Marine environmental research最新文献

{"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}

{"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}

{"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}

{"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}

{"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}

{"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}

{"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 CuSO₄, ZnPT, and CuPT for 72 h, yielding EC₅₀ 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; CuSO₄. Further tests of the combined effects of CuSO₄ 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}

{"title":"Modelling coral calcification rates in Orbicella faveolata (Cnidaria: Scleractinia) using light attenuation coefficients in water (KdPAR)","authors":"Gabriela Gutiérrez-Estrada ,&nbsp;J.J. Adolfo Tortolero-Langarica ,&nbsp;Juan P. Carricart-Ganivet","doi":"10.1016/j.marenvres.2025.107074","DOIUrl":"10.1016/j.marenvres.2025.107074","url":null,"abstract":"<div><div>Coral calcification represents a vital process within coral reef ecosystems, wherein reef-building corals contribute significantly to the physical construction and maintenance of the reef framework. The calcification process is related to the photosynthesis of endosymbiotic algae, where light plays a crucial role in coral energetic tradeoffs. However, local stressors have led to increased turbidity, subsequently affecting light availability, especially in nearshore reefs. This study proposes a light-driven model designed to predict coral calcification in <em>Orbicella faveolata</em> under different light conditions, using the diffuse attenuation coefficient in water (K_dPAR) as a predictive parameter. To determine annual calcification across different light conditions, we collected coral skeleton samples across depth gradients (∼5–38 m) at five reef sites in the Mexican Caribbean. Sclerochronological characteristics were analyzed through X-ray imaging and K_dPAR values were obtained using in-situ light measurements. The results indicate that as light PAR is attenuated with depth, coral skeletal density increases and extension rate decreases. Likewise, annual calcification also responds to the underwater light field. However, calcification shows a pattern that can be explained by a nonlinear Gaussian function and shows that 60 % of surface PAR is needed for optimal calcification. This function was used to predict annual calcification in different suboptimal K_dPAR conditions. This report presents the first model of annual calcification of <em>O. faveolata</em> using K_dPAR. The results provide significant ecological insights into coral calcification and underscore the importance of conserving optimal optical properties of the water column to sustain coral growth and provides a better understanding of coral distribution and their contribution to reef framework development across vertical gradients in the Caribbean region.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107074"},"PeriodicalIF":3.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636840","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}

{"title":"Spatial characteristics of microbial communities and their functions in sediments of subtropical Beibu Gulf, China","authors":"Wenxue Che ,&nbsp;Hui Zhao ,&nbsp;Ying Man ,&nbsp;Xiao Tan","doi":"10.1016/j.marenvres.2025.107077","DOIUrl":"10.1016/j.marenvres.2025.107077","url":null,"abstract":"<div><div>Understanding the intricate relationship between marine geography and microbial functions is crucial for marine conservation and management. In this study, we conducted a comprehensive analysis of bacterial composition and function in nearshore and offshore sediments of the Beibu Gulf using 16S rRNA high-throughput sequencing. The results showed that <em>Proteobacteria</em> (average relative abundance: 27.07 %) and <em>Desulfobacterota</em> (average relative abundance: 12.28 %) were the most dominant phyla across all stations, while <em>Woeseiaceae</em> (3.26 %–8.31 %) and <em>Anaerolineaceae</em> (0.61 %–7.43 %) could serve as potential indicator species for pollution. In our study area, the <em>α</em>-diversity of bacterial communities in sediment samples showed an initial increase from coastal to offshore regions, followed by a decrease with further distance from the coastlines. The composition of sediment bacterial communities was mainly influenced by total phosphorus (R² = 0.183, <em>p</em> &lt; 0.01) and salinity (R² = 0.550, <em>p</em> &lt; 0.01). Furthermore, the sulfur (S) cycling genes of KEGG pathways displayed significant variations with the distance from shore, implying that S oxidation dominated in nearshore sediments, while S reduction occurred mainly in offshore sediments, which was attributed to the differences in redox conditions across diverse marine environments. These findings will not only enhance our current understanding of the intricate relationship between marine geography and microbial functions but also contribute to elucidating the biogeochemical characteristics of the Beibu Gulf. This research will provide valuable information and a solid scientific basis for the conservation and management of various marine areas.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107077"},"PeriodicalIF":3.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629438","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}

{"title":"Dissipation of Ulva prolifera green tides across various spatial and temporal scales and the short-term effects on marine environments","authors":"Jiacheng Sun ,&nbsp;Ke Liu ,&nbsp;Haibo Zhang ,&nbsp;Jie Fu ,&nbsp;Xiaoyong Shi ,&nbsp;Ziwei Yao ,&nbsp;Gang Zhao ,&nbsp;Zhenxia Sha ,&nbsp;Hao Cui ,&nbsp;Jinpeng Wu","doi":"10.1016/j.marenvres.2025.107082","DOIUrl":"10.1016/j.marenvres.2025.107082","url":null,"abstract":"<div><div>The floating <em>Ulva prolifera</em> green tides have been observed annually in the South Yellow Sea (SYS) since 2007, and most researches indicate that <em>Ulva prolifera</em> typically appears near the Jiangsu Shoal in May, then floats and spreads northward, and eventually millions of tons of <em>Ulva prolifera</em> (4539600 t in 2021) accumulates and disappeared offshore of the Shandong Peninsula. The decomposition of <em>Ulva prolifera</em> in this region releases substantial amounts of nutrients and organic matter, which significantly affect the coastal ecosystem. To study the extinction of green tides on the environment, this study examines environmental parameters across three characteristic areas and analyzed the impact of <em>Ulva prolifera</em> death on the coastal seawater of Qingdao city from 2017 to 2022. The findings indicated that while green tides outbreaks do not significantly affect the annual nitrogen and phosphorus budgets of the entire SYS, while have notable impacts in regions where <em>Ulva prolifera</em> decays. The nutrients released during <em>Ulva prolifera</em> decay promote phytoplankton growth, increased the mean chlorophyll-a concentration from 1.45 μg/L to 2.85 μg/L during May to August in the Qingdao coastal area. Nutrient concentrations in the Qingdao coastal waters increased after the decay of <em>Ulva prolifera</em> and its’ associated phytoplankton. Dissolved inorganic nitrogen and phosphate concentration increased from 3.89 to 6.44 μmol/L and 0.17–0.20 μmol/L during August to October in the Qingdao coastal waters, respectively. This finding indicates that <em>Ulva prolifera</em> decay could cause short-term effects on the marine environment especially in nutrient pools.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107082"},"PeriodicalIF":3.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629439","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}