Regional Studies in Marine Science最新文献

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Differences in the impact of intense ENSO+ in Bahia Magdalena (SW of Baja California, Mexico) in the context of climate change 气候变化背景下强烈厄尔尼诺/南方涛动+对巴伊亚马格达莱纳(墨西哥下加利福尼亚西南部)影响的差异
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-11 DOI: 10.1016/j.rsma.2024.103864
María del Carmen Jiménez-Quiroz , Francisco Javier Barrón-Barraza , Rafael Cervantes-Duarte , René Funes-Rodríguez , Rogelio González-Armas
{"title":"Differences in the impact of intense ENSO+ in Bahia Magdalena (SW of Baja California, Mexico) in the context of climate change","authors":"María del Carmen Jiménez-Quiroz ,&nbsp;Francisco Javier Barrón-Barraza ,&nbsp;Rafael Cervantes-Duarte ,&nbsp;René Funes-Rodríguez ,&nbsp;Rogelio González-Armas","doi":"10.1016/j.rsma.2024.103864","DOIUrl":"10.1016/j.rsma.2024.103864","url":null,"abstract":"<div><div>The Bahia Magdalena-Bahia Almejas (BM-BA) complex is the largest coastal lagoon system in the Mexican Pacific; it is in a transitional zone between temperate and tropical regions. BM-BA has a high biodiversity and is an important source of fishing resources; however, its productivity diminishes during ENSO+ events. This work aimed to compare the impact of the three most intense ENSOs (1982–1983, 1997–1998, and 2015–2016) on their environmental and biological characteristics in the context of global warming. Since 1970, this region has been warming, and the chlorophyll-<em>a</em> is diminishing; however, short-term environmental variations associated with basin-scale processes have modified these trends. The comparison showed that the equatorial influence on the 1997–1998 ENSO was more evident, while the North Pacific conditions and other large-scale environmental processes influenced the other ENSOs: in 1982–1983, the warm signal continued after the ENSO+ ended, and in 2015–2016, it was present before the ENSO+ onset due to the MWH The Blob and probably global warming. High temperatures at the basin scale altered large-scale wind patterns, weakening local upwelling and diminishing the nutrient input. The Equatorial and North Pacific influence on BM varies over time (as expected in a transition zone like BM); however, in recent years, North Pacific warming associated with climate change has probably gained relevance and modulated the effect of ENSO+.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528577","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
Biodiversity associated with a coralligenous build-up off Sicily (Ionian Sea) 与西西里岛(爱奥尼亚海)附近珊瑚堆积有关的生物多样性
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-11 DOI: 10.1016/j.rsma.2024.103868
Gemma Donato , Rossana Sanfilippo , Daniela Basso , Pietro Bazzicalupo , Marco Bertolino , Valentina Alice Bracchi , Mara Cipriani , Francesco D’Alpa , Adriano Guido , Mauro Pietro Negri , Francesco Sciuto , Donatella Serio , Antonietta Rosso
{"title":"Biodiversity associated with a coralligenous build-up off Sicily (Ionian Sea)","authors":"Gemma Donato ,&nbsp;Rossana Sanfilippo ,&nbsp;Daniela Basso ,&nbsp;Pietro Bazzicalupo ,&nbsp;Marco Bertolino ,&nbsp;Valentina Alice Bracchi ,&nbsp;Mara Cipriani ,&nbsp;Francesco D’Alpa ,&nbsp;Adriano Guido ,&nbsp;Mauro Pietro Negri ,&nbsp;Francesco Sciuto ,&nbsp;Donatella Serio ,&nbsp;Antonietta Rosso","doi":"10.1016/j.rsma.2024.103868","DOIUrl":"10.1016/j.rsma.2024.103868","url":null,"abstract":"<div><div>Coralligenous is one of the most important habitats of the Mediterranean Sea hosting a very high biodiversity that, however, has not been fully investigated yet. The paper addressed the study of the biodiversity of a coralligenous bioconstruction collected at a depth of 36.7 m off Marzamemi (SE Sicily, Ionian Sea). The species diversity, composition and structure of the main associated taxonomic groups were investigated in order to identify possible differences between the communities of the hard framework (mainly built by calcified corallinales) and the canopy cover. The examined build-up showed significant species diversity for almost all groups. Bryozoans were the most diversified group and, together with foraminifers, also the most abundant both on the canopy and the frame. Further groups showed high species diversity (except for serpulids) and total abundance (except for molluscs) on the canopy rather than on the frame. Due to their different nature and microenvironmental parameters, the canopy and the frame hosted different communities. Besides juvenile specimens, the canopy mostly hosted unmineralized and weakly mineralized, small-sized, short-lived species well adapted to living on ephemeral and flexible substrates. On the contrary, the rigid and persistent frame mostly hosted highly mineralized, large, long-lived species, which usually contributed to the building and strengthening of the bioconstruction. Unlike mapping and monitoring, a thorough description of coralligenous biodiversity requires accurate naked eye and microscopical analysis assisted by SEM investigation due to the small size and cryptic behaviour of several species.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528031","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
How environmental data enables intelligent navigation: Factors assessment of affecting the navigation in the Northeast Arctic Route 环境数据如何实现智能导航:影响北极东北航道航行的因素评估
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-10 DOI: 10.1016/j.rsma.2024.103861
Jihong Chen , Xitao Zhang , Lang Xu , Shanshan Fu
{"title":"How environmental data enables intelligent navigation: Factors assessment of affecting the navigation in the Northeast Arctic Route","authors":"Jihong Chen ,&nbsp;Xitao Zhang ,&nbsp;Lang Xu ,&nbsp;Shanshan Fu","doi":"10.1016/j.rsma.2024.103861","DOIUrl":"10.1016/j.rsma.2024.103861","url":null,"abstract":"<div><div>Due to the more favorable navigational environment and higher safety along Northeast Arctic Route, this route is being used more and more frequently for international shipping. In this research, the factor analysis method is applied to assess the navigational environment of each sea area in the Northeast Arctic Route, revealing the effects of Arctic navigation influence factor on the navigational environment, and analyzing the change trend of the navigational environment of different sea areas in different seasons. Further, the effects of multiple factors on the number of voyages are discussed through multiple stepwise regression model, including the navigational environment score, geopolitical risk, export &amp; import trade and the probability of pollution accidents, then the Interrupted time series analysis (ITSA) method combined with seasonal decomposition is explored the effect of emergencies on the number of voyages on the Northeast Arctic Route. The number of voyages on the Northeast Arctic Route has been altered to varying degrees by the occurrence of various emergencies. Further, the Yamal LNG project and the Russian-Ukrainian conflict have a significant effect on the number of voyages, while the Covid-19 epidemic has a lesser effect on the number of voyages.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432502","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
Unveiling hidden threats: Assessing the risks of potentially toxic elements (PTEs) in contaminated fish of the Anzali Wetland 揭示隐藏的威胁:评估安扎利湿地受污染鱼类中潜在有毒元素 (PTE) 的风险
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-10 DOI: 10.1016/j.rsma.2024.103853
Fatemeh Salehi , Saeed Sharafi , Ali Kazemi , Milad Esmaeilbeigi
{"title":"Unveiling hidden threats: Assessing the risks of potentially toxic elements (PTEs) in contaminated fish of the Anzali Wetland","authors":"Fatemeh Salehi ,&nbsp;Saeed Sharafi ,&nbsp;Ali Kazemi ,&nbsp;Milad Esmaeilbeigi","doi":"10.1016/j.rsma.2024.103853","DOIUrl":"10.1016/j.rsma.2024.103853","url":null,"abstract":"<div><div>The environmental degradation caused by potentially toxic elements (PTEs) and its consequential health risks to humans and the environment have raised profound concerns. To explore the potential hazards associated with PTEs, we analyzed the total concentration of As, Cd, Cr, Hg, and Pb in the muscle, gills, viscera, and eggs of four fish species <em>Esox lucius</em> Linnaeus, 1758 (Pike), <em>Cyprinus carpio</em> Linnaeus, 1758 (Carp), <em>Vimba vimba</em> Linnaeus, 1758 (Vimba), and <em>Tinca tinca</em> Linnaeus, 1758 (Tinca) collected from the Anzali Wetland. We measured the concentrations of trace metals in the fish samples and calculated the associated human health risks and compared the results with the international standards. Our findings showed the PTEs concentrations in fish samples with Cr &gt; Hg &gt; Pb &gt; Cd &gt;As. We observed Cr, Hg, and Pb concentrations (3.4 ± 1.61, 2.57 ± 1.24, and 1.7 ± 0.48 μg g<sup>−1</sup> wet weight (w.w.), respectively) in muscle samples, Cd concentration (1.05 ± 0.53 μg g<sup>−1</sup> w.w.) in eggs, and As concentration (0.40 ± 0.13 μg g<sup>−1</sup> w.w.) in viscera of Pike. Consequently, Pike exhibited the highest concentrations of these metals across all its sampled tissues. Comparing the results to the standard set by the World Health Organization (WHO) declared that the average heavy metal concentrations exceeded the permissible limits for certain elements. Results also indicated that the concentrations of As and Pb in all fish species posed potential health risks, particularly to children, with a target hazard quotient THQ&gt; 1. Moreover, the presence of As and Pb metals in all human age groups, as well as Cr and Hg metals, indicated a potential risk of cancer for children (Cr &gt; 1E-4). Therefore, the metal pollution status of the Anzali Wetland not only influences the biodiversity of fish but potentially poses health-related issues to the target consumers.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441255","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
Assessing ecological risks and microplastic pollution in a tropical coastal ecosystem: Effects of rainfall variability in Southeast India 评估热带沿海生态系统的生态风险和微塑料污染:印度东南部降雨量变化的影响
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-10 DOI: 10.1016/j.rsma.2024.103858
Partheeban Emmanuel Charles, Rajendran Rajaram
{"title":"Assessing ecological risks and microplastic pollution in a tropical coastal ecosystem: Effects of rainfall variability in Southeast India","authors":"Partheeban Emmanuel Charles,&nbsp;Rajendran Rajaram","doi":"10.1016/j.rsma.2024.103858","DOIUrl":"10.1016/j.rsma.2024.103858","url":null,"abstract":"<div><div>Microplastic pollution poses a significant threat to coastal ecosystems, prompting an in-depth investigation into its seasonal fluctuations and ecological impacts. This study examines microplastics in Cuddalore’s coastal waters and sediments across four seasons. Results show varying microplastic concentrations, peaking during the monsoon and pre-monsoon seasons, likely influenced by rainfall variability. Fibers dominate in both water (69–100 %) and sediment samples (66–92 %), with polyethylene and polyethylene terephthalate as the predominant polymer types in water. Sediments exhibit a more diverse polymer distribution, with polypropylene and polyethylene terephthalate being prevalent. Elevated polymer hazard index and potential ecological risk index raise concerns, reaching values of 108930 and 1125, respectively. This underscores the urgency of implementing effective management strategies to safeguard tropical coastal ecosystems from microplastic pollution. This study highlights the complex interplay between seasonal dynamics, rainfall variability, polymer types, and pollution levels, emphasizing the need for proactive environmental management measures.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432501","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
Heavy metals toxicity in edible bivalves and risk exposure to humans through its consumption from Adyar Estuary, Tamilnadu, India – A baseline study 印度泰米尔纳德邦阿迪亚尔河口可食用双壳贝中的重金属毒性以及人类通过食用双壳贝接触重金属的风险 - 一项基线研究
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-10 DOI: 10.1016/j.rsma.2024.103854
Tamil Selvan Chandrasekaran , John Milton , Bharathi Santhanabharathi , Kumara Perumal Pradhoshini , Louis Cojandaraj , Marckasagayam Priyadharshini , Munawar Suhail Ahmed , Mohamed Saiyad Musthafa , Paulraj Balaji , Caterina Faggio
{"title":"Heavy metals toxicity in edible bivalves and risk exposure to humans through its consumption from Adyar Estuary, Tamilnadu, India – A baseline study","authors":"Tamil Selvan Chandrasekaran ,&nbsp;John Milton ,&nbsp;Bharathi Santhanabharathi ,&nbsp;Kumara Perumal Pradhoshini ,&nbsp;Louis Cojandaraj ,&nbsp;Marckasagayam Priyadharshini ,&nbsp;Munawar Suhail Ahmed ,&nbsp;Mohamed Saiyad Musthafa ,&nbsp;Paulraj Balaji ,&nbsp;Caterina Faggio","doi":"10.1016/j.rsma.2024.103854","DOIUrl":"10.1016/j.rsma.2024.103854","url":null,"abstract":"<div><div>The Adyar estuary, situated at the heart of Chennai city, India, has been subjected to significant anthropogenic pollution over the past decade due to rapid urbanization and industrialization.</div><div>This study endeavored to explore the bioaccumulation patterns of heavy metals within bivalve species including <em>Perna viridis, Mercenaria mercenaria</em>, and <em>Lamellidens marginalis</em>. Additionally, it aimed to assess the concentrations of heavy metals present in water samples obtained from ten discrete stations within the Adyar estuary across different seasonal periods. To better understand the dynamics of contamination, metal pollutants including Cd, B, Cu, Fe, Mn, Pb, and Zn were analyzed in the soft tissues (Gill, Kidney, and Muscle) of the bivalves using Atomic Absorption Spectrophotometer (AAS) (ELICO's SL- 176). The study also investigated the seasonal changes in biochemical constituents affecting the nutritional quality of these edible bivalves following conventional methods, and estimated the risk (both carcinogenic and non-carcinogenic) to consumers. Results showed that the biochemical constituents of <em>Perna viridis</em> and <em>Mercenaria mercenaria</em> were comparatively lower than those of the freshwater bivalve <em>Lamellidens Marginalis</em> (p &gt; 0.05). Heavy metal accumulation in the mussels followed the order Mn &gt; Zn &gt; Cu &gt; Pb &gt; Fe &gt; Cd &gt; B. The highest uptake of metals by the bivalves occurred during the post-monsoon season, while the least uptake was observed during the monsoon season. The overall metal burden for the studied species followed the descending order <em>M. mercenaria</em> &gt; <em>P. viridis</em> &gt; <em>L. marginalis</em>. The study indicated that both carcinogenic and non-carcinogenic risks to humans from consuming these mussels were higher due to the excessive accumulation of metals Zn and Mn in all three studied bivalves.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540061","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
Onboard test-based exhaust emission factors for marine diesel engines on anchor handling tug supply vessels 基于船上测试的船用柴油发动机废气排放系数,适用于锚处理拖船补给船
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-09 DOI: 10.1016/j.rsma.2024.103866
Yaoqi Kang , Bo Wang , Shuqiang Liu , Mingliang Chen , Zixiao Ye , Zibin Yin
{"title":"Onboard test-based exhaust emission factors for marine diesel engines on anchor handling tug supply vessels","authors":"Yaoqi Kang ,&nbsp;Bo Wang ,&nbsp;Shuqiang Liu ,&nbsp;Mingliang Chen ,&nbsp;Zixiao Ye ,&nbsp;Zibin Yin","doi":"10.1016/j.rsma.2024.103866","DOIUrl":"10.1016/j.rsma.2024.103866","url":null,"abstract":"<div><div>In order to accurately assess China’s port air pollution caused by AHTS (Anchor Handling Tug Supply Vessels) ships, 46 diesel engines on 27 AHTS ships were tested for onboard emissions using a large gas analyzer to statistically analyze their fuel-based and power-based emission factors. The results show that fuel-based NOx-emission factors for MEs, SEs and AEs before and after the use of the SCR system are 45.4, 38.24,33.04 g/kg and 6.35, 4.98, 5.82 g/kg, CO-emission factors are 7.95, 6.30, 7.96 g/kg and 6.90, 6.93, 8.32 g/kg, THC-emission factors are 0.49, 0.64, 0.25 g/kg and 0.42, 0.47, 0.22 g/kg, and CO<sub>2</sub>-emission factors are 3121.62, 3121.34, 3093.12 g/kg and 3088.14,3091.40, 3085.21 g/kg, respectively. Power-based NOx-emission factors for MEs, SEs and AEs before and after the use of the SCR system are 9.71, 8.61, 7.58 g/(kW·h) and 1.37, 1.23, 1.33 g/(kW·h), CO-emission factors are 1.71, 2.08, 1.84 g/(kW·h) and 1.47, 1.53, 1.93 g/(kW·h), THC-emission factors are 0.10, 0.14, 0.05 g/(kW·h) and 0.09, 0.13, 0.06 g/(kW·h), and CO<sub>2</sub>-emission factors are 671.73, 700.58, 718.46 g/(kW·h) and 664.42, 694.16, 716.92 g/(kW·h), respectively. The power-based emission factor is closely related to the diesel engine load, and the relationship between different exhaust emissions and diesel engine load shows different patterns. In addition, it was found that the NOx emissions of the ship decreased significantly to meet the IMO Tier III requirements after running SCR. The emission factors of CO, HC and CO<sub>2</sub> have no obvious change whether SCR systems were operated or not. The AHTS marine engine emission factors obtained in this paper are highly relevant and can provide reliable data for establishing a suitable emission inventory for medium and high speed engineering support vessels.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432499","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
Biological traits and functional diversity of free-living nematode assemblages along a water-depth gradient in the northwestern of Gulf of Mexico 墨西哥湾西北部沿水深梯度的自由生活线虫群落的生物特征和功能多样性
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-08 DOI: 10.1016/j.rsma.2024.103860
Abel Abraham Vargas-Espositos, Alberto de Jesús-Navarrete, Wilbert Andrés Pérez-Pech, Abril Anguas-Escalante
{"title":"Biological traits and functional diversity of free-living nematode assemblages along a water-depth gradient in the northwestern of Gulf of Mexico","authors":"Abel Abraham Vargas-Espositos,&nbsp;Alberto de Jesús-Navarrete,&nbsp;Wilbert Andrés Pérez-Pech,&nbsp;Abril Anguas-Escalante","doi":"10.1016/j.rsma.2024.103860","DOIUrl":"10.1016/j.rsma.2024.103860","url":null,"abstract":"<div><div>This study analyzed the biological traits (BTs) and functional diversity (FD) of free-living nematodes in the northwestern of Gulf of Mexico. We collected sediment samples at 27 sites at a depth gradient from 44 to 3466 m. The nematodes were identified at species level and classified in five groups of BTs: feeding type, amphid shape, tail shape, body shape, and body length. We determined the FD based on the combination of BTs through a functional dendrogram, using the total length of the branch as a measure of functional diversity. Salinity, pH, and dissolved oxygen were measured in each site, as well as the sediment composition and percentage of organic carbon (OC). A total of 1673 nematodes were identified, belonging to 35 families, 96 genera, and 153 species. The number of species varied along water depth (1–60 species). The more abundant BTs were the non-selective deposit feeders (49 %), amphid spiral shape (55 %), clavate conical cylindrical tail (52 %), sizes 1000–1500 μm (51 %), and body shape slender (97 %). The most common combination of traits was non-selective deposit feeders, spiral amphid, clavate conical cylindrical tail, slender shape, and sizes &lt; 1500 μm. The changes of BTs with increasing depth were more evident in the feeding types and amphid shape. The FD fluctuated between sites (0.42–0.99) and was significantly correlated with the number of species, suggesting that taxonomic and functional diversity have similar responses to environmental variables. The FD was significantly influenced only by the percentage of sands. Our data provide valuable information that can be used in subsequent studies and benthos monitoring.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428206","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
Spatial inhomogeneity analyses of extreme sea levels along Lianyungang coast based on numerical simulation and Monte Carlo model 基于数值模拟和蒙特卡洛模型的连云港沿海极端海平面空间不均匀性分析
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-06 DOI: 10.1016/j.rsma.2024.103856
Baiwen Liu, Sudong Xu, Kai Yin
{"title":"Spatial inhomogeneity analyses of extreme sea levels along Lianyungang coast based on numerical simulation and Monte Carlo model","authors":"Baiwen Liu,&nbsp;Sudong Xu,&nbsp;Kai Yin","doi":"10.1016/j.rsma.2024.103856","DOIUrl":"10.1016/j.rsma.2024.103856","url":null,"abstract":"<div><div>The prediction of extreme sea levels in coastal areas has been a prominent requirement of coastal engineering design and planning. The research was based on the frequent disasters caused by typhoon storm surges in China and the demand for reasonable improvement of port structures in coastal areas. Delft3D hydrodynamic model and the Monte Carlo model were integrated to predict the spatial distribution of extreme sea levels along the coast of Lianyungang city in Jiangsu province. The Monte Carlo model was adopted to generate stochastic typhoon characteristic sequences as meteorological driving forces. In the hydrodynamic model, meteorological factors were coupled with the astronomical tide to simulate storm surge scenarios. Extreme sea levels were estimated by ranking maximum levels of simulated storm surge events. This programming was feasible compared to the prediction results of frequency analysis methods. The research showed that the predicted 1 in 100-year extreme sea level of Lianyungang station was 3.75 m, while the predicted 1 in 200-year value was 3.85 m. The programming was adopted to predict extreme sea levels of several stations and analyze the spatial distribution characteristics of extreme sea levels in four port areas of Lianyungang Port. Results revealed that extreme sea levels in modeling areas had significant spatial inhomogeneity, which might be related to the concavity of coastlines, islands, and terrains. Estimating spatial extreme sea levels could better cognize the influence of inundation disasters in coastal areas and be conducive to the design of port structures and the safety of port operations.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428602","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
Can automatic measuring replace humans when evaluating a shrimp fishery? 在评估捕虾渔业时,自动测量能否取代人工?
IF 2.1 4区 环境科学与生态学
Regional Studies in Marine Science Pub Date : 2024-10-05 DOI: 10.1016/j.rsma.2024.103852
Bent Herrmann , Elling Ruud Øye , Jonatan Sjølund Dyrstad , Anja Helene Alvestad
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