Abstract
The Aralkum region is a biodiversity centre of halophytes in Middle Asia and Central Asia. Plants have developed various mechanisms to cope with salinity. Often morphological structures are typical for distinct adaptation strategies. Especially halosucculence of stems or leaves, or both, is very common in halophytes strongly adapted to salinity. It is obvious that leaf and stem succulents, such as species from the genera Suaeda, Salicornia and Halocnemum, accumulate considerably more Na+ and Cl– (3,000–5,000 mmol/kg) in comparison with other species. The ionic contents (Na+ and Cl–) of Climacoptera species and of Ofaiston monandrum are lower (2,000–3,500 mmol/kg) in comparison with those of species from Salicornia and Suaeda. Even lower are the values from Petrosimonia triandra. On the other hand, the Na+ and Cl– accumulation of pseudohalophytes such as Euclidium syriacum and Stripagrostis pennata is very low. The invasion of the desiccated seafloor by halophytic species occurs under climatic conditions which are rather variable from year to year. The halophytic species, nevertheless, are on the other hand indicators of the degree of salinity at their site, and thus can be used to monitor salinity. A novel list of indicator values for salinity is presented. All species of the Aralkum flora are listed in Table 12.10 with their ecological salinity indicator value (S value), their halophytic strategy type, and their life form.
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Breckle, SW., Wucherer, W. (2012). Halophytes and Salt Desertification in the Aralkum Area. In: Breckle, SW., Wucherer, W., Dimeyeva, L., Ogar, N. (eds) Aralkum - a Man-Made Desert. Ecological Studies, vol 218. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21117-1_12
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