Abstract
Bioindication of aquatic habitats with diatom algae in the Pamir Mountains, Tajikistan
Highlights
The ecological assessments of environmental variables ranges that can characterize inhabited water body, river basin or even region are progressive and economic methods that implemented for many countries in monitoring, and one of them is algal bioindication.[1]
We studied earlier the influence of habitats altitude on species richness of freshwater algae and find that diversity is increased with increasing altitude[14] up to two thousand meters a.s.l
Our list of diatom species in Pamir is comparable with richness of diatoms in close placed and well studied mountain regional floras such as South–Tajik Depression or Caucasus,[15,16,17] but in the regions where algal diversity study are in initial stage like Kabul River basin in Pakistan[18,19] the Pamir diversity of diatoms looks like much richer
Summary
The ecological assessments of environmental variables ranges that can characterize inhabited water body, river basin or even region are progressive and economic methods that implemented for many countries in monitoring, and one of them is algal bioindication.[1]. The altitude gradient of the Pamir aquatic habitats is represent of about two thousand meters and ranged between 2,000 and 4,000 m above the sea level (a.s.l.) This high mountain area is very rich in thermal and mineral waters, which in a way are unique habitats characterized by a constantly as well as high temperature from 10 ̊С to 86 ̊С, various chemical compositions and saturation by carbon dioxide, nitrogen gase and hydrogen sulphide. It classify as hydrogen sulfide–siliceous, hydrocarbonate–sulphate–calcium– magnesium, chloride–sulfate–calcium–sodium, hydrocarbonate– sulfate–sodium and weak radon–chloride–sulfate.[2,3] In these waters, for many centuries, a special community of algae with a specific species composition and degree of species resistance to peculiarly extreme environmental conditions was formed and developed. The references literature data on Pamir regional algal flora is known before our study from sporadically collected material in period 1930–
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