Plankton community and the relationship with the environment in saline lakes of Onon-Torey plain, Northeastern Mongolia

Abstract

The plankton community of sixteen saline lakes located on Onon-Torey plain (Northeastern Mongolia) during the filling phase and the raising of the water level was investigated in July 2011. Thirty-five taxa of phytoplankton and thirty-one species of zooplankton were found. For phytoplankton, blue-green algae (, ,, , sp., sp.) and green algae (, ,, sp.) were dominant. For zooplankton,, , (Rotifera), ,, (Cladocera),, , (Copepoda) dominated. Mineralization, active hydrogen ratio, dissolved oxygen and water temperature were the main factors influencing the diversity, structure and distribution of plankton organisms in the steppe lakes during low water level. The RDA analysis for phytoplankton and zooplankton from different lakes was carried out for selected two groups which included lakes and a subset related species. The first group is of oligohaline and mesohaline lakes in which mostly green algae, rotifers and copepods inhabit. The second group is of mesohaline and polyhaline lakes with mainly blue-green algae some crustaceans and rotifers inhabiting. High abundance and biomass of , sp. and were observed in lakes with high mineralization, pH and temperature.

Identification and Diversity of Organisms in the Lake Toba Area

“…. Afonina & Tashlykova (2018) stated the temperature of water, minerals, and pH, the main factors for determining the abiotic and biotic components of a waters. Based on the results of the diversity index of living things calculation (figure 1) the waters of Lake Toba are in the condition of mild to moderate conditions.…”

Planktonic Communities in the Torey Lakes (Zabaikalsky Krai) in a Low Water Year

“…In contrast, in Lake Zun-Torey, algal numbers and biomass were lower in the high-temperature season than when the water was cooling. In both lakes, the major contribution to the numbers and biomass of the algae was made by cyanobacteria and green algae, and they were also dominant in other lakes of the same type (Doyle, 1990;Vesnina et al, 2005;Zhao et al, 2005;Afonina, Tashlykova, 2018). In the water bodies of Barun-Torey, the flora of small-celled Chlorococcales were more diverse.…”

Spatial Distribution of Plankton in Response to Ecological Dynamics in Tropical Shallow Lakes: Insight from Lake Malombe, Malawi

“…They are also best known for having the world's richest lacustrine sh fauna and the family of Cichlidae which provide the supreme example of geographically circumscribed vertebrate evolution and a unique comparative series of natural laboratories for evolutionary studies (Coulter, et al, 1986). Despite the ecological importance of these lakes, studies focusing on plankton species distribution and how they are affected by seasonal dynamics of physical-chemical variables are very Several ecological factors such as WT, EC, nutrient loadings, calcium ions, magnesium ions, and hydrological pattern have been considered as critical factors responsible for shaping the biological composition and distribution of plankton in inland lakes (Ha et al 1998;Teubner, 2003;Afonina & Tashlykova, 2018;Hamid et al 2020). In regions where seasonality is very distinct, variation in environmental factors plays a major role in plankton composition and distribution via the in uence of light and nutrients concentrations (Liu et al 2010;Vidal et al 2017).…”