What are example of ecological lichens?

Answer 1

Rhizocarpon, Rinsodina are first colonizers in xerosere.

Rhizocarpon, Rinsodina etc., are the colonizers in the xerosere. On the bare rocks spores are of these lichens (algae+fungi symbiotic association) partners are deposited from distant sources by wind, small ormanisms etc. These are the common species of crustose lichens, which colonize on the bare rocks. These begin the slow process of rock disintegration. Particles of rocks and dead organic matter of lichens accumulate on the rocks surface. It provides conditions, suitable for the growth of higher forms of plants. Thank.

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Answer 2

Connor Abernathy

Some examples of ecological lichens include:

Reindeer lichen (Cladonia spp.)
British soldier lichen (Cladonia cristatella)
Pixie cup lichen (Cladonia pyxidata)
Old man's beard lichen (Usnea spp.)
Lung lichen (Lobaria pulmonaria)

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.