Influence of Macro-Environmental Climatic Factors on Distribution and Productivity of Freshwater Algae

Abstract

Paper represented the new approach to analysis of the global environmental factors -temperature and solar radiation that influenced the algal community species richness, abundance and biomass. Correlation of algal bloom in the continental freshwater reservoirs in Far East and Pacific El Niño temperature phenomenon was revealed. Our analysis demonstrates the close relationship between the global temperature and world ocean level parameters with such an independent global parameter as the rotation and shape of the planetary geoid. The phytoplankton in the large rivers of the Northeastern Eurasia was analyzed over the latitude distribution. It was found that environmental variables in the latitude about 62 degree are represent the critical value of air temperature that annual averaged about -12 C and solar irradiation of about 1100 kWh m 2 . Algal communities in habitat below 62 degree of northern latitude have trend of increasing the role of diatoms whereas cyanobacteria, green, and chrysophyte algae are replaced of diatoms in the northern communities. It was to conclude that algal community structure is defined by macroclimatic factors and can be used for the assessment of global environmental variables change.

Aberrant Forms of Algae and Bioindication of Aquatic Ecosystem State

“…Formation of populations with ugly shells occurred in the same stations as in green alga Ulothrix zonata, below the tailing dump of the "Bor" Combine. We cannot pinpoint the origin and maintenance of a stable teratology of diatom species Fragilaria and Synedra in the Rudnaya River, but this is clearly not only the absence of oxygen, and, probably, the presence of boron and heavy metals, but most likely the influence of a complex of factors, that can be natural climatic factors also [56].…”

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“…Therefore, our calculation of Ssp/Sp Index results can be comparable with other regional floras and reflect the adaptation style of the algal flora as a whole. Ssp/Sp index is increase with altitude of habitats of mentioned regional floras such as in Hindu Cush, Caucasus, South-Tajik depression or Iran that was calculated by us on the base of [20] as 1.19. Figure 3 shows infraspecific variation Index in the mineral water springs…”

Freshwater as a Sustainable Resource and Generator of Secondary Resources in the 21st Century: Stressors, Threats, Risks, Management and Protection Strategies, and Conservation Approaches

“…Since the quality of world fresh water is influenced by a huge number of physical, chemical, biological, and environmental elements and factors, including climatic features [ 38 ] as well as various human activities, it is necessary to determine what the boundaries of the ecosystem are and how the limits of fluctuation in the values of its elements correspond.…”

“…In this regard, there is a need to create regional databases of indicator organisms for the surface waters of each country [ 63 ]. Here, the problem of assessing the transboundary impact and the impact of climatic parameters of each specific country is revealed [ 38 ].…”