Marine environmental research最新文献

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Assessment of the Rugulopteryx okamurae invasion in Northeastern Atlantic and Mediterranean bioregions: Colonisation status, propagation hypotheses and temperature tolerance thresholds 东北大西洋和地中海生物区的冈田鹭入侵评估:定植状态、繁殖假设和耐温阈值
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-18 DOI: 10.1016/j.marenvres.2025.107093
Salvador Román , Rubén Vázquez
{"title":"Assessment of the Rugulopteryx okamurae invasion in Northeastern Atlantic and Mediterranean bioregions: Colonisation status, propagation hypotheses and temperature tolerance thresholds","authors":"Salvador Román ,&nbsp;Rubén Vázquez","doi":"10.1016/j.marenvres.2025.107093","DOIUrl":"10.1016/j.marenvres.2025.107093","url":null,"abstract":"<div><div>The recent proliferation of the invasive macroalga <em>Rugulopteryx okamurae</em> in the Mediterranean and Northeastern Atlantic regions poses significant ecological and socioeconomic threats. This study analyses the current state of knowledge on the invasion, assesses the primary dispersal vectors, and evaluates its invasive potential through temperature tolerance. Using Web of Science and Google Scholar databases, publications from 2004 to 2024 were reviewed and categorized into five key areas: physiology, distribution and spread, ecological impacts, socioeconomic consequences, and management strategies. The bibliographic search evidenced a significant increase in studies concerning <em>R. okamurae</em> over the last years (from 1 in 2020 to 38 in 2024). The results also indicated a certain agreement regarding the vector of introduction of this alga into the Strait of Gibraltar in 2015–2016 (ballast waters of merchant ships) but the rapid spread towards Mediterranean and Atlantic areas remains unclear. Nonetheless, aquaculture activities and currents were pointed out as significant dispersal vectors. The temperature analyses highlighted the broad thermal tolerance range of <em>R. okamurae</em>, from 10 °C to 30 °C, which contribute to its extensive colonisation. Therefore, this study underscores the need for urgent management actions to limit the expansion of <em>R. okamurae</em> and mitigate the negative effects observed on coastal ecosystems and economies of colonised areas.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107093"},"PeriodicalIF":3.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679652","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}
引用次数: 0
Development of universal PCR primers for the environmental DNA metabarcoding of cephalopod (Mollusca) diversity 头足类(软体动物)多样性环境DNA元条形码通用PCR引物的开发
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-17 DOI: 10.1016/j.marenvres.2025.107094
Qianqian Wu , Tomoyuki Nakano , So Ishida , Tomoyuki Komai , Yoshihiro Fujiwara , Takao Yoshida , Masaru Kawato , Shin-ichiro Oka , Katsunori Fujikura , Masaki Miya , Toshifumi Minamoto
{"title":"Development of universal PCR primers for the environmental DNA metabarcoding of cephalopod (Mollusca) diversity","authors":"Qianqian Wu ,&nbsp;Tomoyuki Nakano ,&nbsp;So Ishida ,&nbsp;Tomoyuki Komai ,&nbsp;Yoshihiro Fujiwara ,&nbsp;Takao Yoshida ,&nbsp;Masaru Kawato ,&nbsp;Shin-ichiro Oka ,&nbsp;Katsunori Fujikura ,&nbsp;Masaki Miya ,&nbsp;Toshifumi Minamoto","doi":"10.1016/j.marenvres.2025.107094","DOIUrl":"10.1016/j.marenvres.2025.107094","url":null,"abstract":"<div><div>Cephalopods play crucial roles in marine ecosystems, acting as both predators and prey for apex predators, thereby contributing to the distribution of energy and nutrients across the food web. Traditional net capture methods are often ineffective for studying cephalopods owing to their wide distribution in marine environments, necessitating the development of simple and efficient surveying techniques to assess cephalopod diversity. Therefore, in this study, we aimed to establish universal polymerase chain reaction primers specifically targeting mitochondrial 16S rRNA genes for environmental DNA metabarcoding in cephalopods. Two primer sets, Cep16S_D and Cep16S_O, were designed for squids and octopuses, respectively. Taxonomic specificity, resolution, and coverage of these primers were evaluated via <em>in silico</em> and <em>in vitro</em> analyses. Additionally, efficiency of these primer sets was assessed using tissue samples and mock communities. Finally, their applicability and performance were tested at various depths. The developed primers exhibited a relatively large amplification size with mixed bases that enhanced their amplification efficiency and sensitivity for cephalopod detection. We successfully identified cephalopod species with different body sizes, from small species, such as <em>Heteroteuthis dagamensis</em>, to large species, such as <em>Architeuthis dux</em>, at varying water depths. Overall, the primer sets established in this study serve as powerful tools to study cephalopod diversity and exhibit great potential for barcoding and genetic diversity investigations.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"208 ","pages":"Article 107094"},"PeriodicalIF":3.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834227","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}
引用次数: 0
Climate change implications in the suitable habitat of olive ridley turtle Lepidochelys olivacea in the Eastern Tropical Pacific 气候变化对东热带太平洋榄蠵龟适宜生境的影响
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-17 DOI: 10.1016/j.marenvres.2025.107091
Elka García-Rada , Aura Buenfil-Ávila , Christine Figgener , Héctor M. Guzmán , Pamela T. Plotkin , Gabriel Reygondeau , Carlos Robalino-Mejía , Derek P. Tittensor , Héctor Villalobos , César Peñaherrera-Palma
{"title":"Climate change implications in the suitable habitat of olive ridley turtle Lepidochelys olivacea in the Eastern Tropical Pacific","authors":"Elka García-Rada ,&nbsp;Aura Buenfil-Ávila ,&nbsp;Christine Figgener ,&nbsp;Héctor M. Guzmán ,&nbsp;Pamela T. Plotkin ,&nbsp;Gabriel Reygondeau ,&nbsp;Carlos Robalino-Mejía ,&nbsp;Derek P. Tittensor ,&nbsp;Héctor Villalobos ,&nbsp;César Peñaherrera-Palma","doi":"10.1016/j.marenvres.2025.107091","DOIUrl":"10.1016/j.marenvres.2025.107091","url":null,"abstract":"<div><div>The olive ridley turtle <em>Lepidochelys olivacea</em> is one of the most abundant marine turtle species, but its populations are threatened by various environmental changes, including climate change. Understanding how the marine environment influences it is crucial for conservation efforts. This study models the habitat suitability <em>of L</em>. <em>olivacea</em> in the Eastern Tropical Pacific, a region of significant ecological importance for its nesting and foraging activities. We used remote sensing data from 59 individuals tagged in Panama and Costa Rica between 2009 and 2018. The response was modeled with MaxEnt, using a presence-only approach and environmental variables including sea surface temperature, ocean mixed layer thickness, chlorophyll-a concentration, and current velocity. We categorized months into warm (El Niño) and cold (La Niña) conditions, providing insight into climate change effects. Results reveal that chlorophyll-a concentration and sea surface temperature best predicted the presence of <em>L. olivacea</em>. The intertropical convergence zone exhibited high habitat suitability, especially in the Central Pacific. During El Niño, suitable habitat declined, primarily along coastlines, while, during La Niña, it expanded, favoring oceanic waters and temperate temperatures in upwelling zones. These findings suggest climate change could significantly impact <em>L. olivacea</em> distribution, potentially shifting nesting and foraging areas.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107091"},"PeriodicalIF":3.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679665","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}
引用次数: 0
Elucidating divergent growth and climate vulnerability in abalone (Haliotis iris): A multi-year snapshot 阐明鲍鱼(Haliotis iris)的分化生长和气候脆弱性:多年快照
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-16 DOI: 10.1016/j.marenvres.2025.107090
Joanna S. Copedo , Stephen C. Webb , Lizenn Delisle , Ben Knight , Norman L.C. Ragg , Olivier Laroche , Leonie Venter , Andrea C. Alfaro
{"title":"Elucidating divergent growth and climate vulnerability in abalone (Haliotis iris): A multi-year snapshot","authors":"Joanna S. Copedo ,&nbsp;Stephen C. Webb ,&nbsp;Lizenn Delisle ,&nbsp;Ben Knight ,&nbsp;Norman L.C. Ragg ,&nbsp;Olivier Laroche ,&nbsp;Leonie Venter ,&nbsp;Andrea C. Alfaro","doi":"10.1016/j.marenvres.2025.107090","DOIUrl":"10.1016/j.marenvres.2025.107090","url":null,"abstract":"<div><div>Many abalone populations worldwide are in decline as a result of changing climate and fishing pressure. In New Zealand (NZ) <em>Haliotis iris</em> is the largest and most abundant of the endemic abalone species. This species displays high levels of phenotypic variation with slow-growing populations having an impact on their commercial utilisation. The present study incorporates targeted histopathological approaches to characterise tissue-level factors in abalone from NZ's principal fishing region. Adult (n = 60) and sub-adult (n = 56) <em>H. iris</em> were collected from two Chatham Island sites that display differential growth rates; sampling was repeated on six occasions over three years. Through histology the slower-growing adult population was observed to have an elevated ceroid score, higher prevalence of kidney stones and increased prevalence of a plasmodia stage of haplosporidian-like parasites in the right kidney, when compared with the faster-growing and sub-adult populations. Furthermore, the faster-growing adult population appeared to be retaining mature oocytes over the predicted spawning season with higher-than-expected atresia (oocyte degeneration). Factors implicated in growth performance between the two populations include site, environment, parasites, pathology, reproduction, ceroid deposition and previously reported nutritional status. The 18S PCR and metabarcoding on the right kidney tissue were negative for haplosporidian/<em>Urosporidium</em> previously reported in <em>H. iris</em>, with metabarcoding results detecting an apicomplexan ancestral group. The reproductive, somatic and parasite findings from the current study provides critical information on abalone physiological condition which allows facilitation of early detection of conditions that may impact the sustainability and management of <em>H. iris</em> stocks in New Zealand under a changing climate. For instance, changes to reproductive condition may reduce oocyte quality and quantity thereby reducing recruitment to the next generation.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107090"},"PeriodicalIF":3.0,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679651","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}
引用次数: 0
Differentiating macroplastic and mesoplastic pollution on relatively clean beaches of central Philippines 区分菲律宾中部相对清洁海滩上的大塑性和中塑性污染
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-16 DOI: 10.1016/j.marenvres.2025.107092
Dan Robert T. Lumilan , Ruei-Feng Shiu , Hernando P. Bacosa
{"title":"Differentiating macroplastic and mesoplastic pollution on relatively clean beaches of central Philippines","authors":"Dan Robert T. Lumilan ,&nbsp;Ruei-Feng Shiu ,&nbsp;Hernando P. Bacosa","doi":"10.1016/j.marenvres.2025.107092","DOIUrl":"10.1016/j.marenvres.2025.107092","url":null,"abstract":"<div><div>Marine plastic litter exposed to different environmental conditions have the tendency to break and produce smaller plastic debris that threatens marine organism, tourism, livelihood, and health. However, our understanding on the distribution of different sizes of marine plastic litter in marine environments is still limited. This study assessed macroplastic and mesoplastic pollution in eleven residential and five non-residential beaches in Isabel and Merida, Leyte, Philippines. Macroplastics were collected within four quadrats in a delineated 100-m transect line parallel to the shoreline. Sampled litter was then counted, weighed, and sorted into categories. Subsequently, mesoplastic particles were collected from the same quadrats where macroplastic were collected. A total of 562 macroplastic litter and 38 mesoplastics were obtained. Residential sites recorded higher macroplastic and mesoplastic density compared to non-residential sites; however, this is not statistically significant. Dominant macroplastics were <em>sando</em> bags (26.69 %), while mesoplastics are fragmented (50 %), white and green (58 %), and mainly composed of polypropylene (PP) (34 %) as confirmed by FTIR-ATR. The brand audit revealed that Rebisco and PT Mayora Indah TBK were the largest food packaging plastic contributors on the site. Clean-Coast Index classified 75 % of the study sites as clean to moderately clean. Contamination Factors also classified sites having considerable to moderate contamination of mesoplastics. Macroplastic and mesoplastic are not correlated in the area. The result of this study signifies the need to create strategies and strengthen policies to combat plastic pollution. Furthermore, there is a need for industry intervention to produce less packaging and collective effort to achieve plastic net zero.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107092"},"PeriodicalIF":3.0,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679664","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}
引用次数: 0
Neustonic zooplankton communities across distinct summer water masses in the northern East China Sea 东海北部不同夏季水团的浮游动物群落
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-15 DOI: 10.1016/j.marenvres.2025.107088
Jang Han Choi , Geon Kim , Yoonja Kang , Chang-Keun Kang , Taejin Kim , Ho Young Soh
{"title":"Neustonic zooplankton communities across distinct summer water masses in the northern East China Sea","authors":"Jang Han Choi ,&nbsp;Geon Kim ,&nbsp;Yoonja Kang ,&nbsp;Chang-Keun Kang ,&nbsp;Taejin Kim ,&nbsp;Ho Young Soh","doi":"10.1016/j.marenvres.2025.107088","DOIUrl":"10.1016/j.marenvres.2025.107088","url":null,"abstract":"<div><div>Marine neustonic zooplankton are subject to extreme fluctuations in environmental conditions, including water temperature, salinity, and ocean currents. This study examined the community structure of neustonic zooplankton, focusing on copepods, across distinct continental shelf water masses in the northern East China Sea, where coastal and oceanic waters converge. Neustonic zooplankton samples were collected using a neuston net from three regions surrounding Jeju Island, Korea, during June, August, and September 2021. Environmental parameters, such as water temperature, salinity, size-fractioned chlorophyll <em>a</em> concentrations, and suspended particulate matter, were measured. The neustonic copepod community in each region was categorized into two groups based on water masses: Yangtze River Diluted Water (YRDW) versus the remaining shelf water in June; YRDW versus Tsushima Warm Current (TWC) in August; and mixed waters (South Korean Coastal Water, SKCW) versus TWC in September. The spatial distribution of neustonic zooplankton was primarily influenced by distinct water masses. Coastal indicator species (<em>Paracalanus parvus</em> sensu lato (s. l.), <em>Labidocera rotunda</em>, and <em>Ditrichocorycaeus affinis</em>) were significantly correlated with chlorophyll <em>a</em> concentrations in YRDW and SKCW, conversely, water temperature and salinity were closely associated with the abundance of high-salinity indicator species (<em>Canthocalanus pauper</em>, <em>Temora discaudata</em>, <em>Centropages furcatus</em>, and <em>Undinula vulgaris</em>) in the TWC. Additionally, oceanic indicator species correlated with multiple environmental factors across all water masses. These findings suggest that, during summer, the inflow of YRDW influences the spatial conditions in the study area. Moreover, indicator species can serve as valuable markers of water mass fluctuations.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107088"},"PeriodicalIF":3.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644711","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}
引用次数: 0
Effects of vessels on common dolphin activity patterns in a critical area for the species. Conservation implications 船只对海豚活动模式的影响。保护的影响
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-15 DOI: 10.1016/j.marenvres.2025.107081
L. Olaya-Ponzone , R. Espada Ruíz , E. Martín Moreno , D. Patón Domínguez , J.C. García-Gómez
{"title":"Effects of vessels on common dolphin activity patterns in a critical area for the species. Conservation implications","authors":"L. Olaya-Ponzone ,&nbsp;R. Espada Ruíz ,&nbsp;E. Martín Moreno ,&nbsp;D. Patón Domínguez ,&nbsp;J.C. García-Gómez","doi":"10.1016/j.marenvres.2025.107081","DOIUrl":"10.1016/j.marenvres.2025.107081","url":null,"abstract":"<div><div>Although whale-watching tourism makes it easier for humans to learn about these animals in the wild, interactions with boats can trigger temporary or even permanent behavioural changes in their populations. In this work we studied the potential effect of boats on the welfare of common dolphins, <em>Delphinus delphis</em>, a protected species in the Mediterranean, as well as a female bottlenose dolphin (Billie-<em>Tursiops truncatus</em>) that coexists with them in the bay of Algeciras-Gibraltar (BA-G), Southern Spain and that gave birth to the first known hybrid between both species in the wild. First, the reaction of the animals (Approach, Elusive and Indifference) to the presence of boats was observed. Subsequently, we have classified the sightings into four situations: Control (C) and Impact (I) with Regulated (RS) and Unregulated (US) sightings. In each situation, six behavioural states were distinguished: Feeding (F), Resting (R), Milling (M), Socialising (S), Travelling (T) and Diving (D). It was concluded that the presence of boats and non-compliance with the protocol for approaching cetaceans were the main causes of the behavioural transitions and that they led to an absorbing D state in the Markov chains. The results showed that the feeding and resting behaviours of the dolphins were significantly altered. Possible alteration of these behaviours may have negative effects on the animals. Our results are further evidence of the need to regulate and monitor vessel activities to protect common dolphins in BA-G, a critical area for this species, which still lacks specific conservation plans.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107081"},"PeriodicalIF":3.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679650","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}
引用次数: 0
The proximity to marine infrastructure affects fish diversity, the occurrence of non-indigenous species, and the dynamic of the sessile communities 靠近海洋基础设施会影响鱼类多样性、非本地物种的发生和无根群落的动态
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-15 DOI: 10.1016/j.marenvres.2025.107086
Rodrigo M. Tanasovici, Fernando Z. Gibran, Gustavo M. Dias
{"title":"The proximity to marine infrastructure affects fish diversity, the occurrence of non-indigenous species, and the dynamic of the sessile communities","authors":"Rodrigo M. Tanasovici,&nbsp;Fernando Z. Gibran,&nbsp;Gustavo M. Dias","doi":"10.1016/j.marenvres.2025.107086","DOIUrl":"10.1016/j.marenvres.2025.107086","url":null,"abstract":"<div><div>Marine urbanization is changing coastal ecosystems. In this study, we examined how the proximity to recreational marinas influences the structure and recruitment of the sessile community, the diversity of fish, and predation pressure. Sessile communities on marinas supported 68 % more non-indigenous species than those farther from marine infrastructure. Conversely, native species occupied more space in natural habitats, where the diversity of fish was greater. Predation did not influence the diversity or structure of the sessile community, regardless of the habitat type. Nevertheless, predation pressure may be underestimated in artificial habitats due to the lack of connection between platforms and the seafloor. Sessile recruitment tended to be more abundant in artificial habitats. Our findings indicate that even when substrate composition, orientation, and connectivity to the seabed are standardized, proximity to marine infrastructure increases the prevalence of non-indigenous sessile species and diminishes the diversity of potential predatory fish, thereby altering the dynamics of sessile communities.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107086"},"PeriodicalIF":3.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679663","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}
引用次数: 0
Physiological responses of scleractinian coral to trace metal enrichment and thermal stress 硬核珊瑚对微量金属富集和热胁迫的生理响应
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-14 DOI: 10.1016/j.marenvres.2025.107085
Ting-Hsuan Tu , Hung-Yen Hsieh , Pei-Jie Meng , Chung-Chi Chen
{"title":"Physiological responses of scleractinian coral to trace metal enrichment and thermal stress","authors":"Ting-Hsuan Tu ,&nbsp;Hung-Yen Hsieh ,&nbsp;Pei-Jie Meng ,&nbsp;Chung-Chi Chen","doi":"10.1016/j.marenvres.2025.107085","DOIUrl":"10.1016/j.marenvres.2025.107085","url":null,"abstract":"<div><div>Coral bleaching events are increasingly frequent due to global climate change and marine pollution. Trace metals, such as manganese (Mn) and iron (Fe), though toxic at high concentrations, are vital for coral physiology, supporting photosynthesis and antioxidation. This study investigates how thermal stress and trace metal exposure interact to influence the physiology of the scleractinian corals <em>Turbinaria irregularis</em> and <em>Montipora mollis</em>. Corals were exposed to Mn and Fe at varying concentrations under control (25 °C) and elevated (30 °C) temperatures. Mn enhanced photosynthetic efficiency, an increase of 1.7°% in <em>M. mollis</em> at 250 nM and 1.4°% in <em>T. irregularis</em> at 30 °C (<em>p</em> &lt; 0.05). Fe improved photosynthesis by 1.8°% in <em>M. mollis</em> at 50 nM and growth rates by 2.1°% in <em>T. irregularis</em> at 25 °C (<em>p</em> &lt; 0.05). Both metals mitigated bleaching, as seen in reduced relative gray intensity and increased symbiotic algal density, particularly at moderate concentrations. However, elevated temperatures suppressed growth and photosynthetic efficiency, with decreases up to 1.6°% in <em>M. mollis</em> (<em>p</em> &lt; 0.01). These results highlight the pivotal role of trace metals in coral health and stress resilience, while emphasizing the importance of species-specific differences in trace metal uptake, thermal tolerance, and physiological responses. Further studies are necessary to elucidate the mechanisms and long-term impacts of these interactions in the face of ongoing climate change.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107085"},"PeriodicalIF":3.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644710","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}
引用次数: 0
Acute toxicity of antifouling agents CuSO4, ZnPT, and CuPT on marine diatoms Skeletonema costatum and Navicula sp. 防污剂CuSO4、ZnPT和CuPT对海洋硅藻骨藻和Navicula sp.的急性毒性研究
IF 3 3区 环境科学与生态学
Marine environmental research Pub Date : 2025-03-12 DOI: 10.1016/j.marenvres.2025.107084
Taesoo Kim , Huijeong Byeon , Yunji An , Vijay Rayamajhi , Jihyun Lee , Jong Dae Lee , Kwang Soo Lee , Chul-Hyun Kim , Juwon Oh , Jung Han Park , Hyun Woung Shin , Sang Mok Jung
{"title":"Acute toxicity of antifouling agents CuSO4, ZnPT, and CuPT on marine diatoms Skeletonema costatum and Navicula sp.","authors":"Taesoo Kim ,&nbsp;Huijeong Byeon ,&nbsp;Yunji An ,&nbsp;Vijay Rayamajhi ,&nbsp;Jihyun Lee ,&nbsp;Jong Dae Lee ,&nbsp;Kwang Soo Lee ,&nbsp;Chul-Hyun Kim ,&nbsp;Juwon Oh ,&nbsp;Jung Han Park ,&nbsp;Hyun Woung Shin ,&nbsp;Sang Mok Jung","doi":"10.1016/j.marenvres.2025.107084","DOIUrl":"10.1016/j.marenvres.2025.107084","url":null,"abstract":"<div><div>Substrates exposed to the marine environment frequently undergo biofouling, which can result in both pollution and economic losses. Biofouling can be prevented using antifouling paints to inhibit the growth of adherent organisms. Since the ban of tributyltin, most antifouling agents are primarily copper -based mixtures, such as ZnPT and CuPT. To assess the environmental impacts of various antifouling agents, toxicity tests were conducted using the diatoms <em>Skeletonema costatum</em> and <em>Navicula</em> sp. For toxicity assessment, diatoms were exposed to CuSO<sub>4</sub>, ZnPT, and CuPT for 72 h, yielding EC<sub>50</sub> values for <em>S. costatum</em> of 1,524 μg/L, 1.06 μg/L, and 0.46 μg/L, respectively, and for <em>Navicula</em> sp. of 793.8 μg/L, 254.8 μg/L, and 75.93 μg/L, respectively. Both diatoms exhibited sensitivity in the order CuPT &gt; ZnPT &gt; CuSO<sub>4</sub>. Further tests of the combined effects of CuSO<sub>4</sub> and ZnPT revealed that mixing these biocides at their EC10 values produced greater toxicity than their individual effects. Although research concerning the synergistic effects of toxic mixtures is advancing, studies of epiphytic diatoms have been limited. Therefore, further research focused on toxicity and environmental effects among diatoms under various conditions is necessary.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107084"},"PeriodicalIF":3.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143670385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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