Modeling the interaction of light and nutrients as factors driving lake eutrophication

Dou, Ming; Ma, Xiaokuan; Zhang, Yan; Zhang, Yongyong; Shi, Yaxin

doi:10.1016/j.ecolmodel.2019.03.015

Cited by 36 publications

(11 citation statements)

References 27 publications

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“…In the case of fertilizers, this applies especially to two components-nitrogen and phosphorus. These nutrients are key in the eutrophication process (Dodds and Smith 2016;Dou et al 2019). It is worth emphasizing that the consumption of mineral fertilizers in Poland is one of the highest in Europe (Piwowar 2018b;Piwowar 2019).…”

Section: Pesticide Use Practices In Poland-results Of Empirical Researchmentioning

confidence: 99%

The use of pesticides in Polish agriculture after integrated pest management (IPM) implementation

Piwowar

2021

Environ Sci Pollut Res

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The aim of the conducted study was to characterize the attitudes and practices of Polish farmers in the area of performing chemical plant protection treatments. A particular attention was paid to identifying the relationship between the direction of changes in the volume of chemical plant protection product consumption and selected attributes of farms. The main time range of the analyses covered the period of 2013–2017. Statistical data and results of representative surveys carried out on a sample of 1101 farms in Poland were used in the research process. Due to the large number of variants of the analysed variables, a multiple correspondence analysis was used, which made it possible to determine the correlation between the examined features (direction of changes in pesticide use relative to the farm area, economic size of the farm and location of the farm). Statistical analysis showed the existence of strong relationships between the physical (1) and economic (2) size of farms and the direction of changes in pesticide consumption ((1) φ2 = 0.0907; (2) φ2 = 0.1141)). According to empirical studies, the reduction of pesticide consumption took place mainly on the smallest farms. The implementation of the integrated plant protection directive has not resulted in significant changes in the form of reduced pesticide use in large-scale field crops. This raises the need to modify the strategy and model of crop protection in large-scale field crops in Poland.

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Section: Pesticide Use Practices In Poland-results Of Empirical Researchmentioning

confidence: 99%

The use of pesticides in Polish agriculture after integrated pest management (IPM) implementation

Piwowar

2021

Environ Sci Pollut Res

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“…Turbidity was negatively correlated with PAR (R 2 = 0.2284, p<0.01) (Figure 7) in our study, which meant that the greater the turbidity is roughly coincided with the lower the PAR in the study. Dou et al (2019) also found that the light attenuation coefficient decreases when the water transparency increases. While turbidity was an important restrictive factor affecting the transparency of water, which can be verified by the logarithmic fitting equation based on the relationship between suspended solids and transparency (Zhang et al, 2003).…”

Section: Mechanism For the Formation Of Nearshore Phytoplankton Bloom...mentioning

confidence: 85%

Different Responses of Chlorophyll a to the Passage of the Tropical Storm Wipha (2019) in the Coastal Waters of the Northern Beibu Gulf

et al. 2022

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Tropical storms (TS) are important drivers of short-term changes and affects the coastal and marine environment. Based on in situ observational data from four locations in the coastal area of the northern Beibu Gulf and satellite data, we analyzed the changes in temperature, salinity, and turbidity during the transit of TS “Wipha” in 2019 and assessed the environmental factors controlling chlorophyll a concenteation (Chl-a) increases in the coastal area. Our results showed that in the coastal area, the growth of phytoplankton after the TS was mainly controlled by the nutrient and light availability. The increased input of freshwater by TS, including direct inputs from rainfall and increased river discharge, reduced the salinity. The decrease in salinity may indicate an increased input of nutrient-rich freshwater at all four stations (nutrients input: S1>S2>S3>S4). Nutrient concentration at S1, S2, and S3 implied by salinity was high, but that at S4 was limited. The shorter recovery time of turbidity after TS indicated the faster improvement of light conditions in this area [recovery time: S4 (2 days)< S1 (3 days)< S3 (5 days)< S2 (10 days)]. The high turbidity associated with poor light penetration was an important factor limiting phytoplankton growth at station 2, with a slow recovery of the turbidity to pre-TS levels. The rapid recovery of the turbidity to the pre-TS levels at S1, S3, and S4 suggested good light conditions soon after the TS, and probably led to a significant increase in Chl-a after the TS ([Chl-a]: S1>S3>S4). The less of an increase of Chl-a at S4 was not only related to nutrient restriction but also related to weak mixing of the water column, while the least significant decrease in the SST at S4 implied that the enhancing mixing after TS was limited.

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“…The same applied to fish predators in the case of zooplankton biomass. However, there are many environmental factors affecting the planktonic biomass in lakes, such as water temperature, land use, and climate change [8,28,[63][64][65]. Environmental change mostly results from anthropogenic impacts [1].…”

Section: Effect Of Water Temperature and Inflow On Phytoplankton And Zooplankton Biomassmentioning

confidence: 99%

A Three-Dimensional Coupled Hydrodynamic-Ecological Modeling to Assess the Planktonic Biomass in a Subalpine Lake

2021

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In this study, a coupled three-dimensional hydrodynamic-ecological model was developed to comprehensively understand the interaction between the hydrodynamics and ecological status of a lake. The coupled model was utilized to explore the hydrodynamics, water quality, and ecological status in an ecologically rich subalpine lake (i.e., Tsuei-Feng Lake (TFL), located in north-central Taiwan). The measured data of water depth, water temperature, water quality, and planktonic biomass were gathered to validate the coupled model. The simulated results with a three-dimensional hydrodynamic and water quality-ecological model reasonably reproduced the variations in observed water depth, water temperature, water quality, and phytoplankton and zooplankton biomass. Sensitivity analysis was implemented to determine the most influential parameter affecting the planktonic biomass. The results of sensitivity analysis indicated that the predation rate on phytoplankton (PRP) significantly affects the phytoplankton biomass, while the basal metabolism rate of zooplankton (BMZ) importantly affects the zooplankton biomass. Furthermore, inflow discharge was the most important environmental factor dominating the phytoplankton and zooplankton biomass of TFL. This implies that the runoff in the catchment area caused by rainfall and the heavy rainfall induced by climate change may affect the planktonic biomass of the lake.

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Modeling the interaction of light and nutrients as factors driving lake eutrophication

Cited by 36 publications

References 27 publications

The use of pesticides in Polish agriculture after integrated pest management (IPM) implementation

The use of pesticides in Polish agriculture after integrated pest management (IPM) implementation

Different Responses of Chlorophyll a to the Passage of the Tropical Storm Wipha (2019) in the Coastal Waters of the Northern Beibu Gulf

A Three-Dimensional Coupled Hydrodynamic-Ecological Modeling to Assess the Planktonic Biomass in a Subalpine Lake

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