Effect of river–lake connectivity on ecological stoichiometry of lake and carbon storage status in Eastern Plain, China

Niu, Yong; Ye, Qiaoru; Liu, Qian; Yu, Hui; Tao, Yanru; Wang, Haonan; Niu, Yuan; Luo, Mingke

doi:10.1007/s10653-022-01300-1

Cited by 3 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A fundamental principle of ES is that most animals maintain fixed ratios of crucial elements, such as C, N, and P, in their bodies (Panigrahi et al 2019). This process is known as elemental or stoichiometric homoeostasis, which suggests that elements consumed in excess of an animal's requirement are excreted or respired, while those that are limited in supply are retained (Niu et al 2022). Therefore, the elemental compositions of animals typically act as a proxy for their nutritional demands and play a significant role in predicting the contribution of animals to ecosystem function, such as consumer-mediated nutrient recycling (Vanni et al 2010).…”

Section: C N and P Element Patterns Of Coiliamentioning

confidence: 99%

Ecological stoichiometric pattern and biochemical composition analysis of Coilia species

Duan

Han²,

Lai³

et al. 2023

Preprint

View full text Add to dashboard Cite

Ecological stoichiometry is a scientific discipline that studies the balance of energy and multiple chemical elements in biological systems, and it has been widely applied in fish research. However, there are few studies on fishes with different reproductive modes, such as Coilia, which experience habitat shifts during their life history and serve as important ecological links between marine and freshwater ecosystems. To address this gap, we compared the ecological chemical elements of four Coilia species (C. nasus, C. brachygnathus, C. mystus and C. grayii) to understand their organismal stoichiometry pattern in terms of changes in C, N, and P. The result shows, 1) The C content of Coilia had a wide range and was higher than the general fish, ranging from 40% -70%, while N% and P% were 4%-12% and 0.5%-3%, respectively. 2) Diadromous populations showed wider variations of elemental stoichiometry during migration than non-migration populations, with a higher coefficient of variation of elements and C:N:P than other Coilia species. In particular, the C content of diadromous Coilia nasus was the highest (>60% in the East China Sea) when the fish was ready for spawning migration, while N and P were opposites. Diadromous fish might have evolved a mechanism to store as much lipid as possible in their bodies to meet the energy demand during their long migration journey; 3) There were certain similarities between the biochemical composition and elemental changes. The trends of total fat and C content curves were consistent, with anadromous Coilia nasus storing a large amount of fat before migration to meet their energy needs during long-distance migration. The variation trends of crude protein and N content curve were similar to some degree, with crude protein and total fat having opposite trends, meaning that increased with a decrease in total fat, and vice versa

show abstract

Section: C N and P Element Patterns Of Coiliamentioning

confidence: 99%

Ecological stoichiometric pattern and biochemical composition analysis of Coilia species

Duan

Han²,

Lai³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…However, a water body with poor hydrodynamic conditions is more prone to vertical stratification, which inhibits the vertical transfer of DO and leads to the hypoxia conditions of the rivers [51]. Stratification of rivers is conducive to the sedimentation of suspended particles, causing the accumulation of nutrients such as carbon and nitrogen in disconnected rivers and lakes [52]. Therefore, TDN and DOC The Spearman correlation analysis showed that CH 4 emission was positively correlated with T, EC, and TDN, and negatively correlated with DO, pH, and Chl-a among all the data (Figure 5).…”

Section: Effect Of River-lake Connection On Environmental Factorsmentioning

confidence: 99%

Interconnected River–Lake Project Decreased CO2 and CH4 Emission from Urban Rivers

Wang,

Xv,

et al. 2023

Water

View full text Add to dashboard Cite

Urban riverine networks are hotspots of CO2 and CH4 emissions, due to river impoundment and pollution. The river–lake connection is considered to be an important way to improve the ecological environment of urban rivers; however, its impact on CO2 and CH4 emissions from urban rivers and regulatory mechanisms are still unclear. Rivers and lakes have been studied separately by lots of traditional studies. In this study, we investigated the concentration and emission of CO2 and CH4 from March 2021 to December 2021 in an interconnected river–lake system in Central China. We found that the urban river–lake system was a hotspot of CO2 and CH4 emissions. CO2 and CH4 emissions from urban rivers were much higher than those from the lakes, which are 2.7 times and 11.9 times that of lakes, respectively. The correlation analysis indicated that the spatial variation of CO2 and CH4 emissions was determined by nutrient content. The abundant nutrients promoted microbial growth and consumed dissolved oxygen (DO), thus resulting in high emissions of CO2 and CH4 in the isolated urban rivers (UR). The average CO2 and CH4 emissions of urban rivers are 991.56 and 14.82 mmol m−2 d−1, respectively. The river–lake connection decreased the nutrients of urban rivers connected to lakes (LUR). The moderate nutrients wreaked in situ respiration, exhibiting moderate CO2 emission in the LUR. The average CO2 emission of LUR is 543.49 mmol m−2 d−1. The river–lake connection increased the DO concentrations in the LUR, inhibited methanogenesis, and enhanced CH4 oxidation, reducing CH4 emission from LUR sharply. The average CH4 emission of LUR is 1.26 mmol m−2 d−1. A correlation analysis showed that the seasonal variations of CO2 and CH4 emissions were controlled by DO and T. Hence, the highest emissions of CO2 were observed in the spring and the lowest in the winter, and the CO2 emissions in spring were 10.7 times that in winter. The highest emissions of CH4 were observed in the summer and the lowest in the winter, and the CH4 emissions in summer were 6.6 times those in winter. The connection of urban rivers and lakes changes the environmental factors, thereby varying the production and emission of greenhouse gases. This study advanced the knowledge of the greenhouse gas emission response to the river–lake connection, providing the theoretical basis for greenhouse gas emission reduction from urban rivers.

show abstract

Aging properties and cadmium remediation mechanism of biochar in sediment from phosphorus-rich water

Luo,

Liu,

Tao

et al. 2024

Journal of Hazardous Materials

View full text Add to dashboard Cite

Effect of river–lake connectivity on ecological stoichiometry of lake and carbon storage status in Eastern Plain, China

Cited by 3 publications

References 45 publications

Ecological stoichiometric pattern and biochemical composition analysis of Coilia species

Ecological stoichiometric pattern and biochemical composition analysis of Coilia species

Interconnected River–Lake Project Decreased CO2 and CH4 Emission from Urban Rivers

Aging properties and cadmium remediation mechanism of biochar in sediment from phosphorus-rich water

Contact Info

Product

Resources

About