Pub Date : 2025-03-05DOI: 10.1016/j.marpolbul.2025.117785
Dumas Deconinck , Lai Leo Chan , Pengbin WANG , Jian-Wen Qiu
Red tides, or harmful algal blooms, are a growing concern due to their potential environmental, economic, and health impacts. Nutrient loading and climate change are often cited as the main drivers, but the causes remain inconclusive. The Hong Kong Agriculture, Fisheries and Conservation Department (HKAFCD) has extensive records of red tide sightings (since 1975) and the Hong Kong Environmental Protection Department (HKEPD) has extensive records of environmental data (since 1986). This study examined the spatio-temporal patterns of red tide sightings and their relationship with environmental parameters. The results suggest a change in causative species, with seasonal and spatial influences. The impact of environmental factors on red tide frequency is still unclear. Additionally, the water quality in Hong Kong has improved as a result of the Water Pollution Control Ordinance, Tolo Harbour Effluent Export Scheme (THEES), and implementation of the Harbour Area Treatment Scheme (HATS).
{"title":"Long-term spatio-temporal analysis of red tides in Hong Kong and their environmental drivers and ecological implications","authors":"Dumas Deconinck , Lai Leo Chan , Pengbin WANG , Jian-Wen Qiu","doi":"10.1016/j.marpolbul.2025.117785","DOIUrl":"10.1016/j.marpolbul.2025.117785","url":null,"abstract":"<div><div>Red tides, or harmful algal blooms, are a growing concern due to their potential environmental, economic, and health impacts. Nutrient loading and climate change are often cited as the main drivers, but the causes remain inconclusive. The Hong Kong Agriculture, Fisheries and Conservation Department (HKAFCD) has extensive records of red tide sightings (since 1975) and the Hong Kong Environmental Protection Department (HKEPD) has extensive records of environmental data (since 1986). This study examined the spatio-temporal patterns of red tide sightings and their relationship with environmental parameters. The results suggest a change in causative species, with seasonal and spatial influences. The impact of environmental factors on red tide frequency is still unclear. Additionally, the water quality in Hong Kong has improved as a result of the Water Pollution Control Ordinance, Tolo Harbour Effluent Export Scheme (THEES), and implementation of the Harbour Area Treatment Scheme (HATS).</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117785"},"PeriodicalIF":5.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143547953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study investigates the distribution, sources, and ecological risks of polybrominated diphenyl ethers (PBDEs) and organophosphate esters (OPEs) in estuarine and marine sediments near an industrial port in Northern Taiwan. Sediment samples were collected from five estuaries and adjacent marine areas at varying depths. PBDE and OPE concentrations ranged from 0.612 to 41.9 ng g−1 and 8.14–102 ng g−1, respectively, with higher OPE levels attributed to their continued usage. BDE-209 and TCPP were the dominant congeners, contributing to 73.7 % and 40.3 % of total PBDE and OPE concentrations, respectively. The positive correlation between total organic carbon (TOC) and PBDEs highlights TOC's role in pollutant retention. Ecological risk assessments indicated low risk for most sites, though medium risks were identified for specific OPEs at certain locations. These findings emphasize the importance of monitoring flame retardants in sediment ecosystems to mitigate potential environmental impacts.
{"title":"Flame retardant contamination and ecological risk analysis in estuarine and marine sediments around an industrial port","authors":"Tuan Truong Minh Dang , Li-Man Li , Bo-Wun Huang , Chien-Er Huang , Chien-Hsing Wu , Nicholas Kiprotich Cheruiyot , Guo-Ping Chang-Chien","doi":"10.1016/j.marpolbul.2025.117783","DOIUrl":"10.1016/j.marpolbul.2025.117783","url":null,"abstract":"<div><div>This study investigates the distribution, sources, and ecological risks of polybrominated diphenyl ethers (PBDEs) and organophosphate esters (OPEs) in estuarine and marine sediments near an industrial port in Northern Taiwan. Sediment samples were collected from five estuaries and adjacent marine areas at varying depths. PBDE and OPE concentrations ranged from 0.612 to 41.9 ng g<sup>−1</sup> and 8.14–102 ng g<sup>−1</sup>, respectively, with higher OPE levels attributed to their continued usage. BDE-209 and TCPP were the dominant congeners, contributing to 73.7 % and 40.3 % of total PBDE and OPE concentrations, respectively. The positive correlation between total organic carbon (TOC) and PBDEs highlights TOC's role in pollutant retention. Ecological risk assessments indicated low risk for most sites, though medium risks were identified for specific OPEs at certain locations. These findings emphasize the importance of monitoring flame retardants in sediment ecosystems to mitigate potential environmental impacts.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117783"},"PeriodicalIF":5.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143547948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-04DOI: 10.1016/j.marpolbul.2025.117759
Li Zhang , Xi Yang , Luqi Zhang , Lu Lu , Xing Ren , Zuhao Zhu , Tinglong Yang , Zhen Zhang , Xi Xiao , Xingyong Xu , Liangliang Huang
This study comprehensively analyzed 11 polychlorinated biphenyls (PCBs) and 16 organochlorine pesticides (OCPs) in 87 surface sediment samples collected across two seasons and in a sediment core from the Beibu Gulf, China. Overall, only a limited number and low concentrations of PCBs and OCPs were detected. In surface sediments, ΣPCBs concentrations were higher in summer (mean: 0.27 ± 0.37 ng/g dw) compared to winter (mean: 0.07 ± 0.06 ng/g dw), while ΣOCPs showed no significant seasonal variation (summer, mean: 0.19 ± 0.19 ng/g dw; winter, mean: 0.17 ± 0.07 ng/g dw). 4,4′-trichlorobiphenyl (PCB 28), 2,3,5,6-Tetrachlorobiphenyl (PCB 65) and p,p’-Dichlorodiphenyldichloroethylene (p,p’-DDE) were the most predominant contaminants, with average concentrations accounting for >90 % of the ΣPCBs and ΣOCPs, respectively. Spatial distribution revealed higher ΣPCBs concentrations in the southern Beibu Gulf compared to other areas. Industrial productions, shipping activities, as well as ocean current transport appear to be key sources of PCBs in studied region, while the aerobic degradation of residual DDT likely explains the widespread presence of DDE. In sediment core, both ΣPCBs and ΣOCPs exhibited parabolic variation trends along the sediment core depth, reflecting historical use in the Beibu Gulf, with recent declines in new inputs. Risk assessments indicated that PCBs and OCPs in Beibu Gulf sediments pose minimal ecological risks. These findings offer valuable scientific insights to support future research on typical organic pollutants in the Beibu Gulf.
{"title":"Polychlorinated biphenyls (PCBs) and organochloride pesticides (OCPs) in sediment from the Beibu Gulf, China: Occurrence, spatial-temporal distribution, source, historical variation and ecological risks","authors":"Li Zhang , Xi Yang , Luqi Zhang , Lu Lu , Xing Ren , Zuhao Zhu , Tinglong Yang , Zhen Zhang , Xi Xiao , Xingyong Xu , Liangliang Huang","doi":"10.1016/j.marpolbul.2025.117759","DOIUrl":"10.1016/j.marpolbul.2025.117759","url":null,"abstract":"<div><div>This study comprehensively analyzed 11 polychlorinated biphenyls (PCBs) and 16 organochlorine pesticides (OCPs) in 87 surface sediment samples collected across two seasons and in a sediment core from the Beibu Gulf, China. Overall, only a limited number and low concentrations of PCBs and OCPs were detected. In surface sediments, ΣPCBs concentrations were higher in summer (mean: 0.27 ± 0.37 ng/g dw) compared to winter (mean: 0.07 ± 0.06 ng/g dw), while ΣOCPs showed no significant seasonal variation (summer, mean: 0.19 ± 0.19 ng/g dw; winter, mean: 0.17 ± 0.07 ng/g dw). 4,4′-trichlorobiphenyl (PCB 28), 2,3,5,6-Tetrachlorobiphenyl (PCB 65) and p,p’-Dichlorodiphenyldichloroethylene (p,p’-DDE) were the most predominant contaminants, with average concentrations accounting for >90 % of the ΣPCBs and ΣOCPs, respectively. Spatial distribution revealed higher ΣPCBs concentrations in the southern Beibu Gulf compared to other areas. Industrial productions, shipping activities, as well as ocean current transport appear to be key sources of PCBs in studied region, while the aerobic degradation of residual DDT likely explains the widespread presence of DDE. In sediment core, both ΣPCBs and ΣOCPs exhibited parabolic variation trends along the sediment core depth, reflecting historical use in the Beibu Gulf, with recent declines in new inputs. Risk assessments indicated that PCBs and OCPs in Beibu Gulf sediments pose minimal ecological risks. These findings offer valuable scientific insights to support future research on typical organic pollutants in the Beibu Gulf.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117759"},"PeriodicalIF":5.3,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-04DOI: 10.1016/j.marpolbul.2025.117751
Marina Arenas , Eduardo Feijão , Irina A. Duarte , Vanessa F. Fonseca , Irene Aparicio , Esteban Alonso , Bernardo Duarte
Concern about the presence of pharmaceuticals in aquatic systems has increased in recent years owing to their continued release and the impact they may have on non-target organisms. Over half of these pharmaceuticals are chiral, with enantiomers that may have different pharmacokinetics and effects. However, most studies on their toxicity in marine biota have used racemic mixtures, ignoring the effects of isolated enantiomers. This work examines the potential enantioselective toxic effects of the chiral β-blocker propranolol, widely prescribed for cardiovascular diseases and migraines, and increasingly concerning due to its long-term use and raising consumption. This study used the diatom Phaeodactylum tricornutum as a model organism to assess the effect of each enantiomer on growth, photosynthesis, energy metabolism, and oxidative damage. The results showed that exposure of diatoms to R-propranolol induced growth inhibition due to deficiencies in photochemical metabolism, which was reflected in changes in the photosynthetic pigment profile. Oxidative stress also occurred in cells, resulting in lipid oxidation and DNA damage. In contrast, such effects were not observed for the S-enantiomer at the tested concentrations. This work shows the importance of considering enantiomer-specific effects in ecotoxicological assessments, as the two PRO enantiomers exhibit different toxicities in marine diatoms.
近年来，由于药物的持续释放及其可能对非目标生物造成的影响，人们对水生系统中存在的药物越来越关注。这些药物中有一半以上是手性的，其对映体可能具有不同的药代动力学和作用。然而，有关这些药物在海洋生物群中毒性的大多数研究都使用了外消旋混合物，而忽略了分离出的对映体的影响。手性β-受体阻滞剂普萘洛尔被广泛用于治疗心血管疾病和偏头痛，由于其长期使用和消费量不断增加，其潜在的对映体选择性毒性效应日益受到关注。本研究以硅藻 Phaeodactylum tricornutum 为模式生物，评估了每种对映体对生长、光合作用、能量代谢和氧化损伤的影响。结果表明，硅藻暴露于 R-普萘洛尔后会因光化学代谢缺陷而导致生长抑制，这反映在光合色素谱的变化上。细胞中还出现了氧化应激，导致脂质氧化和 DNA 损伤。相比之下，在测试浓度下，S-对映体没有观察到这些影响。这项工作表明了在生态毒理学评估中考虑对映体特异性效应的重要性，因为 PRO 的两种对映体在海洋硅藻中表现出不同的毒性。
{"title":"Enantioselective toxicity of propranolol on marine diatoms: Assessing growth, energy metabolism and oxidative damage in Phaeodactylum tricornutum","authors":"Marina Arenas , Eduardo Feijão , Irina A. Duarte , Vanessa F. Fonseca , Irene Aparicio , Esteban Alonso , Bernardo Duarte","doi":"10.1016/j.marpolbul.2025.117751","DOIUrl":"10.1016/j.marpolbul.2025.117751","url":null,"abstract":"<div><div>Concern about the presence of pharmaceuticals in aquatic systems has increased in recent years owing to their continued release and the impact they may have on non-target organisms. Over half of these pharmaceuticals are chiral, with enantiomers that may have different pharmacokinetics and effects. However, most studies on their toxicity in marine biota have used racemic mixtures, ignoring the effects of isolated enantiomers. This work examines the potential enantioselective toxic effects of the chiral β-blocker propranolol, widely prescribed for cardiovascular diseases and migraines, and increasingly concerning due to its long-term use and raising consumption. This study used the diatom <em>Phaeodactylum tricornutum</em> as a model organism to assess the effect of each enantiomer on growth, photosynthesis, energy metabolism, and oxidative damage. The results showed that exposure of diatoms to <em>R</em>-propranolol induced growth inhibition due to deficiencies in photochemical metabolism, which was reflected in changes in the photosynthetic pigment profile. Oxidative stress also occurred in cells, resulting in lipid oxidation and DNA damage. In contrast, such effects were not observed for the <em>S-</em>enantiomer at the tested concentrations. This work shows the importance of considering enantiomer-specific effects in ecotoxicological assessments, as the two PRO enantiomers exhibit different toxicities in marine diatoms.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117751"},"PeriodicalIF":5.3,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-04DOI: 10.1016/j.marpolbul.2025.117769
Seokhyun Lee , Yukinari Tsuruda , Masato Honda , Koki Mukai , Tomohiro Hirasawa , Daniel Christian Wijaya , Yuki Takai , Yohei Simasaki , Yuji Oshima
The East Asian region is an area of high human and fishery activity, where a substantial amount of plastic, especially expanded polystyrene (EPS), is discharged into the environment and reaches sandy and rocky seashores. EPS pollution and its impact on organisms inhabiting sandy and rocky areas may be suspected. In a field study conducted in the West Japan sandy and rocky seashore region, wharf roaches, Ligia spp., which are ubiquitous and cosmopolitan organisms in the Pacific area, were found to ingest EPS more frequently than polypropylene and polyethylene microplastics. Furthermore, the results of our feeding experiment indicate that wharf roaches are capable of not only grazing on EPS, but also fragmenting EPS to microplastics ranging from 2 to 214 μm in diameter when estimated as circles. We conclude that wharf roaches may contribute to the decomposition and fragmentation of EPS microplastics.
{"title":"Fragmentation of expanded polystyrene to microplastics by wharf roach Ligia spp.","authors":"Seokhyun Lee , Yukinari Tsuruda , Masato Honda , Koki Mukai , Tomohiro Hirasawa , Daniel Christian Wijaya , Yuki Takai , Yohei Simasaki , Yuji Oshima","doi":"10.1016/j.marpolbul.2025.117769","DOIUrl":"10.1016/j.marpolbul.2025.117769","url":null,"abstract":"<div><div>The East Asian region is an area of high human and fishery activity, where a substantial amount of plastic, especially expanded polystyrene (EPS), is discharged into the environment and reaches sandy and rocky seashores. EPS pollution and its impact on organisms inhabiting sandy and rocky areas may be suspected. In a field study conducted in the West Japan sandy and rocky seashore region, wharf roaches, <em>Ligia</em> spp., which are ubiquitous and cosmopolitan organisms in the Pacific area, were found to ingest EPS more frequently than polypropylene and polyethylene microplastics. Furthermore, the results of our feeding experiment indicate that wharf roaches are capable of not only grazing on EPS, but also fragmenting EPS to microplastics ranging from 2 to 214 μm in diameter when estimated as circles. We conclude that wharf roaches may contribute to the decomposition and fragmentation of EPS microplastics.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117769"},"PeriodicalIF":5.3,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143547958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-03DOI: 10.1016/j.marpolbul.2025.117758
Wenlu Li, Fanping Meng
Marine microplastics (MPs), whether originating from household and industrial production or stemming from the degradation of larger plastic fragments, have currently attracted significant global attention among the scientific community. The transport and deposition of MPs, characterized by their small size and large quantity, under oceanic hydrodynamics result in the contamination of a wide range of areas. Furthermore, MPs are capable of carrying metals and organic pollutants that constitute composite pollutants. The additives it carries will gradually release harmful substances during the degradation process. Once ingested by aquatic organisms and amplified by the food chain, these pollutants can adversely affect the survival and growth of marine flora and fauna, ultimately posing potential threats to humans. In this review, the major sources and sinks of MPs are described, considering the pollution of marine ecosystems. Additionally, typical environmental behaviors of MPs including their migration and accumulation in the ocean, their combined ability with heavy metals and organic pollutants, their leaching of additives, and their abiotic and biotic degradation pathways are discussed. The adverse effects on marine organisms resulting from ingestion and translocation of MPs are also reviewed herein. Even though the number of studies on MPs-associated environmental impacts is increasing rapidly, this review underscores that there is a pressing necessity to achieve an integrated assessment of MPs' impacts on marine ecology in order to address existing and future knowledge gaps.
{"title":"Microplastics in marine systems: A review of sources and sinks, typical environmental behaviors, and biological effects","authors":"Wenlu Li, Fanping Meng","doi":"10.1016/j.marpolbul.2025.117758","DOIUrl":"10.1016/j.marpolbul.2025.117758","url":null,"abstract":"<div><div>Marine microplastics (MPs), whether originating from household and industrial production or stemming from the degradation of larger plastic fragments, have currently attracted significant global attention among the scientific community. The transport and deposition of MPs, characterized by their small size and large quantity, under oceanic hydrodynamics result in the contamination of a wide range of areas. Furthermore, MPs are capable of carrying metals and organic pollutants that constitute composite pollutants. The additives it carries will gradually release harmful substances during the degradation process. Once ingested by aquatic organisms and amplified by the food chain, these pollutants can adversely affect the survival and growth of marine flora and fauna, ultimately posing potential threats to humans. In this review, the major sources and sinks of MPs are described, considering the pollution of marine ecosystems. Additionally, typical environmental behaviors of MPs including their migration and accumulation in the ocean, their combined ability with heavy metals and organic pollutants, their leaching of additives, and their abiotic and biotic degradation pathways are discussed. The adverse effects on marine organisms resulting from ingestion and translocation of MPs are also reviewed herein. Even though the number of studies on MPs-associated environmental impacts is increasing rapidly, this review underscores that there is a pressing necessity to achieve an integrated assessment of MPs' impacts on marine ecology in order to address existing and future knowledge gaps.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117758"},"PeriodicalIF":5.3,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-03DOI: 10.1016/j.marpolbul.2025.117754
Ming Xie , Ying Li , Zhaoyi Zhang , Qiang Fu , Huilin Jiang
Oil spills caused by ships can be categorized as accidental and operational oil spills. For operational oil spills caused by illegal discharge, an efficient remote sensing system for routine surveillance on oil spills needs to be established. For the oil spills caused by ship accidents, the quantitative inversion on some key properties provides useful information for treatment and assessment. The spaceborne synthetic aperture radar is mostly used for both operational and the accidental oil spills due to its effectiveness of oil spill detection under various environments. Optical remote sensing is applied in the cases where the detailed information about oil spills needs to be identified. Some other sensing techniques that may be useful to monitor oil spills caused by ships are also discussed. By jointly utilizing various remote sensing techniques, it is expected to form a comprehensive sensing network and prevent the negative consequences caused by oil pollution from ships.
{"title":"Remote sensing of the oil spills caused by ships: A review","authors":"Ming Xie , Ying Li , Zhaoyi Zhang , Qiang Fu , Huilin Jiang","doi":"10.1016/j.marpolbul.2025.117754","DOIUrl":"10.1016/j.marpolbul.2025.117754","url":null,"abstract":"<div><div>Oil spills caused by ships can be categorized as accidental and operational oil spills. For operational oil spills caused by illegal discharge, an efficient remote sensing system for routine surveillance on oil spills needs to be established. For the oil spills caused by ship accidents, the quantitative inversion on some key properties provides useful information for treatment and assessment. The spaceborne synthetic aperture radar is mostly used for both operational and the accidental oil spills due to its effectiveness of oil spill detection under various environments. Optical remote sensing is applied in the cases where the detailed information about oil spills needs to be identified. Some other sensing techniques that may be useful to monitor oil spills caused by ships are also discussed. By jointly utilizing various remote sensing techniques, it is expected to form a comprehensive sensing network and prevent the negative consequences caused by oil pollution from ships.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117754"},"PeriodicalIF":5.3,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-02DOI: 10.1016/j.marpolbul.2025.117634
Imogen E Napper, Bede F R Davies, Aquila Erskine, Richard C Thompson, Rachel Yates, Heather Koldewey
There is limited understanding of how litter abundance, particularly plastic items, varies between coastal and inland regions with different population densities. The absence of standardised data collection methods further complicates comparisons. Moreover, the lack of data for inland areas hampers efforts to identify potential litter sources, pathways, and interventions. In this study, we address these gaps by quantifying and characterising litter across diverse settings in the United Kingdom (UK), encompassing coastal and inland regions, as well as urban and rural areas. Data were collected in collaboration with a major UK charity specialising in coastal litter removal, with 97 volunteers conducting monthly surveys along 200-m transects using a custom mobile application. Over five months, a total of 27,855 litter items were collected. Fragments (33 %), packaging (33 %), and cigarette-related debris (23 %) were the most prevalent litter types, each displaying varying trends in abundance across different locations. Litter density was higher in coastal areas (0.053 items/m2) compared to inland regions (0.030 items/m2), and urban areas consistently exhibited more litter than rural areas (urban 0.046 items/m2 vs. rural 0.038 items/m2). Over time, coastal areas experienced a significantly higher influx of new litter (p < 0.0001) compared to inland regions, where litter levels were stable or decreasing. Notably, while coastal areas showed no significant difference in litter accumulation between urban and rural communities, inland urban areas had significantly more litter than their rural counterparts (p < 0.0001). These findings underscore the importance of considering both geographic region and community type when developing waste management strategies. They also highlight the need for enhanced legislation targeting common litter sources.
{"title":"Citizen science reveals litter trends in the UK: Population density effects on coastal and inland regions.","authors":"Imogen E Napper, Bede F R Davies, Aquila Erskine, Richard C Thompson, Rachel Yates, Heather Koldewey","doi":"10.1016/j.marpolbul.2025.117634","DOIUrl":"https://doi.org/10.1016/j.marpolbul.2025.117634","url":null,"abstract":"<p><p>There is limited understanding of how litter abundance, particularly plastic items, varies between coastal and inland regions with different population densities. The absence of standardised data collection methods further complicates comparisons. Moreover, the lack of data for inland areas hampers efforts to identify potential litter sources, pathways, and interventions. In this study, we address these gaps by quantifying and characterising litter across diverse settings in the United Kingdom (UK), encompassing coastal and inland regions, as well as urban and rural areas. Data were collected in collaboration with a major UK charity specialising in coastal litter removal, with 97 volunteers conducting monthly surveys along 200-m transects using a custom mobile application. Over five months, a total of 27,855 litter items were collected. Fragments (33 %), packaging (33 %), and cigarette-related debris (23 %) were the most prevalent litter types, each displaying varying trends in abundance across different locations. Litter density was higher in coastal areas (0.053 items/m<sup>2</sup>) compared to inland regions (0.030 items/m<sup>2</sup>), and urban areas consistently exhibited more litter than rural areas (urban 0.046 items/m<sup>2</sup> vs. rural 0.038 items/m<sup>2</sup>). Over time, coastal areas experienced a significantly higher influx of new litter (p < 0.0001) compared to inland regions, where litter levels were stable or decreasing. Notably, while coastal areas showed no significant difference in litter accumulation between urban and rural communities, inland urban areas had significantly more litter than their rural counterparts (p < 0.0001). These findings underscore the importance of considering both geographic region and community type when developing waste management strategies. They also highlight the need for enhanced legislation targeting common litter sources.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":" ","pages":"117634"},"PeriodicalIF":5.3,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143586158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01Epub Date: 2024-12-30DOI: 10.1016/j.marpolbul.2024.117498
Yajing Wang, Xuhui Dong, Hanbiao Xian, Yupei Zhang, Yan Li, Yu Wang, Helen Bennion
Coastal lagoons are vital yet vulnerable marine ecosystems. This study analyzes a five-year dataset to evaluate changes in water quality and their impacts on biota in Pinqing Lagoon (PQL). Seasonal surveys conducted from 2019 to 2023 across 14 sites revealed significant variability in water and sediment quality parameters. During the wet summer season, water quality deteriorated significantly as nutrient levels peaked. In contrast, the dry winter season posed a high ecological risk from heavy metals (HMs), specifically Cu, Hg, and Cd, in sediments. Sediment core analysis indicates upward trends in HMs since the 1950s. Salinity and pH are the primary drivers shaping the benthic communities in transitional zones, while nutrients and HMs primarily affect organisms in the inner bay. Nutrient enrichment has exacerbated HM accumulation and ecological degradation, with tolerance to HMs emerging as a critical factor for benthic survival. This comprehensive assessment of PQL highlights the seasonal patterns of pollution in urban lagoons, providing valuable insights for future conservation efforts.
{"title":"Emerging environmental risks to the largest coastal lagoon (Pinqing Lagoon) on the Chinese mainland: Assessment through a water-sediment-ecological perspective.","authors":"Yajing Wang, Xuhui Dong, Hanbiao Xian, Yupei Zhang, Yan Li, Yu Wang, Helen Bennion","doi":"10.1016/j.marpolbul.2024.117498","DOIUrl":"10.1016/j.marpolbul.2024.117498","url":null,"abstract":"<p><p>Coastal lagoons are vital yet vulnerable marine ecosystems. This study analyzes a five-year dataset to evaluate changes in water quality and their impacts on biota in Pinqing Lagoon (PQL). Seasonal surveys conducted from 2019 to 2023 across 14 sites revealed significant variability in water and sediment quality parameters. During the wet summer season, water quality deteriorated significantly as nutrient levels peaked. In contrast, the dry winter season posed a high ecological risk from heavy metals (HMs), specifically Cu, Hg, and Cd, in sediments. Sediment core analysis indicates upward trends in HMs since the 1950s. Salinity and pH are the primary drivers shaping the benthic communities in transitional zones, while nutrients and HMs primarily affect organisms in the inner bay. Nutrient enrichment has exacerbated HM accumulation and ecological degradation, with tolerance to HMs emerging as a critical factor for benthic survival. This comprehensive assessment of PQL highlights the seasonal patterns of pollution in urban lagoons, providing valuable insights for future conservation efforts.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"212 ","pages":"117498"},"PeriodicalIF":5.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142909886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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