Relationship between community characteristics of the phytoplankton and environmental factors in Heihe River basin

Yuanyuan, HAO; Sun, Guojun; Lixun, ZHANG; Xueping, GONG; Xu, Shasha; Liu, Huiming; Zhang, Fen

doi:10.18307/2014.0115

Cited by 8 publications

(3 citation statements)

References 17 publications

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“…According to Freshwater algae in China: System, Classification and Ecology [18] , Cell count according to the Technical Specification for Investigation of Freshwater Biological Resources [19] 𝐻 ′ (DB43/T 432-2009). Phytoplankton diversity was analyzed by the Shannon-W iener diversity index, Margalef species richness index (), Pielou evenness index (), and dominance () index𝐷𝐽𝑌 [20] .…”

Section: Average Evaporation Average Rainfallmentioning

confidence: 99%

Characteristics of Phytoplankton Community Structure and Eutrophication in Hasu Sea

2023

erej

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In this paper, we first obtained the data of each water quality monitoring point in May and July of Hassel Sea in 2021, and analyzed the spatial distribution of each element of total phosphorus (TP), total nitrogen (TN), transparency (SD), high manganese index (CODmn) and chlorophyll a (Chl. a) in the data, and then used the integrated trophic state index method and algal species quotient method to evaluate the trophic state of the lake. The results of the integrated trophic state index method and the algal species quotient method were then used to assess the lake's trophic status. The results of the integrated trophic state index method showed that the measured value in July was 1.15 times the value in May, in which the points H1, H2, and H3 were moderately eutrophic, H4, H5, and H6 were mildly eutrophic, while the six monitoring points in July were all moderately eutrophic, indicating that the eutrophication in summer was higher than that in spring, and there was a trend of gradual deterioration during the interannual variation, which needed attention and It is necessary to pay attention to and strengthen the management. Comparing the nutrient status index values of each parameter, chlorophyll (Chl. a), transparency (SD), and total phosphorus (TP) play a significant role in the eutrophication degree of Hassel Sea, accounting for 23.94%, 23.05%, and 20.18%, respectively. The evaluation results of the algal species quotient method showed that all monitoring points were heavily eutrophic when the green algae quotient was applied, and the rest of the points were heavily eutrophic when the composite algae quotient was applied, except point H4 which was heavily eutrophic (located in Xianglu area). Comparing the results of the two evaluation methods, it can be found that the results evaluated by applying the algal species quotient method are more serious, indicating that the algae are more sensitive to the response of the eutrophication degree of the lake, and there is a great chance of water bloom disaster in the late stage of Hassel Sea.

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Section: Average Evaporation Average Rainfallmentioning

confidence: 99%

Characteristics of Phytoplankton Community Structure and Eutrophication in Hasu Sea

2023

erej

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“…As a result, the continuity of the river ecosystem has been damaged, and the physicochemical characteristics of the water body, medium transport patterns and cumulative effects along the river have been greatly changed. Because of the population density in the midstream region, the quantity and quality of the water have been primarily affected by industrial and agricultural sewage and excessive development of oases, which have had a series of impacts on the succession of the water environmental system and river ecological health (Feng et al 2001;Chen et al 2004;Hao et al 2014). As a result, many natural oases have disappeared, and the amount of water entering the downstream area has significantly decreased.…”

Section: Introductionmentioning

confidence: 99%

“…A previous study determined the spatial variation in macrobenthic assemblages in the HRB by comparing historical survey results obtained from field investigations and concluded that microbenthic organisms changed greatly over time due to natural environmental variables and human disturbance (Li et al 2001). However, research on long-term variations in the macrobenthic community structure of the HRB is lacking, as most research has focused on the response of zooplankton and phytoplankton community patterns to aquatic ecological health (Li et al 2000;Chen et al 2004;Hao et al 2014;Ning et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Relationships between characteristics of macrobenthic assemblages and environmental variables in the Heihe River Basin, China

Wang

Juan-juan

et al. 2021

Journal of Water Supply: Research and Technology-Aqua

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To clarify the characteristics of macrobenthic assemblages and their response to the aquatic environment in the upper and middle reaches of the Heihe River, water quality, sediments and macrobenthos measurements were conducted in the summers of 2018 and 2019. The results showed that 50 species of macrobenthos were identified, belonging to 3 phyla, 7 classes, 15 orders and 32 families, mainly arthropods (37 species) and mollusks (11 species). Argyroneta aquatica, Chlaznius sp., dragonfly nymphs, Palaemon modestus, Radix auricularia, Cyraulus albus and Suecinea sp. were the dominant species in the whole study region; most of these are pollution-tolerant and moderately tolerant species. The macrobenthos density and biomass ranged from 10 to 577 ind./m2 and from 0.0907 to 50.0562 g/m2, respectively, showing high spatial heterogeneity. Predators were the main functional feeding group. One-way analysis of variance clarified that Margalef's index and the Shannon–Wiener index differed significantly among the spatial areas (P < 0.05). Canonical correspondence analysis showed that the spatial heterogeneity of the macrobenthos was affected by the water temperature and the total nitrogen and total phosphorus in sediments (P < 0.05).

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Development of an index based on fish, macroinvertebrates, phytoplankton, and physicochemical properties to assess urban aquatic ecosystems in Jinan, China

Liu

Yin

et al. 2022

River Research & Apps

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Because of the rapid growth in urbanization over recent decades, urban aquatic ecosystems have been subjected to unprecedented threats and challenges. In this study, we visited 48 sites, of which 14 were reservoir sites, in water bodies in Jinan, China, on six occasions in May, August, and October of 2014 and 2015. We sampled fish, macroinvertebrates, and phytoplankton assemblages and physicochemical factors at each site. We used the richness and diversity of fish, macroinvertebrates, and phytoplankton to evaluate the condition of the aquatic ecosystems of the river sites. We also evaluated the water quality of the reservoir sites using the physicochemical factors of the State Environmental Protection Administration of China. We classified the results into five levels—excellent, good, moderate, poor, and bad—with the comprehensive evaluation index (CEI). More than 40% of the sampling sites were in either poor or bad condition. Nearly half of the excellent or good sites were in the south of Jinan. The CEI was significantly different between the reference and impaired sites; it was significantly and positively correlated with the qualitative habitat evaluation index and was significantly and negatively correlated with conductivity, total alkalinity, and ammonia nitrogen.

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Relationship between community characteristics of the phytoplankton and environmental factors in Heihe River basin

Cited by 8 publications

References 17 publications

Characteristics of Phytoplankton Community Structure and Eutrophication in Hasu Sea

Characteristics of Phytoplankton Community Structure and Eutrophication in Hasu Sea

Relationships between characteristics of macrobenthic assemblages and environmental variables in the Heihe River Basin, China

Development of an index based on fish, macroinvertebrates, phytoplankton, and physicochemical properties to assess urban aquatic ecosystems in Jinan, China

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