Recovery of mycorrhizal associations on Mount St. Helens.

This work has studied the recovery of mycorrhizal associations on Mount St. Helens since the eruption in 1980. Mycorrhizal associations are symbioses between plants and fungi localized on the roots of plants. The fungi provide much of the nutrients utilized by the plants and the plants provide carbohydrates to the fungi. The associations on Mount St. Helens range from those plants that form facultative mycorrhizal associations, many herbaceous species including Lupinus lepidus, L., latifolius, and Epilobium angustifolium, to the coniferous trees that are obligately dependent on mycorrhizae.

 

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