Application of the phase portrait method for analysis of seasonal dynamics in phytoplankton productivity in a large plain reservoir

Минеева, Н. М.; Tereshchenko, V. G.

doi:10.1134/s1995082913010112

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…Primary production and destruction of organic matter in the lake were calculated according to [14][15][16]. The total value of primary production (1 m 2 ) (ΣА) was calculated as Аmax (production maximum value) multiplied by the value of water transparency at the station; the total value of destruction (ΣR) was measured as the values of destruction multiplied by the average depth of the lake [7]. The content of dissolved organic carbon (Corg) was assessed using the ratio of carbon to oxygen: 1 mg O2 = 0.375 mg of Corg [17].…”

Section: Methodsmentioning

confidence: 99%

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Primary production and destruction of organic matter in Lake Arakhley (Eastern Transbaikalia, Russia)

Цыбекмитова

2023

E3S Web of Conf.

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Global climate changes affect water ecosystems. Long-term observations of climatic variables are indicative of cyclic climate changes. The fluctuations result in changes in water levels in lakes, which, in turn, alter primary production processes. Planktonic algae are the main drivers of primary production. This research continues long-term studies on hydroecology of Lake Arakhley. The lake is used for fishery and recreation. This work aims to estimate production and destruction processes in Lake Arakhley during the current transitional period between dry and wet years. To this end, we performed field studies on Lake Arakhley in August from 2016 to 2021, during the season of maximum precipitation, in the central and littoral zones of the lake. Primary production of phytoplankton in water was estimated by the oxygen light and dark bottle method. Sampling was carried out to assess physical and chemical parameters of water using a multiparameter water quality instrument. Lake Arakhley features the low level of mineralization under alkali conditions and relatively stable level of mineralization registered from 2016 to 2021. Macrophytes zone expanded after the massive flooding of the shore in 2021 hence alterating the values of such environmental factors as oxygen levels, total and mineral phosphorus, with destruction prevailing over organic matter production. Depth and transparency however contribute to significant production of organic matter in the lake. The findings can be used as the groundwork for the sustainable management of the lake.

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Section: Methodsmentioning

confidence: 99%

“…Primary production in aquatic environments clearly reflects the impacts of climate change on the ecosystem [6,7]. Primary production and destruction of organic matter are considered not only as the basis for the functioning, but also for the sustainability of water ecosystems [8].…”

Section: Introductionmentioning

confidence: 99%

Primary production and destruction of organic matter in Lake Arakhley (Eastern Transbaikalia, Russia)

Цыбекмитова

2023

E3S Web of Conf.

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“…Dynamic phase portraits developed for analyzing real biological systems not on the basis of mathematical model, but on the empirical data have demonstrated their efficiency for survey of both real communities of hydrobionts Tereshchenko & Strelnikov, 1995, 1997Tereshchenko & Nadirov, 1996;Polovkova et al, 2007;Tereshchenko et al, 2007;Reshetnikov et al, 2011;Dorovskikh et al, 2012Dorovskikh et al, , 2016Mineeva & Tereshchenko, 2013), and real populations (Tereshchenko et al, 2015(Tereshchenko et al, , 2016aTereshchenko & Tereshchenko, 2017;Boznak et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Dynamic phase portrait: New possibilities of detecting changes in populations

2019

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This paper demonstrates the possibilities of detecting changes in populations of animals, based on the analysis of their dynamic phase portrait. This method allowed us to clarify the periodization of the process of naturalization of the Black Sea sprat (Clupeonella cultriventris) in the Rybinsk Reservoir and in detail describe the changes in the main dynamic characteristics of the population. On the example of zander (Sander lucioperca) in Lake Vozhe, the state was observed in which intra-population mechanisms activate which slow the increase in population (distribution of individuals from regions with high density). Use of this method allowed us to describe the new stable state of the population of grayling (Thymallus thymallus), which it entered as a result of increase in sport fishing. The data on time of presence of a population in equilibrium state allowed us to correctly unify the materials used for the analysis of changes in its age group.

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Effect of the Increasing Intensity of Recreational Fishing on the Fish Assemblage of a Watercourse in an Economic Development Zone

2019

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Application of the phase portrait method for analysis of seasonal dynamics in phytoplankton productivity in a large plain reservoir

Cited by 3 publications

References 4 publications

Primary production and destruction of organic matter in Lake Arakhley (Eastern Transbaikalia, Russia)

Primary production and destruction of organic matter in Lake Arakhley (Eastern Transbaikalia, Russia)

Dynamic phase portrait: New possibilities of detecting changes in populations

Effect of the Increasing Intensity of Recreational Fishing on the Fish Assemblage of a Watercourse in an Economic Development Zone

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