Pub Date : 2025-03-10DOI: 10.1016/j.marpolbul.2025.117797
Ifenna Ilechukwu , Mackenzie Stoeltje , Edith Conn , James Davis Reimer
Marine litter pollution has become a global concern due to its adverse effects on biodiversity and general negative influence on marine ecosystem services. Marine litter pollution of remote islands is currently understudied due to accessibility challenges. This study evaluated marine litter abundance and distribution on 15 beaches around semi-remote islands of Ishigaki and Taketomi, Japan. A total of 2161 items weighing 206.01 kg with average density of 0.15 items/m2 were collected from nine beaches around Ishigaki Island while 1098 items weighing 73.62 kg with average density of 0.10 items/m2 were collected from six beaches around Taketomi Island. Shoreline activities, reflecting the variety of human activities on the islands, were the major litter sources at 68.26 % and 90.44 % for Ishigaki and Taketomi islands, respectively. Litter items were dominated by plastics at >80 % for both islands while single-use plastics (SUPs), dominated by PET bottles and caps, constituted 39 % of total litter items on both islands. Clean coast, plastic abundance and hazardous indices employed to assess the beach quality were all within low to moderate levels. This study draws attention to marine litter pollution of remote islands, particularly by plastic items, and recommends effective management of SUPs as the necessary first step towards marine litter reduction.
{"title":"Marine litter on remote islands: Case study of beaches in Ishigaki and Taketomi Islands, Japan","authors":"Ifenna Ilechukwu , Mackenzie Stoeltje , Edith Conn , James Davis Reimer","doi":"10.1016/j.marpolbul.2025.117797","DOIUrl":"10.1016/j.marpolbul.2025.117797","url":null,"abstract":"<div><div>Marine litter pollution has become a global concern due to its adverse effects on biodiversity and general negative influence on marine ecosystem services. Marine litter pollution of remote islands is currently understudied due to accessibility challenges. This study evaluated marine litter abundance and distribution on 15 beaches around semi-remote islands of Ishigaki and Taketomi, Japan. A total of 2161 items weighing 206.01 kg with average density of 0.15 items/m<sup>2</sup> were collected from nine beaches around Ishigaki Island while 1098 items weighing 73.62 kg with average density of 0.10 items/m<sup>2</sup> were collected from six beaches around Taketomi Island. Shoreline activities, reflecting the variety of human activities on the islands, were the major litter sources at 68.26 % and 90.44 % for Ishigaki and Taketomi islands, respectively. Litter items were dominated by plastics at >80 % for both islands while single-use plastics (SUPs), dominated by PET bottles and caps, constituted 39 % of total litter items on both islands. Clean coast, plastic abundance and hazardous indices employed to assess the beach quality were all within low to moderate levels. This study draws attention to marine litter pollution of remote islands, particularly by plastic items, and recommends effective management of SUPs as the necessary first step towards marine litter reduction.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117797"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577496","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 : 2025-03-10DOI: 10.1016/j.marpolbul.2025.117792
Alaa M. Younis , Eman M. Elkady , Naglaa F. Soliman
This paper adds a new perspective to Ras Mohamed Protectorate mangrove sediment quality studies in terms of bioavailability, mobility, human and eco-environmental risk of various potential toxic elements (PTEs). Fe > Mn > Pb > Cu > Cd was the order in which the PTE levels declined. Residual fraction controlled the geochemical speciation of all elements. The following was the order of the mean percentages of mobile elements in sediments: Mn > Fe > Pb > Cu > Cd. All sediment samples had low to moderate risk, according to synergistic indices (GCF, mRAC, PETI-A and PTEI-B). Mn was the primary ecological risk PTE contributor. According to the suggested individual indices, Mn is the most mobile and bioavailable element (0.4–1), whereas Cd, Cu, Fe, and Pb have moderate mobility and bioavailability (MI 0.1–0.4 and BI 0.1–0.4, respectively). The current PTE exposure in sediments did not constitute a significant health concern (THQ < 1 and LCR < 10−4).
{"title":"Fractionation, chemometric analysis, and sophisticated risk assessment indices to appraise sediment contamination of a tropical mangrove forests, the Red Sea","authors":"Alaa M. Younis , Eman M. Elkady , Naglaa F. Soliman","doi":"10.1016/j.marpolbul.2025.117792","DOIUrl":"10.1016/j.marpolbul.2025.117792","url":null,"abstract":"<div><div>This paper adds a new perspective to Ras Mohamed Protectorate mangrove sediment quality studies in terms of bioavailability, mobility, human and eco-environmental risk of various potential toxic elements (PTEs). Fe > Mn > Pb > Cu > Cd was the order in which the PTE levels declined. Residual fraction controlled the geochemical speciation of all elements. The following was the order of the mean percentages of mobile elements in sediments: Mn > Fe > Pb > Cu > Cd. All sediment samples had low to moderate risk, according to synergistic indices (GCF, mRAC, PETI-A and PTEI-B). Mn was the primary ecological risk PTE contributor. According to the suggested individual indices, Mn is the most mobile and bioavailable element (0.4–1), whereas Cd, Cu, Fe, and Pb have moderate mobility and bioavailability (MI 0.1–0.4 and BI 0.1–0.4, respectively). The current PTE exposure in sediments did not constitute a significant health concern (THQ < 1 and LCR < 10<sup>−4</sup>).</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117792"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577497","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 : 2025-03-09DOI: 10.1016/j.marpolbul.2025.117779
Mrunmayee Manjari Sahoo, Janaki Ballav Swain
The proposed comprehensive study was accomplished to analyze the ecological phenomenon, heavy metals occurrence, and its significance. The spatial distribution of heavy metals in the sediments such as Cadmium (Cd), Cobalt (Co), Cupper (Cu), Lead (Pb), Mercury (Hg), Nickel (Ni), Zinc (Zn), Iron (Fe), and Chromium (Cr) of the Eastern coastline of India (ECI) was evaluated across 61 sites along the 1400 km stretch of the Bay of Bengal and the Arabian Sea coastline. The heavy metal concentration was higher for Hg (0.08 μg/g) and Cd (3.44 μg/g), likely due to mining and extraction activities. Strong positive correlations () observed between Cd∼Fe , Cd∼-Cr , Co∼Zn , Cu∼Ni suggesting co-miming sources while negative correlations Ni∼Cr , Ni∼Pb , Cu∼Pb indicate the separation of these metals in sediments due to geochemical conditions and tailing disposal. The heavy metals, Co, Cu, Pb, Ni, Fe, and Cr were under the concentrations proposed by sediment quality guidelines (SQGs). It indicated there is fewer immediate effects of heavy metals, however, even at low levels metals like Hg, Cd, and Pb can cause chronic exposure effects, bioaccumulation and subclinical health impacts over time. The stations of Utkal (UC 14–UC 18) and Coromandel (CC 8–CC 11) coastline act as shipping ports and are involved in mining activities and recorded geological weathering of rocks in these areas, compared to other sampling locations along Utkal, Andhra and Coromandel coastline.
{"title":"Spatial distribution, contamination levels, and risk assessment of heavy metals along the Eastern India coastline","authors":"Mrunmayee Manjari Sahoo, Janaki Ballav Swain","doi":"10.1016/j.marpolbul.2025.117779","DOIUrl":"10.1016/j.marpolbul.2025.117779","url":null,"abstract":"<div><div>The proposed comprehensive study was accomplished to analyze the ecological phenomenon, heavy metals occurrence, and its significance. The spatial distribution of heavy metals in the sediments such as Cadmium (Cd), Cobalt (Co), Cupper (Cu), Lead (Pb), Mercury (Hg), Nickel (Ni), Zinc (Zn), Iron (Fe), and Chromium (Cr) of the Eastern coastline of India (ECI) was evaluated across 61 sites along the 1400 km stretch of the Bay of Bengal and the Arabian Sea coastline. The heavy metal concentration was higher for Hg (0.08 μg/g) and Cd (3.44 μg/g), likely due to mining and extraction activities. Strong positive correlations (<span><math><msup><mi>R</mi><mn>2</mn></msup><mo>></mo><mn>0.5</mn><mo>,</mo><mi>p</mi><mo><</mo><mn>0.01</mn></math></span>) observed between Cd∼Fe <span><math><mfenced><mrow><msup><mi>R</mi><mn>2</mn></msup><mo>=</mo><mn>0.70</mn></mrow></mfenced></math></span>, Cd∼-Cr <span><math><mfenced><mrow><msup><mi>R</mi><mn>2</mn></msup><mo>=</mo><mn>0.68</mn></mrow></mfenced></math></span>, Co∼Zn <span><math><mfenced><mrow><msup><mi>R</mi><mn>2</mn></msup><mo>=</mo><mn>0.79</mn></mrow></mfenced></math></span>, Cu∼Ni <span><math><mfenced><mrow><msup><mi>R</mi><mn>2</mn></msup><mo>=</mo><mn>0.73</mn></mrow></mfenced></math></span> suggesting co-miming sources while negative correlations Ni∼Cr <span><math><mfenced><mrow><msup><mi>R</mi><mn>2</mn></msup><mo>=</mo><mo>−</mo><mn>0.50</mn></mrow></mfenced></math></span>, Ni∼Pb <span><math><mfenced><mrow><msup><mi>R</mi><mn>2</mn></msup><mo>=</mo><mo>−</mo><mn>0.56</mn></mrow></mfenced></math></span>, Cu∼Pb <span><math><mfenced><mrow><msup><mi>R</mi><mn>2</mn></msup><mo>=</mo><mo>−</mo><mn>0.58</mn></mrow></mfenced></math></span> indicate the separation of these metals in sediments due to geochemical conditions and tailing disposal. The heavy metals, Co, Cu, Pb, Ni, Fe, and Cr were under the concentrations proposed by sediment quality guidelines (SQGs). It indicated there is fewer immediate effects of heavy metals, however, even at low levels metals like Hg, Cd, and Pb can cause chronic exposure effects, bioaccumulation and subclinical health impacts over time. The stations of Utkal (UC 14–UC 18) and Coromandel (CC 8–CC 11) coastline act as shipping ports and are involved in mining activities and recorded geological weathering of rocks in these areas, compared to other sampling locations along Utkal, Andhra and Coromandel coastline.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117779"},"PeriodicalIF":5.3,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577252","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 : 2025-03-09DOI: 10.1016/j.marpolbul.2025.117789
S. van Elden , H. Fasca , J.J. Meeuwig
More than 28,000 fixed structures are found throughout the world's continental shelf waters. This infrastructure can have significant ecological value but can also facilitate dominant invasive species. One such taxon is Tubastraea (Dendrophyllidae), several species of which are found throughout the Indian and Pacific Oceans and have invaded the Atlantic Ocean, where their impacts are well-studied. High abundances of Tubastraea on ocean infrastructure have been documented in their native range, particularly in Australia, where we argue Tubastraea should be classified as native dominant invaders. It is critical that we gain a better understanding of the ecological role played by Tubastraea, as this may have significant implications for the decommissioning of ocean infrastructure in both the non-native and native ranges of these species. Countries where Tubastraea are native should be alert to these dominant invasive species, and consider how new habitats such as ocean infrastructure can facilitate native invasions.
{"title":"Conservation implications of dominant species associated with ocean infrastructure: The genus Tubastraea (Dendrophyllidae)","authors":"S. van Elden , H. Fasca , J.J. Meeuwig","doi":"10.1016/j.marpolbul.2025.117789","DOIUrl":"10.1016/j.marpolbul.2025.117789","url":null,"abstract":"<div><div>More than 28,000 fixed structures are found throughout the world's continental shelf waters. This infrastructure can have significant ecological value but can also facilitate dominant invasive species. One such taxon is <em>Tubastraea</em> (Dendrophyllidae), several species of which are found throughout the Indian and Pacific Oceans and have invaded the Atlantic Ocean, where their impacts are well-studied. High abundances of <em>Tubastraea</em> on ocean infrastructure have been documented in their native range, particularly in Australia, where we argue <em>Tubastraea</em> should be classified as native dominant invaders. It is critical that we gain a better understanding of the ecological role played by <em>Tubastraea,</em> as this may have significant implications for the decommissioning of ocean infrastructure in both the non-native and native ranges of these species. Countries where <em>Tubastraea</em> are native should be alert to these dominant invasive species, and consider how new habitats such as ocean infrastructure can facilitate native invasions.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117789"},"PeriodicalIF":5.3,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-09DOI: 10.1016/j.marpolbul.2025.117796
Nebil Yücel, Ece Kılıç
Microplastics (MPs) are ubiquitous pollutants in marine environment and monitoring studies have been conducted to understand microplastic presence in aquatic biota. However, studies addressing the microplastic abundance in invertible species are scant. This study aims to investigate presence of ingested microplastics in three commercial shrimp species (Metapenaeus monoceros, Plesionika martia and Melicertus hathor). Mean microplastic abundance (with standard error) in the digestive organs was found as 0.76 ± 1.0 MPs/ind and 0.86 ± 1.5 MPs/g wet weight. No significant difference was detected between species. Fiber (87 %), black (53 %), <500 μm (62 %) microplastic particles was dominant. A negative correlation was found between shrimp weight and ingested microplastic amount (r:-0.46, p:0.005). FTIR analysis showed polyethylene (PE) and polypropylene (PP) as identified polymers. Results proved microplastic exposure in shrimp species from İskenderun Bay and average of 14 to 441 MPs per year could be transferred to human body upon consumption. Therefore, study results showed the microplastic exposure risk depending on consumption of crustacean species and underlined the need of protective measures.
{"title":"Occurrence and human exposure risk of microplastics in commercially important shrimp species from Northeastern Mediterranean Sea","authors":"Nebil Yücel, Ece Kılıç","doi":"10.1016/j.marpolbul.2025.117796","DOIUrl":"10.1016/j.marpolbul.2025.117796","url":null,"abstract":"<div><div>Microplastics (MPs) are ubiquitous pollutants in marine environment and monitoring studies have been conducted to understand microplastic presence in aquatic biota. However, studies addressing the microplastic abundance in invertible species are scant. This study aims to investigate presence of ingested microplastics in three commercial shrimp species (<em>Metapenaeus monoceros, Plesionika martia</em> and <em>Melicertus hathor)</em>. Mean microplastic abundance (with standard error) in the digestive organs was found as 0.76 ± 1.0 MPs/ind and 0.86 ± 1.5 MPs/g wet weight. No significant difference was detected between species. Fiber (87 %), black (53 %), <500 μm (62 %) microplastic particles was dominant. A negative correlation was found between shrimp weight and ingested microplastic amount (r:-0.46, p:0.005). FTIR analysis showed polyethylene (PE) and polypropylene (PP) as identified polymers. Results proved microplastic exposure in shrimp species from İskenderun Bay and average of 14 to 441 MPs per year could be transferred to human body upon consumption. Therefore, study results showed the microplastic exposure risk depending on consumption of crustacean species and underlined the need of protective measures.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117796"},"PeriodicalIF":5.3,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577251","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 : 2025-03-09DOI: 10.1016/j.marpolbul.2025.117795
Zhirui Zhang , Sha Lou , Shuguang Liu , Zhongyuan Yang , Shizhe Chen , Yuwen Zou , Irina Viktorovna Fedorova
Accumulation of heavy metals in estuaries can represent potential risks to the aquatic environment and public health. Estuarine coastal vegetation's physical form and biological function have important effects on dynamic processes and migration of pollutants in estuaries. Field observations were conducted at sites SJG and LHK in the Yangtze River Estuary (YRE) from September 2021 to February 2022 and September 2022 to December 2022. Site LHK (Liuhekou) represents a typical natural environment, whereas Site SJG (Sanjiagang) is more significantly influenced by anthropogenic activities. At both sites, samples of unvegetated sediments, vegetated sediment, and vegetation were collected and analyzed for six heavy metals (As, Cd, Cr, Pb, Cu, Zn). The sequence of heavy metal concentrations in both sediments and vegetation was as follows: Zn > Cr > As > Pb > Cu > Cd. The results of the contamination assessment indicated that the risk of heavy metal contamination was higher at SJG than at LHK. Cr, As, and Cd were identified as pollutants, with Cd posing the main potential ecological risk. Correlation and principal component analyses indicated that anthropogenic emissions and atmospheric deposition were the main sources of heavy metal contamination, with vegetation exhibiting elemental variability in heavy metal interception. Phytobiological analyses of the pollutant elements Cr, As, and Cd indicated that phytobiology's attenuation of sediment heavy metal contamination was significant based on metabolic processes. However, the hyper-enrichment of Cd was independent of metabolism, with its concentration stabilizing around biotoxic levels. The results in this paper promote a deeper understanding of heavy metal mitigation under the biological effectiveness of vegetation in coastal areas of the Yangtze River Estuary. The proposed analytical method provides ideas for the study of contaminant partitioning under the influence of vegetation in estuaries and coastal water environments.
{"title":"Vegetation morphology and phytobiology intervene in heavy metal contamination of surface sediments in Yangtze River Estuary","authors":"Zhirui Zhang , Sha Lou , Shuguang Liu , Zhongyuan Yang , Shizhe Chen , Yuwen Zou , Irina Viktorovna Fedorova","doi":"10.1016/j.marpolbul.2025.117795","DOIUrl":"10.1016/j.marpolbul.2025.117795","url":null,"abstract":"<div><div>Accumulation of heavy metals in estuaries can represent potential risks to the aquatic environment and public health. Estuarine coastal vegetation's physical form and biological function have important effects on dynamic processes and migration of pollutants in estuaries. Field observations were conducted at sites SJG and LHK in the Yangtze River Estuary (YRE) from September 2021 to February 2022 and September 2022 to December 2022. Site LHK (Liuhekou) represents a typical natural environment, whereas Site SJG (Sanjiagang) is more significantly influenced by anthropogenic activities. At both sites, samples of unvegetated sediments, vegetated sediment, and vegetation were collected and analyzed for six heavy metals (As, Cd, Cr, Pb, Cu, Zn). The sequence of heavy metal concentrations in both sediments and vegetation was as follows: Zn > Cr > As > Pb > Cu > Cd. The results of the contamination assessment indicated that the risk of heavy metal contamination was higher at SJG than at LHK. Cr, As, and Cd were identified as pollutants, with Cd posing the main potential ecological risk. Correlation and principal component analyses indicated that anthropogenic emissions and atmospheric deposition were the main sources of heavy metal contamination, with vegetation exhibiting elemental variability in heavy metal interception. Phytobiological analyses of the pollutant elements Cr, As, and Cd indicated that phytobiology's attenuation of sediment heavy metal contamination was significant based on metabolic processes. However, the hyper-enrichment of Cd was independent of metabolism, with its concentration stabilizing around biotoxic levels. The results in this paper promote a deeper understanding of heavy metal mitigation under the biological effectiveness of vegetation in coastal areas of the Yangtze River Estuary. The proposed analytical method provides ideas for the study of contaminant partitioning under the influence of vegetation in estuaries and coastal water environments.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117795"},"PeriodicalIF":5.3,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577248","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 : 2025-03-09DOI: 10.1016/j.marpolbul.2025.117794
Fernanda Dittmar Cardoso , Egon Abraão de Paula Ramos , Alessandra Larissa Fonseca , Patrícia Gomes Costa , Adalto Bianchini , Andre Andrian Padial
Dam accidents, often resulting from inadequate structural monitoring, pose significant environmental risks. In southern Brazil, the rupture of an evaporation-infiltration lagoon released over 500,000 m3 of treated domestic effluent into a coastal lagoon, raising concerns about potential contamination from nutrients and heavy metals. This study aimed to (1) assess the environment's self-purification capacity regarding dissolved nutrients, (2) determine total heavy metal concentrations in water and sediments throughout the coastal lagoon using inductively coupled plasma mass spectrometry, (3) correlate variables influencing heavy metal availability to identify potential sources, and (4) evaluate environmental risks by comparing concentrations to established water and sediment quality guidelines. Potential sources of contamination included natural origins, boat traffic associated with fuel leaks and antifouling paints, and the irregular discharge of domestic effluents into the lagoon. The results revealed nutrient self-purification and elevated arsenic levels in the water, likely from natural sources. However, manganese and zinc concentrations exceeded water quality limits, while zinc and copper levels were notably high in northern sediments, with no definitive association to the dam's sludge. These findings highlight significant toxicity risks to biota and emphasize the need for continuous monitoring. Mitigation strategies should be implemented, particularly in the most contaminated areas, given the lagoon's intense use for recreation and seafood harvesting. Overall, the results reinforce the threat of pollution to biodiversity, ecosystem services, the livelihoods of fishing communities, and the local economy, emphasizing the importance of this study in guiding management actions amidst significant challenges.
{"title":"Arsenic and heavy metals contamination by effluent dam rupture in a subtropical coastal lagoon","authors":"Fernanda Dittmar Cardoso , Egon Abraão de Paula Ramos , Alessandra Larissa Fonseca , Patrícia Gomes Costa , Adalto Bianchini , Andre Andrian Padial","doi":"10.1016/j.marpolbul.2025.117794","DOIUrl":"10.1016/j.marpolbul.2025.117794","url":null,"abstract":"<div><div>Dam accidents, often resulting from inadequate structural monitoring, pose significant environmental risks. In southern Brazil, the rupture of an evaporation-infiltration lagoon released over 500,000 m<sup>3</sup> of treated domestic effluent into a coastal lagoon, raising concerns about potential contamination from nutrients and heavy metals. This study aimed to (1) assess the environment's self-purification capacity regarding dissolved nutrients, (2) determine total heavy metal concentrations in water and sediments throughout the coastal lagoon using inductively coupled plasma mass spectrometry, (3) correlate variables influencing heavy metal availability to identify potential sources, and (4) evaluate environmental risks by comparing concentrations to established water and sediment quality guidelines. Potential sources of contamination included natural origins, boat traffic associated with fuel leaks and antifouling paints, and the irregular discharge of domestic effluents into the lagoon. The results revealed nutrient self-purification and elevated arsenic levels in the water, likely from natural sources. However, manganese and zinc concentrations exceeded water quality limits, while zinc and copper levels were notably high in northern sediments, with no definitive association to the dam's sludge. These findings highlight significant toxicity risks to biota and emphasize the need for continuous monitoring. Mitigation strategies should be implemented, particularly in the most contaminated areas, given the lagoon's intense use for recreation and seafood harvesting. Overall, the results reinforce the threat of pollution to biodiversity, ecosystem services, the livelihoods of fishing communities, and the local economy, emphasizing the importance of this study in guiding management actions amidst significant challenges.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117794"},"PeriodicalIF":5.3,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577495","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 : 2025-03-09DOI: 10.1016/j.marpolbul.2025.117728
Niklas Czerner , Christian Windt , Nils Goseberg
A vast number of artificial marine structures are currently installed offshore, and the rate of new installation is increasing. Especially offshore wind farms, a sub-type of artificial marine structures, are expected to grow significantly due to ambitious installation targets from international decision-makers. With increasing numbers of installed artificial marine structures, an assessment of possible adverse effects is more important than ever. To improve the environmental friendliness of artificial marine structures, an in-depth assessment of the transport and environmental fate of particle emissions is needed. The present work provides an overview of the involved processes of particle transport in the marine environment using the example of an offshore wind turbine. In this work, a first estimation on emission quantities is given for particulate emissions from marine structures, from which it is evident that emissions will increase in the next years due to an increasing number of marine structures.
{"title":"Transport mechanisms of particulate emissions from artificial marine structures – A review","authors":"Niklas Czerner , Christian Windt , Nils Goseberg","doi":"10.1016/j.marpolbul.2025.117728","DOIUrl":"10.1016/j.marpolbul.2025.117728","url":null,"abstract":"<div><div>A vast number of artificial marine structures are currently installed offshore, and the rate of new installation is increasing. Especially offshore wind farms, a sub-type of artificial marine structures, are expected to grow significantly due to ambitious installation targets from international decision-makers. With increasing numbers of installed artificial marine structures, an assessment of possible adverse effects is more important than ever. To improve the environmental friendliness of artificial marine structures, an in-depth assessment of the transport and environmental fate of particle emissions is needed. The present work provides an overview of the involved processes of particle transport in the marine environment using the example of an offshore wind turbine. In this work, a first estimation on emission quantities is given for particulate emissions from marine structures, from which it is evident that emissions will increase in the next years due to an increasing number of marine structures.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117728"},"PeriodicalIF":5.3,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-08DOI: 10.1016/j.marpolbul.2025.117761
Nora Expósito , Jordi Sierra , Esther Martí , Jaume Folch , Nuno Ratola , Marta Schuhmacher , Joaquim Rovira
The aim of this study is the characterization of microplastics (60 μm −5 mm) on Catalan beaches. It takes into consideration factors as sand size distribution, geomorphology, meteorological parameters and anthropogenic pressures. MPs were measured in seventy (n = 70) intertidal sand samples covering 580 km coastline. After dry sieving the fraction over 0.5 mm was analysed by visual sorting and FTIR techniques. The fraction below 0.5 mm was separated by wet density separation processes, oxidation of organic matter and then analysed by Nile Red staining and fluorescence microscopy. A subset of samples (n = 23) was also subjected to μ-FTIR techniques for compositional analysis in order to compare and confirm the results given by the staining method. The concentration of MP > 0.5 mm ranged from <0.55 to 56.8 MPs/kg (60 % fragments). For sizes 60 μm-0.5 mm it varied from 0 to 2013 MPs/kg (70 % fibres). Polyethylene, polypropylene, polyethylene terephthalate, and polystyrene composed most fragments. Polyester, polyamide, polypropylene and acrylic constituted fibres. Although spectroscopy (μFTIR) is needed to confirm the results, the staining method can be a screening strategy to detect hotspots and provided good approximations for MPs quantification. Only sand particle size is correlated with MPs concentration. Sewage treatment plant discharges, runoff, and local ocean currents might all be significant in the accumulation of MPs along the coast.
{"title":"Detection of microplastic hotspots in beach sand for national surveys using fluorescence microscopy and infrared spectroscopy: Case study on the Catalan coast","authors":"Nora Expósito , Jordi Sierra , Esther Martí , Jaume Folch , Nuno Ratola , Marta Schuhmacher , Joaquim Rovira","doi":"10.1016/j.marpolbul.2025.117761","DOIUrl":"10.1016/j.marpolbul.2025.117761","url":null,"abstract":"<div><div>The aim of this study is the characterization of microplastics (60 μm −5 mm) on Catalan beaches. It takes into consideration factors as sand size distribution, geomorphology, meteorological parameters and anthropogenic pressures. MPs were measured in seventy (<em>n</em> = 70) intertidal sand samples covering 580 km coastline. After dry sieving the fraction over 0.5 mm was analysed by visual sorting and FTIR techniques. The fraction below 0.5 mm was separated by wet density separation processes, oxidation of organic matter and then analysed by Nile Red staining and fluorescence microscopy. A subset of samples (<em>n</em> = 23) was also subjected to μ-FTIR techniques for compositional analysis in order to compare and confirm the results given by the staining method. The concentration of MP > 0.5 mm ranged from <0.55 to 56.8 MPs/kg (60 % fragments). For sizes 60 μm-0.5 mm it varied from 0 to 2013 MPs/kg (70 % fibres). Polyethylene, polypropylene, polyethylene terephthalate, and polystyrene composed most fragments. Polyester, polyamide, polypropylene and acrylic constituted fibres. Although spectroscopy (μFTIR) is needed to confirm the results, the staining method can be a screening strategy to detect hotspots and provided good approximations for MPs quantification. Only sand particle size is correlated with MPs concentration. Sewage treatment plant discharges, runoff, and local ocean currents might all be significant in the accumulation of MPs along the coast.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117761"},"PeriodicalIF":5.3,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577246","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 : 2025-03-08DOI: 10.1016/j.marpolbul.2025.117753
Cemile Solak-Fiskin , Mehmet Cihan , Mustafa Remzi Gül
Non-indigenous species (NIS) pose a significant threat to society and the ecosystem in the Mediterranean Sea as well as global ecosystems. These species are introduced into marine environments through a combination of various vectors that are likely interconnected. Therefore, this study collectively investigates shipping activities, environmental dynamics, and socioeconomic factors as causative drivers of NIS incidence in the Mediterranean Sea. For this purpose, data sets covering the period between 1993 and 2023 were retrieved from various online databases. The model overall largely explained the incidence rate of NIS (79.3 %) in the Mediterranean Sea. The relative contribution of the selected variables varied between 17.1 % and 7.6 %, population and bulk carrier ships, respectively. Consequently, while some of the examined variables were more important than others, this study clearly indicated that all these causative drivers need to be collectively considered for efficient management strategies of NIS.
{"title":"The collective effects of potential drivers on the incidence of non-indigenous species in the Mediterranean: A long-term investigation","authors":"Cemile Solak-Fiskin , Mehmet Cihan , Mustafa Remzi Gül","doi":"10.1016/j.marpolbul.2025.117753","DOIUrl":"10.1016/j.marpolbul.2025.117753","url":null,"abstract":"<div><div>Non-indigenous species (NIS) pose a significant threat to society and the ecosystem in the Mediterranean Sea as well as global ecosystems. These species are introduced into marine environments through a combination of various vectors that are likely interconnected. Therefore, this study collectively investigates shipping activities, environmental dynamics, and socioeconomic factors as causative drivers of NIS incidence in the Mediterranean Sea. For this purpose, data sets covering the period between 1993 and 2023 were retrieved from various online databases. The model overall largely explained the incidence rate of NIS (79.3 %) in the Mediterranean Sea. The relative contribution of the selected variables varied between 17.1 % and 7.6 %, population and bulk carrier ships, respectively. Consequently, while some of the examined variables were more important than others, this study clearly indicated that all these causative drivers need to be collectively considered for efficient management strategies of NIS.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"214 ","pages":"Article 117753"},"PeriodicalIF":5.3,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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