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Dryas and Alder trees play a crucial role in improving soil conditions for spruce trees. Dryas, a pioneer species, helps stabilize the soil and add organic matter as it decomposes, while Alder trees are nitrogen-fixers that enrich the soil with nitrogen, enhancing its fertility. This combination of improved soil structure and nutrient availability creates a more suitable environment for spruce trees to thrive. Together, they facilitate the transition to a more complex forest ecosystem.

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2mo ago

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