A series of photographs showing the widening of a road that then caused an increase in the sediment load in the streams below the road. The photographs show the road and the surrounding tropical rainforest, an example of a stream with increased sediment load, and before and after photographs of pools along the stream (with and without reference points). As of 2012, the system still had an...

Publisher: EcoEd Digital Library

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Three maps showing the location of Trinidad and the location of the tributary and pools included in the folder Degradation of a Tropical Stream. Blue lines represent stream path taken from topographic maps. The black line shows the location of the road. The road continues to the north and crosses over the mountain to influence the head waters of the stream photographed in the tributary...

Publisher: EcoEd Digital Library

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This pair of Landsat images shows the rapid loss of the fabled glaciers and snowfields crowning Mt. Kilimanjaro between 1993 and 2000. With the snow and ice nearly gone, the volcano's crater is visible on the later image. The snowfields were first measured in 1912, and by 2009, 86% of that original extent was gone. Melting has become much more rapid in the last decade. While multiple factors...

Publisher: EcoEd Digital Library

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Students will explore the influences of poultry farming on the ecosystem health of the Chesapeake Bay. A field trip to a poultry farm helps put the case study in context. In a jigsaw design, students first act as expert groups or stakeholders and then are assigned into different synthesis groups. During each step of the process, students utilize social and natural science datasets and discuss...

Publisher: EcoEd Digital Library

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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

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