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Mohan P, Shahul Hamid F. Charting the microplastic menace: A bibliometric analysis of pollution in Malaysian mangroves and polypropylene bioaccumulation assessment in Anadara granosa. MARINE POLLUTION BULLETIN 2024; 205:116654. [PMID: 38959572 DOI: 10.1016/j.marpolbul.2024.116654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 06/13/2024] [Accepted: 06/23/2024] [Indexed: 07/05/2024]
Abstract
According to a bibliometric analysis, studies on microplastic pollution in Malaysia are still incomprehensive. This study found microplastic contamination in sediment (97 particles/kg) and water (10,963 particles/m3) samples from Malaysian mangroves. Sediment from Matang and water from Kuala Selangor recorded the highest microplastic concentrations at 140 ± 5.13 particles/kg and 13,350 ± 37.95 particles/m3, respectively. Fragmented, blue, rayon and particles of <0.1 mm microplastic were the most abundant in sediment and water. In an experiment of polypropylene microplastic uptakes, Anadara granosa was found to uptake more 0.1 mm fiber particles. The uptake is strongly correlated to the presence of microplastics in sediment and water. The estimated dietary intake (EDI) indicates that a consumer could ingest 507 microplastic particles/year by consuming contaminated A. granosa. Therefore, mitigating measures are crucial to safeguard aquatic systems and humans from microplastic pollution.
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Affiliation(s)
- Priya Mohan
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Fauziah Shahul Hamid
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia; Center for Research in Waste Management, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.
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2
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Diansyah G, Rozirwan, Rahman MA, Nugroho RY, Syakti AD. Dynamics of microplastic abundance under tidal fluctuation in Musi estuary, Indonesia. MARINE POLLUTION BULLETIN 2024; 203:116431. [PMID: 38692003 DOI: 10.1016/j.marpolbul.2024.116431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 04/23/2024] [Accepted: 04/26/2024] [Indexed: 05/03/2024]
Abstract
Tidal dynamics contribute to fluctuations in microplastic abundance (MPs). This is the first study to characterize MPs under the influence of tidal fluctuations in the Musi River Estuary. MPs samples were collected during flood and ebb tides at 10 research stations representing the inner, middle and outer parts of the Musi River Estuary. MPs were extracted to identify the shape, color and size. MP abundances were 467.67 ± 127.84 particles/m3 during flood tide and 723.67 ± 112.05 particles/m3 during ebb tide. The concentration of MPs in the outer zone of the estuary (ocean) was detected to be higher than in the inner zone of the estuary (river). The MPs found were dominated by black color, film shape and size 101-250 μm. A greater abundance of MPs at ebb tide than at flood tide implies that the Musi Estuary's largest source of emissions is discharge from the river.
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Affiliation(s)
- Gusti Diansyah
- Department of Marine Science, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Ogan Ilir 30662, South Sumatra, Indonesia.
| | - Rozirwan
- Department of Marine Science, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Ogan Ilir 30662, South Sumatra, Indonesia
| | - M Akbar Rahman
- Environmental Management Study Program, Graduate Program, Universitas Sriwijaya, Palembang 30139, South Sumatra, Indonesia
| | - Redho Yoga Nugroho
- Environmental Management Study Program, Graduate Program, Universitas Sriwijaya, Palembang 30139, South Sumatra, Indonesia
| | - Agung Dhamar Syakti
- Marine Science and Fisheries Faculty, Raja Ali Haji Maritime University, Tanjung Pinang 29100, Riau Islands, Indonesia
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3
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Li NY, Zhong B, Guo Y, Li XX, Yang Z, He YX. Non-negligible impact of microplastics on wetland ecosystems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 924:171252. [PMID: 38423326 DOI: 10.1016/j.scitotenv.2024.171252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/14/2024] [Accepted: 02/22/2024] [Indexed: 03/02/2024]
Abstract
There has been much concern about microplastic (MP) pollution in marine and soil environments, but attention is gradually shifting towards wetland ecosystems, which are a transitional zone between aquatic and terrestrial ecosystems. This paper comprehensively reviews the sources of MPs in wetland ecosystems, as well as their occurrence characteristics, factors influencing their migration, and their effects on animals, plants, microorganisms, and greenhouse gas (GHG) emissions. It was found that MPs in wetland ecosystems originate mainly from anthropogenic sources (sewage discharge, and agricultural and industrial production) and natural sources (rainfall-runoff, atmospheric deposition, and tidal effects). The most common types and forms of MPs identified in the literature were polyethylene and polypropylene, fibers, and fragments. The migration of MPs in wetlands is influenced by both non-biological factors (the physicochemical properties of MPs, sediment characteristics, and hydrodynamic conditions) and biological factors (the adsorption and growth interception by plant roots, ingestion, and animal excretion). Furthermore, once MPs enter wetland ecosystems, they can impact the resident microorganisms, animals, and plants. They also have a role in global warming because MPs act as unique exogenous carbon sources, and can also influence GHG emissions in wetland ecosystems by affecting the microbial community structure in wetland sediments and abundance of genes associated with GHG emissions. However, further investigation is needed into the influence of MP type, size, and concentration on the GHG emissions in wetlands and the underlying mechanisms. Overall, the accumulation of MPs in wetland ecosystems can have far-reaching consequences for the local ecosystem, human health, and global climate regulation. Understanding the effects of MPs on wetland ecosystems is essential for developing effective management and mitigation strategies to safeguard these valuable and vulnerable environments.
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Affiliation(s)
- Na-Ying Li
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; School of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Bo Zhong
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
| | - Yun Guo
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Xian-Xiang Li
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; School of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China
| | - Zao Yang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Yi-Xin He
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
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4
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Nasir MS, Tahir I, Ali A, Ayub I, Nasir A, Abbas N, Sajjad U, Hamid K. Innovative technologies for removal of micro plastic: A review of recent advances. Heliyon 2024; 10:e25883. [PMID: 38380043 PMCID: PMC10877293 DOI: 10.1016/j.heliyon.2024.e25883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 01/30/2024] [Accepted: 02/05/2024] [Indexed: 02/22/2024] Open
Abstract
Plastics are becoming a pervasive pollutant in every environmental matrix, particularly in the aquatic environment. Due to increased plastic usage and its impact on human and aquatic life, microplastic (MP) pollution has been studied extensively as a global issue. The production of MP has been linked to both consumer and commercial practices. There is a significant amount of MP's that must be removed by wastewater treatment plants before they can be bioaccumulated. Many researchers have recently become interested in the possibility of eliminating MPs in wastewater treatment plants (WWTP). Many studies have analyzed MP's environmental effects, including its emission sources, distribution, and impact on the surrounding environment. The effectiveness of their removal by various wastewater treatment technologies requires a critical review that accounts for all these methods. In this review, we have covered the most useful technologies for the removal of MP during WWTP. The findings of this review should help scientists and policymakers move forward with studies, prototypes, and proposals for significant remediation impact on water quality.
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Affiliation(s)
- Muhammad Salman Nasir
- Department of Structures and Environmental Engineering, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Ifrah Tahir
- Department of Structures and Environmental Engineering, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Ahsan Ali
- Guangdong Technion-Israel Institute of Technology, Shantou, 515063, China
| | - Iqra Ayub
- Department of Energy Systems Engineering, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Abdul Nasir
- Department of Structures and Environmental Engineering, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Naseem Abbas
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, South Korea
| | - Uzair Sajjad
- Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - Khalid Hamid
- Process and Power Research Group, Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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Samuels W, Awe A, Sparks C. Microplastic pollution and risk assessment in surface water and sediments of the Zandvlei Catchment and estuary, Cape Town, South Africa. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:122987. [PMID: 38030107 DOI: 10.1016/j.envpol.2023.122987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 11/01/2023] [Accepted: 11/16/2023] [Indexed: 12/01/2023]
Abstract
Microplastic (MP) (plastic <5 mm) pollution in South Africa is widespread but few studies have been done in catchments and estuaries of the country. The aim of this study was to investigate the abundance, characteristics and risks posed by microplastics in the Zandvlei Catchment and Estuary in Cape Town, South Africa. Water and sediment were sampled between 2019 and 2021, during wet and dry seasons, MPs extracted and identified using microscopy and fourier-transformed infrared spectrophotometry (FTIR) analyses. MP abundances were 70.23 ± 7.36 (standard error) MPs/Kg dw in sediment and 2.62 ± 0.41 MP/L in water samples for the study period. Lower reaches of the catchment and upper reaches of the estuary can be considered sinks for MP contamination as these sites recorded higher MP abundances. MPs were mainly transparent fibres smaller than 0.5 mm. Polyethylene (46%) followed by polypropylene (16%) fibres were the most common polymers recorded. Pollution load indices in MPs were categorised as dangerous in both water and sediment. MP polymer risk indices ranged from moderate in catchment sediment to very high in catchment water. Pollution risk indices were categories as dangerous in water (catchment and sediment) and sediment estuary but low in catchment sediment. Ecological risk assessments hence indicated that polymers in water and sediment were mostly dangerous and poses a threat to the ecological health of both the catchment and estuary studied.
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Affiliation(s)
- Whitney Samuels
- Department of Conservation and Marine Sciences, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Adetunji Awe
- Department of Conservation and Marine Sciences, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Conrad Sparks
- Centre for Sustainable Oceans, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, South Africa.
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6
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Saad D, Ramaremisa G, Ndlovu M, Chauke P, Nikiema J, Chimuka L. Microplastic Abundance and Sources in Surface Water Samples of the Vaal River, South Africa. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2024; 112:23. [PMID: 38180521 PMCID: PMC10769928 DOI: 10.1007/s00128-023-03845-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/06/2023] [Indexed: 01/06/2024]
Abstract
Microplastics (MPs) have emerged as a global environmental concern due to their persistent nature. In South Africa, microplastic research has primarily focused on marine systems. However, recent years have seen a shift in focus to studying MPs in South African freshwaters. In this study, MPs with a minimum size of 0.055 mm in surface water of the Vaal River, South Africa, were reported. MPs were 100% prevalent, with a mean numerical abundance of 0.68 ± 0.64 particles/m3. Small-sized MPs of < 1 mm accounted for the largest proportion. MPs were chemically identified as high-density polyethylene, low-density polyethylene, and polypropylene according to their Raman spectra. The prevalence of fragments (41.6%) and fibers (38.5%) over pellets (8.1%) indicates that microplastics are from secondary sources. The prevalence of polyethylene and polypropylene is consistent with microplastics being from secondary sources. These polymers are commonly used in single-use plastics, packing bags, textiles, and containers. These characteristics are of great concern due to their implications on the bioavailability and toxicological impacts of MPs. Consequently, these properties may pose more hazards to aquatic biota inhabiting the Vaal River.
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Affiliation(s)
- Dalia Saad
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa.
- Department of Chemistry, University of Pretoria, Pretoria, South Africa.
| | - Gibbon Ramaremisa
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Michelle Ndlovu
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Patricia Chauke
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Luke Chimuka
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa
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7
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Talukdar A, Kundu P, Bhattacharjee S, Dey S, Dey A, Biswas JK, Chaudhuri P, Bhattacharya S. Microplastics in mangroves with special reference to Asia: Occurrence, distribution, bioaccumulation and remediation options. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166165. [PMID: 37574065 DOI: 10.1016/j.scitotenv.2023.166165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/15/2023] [Accepted: 08/07/2023] [Indexed: 08/15/2023]
Abstract
Microplastics (MPs) are a new and lesser-known pollutant that has intrigued the interest of scientists all over the world in recent decades. MP (<5mm in size) can enter marine environments such as mangrove forests in a variety of ways, interfering with the health of the environment and organisms. Mangroves are now getting increasingly exposed to microplastic contamination due to their proximity to human activities and their position as critical transitional zones between land and sea. The present study reviews the status of MPs contamination specifically in mangrove ecosystems situated in Asia. Different sources and characteristics of MPs, subsequent deposition of MPs in mangrove water and sediments, bioaccumulation in different organisms are discussed in this context. MP concentrations in sediments and organisms were higher in mangrove forests exposed to fishing, coastal tourism, urban, and industrial wastewater than in pristine areas. The distribution of MPs varies from organism to organism in mangrove ecosystems, and is significantly influenced by their morphometric characteristics, feeding habits, dwelling environment etc. Mangrove plants can accumulate microplastics in their roots, stem and leaves through absorption, adsorption and entrapment helping in reducing abundance of microplastic in the surrounding environment. Several bacterial and fungal species are reported from these mangrove ecosystems, which are capable of degrading MPs. The bioremediation potential of mangrove plants offers an innovative and sustainable approach to mitigate microplastic pollution. Diverse mechanisms of MP biodegradation by mangrove dwelling organisms are discussed in this context. Biotechnological applications can be utilized to explore the genetic potential of the floral and faunal species found in the Asian mangroves. Detailed studies are required to monitor, control, and evaluate MP pollution in sediments and various organisms in mangrove ecosystems in Asia as well as in other parts of the world.
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Affiliation(s)
| | - Pritha Kundu
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Nalanda, Bihar 803116, India
| | - Shrayan Bhattacharjee
- Ecosystem and Ecology Laboratory, Post-graduate Department of Zoology, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata 700118, India
| | - Satarupa Dey
- Department of Botany, Shyampur Siddheswari Mahavidyalaya, Howrah 711301, West Bengal, India
| | - Abhijit Dey
- Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata 700073, West Bengal, India
| | - Jayanta Kumar Biswas
- Enviromicrobiology, Ecotoxicology & Ecotechnology Research Laboratory (3E-MicroToxTech Lab), Department of Ecological Studies, and International Centre for Ecological Engineering, University of Kalyani, Nadia, West Bengal 741235, India
| | - Punarbasu Chaudhuri
- Department of Environmental Science, University of Calcutta, Kolkata 700019, West Bengal, India
| | - Sayan Bhattacharya
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Nalanda, Bihar 803116, India.
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8
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Gomez NCF, Cragg SM, Ghiglione JF, Onda DFL. Accumulation and exposure classifications of plastics in the different coastal habitats in the western Philippine archipelago. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 337:122602. [PMID: 37741539 DOI: 10.1016/j.envpol.2023.122602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 09/19/2023] [Accepted: 09/20/2023] [Indexed: 09/25/2023]
Abstract
Studies consistently ranked the Philippines as one of the top contributors of plastic wastes leaking into the ocean. However, most of these were based on probabilities and estimates due to lack of comprehensive ground-truth data, resulting also in the limited understanding of the contributing factors and drivers of local pollution. This makes it challenging to develop science-driven and locally-contextualized policies and interventions to mitigate the problem. Here, 56 sites from different coastal habitats in the western Philippine archipelago were surveyed for macroplastics standing stock, representing geographic regions with varying demography and economic activities. Clustering of sites revealed three potential influencing factors to plastic accumulation: population density, wind and oceanic transport, and habitat type. Notably, the amount and types of dominant plastics per geographic region varied significantly. Single-use plastics (food packaging and sachets) were the most abundant in sites adjacent to densely populated and highly urbanized areas (Manila Bay and eastern Palawan), while fishing-related materials dominated in less populated and fishing-dominated communities (western Palawan and Bolinao), suggesting the local industries significantly contributing to the mismanaged plastics in the surveyed sites. Meanwhile, isolated areas such as islands were characterized by the abundance of buoyant materials (drinking bottles and hygiene product containers), emphasizing the role of oceanic transport and strong connectivity in the oceans. Exposure assessment also identified single-use and fishing-related plastics to be of "high exposure (Type 4)" due to their high abundance and high occurrence. These increase their chances of encountering and interacting with organisms and habitats, thus, resulting into more potential harm. This study is the first comprehensive work done in western Philippines, and results will help contextualize local pollution, facilitating more effective management and policymaking.
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Affiliation(s)
- Norchel Corcia F Gomez
- Microbial Oceanography Laboratory, The Marine Science Institute, University of the Philippines Diliman, Quezon City, 1101, Philippines
| | - Simon M Cragg
- Institute of Marine Sciences and Centre for Enzyme Innovation, School of Biological Sciences, University of Portsmouth, Portsmouth, United Kingdom
| | - Jean-François Ghiglione
- Centre National de la Recherche Scientifique (CNRS), Sorbonne Université, Laboratoire d'Océanographie Microbienne (LOMIC), UMR 7621, Observatoire Océanologique de Banyuls, Banyuls sur mer, France
| | - Deo Florence L Onda
- Microbial Oceanography Laboratory, The Marine Science Institute, University of the Philippines Diliman, Quezon City, 1101, Philippines; Pag-asa Island Research Station (PIRS), The Marine Science Institute, Pag-asa Island, Kalayaan Island Group, West Philippine Sea, Philippines.
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9
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Johnson J, Peer N, Sershen, Rajkaran A. Microplastic abundance in urban vs. peri-urban mangroves: The feasibility of using invertebrates as biomonitors of microplastic pollution in two mangrove dominated estuaries of southern Africa. MARINE POLLUTION BULLETIN 2023; 196:115657. [PMID: 37864863 DOI: 10.1016/j.marpolbul.2023.115657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/23/2023]
Abstract
Microplastic (MP) prevalence has been well documented, however, knowledge gaps exist for African mangrove forests. This research is the first to compare MP pollution (using FT-IR analysis) in an urban (Durban Bay) and peri-urban (Mngazana Estuary) mangrove forest in South Africa, across different compartments. MP pollution (typology, abundance, and distribution) was quantified in estuarine surface water, sediment and the soft tissue of three keystone species (Austruca occidentalis, Chiromantes eulimene and Cerithidea decollata) in relation to disturbances acting on these systems. MP averages ranged from 99 to 82 MPs/kg sediment, 177 to 76 MPs/L water and 82 to 59 MP/g-1 DW in biota. Overall fibres were the dominant MP type across all compartments. The three invertebrate species exhibited MP bioaccumulation, however, significant differences were observed between MP concentrations in the soft body tissue of invertebrates and abiotic compartments, providing evidence that they are not effective biomonitors of MP pollution.
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Affiliation(s)
- Jaime Johnson
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Robert Sobukwe Way, Bellville, Cape Town 7530, South Africa.
| | - Nasreen Peer
- Department of Botany and Zoology, Stellenbosch University, Natural Sciences Building, Merriman Avenue, Stellenbosch Central, Stellenbosch, 7600, South Africa
| | - Sershen
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Robert Sobukwe Way, Bellville, Cape Town 7530, South Africa
| | - Anusha Rajkaran
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Robert Sobukwe Way, Bellville, Cape Town 7530, South Africa; South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown 6140, South Africa
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10
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Mendes DS, Beasley CR, Silva DNN, Fernandes MEB. Microplastic in mangroves: A worldwide review of contamination in biotic and abiotic matrices. MARINE POLLUTION BULLETIN 2023; 195:115552. [PMID: 37738877 DOI: 10.1016/j.marpolbul.2023.115552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/29/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023]
Abstract
This review presents the spatial distribution (where) and the methods applied (how) in assessing Microplastics (MPs) contamination in sediments, water, and organisms in mangrove areas. We analyzed 53 articles on MPs in Asia, America, and Africa and produced by 359 authors, although very localized, lacking wide-scale coverage of mangrove coasts around the world. The results showed that most of studies provided MP's bulk characteristics (type, size, color, form), along with global gross reserves of MPs in the mangrove compartments. Investigations in mangrove areas are still relatively limited. Therefore, for future research, it is relevant to enhance spatial and temporal sampling of MP contamination and to establish standardized protocols to enable effective comparisons between mangrove areas, rivers, beaches, and coastal seas. In addition, it is crucial to investigate the role of MPs as carriers or vectors of other pollutants.
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Affiliation(s)
- Dayene Santiago Mendes
- Programa de Pós-Graduação em Biologia Ambiental, Instituto de Estudos Costeiros (IECOS) Universidade Federal do Pará (UFPA), Bragança, PA, Brazil; Laboratório de Ecologia de Manguezal (LAMA), Universidade Federal do Pará (UFPA), Bragança, PA, Brazil.
| | - Colin Robert Beasley
- Programa de Pós-Graduação em Biologia Ambiental, Instituto de Estudos Costeiros (IECOS) Universidade Federal do Pará (UFPA), Bragança, PA, Brazil; Laboratório de Conservação da Biodiversidade e das Águas, Campus Bragança, Universidade Federal do Pará (UFPA), Bragança, PA, Brazil.
| | - Daniel Nobre Nunes Silva
- Laboratório de Ciência e Engenharia de Petróleo (LCPetro), Campus Salinópolis, Universidade Federal do Pará (UFPA), Salinópolis, PA, Brazil.
| | - Marcus Emanuel Barroncas Fernandes
- Programa de Pós-Graduação em Biologia Ambiental, Instituto de Estudos Costeiros (IECOS) Universidade Federal do Pará (UFPA), Bragança, PA, Brazil; Laboratório de Ecologia de Manguezal (LAMA), Universidade Federal do Pará (UFPA), Bragança, PA, Brazil.
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11
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Yose P, Thondhlana G, Fraser G. Conceptualizing the socio-cultural impacts of marine plastic pollution on human well-being - A perspective. MARINE POLLUTION BULLETIN 2023; 194:115285. [PMID: 37459770 DOI: 10.1016/j.marpolbul.2023.115285] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/07/2023] [Accepted: 07/09/2023] [Indexed: 09/12/2023]
Abstract
Marine plastic pollution is one of the major environmental problems globally, with adverse impacts on human well-being but socio-cultural impacts remain poorly conceptualized and little understudied. This perspective paper argues for a more nuanced understanding of the socio-cultural dimensions of impacts beyond direct and quantitatively measured impacts. The paper provides a working definition of and a conceptual framework for categorizing the socio-cultural impacts of marine plastic pollution. It also highlights three dimensions of socio-cultural impacts (lifestyle, mental health, and cultural and heritage impacts), and characterizes and suggests ways socio-cultural impacts can be assessed and recognized. The paper is meant to provoke productive debate and policy and management options for addressing the impacts of marine plastic pollution in socially meaningful and equitable ways.
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Affiliation(s)
- Papama Yose
- Department of Environmental Science, Rhodes University, Makhanda 6140, South Africa
| | - Gladman Thondhlana
- Department of Environmental Science, Rhodes University, Makhanda 6140, South Africa.
| | - Gavin Fraser
- Department of Economics and Economic History, Rhodes University, Makhanda 6140, South Africa
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12
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Chen B. Bibliometric analysis and current research in the field of microplastics (MPs) in mangrove. ENVIRONMENT, DEVELOPMENT AND SUSTAINABILITY 2023. [DOI: 10.1007/s10668-023-03481-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 06/06/2023] [Indexed: 09/01/2023]
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13
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Wang Y, Jiao M, Li T, Li R, Liu B. Role of mangrove forest in interception of microplastics (MPs): Challenges, progress, and prospects. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130636. [PMID: 37056008 DOI: 10.1016/j.jhazmat.2022.130636] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/04/2022] [Accepted: 12/18/2022] [Indexed: 06/19/2023]
Abstract
Mangroves receive microplastics (MPs) from terrestrial, marine and atmospheric sources, acting as a huge filter for environmental MPs between land and sea. Due to the high primary production and complex hydrodynamic conditions in mangroves, MPs are extensively intercepted in various ways while flowing through mangroves, leading to a long-standing but fiercely increasing MPs accumulation. However, current researches mainly focused on the occurrence, source and fate of MPs pollution in mangroves, ignoring the role of mangrove forests in the interception of MPs. Our study firstly demonstrates that mangrove ecosystems have significantly greater MPs interception capacity than their surrounding environments. Then, the current status of studies related to the interception of MPs in mangrove ecosystems is comprehensively reviewed, with the main focus on the interception process and mechanisms. At last, the most pressing shortcomings of current research are highlighted regarding the intercepted flux, interception mechanisms, retention time and ecological risks of MPs in mangrove ecosystems and the relevant future perspectives are provided. This review is expected to emphasize the critical role of mangrove forests in the interception of MPs and provide the foundational knowledge for evaluating the MPs interception effect of mangrove forests globally.
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Affiliation(s)
- Yijin Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; School of Marine Sciences, Guangxi University, Nanning 530004, China
| | - Meng Jiao
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; School of Marine Sciences, Guangxi University, Nanning 530004, China
| | - Tiezhu Li
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Ruilong Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
| | - Beibei Liu
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China.
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André-Marie D, Mohammad W, Manon V, Florian MB, Brice M, Hervé P, Thierry W, Stefan K, Laurent S. Environmental and land use controls of microplastic pollution along the gravel-bed Ain River (France) and its "Plastic Valley". WATER RESEARCH 2023; 230:119518. [PMID: 36584661 DOI: 10.1016/j.watres.2022.119518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 12/13/2022] [Accepted: 12/18/2022] [Indexed: 06/17/2023]
Abstract
Understanding microplastic particles (MPs) accumulation and transport along rivers represents a major task due to the complexity and heterogeneity of rivers, and their interactions with their wider corridor. The identification of MPs hotspots and their potential sources is especially challenging in coarse-bed rivers transporting a wide range of particle sizes with a high degree of variability in time and space. This research focuses on the gravel-bed Ain River (Rhône River tributary, France) which is managed by means of various dams and also hosts one of the major plastic production centres in Europe (Oyonnax and Bienne Plastic Valleys). In this research, (i) Geographical Information Systems (GIS) were used to locate plastic factories and to characterise the land use of the Ain River watershed. (ii) On the field, sediment samples were extracted from the hyporheic zone (HZ) of mobile gravel bar heads, while hydro-sedimentary settings were measured in order to describe site conditions. Sampling sites were especially established in downwelling areas (i.e. where the surface water entered the hyporheic zone), upstream and downstream of dams and plastic factories. (iii) After density separation and organic matter digestion of sediment, MPs were characterised with a µFTIR device followed by data processing via the siMPle software. This work highlighted the trapping efficiency of alluvial bars for MPs. The highest MPs concentrations were found along the Plastic Valleys (up to 4400 MPs/kg), while the lower river was less contaminated by MPs. After grain-size correction, a significant breakpoint was identified in the area of the main dams, revealing their major influence on MPs distribution. The variability in MPs concentrations and types suggested a local origin for most of MPs. A particular feature was the dominance of polypropylene (PP) which appears as a critical industrial heritage as the studied region is specialised in the manufacturing of hard plastics. Indeed, multivariate analyses also revealed that MPs concentrations and types were mostly driven by the vicinity of plastic factories and urban areas. This relationship between the land use, the presence of dams and MPs characteristics provides key results for the MPs assessment and the improvement of management issues along coarse-bed rivers.
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Affiliation(s)
- Dendievel André-Marie
- Univ Lyon, Université Lyon 1 Claude Bernard, ENTPE, CNRS, UMR 5023 LEHNA, 3 Rue M. Audin, 69518 Vaulx-en-Velin Cedex, France; Univ Lyon, Université Lyon 1 Claude Bernard, CNRS, UMR 5023 LEHNA, 3 et 6 Rue R. Dubois, bât. Darwin C et Forel, 69662 Villeurbanne Cedex, France.
| | - Wazne Mohammad
- Univ Lyon, Université Lyon 1 Claude Bernard, CNRS, UMR 5023 LEHNA, 3 et 6 Rue R. Dubois, bât. Darwin C et Forel, 69662 Villeurbanne Cedex, France; School of Geography, Earth and Environmental Sciences, University of Birmingham, United Kingdom
| | - Vallier Manon
- Univ Lyon, Université Lyon 1 Claude Bernard, CNRS, UMR 5023 LEHNA, 3 et 6 Rue R. Dubois, bât. Darwin C et Forel, 69662 Villeurbanne Cedex, France
| | - Mermillod-Blondin Florian
- Univ Lyon, Université Lyon 1 Claude Bernard, CNRS, UMR 5023 LEHNA, 3 et 6 Rue R. Dubois, bât. Darwin C et Forel, 69662 Villeurbanne Cedex, France
| | - Mourier Brice
- Univ Lyon, Université Lyon 1 Claude Bernard, ENTPE, CNRS, UMR 5023 LEHNA, 3 Rue M. Audin, 69518 Vaulx-en-Velin Cedex, France
| | - Piégay Hervé
- Univ Lyon, ENS de Lyon, CNRS, UMR 5600 EVS, 18 Rue Chevreul, Cedex 07, 69362 Lyon, France
| | - Winiarski Thierry
- Univ Lyon, Université Lyon 1 Claude Bernard, ENTPE, CNRS, UMR 5023 LEHNA, 3 Rue M. Audin, 69518 Vaulx-en-Velin Cedex, France
| | - Krause Stefan
- Univ Lyon, Université Lyon 1 Claude Bernard, CNRS, UMR 5023 LEHNA, 3 et 6 Rue R. Dubois, bât. Darwin C et Forel, 69662 Villeurbanne Cedex, France; School of Geography, Earth and Environmental Sciences, University of Birmingham, United Kingdom
| | - Simon Laurent
- Univ Lyon, Université Lyon 1 Claude Bernard, CNRS, UMR 5023 LEHNA, 3 et 6 Rue R. Dubois, bât. Darwin C et Forel, 69662 Villeurbanne Cedex, France
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15
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Huang CW, Li YL, Lin C, Bui XT, Vo TDH, Ngo HH. Seasonal influence on pollution index and risk of multiple compositions of microplastics in an urban river. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 859:160021. [PMID: 36356754 DOI: 10.1016/j.scitotenv.2022.160021] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/17/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Emerging contaminant microplastics (MPs) are getting worldwide attention for their ubiquitous occurrence and potential risk to the environment. However, the seasonal influence on freshwater MP pollution remains poorly understood. To better understand and evaluate the riverine MPs in different seasons, this study conducted the risk assessment of MPs in an urban river, Houjin River, during the different seasons. The present study found that the MPs (0.1-5 mm, mostly 0.1-2 mm) were more abundant in the dry season (183.33 ± 128.95 items/m3) compared with the wet season (102.08 ± 45.80 items/m3). Similarly, the mixture of different MPs polymers was more diverse in the dry season. The related pollution indices such as the contamination factor (CF) and pollution load index (PLI) showed that average CF and PLI were 5.15 and 2.10 in the dry season, which significantly decreased to 1.58 and 1.25, respectively, in the wet season (p < 0.05). Additionally, significant difference of the average risk quotient (RQ) was observed, which was 0.037 in the dry season and 0.021 in the wet season (p < 0.05). To sum up, the results of this study indicate the seasonal effects on the pollution and risk of multiple compositions of MPs in the urban river, suggesting higher impacts of riverine MPs pollution in the dry season, as well as the potential increase of MPs, may lead to environmental risk in the future.
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Affiliation(s)
- Chi-Wei Huang
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Yi-Lin Li
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Chitsan Lin
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Ph.D. Program in Maritime Science and Technology, College of Maritime, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
| | - Xuan-Thanh Bui
- Key Laboratory of Advanced Waste Treatment Technology & Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City (VNU-HCM), Linh Trung ward, Ho Chi Minh City 700000, Viet Nam
| | - Thi-Dieu-Hien Vo
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia.
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16
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Birami FA, Keshavarzi B, Moore F, Busquets R, Zafarani SGG, Golshani R, Cheshmvahm H. Microplastics in surface sediments of a highly urbanized wetland. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 314:120276. [PMID: 36180006 DOI: 10.1016/j.envpol.2022.120276] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/19/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
This study investigates the incidence of MPs in surface sediment samples, collected from the Anzali Wetland, Gillan province, North of Iran. This natural habitat receives municipal wastewater effluents and hosts industries and recreational activities that could release plastic to the wetland. There is need for studies to understand MPs pollution in wetlands. A total of 40 superficial sediment samples were taken covering potential pollution hotspots in the wetland. The average level of MPs was 362 ± 327.6 MP/kg: the highest MPs levels were near the outlet of a highly urbanized river (Pirbazar River) (1380 MP/kg), which runs through Rasht city. This was followed by 1255 MP/kg where there was intense fishing, boating and tourism activities in the vicinity of Bandar-e Anzali city. Fibers were the most common type of MPs (80% of the total MPs detected). The MPs polluting the wetland were predominantly white/transparent (42%), and about 40% of them were >1000 μm. Polypropylene (PP) and polyethylene (PE) prevailed in MPs found. MPs were characterized with polarized light microscopy, Raman spectroscopy, Scanning Electron Microscopy coupled with Energy-Dispersive X-ray spectroscopy. Microplastics levels were found to correlate significantly (p > 0.7) with electrical conductivity (EC) and sand-size fraction of the sediments. Coarse-grained sediments presented large capacity to lodge the MPs. This study can be used to establish protection policies in wetlands and newly highlights the opportunity of intercepting MPs in the Anzali Wetland, which are generally >250 μm, before they fragment further.
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Affiliation(s)
- Farideh Amini Birami
- Department of Earth Sciences, College of Science, Shiraz University, 71454, Shiraz, Iran
| | - Behnam Keshavarzi
- Department of Earth Sciences, College of Science, Shiraz University, 71454, Shiraz, Iran.
| | - Farid Moore
- Department of Earth Sciences, College of Science, Shiraz University, 71454, Shiraz, Iran
| | - Rosa Busquets
- School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston Upon Thames, Surrey, KT1 2EE, UK
| | | | - Reza Golshani
- Marine Environment and Wetlands, Department of the Environment, Iran
| | - Hamidreza Cheshmvahm
- Department of Earth Sciences, College of Science, Shiraz University, 71454, Shiraz, Iran
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17
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Chen B. Current status and trends of research on microplastic fugacity characteristics and pollution levels in mangrove wetlands. FRONTIERS IN ENVIRONMENTAL SCIENCE 2022; 10. [DOI: 10.3389/fenvs.2022.1021274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Microplastics have been widely detected in the environment, while mangrove wetlands are considered barriers to land-based plastic transport to the ocean, requiring special attention. However, the current literature is distributed and broad besides limited information on the fate characteristics and pollution levels. This study uses a systematic literature review method to analyze the current research status and future trends. In this study, the literature is summarized and concluded that Characteristics including color, shape, size, polymer chemistry and surface microstructure are the basic information for microplastic research in mangrove wetlands. Size is the key to studying distribution and convergence without international standards. The shape is vital to study its sources and environmental processes. Color affects biological predation and is important information for studying ecological risk. The chemical composition of plastics is the key to studying microplastics’ fingerprint information, source, and sink. The surface microstructure is an important basis for studying adsorption behavior and aging processes. Mangrove microplastic studies in China are mainly on the southern and southeastern coasts, and microplastic pollution is more severe in Fujian, Guangdong, and Guangxi than in Hainan. In contrast, studies on mangrove microplastics abroad are mainly concentrated in Southeast Asia, the Middle East, and South America. Overall, microplastic contamination was detected in the major distribution areas of mangroves worldwide and was correlated with mangrove density and human activities.
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Keerthika K, Padmavathy P, Rani V, Jeyashakila R, Aanand S, Kutty R. Contamination of microplastics, surface morphology and risk assessment in beaches along the Thoothukudi coast, Gulf of Mannar region. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:75525-75538. [PMID: 35657544 DOI: 10.1007/s11356-022-21054-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
Microplastics accumulation on beaches raises a serious concern worldwide. Hence, the present study was conducted with the focus of investigating the abundance, characteristics, risk assessment, surface morphology and elemental composition of microplastics (MPs) in the beach sediments of the Thoothukudi region, situated on the south-east coast of India, Gulf of Mannar region. The MPs abundance ranged between 19 ± 18.62 and 78.55 ± 95.17 items/kg with a mean abundance of 33.82 ± 26.11 items/kg and the spatial distribution of MPs showed insignificant variation. Fragments (59.48%), 0.5-1 mm (43.66%) and blue-coloured MPs (45.61%) were highly predominant in the sediments. Attenuated total reflection - Fourier transform infrared (ATR-FTIR) spectroscopy showed the dominance of polyethylene polymers in sediments (52.26%) and their sources could be attributed to the direct inflow of sewage, recreational and fishing activities and accidental loss. The current study revealed that microplastics (< 5 mm) are ubiquitous along the Thoothukudi coast, posing a serious threat to the marine environment and marine organisms. The ecological risk assessment of MPs in sediments was calculated by adopting 3 models: the polymer hazard index (PHI), pollution load index (PLI) and potential ecological risk assessment (RI). The overall PHIsediments = 698.96 exhibited a hazard level of IV, which was mainly due to the varying abundance of polymer composition in sediments. The value of PLIsediments is 2.51, which mainly depends on the MPs abundance in sediments and yields the hazard level of I. The ecological risk posed by MPs in beach sediments along the Thoothukudi coast (RIsediments = 241.06) falls into the medium category, indicating that steps must be taken to reduce the flow of plastics through management measures such as proper wastewater treatment practices, recycling of plastic waste and proper waste disposal. Field emission scanning electron microscopy (FESEM) images revealed that MPs surfaces were strongly weathered and energy dispersive X-ray (EDX) spectroscopy spectra showed that the presence of inorganic elements associated with the surface MPs might be derived from the surrounding environment or additives in plastics. Hence, further research has to be conducted in view of studying the combined effects of MPs pollution and organic pollutants, which will provide further understanding of the contamination of MPs in the marine environment.
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Affiliation(s)
- Kalaiselvan Keerthika
- Department of Aquatic Environment Management, Fisheries College and Research Institute, Thoothukudi, Tamil Nadu, India
| | - Pandurangan Padmavathy
- Department of Aquatic Environment Management, Fisheries College and Research Institute, Thoothukudi, Tamil Nadu, India.
| | - Velu Rani
- Department of Aquatic Environment Management, Fisheries College and Research Institute, Thoothukudi, Tamil Nadu, India
| | - Robinson Jeyashakila
- Department of Fish Quality Assurance and Management, Fisheries College and Research Institute, Thoothukudi, Tamil Nadu, India
| | - Samraj Aanand
- Erode Bhavanisagar Centre for Sustainable Aquaculture, Erode, Tamil Nadu, India
| | - Ranjeet Kutty
- Department of Aquatic Environment Management, College of Fisheries, Kerala University of Fisheries and Ocean Studies, Kochi, Kerala, India
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Masoudi E, Hedayati A, Bagheri T, Salati A, Safari R, Gholizadeh M, Zakeri M. Different land uses influenced on characteristics and distribution of microplastics in Qarasu Basin Rivers, Gorgan Bay, Caspian Sea. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:64031-64039. [PMID: 35469378 DOI: 10.1007/s11356-022-20342-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
Concerns about the negative effects of microplastics (MPs) on human health have led to increasing attention to the occurrence of MPs in the aquatic environment. Recent studies have focus on the spatio-temporal distribution of MPs in rivers for residential and agricultural areas. Qarasu River Basin, watershed to Gorgan Bay, is the site of many permanent rivers and the levels of MP pollution in those rivers are unknown. This research was conducted in three different types of land use: forest, residential, and agricultural along 8 different rivers. A total of 9 fish species were identified and the presence of MPs in 87% of fish was confirmed. The prevalence of MP among species was Liza sp. > Carassius gibelio > Gambusia holbrooki > Rutilus rutilus > Neogobius melanostomus > Cyprinus carpio = Vimba vimba > Rutilus frisii > Barbus sp. The highest frequency of MPs was observed in Qarasu River (1880 ± 251 n/kg) and Mohammadabad River (184 ± 1340 n/kg) in agricultural land use, and the lowest frequency was related to Baghu and Ziarat Rivers with 660 ± 77 and 600 ± 91 n/kg found in forest land use respectively. The highest type, color, and size of MP sediments were fragment, black, and 1-2 mm, respectively. The highest type, color, and size of MP in fishes were fiber, black, and 0.5-0.1 mm respectively. Overall according to the source tracing result, agricultural land use was the main source of MP pollution of Gorgan Bay. The Bay is strongly affected by the incoming rivers, the Qarasu River Basin as the most important river supplying water.
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Affiliation(s)
- Ebrahim Masoudi
- Department of Fisheries and Aquatic Sciences, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Aliakbar Hedayati
- Department of Fisheries and Aquatic Sciences, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
| | - Tahereh Bagheri
- Offshore Water Research Center, Agricultural Research, Education and Extension Organization, Iranian Fisheries Science Research Institute, Chabahar, Iran
| | - AmirParviz Salati
- Department of Fisheries, Faculty of Marine Natural Resources, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran
| | - Roghayeh Safari
- Department of Aquaculture, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Mohammad Gholizadeh
- Department of Fisheries, Faculty of Natural Resources, University of Gonbad, Gonbad, Iran
| | - Mohammad Zakeri
- Department of Fisheries, Faculty of Marine Sciences, Hormozgan University, Bandar Abbas, Hormozgan, Iran
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20
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Paes EDS, Gloaguen TV, Silva HDADC, Duarte TS, de Almeida MDC, Costa ODV, Bomfim MR, Santos JAG. Widespread microplastic pollution in mangrove soils of Todos os Santos Bay, northern Brazil. ENVIRONMENTAL RESEARCH 2022; 210:112952. [PMID: 35182601 DOI: 10.1016/j.envres.2022.112952] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/02/2022] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
Microplastics have been studied in sediments from coastal and aquatic environments, but contamination of mangrove soils is still relatively unknown in most mangroves around the world. In this study, the presence of microplastics was investigated in six mangrove soils around the Todos Santos Bay (TSB), the largest and most important navigable bay on the Brazilian coast. Samples were collected at three depths (surface, 10 cm, and 30 cm) at three different distances from the lower tidal area. Ten grams of soil were sieved in a 150 μm mesh and centrifuged with ZnCl2 solution (density of 1.5 kg dm-3) for the extraction of microplastics. The microplastics were quantified, measured, and described using a systematic photographic method and the ImageJ program. Microplastics were abundant in all samples, with a mean of 10,782 ± 7,671 items kg-1 (max.: 31,087 items kg-1, only one sample <2,000 items kg-1), higher than any other value reported worldwide. The abundances varied among the six mangroves studied, with a predominance of fibers and mean size of 196 μm. Even remote mangroves were highly polluted, reflecting a large dispersion of the pollutants. The abundance did not differ significantly between soil depths, evidencing a continuous input and burial of microplastics in the soil up to 30 cm. The investigation of the source of microplastics and their presence in water and biota is urgent in this Brazilian region, and these results emphasize the need for global actions to protect coastal ecosystems.
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Affiliation(s)
- Eldimar da Silva Paes
- Center for Technology and Exact Sciences, Federal University of Reconcavo of Bahia, 44380-000, Cruz das Almas, Brazil
| | - Thomas Vincent Gloaguen
- Center for Technology and Exact Sciences, Federal University of Reconcavo of Bahia, 44380-000, Cruz das Almas, Brazil.
| | | | - Taciane Santos Duarte
- Center for Technology and Exact Sciences, Federal University of Reconcavo of Bahia, 44380-000, Cruz das Almas, Brazil
| | - Maria da Conceição de Almeida
- Center for Agricultural, Environmental and Biological Sciences, Federal University of Reconcavo of Bahia, 44380-000, Cruz das Almas, Brazil
| | - Oldair Del'Arco Vinhas Costa
- Center for Agricultural, Environmental and Biological Sciences, Federal University of Reconcavo of Bahia, 44380-000, Cruz das Almas, Brazil.
| | - Marcela Rebouças Bomfim
- Center for Agricultural, Environmental and Biological Sciences, Federal University of Reconcavo of Bahia, 44380-000, Cruz das Almas, Brazil.
| | - Jorge Antônio Gonzaga Santos
- Center for Agricultural, Environmental and Biological Sciences, Federal University of Reconcavo of Bahia, 44380-000, Cruz das Almas, Brazil.
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21
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Microplastics and Heavy Metals Removal from Fresh Water and Wastewater Systems Using a Membrane. SEPARATIONS 2022. [DOI: 10.3390/separations9070166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Water pollution, resulting from the degradation of plastics into microplastics, exposes humans and other living organisms to contaminated drinking water. Microplastics are capable of adsorbing toxic heavy metals which are carcinogenic and may affect the reproductive functions of living organisms. Hence, this study focuses on the characterization and quantification of microplastics in water to raise the awareness and propose a method of dealing with this emerging pollutant in various aqueous environments. The microplastics were separated from water using polyvinylidene difluoride (PVDF) and PVDF modified with carbon nano-onions (CNOs). The PVDF exhibited the highest concentration of microplastics in the wastewater influent (140 ± 1.85 MP/L) compared to the effluent (8.8 ± 2.10 MP/L), tap water (6.5 ± 5.77 MP/L), and lake water (10 ± 2.65 MP/L). The stereo microscope displayed red, blue, and black colored plastics. The morphological properties were determined using SEM. ATR-FTIR, equipped with Spectrum 10 Spectroscopy Software was used to establish the presence of high-density polyethylene (50%), poly(1,4-butylene terephthalate) (16.6%), nylon 12 (16.6%), and cellulose (16.6%) in the influent. The quantification of heavy metals extracted from the microplastics indicated that the concentrations of As (1.759 to 8.699 mg/L), Cu (83.176 mg/L) and Zn (0.610 mg/L) were above the acceptable limits. Our work is beneficial for the development of a microplastics monitoring protocol for various municipalities. Water treatment plants may also include the treatment of microplastics in the influent and monitor the effluent before the water is released back into the environment.
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22
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Wu Y, Chen X, Wen L, Li Z, Peng M, Wu H, Xie L. Linking human activity to spatial accumulation of microplastics along mangrove coasts. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 825:154014. [PMID: 35189243 DOI: 10.1016/j.scitotenv.2022.154014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 01/27/2022] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Microplastics (MP) in mangrove coasts are threating ecological health and seafood safety. However, quantitative evidence on the effects of different coastal human activities on microplastic accumulation in mangrove sediments is lacking, thereby impeding the policy development of evidence-based waste management. In this study, continuous geographical sampling (N = 50) was applied to collect sediments from the largest mangrove coast, namely the Leizhou Peninsula in China. Similar worldwide research data (16 mangrove coasts) were collected from the Science Citation Index Expanded (SCIE) database of the Web of Science. The connections between human drivers and microplastic accumulation were evaluated by spatial comparison, multi-correspondence analysis, and multiple differences analysis. The microplastic abundance fluctuated widely along the mangrove coasts (average value was 51.24, ranged from 6.40 to 255.57 items·kg-1 dry weight; coefficient of variation = 97%) with a globally lower-middle concentration in sediments of the Leizhou Peninsula. Densely populated urban residents and the floating population of tourists largely contributed to the high abundance of microplastics in mangrove sediments, of which large-sized (1-5 mm) white foams were the dominant type. Although suburbs had less crowds, both onshore and offshore fishery production could cause high accumulation of microplastics in neighboring mangrove coasts, which were characterized by small-sized (<1 mm) fragments with fresh color. Small microplastics (80%) with fresh color (44%) were dominant. Weathering may break down more toxic particles in urban areas neighboring mangrove coasts. Larger mangrove patches could partly block ocean-based microplastics; however, coasts surrounded by more geographical barriers had intensified pollutant accumulation. It was suggested that foam packaging of commodities for urban residents and tourists in popular tourism areas should be reduced and restrictions of fishery waste plastics are needed along shores with mangroves, especially in coasts surrounded by more geographic barriers.
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Affiliation(s)
- Yinglin Wu
- Western Guangdong Provincial Engineering Technology Research Center of Seafood Resource Sustainable Utilization, Lingnan Normal University, Zhanjiang 524048, Guangdong, People's Republic of China.
| | - Xiaohai Chen
- School of Life Science and Technology, Lingnan Normal University, Zhanjiang 524048, Guangdong, People's Republic of China
| | - Liyin Wen
- School of Life Science and Technology, Lingnan Normal University, Zhanjiang 524048, Guangdong, People's Republic of China
| | - Zitong Li
- School of Life Science and Technology, Lingnan Normal University, Zhanjiang 524048, Guangdong, People's Republic of China
| | - Meiyan Peng
- School of Life Science and Technology, Lingnan Normal University, Zhanjiang 524048, Guangdong, People's Republic of China
| | - Hongyi Wu
- School of Life Science and Technology, Lingnan Normal University, Zhanjiang 524048, Guangdong, People's Republic of China
| | - Ling Xie
- Western Guangdong Provincial Engineering Technology Research Center of Seafood Resource Sustainable Utilization, Lingnan Normal University, Zhanjiang 524048, Guangdong, People's Republic of China.
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Ruangpanupan N, Ussawarujikulchai A, Prapagdee B, Chavanich S. Microplastics in the surface seawater of Bandon Bay, Gulf of Thailand. MARINE POLLUTION BULLETIN 2022; 179:113664. [PMID: 35490488 DOI: 10.1016/j.marpolbul.2022.113664] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 03/20/2022] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
This study aimed to evaluate the microplastics abundance, composition and distribution in Bandon Bay's surface seawater, in southern Thailand. Samples of microplastics were collected from 48 transects using a surface manta trawl at four different estuaries that support human activities. The results showed that the highest microplastic abundance occurred in the fishery and aquaculture areas with a mean abundance of 0.33 particles/m3. Fragments were the dominant form at all stations. Microplastics with <1 mm were the dominant size, and white was the colour most found in all stations. Polypropylene was the major type of microplastic, accounting for 57% overall. This study is an important reference for understanding the microplastics status in the surface seawater of Bandon Bay, as it will allow relevant agencies to accurately assess the pollution level of microplastics in the bay. It is of practical significance to understand the sources and sinks of microplastics.
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Affiliation(s)
- Natenapa Ruangpanupan
- Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand
| | - Achara Ussawarujikulchai
- Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand.
| | - Benjaphorn Prapagdee
- Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand
| | - Suchana Chavanich
- Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
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24
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Maghsodian Z, Sanati AM, Tahmasebi S, Shahriari MH, Ramavandi B. Study of microplastics pollution in sediments and organisms in mangrove forests: A review. ENVIRONMENTAL RESEARCH 2022; 208:112725. [PMID: 35063433 DOI: 10.1016/j.envres.2022.112725] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 11/05/2021] [Accepted: 01/09/2022] [Indexed: 06/14/2023]
Abstract
Microplastics (MP) are an emerging and lesser-known pollutant that has attracted the attention of researchers around the world in recent decades. Size of PM is smaller than 5 mm and can be entered in different ways into marine environments like mangrove forests and interfere with the health of the environment and organisms. The present study reviews 53 studies in the field of microplastics in different parts (sediments and organisms) of mangrove forests. About 26% of the 53 studies was published in 2020. In most studies, MP particles were categorized based on the shape, color, size, and polymer genus. The number of microplastics per kilogram of mangrove sediments has been reported as 1.22-6390. The effect of sediment texture on the frequency of microplastic particles and the relationship between sediment pH and MP abundance were also discussed. The fiber and bright color PMs were more common in living organisms (mollusks, crustaceans, and fish). The PM particles with different genus (polypropylene, polyethylene, polystyrene, and polyethylene terephthalate) were reported for sediment samples. In sediments with smaller sizes and lower pH, microplastics have been detected more frequently. It was reported that sediments and roots of mangrove forests act as livestock and retain microplastics for a long time. The highest concentration of MP in different parts of mangrove forests (sediment and organisms) has been reported for China. Few reports were observed on microplastics in water in mangrove forests. Also, the concentration of microplastics in sediments and organisms in mangrove forests exposed to fishing, coastal tourism, urban, and industrial wastewater was higher than those in pristine areas. It is necessary to conduct comprehensive studies to monitor, control, and evaluate the MP pollution in sediments and various organisms in mangrove forests worldwide.
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Affiliation(s)
- Zeinab Maghsodian
- Department of Environmental Science, Persian Gulf Research Institute, Persian Gulf University, Bushehr, Iran
| | - Ali Mohammad Sanati
- Department of Environmental Science, Persian Gulf Research Institute, Persian Gulf University, Bushehr, Iran.
| | - Saeed Tahmasebi
- Department of Statistics, Persian Gulf University, Bushehr, Iran
| | | | - Bahman Ramavandi
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran.
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25
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Neelavannan K, Achyuthan H, Sen IS, Krishnakumar S, Gopinath K, Dhanalakshmi R, Rajalakshmi PR, Sajeev R. Distribution and characterization of plastic debris pollution along the Poompuhar Beach, Tamil Nadu, Southern India. MARINE POLLUTION BULLETIN 2022; 175:113337. [PMID: 35093779 DOI: 10.1016/j.marpolbul.2022.113337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/07/2022] [Accepted: 01/07/2022] [Indexed: 05/26/2023]
Abstract
The present study was carried out to determine the characteristics, distribution, and abundance of plastic debris in 25 sediment samples collected from the Poompuhar beach, southeast coast of India. The result reveals that the mean plastic debris abundance was 42 ± 27 particles/m2 dry weight (dw) (1 SD, n = 25) with higher concentrations in the river mouth. The dominant shapes in the study area were fragment (70.7%), followed by fiber (20.7%), and pellet-shaped (8.6%). The dominant colors of the plastic debris were: white-colored (47%) followed by blue (28%) and green (14%). The study further reveals that the dominant polymer type was polyethylene (PE, 63.4%), followed by nylon (PA, 16.9), polyvinyl chloride (PVC, 15.5%), polypropylene (PP, 3.1%), and polystyrene (PS, 1.1%). In the study area, the main source of plastic debris was from land-based fishing and tourism activities, and rainwater runoff from the Cauvery River.
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Affiliation(s)
- Kannaiyan Neelavannan
- Institute for Ocean Management, Anna University, Chennai 600025, India; Department of Earth Sciences, Indian Institute of Technology Kanpur, Kanpur 208016, India.
| | - Hema Achyuthan
- Institute for Ocean Management, Anna University, Chennai 600025, India.
| | - Indra Sekhar Sen
- Department of Earth Sciences, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - S Krishnakumar
- Institute for Ocean Management, Anna University, Chennai 600025, India; Department of Geology, Malankara catholic college, Mariyagiri, Kaliyakkavilai, Kanyakumari 629153, India
| | - Kalpana Gopinath
- Institute for Ocean Management, Anna University, Chennai 600025, India; Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, Luleå 97754, Sweden
| | - R Dhanalakshmi
- Department of Geography, Queen Mary's College, Chennai 600 004, India
| | - P R Rajalakshmi
- Institute for Ocean Management, Anna University, Chennai 600025, India
| | - Riffin Sajeev
- Institute for Ocean Management, Anna University, Chennai 600025, India
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26
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Meera SP, Bhattacharyya M, Nizam A, Kumar A. A review on microplastic pollution in the mangrove wetlands and microbial strategies for its remediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:4865-4879. [PMID: 34791631 DOI: 10.1007/s11356-021-17451-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 11/05/2021] [Indexed: 06/13/2023]
Abstract
Mangroves are one of the most productive ecosystems in the world harboring huge biological diversity. The prime ecological roles of mangroves are prevention of coastal erosion and shoreline protection. Mangroves face varying degrees of threats due to overexploitation, conversion of mangrove habitats for agriculture, settlement and industrial purposes, illegal encroachment, global warming, sea-level rise, El Nino, and pollution. Among them, microplastic (MP) pollution is a major concern threatening not only the mangroves per se but also the rich biodiversity that it shelters. In general, the microbial communities which are paramount to nutrient recycling and ecological dynamics undergo substantial changes upon MP exposure. If the MP pollution in the mangrove habitats continues unabated in the coming decades, there may be serious consequences on the already threatened mangrove ecosystems and the coastal communities. This review article attempts to consolidate MP pollution of mangrove wetlands, its impact on mangroves and associated microbiota, and the microbial solution for its remediation as a sustainable strategy.
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Affiliation(s)
- Suraj Prasannakumari Meera
- Department of Biotechnology and Microbiology, Dr. Janaki Ammal Campus, Kannur University, Palayad, 670661, Kerala, India
| | - Malini Bhattacharyya
- Department of Plant Science, Central University of Kerala, Kasaragod, 671316, Kerala, India
| | - Ashifa Nizam
- Department of Plant Science, Central University of Kerala, Kasaragod, 671316, Kerala, India
| | - Ajay Kumar
- Department of Plant Science, Central University of Kerala, Kasaragod, 671316, Kerala, India.
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27
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Gandhi KS, Pradhap D, Prabaharan G, Singh SH, Krishnakumar S. Distribution of plastic litter in beach sediments of Silver beach, Cuddalore, during Nivar Cyclone - A first report. MARINE POLLUTION BULLETIN 2021; 172:112904. [PMID: 34469828 DOI: 10.1016/j.marpolbul.2021.112904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 08/16/2021] [Accepted: 08/22/2021] [Indexed: 05/24/2023]
Abstract
The present study was conducted to assess the distribution of plastic debris in pre- and post-cyclonic beach sediments in Silver beach, Cuddalore, southeast coast of India. The total amount of macroplastic in pre-cyclonic beach sediments was higher than that in the post-cyclonic coastal sediments (pre-cyclonic 16.1%; post-cyclonic 5.4%). The polymer varieties in pre- and post-cyclonic sediments were present in the following descending order: Pre-cyclonic sediments: polyvinyl chloride (79.06%) > polyethylene (13.9%) > nylon (6.9%); post cyclonic sediments: polypropylene (31.4%) > polyethylene (30.5%) > polystyrene (16.0) > nylon (15.5%) > polyvinyl chloride (5.1%). The different varieties of polymers with irregular shapes in the sediments are most probably introduced into the coastal environment by cyclonic floods. Wind and cyclone-induced rainfall were the driving forces for the transportation and deposition of plastic debris. The results of this study will be useful to formulate effective beach litter management policies in an attempt to develop long-term solutions.
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Affiliation(s)
- K Sanjai Gandhi
- Department of Geology, Periyar University, PG Extension Centre, Dharmapuri 636701, Tamil Nadu, India.
| | - D Pradhap
- Department of Geology, University of Madras, Guindy campus, Chennai 600 025, Tamil Nadu, India
| | - G Prabaharan
- Department of Geology, Periyar University, PG Extension Centre, Dharmapuri 636701, Tamil Nadu, India
| | - Satheesh Herbert Singh
- Department of Geology, Malankara Catholic College, Mariagiri, Kaliakkavilai, Kanyakumari District, Tamil Nadu 629 153, India
| | - S Krishnakumar
- Department of Geology, Malankara Catholic College, Mariagiri, Kaliakkavilai, Kanyakumari District, Tamil Nadu 629 153, India.
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28
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Marques Mendes A, Golden N, Bermejo R, Morrison L. Distribution and abundance of microplastics in coastal sediments depends on grain size and distance from sources. MARINE POLLUTION BULLETIN 2021; 172:112802. [PMID: 34371343 DOI: 10.1016/j.marpolbul.2021.112802] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
Microplastic deposition in marine sediments is a geographically widespread problem. This study examines microplastics in intertidal and subtidal sediments at 87 locations in habitats designated as Special Areas of Conservation (SACs) and Special Protection Areas (SPAs) on the coastline of Ireland. Established methodological approaches including, organic matter digestion, density separation, particle extraction and polymer identification were applied. Microplastic abundance was closely related with distance from known sources and concentrations were greater in intertidal as opposed to subtidal sediments. Colourless, polyethylene fibres and polypropylene fragments were the most abundant MP recorded and finer grained sediments were shown to entrap more MPs than coarser sediments. The results demonstrate that an understanding of potential sources of pollution, sediment type and hydrodynamic conditions are very important in terms of MP abundance and distribution in marine sediments and also in terms of effective waste management strategies and policy aimed at reducing the global plastics problem.
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Affiliation(s)
- A Marques Mendes
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Ireland
| | - N Golden
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Ireland
| | - R Bermejo
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Ireland; Departamento de Biologia, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Spain
| | - L Morrison
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Ireland.
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29
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Radhakrishnan K, Sivapriya V, Rajkumar A, Akramkhan N, Prakasheswar P, Krishnakumar S, Hussain SM. Characterization and distribution of microplastics in estuarine surface sediments, Kayamkulam estuary, southwest coast of India. MARINE POLLUTION BULLETIN 2021; 168:112389. [PMID: 33901903 DOI: 10.1016/j.marpolbul.2021.112389] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 03/25/2021] [Accepted: 04/04/2021] [Indexed: 06/12/2023]
Abstract
The present study aims to formulate the characterization and distribution of microplastic in the estuarine surface sediments of Kayamkulam estuary, southwest coast of India. The sediments were dominated by fibre and film shaped microplastic substances. The surface sediments were dominated by <1000 μm microplastics. The composition of microplastics in descending order was as follows: polyester > polypropylene > polyethylene. The distribution of microplastics was significantly higher than that observed in the other study regions, except for Pearl river estuary and Guanabara Bay. The distribution of microplastics was chiefly controlled by estuarine inundating water and the distance of the sampling site from the open sea.
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Affiliation(s)
- K Radhakrishnan
- Department of Geology, University of Madras, Guindy Campus, Chennai 600 025, India
| | - V Sivapriya
- Department of Geology, University of Madras, Guindy Campus, Chennai 600 025, India
| | - A Rajkumar
- Department of Geology, University of Madras, Guindy Campus, Chennai 600 025, India
| | - N Akramkhan
- Department of Geology, University of Madras, Guindy Campus, Chennai 600 025, India
| | - P Prakasheswar
- Department of Geology, University of Madras, Guindy Campus, Chennai 600 025, India
| | - S Krishnakumar
- Malankara Catholic College, Mariagiri, Kaliakkavilai - 629 153, Kanyakumari District, Tamil Nadu, India.
| | - S M Hussain
- Department of Geology, University of Madras, Guindy Campus, Chennai 600 025, India
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