Marine environmental research最新文献

{"title":"Deciphering seawater acidification in the Muping Marine Ranch in summer: pH vs. aragonite saturation state","authors":"Honghao Wang ,&nbsp;Zhe Zhang ,&nbsp;Haizhen Bian ,&nbsp;Hongwei Ren ,&nbsp;Liang Xue ,&nbsp;Yubin Hu","doi":"10.1016/j.marenvres.2025.107196","DOIUrl":"10.1016/j.marenvres.2025.107196","url":null,"abstract":"<div><div>Coastal seasonal acidification has severely impacted marine aquaculture, particularly shellfish farming. However, factors controlling seawater acidification vary in different aquaculture conditions. This study conducted summer cruises of a typical shellfish farming in China, from June to July 2022 to analyze the spatiotemporal distributions of seawater pH and aragonite saturation state (Ω_arag), and their response to temperature, sea-air CO₂ exchange, mixing, CaCO₃ formation/dissolution, and biological effects. The pH and Ω_arag of bottom seawater were both lower than surface seawater, with the pH of surface and bottom seawater ranging from 8.02 to 8.09 and 7.87 to 8.02, while the Ω_arag ranging from 2.80 to 3.80 and 2.21 to 2.43, respectively. The bottom seawater pH and Ω_arag both show a decreasing trend, with Ω_arag at certain stations close to or below 2. Biological (surface seawater: 51 % ± 4 %; bottom seawater: −39 % ± 8 %) and temperature (surface seawater: −28 % ± 6 %; bottom seawater: −41 % ± 8 %) effects were crucial on regulation of seawater pH. Biological effects were the dominant factor in the variation of Ω_arag in both the surface (64 % ± 7 %) and bottom (−48 % ± 9 %) seawater. Additionally, the dissolution of calcium carbonate in bottom seawater contributed to an increase in Ω_arag to some extent (15 % ± 27 %). Ω_arag better reflects the influence of non-temperature processes (e.g., CaCO₃ formation/dissolution and biological effects). This study advocates for Ω_arag as a more suitable indicator of seawater acidification in coastal aquaculture areas.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107196"},"PeriodicalIF":3.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896099","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":"How global container shipping emissions and marine primary production are related to: A geographically and temporally weighted analysis","authors":"Hongchu Yu ,&nbsp;Yifan Lu ,&nbsp;Zhixiang Fang ,&nbsp;Lei Xu","doi":"10.1016/j.marenvres.2025.107195","DOIUrl":"10.1016/j.marenvres.2025.107195","url":null,"abstract":"<div><div>Ocean sustainability is a critical global issue. However, increasing CO₂ emissions from container shipping have adversely impacted marine ecosystems. Oceanic net primary production (NPP) is a key indicator of marine ecosystem health. Despite abundant research showing a relationship between CO₂ and NPP, limited attention has been given to the relationship between CO₂ emissions from ships and NPP. This study estimates global CO₂ emissions from container shipping from 2018 to 2021 using the Ship Traffic Emission Assessment Model (STEAM), then combines remote sensing NPP data and applies a geographically and temporally weighted regression (GTWR) model to explore their spatiotemporal relationship. The results reveal the temporal variation patterns, hotspot regions, and clustering characteristics of CO₂ emissions from container shipping and NPP. Furthermore, the findings indicate that NPP's response to CO₂ emissions shows varying correlations. In western South America, southwestern Africa, the equatorial Atlantic, and the southern Greenland Sea, CO₂ emissions from container shipping promote NPP, while in the Indian Ocean, Black Sea, Mediterranean Sea, and North Atlantic, CO₂ emissions inhibit NPP. That implies differing environmental sensitivities and the variations in balance between the positive effects of increased dissolved inorganic carbon (DIC) and the negative effects of ocean acidification. This study clarifies the spatiotemporal heterogeneous relationship between CO₂ emissions from container shipping and NPP, providing strong support for the development of sustainable oceans.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107195"},"PeriodicalIF":3.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886986","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":"Spatial distribution and risk assessment of heavy metal in coastal waters of China","authors":"Qiwen Zheng ,&nbsp;Dong Sun ,&nbsp;Erbang Zheng ,&nbsp;Hui Zhao ,&nbsp;Meina Duan","doi":"10.1016/j.marenvres.2025.107193","DOIUrl":"10.1016/j.marenvres.2025.107193","url":null,"abstract":"<div><div>In order to better understand the status of heavy metal pollution in surface seawater of China's coastal waters, this paper compiled research results on seven heavy metals (i.e. Hg, As, Cu, Cd, Cr, Pb, Zn) in surface seawater of 35 coastal areas of China's four major sea areas (i.e. Bohai Sea, Yellow Sea, East China Sea, and South China Sea) during 2011–2018, and evaluated the levels of heavy metal pollution and their potential ecological risk by using the methods of classical comprehensive pollution index (CPI) and potential ecological risk coefficient (PERC). The heavy metal pollution levels in the surface seawater were further compared across the different coastal areas. To enhance these evaluations, machine learning approaches, including support vector machines (SVM) and convolutional neural networks (CNN), were also employed to analyze and predict the complex nonlinear relationships between heavy metal concentrations and factors associated with human activities. The results showed that the highest concentrations(μg/L) of Hg, As, and Cd are found in the coastal waters of northern Liaodong Bay; the highest concentrations of Cu, Pb, and Cr are observed in the coastal waters of Tianjin, while the highest concentration of Zn is found in Huanghua Port. Most studied areas were classified as Class I or Class II. The maximum values among the individual pollution indexes were more frequently observed in the Yellow Sea. The areas with higher comprehensive pollution indices were generally due to higher individual heavy metal indices. Potential ecological risk in the coastal areas was mainly influenced by Hg, Cd, Pb, and Cu. Moderate or higher ecological risk was presented in 7 sea areas. The sea areas where the average values of CPI of heavy metals from high to low were Yellow Sea &gt; South China Sea &gt; East China Sea &gt; Bohai Sea, and the average values of comprehensive potential risk factor are South China Sea &gt; Yellow Sea &gt; East China Sea &gt; Bohai Sea. The SVM model exhibited effective performance on analyzing the individual pollution index of heavy metals, while the CNN model was effectively used in analyzing the PERC. The study suggested that machine learning is helpful to assess and predict the status of heavy metal pollution.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107193"},"PeriodicalIF":3.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903670","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":"Investigating adult reproduction as a potential barrier to recovery of wild Manila clam (Venerupis philippinarum) populations impacted by the Nathan E. Stewart oil spill, Central Coast, B.C.","authors":"Tyler A. Black ,&nbsp;Benjamin de Jourdan ,&nbsp;Kyle A. Artelle ,&nbsp;Diana Chan ,&nbsp;Ryan S. Prosser","doi":"10.1016/j.marenvres.2025.107181","DOIUrl":"10.1016/j.marenvres.2025.107181","url":null,"abstract":"<div><div>Understanding the chronic effects of environmental disasters, such as oil spills, is critical to assessing long-term impacts on marine ecosystems and guiding recovery efforts. We assessed the reproductive potential of adult Manila clams (<em>Venerupis philippinarum</em>) from sites impacted by the <em>Nathan E. Stewart</em> oil spill (Central Coast, British Columbia, Haíɫzaqv Territory, October 2016) to determine if reduced reproductive capacity may be driving a delayed population recovery among the impacted clam populations. Clams from both reference and impacted sites were conditioned under controlled laboratory settings, with reproductive metrics (gonadosomatic index, progression of gamete development, fertilization success, spawning success) showing no significant differences between sites, suggesting that reproductive output in adults is not currently limiting recovery. Adult clams from all sites successfully spawned under controlled laboratory conditions. However, despite successful spawning and fertilization, larval survival was uniformly low across sites; this low survival may be attributable to methodological factors, such as temperature or handling stress rather than direct impacts of the oil spill. Findings suggest factors other than adult reproductive capacity are causing continued delay of population recovery, warranting further investigation.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107181"},"PeriodicalIF":3.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896100","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 effect of temperature on the photosynthetic carbon fixation efficiency of sessile macroalgae in the mussel farming area of Gouqi Island through stable isotope","authors":"Yifei Shen ,&nbsp;Ruitong Jiang ,&nbsp;Jianan Chang ,&nbsp;Luyi Cai ,&nbsp;Yuhan Zhu ,&nbsp;Yusu Yin ,&nbsp;Liu Shao ,&nbsp;Meiqin Wu ,&nbsp;Jianheng Zhang ,&nbsp;Peimin He","doi":"10.1016/j.marenvres.2025.107190","DOIUrl":"10.1016/j.marenvres.2025.107190","url":null,"abstract":"<div><div>This study aimed to investigate the carbon fixation capacity of macroalgae in the mussel farming area of Gouqi Island and to quantify further the carbon fixation effect during the cultivation process of macroalgae. Using high-abundance Na₂¹³CO₃ as a tracer combined with stable isotope technology, we quantitatively analyzed the photosynthetic carbon fixation rate, biological carbon sequestration amount, and particulate organic carbon generation rate of three macroalgae species—<em>Ulva pertusa</em>, <em>Sargassum horneri</em>, and <em>Grateloupia turuturu</em>—across a range of temperatures (5 °C, 10 °C, 15 °C, 20 °C, 25 °C, 30 °C). The results showed that <em>Ulva pertusa</em> exhibited the highest photosynthetic carbon fixation rate and carbon sequestration amount, peaking at 25 °C and 20 °C, respectively. Specifically, the photosynthetic carbon fixation rate reached 451.2 ± 21.8 μg C/(g FW·h), and the biological carbon sequestration amount was 235.5 ± 4.2 μg C/(g FW·h). <em>Sargassum horneri</em> followed closely, with a photosynthetic carbon fixation rate of 450.3 ± 28.1 μg C/(g FW·h) at 15 °C and a biological carbon sequestration rate of 189.0 ± 1.8 μg C/(g FW·h) at 25 °C. <em>Grateloupia turuturu</em> exhibited a relatively lower photosynthetic carbon fixation ability, achieving a maximum rate of 290.0 ± 20.4 μg C/(g FW·h) at 20 °C. <em>Ulva pertusa</em> demonstrated broad temperature adaptability and strong carbon sequestration capacity, thriving within a suitable growth temperature range of 15–25 °C. <em>Sargassum horneri</em> maintained a rapid growth rate at 5 °C and exhibited high photosynthetic carbon fixation efficiency at 15 °C. However, high temperatures (≥25 °C) significantly inhibited its photosynthetic activity. In contrast, <em>Grateloupia turuturu</em> showed relatively low photosynthetic and carbon fixation efficiency at high temperatures but had enhanced carbon fixation ability at 15 °C and 20 °C. This study provides quantitative data for evaluating the carbon fixation effects of macroalgae and demonstrates the feasibility of using stable isotope technology to rapidly and accurately determine the carbon sequestration capacity of macroalgae. These findings offer a scientific basis for the accounting of biological carbon sequestration and support the application of macroalgae in achieving carbon neutrality.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107190"},"PeriodicalIF":3.0,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922039","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":"Comparative assessment of silver nanoparticle and silver nitrate toxicities in Mytilus galloprovincialis","authors":"Zimin Cai ,&nbsp;Zihan Xing ,&nbsp;Mingzhe Xu ,&nbsp;Yuting Zhao ,&nbsp;Lin Ye ,&nbsp;Wei Sun ,&nbsp;Ruijia Tao ,&nbsp;Liuya Mi ,&nbsp;Bowen Yang ,&nbsp;Lei Wang ,&nbsp;Yancui Zhao ,&nbsp;Xiaoli Liu ,&nbsp;Liping You","doi":"10.1016/j.marenvres.2025.107184","DOIUrl":"10.1016/j.marenvres.2025.107184","url":null,"abstract":"<div><div>Silver nanoparticles (AgNPs) and Ag⁺ ions are both detected in aquatic environments, posing potential risks to marine ecosystems. <em>Mytilus galloprovincialis</em> is an effective model for monitoring marine environments. In this study, AgNPs were synthesized using a chemical approach, and to distinguish the toxicological effects of AgNPs and AgNO₃ in <em>M. galloprovincialis</em>, experiments were conducted using various treatments (control, AgNO₃, AgNPs, and AgNPs + cysteine). Our findings revealed that the uptake rate of AgNPs and AgNO₃ was different, they predominantly accumulated in the hepatopancreas and gills. qRT-PCR analysis showed varying degrees of alterations in immune genes of <em>HSPA12A, TCTP, sHSP22, sHSP24.1</em>, <em>P63, Bcl-2,</em> and <em>Ras</em>. Histopathological analysis demonstrated disrupted epithelial cell arrangements and connective tissue damage in the hepatopancreas, with the AgNPs exhibiting the most severe damage compared to AgNO₃. In addition, AgNPs significantly induced oxidative stress in hemocytes compared to AgNO₃, resulting in elevated apoptosis rates. These findings contribute to a deeper understanding of the AgNPs and AgNO₃ interactions in marine environments and provide a theoretical basis for the evaluation of marine pollution and biomonitoring strategies.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107184"},"PeriodicalIF":3.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892296","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":"Records of biogeochemical variables for Semarang Bay, Indonesia, facing potential coastal deoxygenation","authors":"A'an Johan Wahyudi ,&nbsp;Hanif Budi Prayitno ,&nbsp;Afdal ,&nbsp;Lestari ,&nbsp;Rachma Puspitasari ,&nbsp;Lilik Maslukah ,&nbsp;Mochamad Riza Iskandar ,&nbsp;Edwards Taufiqurrahman ,&nbsp;Suci Lastrini ,&nbsp;Ricky Rositasari","doi":"10.1016/j.marenvres.2025.107183","DOIUrl":"10.1016/j.marenvres.2025.107183","url":null,"abstract":"<div><div>Coastal areas worldwide, including the Indonesian seas, are experiencing a decline in dissolved oxygen (DO) concentration, leading to deoxygenation. Semarang Bay, due to its semi-enclosed nature and significant terrestrial input, is particularly vulnerable to this phenomenon. We analyzed multi-annual records of biogeochemical variables, including nutrient concentrations, chlorophyll-<em>a</em> (Chl-<em>a</em>), and both surface and bottom dissolved oxygen (DO), to assess the possibility of coastal deoxygenation. The study focuses specifically on bottom DO to understand its variability and potential impact on the sediment-water interface. It aims to evaluate the potential for coastal deoxygenation in the bay region by examining sediment stable isotope signatures and biogeochemical variable records in connection with their potential influence on DO at the sediment-water interface. The analysis reveals contrasting trends in sea surface temperature, bottom temperature, and DO concentrations. Spatial analysis uncovers distinct patterns, emphasizing the influence of monsoon seasons on temperature, DO, and Chl-<em>a</em> concentrations. The study notes a declining trend in DO and bottom DO (i.e., −0.055 and −0.048 mmol/m³ per year, respectively), underscoring the need to monitor dissolved oxygen dynamics at the sediment-water interface. Isotope analysis of surface sediment suggests potential sediment deoxygenation at specific sampling sites, irrespective of proximity to the shoreline or bathymetric depth, with similar indications in flood channels. This research offers valuable insights into the complex dynamics of coastal biogeochemistry in Semarang Bay. The findings underscore the need for further research to refine models and explore alternative approaches to address the identified limitations, thereby contributing to enhanced environmental monitoring and assessment in the study site.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107183"},"PeriodicalIF":3.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879416","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":"Terrestrial inputs of nutrients and dissolved organic carbon to the Arctic Ocean and their influence on primary production","authors":"Silpa Mathew ,&nbsp;Jong-Kook Hong ,&nbsp;Ji-Hoon Kim ,&nbsp;Meilian Chen ,&nbsp;Jin Hur","doi":"10.1016/j.marenvres.2025.107182","DOIUrl":"10.1016/j.marenvres.2025.107182","url":null,"abstract":"<div><div>The Arctic region, warming at approximately four times the global average, is experiencing rapid climatic shifts that could result in a summer ice-free Arctic Ocean by mid-century. This review compiles recent studies on Arctic biogeochemistry, highlighting the significant role of continental runoff—including rivers, permafrost, and glaciers—in nutrient cycling, carbon dynamics, and pelagic primary production. Particularly in the East Siberian Shelf, terrestrial inputs substantially contribute to the export of dissolved organic carbon (DOC) and nutrients, thus impacting regional ecosystems and primary productivity. Subsea permafrost emerges as a key DOC exporter, with estimated fluxes reaching 700 to 1000 Tg yr⁻¹ under extreme scenarios. In the Arctic's low-light environment, photodegradation plays a vital role in transforming terrestrial dissolved organic matter (DOM) into nutrients. Notably, phytoplankton levels in the Arctic Ocean have surged by about 30 % since the 1990s. Projections indicate that by this century's end, the Arctic Net Primary Productivity (NPP) could approach 700 Tg C yr⁻¹, with a more significant increase in the Eurasian Arctic than in the American and Barents Sea regions. This trend is mainly due to terrestrial inputs and permafrost thawing effects. Research in the Arctic, particularly on biogeochemistry and phytoplankton dynamics in response to climate change, faces challenges from extreme weather, data scarcity, and complex environmental processes. Therefore, continuous monitoring and targeted research, especially in the East Siberian Shelf and subsea permafrost regions, are crucial for overcoming these challenges and improving our understanding of the changing Arctic Ocean ecosystem.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107182"},"PeriodicalIF":3.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886984","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":"Adaptability of Chub mackerel (Scomber japonicus) under El Niño and La Niña conditions: Body condition, feeding, and contaminant analysis","authors":"Zhenfang Zhao ,&nbsp;Guanyu Hu ,&nbsp;Bilin Liu ,&nbsp;Yingcong Chen ,&nbsp;Xiaoting Jiang ,&nbsp;Xinjun Chen","doi":"10.1016/j.marenvres.2025.107185","DOIUrl":"10.1016/j.marenvres.2025.107185","url":null,"abstract":"<div><div>This study analyzes the effects of the El Niño and La Niña phenomena on the physiological ecology and mercury contamination levels of Chub mackerel, using samples collected from the Northwest Pacific region in 2021 (a La Niña year) and 2023 (an El Niño year). We analyzed body condition (Fulton's K index), trophic dynamics (δ¹³C, δ¹⁵N isotopes), and mercury levels in individuals across size classes (100–300 mm). The results indicate that, smaller mackerel (100–200 mm) exhibited significantly higher K values during El Niño (<em>p</em> &lt; 0.05), whereas larger conspecifics (&gt;250 mm) showed reduced condition. Sexual dimorphism in <em>K</em> (females &gt; males) observed in 2021 disappeared under El Niño, suggesting climate-mediated shifts in energy allocation. Trophic niche breadth expanded during El Niño (6.88 vs. 4.12 SEAc), reflecting dietary diversification toward lower-trophic prey, as evidenced by depleted δ¹³C and δ¹⁵N values. Mercury concentrations surged in 2023, particularly in medium-to-large fish (151–300 mm, <em>p</em> &lt; 0.01). This pattern likely reflects climate-driven intensification of mercury production under colder, oxygen-depleted conditions combined with trophic shifts toward larger, higher-trophic prey that biomagnify mercury more efficiently, collectively indicating that ENSO variability modulates both pollution bioavailability and contaminant transfer dynamics in pelagic food webs. These findings underscore the dual threats of climate-driven ecological disruption and pollution amplification in pelagic ecosystems. By elucidating size- and sex-specific vulnerabilities, this work provides actionable insights for adaptive fisheries management and highlights the urgent need to integrate climate and contaminant monitoring in marine conservation strategies.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107185"},"PeriodicalIF":3.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896098","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":"Environmental effects monitoring of offshore oil and gas activities on the Norwegian continental shelf: A review","authors":"Jonny Beyer ,&nbsp;Kari E. Ellingsen ,&nbsp;Nigel G. Yoccoz ,&nbsp;Pål Buhl-Mortensen ,&nbsp;Torgeir Bakke","doi":"10.1016/j.marenvres.2025.107166","DOIUrl":"10.1016/j.marenvres.2025.107166","url":null,"abstract":"<div><div>This review examines the evolution and findings of Norway's offshore environmental monitoring (OEM) program over the past five decades. The program targets soft sediments, water column organisms, and deep-water epifauna across the Norwegian Continental Shelf (NCS) to assess the impacts of offshore oil and gas activities. The program is required by Norwegian authorities and financed by oil and gas companies operating on the NCS. Initially prompted by widespread effects from oil-contaminated drill cuttings (OBM-DC) discharges, the first sediment quality monitoring came in 1973, and grew into a regional sediment quality monitoring program in 1995. A ban on discharge of OBM cuttings on the NCS was implemented in 1993, and the following years saw a clear reduction in areas with impacted sediments. Currently, significant contamination and macrofauna disturbances are typically confined within 250–500 m of DC discharge points. In the 1990s, concerns over increasing produced water (PW) discharges led to development of effect monitoring in the water column, with focus on fish and mussels as bioindicators. These <em>in situ</em> effect surveys have shown localized impacts near PW outlets. Other fish surveys have revealed elevated DNA adduct levels in demersal fish (haddock) in several areas on the NCS, but the causality of this phenomenon remains unclear. Deep-water petroleum exploration has necessitated visual surveys to map protected benthic epifauna communities, such as corals and sponges, though the methodology's suitability for assessing biological impact is uncertain. Future recommendations include redesigning sediment surveys to address combined stressors from the petroleum industry, fisheries, and climate change, adopting recent methodological and statistical advancements, and improving integration across program elements. This review describes how the offshore monitoring on the NCS has evolved in response to changing environmental concerns, regulations and industrial practices, providing insights for enhancing ecological protection in offshore petroleum activities.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107166"},"PeriodicalIF":3.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922037","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}