A cloud forest, also called a water forest, primas forest, or tropical montane cloud forest, is a generally tropical or subtropical, evergreen, montane, moist forest characterized by a persistent, frequent or seasonal low-level cloud cover, usually at the canopy level, formally described in the International Cloud Atlas (2017) as silvagenitus.[1][2] Cloud forests often exhibit an abundance of mosses covering the ground and vegetation, in which case they are also referred to as mossy forests. Mossy forests usually develop on the saddles of mountains, where moisture introduced by settling clouds is more effectively retained.
Cloud forests are among the most biodiversity-rich ecosystems in the world, with a large number of species directly or indirectly depending on them.[3]
Other moss forests include black spruce/feathermoss climax forest, with a moderately dense canopy and a forest floor of feathermosses, including Hylocomium splendens, Pleurozium schreberi, and Ptilium crista-castrensis.[4] These weft-form mosses grow in boreal moss forests.[5][6]
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