Ladies and gentlemen, I present to you an urban barefoot runner lodging apparent complaints about tree litter to test the limits of your patience.
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One member of the group, however, appeared to interpret the tree litter as some kind of personal affront to the area's community of barefoot runners.
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In the southern Iberian Peninsula, a number of species of the genus Ommatoiulus share a similar range but divide their habitat on type of litter. This close species packing suggests habitat partitioning may operate to limit numbers of O. moreleti in relation to other Ommatoiulus species. O. moreleti prefers tree litter, particularly Quercus spp. (densities stage 7 or older O. moreleti of about 5m²) and Pinus spp.
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The main deposits of the calcium carbonate are at a series of dam-like structures, which are constructed of tufa. The process is assisted by vegetation (which includes tree litter such as twigs and branches), algae and mosses. The flow of the stream is slowed and photosynthesis encourages the removal of the carbon dioxide. The vegetation and debris then become the area for tufa accumulation.
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He received a knighthood in 1980, and retired from Cambridge in 1989. He continued to work, however. He studied the acidification of lakes in his role as Chairman of the Biological Research Advisory Committee of the Central Electricity Generating Board, and concluded that the problem was not caused mainly by acid rain, as was then generally believed, but chiefly by organic acids produced by the decay of moss and of pine tree litter, a problem that was quickly resolved. This finding received insufficient public attention because "it was not what the media wanted to hear".
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Australian pine tree litter completely suppresses germination of understory plants as shown here despite the relative openness of the canopy and ample rainfall (>120 cm/yr) at the location. Allelopathy is a biological phenomenon by which an organism produces one or more biochemicals that influence the germination, growth, survival, and reproduction of other organisms. These biochemicals are known as allelochemicals and can have beneficial (positive allelopathy) or detrimental (negative allelopathy) effects on the target organisms and the community. Allelochemicals are a subset of secondary metabolites, which are not required for metabolism (i.e.
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Leaf litter, mainly White Beech, Gmelina leichhardtii, from Black Bulga State Conservation Area, NSW, Australia Litterfall, plant litter, leaf litter, tree litter, soil litter, or duff, is dead plant material (such as leaves, bark, needles, twigs, and cladodes) that have fallen to the ground. This detritus or dead organic material and its constituent nutrients are added to the top layer of soil, commonly known as the litter layer or O horizon ("O" for "organic"). Litter is an important factor in ecosystem dynamics, as it is indicative of ecological productivity and may be useful in predicting regional nutrient cycling and soil fertility.
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