Decomposition dynamics of two aquatic macrophytes: response of litter interaction with temperature and dissolved oxygen availability

Paccagnella, Yeda Carolina; Bianchini, Irineu

doi:10.1007/s40415-020-00643-2

Cited by 10 publications

(4 citation statements)

References 66 publications

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“…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]. This agrees with [35] who reported that the level of oxygen concentrations can also be the result of the presence of decaying organic matter, resulting in the production of toxic gases such as hydrogen sulphide and methane in the water.…”

Section: Amnicolasupporting

confidence: 77%

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: Amnicolasupporting

confidence: 77%

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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“…18 Also, the decomposition of a single macrophyte species may not mirror the nutrient cycling in aquatic ecosystems since several species co-occur and decay simultaneously in natural ecosystems. 35 Mixed litter can create diverse decomposition habitats and increase resource availability, thus supporting different decomposer groups and causing complex cascade effects that can facilitate nutrient transfer and chemical inhibition during decomposition. 36 Previous findings regarding how litter mixing influences decomposition and nutrient dynamics have been contradictory, showing antagonistic, synergistic, or no effects of mixing.…”

Section: Introductionmentioning

confidence: 99%

“…Different species of macrophytes vary significantly in terms of their physical structure, chemical composition, particle size, and ability to be colonized by microbes during decomposition . Also, the decomposition of a single macrophyte species may not mirror the nutrient cycling in aquatic ecosystems since several species co-occur and decay simultaneously in natural ecosystems . Mixed litter can create diverse decomposition habitats and increase resource availability, thus supporting different decomposer groups and causing complex cascade effects that can facilitate nutrient transfer and chemical inhibition during decomposition .…”

Section: Introductionmentioning

confidence: 99%

Heat Waves Alter Macrophyte-Derived Detrital Nutrients Release under Future Climate Warming Scenarios

et al. 2021

Environ. Sci. Technol.

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In addition to a rise in global air and water mean temperatures, extreme climate events such as heat waves are increasing in frequency, intensity, and duration in many regions of the globe. Developing a mechanistic understanding of the impacts of heat waves on key ecosystem processes and how they differ from just an increase in mean temperatures is therefore of utmost importance for adaptive management against effects of global change. However, little is known about the impact of extreme events on freshwater ecosystem processes, particularly the decomposition of macrophyte detritus. We performed a mesocosm experiment to evaluate the impact of warming and heat waves on macrophyte detrital decomposition, applied as a fixed increment (+4 °C) above ambient and a fluctuating treatment with similar energy input, ranging from 0 to 6 °C above ambient (i.e., simulating heat waves). We showed that both warming and heat waves significantly accelerate dry mass loss of the detritus and carbon (C) release but found no significant differences between the two heated treatments on the effects on detritus dry mass loss and C release amount. This suggests that moderate warming indirectly enhanced macrophyte detritus dry mass loss and C release mainly by the amount of energy input rather than by the way in which warming was provided (i.e., by a fixed increment or in heat waves). However, we found significantly different amounts of nitrogen (N) and phosphorus (P) released between the two warming treatments, and there was an asymmetric response of N and P release patterns to the two warming treatments, possibly due to species-specific responses of decomposers to short-term temperature fluctuations and litter quality. Our results conclude that future climate scenarios can significantly accelerate organic matter decomposition and C, N, and P release from decaying macrophytes, and more importantly, there are asymmetric alterations in macrophyte-derived detrital N and P release dynamic. Therefore, future climate change scenarios could lead to alterations in N/P ratios in the water column via macrophyte decomposition processes and ultimately affect the structure and function of aquatic ecosystems, especially in the plankton community.

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“…At this stage, a large amount of protein will be transported to the pond, and the food conversion rate at this stage is only 60%, and about 40% of the organic matter remains in the pond. Therefore, to decompose these residual substances, a large amount of dissolved oxygen is consumed [47,48]. The root system of aquatic plants can also accumulate or produce a large number of nitrifying microorganisms to enhance the ability of water to degrade pollutants [49].…”

Section: Discussionmentioning

confidence: 99%

Crab-Aquatic Plant System: A Model for Taking Ecological and Economical Care of the Lakes in Yellow River Delta, China

Zhiguo,

Wei,

Wen

et al. 2023

Glob. Environ. Eng.

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The lakes, including reservoirs and ponds in the Yellow River Delta, are characterized by many fragile ecosystems and low economic values. How to take into account both ecology restoration and the economic benefits of the lakes in this region is a complex problem. The Chinese mitten crab (Eriocheir sinensis)-aquatic plant system may have this potential. In this study, we planted aquatic plants, e.g., Elodea nuttallii, Hydrilla verticillate, and Vallisneria natans, with the crabs and investigated geochemical parameters in the ponds. The concentration of NH4+-N was lower than 0.5 mg/L, the pH of the breeding peiponds was 8.274-9.365, and the dissolved oxygen was 3.554-6.048mg/L, which was better than the class II environmental quality standards for surface water. The more extensive specifications ( > 150g/pcs) of the crab growth with the aquatic plants account for >35% of the total production. This model is significant to the ecological utilization of reservoirs in the Yellow River Delta but has low promotion. Therefore, some compulsory breeding policies and breeding standards must be proposed. It is the current ecological needs of the ecological protection Yellow River Delta.

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Decomposition dynamics of two aquatic macrophytes: response of litter interaction with temperature and dissolved oxygen availability

Cited by 10 publications

References 66 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

Heat Waves Alter Macrophyte-Derived Detrital Nutrients Release under Future Climate Warming Scenarios

Crab-Aquatic Plant System: A Model for Taking Ecological and Economical Care of the Lakes in Yellow River Delta, China

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