Examples for Discussion

Example 1

• Problem with forest regeneration in one fire-affected location in California

Example 2

• Problem with agricultural productivity and effects on neighboring forests related to their solution response.

Mexico

• Soils are very alkaline• Crops have low productivity• Total analysis of soils do not show

deficiency but leaf analysis show P deficiency – why???

• Available P shows deficiency• Farmers are very poor in this Oaxaca

region of Mexico• How can they increase crop productivity?

Example 3

• Problem with erosion in Iceland due to over-harvesting of birch and also grazing by sheep and one of their solutions.

Before Viking Settlement 75% vegetated, 25% mountain birchToday less than 25% vegetated, 1% mountain birch

Erosion fronts 125,000 km

LupineSiberian Larch

Protected for 100 yearsEastern Iceland

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