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

{"title":"Suppressed vertical propagation of near-inertial waves by consecutive tropical cyclones in the northern South China Sea","authors":"Wulinan Guo ,&nbsp;Jiexin Xu ,&nbsp;Yankun Gong ,&nbsp;Zifei Chen ,&nbsp;Zhiwu Chen ,&nbsp;Yinghui He ,&nbsp;Shuqun Cai","doi":"10.1016/j.dsr.2026.104666","DOIUrl":"10.1016/j.dsr.2026.104666","url":null,"abstract":"<div><div>Mooring data near the Yitong Shoal in the South China Sea during July 2024 were used to analysis near-inertial waves (NIWs) induced by three consecutive tropical cyclones (TCs, hereafter TC1, TC2 and TC3). All three TCs generated marked energy increases in near-inertial band. Though induced by similar wind stress, NIWs from TC1 resembled those reported in previous studies, whereas TC2 and TC3 exhibited distinct characteristics. Compared with TC1, the propagation depth of NIWs induced by TC2 reduced by 15.56% whilst the maximum NIW velocity increased by 30%, and the propagation depth of NIWs by TC3 reduced by 33.33% whilst the maximum NIW velocity increased by 60%, indicating amplified yet suppressed vertical propagation NIWs. Directional decomposition and rotary spectra indicated that NIWs were downward-propagating from the surface, suggesting that they were mainly generated by TCs. Wind work analysis showed increased energy transfer into the mixed layer during consecutive TCs. They are also influenced by near-inertial currents induced by preceding TCs. During consecutive TCs period, oceanic stratification changed significantly, keeping weaken between 40 and 70 m but strengthen between 70 and 150 m, resulting in a reduction of NIW vertical wavelengths and group velocities, indicating a suppressed vertical propagation of NIWs. Enhanced shear and low <em>Ri</em> appeared where oceanic stratification was strengthened, suggesting an enhanced mixing. Consequently, near-inertial kinetic energy generated by TC3 dissipated largely in the shallowest depth. These results provide new insights into how consecutive extreme TCs modulate NIWs and upper-ocean mixing, highlighting the differences between consecutive TCs and single TC in induced NIWs.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"228 ","pages":"Article 104666"},"PeriodicalIF":2.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174174","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":"Horizontal evolution characteristics of near-inertial sea surface currents induced by the tropical cyclones in the Guangdong-Hong Kong-Macao Greater Bay area","authors":"Lei Ren ,&nbsp;Hexu Wang ,&nbsp;Beinuo Zhou ,&nbsp;Xiaofan Lou ,&nbsp;Zhenglin Li ,&nbsp;Long Bai ,&nbsp;Fan Yang ,&nbsp;Zhenchang Zhu ,&nbsp;Fearghal O'Donncha ,&nbsp;Jun Wei ,&nbsp;Michael Hartnet","doi":"10.1016/j.dsr.2026.104665","DOIUrl":"10.1016/j.dsr.2026.104665","url":null,"abstract":"<div><div>Near-inertial currents driven by barotropic wind forcing are pivotal in upper-ocean mixing and transport. This study investigates the horizontal structure and energy distribution of Near-Inertial Surface Currents (NISCs) in the South China Sea using High-Frequency Radar (HFR) measurements, compensating for the lack of large-scale continuous observations, particularly under tropical cyclone (TC) conditions. Wavelet and power spectral analyses reveal that NISCs, while secondary to tides under normal conditions, become the dominant mode of motion during intense TCs like Choi-wan. The currents organize into a cyclonic circulation with a 1–2 day period, exhibiting significant east-west coherence and enhanced velocities during TCs. Energy analysis confirms that the near-inertial wind stress is the primary forcing mechanism, with TC passages driving substantial energy accumulation and nonlinear tidal-inertial interactions leading to frequency shifts and dissipation. These findings underscore the critical role of wind forcing, especially during extreme weather, in generating and modulating NISCs.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"228 ","pages":"Article 104665"},"PeriodicalIF":2.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174177","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":"Characterization and stabilization pathways of water-extractable dissolved organic matter in the Mariana Trench sediments","authors":"Jiayue Geng ,&nbsp;Min Luo ,&nbsp;Kexin Zheng ,&nbsp;Linying Chen ,&nbsp;Tingcang Hu ,&nbsp;Dong Zhang ,&nbsp;Jingqian Xie ,&nbsp;Duofu Chen","doi":"10.1016/j.dsr.2026.104667","DOIUrl":"10.1016/j.dsr.2026.104667","url":null,"abstract":"<div><div>Hadal trenches have been taken as hotspots for organic carbon burial and microbial activity in the deep-sea settings. In this study, water-extractable (WEOM) and porewater dissolved organic matter (PWOM) were analyzed from two sites in the Mariana Trench—MT04 (clay-dominated) and MT05 (laminated diatom mat, LDM sediments)—to evaluate the influence of mineral association on dissolved organic matter composition, optical characteristics, and stable carbon isotopic signatures. Compared to the LDM core, WEOM in the clay-dominated core shows higher SUVA₂₅₄, humification index (HIX), and A₂₅₃/A₂₀₃ values, but the fluorescence index (FI) is lower. These optical characteristics indicate higher aromaticity, a greater degree of humification and lower bioavailability of WEOM. Such patterns suggest that clay minerals selectively adsorb and occlude aromatic- and carboxyl-rich dissolved organic matter. This mineral association reduces microbial accessibility and enhances long-term preservation. Comparison between WEOM and PWOM further reveals distinct compositional and functional differences within the sedimentary organic carbon pool. WEOM is tightly associated with mineral surfaces, enriched in aromatic and humified components, and exhibits stronger stability, whereas PWOM contains more protein-like and labile constituents. The decreasing trend in δ¹³C (δ¹³C of sediment total organic carbon &gt; δ¹³C of WEOM &gt; δ¹³C of PWOM) indicates that selective microbial degradation and mineral protection jointly regulate dissolved organic matter transformation pathways. Therefore, WEOM represents a mineral-associated, relatively stable carbon reservoir that plays a crucial role in long-term organic carbon preservation in the deep-sea environment.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"228 ","pages":"Article 104667"},"PeriodicalIF":2.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174171","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":"Carbon cycle system and origin of organic molecules in subseafloor serpentinized rocks of the Atlantis Massif (Mid-Atlantic ridge, 30°N) oceanic core complex","authors":"Amila Sandaruwan Ratnayake ,&nbsp;Yoshikazu Sampei ,&nbsp;Minoru Ikehara ,&nbsp;David Lawrence Dettman","doi":"10.1016/j.dsr.2025.104643","DOIUrl":"10.1016/j.dsr.2025.104643","url":null,"abstract":"<div><div>The Atlantis Massif (Mid-Atlantic Ridge, 30°N) provides a natural laboratory in the deep ocean for understanding the links among the hydrothermal system, serpentinization, abiogenic organic synthesis, and microbial activity in mantle-derived rocks. This study examined the potential origin of organic compounds in the subsurface geosphere. Subsurface rocks were recovered using seabed drilling during the International Ocean Discovery Program (IODP) Expedition 357 “Atlantis Massif Serpentinization and Life”. These samples include a range of lithologies such as dunite, gabbro, basalt, serpentinite, serpentinized dunite, and carbonate. Bulk and molecular organic geochemical parameters were evaluated for thirty-nine rock samples. Total organic carbon (TOC) values range from 0.010 % to 0.174 % (average = 0.058 % ± 0.04). Bulk δ¹³C_total and δ¹³C_TOC values range from −24.6 ‰ to 5.6 ‰ (average = −14.3 ‰ ± 7.2) and from −28.4 ‰ to −26.3 ‰ (average = −27.7 ‰ ± 0.5), respectively. Bulk chemical composition, organic molecular composition, and stable isotope data (including compound-specific) show systematic changes for different lithologies at the Atlantis Massif. δ¹³C values of long-chain <em>n</em>-alkanes (C₂₀ to C₃₅) are higher in minerals of the rocks (average = −17.2 ‰ ± 2.1), indicating the traces of abiotic processes such as Fischer–Tropsch type synthesis. Sterane and hopane biomarkers suggest the occurrence of successive biotic processes in the Atlantis Massif. The low δ¹³C values of esters (i.e., fatty acid methyl ester after the esterification), phenol and alcohol molecules, and the approximate correlation between TOC and total sulfur (TS) contents may indicate a contribution of bacteria. The inverse isotopic trend could result from abiotic processes such as Fischer–Tropsch type synthesis during serpentinization with overprinting by biotic organic matter. Therefore, the submarine hydrothermal systems of the Atlantis Massif show a systematic process of abiotic hydrocarbon formation and their use by bacterial activity.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"227 ","pages":"Article 104643"},"PeriodicalIF":2.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840300","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":"Response of deep-sea cold seep sediments to methane gas migration: Influence on sediment microstructure","authors":"Yue Zhang ,&nbsp;Jing-chun Feng ,&nbsp;Bin Wang ,&nbsp;Hui Zhang ,&nbsp;Yuhang Zhang ,&nbsp;Zhifeng Yang ,&nbsp;Si Zhang","doi":"10.1016/j.dsr.2025.104621","DOIUrl":"10.1016/j.dsr.2025.104621","url":null,"abstract":"<div><div>In deep-sea cold seep sediments, the modification of the microstructure of sediments by methane (CH₄) gas migration will directly affect sediment stability, the accumulation of hydrates, and the ecological and geological environment of the seafloor. Although the decomposition of hydrates caused by geological activities in deep-sea cold seeps lead to CH₄ release, it is still unclear how the migration behavior resulting from the release of CH₄ gas in cold seep areas alters the microstructure of sediments. In this study, we investigated the microstructural evolution of cold seep sediments during CH₄ migration, combined with X-ray computed tomography (X-CT). Here, we set up experimental conditions with different gas flow rates and different sediment particle sizes to study the influence of CH₄ migration on the microstructure modification of sediments, and to analyze its impact on hydrate accumulation and the ecological and geological environment of the seafloor. The changes in the distribution of particle theta (θ) and phi (φ) values indicated that the orientation distribution of coarse and medium sand particles tends to be isotropic. Compared to the initial state, the high gas flow rate caused bubble expansion, resulting in a slight increase of 2–5 % in local porosity. In addition, the migration channel selectivity of CH₄ was higher in coarse and medium sand sediments, while the low connectivity of fine sand sediments limits the migration of CH₄. While the tiny bubbles remaining in the pores of fine sand sediments can enhance the mass transfer and transformation of CH₄.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"227 ","pages":"Article 104621"},"PeriodicalIF":2.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145594845","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":"Seasonal variability of Eddy Kinetic Energy in the Brazil current, South Brazil Bight","authors":"Lucas da Silva Salimene,&nbsp;José Luiz Lima de Azevedo,&nbsp;Leopoldo Rota de Oliveira,&nbsp;André Lopes Brum","doi":"10.1016/j.dsr.2025.104645","DOIUrl":"10.1016/j.dsr.2025.104645","url":null,"abstract":"<div><div>The seasonal variability of Eddy Kinetic Energy (EKE) in the Brazil Current (BC) within the South Brazil Bight (22°S–28°S) remains poorly understood, particularly the role of energy conversion and redistribution terms. Using fourteen years of output from an eddy-resolving numerical simulation, we perform the first seasonal analysis of the EKE budget in this region. We find a pronounced along-stream asymmetry in the EKE seasonal cycle: upstream EKE peaks in summer, while downstream it peaks in winter. The barotropic instability is the primary modulator of EKE within the offshore flank of the mean BC jet. In contrast, baroclinic instability processes dominate beneath the jet core, as indicated by vertical eddy density fluxes. A key finding is that the advection of EKE exhibits the strongest correlation with EKE variability, identifying it as the principal mechanism for redistributing energy from generation sites. While eddy wind work shows no direct influence, pressure work peaks in the region of the Intermediate Western Boundary Current (IWBC), suggesting a potential energy pathway between the BC and the IWBC. Our results establish that the seasonal EKE cycle is not driven by local generation alone but is fundamentally controlled by the advective redistribution of energy from regions of high mesoscale activity.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"227 ","pages":"Article 104645"},"PeriodicalIF":2.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884366","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":"Evaluation of present-day hydrodynamic processes associated to the Belgica Mound contourite drift, offshore Ireland","authors":"Alice O. Matossian ,&nbsp;Eoghan Daly ,&nbsp;Sheena Fennell ,&nbsp;Nadzeya Shymbaliova ,&nbsp;Thomas Vandorpe ,&nbsp;Martin White ,&nbsp;David Van Rooij","doi":"10.1016/j.dsr.2025.104640","DOIUrl":"10.1016/j.dsr.2025.104640","url":null,"abstract":"<div><div>The Belgica Mound Drift is a contourite drift located in the Porcupine Seabight, offshore Ireland, formed in association with cold-water coral mounds.</div><div>ROV imagery and bathymetry provided a close-up view of the drift seafloor, identifying multiple bedforms, including sinuous, linguoid and washed-out ripples as well as sediment waves. Three moorings equipped with current meters were deployed to better understand the spatial and temporal variations of the present-day hydrodynamic conditions over the drift moats and crest. Several velocity flows, ranging from 20 to 100 cm/s, were deduced from the interpretation of the bedforms and compared with the mooring-recorded flow values and character to evaluate the representativeness of the bedforms as a tool in the assessment of the strength and direction of bottom currents in deep environments. Both the tidally forced flows up to 50 cm/s, and the observed flow directions are consistent with the bedform estimation. While bedforms which require weaker bottom currents are currently formed during every tidal flow, the ripples created under stronger flows may be relic features formed during unrecorded peak flow events. This suggests that the drift and its moats are still being influenced by a strong hydrodynamic regime.</div><div>The spatial distribution of the bedforms suggests that the bottom current flow velocities are extremely variable, partly supported by the measured currents. This is likely related to the local topography which may have a very small spatial scale impact on the bottom flows.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"227 ","pages":"Article 104640"},"PeriodicalIF":2.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790797","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":"Abyssal macrofaunal community structure in the eastern Clarion-Clipperton Fracture zone","authors":"Cheah Hoay Chuar,&nbsp;Samantha Jia Wen Tong,&nbsp;Chee Kong Chim,&nbsp;Helen Pei San Wong,&nbsp;Koh Siang Tan","doi":"10.1016/j.dsr.2025.104637","DOIUrl":"10.1016/j.dsr.2025.104637","url":null,"abstract":"<div><div>The abyssal plains of the Clarion-Clipperton Fracture Zone (CCFZ) contain vast amounts of commercially important polymetallic nodules. As deep-sea nodule mining becomes increasingly likely, understanding the spatial distribution of benthic communities and their relationships with environmental variables is critical for developing effective management practices to conserve biodiversity. This study examined macrofaunal communities within the Ocean Mineral Singapore (OMS) contract area located in the easternmost region of the CCFZ. Data collected from 13 box cores during the Resource Cruise 01 (RC01) in 2020 were compared with those from 12 previously analysed box cores sampled during the Abyssal Baseline Project (AB02) in 2015. Sampling sites were between 20 km and 200 km apart. Macrofaunal diversity from RC01 stations was positively correlated with nodule surface cover and sediment shear strength. Higher taxa and family-level analyses revealed varying patterns of clustering depending on the fauna group. Sediment shear strength contributed at least in part to RC01 macrofaunal community variation. When AB02 data were incorporated, significant differences in sediment shear strength and macrofaunal diversity were observed between northern and southern OMS sites. Community composition also differed significantly among sites, with nematodes and copepods primarily driving these differences. Community variation may be attributed to differences in nodule surface cover, albeit in a small proportion. Our findings suggest that sediment shear strength and surface nodule cover are important in shaping benthic community structure. These environmental variables are also most likely to be permanently altered by nodule mining activities. Future studies should incorporate such factors to ascertain their relationship with CCFZ faunal communities. Overall the observed patterns showed that there are considerable biodiversity differences within the OMS contract area. Further studies at higher taxonomical resolution (genus or species level) are needed to determine taxa-specific ecological responses, species connectivity, and dispersal abilities.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"227 ","pages":"Article 104637"},"PeriodicalIF":2.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684997","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 role of geological feature shape on the abundance and diversity of deep sea corals","authors":"Brian R.C. Kennedy ,&nbsp;Randi D. Rotjan","doi":"10.1016/j.dsr.2025.104625","DOIUrl":"10.1016/j.dsr.2025.104625","url":null,"abstract":"<div><div>The role of geological gross geomorphology (shape) as an abiotic control governing the abundance and diversity of deep-sea corals has not been previously considered, but has the potential to provide easily-accessible and transformative insight into deep water coral community dynamics. This study aims to investigate the influence of geological shape (e.g. atolls, islands, banks, guyots, conical, ridges) on deep-sea coral genera and habitats in the Pacific Ocean to determine whether feature shape is an important predictor of deep water biological communities. Multivariate analyses were used to test whether the gross geomorphology (shape) of islands and seamounts influences the abundance and diversity of deep water coral genera. Geological features across the entire Pacific basin were categorized using a standard classification scheme to determine their shape category. Across the 50 most abundant deep water coral genera in the data set, all 50 showed a statically significant preference for at least one geomorphology. Additionally, the abundance of the different feature shapes was not evenly distributed across the Pacific basin. Gross geomorphology influences the abundance and diversity of deep-sea corals across the central Pacific, which provides insight into deep water coral community structure and resulting conservation implications.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"227 ","pages":"Article 104625"},"PeriodicalIF":2.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618542","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":"Tracking blind journey in the deep-sea: origin and evolutionary history of the Typhlotanaidae (Crustacea: Tanaidacea)","authors":"Marta Gellert ,&nbsp;Magdalena Błażewicz ,&nbsp;Tomasz Mamos ,&nbsp;Graham J. Bird","doi":"10.1016/j.dsr.2025.104608","DOIUrl":"10.1016/j.dsr.2025.104608","url":null,"abstract":"<div><div>The Typhlotanaidae are regarded as one of the most diverse families within the suborder Tanaidomorpha; their actual diversity and evolutionary history remain poorly understood. To elucidate the evolutionary history within this group, we analysed three molecular markers, i.e., the mitochondrial cytochrome oxidase I (COI), the nuclear 18S rRNA, and histone 3 (H3) gene. This represents the first phylogenetic investigation of the family Typhlotanaidae and, more broadly, the first molecular attempt to reconstruct evolutionary relationships within the suborder Tanaidomorpha. The phylogenetic reconstruction revealed the polyphyletic nature of the Typhlotanaidae, leading to elevation of two genera to family rank. Furthermore, by applying an integrative approach that combined molecular and morphological evidence, three new typhlotanaid subfamilies were defined, one subfamily was re-established, and two new genera were erected. As a result of this study, the number of species included in the Typhlotanaidae has considerably reduced, with the family now comprising 119 valid species.</div></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"227 ","pages":"Article 104608"},"PeriodicalIF":2.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790798","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}