Impacts of low concentrations of nanoplastics on leaf litter decomposition and food quality for detritivores in streams

Seena, Sahadevan; Gutiérrez, Irene B.; Barros, Juliana; Nunes, Cláudia; Marques, João Carlos; Kumar, Santosh; Gonçalves, Ana M.M.

doi:10.1016/j.jhazmat.2022.128320

Cited by 27 publications

(9 citation statements)

References 66 publications

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“…Both laboratory and field experiments have demonstrated that the decomposition process in aquatic environments is mainly driven by the decomposer community and involves invertebrate decomposers, microbial decomposers, and aquatic herbivores. , In addition, environmental disturbances can affect decomposer organisms differently because of differences in tolerance thresholds among species (i.e., interspecific interactions between decomposer species could be altered by various stressors) . Considering that these organisms exhibit different decomposition abilities, investigating the interactions among decomposer species is fundamental to an improved understanding of the causes of variations in AMD (Figure ).…”

Section: Decomposer Organisms and Their Interactions Linked To Amdmentioning

confidence: 99%

“…Fungi and bacteria are key agents of plant litter decomposition in freshwater ecosystems; however, these groups play different roles that facilitate decomposition. The following three main types of fungal decomposition occur in plant litter: (1) Fungi directly convert litter into usable organic matter through mineralization and assimilation, and combine the organic matter into the mycelium and conidium . (2) Fungi accelerate litter decomposition by producing decomposition-related enzymes .…”

Section: Decomposer Organisms and Their Interactions Linked To Amdmentioning

confidence: 99%

“…These plants exhibit short life cycles, and their litter decomposition, termed aquatic macrophyte litter decomposition (AMD), plays a crucial role in driving various ecosystem processes . For example, AMD releases large amounts of organic matter and inorganic nutrients into the freshwater environment, which are then utilized by aquatic heterotrophic and autotrophic communities, respectively. , In addition, AMD affects the physical and chemical properties of the freshwater environment. As one of the main products of aerobic decomposition, carbon dioxide (CO 2 ) can react with water to form carbonic acid, thereby reducing the pH of the water .…”

Section: Introductionmentioning

confidence: 99%

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Effects of Interspecific Interactions on Aquatic Macrophyte Litter Decomposition and Its Influencing Factors

Bao,

Jin,

et al. 2023

ACS EST Water

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Aquatic macrophyte litter decomposition (AMD) is essential for material cycling and energy flow in freshwater ecosystems. This decomposition process encompasses several stages, each demanding the involvement of specific organisms. As interspecific interactions evolve, so does the process of decomposition. However, a comprehensive review specifically highlighting the central roles and intricate dynamics of these interspecific interactions in the decomposition process is notably lacking. Therefore, we herein introduce the stages of AMD and, in conjunction with interspecific relationships, delve into the impact of biotic and abiotic factors and litter quality on AMD. After reviewing the literature, it becomes evident that almost every stage of litter decomposition requires the participation of decomposer organisms. Moreover, the decomposition capabilities vary significantly among different decomposer organisms, with each exhibiting unique sensitivities to environmental shifts. Therefore, understanding these interspecific relationships is pivotal for interpreting the current global shifts in AMD. However, due to monitoring and statistical constraints, previous discussions of AMD have largely focused on a few decomposer organisms with limited exploration of wider decomposer communities. This review emphasizes the need to strengthen research on interspecific relationships within the decomposer community, thereby supporting future investigations into the mechanisms that drive elemental cycling in freshwater ecosystems.

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Section: Decomposer Organisms and Their Interactions Linked To Amdmentioning

confidence: 99%

Section: Decomposer Organisms and Their Interactions Linked To Amdmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Interspecific Interactions on Aquatic Macrophyte Litter Decomposition and Its Influencing Factors

Bao,

Jin,

et al. 2023

ACS EST Water

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“…Nanoplastics are also known to induce toxic effects on aquatic organisms ( Table 1 ). Recent studies have reported size- and concentration-dependent negative effects of different sized (100 nm and 1000 nm) polystyrene nanoplastics on stream fungal communities and associated leaf litter decomposition [ 117 , 118 ]. In mussels ( M. edulis ), a reduction in filtering activity has been reported [ 113 ].…”

Section: Interaction Of Plastics With Aquatic Biotamentioning

confidence: 99%

Plastic Interactions with Pollutants and Consequences to Aquatic Ecosystems: What We Know and What We Do Not Know

2022

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Plastics are a group of synthetic materials made of organic polymers and some additives with special characteristics. Plastics have become part of our daily life due to their many applications and uses. However, inappropriately managed plastic waste has raised concern regarding their ecotoxicological and human health risks in the long term. Due to the non-biodegradable nature of plastics, their waste may take several thousands of years to partially degrade in natural environments. Plastic fragments/particles can be very minute in size and are mistaken easily for prey or food by aquatic organisms (e.g., invertebrates, fishes). The surface properties of plastic particles, including large surface area, functional groups, surface topography, point zero charge, influence the sorption of various contaminants, including heavy metals, oil spills, PAHs, PCBs and DDT. Despite the fact that the number of studies on the biological effects of plastic particles on biota and humans has been increasing in recent years, studies on mixtures of plastics and other chemical contaminants in the aquatic environment are still limited. This review aims to gather information about the main characteristics of plastic particles that allow different types of contaminants to adsorb on their surfaces, the consequences of this adsorption, and the interactions of plastic particles with aquatic biota. Additionally, some missing links and potential solutions are presented to boost more research on this topic and achieve a holistic view on the effects of micro- and nanoplastics to biological systems in aquatic environments. It is urgent to implement measures to deal with plastic pollution that include improving waste management, monitoring key plastic particles, their hotspots, and developing their assessment techniques, using alternative products, determining concentrations of micro- and nanoplastics and the contaminants in freshwater and marine food-species consumed by humans, applying clean-up and remediation strategies, and biodegradation strategies.

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“…Ingoldian fungi are generally associated with clean and well-aerated freshwaters and are believed to be sensitive to pollution [ 9 ]. A decline in aquatic hyphomycetes diversity has been found in streams affected by organic pollution [ 10 ] or heavy metals [ 11 ]. However, the occurrence of several aquatic hyphomycete species in heavily polluted streams has been reported [ 12 – 14 ].…”

Section: Introductionmentioning

confidence: 99%

Seasonal fluctuations and diversity of Ingoldian mycobiota in two water bodies receiving different effluents at Assiut Governorate (Upper Egypt)

et al. 2023

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In the current study, fifty-eight Ingoldain fungal species assignable to forty-one genera were recovered from two water bodies receiving the treated sewage and the effluents of oils and soaps factory at Assiut Governorate (Upper Egypt), of which Anguillospora, Amniculicola, Flagellospora, and Mycocentrospora were the most prevalent genera. The most widespread identified species were Anguillospora furtive, Amniculicola longissima and Flagellospora fusarioides. Forty-three species were identified for the first time in Egypt. The most Ingoldain taxa were estimated for El-Zinnar canal, with the highest recorded taxa in winter. Whereas, the highest dominance of Ingoldian fungi was estimated for the El-Ibrahimia canal. The highest Simpson and Shannon diversity indexes were estimated for El-Zinnar canal samples recording 0.9683 and 3.741, respectively. The poorest water sites with Ingoldian fungi were those exposed directly to either treated sewage or industrial effluents, with which relatively higher values of water conductivity, cations and anions. Water temperature was the main abiotic factor driving the seasonal occurrence of Ingoldian fungi. It is interesting to isolate some Ingoldian fungal species from the stressful water sites receiving the effluents which provide valuable insights regarding their adaptation, predictive and putative role as bioindicators and their potentiality in pollutants degradation, organic decomposition, and transformation of xenobiotic compounds.

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Impacts of low concentrations of nanoplastics on leaf litter decomposition and food quality for detritivores in streams

Cited by 27 publications

References 66 publications

Effects of Interspecific Interactions on Aquatic Macrophyte Litter Decomposition and Its Influencing Factors

Effects of Interspecific Interactions on Aquatic Macrophyte Litter Decomposition and Its Influencing Factors

Plastic Interactions with Pollutants and Consequences to Aquatic Ecosystems: What We Know and What We Do Not Know

Seasonal fluctuations and diversity of Ingoldian mycobiota in two water bodies receiving different effluents at Assiut Governorate (Upper Egypt)

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