. Wood over the phone and talks about the upcoming expedition to the interior tundra of Alaska and how it will involve the students at Talbert Middle School in Fountain Valley.
Using photos from a variety of websites, including the PolarTREC and SCINI websites, students will identify organisms to phylum and/or class level (e.g. polychaetes, starfish, brittle stars, sponges) and then research the primary foods that these organisms eat. They will then develop a simple food web for these organisms.
The website, Ice Stories, features short interviews and other interesting content live from the polar regions. This weblink has a short video interview of PolarTREC teacher, Craig Beals, while taking part in a PolarTREC expedition with Barry Lefer at Summit, Greenland.
Interview with Dr. Stacy Kim conducted by PolarTREC teacher Mindy Bell. This interview was conducted during the 2007 Antarctic Undersea ROV expedition.
PolarTREC Teacher, Craig Beals, talks about his experiences at Summit, Greenland in this online version of an article published by the Billings Gazette on July 21, 2008.
Few people are familiar with the fascinating stories that Arctic and Antarctic explorers have to share. Students will research an explorer and create a dangling string with key information and highlights from the expedition(s) of that explorer.
Objective
To learn about polar explorers and polar expeditions.
Preparation
Gather needed materials. Have the explorers' information and photos