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Andriolo U, Gonçalves G. How much does marine litter weigh? A literature review to improve monitoring, support modelling and optimize clean-up activities. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 361:124863. [PMID: 39216667 DOI: 10.1016/j.envpol.2024.124863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 08/27/2024] [Accepted: 08/28/2024] [Indexed: 09/04/2024]
Abstract
The weight of marine litter has been marginally considered in comparison to counting and categorizing items. However, weight determines litter dynamics on water and coasts, and it is an essential parameter for planning and optimizing clean-up activities. This work reviewed 80 publications that reported both the number and weight of beached macro-litter worldwide. On average, a litter item weighed 19.5 ± 20.3 g, with a median weight of 13.4 g. Plastics composed 80% by number and 51% by weight of the global litter bulk. A plastic item weighed 12.9 ± 13.8 g on average, with a median weight of 9 g. The analysis based on continents and on water bodies returned similar values, which can be used to estimate litter weight on beaches from past and future visual census surveys, and from remote sensing imagery. Overall, this work can improve litter monitoring reports and support dynamics modelling, thereby contributing for environmental protection and mitigation efforts.
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Affiliation(s)
- Umberto Andriolo
- INESC Coimbra, Department of Electrical and Computer Engineering, Polo 2, 3030 - 290, Coimbra, Portugal.
| | - Gil Gonçalves
- INESC Coimbra, Department of Electrical and Computer Engineering, Polo 2, 3030 - 290, Coimbra, Portugal; University of Coimbra, Department of Mathematics, Coimbra, Portugal.
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2
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Monchanin C, Desmolles M, Rivetta K, Saramul S, Charoenpong C, Mehrotra R. Spatiotemporal variations in marine macro-litter pollution along the shoreline of Koh Mun Nai, an uninhabited island in the Gulf of Thailand. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 352:124098. [PMID: 38729512 DOI: 10.1016/j.envpol.2024.124098] [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: 01/18/2024] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 05/12/2024]
Abstract
Despite a recent ambitious plan to improve waste management in Thailand, few studies have monitored the impact of these policies on beached marine litter. Here, we assessed weekly the amounts and composition of stranded macro-litter (≥2.5 cm) on five beaches from an uninhabited island in Thailand during one year. A total of 24,407 items (391.86 kg) yielded a mean abundance of 3.18 ± 11.39 items m-2 (52.75 ± 204.68 g m-2), with plastic being the most abundant marine litter (48% of the total number). The overall Clean Coast Index (30.1) classified the beaches as 'extremely dirty', with a Plastic Abundance Index of 9.8 ('very high abundance' of plastics). When assessing the seasonal rates of accumulation, we found a higher flux pre-monsoon (0.05 items m-2 d-1; 0.66 g m-2 d-1) than post-monsoon (0.01 items m-2 d-1; 0.35 g m-2 d-1). Using modeling of the local hydrodynamic conditions, we explored the potential sources of the pollution, and surprisingly found that the closest river appeared not to be the source. Our results denote that the distribution and typology of marine litter were representatives of household and fishing activities, which in turn highlights the need for better regional litter management measures.
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Affiliation(s)
- Coline Monchanin
- Aow Thai Marine Ecology Center, Love Wildlife Foundation, FREC Bangkok, 77 Nakhon Sawan Road, Wat Sommanat, Pom Prap Sattru Phai, Bangkok, 10100, Thailand.
| | - Matthias Desmolles
- Aow Thai Marine Ecology Center, Love Wildlife Foundation, FREC Bangkok, 77 Nakhon Sawan Road, Wat Sommanat, Pom Prap Sattru Phai, Bangkok, 10100, Thailand
| | - Kilian Rivetta
- Department of Marine Science, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330, Thailand
| | - Suriyan Saramul
- Department of Marine Science, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330, Thailand
| | - Chawalit Charoenpong
- Department of Marine Science, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330, Thailand
| | - Rahul Mehrotra
- Aow Thai Marine Ecology Center, Love Wildlife Foundation, FREC Bangkok, 77 Nakhon Sawan Road, Wat Sommanat, Pom Prap Sattru Phai, Bangkok, 10100, Thailand
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Lawen A, Lawen J, Turner A. Beached plastic and other anthropogenic debris in the inner Seychelles islands: Results of a citizen science approach. MARINE POLLUTION BULLETIN 2024; 201:116176. [PMID: 38493677 DOI: 10.1016/j.marpolbul.2024.116176] [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: 12/15/2023] [Revised: 02/16/2024] [Accepted: 02/16/2024] [Indexed: 03/19/2024]
Abstract
Masses of plastic and other anthropogenic debris on beaches of inner Seychelles and derived from 53 organised clean-ups have been analysed. Debris and plastic densities ranged from 0.0011 to 0.1622 kg m-2 and 0.0004 to 0.1179 kg m-2, respectively, and data from successive cleans of the same beach resulted in respective median accumulation rates of 0.0293 and 0.0137 g m-2 d-1. There was no dependence of density or accumulation on beach location/aspect or season, but there were significant inverse relationships with beach area. This effect was attributed to most debris and plastic being trapped on the backshore by rocks and vegetation, and the areal proportion of backshore increasing with decreasing beach size. Plastic is derived from local littering and more distal sources, with polyethylene terephthalate bottles, flip-flops and Styrofoam fragments making important contributions. Without intervention and an increased risk of coastal flooding with climate change, beached debris on Seychelles is predicted to increase.
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Affiliation(s)
- Alvania Lawen
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK; Parley Foundation, 187 Lafayette Street, New York, NY 10013, USA
| | - Jessica Lawen
- Parley Foundation, 187 Lafayette Street, New York, NY 10013, USA
| | - Andrew Turner
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK.
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Hassan HO, Ayeta EG, Ibrahim AA, Omar MF, Abdi SM, Houmed YK, Dirie AM, Faseyi CA. The first assessment of marine litter on somalian coast: The case of Liido Beach, mogadishu. Heliyon 2024; 10:e26593. [PMID: 38420493 PMCID: PMC10901002 DOI: 10.1016/j.heliyon.2024.e26593] [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: 10/03/2023] [Revised: 02/06/2024] [Accepted: 02/15/2024] [Indexed: 03/02/2024] Open
Abstract
This paper presents the first assessment of marine litter in the Mogadishu coastal area of Somalia. Samples were collected monthly using 100 m × 40 m transect and classified following OSPAR Marine Litter Survey Guide while litter sources were identified using Ocean Conservancy Marine Debris Index. The results showed a total of 119873 items consisting of plastics (89.47%), clothing items (7.53%), and others (3.00%) recovered from Liido Beach. Litter density ranged from 2.19 items/m2 to 14.18 items/m2 with a mean of 6.25 items/m2 and Clean Coast Index (CCI) suggesting that Liido Beach is extremely dirty (>20 items/m2). In addition, the primary sources of marine litter at the beach are local recreational and shoreline activities (54.12%), and dumping (36.61%). The dominance of plastic litter on the beach poses potential threats to marine biodiversity in the Somalia coastal area and the West Indian Ocean. It is recommended that effective strategies and solutions to mitigate litter on the beach and other coastal areas in Somalia should be developed and compensated with public education and awareness campaigns across the country.
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Affiliation(s)
| | - Emuobonuvie G Ayeta
- Centre for Coastal Management, Africa Centre of Excellence in Coastal Resilience, University of Cape Coast, Ghana
- Department of Fisheries and Aquatic Sciences, University of Cape Coast, Ghana
| | | | | | | | | | - Abdulrahman M Dirie
- Green Climate Fund Readiness Project, Global Water Partnerships Africa, Somalia
| | - Charles A Faseyi
- Centre for Coastal Management, Africa Centre of Excellence in Coastal Resilience, University of Cape Coast, Ghana
- Department of Fisheries and Aquatic Sciences, University of Cape Coast, Ghana
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Aranoco AP, Albolote JMG, Alimbon JA, Caga-Anan KP. Beach litter occurrence along the shoreline of Mabini Protected Landscape and Seascape, Davao de Oro, Philippines. MARINE POLLUTION BULLETIN 2023; 195:115579. [PMID: 37742516 DOI: 10.1016/j.marpolbul.2023.115579] [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: 08/19/2023] [Revised: 09/17/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
This study aimed to assess the occurrence of marine litter on selected beaches in Mabini Protected Landscape and Seascape, Davao de Oro, Philippines, where records have not been published yet. Beach litter was collected during low tide from four beaches in June 2023. Results revealed that plastics were the most abundant type of litter at 82.22 %. Most plastic materials sampled were plastic fragments and packaging at 37.72 % and 18.24 %, respectively. An independent t-test showed that rocky beaches had significantly higher litter density at 1.38 items m-2 than sandy beaches at 0.45 items m-2, t(10) = 4.281, p = 0.001. The present results indicated that the actual cleanliness of the Mabini coast is low, suggesting that clean-up strategies from various stakeholders are needed.
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Affiliation(s)
- Arnold P Aranoco
- Department of Teacher Education, UM Tagum College, Tagum City, 8100, Davao del Norte, Philippines
| | - Jessa Mae G Albolote
- Department of Teacher Education, UM Tagum College, Tagum City, 8100, Davao del Norte, Philippines
| | - Jemer A Alimbon
- Department of Teacher Education, UM Tagum College, Tagum City, 8100, Davao del Norte, Philippines.
| | - Katherine P Caga-Anan
- Department of Teacher Education, UM Tagum College, Tagum City, 8100, Davao del Norte, Philippines
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Erüz C, Terzi Y, Ismail NP, Özşeker K, Başkan N, Karakoç FT. From source to sink: A comparative study of streamside and beach litter in the Black Sea. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 161:1-9. [PMID: 36848745 DOI: 10.1016/j.wasman.2023.02.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/07/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
The increasing amount of marine litter pollution and its impact on the marine environment raises global concern. This study aims to reveal the effect of streams on marine litter density and composition. A total of ten stations on the southeastern Black Sea and six stations on the Manahoz stream were seasonally surveyed. The litter density ranged between 0.838 ± 0.33 and 4.01 ± 0.55 items/m2 in the beach stations, and 0.93 ± 0.27 2.40 ± 2.18 items/m2 in the streamside stations. No significant difference was determined among the seasons for both beach and streamside (Kruskal-Wallis test, p > 0.05). On the other hand, the litter density was also similar in beach and streamside stations in the same season. The litter composition consisted of > 75% plastic. Principal component analysis and PERMANOVA determined no significant difference in litter composition among beach and streamside stations. The litter items mostly consisted of single-use items. Among them, plastic beverage containers were the most abundant litter subcategory during the study (ranging between 18.79% and 34.50%). The subcategory composition exhibited a significant difference among beach and streamside stations (ANOSIM, p < 0.05), which was mainly explained by plastic pieces, beverage containers, and foams according to SIMPER analysis. Personal protection equipment that was not reported before the COVID-19 pandemic emerged. The results of our study can be used for marine litter modeling studies and legislation for restriction or ban of most abundant single-use litter items.
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Affiliation(s)
- Coşkun Erüz
- Department of Marine Science and Technology Engineering, Faculty of Marine Sciences, Karadeniz Technical University, Trabzon, Turkey
| | - Yahya Terzi
- Department of Fisheries Technology Engineering, Faculty of Marine Sciences, Karadeniz Technical University, Trabzon, Turkey.
| | - Neira Purwanty Ismail
- Department of Fisheries Technology Engineering, Faculty of Marine Sciences, Karadeniz Technical University, Trabzon, Turkey
| | - Koray Özşeker
- Institute of Marine Sciences and Technology, Karadeniz Technical University, Trabzon, Turkey
| | - Nurettin Başkan
- Department of Fisheries Technology Engineering, Faculty of Marine Sciences, Karadeniz Technical University, Trabzon, Turkey
| | - Fatma Telli Karakoç
- Department of Marine Science and Technology Engineering, Faculty of Marine Sciences, Karadeniz Technical University, Trabzon, Turkey
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Mugilarasan M, Karthik R, Robin RS, Subbareddy B, Hariharan G, Anandavelu I, Jinoj TPS, Purvaja R, Ramesh R. Anthropogenic marine litter: An approach to environmental quality for India's southeastern Arabian Sea coast. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 866:161363. [PMID: 36610620 DOI: 10.1016/j.scitotenv.2022.161363] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/21/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Anthropogenic marine litter (AML), mainly plastic, is a global concern that is persistent and widespread. To prevent and mitigate this threat, we need to understand the magnitude and source of AML. There is limited knowledge about AML pollution on the Indian Coast. In this context, the present study examined the distribution, abundance, typology, and beach quality based on AML along 22 beaches on the southeastern coast of the Arabian Sea. A total of 4911 AML items were classified into 9 categories, weighing 16.79 kg, and retrieved from a total area of 8000 m2. The mean abundance and weight of AML in the current study were 0.45 ± 0.34 items/m2 and 1.53 ± 0.92 g/m2, respectively. Thottapally showed the most abundant AML among the studied beaches with 0.96 items/m2, followed by Azheekkal with 0.73 items/m2. Plastic, being the most common item, accounts for 77.6 % of all items and has a mean density of 0.35 items/m2 comprising hard plastic (22 %), thermocol (13 %), food wrappers (7 %), cigarette butts (7 %), plastic rope (6 %), and plastic cutlery (6 %). Hazardous anthropogenic litter (HAL) was maximum at Thottapally (17.71 %; 85 out of 480 items collected). Based on the cleanliness of beaches, they are graded "moderately clean" (63 %) by the General Index (GI), "clean" (54 %), and "moderately clean" (40 %) as calculated by the Clean Coast Index (CCI). Hazardous Anthropogenic Beach Litter Index (HABLI) classifies 72 % of beaches as "moderately safe", while the Environmental Status Index (ESI) rates 68 % of beaches as "mediocre". Besides, model simulations demonstrated the pathways of AML propagation, which correlate to the littoral and coastal current flow patterns over the region. Land-based activities were the crucial factors influencing AML distribution. The study highlighted the need for effective regional litter management strategies, policy instruments for the litter impact pathways, economic, regulatory, and behavioural management tools, which were also discussed.
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Affiliation(s)
- M Mugilarasan
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - R Karthik
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - R S Robin
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India.
| | - B Subbareddy
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - G Hariharan
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - I Anandavelu
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - T P S Jinoj
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - R Purvaja
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - R Ramesh
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
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Okuku EO, Kombo M, Mwalugha C, Owato G, Otieno K, Mbuche M, Chepkemboi P, Kiteresi LI, Wanjeri V. Are tropical mangroves a sink for litter leaking from land-and sea-based sources? Evidence from selected Kenyan mangroves. MARINE POLLUTION BULLETIN 2023; 187:114590. [PMID: 36657341 DOI: 10.1016/j.marpolbul.2023.114590] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Marine litter surveys were carried out to determine the role of mangroves as a sink for litter. General litter density in the mangroves was 0.088 ± 0.076 items m-2, composed mainly of plastic (85.9 %). Higher litter densities occurred in the middle (0.162 ± 0.150 items m-2) compared to the landward (0.066 ± 0.049 items m-2) and the seaward zones (0.036 ± 0.028 items m-2), indicating the important role played by the middle zone in providing a sink for litter from both land and sea-based sources. Landward zones were a sink for heavier litter from land that could easily be trapped by mangrove roots (plastic and clothing). The middle zones retained mainly the litter that are not easily trapped by the mangroves' roots in seaward and landward zones, particularly soft plastics. The seaward zones acted as a sink for litter from sea-based sources mainly marine and fishing gears, and materials used for fishing and boat repairs.
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Affiliation(s)
- E O Okuku
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya.
| | - M Kombo
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
| | - C Mwalugha
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya; Technical University of Mombasa, P.O. Box 90420-80100, Mombasa, Kenya
| | - G Owato
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya; Pwani University, P.O Box 195-80108, Mombasa, Kenya
| | - K Otieno
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya; Technical University of Mombasa, P.O. Box 90420-80100, Mombasa, Kenya
| | - M Mbuche
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
| | - P Chepkemboi
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
| | - L I Kiteresi
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
| | - V Wanjeri
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
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Kong T, Li X, Pan K, Zhang W, Li R. Changes in Sources and Composition of Beach Waste in Coastal Cities around the Bohai Sea of China during the Tourist Peak and Off-Peak Seasons. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2573. [PMID: 36767936 PMCID: PMC9916262 DOI: 10.3390/ijerph20032573] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Beach waste is an important pollutant in the Bohai Sea and coastal cities around the Bohai Sea and has raised many social and environmental concerns in China. The semi-closed characteristics of the Bohai Sea, the well-developed tourism, the special industrial structure and residents' living habits endow the beach waste around Bohai sea with a unique character that should be explored. This study investigated changes in the sources and composition of beach waste in coastal cities around the Bohai Sea of China during the tourist peak and off-peak seasons. Beach waste from twenty beaches in thirteen coastal cities around the Bohai Sea was sampled and analyzed in March and August 2021, respectively. The results showed that beach waste around the Bohai Sea was characterized by large quantities and small weights and was greatly affected by human coastal activities. The sources and composition of beach waste from different coasts and different seasons varied, whereas the overall trend was consistent. In terms of composition, beach waste in both the tourist peak season and off-peak season was mainly composed of plastics, fabrics and paper, which accounted for more than 70% of the total in weight. Meanwhile, the proportion of plastics in the total quantity of beach waste was greatest (maximum of up to 71%) and exhibited seasonal fluctuations, trending higher in the tourist peak season than in the off-peak season. In contrast, trends in the proportion of paper and fabrics in the total quantity and total weight of beach waste were relatively stable in different seasons. In terms of sources, beach waste mainly derived from human coastal activities, the proportion of which in the total quantity of beach waste in the tourist peak season reached 70.55% and was 11% higher than that in the tourist off-peak season. Shipping/fishing activities were the second largest source of beach waste, and their proportion in the total quantity of beach waste in the tourist peak season was 5% lower than that in the tourist off-peak season, as the tourist peak season around the Bohai Sea coincides exactly with the fishing moratorium. The quantity of smoking-related waste only accounted for 9.35% and 7.73% of beach waste in the tourist peak and off-peak seasons, respectively. The special semi-enclosed structure of the Bohai gulf, surrounded by land on three sides, aggravated the accumulation of beach waste on the coast. Source reduction and classified recovery, collaborative management of marine waste and beach waste, and joint prevention and control mechanisms of three provinces (Liaoning, Hebei and Shandong) and one municipality (Tianjin) were suggested for comprehensive management of beach waste in coastal cities around the Bohai Sea of China. This study provided valuable information for beach waste management in coastal cities around the Bohai Sea of China.
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Perumal K, Muthuramalingam S, Chellaiyan S. Marine litter on the beaches of the Kanyakumari, Southern India: An assessment of their abundance and pollution indices. MARINE POLLUTION BULLETIN 2023; 186:114443. [PMID: 36495610 DOI: 10.1016/j.marpolbul.2022.114443] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/29/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
The problem of marine litter is increasing along the Indian coast. For conducting a baseline study to identify and assess the abundance, clean-coast index (CCI), and plastics abundance index (PAI) of marine litter were calculated on the beaches of Kanyakumari, Southern India. A total of 11,439 marine litter items were collected and classified into 33 groups along the 7 beaches of Kanyakumari. From the results, plastics were the most abundant items (65.08 %) followed by foam (21.93 %), along with cloths (4.59 %), rubber (3.09 %), papers (2.26 %), glass (2.16 %), metal (0.38 %), wood (0.26 %), and others (0.26 %). The average CCI value (27.24) indicates that all beaches are 'extremely dirty'; however, the PAI average value (4.37) indicates 'high abundance'. About 96.87 % of the marine litter originates from the land-based sources. This study provides an interpretive framework for further plastic pollution assessment, which could lead to a better marine litter management on Indian beaches.
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Affiliation(s)
- Karthikeyan Perumal
- School of Marine Sciences, Department of Oceanography and Coastal Area Studies, Alagappa University, Karaikudi 630 003, Tamil Nadu, India.
| | - Subagunasekar Muthuramalingam
- Centre for Geoinformatics, School of Health Sciences & Rural Development, The Gandhigram Rural Institute, Dindigul 624 302, Tamil Nadu, India
| | - Stella Chellaiyan
- School of Marine Sciences, Department of Oceanography and Coastal Area Studies, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
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Fadare OO, Akinbile AA, Makinde OW, Ogundele KT, Ajagbe EF, Ilechukwu I. Spatiotemporal variations in marine litter along the Gulf of Guinea coastline, Araromi seaside, Nigeria. MARINE POLLUTION BULLETIN 2022; 183:114048. [PMID: 35998524 DOI: 10.1016/j.marpolbul.2022.114048] [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: 06/20/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
This study assessed the seasonal variation in the magnitude of marine litter along the Gulf of Guinea coastline, Araromi seaside, Nigeria with a survey of twenty sampling sites. The total number of litter items collected was 29,029 comprising 7358 and 21,671 items in the dry and rainy season respectively. The average number of items per square meter was higher in the rainy season (1.80 ± 0.35) than in the dry season (0.61 ± 0.19). Plastic materials dominated the litter composition with 86 % and 91.8 % in the dry and rainy season respectively. The beach cleanliness assessed as clean coast index (CCI) depicted the beach as dirty (12.26 ± 3.74) during the dry season and extremely dirty (36.13 ± 6.91) in the rainy season. The hazardous item index (HII) also showed the coastline was littered with hazardous items. These results provide baseline data for marine litter management along the Gulf of Guinea coastlines and other coastlines in Africa.
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Affiliation(s)
- Oluniyi O Fadare
- Department of Physical & Environmental Sciences, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Unit 5892, Corpus Christi, TX 78412, USA; Microplastics Research Group (MRG), Division of Environmental and Earth Sciences, Center for Energy Research and Development, Obafemi Awolowo University, Ile-Ife 220001, Nigeria; Organization of African Academic Doctor (OAAD), Off Kamiti Road, PO Box 25305000100, Nairobi, Kenya
| | - Adewale A Akinbile
- Department of Science Laboratory Technology, Abraham Adesanya Polytechnic, Dagbolu-Akanran Ibadan Road, Ijebu-Igbo 120105, Nigeria
| | - Oladotun Wasiu Makinde
- Microplastics Research Group (MRG), Division of Environmental and Earth Sciences, Center for Energy Research and Development, Obafemi Awolowo University, Ile-Ife 220001, Nigeria
| | - K T Ogundele
- Microplastics Research Group (MRG), Division of Environmental and Earth Sciences, Center for Energy Research and Development, Obafemi Awolowo University, Ile-Ife 220001, Nigeria
| | - Eyitayo F Ajagbe
- Department of Biological Sciences, Yaba College of Technology, Lagos 101212, Nigeria
| | - Ifenna Ilechukwu
- Graduate School of Engineering and Science, Department of Marine and Environmental Science, University of the Ryukyus, Nishihara, Okinawa, Japan; Environmental Chemistry Unit, Department of Industrial Chemistry, Madonna University, Elele Campus, Rivers State, Nigeria.
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Cordova MR, Iskandar MR, Muhtadi A, Saville R, Riani E. Spatio-temporal variation and seasonal dynamics of stranded beach anthropogenic debris on Indonesian beach from the results of nationwide monitoring. MARINE POLLUTION BULLETIN 2022; 182:114035. [PMID: 35973247 DOI: 10.1016/j.marpolbul.2022.114035] [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: 04/02/2022] [Revised: 08/04/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
The first stranded macrodebris study on a national scale in Indonesia was conducted on 18 beaches from February 2018 to December 2019. The average weight and abundance of beach debris were higher between October and February (rainy season). The highest stranded macrodebris was located in Ambon, Manado, Takalar, and Padang. Plastic (46.38 %) was the most prevalent type of debris across all macrodebris categories, with single-use plastics such as plastic sachets, plastic bags, and plastic bottles being the dominant macroplastic debris (64.64 %). Based on CCI, HII, and BGI, 18 beaches are "moderately clean," with few hazardous items observed, and "Good." This anthropogenic macrodebris is thought to be more localized (55 %) than transboundary macrodebris. Litter control and environmental quality of this Indonesian coastal region should be improved through a proactive and flexible approach. Finally, extensive stranded beach debris monitoring is recommended to better understand the distribution of macrodebris in the region.
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Affiliation(s)
- Muhammad Reza Cordova
- Research Center for Oceanography, National Research and Innovation Agency (BRIN) Republic of Indonesia, BRIN Kawasan Jakarta Ancol, Jalan Pasir Putih I, Ancol Timur, Jakarta 14430, Indonesia.
| | - Mochamad Riza Iskandar
- Research Center for Oceanography, National Research and Innovation Agency (BRIN) Republic of Indonesia, BRIN Kawasan Jakarta Ancol, Jalan Pasir Putih I, Ancol Timur, Jakarta 14430, Indonesia.
| | - Ahmad Muhtadi
- Department of Aquatic Resources Management, Faculty of Agriculture, Universitas Sumatera Utara, Jl. Prof. A. Sofyan No. 3, Medan 20215, Indonesia.
| | - Ramadhona Saville
- Laboratory of Management Informatics, Tokyo University of Agriculture, Setagaya Campus 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan.
| | - Etty Riani
- Department of Aquatic Resources Management, Bogor Agricultural University, Jl. Agatis Kampus IPB Darmaga, Bogor, Jawa Barat 16680, Indonesia.
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13
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Stanton T, Chico G, Carr E, Cook S, Gomes RL, Heard E, Law A, Wilson HL, Johnson M. Planet Patrolling: A citizen science brand audit of anthropogenic litter in the context of national legislation and international policy. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129118. [PMID: 35576666 DOI: 10.1016/j.jhazmat.2022.129118] [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: 03/07/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
Anthropogenic Litter (AL) is ubiquitous in distribution and diverse in type and impact. Citizen science AL clean-ups engage citizens with the environment and have the potential to generate data that can inform policy. Here we present a detailed citizen science survey of AL across freshwater, terrestrial, and coastal environments of the United Kingdom (UK), coordinated by the not-for-profit Planet Patrol throughout 2020. Key materials, industries, brands, and parent companies associated with AL are identified. Plastic dominated AL (63%), followed by metal (14%), and composite materials (12%). The majority of AL (56%) had been used as beverage containers and non-beverage packaging, and 38.8% of AL was branded. Of the branded AL, 26% was associated with The Coca-Cola Company, Anheuser-Busch InBev, and PepsiCo. These three companies were associated with significantly more branded litter than any other. We place these data in the context of upcoming UK legislation and the Environmental Social Governance (ESG) statements of the companies associated with the majority of the recorded litter. Knowledge gaps and recommendations for AL surveying are made, and the focus of corporate and government actions are discussed.
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Affiliation(s)
- Thomas Stanton
- Geography and Environment, Loughborough University, Loughborough LE11 3TU, United Kingdom; School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Brackenhurst Campus, Southwell NG25 0QF, United Kingdom.
| | - Guaduneth Chico
- School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Brackenhurst Campus, Southwell NG25 0QF, United Kingdom
| | | | - Sarah Cook
- School of Biosciences, Division of Agricultural and Environmental Sciences, University of Nottingham, C23 The Gateway Building, Sutton Bonington Campus, Loughborough LE12 5RD, United Kingdom
| | - Rachel Louise Gomes
- Food, Water, Waste Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | | | - Antonia Law
- School of Geography, Geology, and the Environment, Keele University, Keele, Staffordshire ST5 5BG, United Kingdom
| | - Hazel L Wilson
- School of Geography, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Matthew Johnson
- School of Geography, University of Nottingham, Nottingham NG7 2RD, United Kingdom
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14
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Baxter L, Lucas Z, Walker TR. Evaluating Canada's single-use plastic mitigation policies via brand audit and beach cleanup data to reduce plastic pollution. MARINE POLLUTION BULLETIN 2022; 176:113460. [PMID: 35217426 DOI: 10.1016/j.marpolbul.2022.113460] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/03/2022] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
Single-use plastics (SUPs) represent a major threat to marine environments and require proactive policies to reduce consumption and mismanagement. Many SUP management strategies exist to reduce SUP use and mitigate environmental impacts, including extended producer responsibility (EPR), deposit-return schemes, SUP bans or taxes, and public outreach and education. This study analyzed brand audit and beach cleanup data in four densely populated Canadian cities (Vancouver, Toronto, Montréal, Halifax) and a remote island (Sable Island) to determine efficacy of ongoing SUP mitigation measures. Cities were found to have similar litter type proportions, and six brands were found to disproportionally contribute to Canadian SUP litter, comprising 39% of branded litter collected. Results confirm that current Canadian SUP management appears to be insufficient to address leakage of SUPs into the environment. Recommendations to strengthen SUP management strategies and mitigate plastic pollution are recommended to improve future Canadian SUP reduction policies.
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Affiliation(s)
- Lisa Baxter
- Marine Affairs Program, Dalhousie University, Halifax, Canada.
| | - Zoe Lucas
- Sable Island Institute, P.O. Box 11, Halifax Central, Halifax, Nova Scotia B3J 2L4, Canada
| | - Tony R Walker
- School for Resource and Environmental Studies, Dalhousie University, Halifax, Canada
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15
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Akarsu C, Sönmez VZ, Altay MC, Pehlivan T, Sivri N. The spatial and temporal changes of beach litter on Istanbul (Turkey) beaches as measured by the clean-coast index. MARINE POLLUTION BULLETIN 2022; 176:113407. [PMID: 35168069 DOI: 10.1016/j.marpolbul.2022.113407] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/25/2022] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
Possible access routes of macro and mesoplastics, acting as the main sources of pollution in the coastal ecosystem, are examined as a case study on four beaches along the Istanbul coast. A total number of 3787 items belonging to 12 categories of debris types were collected as follows: macroplastics 47.8%; mesoplastics 9.2%; and others 43.0% such as paper pieces, glass pieces and metal beverage cans. Clean-coast and carbonyl indexes were also used to identify the level of cleanliness of the sampling sites. The clean-coast index revealed that all of the sample sites were categorized as extremely dirty. Moreover, carbonyl index results indicate that 35.7% of the samples were at a high oxidation level indicating that some of the particles relatively spend more time on beaches. The litter concentration and surface oxidation results were addressing issues that should be taken into consideration to improve litter management strategies of the beaches.
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Affiliation(s)
- Ceyhun Akarsu
- Istanbul University-Cerrahpasa, Department of Environmental Engineering, Istanbul, Turkey.
| | - Vildan Zülal Sönmez
- Istanbul University-Cerrahpasa, Department of Environmental Engineering, Istanbul, Turkey
| | - Melek Cumbul Altay
- Istanbul University-Cerrahpasa, Department of Metallurgical and Materials Engineering, Istanbul, Turkey
| | - Tayfun Pehlivan
- Istanbul University-Cerrahpasa, Institute of Graduate Studies, Istanbul, Turkey
| | - Nüket Sivri
- Istanbul University-Cerrahpasa, Department of Environmental Engineering, Istanbul, Turkey
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16
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Okuku EO, Owato G, Otieno K, Kombo MM, Chiphatsi MM, Gwada B, Chepkemboi P, Wanjeri V, Kiteresi LI, Achieng Q, Nelson A. The influence of monsoons on the spatial distribution and composition of floating marine litter. MARINE POLLUTION BULLETIN 2022; 175:113386. [PMID: 35124374 DOI: 10.1016/j.marpolbul.2022.113386] [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: 10/21/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Floating marine litter (FML) surveys were conducted in the near shore waters of Mombasa, Kilifi and Kwale Counties of Kenya through trawling using a manta net. A mean density of 26,665 ± 2869 items km-2 composed of 34.8% hard plastic, 40.5% soft plastics and 22.0% plastic lines/fibers was reported in this study. Litter densities in Kwale, Kilifi and Mombasa Counties were not influenced by monsoons, however, litter composition was influenced by monsoons with NEM and SEM being dominated mainly by hard plastics and soft plastics respectively. Litter categories diversity, evenness and richness were also not influenced by the monsoons during both NEM (1.01, 0.78 and 3, respectively) and SEM (1.09, 0.78 and 4, respectively). Fishing and recreational beaches had higher litter densities during NEM compared to SEM attributed to higher beach visitation and increased fishing activities during the calmer NEM season.
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Affiliation(s)
- Eric Ochieng Okuku
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya.
| | - Gilbert Owato
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya; Pwani University, P.O Box 195-80108, Mombasa, Kenya
| | - Kenneth Otieno
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya; Technical University of Mombasa, P.O. Box 90420 - 80100, Mombasa, Kenya
| | | | | | - Brenda Gwada
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
| | - Purity Chepkemboi
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
| | - Veronica Wanjeri
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
| | | | - Quinter Achieng
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
| | - Annette Nelson
- Kenya Marine and Fisheries Research Institute, P. O. Box 81651, Mombasa, Kenya
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17
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van de Geer CH, Bourjea J, Broderick AC, Dalleau M, Fernandes RS, Harris LR, Inteca GE, Kiponda FK, Louro CMM, Mortimer JA, Msangameno D, Mwasi LD, Nel R, Okemwa GM, Olendo M, Pereira MAM, Rees AF, Silva I, Singh S, West L, Williams JL, Godley BJ. Marine turtles of the African east coast: current knowledge and priorities for conservation and research. ENDANGER SPECIES RES 2022. [DOI: 10.3354/esr01180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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