Microplastic shape influences fate in vegetated wetlands

Environmental Pollution, Journal Year: 2024, Volume and Issue: 345, P. 123492 - 123492

Published: Feb. 3, 2024

Coastal areas are prone to plastic accumulation due their proximity land based sources. vegetated habitats (e.g., seagrasses, saltmarshes, mangroves) provide a myriad of ecosystem functions, such as erosion protection, habitat refuge, and carbon storage. The biological physical factors that underlie these functions may an additional benefit: trapping marine microplastics. While microplastics occurrence in coastal sediments is well documented, there conflicting evidence on whether the presence vegetation enhances relative bare sites influence microplastic remain understudied. We investigated how structure type influences simulated wetland. Through flume experiment, we measured efficiency branched grassy tested array differ shape, size, polymer. observed did not affect number trapped but location deposition. Microplastic rather than polymer, was dominant factor determining were retained sediment or adhered canopy. Across canopy, microfibre concentrations decreased from leading edge interior which suggests even small-scale, has filtering effect. outcome this study enriches our understanding sink differences among informs where they most likely accumulate within biogenic

Language: Английский

---

Biomonitoring of microplastics, anthropogenic microfibres and glass retroreflective beads by marine macroalgae

Environmental Pollution, Journal Year: 2024, Volume and Issue: 348, P. 123801 - 123801

Published: March 23, 2024

Microplastics and other microscopic debris are a concern in the coastal environment but measurements water column sediment often problematic rely on non-standardised highly variable methodologies. To this end, we explore potential of different species temperate-cold marine macroalgae as passive biomonitors anthropogenic microparticles at three contrasting locations southwest England. Specifically, fronds from samples fucoids Ulva lactuca (n = 9 total, each location) have been sectioned analysed directly under microscope counted subsequently characterised for chemical composition. Microparticles were heterogeneously distributed throughout sections same sample. However, dry weight basis, combined microparticle concentrations sample ranged about 7.5 g-1 to 110 g−1, 0.2 cm−2 0.9 cm−2, given higher semi-enclosed harbour urban beach than protected facing open sea. These values compare with published microplastics microfibres reported regional order 0.1 m-3. Most particles cellulosic (e.g., rayon) petroleum-based (mainly polyester polyethylene terephthalate) fibres plastic fragments also present most samples. Glass retroreflective beads derived road markings up 18 g−1 because its proximity stormwater effluent. adhered smooth parts macroalgal surface some displayed wrapping around edges creases or entrapment by appendages. The practical environmental implications passively capturing significant quantities discussed.

Language: Английский

---

Microplastic trapping efficiency and hydrodynamics in model coral reefs: A physical experimental investigation

Environmental Pollution, Journal Year: 2023, Volume and Issue: 342, P. 123094 - 123094

Published: Dec. 8, 2023

Coastal ecosystems, such as coral reefs, are vulnerable to microplastic pollution input from proximal riverine and shoreline sources. However, deposition, retention, transport processes largely unevaluated, especially in relation hydrodynamics. For the first time, we experimentally investigate retention of biofilmed by branching 3D printed corals (staghorn Acropora genus) under various unidirectional flows (U = {0.15, 0.20, 0.25, 0.30} ms−1) canopy densities (15 48 m−2). These variables found drive trapping efficiency, with 79–98% microplastics retained canopies across experimental duration at high flow velocities 0.25–0.30 ms−1), compared 10–13% for bare bed, denser retaining only 15% more than sparse highest conditions 0.30 ms−1). Three fundamental mechanisms were identified: (a) particle interception, (b) settlement on branches or within coral, (c) accumulation downstream wake region coral. Corresponding hydrodynamics reveal that spatial distribution is modulated energy-dissipative effects due flow-structure interactions reducing in-canopy generating localised turbulence. The wider ecological implications systems discussed light findings, particularly terms concentrations locations plastic accumulation.

Language: Английский

---

Microplastic pollution in marine environments: Exploring sources, sinks, and consequences with a focus on algal interactions

Regional Studies in Marine Science, Journal Year: 2023, Volume and Issue: 68, P. 103270 - 103270

Published: Nov. 3, 2023

Language: Английский

---

Different Effects of Polyethylene Microplastic and Benzophenone-3 Additive on Interspecific Competition of Daphnia Magna and Daphnia Pulex

Published: Jan. 1, 2025

Language: Английский

---

Microplastics – A major contaminant in marine macro algal population: Review

Marine Environmental Research, Journal Year: 2023, Volume and Issue: 193, P. 106281 - 106281

Published: Nov. 23, 2023

Language: Английский

---

The effect of interspecific and intraspecific diversity on microplastic ingestion in two co-occurring mussel species in South Africa

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 196, P. 115649 - 115649

Published: Oct. 19, 2023

Interspecific and intraspecific diversity are essential components of biodiversity with far-reaching implications for ecosystem function service provision. Importantly, genotypic phenotypic variation within a species can affect responses to anthropogenic pressures more than interspecific diversity. We investigated the effects on microplastic ingestion by two coexisting mussel in South Africa, Mytilus galloprovincialis Perna perna, latter occurring as genetic lineages. found significantly higher abundance M. (0.54 ± 0.56 MP items g-1WW) P. perna (0.16 0.21 g-1WW), but no difference between Microbeads were predominant (76 % 99 galloprovincialis) polyethylene prevalent polymer. differences varied across locations, suggesting diverse sources contamination. suggest that be species-specific even organisms coexist play similar functional roles ecosystems.

Language: Английский

---

The Neglected Role of Intraspecific Variation in Plastic Pollution Research

Anthropocene Science, Journal Year: 2023, Volume and Issue: 2(2), P. 141 - 147

Published: July 3, 2023

The predominant focus of initial research endeavours investigating the impacts ongoing climate change on biodiversity has been studying effects species as primary unit measurement. However, over last decade, numerous studies have taught us that neglecting intraspecific (genetic and/or phenotypic) diversity limits our understanding human activities life Earth. Intraspecific is a critical component ecological systems, providing foundation for adaptation, stability, productivity, and long-term persistence ecosystems. Evidence demonstrated consideration variation below level an absolute prerequisite comprehensive anthropogenic pressure, likely consequences wider ecosystems efficient management strategies. Plastic litter rapidly emerged worldwide threat to global biodiversity. Critically, date, akin phases research, main emphasis primarily examining plastics principal metric assessment. Studies how, or what extent, plastic pollution affects are lagging. In this perspective piece, we argue that, by overlooking role in new, ever growing, may be oversimplified underestimated.

Language: Английский

---

Intraspecific genetic lineages of a marine mussel show behavioural divergence when exposed to microplastic leachates

Environmental Pollution, Journal Year: 2023, Volume and Issue: 340, P. 122779 - 122779

Published: Oct. 18, 2023

Worldwide, microplastic pollution has numerous negative implications for marine biota, exacerbating the effects of other forms global anthropogenic disturbance. Mounting evidence shows that microplastics (MPs) not only cause physical damage through their ingestion, but also act as vectors hazardous compounds by leaching absorbed and adsorbed chemicals. Research on plastic has, however, largely assumed species respond uniformly, while ignoring intraspecific diversity (i.e., variation within a single species). We investigated leachates derived from factory-fresh (virgin) beached behavioural responses two genetic lineages Mediterranean mussel Mytilus galloprovincialis. Through laboratory experiments, we found during exposure to (beached MPLs), Atlantic specimens moved significantly less than individuals in terms both (i) proportion responding movement (ii) net gross distances crawled. In contrast, no significant differences were observed behaviour either adults or recruits when exposed MPLs virgin (virgin MPLs). Additionally, reception cues three amino acids (L-cysteine, proline L-leucine) at increasing concentrations (10-5 M 10-3 charcoal-filtered seawater) was tested electrophysiological analysis using mussels control seawater. response L-cysteine (regardless treatment) 10-4 (in MPLs) 10-5 L-leucine. Our study suggests may prompt different pollution, potentially triggered local adaptation physiological variability between lineages. work highlights importance assessing variation, especially environmental sentinel this level could modulate pollution.

Language: Английский

---

Intraspecific variations in oyster (Magallana gigas) ploidy does not affect physiological responses to microplastic pollution

Chemosphere, Journal Year: 2024, Volume and Issue: 364, P. 143206 - 143206

Published: Aug. 28, 2024

Recent advances in genetic manipulation such as triploid breeding and artificial selection, have rapidly emerged valuable hatchery methodologies for enhancing seafood stocks. The Pacific oyster Magallana gigas is a leading aquaculture species worldwide key ecosystem engineer that has received particular attention this field of science. In light the growing recognition ecological effects intraspecific variation, polyploids provide opportunity to assess whether diversity affects physiological responses environmental stressors. While diploid oysters climate change been extensively investigated, research on their sensitivity pollution remains scarce. Here, we genotypic (i.e., ploidy) variation within microplastic pollution. We show M. similar clearance rates ingest amounts microplastics under laboratory-controlled condition. addition, they exhibited heart after prolonged exposure leachates. Our findings suggest variations ploidy does not affect However, regardless ploidy, our work highlights significant adverse leachates rate provides evidence ingestion laboratory.

Language: Английский

---