Pub Date : 2025-02-19DOI: 10.1016/j.marpolbul.2025.117699
Tamar Guy-Haim , Vincent M.P. Bouchet
Benthic foraminifera, as key components of marine and transitional ecosystems, provide a valuable opportunity to investigate the effects of environmental changes on marine biodiversity. While traditional taxonomic approaches have been instrumental in assessing benthic foraminifera assemblages, a trait-based approach offers a more holistic perspective on their ecological roles. This study introduces a framework for biological trait analysis (BTA) of benthic foraminifera, emphasizing the importance of morphological, physiological, and ecological traits. We examine the potential of morphogroup analysis as a precursor to BTA, acknowledging its limitations, and propose a list of functional traits relevant to benthic foraminifera. These include both response and effect traits, such as wall texture, test size, chamber arrangement, chamber disposition, pore density, pore size, life mode, feeding mode, bioturbation mode, respiration mode, association and indicative value. Additionally, we address the challenges and opportunities associated with quantifying and analyzing foraminiferal functional traits, and outline key statistical methods for exploring trait-environment relationships. By implementing BTA, we can evaluate the functional diversity and ecological roles of foraminiferal communities, identify the drivers of community structure, predict responses to environmental changes, and assess the impacts of anthropogenic disturbances on marine ecosystems.
{"title":"Beyond taxonomy: A framework for biological trait analysis to assess the functional structure of benthic foraminiferal communities","authors":"Tamar Guy-Haim , Vincent M.P. Bouchet","doi":"10.1016/j.marpolbul.2025.117699","DOIUrl":"10.1016/j.marpolbul.2025.117699","url":null,"abstract":"<div><div>Benthic foraminifera, as key components of marine and transitional ecosystems, provide a valuable opportunity to investigate the effects of environmental changes on marine biodiversity. While traditional taxonomic approaches have been instrumental in assessing benthic foraminifera assemblages, a trait-based approach offers a more holistic perspective on their ecological roles. This study introduces a framework for biological trait analysis (BTA) of benthic foraminifera, emphasizing the importance of morphological, physiological, and ecological traits. We examine the potential of morphogroup analysis as a precursor to BTA, acknowledging its limitations, and propose a list of functional traits relevant to benthic foraminifera. These include both response and effect traits, such as wall texture, test size, chamber arrangement, chamber disposition, pore density, pore size, life mode, feeding mode, bioturbation mode, respiration mode, association and indicative value. Additionally, we address the challenges and opportunities associated with quantifying and analyzing foraminiferal functional traits, and outline key statistical methods for exploring trait-environment relationships. By implementing BTA, we can evaluate the functional diversity and ecological roles of foraminiferal communities, identify the drivers of community structure, predict responses to environmental changes, and assess the impacts of anthropogenic disturbances on marine ecosystems.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"213 ","pages":"Article 117699"},"PeriodicalIF":5.3,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437704","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 : 2025-02-18DOI: 10.1016/j.marpolbul.2025.117693
Zongxiao Zhang , Yonghui Wang , Zeyuan Dai , Tianyang Liu , Yan Qin , Donglei Sun , Cheng Liu , Siqi Li
Our study explores the ecological niche and environmental adaptability of nirS- and nirK-type denitrifying microbial in the Yellow River estuary. Our findings indicate that anthropogenic nitrogen loading has precipitated substantial ecological challenges within these ecosystems. By assessing the biogeographical distribution and community assembly mechanisms of denitrifying microbial, we identified salinity as a pivotal factor influencing their diversity and prevalence, with increased salinity levels positively associated with enhanced microbial populations. Additionally, our research suggests that stochastic processes predominantly govern the assembly of nirS-type communities, whereas deterministic processes are more influential for nirK-type communities. Network analysis further revealed that denitrifying microbial communities in low-salinity areas exhibit greater complexity and modularity. Integrating microbial ecological and phylogenetic analysis with structural equation modeling, we established a link between microbial community characteristics and denitrification rates, underscoring the significance of microbial community understanding for effective ecosystem management.
{"title":"Ecological niche and environmental adaptability of denitrifiers in the yellow river estuary","authors":"Zongxiao Zhang , Yonghui Wang , Zeyuan Dai , Tianyang Liu , Yan Qin , Donglei Sun , Cheng Liu , Siqi Li","doi":"10.1016/j.marpolbul.2025.117693","DOIUrl":"10.1016/j.marpolbul.2025.117693","url":null,"abstract":"<div><div>Our study explores the ecological niche and environmental adaptability of <em>nirS</em>- and <em>nirK</em>-type denitrifying microbial in the Yellow River estuary. Our findings indicate that anthropogenic nitrogen loading has precipitated substantial ecological challenges within these ecosystems. By assessing the biogeographical distribution and community assembly mechanisms of denitrifying microbial, we identified salinity as a pivotal factor influencing their diversity and prevalence, with increased salinity levels positively associated with enhanced microbial populations. Additionally, our research suggests that stochastic processes predominantly govern the assembly of <em>nirS</em>-type communities, whereas deterministic processes are more influential for <em>nirK</em>-type communities. Network analysis further revealed that denitrifying microbial communities in low-salinity areas exhibit greater complexity and modularity. Integrating microbial ecological and phylogenetic analysis with structural equation modeling, we established a link between microbial community characteristics and denitrification rates, underscoring the significance of microbial community understanding for effective ecosystem management.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"213 ","pages":"Article 117693"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437703","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}
Small benthic scavengers and carnivores, such as polychaetes, are very interesting to assess the accumulation and transfer of microplastics (MPs) to higher trophic levels in marine ecosystems. In this study we evaluate the presence, accumulation and impacts of MPs in the North-Atlantic deep-sea polychaete Laetmonice filicornis. Three types of MPs were identified: fishing lines, fibres and fragments, mostly black in colour, followed by red and blue ones. The average number of MPs was 4.10 ± 1.90 particles/g tissue. Fibres were the most abundant. They were composed of Polypropylene, Rayon, Polyethyleneimine Cellulose and Polyester. The histological analysis revealed the presence of microfibres embedded in muscles, peritoneum, nephridia, gonads and blood vessels, which can have a direct impact on vital functions, such as feeding and reproduction. This species occupies both predator and prey roles, bioaccumulate MPs and can transfer them to higher trophic links, representing a significant threat to all marine species, including humans.
{"title":"Microplastic accumulation and histological effects on the Atlantic deep-sea scale-worm Laetmonice filicornis","authors":"Esteban Pascual-Parra , Sergio Villoria-Calvo , Ricardo López-Alonso, Natalia Vigil-Robles, Andrés Arias","doi":"10.1016/j.marpolbul.2025.117689","DOIUrl":"10.1016/j.marpolbul.2025.117689","url":null,"abstract":"<div><div>Small benthic scavengers and carnivores, such as polychaetes, are very interesting to assess the accumulation and transfer of microplastics (MPs) to higher trophic levels in marine ecosystems. In this study we evaluate the presence, accumulation and impacts of MPs in the North-Atlantic deep-sea polychaete <em>Laetmonice filicornis</em>. Three types of MPs were identified: fishing lines, fibres and fragments, mostly black in colour, followed by red and blue ones. The average number of MPs was 4.10 ± 1.90 particles/g tissue. Fibres were the most abundant. They were composed of Polypropylene, Rayon, Polyethyleneimine Cellulose and Polyester. The histological analysis revealed the presence of microfibres embedded in muscles, peritoneum, nephridia, gonads and blood vessels, which can have a direct impact on vital functions, such as feeding and reproduction. This species occupies both predator and prey roles, bioaccumulate MPs and can transfer them to higher trophic links, representing a significant threat to all marine species, including humans.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"213 ","pages":"Article 117689"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428949","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 : 2025-02-18DOI: 10.1016/j.marpolbul.2025.117694
Lília P. Souza-Santos , Yasmin M.M. Carneiro , Andréa Shirley X. da Silva
The hypothesis tested here is a direct relationship between microbiological and ecotoxicological quality on beaches. Seawater was collected weekly for one year in Northeast Brazil. The quantification of thermotolerant coliforms was obtained using the multiple tube technique. The ecotoxicological bioassay utilized the nauplii of the copepod Tisbe biminiensis. The percentage of development and survival was estimated after 72 h. Rainfall, salinity, tidal height and amplitude were analyzed. The results didn't demonstrate a relationship between the density of coliforms and lethal effects, thus rejecting the proposed hypothesis. This result suggested that sewage contamination passed through riverine plumes before arrives the beaches and coliforms died in this long way. Higher toxicity was observed during dry periods, probably due to high contaminant concentration due to lower river discharge. Other hypotheses are proposed to explain the data as higher rainfall observed in 2022 and the negative effect of population use.
{"title":"Weekly variation of seawater ecotoxicity on marine sandy beaches in relation to coliform densities","authors":"Lília P. Souza-Santos , Yasmin M.M. Carneiro , Andréa Shirley X. da Silva","doi":"10.1016/j.marpolbul.2025.117694","DOIUrl":"10.1016/j.marpolbul.2025.117694","url":null,"abstract":"<div><div>The hypothesis tested here is a direct relationship between microbiological and ecotoxicological quality on beaches. Seawater was collected weekly for one year in Northeast Brazil. The quantification of thermotolerant coliforms was obtained using the multiple tube technique. The ecotoxicological bioassay utilized the nauplii of the copepod <em>Tisbe biminiensis</em>. The percentage of development and survival was estimated after 72 h. Rainfall, salinity, tidal height and amplitude were analyzed. The results didn't demonstrate a relationship between the density of coliforms and lethal effects, thus rejecting the proposed hypothesis. This result suggested that sewage contamination passed through riverine plumes before arrives the beaches and coliforms died in this long way. Higher toxicity was observed during dry periods, probably due to high contaminant concentration due to lower river discharge. Other hypotheses are proposed to explain the data as higher rainfall observed in 2022 and the negative effect of population use.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"213 ","pages":"Article 117694"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437702","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 : 2025-02-18DOI: 10.1016/j.marpolbul.2025.117590
Rachel S. Chen , Erik T. Paulson , Amina T. Schartup , C. Anela Choy
Monitoring the impacts of global efforts to reduce mercury (Hg) emissions is limited by the collection of biological samples at appropriate spatiotemporal scales. This is especially true in the deep sea, a vast region with food webs that cycle bioaccumulative methylmercury (MeHg). Within a species, understanding the distribution of Hg across tissue types can reveal how Hg accumulates in the body and inform how useful a species is for biomonitoring geographic regions or vertical habitats of the ocean. We focus on a globally distributed deep-sea fish, the longnose lancetfish (Alepisaurus ferox, n = 69 individuals), and measure total mercury (THg) and MeHg concentrations in 10 tissue types (brain, caudal white muscle, dorsal white muscle, gallbladder, gill filament, gonad, heart, intestine, liver, and stomach lining). Across all tissue types, THg and MeHg concentrations were higher in large lancetfish (≥1.8 kg) than small lancetfish (<1.8 kg), but concentrations were relatively stable within size classes. THg levels were highest in liver, intestine, and heart, followed by caudal white muscle, dorsal white muscle, stomach lining, and gill filament, then by gonad and gallbladder. We describe how ontogenetic diet shifts explain Hg bioaccumulation in pelagic predators inhabiting similar waters to lancetfish. We hypothesize that diet shifts to deeper-dwelling prey and fishes drive increases in THg and MeHg concentrations in large lancetfish. We propose lancetfish as a strong candidate for monitoring spatiotemporal variability of Hg in the deep pelagic – they are commonly captured in global fisheries and may reflect Hg sources in two distinct vertical habitats of the ocean.
{"title":"Diet shifts drive mercury bioaccumulation and distribution in tissues of the longnose lancetfish (Alepisaurus ferox)","authors":"Rachel S. Chen , Erik T. Paulson , Amina T. Schartup , C. Anela Choy","doi":"10.1016/j.marpolbul.2025.117590","DOIUrl":"10.1016/j.marpolbul.2025.117590","url":null,"abstract":"<div><div>Monitoring the impacts of global efforts to reduce mercury (Hg) emissions is limited by the collection of biological samples at appropriate spatiotemporal scales. This is especially true in the deep sea, a vast region with food webs that cycle bioaccumulative methylmercury (MeHg). Within a species, understanding the distribution of Hg across tissue types can reveal how Hg accumulates in the body and inform how useful a species is for biomonitoring geographic regions or vertical habitats of the ocean. We focus on a globally distributed deep-sea fish, the longnose lancetfish (<em>Alepisaurus ferox</em>, <em>n</em> = 69 individuals), and measure total mercury (THg) and MeHg concentrations in 10 tissue types (brain, caudal white muscle, dorsal white muscle, gallbladder, gill filament, gonad, heart, intestine, liver, and stomach lining). Across all tissue types, THg and MeHg concentrations were higher in large lancetfish (≥1.8 kg) than small lancetfish (<1.8 kg), but concentrations were relatively stable within size classes. THg levels were highest in liver, intestine, and heart, followed by caudal white muscle, dorsal white muscle, stomach lining, and gill filament, then by gonad and gallbladder. We describe how ontogenetic diet shifts explain Hg bioaccumulation in pelagic predators inhabiting similar waters to lancetfish. We hypothesize that diet shifts to deeper-dwelling prey and fishes drive increases in THg and MeHg concentrations in large lancetfish. We propose lancetfish as a strong candidate for monitoring spatiotemporal variability of Hg in the deep pelagic – they are commonly captured in global fisheries and may reflect Hg sources in two distinct vertical habitats of the ocean.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"213 ","pages":"Article 117590"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428950","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 : 2025-02-18DOI: 10.1016/j.marpolbul.2025.117700
J.K. Patterson Edward , M. Jayanthi , Haraldur A. Einarsson , R. Kannan , R.L. Laju , K. Immaculate Jeyasanta , Narmatha Sathish , Jamila Patterson
Coastal environment provides economic, recreational, and aesthetic benefits, serving as a habitat for diverse species. This study assessed beach litter across 52 coastal villages in 13 districts of Tamil Nadu, India, examining its magnitude, sources, composition, and pollution status. The average litter density was 1.14 items/m2 (0.05 kg/m2), with significant site variation. Abandoned, Lost, or Discarded Fishing Gear (ALDFG) constituted 47.46% of the litter, plastics 39.64 %, and non-plastic items 12.9 %. Pudukottai district showed the highest concentration, with 2.68 items/m2 and 0.20 kg/m2. ALDFG magnitude was estimated at 4554 tons per annum, based on a FAO surveys and Bootstrap method. Polyethylene identified as the dominant polymer through FTIR analysis, highlighting challenges in waste management. Management strategies for ALDFG include enforcing regulations, promoting sustainable gear designs, implementing Extended Producer Responsibility policies, and enhancing waste reception facilities. Industry inventions to reduce packaging waste by adopting eco-friendly alternatives and zero plastic production are crucial. While clean-up measures are necessary, prevention measures, industry collaboration, and waste disposal facilities remain vital for long term improvements. Pollution indices such as Clean Coast Index reveal a dire situation: 31 % of beaches are dirty and 46 % extremely dirty and 62 % of the study area is categorised as extremely dirty by the Clean Environment Index. The Plastic Abundance Index shows high plastic waste on 39 % of beaches and the Hazardous Litter Index indicates 62 % beaches have widespread hazardous litter. These findings highlight the urgent need for integrated pollution management to restore and protect Tamil Nadu coastal environment.
{"title":"Assessment of beach litter, including Abandoned, Lost, or Discarded Fishing Gear (ALDFG), along the coast of Tamil Nadu, India: Magnitude, sources, composition, pollution status, and management strategies","authors":"J.K. Patterson Edward , M. Jayanthi , Haraldur A. Einarsson , R. Kannan , R.L. Laju , K. Immaculate Jeyasanta , Narmatha Sathish , Jamila Patterson","doi":"10.1016/j.marpolbul.2025.117700","DOIUrl":"10.1016/j.marpolbul.2025.117700","url":null,"abstract":"<div><div>Coastal environment provides economic, recreational, and aesthetic benefits, serving as a habitat for diverse species. This study assessed beach litter across 52 coastal villages in 13 districts of Tamil Nadu, India, examining its magnitude, sources, composition, and pollution status. The average litter density was 1.14 items/m<sup>2</sup> (0.05 kg/m<sup>2</sup>), with significant site variation. Abandoned, Lost, or Discarded Fishing Gear (ALDFG) constituted 47.46% of the litter, plastics 39.64 %, and non-plastic items 12.9 %. Pudukottai district showed the highest concentration, with 2.68 items/m<sup>2</sup> and 0.20 kg/m<sup>2</sup>. ALDFG magnitude was estimated at 4554 tons per annum, based on a FAO surveys and Bootstrap method. Polyethylene identified as the dominant polymer through FTIR analysis, highlighting challenges in waste management. Management strategies for ALDFG include enforcing regulations, promoting sustainable gear designs, implementing Extended Producer Responsibility policies, and enhancing waste reception facilities. Industry inventions to reduce packaging waste by adopting eco-friendly alternatives and zero plastic production are crucial. While clean-up measures are necessary, prevention measures, industry collaboration, and waste disposal facilities remain vital for long term improvements. Pollution indices such as Clean Coast Index reveal a dire situation: 31 % of beaches are dirty and 46 % extremely dirty and 62 % of the study area is categorised as extremely dirty by the Clean Environment Index. The Plastic Abundance Index shows high plastic waste on 39 % of beaches and the Hazardous Litter Index indicates 62 % beaches have widespread hazardous litter. These findings highlight the urgent need for integrated pollution management to restore and protect Tamil Nadu coastal environment.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"213 ","pages":"Article 117700"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428948","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 : 2025-02-18DOI: 10.1016/j.marpolbul.2025.117674
Carlos J. Rodríguez-Sierra , Imar Mansilla-Rivera , Jorge F. Bauzá-Ortega
Contaminants of emerging concern (CECs) have not been extensively studied in Caribbean estuaries, particularly in Puerto Rico. Polar organic chemical integrative samplers were deployed in surface waters at five sampling sites in the San Juan Bay Estuary to investigate the occurrence and distribution of 137 CECs, resulting in the detection of 64 chemicals (51 pharmaceuticals and personal care products “PPCPs”, 12 hormones plus sucralose) at least in one sampling site, and with 35 chemicals obtaining a 100 % detection frequency. Wastewater intrusion was implicated in the presence of CECs based on the detection of sucralose and other wastewater tracers. Condado Lagoon was the most polluted site impacted by untreated wastewater, showing the highest levels of 30 of the 64 detected CECs, and the largest proportion of detected CECs, particularly PPCPs. Levels of estrone and 17β-estradiol represent a high potential risk for adverse effects on aquatic organisms in this Caribbean urban estuary.
{"title":"Passive sampling of contaminants of emerging concern in a Caribbean urban estuary of Puerto Rico","authors":"Carlos J. Rodríguez-Sierra , Imar Mansilla-Rivera , Jorge F. Bauzá-Ortega","doi":"10.1016/j.marpolbul.2025.117674","DOIUrl":"10.1016/j.marpolbul.2025.117674","url":null,"abstract":"<div><div>Contaminants of emerging concern (CECs) have not been extensively studied in Caribbean estuaries, particularly in Puerto Rico. Polar organic chemical integrative samplers were deployed in surface waters at five sampling sites in the San Juan Bay Estuary to investigate the occurrence and distribution of 137 CECs, resulting in the detection of 64 chemicals (51 pharmaceuticals and personal care products “PPCPs”, 12 hormones plus sucralose) at least in one sampling site, and with 35 chemicals obtaining a 100 % detection frequency. Wastewater intrusion was implicated in the presence of CECs based on the detection of sucralose and other wastewater tracers. Condado Lagoon was the most polluted site impacted by untreated wastewater, showing the highest levels of 30 of the 64 detected CECs, and the largest proportion of detected CECs, particularly PPCPs. Levels of estrone and 17β-estradiol represent a high potential risk for adverse effects on aquatic organisms in this Caribbean urban estuary.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"213 ","pages":"Article 117674"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437705","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 : 2025-02-18DOI: 10.1016/j.marpolbul.2025.117668
Arif Jameel , Muhammad Imran , Nawal Abdullah Adam , Sanjar Mirzaliev , Marguba Khidirov , Gao Yingying
This work investigates the environmental damage and economic loss due to oil spills through 2024. This study focusses the relationships between GDP growth and GFF investment with urban growth through ARDL models, cointegration tests, and asymmetric analysis. The data confirms that harms to wildlife, fishing operations, and coastal tourism create long-term economic and natural systems problems. Tourism regions that rely on nature face significant threats to their local environment and financial success. This research proves that we can manage our marine resources sustainably and build effective institutions alongside specific policies to protect tourism interests better. The research unites ecological knowledge and financial impact to give practical guidance for developing tourism regions that protect their environment.
{"title":"Safeguarding tourism economies: Managing the financial and ecological challenges of oil spills on coastal destinations","authors":"Arif Jameel , Muhammad Imran , Nawal Abdullah Adam , Sanjar Mirzaliev , Marguba Khidirov , Gao Yingying","doi":"10.1016/j.marpolbul.2025.117668","DOIUrl":"10.1016/j.marpolbul.2025.117668","url":null,"abstract":"<div><div>This work investigates the environmental damage and economic loss due to oil spills through 2024. This study focusses the relationships between GDP growth and GFF investment with urban growth through ARDL models, cointegration tests, and asymmetric analysis. The data confirms that harms to wildlife, fishing operations, and coastal tourism create long-term economic and natural systems problems. Tourism regions that rely on nature face significant threats to their local environment and financial success. This research proves that we can manage our marine resources sustainably and build effective institutions alongside specific policies to protect tourism interests better. The research unites ecological knowledge and financial impact to give practical guidance for developing tourism regions that protect their environment.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"213 ","pages":"Article 117668"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437699","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 sources, spatiotemporal distribution, contamination levels, and ecological risks of six potentially toxic elements (PTEs) in surface sediments of the Bouregreg Estuary, Morocco, an ecologically significant estuarine system undergoing urbanization and management improvements. The mean PTEs concentrations (mg/kg) were Zn (47.32) > V (30.72) > Pb (17.41) > Cr (14.31) > Cu (9.92) > Cd (1.17). Cd emerged as the most concerning pollutant (up to 2.12 mg/kg), exceeding the background value, showing moderate to strong pollution (Igeo), moderate to very high contamination (CF), and moderate to high ecological risk (ERI). Followed by Pb which showed low to moderate contamination (up to 23.21 mg/kg) according to the CF, correlating with fine, organic-rich sediments near urban areas. Significant seasonal and spatial variations, influenced by anthropogenic pressures and sediment characteristics, were confirmed through principal component analysis and correlation analysis. Historical comparisons indicate an overall improvement in the estuary's ecological health. However, persistent Cd and Pb hotspots emphasize the need for targeted management strategies to safeguard the estuary's ecological integrity and community health.
{"title":"Potentially toxic elements accumulation in the surface sediment of the Bouregreg estuary, Morocco: Implications for environmental changes and human activities over the last decades","authors":"Chaymae Najimi, Siham Bechar, Essediya Cherkaoui, Mohamed Khamar, Abderrahman Nounah","doi":"10.1016/j.marpolbul.2025.117708","DOIUrl":"10.1016/j.marpolbul.2025.117708","url":null,"abstract":"<div><div>This study investigates the sources, spatiotemporal distribution, contamination levels, and ecological risks of six potentially toxic elements (PTEs) in surface sediments of the Bouregreg Estuary, Morocco, an ecologically significant estuarine system undergoing urbanization and management improvements. The mean PTEs concentrations (mg/kg) were Zn (47.32) > V (30.72) > Pb (17.41) > Cr (14.31) > Cu (9.92) > Cd (1.17). Cd emerged as the most concerning pollutant (up to 2.12 mg/kg), exceeding the background value, showing moderate to strong pollution (Igeo), moderate to very high contamination (CF), and moderate to high ecological risk (ERI). Followed by Pb which showed low to moderate contamination (up to 23.21 mg/kg) according to the CF, correlating with fine, organic-rich sediments near urban areas. Significant seasonal and spatial variations, influenced by anthropogenic pressures and sediment characteristics, were confirmed through principal component analysis and correlation analysis. Historical comparisons indicate an overall improvement in the estuary's ecological health. However, persistent Cd and Pb hotspots emphasize the need for targeted management strategies to safeguard the estuary's ecological integrity and community health.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"213 ","pages":"Article 117708"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437701","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 : 2025-02-18DOI: 10.1016/j.marpolbul.2025.117705
Weiwei Zhou , Yushu Yang , Wanhong Han , Chen Song , Zhou Meng , Huajun Zhang , Qingxi Han
Thermal discharge has a notable influence on the composition of macrobenthic communities, yet it remains uncertain whether it also affects macrobenthic biological traits at the community level. Based on the sampling data from 12 stations near the thermal discharge outlet of the Sanmen Nuclear Power Plant between 2022 and 2024, biological trait analysis and RLQ analysis methods were used to reveal the underlying correlation between macrobenthic biological traits and environmental factors. When the species composition changes, it is expected that the traits of composition will also change, and the change in traits of composition is smaller than the change in species composition. In the feature composition, the dominant features of each station are highly consistent. In terms of species composition, the phenomenon of highly consistent species only occurs in the stations near the thermal discharge outlet. Thermal discharge altered the seasonal variations in water temperature, mud temperature, dissolved oxygen, and salinity. The temperatures of seawater and mud are the main drivers of changes in the species and biological trait compositions of macrobenthos. Gastropods and bivalves dominated the area around the thermal discharge outlet, and the abundance of macrobenthos increased significantly with increasing water temperature. The localized warming caused by thermal discharge increased the mud temperature and salinity while decreasing the dissolved oxygen concentration, thereby altering the biological trait composition. At locations with high water temperatures, trait patterns with chitinous layer profiles, small body sizes and short lifespans predominated. The fertilized eggs being protected by the parent and the prolonged stay of the juvenile in the water, which feeds on zooplankton, are the dominant biological trait patterns in terms of reproductive traits. The free crawling and burrowing lifestyle in the shallow sediment layer and the feeding pattern on detritus and animal carcasses were the dominant trait patterns.
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