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RESOURCE USERS: All items presented on the site are peer-reviewed and accepted for educational use by the Botanical Society of America and/or one of the peer Society partners.
 
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View Resource 4DEE Activity - Estimation of Animal Population Size

This activity is a lab exercise that teaches students how to estimate animal population size. It covers two main techniques: Mark and Recapture (MR) and Capture Per Unit Effort (C/UE). The MR methods include the Lincoln-Petersen and the Schumacher-Eschmeyer approaches. Three approaches for the C/UE method are also included. This exercise is aligned with the Ecological Society of America's Four...

 

Publisher: EcoEd Digital Library

View Resource Effects of Intraspecific Competition on Plants

This lab exercise examines the effect of density on the survival and growth of plant populations. Students examine a variety of parameters in experimental populations of radish plants grown at different densities. They evaluate their findings against the Law of Final Constant Yield and the Reciprocal Yield Law. This exercise follows the Four Dimensional Ecology Education (4DEE) framework...

 

Publisher: EcoEd Digital Library

View Resource How do Lake Ecosystems Change with Increases in Dissolved Organic Matter (DOM) and Reduced Water Clarity? Long-term investigations in lake ecology

Water quality is a significant issue affecting our lakes. While the effects of nutrients on water quality has received much attention, light availability also has strong effects on water quality in lake ecosystems. Light availability has been changing in many lakes with changes in water clarity. Many lakes are undergoing “browning”, where waters become darker and less transparent due to increases...

 

Publisher: EcoEd Digital Library

View Resource A 4DEE Introduction to wetlands: Basic principles, online mapping, and field identification

This lesson focuses on basic principles and identification of wetlands, which are valuable and productive ecosystems in the landscape. It consists of two files that complement each other. This first is a Powerpoint presentation that provides basic principles about wetlands. The second is a set instructions for a laboratory in which students learn how to locate wetlands using online mapping,...

 

Publisher: EcoEd Digital Library

View Resource A Natural Process: Fostering Critical Thinking Through an Ecological Allegory

This exercise develops critical thinking and reading comprehension in an undergraduate ecology course. Students read and discuss an ecologically-based fictional narrative A Natural Process that promotes a critical analysis of the societal context of decision-making and interpretation of observations. The exercise aligns with Vision and Change’s Core Competency #5 Ability to Communicate and...

 

Publisher: EcoEd Digital Library