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(4 classifications) (41 resources)

Ecological Core Concepts -- Ecosystems

Discipline Specific Core Concepts Classifications
Biogeochemical cycling (16)
Decomposition (7)
Food webs and trophic cascades (10)
Production and respiration (12)

View Resource The influence of Acidification on Ammonification

This experiment examines the influence of moderate (pH 5.5) to extreme (pH 3.5) sulfuric acid-induced acidification on the ability of soil microorganisms to conduct ammonification. Two common soil inhabiting bacteria, Pseudomonas aeruginosa and Bacillus cereus, are analyzed for their ability to perform ammonification given only organic nitrogen and their ammonification ability in an acidic...


Publisher: EcoEd Digital Library

View Resource Where Does Water Go When it Rains?

This short film includes interviews with water researchers and presents basic concepts of hydrologic cycle. Understanding where water goes is important for understanding the environmental effects of many of our activities, from land development to fertilizer use or how will harvesting trees change the likelihood of flooding or landslides.


Publisher: EcoEd Digital Library
View Resource Issues in Ecology, Issue 01: Human Alteration of the Global Nitrogen Cycle: Causes and Consequences

This report presents an overview of how humans have altered the global nitrogen cycle. An introduction to the nitrogen cycle is provided; as well as human induced nitrogen fixation and its impact on the atmosphere, carbon cycle, aquatic and terrestrial ecosystem function, and biodiversity. The importance of nitrogen as a primary building block of life and its role in biological processes is also...


Publisher: EcoEd Digital Library

View Resource Tree Measurement and Carbon Cycling: A Laboratory Exercise

This article discusses the importance of teaching current environmental issues through laboratory exercises. It describes the methods that would be used in a lab exercise involving tree measurement to explain biogeochemical cycling of carbon in the atmosphere.


Publisher: EcoEd Digital Library

View Resource Long-term Response of an Arctic River Community to Phosphorus Fertilization

With this TIEE Data Set, students assess effects of phosphorus addition on algae, moss, mayflies, and arctic grayling fish in the Kuparuk River, in the foothills of the North Slope of Alaska. Data were taken over 15 years at the Arctic Long Term Ecological Research (ARC LTER) site at the Toolik field station. Phosphorus was added to the river as an experiment to study the effects of nutrient...


Publisher: EcoEd Digital Library

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