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Bioindication of aquatic habitats with diatom algae in the Pamir Mountains , Tajikistan
| Content Provider | Semantic Scholar |
|---|---|
| Author | Barinova, Ss |
| Copyright Year | 2018 |
| Abstract | 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 Diversity of algae in Tajikistan has been studied sporadically during the last century. The uppermost part of Tajikistan territory is Pamir where the large regional rivers Panj and Gunt are started. The rivers and streams in Pamir are placed in high mountains and started from glaciers. 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. Rivers and lakes are numerous in Pamir in altitude gradient. Therefore, Pamir is one of high altitude area in Eurasia with close relations to Hindu Kush, Altay, and Himalayas. Its territory have diverse aquatic habitats from clear freshwater large rivers, streams, lakes, to mineral and thermal springs which are occupied by diverse algal communities. Freshwater algae are widely used in ecological assessment of water quality.1 It is very important to know about algal diversity in inland waters because most of algal species can be used as environmental indicators. Usually, diatom algae represent about one–half of species richness in the well–studied middle–latitudinal regional algal floras.4 The references literature data on Pamir regional algal flora is known before our study from sporadically collected material in period 1930– 1983.5–9 The regular work has been in 2000–2006 by G.R. Jumaeva.10 Our own study of diatoms in thermal and mineral springs is enriched the regional diversity by 134 diatom species (166 with infraspecific taxa).11 We assume that the diversity of this group of algae in Pamir is still far from complete. Altogether 558 taxa of diatom algae are known in Pamir aquatic habitats as a result of references collecting data and our own research.12 So, the list of species and studied waterbodies are representative for ecological characteristic of this highmountain territory. Thus, the aim of our work was to reveal bioindicator species in the full taxa list of diatom algae from different habitats of Pamir and to characterize of water quality on the base of species autecology by bioindication methods. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://medcraveonline.com/MOJES/MOJES-03-00075.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
