ECOLOGICAL FOOTPRINTS. By Ellen Murray Rosedale Heights School of the Arts, TDSB firstname.lastname@example.org For OSEE 2010 http://www.breathingearth.net/. Why teach about Ecological Footprints (EF)? . It’s a way to personalize scientific data
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By Ellen Murray
Rosedale Heights School of the Arts, TDSB
For OSEE 2010
“Ecological footprints are an accounting tool that enables us to estimate the resource consumption and waste assimilation requirements of a defined human population in terms of a biologically productive land area.”
Adapted from “Our Ecological Footprint” by
Mathis Wackernagel and Bill Rees (1995)
Biologically Productive Land
Deserts, Ice Caps and Barren Land
1 hectare = 100 m x 100 m
1 hectare = about 1.3 soccer field
Some good websites include:
The first, the Living Planet Index, measures biodiversity, based on trends in more than 3,600 populations of 1,300 vertebrate species around the world. In all, data for 695 terrestrial, 344 freshwater and 274 marine species were analyzed. Terrestrial species declined by 31 per cent, freshwater species by 28 per cent, and marine species by 27 per cent.