Pond-bottom decomposition of leaf litters canopied by free-floating vegetation

Zhang, Yalin; Li, Hongbin; Xu, Li; Pan, Xu; Wen-bing, LI; Liu, Jian; Jiang, Yueping; Song, Yue; Dong, Ming

doi:10.1007/s11356-019-04145-x

Cited by 4 publications

(4 citation statements)

References 70 publications

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“…these values were above the permissible limit by [20] which is 3-5mg/L, although the values were below the recommended value (20mg/L) by [21]. The variation could be attributed to the use of oxygen by micro-organisms for the decomposition of macrophytes in the sediment [33]. The decaying of aquatic macrophytes also leads to a decrease or increase in the dissolved oxygen level in the interstitial water [34].…”

Section: Amnicolamentioning

confidence: 74%

Minerals and Trace Elements Content of Selected Shellfish from Opuro-ama Waterfront: An Impacted Tidal Creek in Rivers State, Nigeria

Chris¹,

Nkeeh²,

Oghenetekevwe³

2022

IJAES

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In this study, the content of essential minerals, copper (Cu), iron (Fe), manganese (Mn), calcium (Ca), and sodium (Na) in the edible parts of Tympanotonus fuscatus, Thais coronata, Crassostrea gasar, Cardisoma guanhumi and Callinectes amnicola from Opuro-ama creeks, River’s state were analyzed using Atomic Absorption Spectrophotometer and descriptive statistical analyses of variance were done using SPSS and significant means were separated using the Duncan multiple range test at 0.05. High Cu content was found in the T. coronata (9.66mg/g) while the lowest was observed in C. amnicola (0.54mg/g). Fe was higher in C. gasar (37.8mg/g) and the lowest in T. fuscatus (6.78mg/g). The concentration of Manganese was highest in C. guanhumi (144.8mg/g) and least T. fuscatus in (15.9mg/g). C. guanhumi recorded the highest (225.1mg/g) Ca content while the least was observed in T. fuscatus (55.8mg/g). T. coronata recorded the highest (2.11mg/g) Na content while the least was found in T. fuscatus (0.22mg/g). Ca was the highest mineral observed in all five shellfish, and the least was Sodium (Ca >Mn.>Fe>Cu>Na). The Physico-chemical parameters such as Temperature (°C), pH, Salinity (ppt), DO (Mgl-1), BOD (Mgl-1) and Conductivity (µS/ cm) observed during the study were all within the acceptable limits of the World Health Organization (WHO), Department of Petroleum Resources (DPR) and Federal Environmental Protection Agency (FEPA). The five shellfish species from the Opuro-ama creeks were shown to be good sources of nutrients at various levels, therefore might be a useful alternative for other materials for animal feed formulation

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Section: Amnicolamentioning

confidence: 74%

Minerals and Trace Elements Content of Selected Shellfish from Opuro-ama Waterfront: An Impacted Tidal Creek in Rivers State, Nigeria

Chris¹,

Nkeeh²,

Oghenetekevwe³

2022

IJAES

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“…The leaf litter materials used for the experiment were from three riparian species with different life‐forms and leaf functional traits (Zhang et al, ), that is, an evergreen tree species ( Cinnamomum camphora (L.) Presl.) with high leaf carbon content and low SLA, a deciduous tree species ( Diospyros kaki Thunb.)…”

Section: Methodsmentioning

confidence: 99%

“…with high SLA, low thickness, and leaf carbon content. These species are dominant in the terrestrial habitats around the ponds, and their leaf litter often reaches the ponds and remains on the free‐floating vegetation before it sinks to the bottom of the pond (Zhang et al, ). Due to their phenological differences, freshly fallen leaves were collected from D. kaki in November 2015, C. camphora in April 2016, and P. propinqua in May 2016.…”

Section: Methodsmentioning

confidence: 99%

Riparian leaf litter decomposition on pond bottom after a retention on floating vegetation

Zhang

Wei-jun

Junpeng

et al. 2019

Ecology and Evolution

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Allochthonous (e.g., riparian) plant litter is among the organic matter resources that are important for wetland ecosystems. A compact canopy of free‐floating vegetation on the water surface may allow for riparian litter to remain on it for a period of time before sinking to the bottom. Thus, we hypothesized that canopy of free‐floating vegetation may slow decomposition processes in wetlands. To test the hypothesis that the retention of riparian leaf litter on the free‐floating vegetation in wetlands affects their subsequent decomposition on the bottom of wetlands, a 50‐day in situ decomposition experiment was performed in a wetland pond in subtropical China, in which litter bags of single species with fine (0.5 mm) or coarse (2.0 mm) mesh sizes were placed on free‐floating vegetation (dominated by Eichhornia crassipes, Lemna minor, and Salvinia molesta) for 25 days and then moved to the pond bottom for another 25 days or remained on the pond bottom for 50 days. The leaf litter was collected from three riparian species, that is, Cinnamomum camphora, Diospyros kaki, and Phyllostachys propinqua. The retention of riparian leaf litter on free‐floating vegetation had significant negative effect on the carbon loss, marginal negative effects on the mass loss, and no effect on the nitrogen loss from leaf litter, partially supporting the hypothesis. Similarly, the mass and carbon losses from leaf litter decomposing on the pond bottom for the first 25 days of the experiment were greater than those from the litter decomposing on free‐floating vegetation. Our results highlight that in wetlands, free‐floating vegetation could play a vital role in litter decomposition, which is linked to the regulation of nutrient cycling in ecosystems.

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“…So, it could be used in phytoremediation of high nutrient water bodies (Ting et al, 2018). But, once E. crassipes was established in water bodies, it hardly was eradicated (Zhang et al, 2019). Previous studies showed that it was difficult to obtain accurate data on E. crassipes density and prevalence.…”

Section: Introductionmentioning

confidence: 99%

Responses of submerged macrophytes Vallisneria natans and epiphytic biofilm to floating plants Eichhornia crassipes in eutrophic water

Zhang

Zhang³

et al. 2021

Water Environment Research

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The degeneration of submerged macrophytes and the invasion of Eichhornia crassipes (E. crassipes) destroyed the balance of aquatic ecosystems environments. In this study, responses of Vallisneria natans (V. natans) and the leaf‐epiphytic biofilms to E. crassipes were analyzed to provide a technical scheme for V. natans restoration and E. crassipes control in eutrophic water. The results showed that a significant improvement of water quality achieved in 1100 ind·m−2 E. crassipes density group and TN removal rate reached 63.53%. The presence of E. crassipes changed the morphological characteristics of V. natans, which stimulated the adaptive mechanisms via promotion of shoot height and root length. Concentrations of the antioxidant enzymes, peroxidase, superoxide dismutase, and catalase in the V. natans leaves remained stable. But E. crassipes greatly increased the microbial diversity on V. natans leave biofilms. Furthermore, the greatest richness in bacterial community diversity was observed at 700, 1100, and 1200 ind·m−2 E. crassipes densities in heatmap, which was beneficial to the stability of the water ecological environment. These results showed that the combination of V. natans with E. crassipes of 1100 ind m−2 providing more favorable conditions for the growth and restoration of submerged macrophytes and improve the water quality. Practitioner Points The responses of submerged macrophytes to floating plants were studied. The optimal density of Eichhornia crassipes was 1100 ind m−2. The biofilm microbial community changed in response to Eichhornia crassipes.

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Pond-bottom decomposition of leaf litters canopied by free-floating vegetation

Cited by 4 publications

References 70 publications

Minerals and Trace Elements Content of Selected Shellfish from Opuro-ama Waterfront: An Impacted Tidal Creek in Rivers State, Nigeria

Minerals and Trace Elements Content of Selected Shellfish from Opuro-ama Waterfront: An Impacted Tidal Creek in Rivers State, Nigeria

Riparian leaf litter decomposition on pond bottom after a retention on floating vegetation

Responses of submerged macrophytes Vallisneria natans and epiphytic biofilm to floating plants Eichhornia crassipes in eutrophic water

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