Writings and videos about science activities with an emphasis on environmental science and energy measurement

Browsing Archive: July, 2014

New Edition Excerpts Posted

Posted by Antonio Chaves on Tuesday, July 22, 2014, In : modified lab procedures 
I am in the process of adding finishing touches to the second edition of the lab manual. To give you some idea of what it looks like, I have made some excerpts available. Some of them will be removed in a few weeks because I do not want students downloading answers from the instructor's guide.
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Feed Conversion in Mealworms

Posted by Antonio Chaves on Saturday, July 12, 2014, In : new lab procedure 
Some months ago I walked into a pet store and saw a glass tank with mealworms eating dry cat food. Since dry cat food comes in nuggets that allows you to easily recover the leftovers this gave me an idea for new activity. The rule of thumb for productivity/energy recovery up each link of the trophic pyramid is around 10%. The biomass recovery I got with with my mealworms was around 20% (based on dry weight). It is higher than the rule of thumb because I was raising them during their period of...
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About this blog

This blog was originally created in January 2013 to serve as a means for providing updates on science activities from the environmental science lab manual Ecology, Development, and Sustainability. I have now expanded its purpose to include other items of interest to science teachers. 

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