Communities of aquatic organisms in the system of ecological monitoring of streams at the Vostochny Cosmodrome (Russia)

Abstract

The current data on the ecological state of streams at the launch site of the Vostochny Cosmodrome with the use of biological indicators are presented. Recommendations on the surface water biomonitoring of the cosmodrome and the booster rocket drop zones are given. It is shown that the system of biological monitoring of the cosmodrome, as a part of the Roscosmos environmental monitoring, should be coordinated with the Roshydromet monitoring.

Hydrophysical researches of Manzherok Lake water after dredging

“…The primary hydro-optical characteristic -the spectral index of light attenuation ε (λ) was calculated by the formula: (1) where L is the length of the cuvette, T = I / I0 is transparency in relative units, I, I0 are the intensities of transmitted and incident light, respectively, λ is the wavelength of light. The absolute error of the value ε(λ) is due to the error in measuring the transmission coefficient using a spectrophotometer and the error in determining the length of the cuvette.The maximum absolute measurement error of the light attenuation index was about 0.5 m-1.…”

“…The most complete retrospective and current state of the characteristics of Lake Manzherokskoye are given in [1][2][3][4][5][6][7][8][9][10].…”

“…In 2017-2018, dredging works were carried out in the central part of Lake Manzherokskoye to increase the depth by removing bottom sediments from the source of secondary pollution of water masses. The peculiarity of the water balance of this lake consists in a significant proportion of underground nutrition, which has significantly decreased during silting of the bottom [1]. However, the clearing of the central part of the lake from bottom silts (sapropels) did not fully solve the problem of its ecological rehabilitation [2].…”

Macrozoobenthos of Lakes Beloe and Kolyvanskoe (Northwestern Altai) and the main ecological factors of its formation

“…Benthic organisms meet many requirements for bioindicators, including: ubiquitous occurrence, sufficiently high abundance, relatively large size, easy collection and processing, a combination of being confined to a biotope with a certain mobility, and a sufficiently long life span to accumulate pollutants over a long period. In the conditions of climate change and anthropogenic impact, it is especially important to study the composition and structure of macroinvertebrate communities in foothill lakes, since it is the best bioindicator of chronic pollution of water bodies [5].…”