Regional Studies in Marine Science最新文献_第7页

Potential drivers for chlorophyll-a variability in the southwestern Caribbean of Colombia

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-02-01 DOI: 10.1016/j.rsma.2025.104032

Pacheco Wilberto , Lennin Florez-Leiva , Correa Marco , Raúl Montoya-Sánchez , Constanza Ricaurte-Villota

Satellite observations of chlorophyll-a have been evaluated in the northern part of Caribbean Colombia but with little information in the southern part. We used twenty years of merged multi-satellite chlorophyll and wind information with fourteen years of sea surface temperature, (SST) and ten years of ocean currents. Missing Chl-a and SST data were estimated using the Data Interpolating Empirical Orthogonal Function (DINEOF) method. Results showed four regions with different seasonal patterns of Chl-a variability along the coast and there are other forcings that modulate the distribution of chlorophyll-a in the coastal areas of the southern part of the Caribbean Colombia (i.e SST, CDOM and Fluorescence Line Height). Also, the Gulf of Urabá (GU) region showed highest Chl-a concentrations along the annual cycle (1–7.5 mg m⁻³) with maximum values during the dry season (December-April); the Gulf of Morrosquillo (GM) region has the lowest Chl-a concentration with a seasonal maximum in the rainy season (May-November; ∼ 0.75 mg m⁻³); the Cartagena de Indias (CT) region with Chl-a concentrations > 0.75 mg m⁻³ along year and three seasonal maxima (January-February, June and September- December); and the Magdalena River mouth (MR) region were the Chl-a ranged between 0.5 and 1.5 mg m⁻³ showing similar annual maxima as in the CT zone, although the location of the high Chl-a areas were determined by changes in the orientation of the MR plume. This could suggest the occurrence of upwelling to the South of the MR during the dry and windy season, which could explain the seasonal maximum of Chl-a observed between January- February in MR and CT zones while rainy season in the GM, CT, and MR zones were synchronic with the annual maximum flow of Magdalena and Sinú rivers, suggesting that a nutrient supply by these rivers could support the high Chl-a concentrations observed.

{"title":"Potential drivers for chlorophyll-a variability in the southwestern Caribbean of Colombia","authors":"Pacheco Wilberto , Lennin Florez-Leiva , Correa Marco , Raúl Montoya-Sánchez , Constanza Ricaurte-Villota","doi":"10.1016/j.rsma.2025.104032","DOIUrl":"10.1016/j.rsma.2025.104032","url":null,"abstract":"<div><div>Satellite observations of chlorophyll-a have been evaluated in the northern part of Caribbean Colombia but with little information in the southern part. We used twenty years of merged multi-satellite chlorophyll and wind information with fourteen years of sea surface temperature, (SST) and ten years of ocean currents. Missing Chl-a and SST data were estimated using the Data Interpolating Empirical Orthogonal Function (DINEOF) method. Results showed four regions with different seasonal patterns of Chl-a variability along the coast and there are other forcings that modulate the distribution of chlorophyll-a in the coastal areas of the southern part of the Caribbean Colombia (i.e SST, CDOM and Fluorescence Line Height). Also, the Gulf of Urabá (GU) region showed highest Chl-a concentrations along the annual cycle (1–7.5 mg m<sup>−3</sup>) with maximum values during the dry season (December-April); the Gulf of Morrosquillo (GM) region has the lowest Chl-a concentration with a seasonal maximum in the rainy season (May-November; ∼ 0.75 mg m<sup>−3</sup>); the Cartagena de Indias (CT) region with Chl-a concentrations > 0.75 mg m<sup>−3</sup> along year and three seasonal maxima (January-February, June and September- December); and the Magdalena River mouth (MR) region were the Chl-a ranged between 0.5 and 1.5 mg m<sup>−3</sup> showing similar annual maxima as in the CT zone, although the location of the high Chl-a areas were determined by changes in the orientation of the MR plume. This could suggest the occurrence of upwelling to the South of the MR during the dry and windy season, which could explain the seasonal maximum of Chl-a observed between January- February in MR and CT zones while rainy season in the GM, CT, and MR zones were synchronic with the annual maximum flow of Magdalena and Sinú rivers, suggesting that a nutrient supply by these rivers could support the high Chl-a concentrations observed.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"82 ","pages":"Article 104032"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Mats of green filamentous alga Cladophora in the hypersaline Bay Sivash: Distribution, structure, environment-forming role and resource potential

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-02-01 DOI: 10.1016/j.rsma.2025.104031

Alexander Prazukin, Nickolai Shadrin, Alexander Latushkin, Elena Anufriieva

Marine coastal shallow lagoons are widespread worldwide; macroalgae and seagrasses often play a key role in their ecosystem functioning. The world's largest hypersaline lagoon Bay Sivash (the Sea of Azov) plays a vital role in maintaining the landscape connectivity and sustainability of the region. The green macroalga Cladophora sivashensis occupies hundreds of km⁻² in the lagoon, forming the bottom and floating mats with wet biomass over 20 kg m⁻². Data was obtained during expeditions to the lagoon. Sampling of mats was carried out at 15 stations on July 16–17, 2020, one site of these on May 27–29, 2022 (every four hours during the day), and June 21, 2022 (every four hours during three days). Measurements of environmental parameters (water temperature, photosynthetically active radiation, oxygen content, wind speed and direction, turbidity, etc.) were also done. Mats distribution is directly related to the direction and speed of the wind. Cladophora mats influenced the daily dynamics and the vertical distribution of most studied water parameters. In Bay Sivash, the average dry biomass of Cladophora mats was 2.25 kg (dry weight) m⁻², and its total biomass in the lagoon can reach from 524 to 1573 thousand tons of dry weight. Obtained data allowed an assessment of the total biomass of Cladophora in the entire bay and quantify the influence of mats on the abiotic water parameters in the lagoon for the first time. The high Cladophora total biomass and productivity, a variety of valuable compounds in its biomass indicate that it can be considered as a potential resource in the lagoon for large-scale use in medicine, agriculture, and industry. may suggest such perspective areas as long-term monitoring of Cladophora development in lagoon and mats interactions with other species.

{"title":"Mats of green filamentous alga Cladophora in the hypersaline Bay Sivash: Distribution, structure, environment-forming role and resource potential","authors":"Alexander Prazukin, Nickolai Shadrin, Alexander Latushkin, Elena Anufriieva","doi":"10.1016/j.rsma.2025.104031","DOIUrl":"10.1016/j.rsma.2025.104031","url":null,"abstract":"<div><div>Marine coastal shallow lagoons are widespread worldwide; macroalgae and seagrasses often play a key role in their ecosystem functioning. The world's largest hypersaline lagoon Bay Sivash (the Sea of Azov) plays a vital role in maintaining the landscape connectivity and sustainability of the region. The green macroalga <em>Cladophora sivashensis</em> occupies hundreds of km<sup>−2</sup> in the lagoon, forming the bottom and floating mats with wet biomass over 20 kg m<sup>−2</sup>. Data was obtained during expeditions to the lagoon. Sampling of mats was carried out at 15 stations on July 16–17, 2020, one site of these on May 27–29, 2022 (every four hours during the day), and June 21, 2022 (every four hours during three days). Measurements of environmental parameters (water temperature, photosynthetically active radiation, oxygen content, wind speed and direction, turbidity, etc.) were also done. Mats distribution is directly related to the direction and speed of the wind. <em>Cladophora</em> mats influenced the daily dynamics and the vertical distribution of most studied water parameters. In Bay Sivash, the average dry biomass of <em>Cladophora</em> mats was 2.25 kg (dry weight) m<sup>−2</sup>, and its total biomass in the lagoon can reach from 524 to 1573 thousand tons of dry weight. Obtained data allowed an assessment of the total biomass of <em>Cladophora</em> in the entire bay and quantify the influence of mats on the abiotic water parameters in the lagoon for the first time. The high <em>Cladophora</em> total biomass and productivity, a variety of valuable compounds in its biomass indicate that it can be considered as a potential resource in the lagoon for large-scale use in medicine, agriculture, and industry. may suggest such perspective areas as long-term monitoring of <em>Cladophora</em> development in lagoon and mats interactions with other species.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"82 ","pages":"Article 104031"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Microplastics in commercially sold fish in a coastal city of the Philippine Islands, Western Pacific

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-02-01 DOI: 10.1016/j.rsma.2025.104025

Kenney D. Benaires , Leni G. Yap-Dejeto , Richard B. Parilla

This study assessed the presence of microplastics in fish gut samples from Tacloban City's wet markets using microscopy and Fourier Transform Infrared (FTIR) spectroscopy. Consumption of fish contaminated with microplastics poses health risks, including oxidative stress, inflammation, and other cytotoxic effects. The research aimed to determine the prevalence of microplastics in fish commonly sold for consumption in a highly urbanized coastal city like Tacloban. A total of 25 individuals from each of the top five most-purchased fish species across three major wet markets were collected and analyzed. The results showed that 12 ± 6.5 individuals of Rastrelliger faughni, 9 ± 2 individuals of Chanos chanos, 8 ± 1.53 individuals of Sardinella spp., 8 ± 1.53 individuals of Decapterus spp., and 7 ± 1.53 individuals of Rastrelliger brachysoma had microplastics in their guts. Among these, Rastrelliger faughni exhibited the highest average number of microplastic particles (10.67 ± 2.9), while Rastrelliger brachysoma had the lowest (2.33 ± 0.46). FTIR analysis identified the polymers as cellulose propionate, high-density polyethylene (HDPE), ethylene-propylene diene monomer (EPDM), and polyacetal. Elongated microplastics were the most prevalent shape, with orange being the dominant color.

{"title":"Microplastics in commercially sold fish in a coastal city of the Philippine Islands, Western Pacific","authors":"Kenney D. Benaires , Leni G. Yap-Dejeto , Richard B. Parilla","doi":"10.1016/j.rsma.2025.104025","DOIUrl":"10.1016/j.rsma.2025.104025","url":null,"abstract":"<div><div>This study assessed the presence of microplastics in fish gut samples from Tacloban City's wet markets using microscopy and Fourier Transform Infrared (FTIR) spectroscopy. Consumption of fish contaminated with microplastics poses health risks, including oxidative stress, inflammation, and other cytotoxic effects. The research aimed to determine the prevalence of microplastics in fish commonly sold for consumption in a highly urbanized coastal city like Tacloban. A total of 25 individuals from each of the top five most-purchased fish species across three major wet markets were collected and analyzed. The results showed that 12 ± 6.5 individuals of <em>Rastrelliger faughni</em>, 9 ± 2 individuals of <em>Chanos chanos</em>, 8 ± 1.53 individuals of <em>Sardinella</em> spp., 8 ± 1.53 individuals of <em>Decapterus</em> spp., and 7 ± 1.53 individuals of <em>Rastrelliger brachysoma</em> had microplastics in their guts. Among these, <em>Rastrelliger faughni</em> exhibited the highest average number of microplastic particles (10.67 ± 2.9), while <em>Rastrelliger brachysoma</em> had the lowest (2.33 ± 0.46). FTIR analysis identified the polymers as cellulose propionate, high-density polyethylene (HDPE), ethylene-propylene diene monomer (EPDM), and polyacetal. Elongated microplastics were the most prevalent shape, with orange being the dominant color.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"82 ","pages":"Article 104025"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Exploratory factors in community-based adaptation strategies for managing marine microplastics

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-02-01 DOI: 10.1016/j.rsma.2025.104015

Nova Ulhasanah , Mega Mutiara Sari , Ariyanti Sarwono , Khairiraihanna Johari , Sapta Suhardono , Ditha Verenia Sanda , Netriyunita Netriyunita , Chun-Hung Lee , I Wayan Koko Suryawan

The growing issue of marine microplastics poses significant environmental challenges, necessitating effective control strategies informed by community engagement. Conducted in Jakarta, Indonesia, this research employs exploratory factor analysis, cluster analysis, and logistic regression to identify key factors influencing public willingness to engage in microplastic control initiatives. The study identifies five main determinants: asset integration, responsive flexibility, coordinated systems, empowerment through knowledge, and stakeholder activation. Notably, asset integration (p = 0.004), responsive flexibility (p = 0.01), and coordinated systems (p < 0.001) significantly enhance public participation, suggesting that practical and adaptable infrastructure is crucial for increasing community engagement. However, empowerment through knowledge, while positively trending, does not show statistical significance (p = 0.422), indicating that awareness alone may not be sufficient to motivate community action. Stakeholder activation is identified as a particularly critical factor (p < 0.001), substantially boosting participation levels. Cluster analysis further divides participants into two groups: 'Proactive Participants' (n = 328), demonstrating high engagement, and 'Skeptical Observers' (n = 117), showing lesser willingness. Additionally, the study reveals that age significantly impacts engagement, with younger individuals (20–29 years) demonstrating significantly lower willingness (p = 0.002). These findings highlight the necessity for targeted policies and community-driven actions to effectively mitigate marine microplastic pollution. They underscore the need for integrated strategies that combine rigorous scientific research with robust community involvement to develop sustainable solutions for controlling marine microplastics.

{"title":"Exploratory factors in community-based adaptation strategies for managing marine microplastics","authors":"Nova Ulhasanah , Mega Mutiara Sari , Ariyanti Sarwono , Khairiraihanna Johari , Sapta Suhardono , Ditha Verenia Sanda , Netriyunita Netriyunita , Chun-Hung Lee , I Wayan Koko Suryawan","doi":"10.1016/j.rsma.2025.104015","DOIUrl":"10.1016/j.rsma.2025.104015","url":null,"abstract":"<div><div>The growing issue of marine microplastics poses significant environmental challenges, necessitating effective control strategies informed by community engagement. Conducted in Jakarta, Indonesia, this research employs exploratory factor analysis, cluster analysis, and logistic regression to identify key factors influencing public willingness to engage in microplastic control initiatives. The study identifies five main determinants: asset integration, responsive flexibility, coordinated systems, empowerment through knowledge, and stakeholder activation. Notably, asset integration (p = 0.004), responsive flexibility (p = 0.01), and coordinated systems (p < 0.001) significantly enhance public participation, suggesting that practical and adaptable infrastructure is crucial for increasing community engagement. However, empowerment through knowledge, while positively trending, does not show statistical significance (p = 0.422), indicating that awareness alone may not be sufficient to motivate community action. Stakeholder activation is identified as a particularly critical factor (p < 0.001), substantially boosting participation levels. Cluster analysis further divides participants into two groups: 'Proactive Participants' (n = 328), demonstrating high engagement, and 'Skeptical Observers' (n = 117), showing lesser willingness. Additionally, the study reveals that age significantly impacts engagement, with younger individuals (20–29 years) demonstrating significantly lower willingness (p = 0.002). These findings highlight the necessity for targeted policies and community-driven actions to effectively mitigate marine microplastic pollution. They underscore the need for integrated strategies that combine rigorous scientific research with robust community involvement to develop sustainable solutions for controlling marine microplastics.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"82 ","pages":"Article 104015"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

First report on morphometrics, length-weight relationship and relative condition factor of Solenocera hextii Wood-Mason & Alcock, 1891 from Indian waters

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-02-01 DOI: 10.1016/j.rsma.2025.104022

B. Sureandiran , N.K. Suyani , T.H. Dave , K. Karuppasamy

The morphometric measurements, length-length relationships (LLRs), length-weight relationships (LWRs), and relative condition factor (K_n) of deep-sea mud shrimp, Solenocera hextii were estimated for the first time from the Veraval fishing harbour, Gujarat. The morphometric characters showed a significant (p < 0.01) difference between sexes. The highest coefficient of variation was observed in carapace width for both males (11.58 %) and females (13.34 %). The LLRs showed highest growth rate in carapace length followed by abdomen length and carapace width. The sex ratio showed no significant (p > 0.05) difference between males and females. The average total length of female (6.58 cm) shrimp was higher than male (5.85 cm) shrimp. The ANCOVA reveals significant differences in the total length-weight and carapace length-weight relationships between males and females. The females exhibited higher b values in the relationships (W = 0.0138 TL^2.7909; W = 0.2526 CL^2.2377) compared to the males (W = 0.0429 TL^2.1267; W = 0.3565 CL^1.8829). The b value of all relationships indicates negative allometric growth (b<3) for both males and females. No significant difference was observed in the average K_n value between the sexes.

{"title":"First report on morphometrics, length-weight relationship and relative condition factor of Solenocera hextii Wood-Mason & Alcock, 1891 from Indian waters","authors":"B. Sureandiran , N.K. Suyani , T.H. Dave , K. Karuppasamy","doi":"10.1016/j.rsma.2025.104022","DOIUrl":"10.1016/j.rsma.2025.104022","url":null,"abstract":"<div><div>The morphometric measurements, length-length relationships (LLRs), length-weight relationships (LWRs), and relative condition factor (<em>K</em><sub><em>n</em></sub>) of deep-sea mud shrimp, <em>Solenocera hextii</em> were estimated for the first time from the Veraval fishing harbour, Gujarat. The morphometric characters showed a significant (<em>p</em> < 0.01) difference between sexes. The highest coefficient of variation was observed in carapace width for both males (11.58 %) and females (13.34 %). The LLRs showed highest growth rate in carapace length followed by abdomen length and carapace width. The sex ratio showed no significant (<em>p</em> > 0.05) difference between males and females. The average total length of female (6.58 cm) shrimp was higher than male (5.85 cm) shrimp. The ANCOVA reveals significant differences in the total length-weight and carapace length-weight relationships between males and females. The females exhibited higher <em>b</em> values in the relationships (W = 0.0138 TL<sup>2.7909</sup>; W = 0.2526 CL<sup>2.2377</sup>) compared to the males (W = 0.0429 TL<sup>2.1267</sup>; W = 0.3565 CL<sup>1.8829</sup>). The <em>b</em> value of all relationships indicates negative allometric growth (<em>b</em><3) for both males and females. No significant difference was observed in the average <em>K</em><sub><em>n</em></sub> value between the sexes.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"82 ","pages":"Article 104022"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Bioaccumulation of metals in aquatic species from anthropogenically stressed and ecologically sensitive zones of Maharashtra's coastal belt, India

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-02-01 DOI: 10.1016/j.rsma.2025.104019

Saurabh Lonkar, Satish Kolte

Edible aquatic species are an essential component of the human diet and contain nutrients that are required for normal metabolism and the growth of the human body. However, aquatic species, due to their surrounding environment, can also lead to the bioaccumulation of non-essential elements that may pose a serious threat to human health upon consumption. Therefore, the present study is an attempt to understand the variation in bioaccumulation of essential metals (Mn, Co, Cu, Zn, Cr, Se, and Sr) and non-essential metals (As, Pb, Cd, Sb, and Sn) within 19 locally consumed fish in two different regions of the western coast of Maharashtra, India. The assessment of aquatic species showed significantly higher bioavailability of non-essential metals in the North-west region (NW- Mumbai), which is anthropogenically stressed due to industrial effluents, domestic discharges, dredging activities, and land runoffs. On the contrary, lower accumulations of non-essential metals were observed in the South-west region (SW- Malvan), having insignificant sources of anthropogenic activities. The metal pollution index (MPI) was higher by 40 % in the NW region than the SW region of Maharashtra. The health risk assessment indicated the mean estimated daily intake (EDI) for As and Pb found in Mumbai samples were 42 % and 25 % higher than tolerable daily intake (TDI), respectively, whereas for the Malvan region, both metals were in the acceptable TDI. The EDI for Cd, however, was higher by 251 % and 61 % than the TDI levels in Mumbai and Malvan, respectively. The target carcinogenic risk (TCR) for As in Mumbai and Malvan was 4.57 × 10⁻⁰³ and 1.70 × 10⁻⁰³, while for Cr it was 2.95 × 10⁻⁰³ and 1.33 × 10⁻⁰³, respectively. This was above the TCR guideline of 10⁻⁰⁴ (indicating cancer risk over a human life as 1 in 10,000). In crux, the health risk assessment indices disclosed that As, Cd, Pb, and Cr in the analysed fish species might have toxicological effects upon chronic uptake and can impair community health.

{"title":"Bioaccumulation of metals in aquatic species from anthropogenically stressed and ecologically sensitive zones of Maharashtra's coastal belt, India","authors":"Saurabh Lonkar, Satish Kolte","doi":"10.1016/j.rsma.2025.104019","DOIUrl":"10.1016/j.rsma.2025.104019","url":null,"abstract":"<div><div>Edible aquatic species are an essential component of the human diet and contain nutrients that are required for normal metabolism and the growth of the human body. However, aquatic species, due to their surrounding environment, can also lead to the bioaccumulation of non-essential elements that may pose a serious threat to human health upon consumption. Therefore, the present study is an attempt to understand the variation in bioaccumulation of essential metals (Mn, Co, Cu, Zn, Cr, Se, and Sr) and non-essential metals (As, Pb, Cd, Sb, and Sn) within 19 locally consumed fish in two different regions of the western coast of Maharashtra, India. The assessment of aquatic species showed significantly higher bioavailability of non-essential metals in the North-west region (NW- Mumbai), which is anthropogenically stressed due to industrial effluents, domestic discharges, dredging activities, and land runoffs. On the contrary, lower accumulations of non-essential metals were observed in the South-west region (SW- Malvan), having insignificant sources of anthropogenic activities. The metal pollution index (MPI) was higher by 40 % in the NW region than the SW region of Maharashtra. The health risk assessment indicated the mean estimated daily intake (EDI) for As and Pb found in Mumbai samples were 42 % and 25 % higher than tolerable daily intake (TDI), respectively, whereas for the Malvan region, both metals were in the acceptable TDI. The EDI for Cd, however, was higher by 251 % and 61 % than the TDI levels in Mumbai and Malvan, respectively. The target carcinogenic risk (TCR) for As in Mumbai and Malvan was 4.57 × 10<sup>−03</sup> and 1.70 × 10<sup>−03</sup>, while for Cr it was 2.95 × 10<sup>−03</sup> and 1.33 × 10<sup>−03</sup>, respectively. This was above the TCR guideline of 10<sup>−04</sup> (indicating cancer risk over a human life as 1 in 10,000). In crux, the health risk assessment indices disclosed that As, Cd, Pb, and Cr in the analysed fish species might have toxicological effects upon chronic uptake and can impair community health.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"82 ","pages":"Article 104019"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Habitat use and movements of Japanese spiny lobster (Panulirus japonicus) in a proposed offshore wind farm area: Implications for the coexistence of offshore wind energy development and coastal fisheries

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-02-01 DOI: 10.1016/j.rsma.2025.104037

Ikusei Sasaki , Yuki Matsumoto , Munenari Takeda , Yoshiki Matsushita , Itsumi Nakamura , Ryo Kawabe

As Japan accelerates offshore wind farm (OWF) development to achieve carbon neutrality by 2050, it is crucial to understand the impacts of OWFs on local fisheries. To provide baseline data for the assessing these impacts on fisheries, we tracked the movements of Japanese spiny lobsters (Panulirus japonicus), a commercially important species, using acoustic telemetry in an area that was designated by the government as a promotion zone for OWF development. Acoustic tags were attached to 23 adult lobsters (CL = 97.9 ± 17.7 mm), which were then released in an isolated rocky reef frequently used by local fishermen as a lobster fishing ground. The tagged lobsters were detected within the reef for 7–97 (mean ± SD = 52 ± 29) days, with five individuals remaining within the reef > 90 days. The duration of home-area occupancy during which lobsters likely occupied the same or adjacent shelters within the reef ranged 2–42 (mean ± SD = 5.7 ± 5.8) days. Movement network analyses revealed that lobsters often relocated shelters both within and between habitat patches, with some traveling over 1-km per night to reach another patch. These findings suggest that if OWF structures function as new habitats for this species, the structures' introduction could alter the lobsters' spatial distribution and movement network. We believe that a comparative approach examining the space use of commercial species before and after OWF development is essential for determining the precise impacts of OWF introduction on local fisheries.

{"title":"Habitat use and movements of Japanese spiny lobster (Panulirus japonicus) in a proposed offshore wind farm area: Implications for the coexistence of offshore wind energy development and coastal fisheries","authors":"Ikusei Sasaki , Yuki Matsumoto , Munenari Takeda , Yoshiki Matsushita , Itsumi Nakamura , Ryo Kawabe","doi":"10.1016/j.rsma.2025.104037","DOIUrl":"10.1016/j.rsma.2025.104037","url":null,"abstract":"<div><div>As Japan accelerates offshore wind farm (OWF) development to achieve carbon neutrality by 2050, it is crucial to understand the impacts of OWFs on local fisheries. To provide baseline data for the assessing these impacts on fisheries, we tracked the movements of Japanese spiny lobsters (<em>Panulirus japonicus</em>), a commercially important species, using acoustic telemetry in an area that was designated by the government as a promotion zone for OWF development. Acoustic tags were attached to 23 adult lobsters (CL = 97.9 ± 17.7 mm), which were then released in an isolated rocky reef frequently used by local fishermen as a lobster fishing ground. The tagged lobsters were detected within the reef for 7–97 (mean ± SD = 52 ± 29) days, with five individuals remaining within the reef > 90 days. The duration of home-area occupancy during which lobsters likely occupied the same or adjacent shelters within the reef ranged 2–42 (mean ± SD = 5.7 ± 5.8) days. Movement network analyses revealed that lobsters often relocated shelters both within and between habitat patches, with some traveling over 1-km per night to reach another patch. These findings suggest that if OWF structures function as new habitats for this species, the structures' introduction could alter the lobsters' spatial distribution and movement network. We believe that a comparative approach examining the space use of commercial species before and after OWF development is essential for determining the precise impacts of OWF introduction on local fisheries.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"82 ","pages":"Article 104037"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Sustainability considerations for end-of-life fibre-reinforced plastic boats

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-01-31 DOI: 10.1016/j.rsma.2025.104054

Ruadan Geraghty , Jasper Graham-Jones , Richard Pemberton , John Summerscales , Simon Bray

In the 1950s, glass fibre-reinforced polyester resin (GRP, also known as fibreglass or glassfibre) composites replaced wood and metal as the material for small recreational and work boats. The changes resulted from relative ease of manufacture, durability, and low maintenance. New fibres and resins then became available to create a wider range of Fibre-Reinforced Plastics (FRP). Vessels remain serviceable beyond design life: 10 years for inflatables, 20 years for motorboats and 30 years plus for sailboats. Many vessels have now reached end-of-life (EoL) and become Abandoned or Derelict Vessels (ADV). Given that thermosetting resin is not easy to recycle, these boats exist as slowly rotting hulks. There is a growing cohort of stakeholders from various backgrounds becoming concerned about this issue. This review defines sustainability as the balance of Technical, Economic, Environmental Social and Governance (TEESG) and discusses the TEESG considerations for this waste stream.

引用次数: 0

Modeling the spatial distribution of the tití shrimp (Xyphopenaeus riveti) under climate change scenarios for end of the century in the Colombian Pacific

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-01-31 DOI: 10.1016/j.rsma.2025.104059

Yumer Alexis Florez Caicedo , Iván Felipe Benavides , Ángela I. Guzmán Alvis

The tití shrimp (Xyphopanaeus riveti) is a species of great economic importance for artisanal fishermen in the Colombian Pacific. However, the uncertainty about how climate change may affect its distribution hinders decision-making for its management and sustainable use. Therefore, the objective of this research was to evaluate the current and future spatial distribution of X. riveti in the Colombian Pacific under four climate change scenarios. Species distribution models were built with the Random Forests (RF) algorithm and projected to the climate scenarios SSP 2.6, 4.5, 7.0, and 8.5 for the decades 2080 and 2090. Occurrence data from 2008 to 2019 and nine environmental variables representing its habitat were employed. Seventy-five percent of the data was used to build the model, and 25 % for validation. Layers of seafloor variables for each climate change scenario were generated using the bathymetric projection (BP) method. Results indicate that the most important variables for predicting the distribution of this shrimp were iron, silicate, chlorophyll-a, and bottom hardness. The present distribution is more likely to occur in shallow waters near the coastline. However, for 2080 and 2090, the potential distribution shifts towards deeper waters and away from the coast. This technical information is useful for decision-making in the sustainable management of this important fisheries resource.

{"title":"Modeling the spatial distribution of the tití shrimp (Xyphopenaeus riveti) under climate change scenarios for end of the century in the Colombian Pacific","authors":"Yumer Alexis Florez Caicedo , Iván Felipe Benavides , Ángela I. Guzmán Alvis","doi":"10.1016/j.rsma.2025.104059","DOIUrl":"10.1016/j.rsma.2025.104059","url":null,"abstract":"<div><div>The tití shrimp (<em>Xyphopanaeus riveti)</em> is a species of great economic importance for artisanal fishermen in the Colombian Pacific. However, the uncertainty about how climate change may affect its distribution hinders decision-making for its management and sustainable use. Therefore, the objective of this research was to evaluate the current and future spatial distribution of <em>X. riveti</em> in the Colombian Pacific under four climate change scenarios. Species distribution models were built with the Random Forests (RF) algorithm and projected to the climate scenarios SSP 2.6, 4.5, 7.0, and 8.5 for the decades 2080 and 2090. Occurrence data from 2008 to 2019 and nine environmental variables representing its habitat were employed. Seventy-five percent of the data was used to build the model, and 25 % for validation. Layers of seafloor variables for each climate change scenario were generated using the bathymetric projection (BP) method. Results indicate that the most important variables for predicting the distribution of this shrimp were iron, silicate, chlorophyll-a, and bottom hardness. The present distribution is more likely to occur in shallow waters near the coastline. However, for 2080 and 2090, the potential distribution shifts towards deeper waters and away from the coast. This technical information is useful for decision-making in the sustainable management of this important fisheries resource.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"83 ","pages":"Article 104059"},"PeriodicalIF":2.1,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Urban Beach Evolution in Saint Louis, Senegal (West Africa) using Shore-Based Camera Video Monitoring as a Management Tool

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2025-01-30 DOI: 10.1016/j.rsma.2025.104050

Amadou Diouf , Cheikh Omar Tidjani Cissé , Rafael Almar , Baba Sy , Boubou Aldiouma Sy , Adelaide Taveneau , Issa Sakho , Bamol Ali Sow , Grégoire Abessolo Ondoa , Abdoulaye Ndour , Kader Ba , Erwin W.J. Bergsma , Ibrahima Camara

This study investigates the effectiveness of shore-based camera video monitoring for tracking nearshore waves and morphological evolution of an urban sandy beach, Saint Louis, Senegal (West Africa) within the framework of an engineering protection project. The research aims to support coastal monitoring initiatives for erosion management by employing various methods to estimate parameters such as wave characteristics, shoreline position, and bathymetry using video cameras. Beyond the typical seasonal variations induced by the oceanic regime, video observations well capture wave variations, and show significant morphological responses, including the gradual migration of the inner sandbar from intermediate depths towards the upper beach over several months during the summer of 2021. These findings underscore the need for a deeper understanding of the mechanisms governing these exchanges, and highlight the importance of improving observations of the morphological land-sea continuum through video technology and potentially satellite tools at scarce documented sites such as encountered in developing countries. Such advances are critical to the development of more effective, data-driven coastal management strategies.

{"title":"Urban Beach Evolution in Saint Louis, Senegal (West Africa) using Shore-Based Camera Video Monitoring as a Management Tool","authors":"Amadou Diouf , Cheikh Omar Tidjani Cissé , Rafael Almar , Baba Sy , Boubou Aldiouma Sy , Adelaide Taveneau , Issa Sakho , Bamol Ali Sow , Grégoire Abessolo Ondoa , Abdoulaye Ndour , Kader Ba , Erwin W.J. Bergsma , Ibrahima Camara","doi":"10.1016/j.rsma.2025.104050","DOIUrl":"10.1016/j.rsma.2025.104050","url":null,"abstract":"<div><div>This study investigates the effectiveness of shore-based camera video monitoring for tracking nearshore waves and morphological evolution of an urban sandy beach, Saint Louis, Senegal (West Africa) within the framework of an engineering protection project. The research aims to support coastal monitoring initiatives for erosion management by employing various methods to estimate parameters such as wave characteristics, shoreline position, and bathymetry using video cameras. Beyond the typical seasonal variations induced by the oceanic regime, video observations well capture wave variations, and show significant morphological responses, including the gradual migration of the inner sandbar from intermediate depths towards the upper beach over several months during the summer of 2021. These findings underscore the need for a deeper understanding of the mechanisms governing these exchanges, and highlight the importance of improving observations of the morphological land-sea continuum through video technology and potentially satellite tools at scarce documented sites such as encountered in developing countries. Such advances are critical to the development of more effective, data-driven coastal management strategies.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"83 ","pages":"Article 104050"},"PeriodicalIF":2.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0