Evaluation of algal chlorophyll and nutrient relations and the N:P ratios along with trophic status and light regime in 60 Korea reservoirs

Mamun,; Kwon, Seokcheol; Kim, Jeong-Eun; An, Kwang-Guk

doi:10.1016/j.scitotenv.2020.140451

Cited by 57 publications

(30 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to our present research, high percentages of macroalgae extract in medium culture (75% and 100% of Ulvarigida; 100% of Fucusspiralis) were found to demonstrate negative effect. Mamun et al (2020) is strengthened our findings. From the empirical model analysis, they indicated that Total Phosphate is the key regulating factor for algal growth, rather than Total Nitrogen.…”

Section: Resultssupporting

confidence: 84%

See 1 more Smart Citation

Improving Production, Chlorophyll a and Carotenoids Contents of Gracilaria sp. with Liquid Organic Fertilizer from Alginate Waste

et al. 2021

View full text Add to dashboard Cite

Chlorophyll is a photosynthetic pigment, used in the food sector as a natural dye in food. Carotenoids is used in the health sector to prevent several disease in humans. The production and pigment contents are influenced by nutrient availability. The aim of this study was to increase the production of chlorophyll a and carotenoids contents in Gracilaria sp. Seaweed obtained from Demak aquaculture ponds, then cultivated in aquarium for 28 days.Alginate from Sargassum sp. waste fertilizer was prepared by adding some compounds, fermented by commercial Saccharomyces cerevisiae. Five different treatments (FB (basal formulation: 75 g alginate waste + 22.5mL molase + 7.5 g S. cerevisiae + 250 mL aquadest)), FBL (basal formulation+100% Lamtoro leaves), FBLU (basal formulation+50%Lamtoro leaves+50% carapace shrimp waste), FBU (Basal formulation + 100% carapace shrimp waste) and control-without fertilizer) was applied. Analysis of pigments was determined using the spectrophotometric method. The research design was CRD with 4 treatments and a control. Data were analyzed using Kruskal-Wallis statistical analysis. The result showed that fertilization in culture media could increase the production (DW) and pigment contents. The highest levels of dry weight, chlorophyll a and carotenoids (P<0.05) were resulted from FBLU ie. 6.58 ± 0.07g dry weight; 5.47 mg.L-1 and 0.16 µmol.L-1.The application of organic fertilizer from alginate extract waste to Gracilaria sp. culture media had a significant effect towards growth, dry weight, chlorophyll a and carotenoids pigments content. This inexpensive fertilizer expected to be the solution of green and zero waste management which provide the enviromentally friendly fertilizer.

show abstract

Section: Resultssupporting

confidence: 84%

“…Fertilization with elements of N and K is able to produce carotenoids that are higher than other fertilizer variations. According to the Mamun et al (2020), the C: N: P: Mg ratio plays a role in the formation of carotenoids. Carotenoids levels in each treatment had a linear relationship with nutrient content in fertilizers.…”

Section: Resultsmentioning

confidence: 99%

Improving Production, Chlorophyll a and Carotenoids Contents of Gracilaria sp. with Liquid Organic Fertilizer from Alginate Waste

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The findings showed the nutrient loadings from watersheds caused by extreme rainfall events that increased the algal CHL-a growth [21,[54][55][56]. The increasing TSS levels, BOD, TP, and CHL-a during the flood years declined, indicating intensive rainfall mediated dilution [20,46,57,58].…”

Section: Role Of Monsoon and Water Chemistry Variabilitymentioning

confidence: 96%

“…We performed the conditional plotting using the R program, and the results showed that the TP concentrations better explained the algal growth (CHL-a) in the temperate reservoir (Yongdam) than that of TN (Figure 4). This strongly suggested that the reservoir is firmly a P-limited ecosystem [20]. Moreover, conditional plotting has been used to identify limiting nutrients in aquatic systems [46,61].…”

Section: Conditional Plottingmentioning

confidence: 99%

Seasonal and Long-Term Connections between Trophic Status, Sestonic Chlorophyll, Nutrients, Organic Matter, and Monsoon Rainfall in a Multipurpose Reservoir

Jargal

Atique

Mamun

et al. 2021

Water

Self Cite

View full text Add to dashboard Cite

Due to rapid eutrophication, sustainable water quality management and supply are essential in drinking water sources and aquatic biota in large reservoirs. We evaluated the potentially crucial factors influencing the algal chlorophyll (CHL-a), nutrients, and the links between the rainfall and other vital elements in a large multipurpose reservoir (Yongdam Reservoir) during 2013–2019. We developed the empirical models on algal CHL-a, total phosphorus (TP), total nitrogen (TN), and TN:TP’s ambient ratios considering the maneuvering influence of Asian monsoons. The intensive rainfall during the monsoon months strongly impacted the nutrient regime and other vital factors. The seasonal patterns of algal CHL-a varied in response to the nutrient contents (TN, TP), suspended solids, and ambient N:P ratios along the longitudinal gradient. The conditional plot analysis, empirical modeling, and observations supported an overall P-limitation scenario, as was evident from the magnitude of N:P ratios (R2 = 0.36, F = 24.9, p < 0.001). Furthermore, the reservoir’s trophic status alluded to the larger particles and blue-green algae during the monsoon and postmonsoon months. The correlation analysis, Mann–Kendall trend test, and principal component analysis illustrated compelling links between CHL-a, TP, and rainfall regime. The outcomes suggested the reservoir was primarily controlled by phosphorus limitation, with an increasing CHL-a tendency along with nitrogen dilution. However, a slight decline in phosphorus was also detected. The Yongdam Reservoir is under the threat of recurrent eutrophication events that could jeopardize this vital drinking water facility due to increasing agricultural and anthropic activities.

show abstract

“…In the South Korean reservoirs, inter-relations between physical, chemical and biological factors including total nitrogen, total phosphorus, total suspended solids, Secchi disk depth and for lake eutrophication management (Zou et al, 2020). The relationships between trophic states and their driving factors were investigated such as determination of the spatial and temporal variations in trophic state and identify potential causes for these variations in 60 Korean reservoirs (Mamun et al, 2020), reservoir trophic states varied with environmental and water quality variables (Liu et al, 2017), the differences in algae functional group characteristics in the different water bodies in the region were identified water temperature and nutritional states (Lu et al, 2018), relations between variations in the lake bacterioplankton abundance and the lake trophic state (Adamovich et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Assessment of Relationships between Chlorophyll a and Water Quality in South Korea Reservoirs Relating Summer Monsoon

Dung¹

2020

VNJHM

View full text Add to dashboard Cite

Variations of chlorophyll a in relation with freshwater quality in Korean reservoirs were investigated during the period of 1992-2006. This study compared assessed total nitrogen (TN), total phosphorus (TP), total suspended solids (TSS), Secchi depth (SD) and phytoplankton biomass (Chlorophyll a (Chl)) relating to pre-monsoon, monsoon and post-monsoon in South Korea reservoirs. Linear relationships were observed between log-transformed Chl and logtransformed TN, TP, TSS, SD and applied for all study sites to examine relationship of these factors in South Korea reservoirs. The results demonstrated that phytoplankton biomass responded to nitrogen and phosphorus enrichment and was also differently and remarkably related to TSS, SD in Korean reservoirs during pre-monsoon, monsoon and post-monsoon.

show abstract

Evaluation of algal chlorophyll and nutrient relations and the N:P ratios along with trophic status and light regime in 60 Korea reservoirs

Cited by 57 publications

References 41 publications

Improving Production, Chlorophyll a and Carotenoids Contents of Gracilaria sp. with Liquid Organic Fertilizer from Alginate Waste

Improving Production, Chlorophyll a and Carotenoids Contents of Gracilaria sp. with Liquid Organic Fertilizer from Alginate Waste

Seasonal and Long-Term Connections between Trophic Status, Sestonic Chlorophyll, Nutrients, Organic Matter, and Monsoon Rainfall in a Multipurpose Reservoir

Assessment of Relationships between Chlorophyll a and Water Quality in South Korea Reservoirs Relating Summer Monsoon

Contact Info

Product

Resources

About