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Predominantly distributed in the southwestern part of North America, Tomnashia is found mainly on calcareous rock and soil, but it can also grow on non-calcareous rocks. . Some related genera, such as Polycauliona and Igneoplaca, share a similar, relatively limited distribution in coastal southwestern North Ame
Candelariella species are found across the globe, although most commonly described in North America, Asia, and Australia. Species can be found on calcareous and non-calcareous rock, soil, tree bark, mosses, and other lichens.
Calcareous soils are relatively alkaline, in other words they have a high pH.They are characterized by the presence of calcium carbonate in the parent material; the carbonate-ion is a base.
Elsewhere, Leptosols can be found on hard rocks or where erosion has kept pace with soil formation or removed the top of the soil. In the FAO soil classification for the FAO/ UNESCO Soil Map of the World (1974) the Leptosols on calcareous rock were called Rendzinas, those on acid rock were Rankers.
Calcareous speleothems form via carbonate dissolution reactions whereby rainwater reacts with soil CO 2 to create weakly acidic water via the reaction: [3] H 2 O + CO 2 → H 2 CO 3. As the acidic water travels through the calcium carbonate bedrock from the surface to the cave ceiling, it dissolves the bedrock via the reaction: CaCO 3 + H 2 CO ...
Calcareous grassland is an important habitat for insects, particularly butterflies and ants, [2] and is kept at a plagioclimax by grazing animals, usually sheep and sometimes cattle. Rabbits used to play a part but due to the onset of myxomatosis their numbers decreased so dramatically that they no longer have much of a grazing effect.
Acarospora stapfiana typically grows on calcareous rocks, but is also found on sandstone, granitic, and volcanic rocks. [3] It is parasitic on species of the genus Caloplaca (in the broad sense; the genus Caloplaca has been split into many smaller genera), particularly saxicolous (rock-dwelling) species. It has been recorded in various regions ...
Kurkar is the regional name for an aeolian quartz sandstone with carbonate cement, [3] in other words an eolianite or a calcarenite (calcareous sandstone or grainstone), found on the Levantine coast of the Mediterranean Sea in Turkey, [3] Syria, Lebanon, Israel, [4] the Gaza Strip [5] and northern Sinai Peninsula. [6]