Deep-Sea Research Part I-Oceanographic Research Papers最新文献

{"title":"Coral and float-derived observations of flow around SG_áan K_ínghlas-Bowie Seamount in the Northeast Pacific: revisiting the Taylor cone","authors":"Tetjana Ross,&nbsp;Cherisse Du Preez,&nbsp;Debby Ianson","doi":"10.1016/j.dsr.2025.104499","DOIUrl":"10.1016/j.dsr.2025.104499","url":null,"abstract":"<div><div>Seamounts are oases of life within the deep sea. Recruitment mechanisms to these isolated systems, where benthic larvae spend weeks or months in the pelagic, remain a mystery. Persistent closed circulation patterns ('Taylor cones') are proposed to increase local retention around these underwater mountains, but the idea remains controversial. Some coral species may help us understand this puzzle. Cold-water corals, such as <em>Primnoa pacifica</em> and <em>Parastenella</em> spp., grow slowly, orienting their fan perpendicular to, and curved towards, the mean-flow direction. We took advantage of these long-term natural current meters, using a combination of benthic imagery, sea-surface height, Argo trajectory, hydrographic, and reanalysis model data to examine flow around S<span><math><mrow><munder><mi>G</mi><mo>_</mo></munder></mrow></math></span>áan <span><math><mrow><munder><mi>K</mi><mo>_</mo></munder></mrow></math></span>ínghlas-Bowie Seamount (S<span><math><mrow><munder><mi>K</mi><mo>_</mo></munder></mrow></math></span>-B) in the Northeast Pacific. We found that corals living on the seafloor on all sides of the seamount experienced a north to south flow (opposite to regional circulation), showing no evidence of a persistent closed circulation. We suggest that a combination of remotely generated internal tides breaking on the plateau and steering/rectification of local tides below 500m could cause these strong coherent bottom currents. Finally, we also observed transient clockwise circulation around the seamount when Haida Eddies became trapped. Eddies provide a regular mechanism for larval and food transport from the coast to S<span><math><mrow><munder><mi>K</mi><mo>_</mo></munder></mrow></math></span>-B. Once trapped, the closed clockwise circulation lasts months and likely aids in local retention and self-recruitment. Our findings reveal the dynamic nature of flow over seamount-like features and the importance of understanding this complexity in the broader context of marine conservation.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"220 ","pages":"Article 104499"},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On Anguillosyllis cf. hessleri Maciolek, 2020 – A species complex from the Clarion-Clipperton zone, abyssal central Pacific","authors":"Regan Drennan ,&nbsp;Lenka Neal ,&nbsp;Helena Wiklund ,&nbsp;Eva C.D. Stewart ,&nbsp;Muriel Rabone ,&nbsp;Corie Boolukos ,&nbsp;Innes Clatworthy ,&nbsp;Zuzana Jungmanova ,&nbsp;Thomas G. Dahlgren ,&nbsp;Adrian G. Glover","doi":"10.1016/j.dsr.2025.104453","DOIUrl":"10.1016/j.dsr.2025.104453","url":null,"abstract":"<div><div>The benthic annelid fauna of polymetallic nodule fields in the eastern Clarion-Clipperton Zone (CCZ) has recently been the subject of taxonomic investigations aiming to document the biodiversity of this region. While investigating the annelids, a particularly high diversity was discovered within the genus <em>Anguillosyllis</em> Day, 1963 using a combination of morphological and molecular approaches. Initially, 38 specimens of <em>Anguillosyllis</em> were assigned to the known CCZ species <em>Anguillosyllis hessleri</em> Maciolek, 2020 based on morphological examination, including examination of the type specimen. However, our genetic data revealed that these specimens represent four distinct lineages (putative species) based on COI and 16S markers. Further morphological investigation using SEM revealed a complex structure of the prostomium, which could potentially differentiate these lineages. However, as no molecular or SEM data are available from the type specimen of <em>A. hessleri</em>, we cannot ascertain which, if any, of these lineages represent the known species described by Maciolek (2020). Thus, currently, we can only assign CCZ specimens to <em>Anguillosyllis</em> cf. <em>hessleri</em> and further distinguish the lineages by assigning each a unique code in the form of “NHM_####”. The SEM observations are the first reported for <em>Anguillosyllis</em>, revealing new taxonomic characters that may be used to disentangle the <em>A. hessleri</em> species complex and be of use in taxonomy of <em>Anguillosyllis</em> in general.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"220 ","pages":"Article 104453"},"PeriodicalIF":2.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early signs of recovery suggested by changes in the structure and function of deep-sea megabenthic communities on a seamount 19 years after fishing","authors":"Savannah L. Goode ,&nbsp;Ashley A. Rowden ,&nbsp;Malcolm R. Clark ,&nbsp;David A. Bowden ,&nbsp;Fabrice Stephenson","doi":"10.1016/j.dsr.2025.104488","DOIUrl":"10.1016/j.dsr.2025.104488","url":null,"abstract":"<div><div>Bottom trawling is the most widespread and severe human disturbance affecting deep-seafloor environments. Seafloor communities inhabiting seamounts (undersea hills or mountains) are especially vulnerable to trawling impacts as they are often dominated by long-lived, sessile epifauna (e.g., cold-water corals) that are easily damaged and/or removed by fishing gear. Trawling on seamounts is spatially concentrated, compounding effects on the benthos. However, the extent to which communities on seamounts that are closed to fishing can recover from earlier trawling impacts is uncertain. Previous studies have hypothesised that any post-trawling recovery of benthic communities on seamounts will probably be initially patchy, recolonised by surviving remnant populations, and may take several decades or more to occur. A fine-scale approach is thus needed to understand and determine the spatio-temporal dynamics of recovery. To address this need, we studied a New Zealand seamount located on Chatham Rise, Morgue, that was heavily trawled in the 1990s before being closed to fishing in 2001. We analysed seafloor imagery collected with a towed camera during repeat surveys in 2001, 2005, 2009, 2015, and 2020 to examine potential changes in benthic community structure and function after trawling ceased. A temporal shift in community structure driven by changes in the abundances of several taxa (mainly bryozoans, stylasterid hydrocorals, and comatulid crinoids) was observed over the study timescale, indicating the communities may have been in the early stages of post-trawling recovery. However, structural variation between different seamount sides and the summit (i.e., spatial variation) was still more pronounced than temporal variation and reflected the trawl fishing footprint. Community function showed little sign of ongoing recovery overall, though some change (driven by colonisation by stylasterid hydrocorals and bryozoans) indicative of early recovery was observed for communities on the seamount summit. Juvenile colonies of the reef-forming stony coral <em>Solenosmilia variabilis</em> were also observed between 8 and 19 years after the closure, demonstrating that the fisheries closure may have facilitated the early recovery process of this species and its associates. Overall, this work has important implications for the spatial management of seamounts vulnerable to bottom-contact fishing operations.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"220 ","pages":"Article 104488"},"PeriodicalIF":2.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How adverse are Mediterranean waters to the deep-sea fauna? A study of the Gibraltar exchange based on Mollusca from the “BALGIM” expedition","authors":"Utrilla O ,&nbsp;Gofas S ,&nbsp;Salas C","doi":"10.1016/j.dsr.2025.104492","DOIUrl":"10.1016/j.dsr.2025.104492","url":null,"abstract":"<div><div>The BALGIM expedition was designed to assess the distribution of marine organisms in the transition from Gulf of Cadiz to Mediterranean Sea across the Strait of Gibraltar. There were 99 hauls below 200 m depth, down to 2110 m. Two matrixes with abundance data were constructed using the data of gastropods and scaphopods from this study and those of bivalves studied earlier. Species were scored according to their bathymetric and geographic distribution as (1) deep-sea species occurring exclusively in the Atlantic, or (2) deep-sea species reported as living both in the Atlantic and the Mediterranean. A total of 4641 live-taken individuals corresponding to 154 species of molluscs collected alive were identified, and almost twice as many (243 species) including those collected as shells only. The samples do not form clearly defined clusters based on their faunal content. More than half of the species (84) occur both in the Mediterranean Sea and the Atlantic Ocean. Most of the 62 species with an Atlantic-only distribution are associated to the cool or cold waters below 600 m depth along the Moroccan margin, and are barred by the Mediterranean Outflow Water in the northern part of Gulf of Cadiz. Four species are preferent of the warm but low-saline North Atlantic Central Water, also off the Moroccan margin. The Mediterranean outflow largely shares a set of species also occurring in the Mediterranean, whereas there are no Mediterranean-only deep-sea species. Therefore, variation in salinity in a range of 1–2 ‰ is not critical compared to temperature which explains most of the restricted distributions.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"220 ","pages":"Article 104492"},"PeriodicalIF":2.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The near-bottom turbulence induced resuspension of seabed material in deep sea","authors":"Cong Hu ,&nbsp;Ting Zhang ,&nbsp;Chunsheng Ji ,&nbsp;Yonggang Jia","doi":"10.1016/j.dsr.2025.104491","DOIUrl":"10.1016/j.dsr.2025.104491","url":null,"abstract":"<div><div>Marine seabed material resuspension holds significant importance across various fields, from ocean engineering to environmental science. However, it has been seldom explored in deep-sea environments. In this study, we conducted an in-situ field observation using a lander at the toe of Shenhu Canyon (1405 m). A sediment resuspension event and down-slope current were simultaneously recorded. The suspended particulate concentration synchronously varied with current velocity. Despite the occurrence of resuspension, the velocity and near-bed shear stress were below their critical values. This phenomenon was attributed to the resuspension of loose aggregates, which required a low current velocity exceeding 0.1 m/s and small near-bed shear stress. Sweep was identified as the primary contributor to resuspension, followed by ejection, while the contributions of down-deceleration and up-acceleration were negligible. An intriguing observation was the bimodal characteristic of both near-bed shear stress and sweep. At the highest suspended particulate concentration, both parameters decreased to small values. Additionally, the amplitude of acoustic backscatter increased with distance from the seabed in the near-bed vertical profile. This can be explained by the slow settling of the resuspended loose aggregates, shedding light on the formation of giant bottom nepheloid layers in the South China Sea.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"219 ","pages":"Article 104491"},"PeriodicalIF":2.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Occurrence of vent-derived organic falls and associated fauna at hydrothermal vents on the Indian ridge: Implications for an underestimated food source at hydrothermal vent fields","authors":"Klaas Meyn ,&nbsp;Terue C. Kihara ,&nbsp;Andrew K. Sweetman ,&nbsp;Pedro Martínez Arbizu ,&nbsp;Thomas Kuhn","doi":"10.1016/j.dsr.2025.104489","DOIUrl":"10.1016/j.dsr.2025.104489","url":null,"abstract":"<div><div>Organic falls, hydrothermal vent fields and seeps rely primarily on chemosynthetic organic production leading to a carbon enriched habitat set against the oligotrophic deep-sea background. These habitats are typically inhabited by novel faunal assemblages with similar functional characteristics and often show harsh environmental gradients over relatively small scales with severe effects on diversity and density compared to the benthic background fauna. While the importance of particulate organic matter (POM) has been pointed out, the presence of POM as local accumulated organic deposits within hydrothermal vent fields has not been studied.</div><div>Here, we present the first observations of organic deposits within active vents in the Indian Ocean including observations of giant capitellid worms inhabiting these organic mats with a length of up to 30 cm. This potential new species occurred in shrimp carcasses, the exuvia of <em>Rimicaris kairei</em>, on two hydrothermal vent sites from the Indian Ocean. We used imagery to build a high-resolution 3D reconstruction model of one side of a chimney complex, including the 4.8 m² surface area of the exuvia deposit. The capitellids occurred in dense aggregations and may contribute significantly to the food web of active hydrothermal vent fields, representing a possible overlooked food source for benthic and demersal predators. In addition, we report on observations on further organic deposit types and compare their associated epifauna along the mid-ocean ridges of the Indian Ocean. The exuvia deposits where capitellids were present appeared to be compacted and compressed implicating a potential role in stabilizing seafloor habitat. This is the first record of the family Capitellidae in organic deposits at hydrothermal vent fields, where they may serve as ecosystem engineers.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"220 ","pages":"Article 104489"},"PeriodicalIF":2.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The trapping of Agulhas Rings in the South Brazil Bight","authors":"Piero S. Bernardo ,&nbsp;Cauê Z. Lazaneo ,&nbsp;Ilson C.A. da Silveira ,&nbsp;João P.M. Amorim ,&nbsp;Milton Borges-Silva ,&nbsp;Pedro W.M. Souza-Neto ,&nbsp;Marcelo Dottori ,&nbsp;Wellington C. Belo ,&nbsp;Renato P. Martins ,&nbsp;Luiz A.A. Guerra ,&nbsp;Daniel L. Moreira","doi":"10.1016/j.dsr.2025.104486","DOIUrl":"10.1016/j.dsr.2025.104486","url":null,"abstract":"<div><div>The South Brazil Bight is a section of the Brazilian margin mainly dominated by the poleward Brazil Current flow, its meanderings and eddies. We evaluated the mean mesoscale activity for the region, and an anticyclonic feature was highlighted over the São Paulo Plateau. Around that feature, cyclonic eddies were also accentuated. The combination of these structures dominate the region, forming an eddy corridor. Using eddy detection dataset, we reveal that the filtered positive-<span><math><mi>Ψ</mi></math></span>-signal on the plateau was related to the presence of anticyclones. The cyclones in the region originate both locally and remotely, whereas most anticyclones predominantly have remote origins. More than 95% of these anticyclones were Agulhas Rings, which could or could not have been subjected to splitting or merging processes. On the plateau we observe an average of 5.3 anticyclones per year. However, this rate is related not only to the number of anticyclones but also to the time they remain there. We observe that Agulhas Rings reside individually in the region for 50.8 days on average, consequently, they occupy the plateau for almost 75% of the year. During half of the residence time, there is a multi-pattern interaction with cyclonic eddies. This relationship between eddies of opposite polarity creates a shielding process. The anticyclones become shielded and trapped by the cyclones, have their progress delayed, and their course deflected towards the Brazil Current.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"219 ","pages":"Article 104486"},"PeriodicalIF":2.3,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scale worm diversity in abyssal and hadal environments (Aphroditiformia, Annelida)","authors":"Brett C. Gonzalez ,&nbsp;Alejandro Martínez ,&nbsp;Alan J. Jamieson","doi":"10.1016/j.dsr.2025.104490","DOIUrl":"10.1016/j.dsr.2025.104490","url":null,"abstract":"<div><div>The deep sea is dominated by diverse invertebrate communities, of which annelids are among the most prolific. Within such annelids, scale worms (Aphroditiformia) have long been recognized as a major component to the composition of deep-sea communities, yet their overall diversity and distribution is unknown. To better understand this diversity, we provide the first comprehensive census of scale worms inhabiting depths at or below 3000 m. Our literature analyses across all species recognized by the World Register of Marine Species (WoRMS) revealed 418 records and 122 species spread across Aphroditidae, Polynoidae and Sigalionidae, of which the second was the most species rich. Within Polynoidae, 12 species were identified as hadal zone exclusives. Caveats of the dataset are discussed. Historical, recently published, and new <em>in situ</em> observations of Aphroditiformia at hadal depths are also presented. These results provide a baseline for future investigations across deep sea Aphroditiformia.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"220 ","pages":"Article 104490"},"PeriodicalIF":2.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the effects of climate change on dissolved oxygen in the Gulf of Oman","authors":"Shirin Farkhani,&nbsp;Nasser Hadjizadeh Zaker","doi":"10.1016/j.dsr.2025.104487","DOIUrl":"10.1016/j.dsr.2025.104487","url":null,"abstract":"<div><div>In this paper, we investigated the impacts of climate change on dissolved oxygen (DO) concentration in the Gulf of Oman using numerical modeling. We simulated and compared the DO concentration of the Gulf of Oman through the historical (1980–2000) and future (2080–2100) periods. Results demonstrated that in the future climate, the DO concentration levels in the upper 400 m of the Gulf of Oman will decrease. In the surface mixed layer, the mean DO concentration will decrease by 0.4, 0.5, and 0.7 mg/l in summer, and by 0.2, 0.3, and 0.4 mg/l in winter. Below the surface mixed layer, the mean DO concentration will decrease by 0.5, 0.6, and 0.8 mg/l in summer, and by 0.6, 0.7, and 1 mg/l in winter. The ventilation effect of the Persian Gulf outflow on the Gulf of Oman's water will also decrease in the future. The future climate deoxygenation will expand hypoxic waters upward. In summer, the mean thickness of the surface layer with DO &gt; 2 mg/l will decrease from 40 m in the historical period to approximately 32, 26, and 23 m in the RCP 2.6, RCP 4.5, and RCP 8.5 scenarios, respectively. In winter, the hypoxic boundary will shift from 100 m depth in the historical period to about 91, 84, and 80 m in RCP 2.6, RCP 4.5, and RCP 8.5 scenarios, respectively.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"219 ","pages":"Article 104487"},"PeriodicalIF":2.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mg/Ca from mussel shells rather than δ18O as a promising temperature proxy for hydrothermal vent ecosystems","authors":"V. Mouchi ,&nbsp;K. Nedoncelle ,&nbsp;O. Bruguier ,&nbsp;Z. Garmirian ,&nbsp;N. Le Bris ,&nbsp;F. Lartaud","doi":"10.1016/j.dsr.2025.104485","DOIUrl":"10.1016/j.dsr.2025.104485","url":null,"abstract":"<div><div>Minor and trace metal fluctuations in biogenic carbonates have been demonstrated to be important potential environmental tracers in coastal areas, but remained poorly studied in deep-sea environments. For the first time, this study assesses the use of Mg/Ca signal as a thermometer proxy in hydrothermal vent ecosystems together with the analysis of oxygen stable isotope composition. <em>Bathymodiolus azoricus</em> and <em>B. thermophilus</em> mussels were collected at three hydrothermal vent fields from the mid-Atlantic ridge (Rainbow, Menez Gwen) and the East Pacific Rise (EPR 9°50N), presenting contrasted temperature and chemical habitat conditions. The variation of Mg/Ca was analysed via LA-ICP-MS and is revealed suitable to reconstruct temperature variations in these ecosystems, presumably due to stable Mg compositions of the seawater surrounding hydrothermal systems. Temperature anomalies inferred from Mg/Ca ratios can be good tracers of fluid pulses. Important fluid emissions appear however to generate major growth cessation in shell mineralization. Temperatures inferred from Isotope Ratio Mass Spectrometry (IRMS) δ¹⁸O analyses systematically underestimated the measured values in the environment. The isotopic disequilibrium is likely due to pH fluctuations in the mussel habitat, in the vicinity of vent fluid discharges, and/or interactions with the symbiotic chemosynthetic bacteria. Those results will first benefit to the ecological study of deep-sea mussels, but also provide a promising contribution for the study of the environmental dynamic in hydrothermal systems at short (daily) to long-term (pluri-annual) scales, recorded in the calcite material of bivalves.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"219 ","pages":"Article 104485"},"PeriodicalIF":2.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}