Phytoplankton community structure of Tang-Pu Reservoir: status and ecological assessment in relation to physicochemical variability

Ochieng, Beryl; Mbao, Evance Omondi; Zhang, Zhen; Shi, Liandong; Liu, Qigen

doi:10.1007/s10661-022-09958-x

Cited by 7 publications

(2 citation statements)

References 49 publications

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“…In total, 99 phytoplankton species from 7 systematic ranks, such as Chrysophyta (42), Bacillariophyta (20), Chlorophyta (16), Cyanobacteria (10), Cryptophyta (5), Dinophyta (5), and Haptophyta (1) (Table 2), were detected at the stations in South Baikal and the Irkutsk Reservoir. Note: Green color shows the species that were found in the Irkutsk Reservoir but were absent from South Baikal at the moment of the study.…”

Section: Species Compositionmentioning

confidence: 99%

“…For example, an increase in nutrient levels, such as total N and P in reservoirs during summer (or the dry season in the tropics), tends to shift phytoplankton species structure in favor of Cyanobacteria. Among Cyanobacteria, the growth of Wacklin, Hoffmann & Komárek, Oscillatoria Vaucher ex Gomont [4,16] is observed. Diatom algae, such as Aulacoseira granulata (Ehrenberg) Simonsen, in reservoirs in Vietnam [15], Cameroon [17], Nigeria [18], and Russia [4], and Cyclotella meneghiniana Kützing in some reservoirs in the Volga-Kama Cascade [4], are often considered eutrophication indicators.…”

Section: Introductionmentioning

confidence: 99%

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Environmental Factors Affecting Distribution and Diversity of Phytoplankton in the Irkutsk Reservoir Ecosystem in June 2023

Firsova,

Galachyants,

Bessudova

et al. 2023

Diversity

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Studying correlations between phytoplankton communities and environmental factors is critical for understanding how aquatic ecosystems function. The high sensitivity of phytoplankton to changes in these factors makes it possible to control the state of the ecosystem of water bodies. Artificial lakes often demonstrate increased trophic status, inducing changes in phytoplankton structure. In this paper, we studied phytoplankton in June 2023 (hydrological spring) in two ecosystems, South Baikal and the Irkutsk Reservoir, that are connected by a water course but have different environmental parameters. The gradient of environmental parameters from the lake towards the reservoir revealed peculiarities in the distribution of some microalgae species. Microscopy and statistical analysis showed that water temperature was the most important factor affecting the structure of the communities. The warmer water of the reservoir, in contrast to the lake, demonstrated a twofold increase in species number, abundance, and biomass. Downstream from the reservoir, we observed a succession in the dominating Baikal species complex, its supplementation, and replacement with other species typical of the summer period and Baikal bays. The trophic status of the reservoir during the study may be described as oligotrophic, with local traits of mesotrophicity; its water refers to Class I and Class II and may be qualified as clean.

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Section: Species Compositionmentioning

confidence: 99%