scholarly journals Artificial Light at Night Alleviates the Negative Effect of Pb on Freshwater Ecosystems

2019 ◽  
Vol 20 (6) ◽  
pp. 1343 ◽  
Author(s):  
Gaozhong Pu ◽  
Danjuan Zeng ◽  
Ling Mo ◽  
Jianxiong Liao ◽  
Xiaxia Chen
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Decomposition Rate ◽  
Aquatic Ecosystems ◽  
Freshwater Ecosystems ◽  
Leaf Litter Decomposition ◽  
Artificial Light ◽  
Light At Night ◽  
Negative Effect ◽  
The Impact

Artificial light at night (ALAN) is an increasing phenomenon worldwide that can cause a series of biological and ecological effects, yet little is known about its potential interaction with other stressors in aquatic ecosystems. Here, we tested whether the impact of lead (Pb) on litter decomposition was altered by ALAN exposure using an indoor microcosm experiment. The results showed that ALAN exposure alone significantly increased leaf litter decomposition, decreased the lignin content of leaf litter, and altered fungal community composition and structure. The decomposition rate was 51% higher in Pb with ALAN exposure treatments than in Pb without ALAN treatments, resulting in increased microbial biomass, β-glucosidase (β-G) activity, and the enhanced correlation between β-G and litter decomposition rate. These results indicate that the negative effect of Pb on leaf litter decomposition in aquatic ecosystems may be alleviated by ALAN. In addition, ALAN exposure also alters the correlation among fungi associated with leaf litter decomposition. In summary, this study expands our understanding of Pb toxicity on litter decomposition in freshwater ecosystems and highlights the importance of considering ALAN when assessing environmental metal pollutions.

Does artificial light at night change the impact of silver nanoparticles on microbial decomposers and leaf litter decomposition in streams?

2019 ◽  
Vol 6 (6) ◽  
pp. 1728-1739 ◽  
Author(s):  
Gaozhong Pu ◽  
Danjuan Zeng ◽  
Ling Mo ◽  
Wen He ◽  
Longwu Zhou ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Leaf Litter ◽  
Litter Decomposition ◽  
Leaf Litter Decomposition ◽  
Artificial Light ◽  
Light At Night ◽  
Negative Effect ◽  
The Impact

The negative effect of AgNP on leaf litter decomposition was alleviated by artificial light at night (ALAN).

scholarly journals Light Pollution Changes the Toxicological Effects of Cadmium on Microbial Community Structure and Function Associated with Leaf Litter Decomposition

2020 ◽  
Vol 21 (2) ◽  
pp. 422 ◽  
Author(s):  
Zhuangzhuang Liu ◽  
Yanna Lv ◽  
Rongcai Ding ◽  
Xiaxia Chen ◽  
Gaozhong Pu
Keyword(s):  
Community Structure ◽  
Leaf Litter ◽  
Litter Decomposition ◽  
Aquatic Ecosystems ◽  
Negative Impact ◽  
Plant Litter ◽  
Leaf Litter Decomposition ◽  
Fungal Community Structure ◽  
Toxicological Effects ◽  
The Impact

Artificial light at night (ALAN/A) can not only alter the behavior and communication of biological organisms, it can also interact with other stressors. Despite its widespread use and the numerous potential ecological effects, little is known about the impact of ALAN on plant litter decomposition under cadmium (Cd) pollution in aquatic ecosystems. In an indoor microcosm experiment, we tested single and combined effects of ALAN and Cd on the activities and community structure of fungi associated with plant litter. The results showed that ALAN and/or Cd can change both water and leaf litter characteristics. ALAN exposure not only altered fungal community structure and their correlations, but also increased the activities of alkaline phosphatase, β-glucosidase, and cellobiohydrolase. The leaf litter decomposition rate was 71% higher in the A-Cd treatment than that in the N-Cd treatment, indicating that the presence of ALAN weakened the negative impact of Cd on leaf litter decomposition. These results suggested that ALAN exposure mitigated the negative effect of Cd on leaf litter decomposition, contributing to the duel effect of ALAN on leaf litter decomposition. Overall, the results expand our understanding of ALAN on the environment and highlight the contribution of ALAN to Cd toxicity in aquatic ecosystems.

scholarly journals Estimation of biomass, carbon stocks and leaf litter decomposition rate in teak Tectona grandis Linn plantations in city forest of Hasanuddin University, Makassar

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Slamet Santosa ◽  
Muhamad Ruslan Umar ◽  
Dody Priosambodo ◽  
Rizki Amalia Puji Santosa
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Decomposition Rate ◽  
Tectona Grandis ◽  
Carbon Stocks ◽  
Leaf Litter Decomposition ◽  
Average Height ◽  
Biomass Carbon ◽  
Litter Decomposition Rate ◽  
Teak Plantations

Teak Tectona grandis Linn is still used as the main product in the form of wood, while other products, especially environmental services have not received much attention. This study analyzed biomass, carbon stocks and decomposition rate of leaf litter in teak plantations in city forest of Hasanuudin University, Makassar. The individual biomass of teak plants is calculated using the allometric equation, Y=0.11x ρ x D2.62. Carbon stocks were analyzed using a formulation, C=0.47xB. The leaf litter decomposition rate is expressed as the ratio of the remaining litter dry weight, with the formulation, X= (A-B)/A. The number of teak plants in 5 sample plots were 239 trees with an average stem diameter of 20.6cm and an average height of 9.02m. Total biomass in 5 sample plots was 51,712.61g. Carbon stock in 5 sample plots was 24,304.92g. Decomposition rate average of leaf litter of 24.4g during 60 days incubation. The existence of teak plantations is able to reduce CO2 in the atmosphere by as much as 89,199.06gCO2 and resulting in a decomposition rate of teak leaf litter 0.4g per day

The effects of ZnO nanoparticles on leaf litter decomposition under natural sunlight

2019 ◽  
Vol 6 (4) ◽  
pp. 1180-1188 ◽  
Author(s):  
Jingjing Du ◽  
Yuyan Zhang ◽  
Mingxiang Qv ◽  
Ke Li ◽  
Xiaoyun Yin ◽  
...  
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Zno Nanoparticles ◽  
Decomposition Rate ◽  
Leaf Litter Decomposition ◽  
Zno Nanoparticle ◽  
Nanoparticle Concentration ◽  
Microcosm Experiment ◽  
Natural Sunlight ◽  
Poplar Leaf

An indoor microcosm experiment showed that decomposition rate of poplar leaf litter was significantly and negatively related to ZnO nanoparticle concentration under natural sunlight.

The Influence of Silviculture Treatments on the Leaf Litter Decomposition Rate of Triploid Populus tomentoza

2014 ◽  
Vol 955-959 ◽  
pp. 3783-3794
Author(s):  
Yue Qin Song ◽  
Zong Qiang Xie
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Decomposition Rate ◽  
Leaf Litter Decomposition ◽  
Nutrient Cycle ◽  
Forest Belt ◽  
Soil Productivity ◽  
Litter Decomposition Rate ◽  
Silvicultural Treatments ◽  
Tree Canopy Cover

Leaf litter decomposition is a fundamental mechanism for self-fertilization in forest ecosystems. Decomposition rate is an important factor in this process. Understanding how silvicultural treatments affect leaf litter decomposition rate can aid in plantation management. In order to reveal the effects of silvicultural treatments on litter decomposition in triploid Populus tomentoza pulp plantations, a litterbag technique was employed in a range of experimental conditions: with/without tree canopy cover (inter or intra forest belts), intercropping, and embedment in the soil. The results showed treatments had varying affects on leaf litter decomposition. The micro-environment created by the forest belt had no significant impact on leaf litter decomposition. The rate of decomposition of embedded leaf litter was significantly higher than litter on the soil surface, indicating that litter buried by tillage or hoeing would promote faster decomposition. Leaf litter decomposition was also enhanced by mixing with cotton (Gossypium sp.) leaf, showing that intercropping sped up the nutrient cycle in triploid P. tomentoza pulp plantations, thereby maintaining and improving soil productivity.

scholarly journals In-Stream Variability of Litter Breakdown and Consequences on Environmental Monitoring

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2246
Author(s):  
Gbenga Emmanuel Omoniyi ◽  
Benjamin Bergerot ◽  
Laura Pellan ◽  
Maëva Delmotte ◽  
Alain Crave ◽  
...  
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Decomposition Rate ◽  
Anthropogenic Impacts ◽  
Local Scale ◽  
Leaf Litter Decomposition ◽  
Litter Breakdown ◽  
Microbial Decomposition ◽  
Mesh Bags ◽  
North Western

Energy derived from leaf litter decomposition fuels food webs in forested streams. However, the natural spatial variability of the decomposition rate of leaf litter and the relative contributions of its drivers are poorly known at the local scale. This study aims to determine the natural in-stream variability of leaf litter decomposition rates in successive riffles and to quantify the factors involved in this key ecosystem process at the local scale. Experiments were conducted on six successive riffles in nine streams in north-western France to monitor the decomposition rate in fine (microbial decomposition, kf) and coarse (total decomposition, kc) mesh bags. We recorded 30 ± 2% (mean ± S.E.) variation in kc among riffles and 43 ± 4% among streams. kf variability was 15 ± 1% among riffles and 20 ± 3% among streams. However, in-stream variability was higher than between-stream variability in four of the nine streams. Streambed roughness was negatively related to decomposition and was the most important factor for both total and microbial decomposition. Our study shows that the natural variability of the decomposition rate resulting from the local morphological conditions of habitats could be very important and should be taken into consideration in studies using leaf litter assays as a bio-indicator of anthropogenic impacts in streams.

scholarly journals Impact of CeO2nanoparticles on the functions of freshwater ecosystems: a microcosm study

2016 ◽  
Vol 3 (4) ◽  
pp. 830-838 ◽  
Author(s):  
Agathe Bour ◽  
Florence Mouchet ◽  
Stéphanie Cadarsi ◽  
Jérôme Silvestre ◽  
Eric Chauvet ◽  
...  
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Freshwater Ecosystems ◽  
Leaf Litter Decomposition ◽  
Microcosm Study

By affecting decomposer organisms, CeO2NPs may affect leaf litter decomposition and impact the functioning of freshwater ecosystems.

scholarly journals The Impact of Water-Soluble Inorganic Ions in Particulate Matter (PM2.5) on Litter Decomposition in Chinese Subtropical Forests

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 238 ◽  
Author(s):  
Yanli Ji ◽  
Qiang Li ◽  
Rumeng Ye ◽  
Kai Tian ◽  
Xingjun Tian
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Nitrogen Loss ◽  
Inorganic Ions ◽  
Water Soluble ◽  
Leaf Litter Decomposition ◽  
Negative Effects ◽  
Promoting Effect ◽  
Water Soluble Inorganic Ions ◽  
The Impact

Although numerous studies have demonstrated the toxic effects of fine particulates less than 2.5 µm (PM2.5) on the health of humans, little information is available on the ecotoxicity of PM2.5. Water-soluble inorganic ions (WSII, including Na+, NH4+, K+, Mg2+, Ca2+, Cl−, NO3−, and SO42−) can compose more than 60% of PM2.5. To better understand the possible impacts of WSII-PM2.5 on leaf litter decomposition, we conducted an experiment in which two leaf litters from oak (Quercus variabilis) and pine (Pinus massoniana) dominant forests in subtropical China were incubated in microcosms containing their respective forest soils and treated with WSII-PM2.5. Our results showed that, after six-months of decomposition, the WSII-PM2.5 treatments inhibited leaf litter decomposition rates, carbon and nitrogen loss, microbial biomass, and enzyme activities in the two forests. In addition, higher WSII-PM2.5 concentration led to stronger negative effects. Comparative analysis showed that the negative effects of WSII-PM2.5 on oak forest were greater than on pine forest, relating to the higher susceptibility to changes of soil microenvironment in oak forests. WSII-PM2.5 may influence decomposition through soil acidification and salinization, which could also cause a sub-lethal depression in soil isopod activity. However, in the first month of decomposition, mass loss of the oak and pine leaf litters under the low concentration WSII-PM2.5 were 21.63% and 35.64% higher than that under the control, respectively. This suggests that transitory low concentrations of WSII-PM2.5 have a promoting effect on decomposition. Long-term PM2.5 exposure, therefore, may have profound ecosystem consequences by altering the balance of ecosystem carbon flux, nutrient cycling, and humus formation in the future.

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