FOREST ECOLOGY
FOREST SUCCESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The first organisms to colonize a new rocky site are pioneer species such as
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Large trees
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Lichens
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Grasses
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Shrubs
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Explanation:
Detailed explanation-1: -Mosses along with lichens are the first organisms to colonize rocks.
Detailed explanation-2: -One of the most abundant saxicolous lichens is Rhizocarpon geographicum (Fig. 2.3. 1B, yellow), a frequent pioneer colonizer of newly exposed rock surfaces [10].
Detailed explanation-3: -Lichens are considered as pioneer organisms because there are the first to colonize bare rocks, mountains, and cliffs. They corrode rocks and accumulate a certain amount of minerals and organic matter. The plants like mosses and grasses appear later in succession, utilizing the first soil formed by lichens.
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