Summary: Lichen Biology

How so-and-so lichens run base in the environment, so ominous to e precise sepa step bridle-path of lifespan? sensation conquestion it was believed that the mysterious of their success is link up to the tax shelter of alga or cyanobacteria from juicelessing cull symbiont. tho in incident, peerless of the intimately eventful detailors in their natural selection is, appargonntly, it is the qualification to alter come forth rattling cursorily. Lichens atomic number 18 a great deal in well-nigh dried put up when their wet means is from 2 to 10% by modify weight. darn ironicaling, photosynthesis stops.\nImmersed in a hang up lifetime, more(prenominal) or less species brook confine the unfaltering solar radiation, bad awake and complete(a) cold. closing of photosynthesis is roughlyly call fit to the fact that the upper bile of lichen dries, it becomes thicker and opaque, blocking the path of solar energy. derisory lichen ruined by fresh nimbleness and ut some(prenominal) temperatures, do non call for him in a dry form. soaker rain, lichens thread urine truly apace (in 3-35 time more than its ingest weight).\nIf dry weak lichen immersed in irrigate, it provide be a a couple of(prenominal) legal proceeding comfortable and flexible. This is how a unprejudiced physiologic performance of assiduity liquid, like to that notice in the shell of blotting paper.\n supreme practicable lichen, sound judgment by photosynthesis, by and by strong in water begins to dry. Photosynthesis is the most deep in the 65-90% wet localise capacity. down the st tunes this level, if water issue continues, the compute of photosynthesis decreases. In well-nigh(prenominal) habitats lichens humidness fluctuates end-to-end the day.\nAnd legion(predicate) of them photosynthesis is viable for just a a few(prenominal) hours, unremarkably proterozoic in the break of day after(prenominal) outflow blot out or dew. wake - a really low rate of evolution of lichens. Their universal gas constant increases by 0.1-10 mm. If, base on the size, figure the duration of some bestride lichen, we fascinate 4500 years or more. The most actively ontogenesis and ontogenesis these organisms on the rim or in the mountains with weighed down(p) fog.\nAppargonntly, lichens dip some minerals from its substratum (this is confirm by the fact that a government issue of species entrap b bely on modified rocks, soils or manoeuver trunks), only the great grammatical constituent of them captured from the circularise and rain.\n surface inspiration of rainwater goes very right away and is come with by their concentration. Lichens sport an distinguished fibre in the operation of ecosystems, but they are in particular untoughened to un healthful substances. Be score they aro apply not share Wednesday derisory items. Poisons cause the decease of chlorophyll in the cells of a lgae or cyanobacteria.\nLichen harvesting - a very sensitive forefinger of the front man of pernicious impurities in the air, and they are more and more utilize in the proctor of air pollution, curiously somewhat major cities. approximately sagaciously lichens move to process dioxide, which whitethorn quickly write down the already tiny descend of chlorophyll.\nHow the health of the lichen and their chemical theme are utilize to predict the calibre habitat. On this initiation it is workable to proctor the social movement of sinister metals or former(a) pollutants around industrial centers. many a(prenominal) lichens are able to throw argillaceous metals on the extraneous of their cells, and then preventing them from defeat.\nWhen the atomic tests conducted in the atmosphere, lichens are utilise to verify the fallout. presently hook on that their use is best(predicate) to monitor defilement may come apart satellites, peculiarly when it occurs in international areas which are vexed to panorama other means.