Paper Push: 2026-07-08
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每日论文推送：BGC-Argo、海色/海洋光学、海洋热浪与碳泵Daily Paper Push: BGC-Argo, ocean colour/ocean optics, marine heatwaves and carbon pump
本期由 GitHub Actions 自动检索生成：Nature/Science 系列优先，其次是用户指定重点期刊，再补充重点关注团队的新论文，最后纳入其他相关期刊；历史去重后保留 7 篇，不超过每日 50 篇上限。 This issue was generated automatically by GitHub Actions: Nature and Science series first, then the user-defined priority journals, then new papers from the focused team, followed by other relevant journals as topical supplements. After deduplication, 7 papers remain, below the daily limit of 50.
Download Word summary
无 mechanism sketch 图。今天的意大利语卡片： No mechanism sketch figure today. Daily Italian card:
每日一句意大利语Daily Italian
Vien dietro a me, e lascia dir le genti.
Dante, Commedia, Purgatorio V, 13; Italian original from Kalliope
维吉尔说：跟着我，让别人去说吧。它常被当作不被议论牵着走的格言。
Virgil says: follow me, and let people talk. It is often read as counsel against being ruled by gossip.
趋势总结Trend Summary
本期重点关注 BGC-Argo、海色遥感/海洋光学、海洋热浪、浮游植物垂向结构和碳泵过程。筛选逻辑不再只限于重点期刊；当高影响力期刊当天新增较少时，会额外检索重点关注团队作者的新论文，并用海洋、海色/光学和碳循环关键词过滤，再从其他相关期刊补充候选论文。
This issue focuses on BGC-Argo, ocean-colour remote sensing, ocean optics, marine heatwaves, vertical phytoplankton structure and carbon-pump processes. The selection is no longer limited to priority journals; when few high-impact papers are newly available, the workflow also checks focused-team authors and filters those papers with ocean, ocean-colour/optics, and carbon-cycle keywords before adding other relevant journals as supplements.
重点期刊：按影响力和相关性排序Key journals: ordered by impact and relevance
1. Navigating turbid waters: Effects of turbulence and suspended particulate matter on ingestion and defecation of the calanoid copepod Acartia tonsa
作者Authors: Stef Gerard; Dick van Oevelen; Cas van der Kaaden; Karline Soetaert
发表月份Publication month: 2026-07 2026-07
Limnology and Oceanography · DOI: 10.1002/lno.70450
关键词Tags: ocean biogeochemistry ocean biogeochemistry
摘要：湍流和悬浮颗粒物 (SPM) 对桡足类摄食和排泄的相互作用影响仍知之甚少。我们通过实验研究了湍流（0、10 -3 和 10 0 cm 2 s -3 ）和 SPM（0 和 150 mg L -1 ；硅藻土）单独和组合如何影响海洋桡足类 Acaria tonsa 的摄入、粪便颗粒产生、肠道通过时间、同化效率和粪便颗粒特征。桡足类被喂食硅藻 Thalassiosira weissflogii（也称为 Conticribra weissflogii）或甲藻 Akashiwo sanguinea，分别诱导悬浮和伏击进食模式。在两种喂食模式下，SPM 和高湍流分别减少了高达 50% 和 25% 的摄入量。低湍流增强了伏击进食（高达 25%），但对悬浮进食没有影响。 湍流和 SPM 对摄取率的综合影响是累积的，联合处理下的反应等于单一压力条件下观察到的影响总和。粪便颗粒的产生（#pellets）通常随着摄入量的增加而增加；然而，在 SPM 条件下，尽管猎物摄入量减少，但它仍然升高，表明摄入了非营养性 SPM 颗粒，导致粪便颗粒碳密度大幅降低，并产生稍大的颗粒。喂养模式特异性差异很明显：在伏击喂养期间，粪便颗粒碳密度增加，SPM 摄入量随着猎物浓度的增加而减少，而在悬浮喂养期间，两者随着猎物浓度的增加而保持不变。这些结果表明 A. tonsa 摄食策略调节 SPM 的摄入并介导桡足类对物理强迫的反应，对不断变化的环境条件下的营养转移和颗粒通量具有影响。
Abstract: The interactive effects of turbulence and suspended particulate matter (SPM) on copepod feeding and egestion remain poorly understood. We experimentally examined how turbulence (0, 10 −3 , and 10 0 cm 2 s −3 ) and SPM (0 and 150 mg L −1 ; Diatomaceous Earth), alone and combined, affect ingestion, fecal pellet production, gut passage time, assimilation efficiency, and fecal pellet characteristics in the marine copepod Acartia tonsa . Copepods were fed either the diatom Thalassiosira weissflogii (also known as Conticribra weissflogii ) or the dinoflagellate Akashiwo sanguinea , inducing suspension‐ and ambush feeding modes, respectively. In both feeding modes, SPM and high turbulence reduced ingestion by up to 50% and 25%, respectively. Low turbulence enhanced ambush feeding (up to 25%) but had no effect on suspension feeding. Combined effects of turbulence and SPM on ingestion rates were cumulative, with responses under combined treatments equaling the sum of effects observed under single‐stressor conditions. Fecal pellet production (#pellets) generally scaled with ingestion; however, under SPM conditions it remained elevated despite reduced prey intake, indicating ingestion of non‐nutritive SPM particles, resulting in a substantial reduction in fecal pellet carbon density and the production of slightly larger pellets. Feeding mode‐specific differences were evident: during ambush feeding, fecal pellet carbon density increased, and SPM ingestion decreased with increasing prey concentration, whereas both remained constant with increasing prey concentration during suspension feeding. These results demonstrate that A. tonsa feeding strategy modulates the ingestion of SPM and mediates copepod responses to physical forcing, with implications for trophic transfer and particle flux under changing environmental conditions.
2. Modelling the impacts of marine heatwaves on plankton in the Salish Sea
作者Authors: Karyn D. Suchy; Susan E. Allen; Akash R. Sastri; Kelly V. Young
发表月份Publication month: 2026-07 2026-07
Biogeosciences · DOI: 10.5194/bg-23-4667-2026
关键词Tags: marine heatwaves marine heatwaves
摘要：海洋热浪是由大气强迫和海洋过程共同引起的长期异常温暖海洋温度的离散事件。东北太平洋海洋热浪 (NEP-MHW) 于 2014 年首次在萨利什海被发现，并一直持续到 2017 年。在这里，我们使用三维耦合生物物理模型 SalishSeaCast 来研究 NEP-MHW 对萨利什海的物理和浮游生物的影响。十六年（2007-2022）的模型结果被用来追踪 NEP-MHW 进入萨利希海关键区域的轨迹。将模型结果与同期收集的观察数据进行比较。我们通过在较长时间尺度上运行的其他大规模气候指数来解决 NEP-MHW 的具体影响与变暖的影响。 模型结果表明，NEP-MHW 的最强物理特征在胡安德富卡地区很明显，其中变暖有利于硅藻和纳米鞭毛虫的生长。相比之下，NEP-MHW 的直接变暖对乔治亚海峡 (SoG) 的影响较小，但该地区的暖水异常持续存在，直到 2022 年我们的研究期结束。SoG 上层的温度和硝酸盐都与北太平洋环流振荡密切相关，并且在这段漫长的变暖期间，硅藻生物量减少。我们的研究结果强调，需要认识到与不同大规模气候指数相关的多种类型的海洋热浪可以同时发生，即使是在萨利希海这样的单一水体中，每种热浪对当地食物网都有不同的影响。
Abstract: Marine heatwaves are discrete events of prolonged anomalously warm ocean temperatures caused by a combination of atmospheric forcing and ocean processes. The Northeast Pacific Marine Heatwave (NEP-MHW) was first detected in the Salish Sea in 2014 and persisted in the region until 2017. Here, we used a three-dimensional coupled biophysical model, SalishSeaCast, to examine the impacts of the NEP-MHW on the physics and the plankton in the Salish Sea. Sixteen years (2007–2022) of model results were used to follow the trajectory of the NEP-MHW into key regions of the Salish Sea. Model results were compared to observation data collected over the same period. We resolved the specific impacts of the NEP-MHW versus the impacts of warming via other large-scale climate indices operating on longer time scales. Model results showed that the strongest physical signatures of the NEP-MHW were evident in the Juan de Fuca region wherein warming was favourable for the growth of both diatoms and nanoflagellates. In comparison, the direct warming from the NEP-MHW impacted the Strait of Georgia (SoG) to a lesser degree but warm water anomalies persisted in this region until the end of our study period in 2022. Both temperature and nitrate in the upper layer of the SoG were strongly linked to the North Pacific Gyre Oscillation and diatom biomass decreased during this prolonged warming period. Our results highlight the need to recognize that multiple types of marine heatwaves associated with different large-scale climate indices can occur simultaneously, even within a single waterbody such as the Salish Sea, each with distinct impacts on the local food web.
3. First shotgun metagenomic survey of depth-stratified microbial communities in the oligotrophic Jordanian Gulf of Aqaba (Red Sea) reveals depth-structured communities and nitrifier enrichment
作者Authors: Sara Hamdan; Rami AlOuran; Malek Zihlif; Nancy Hakooz; Mamoon Al-Rshaidat
发表月份Publication month: 2026-07 2026-07
Frontiers in Marine Science · DOI: 10.3389/fmars.2026.1872586
关键词Tags: phytoplankton; microbial carbon; vertical structure phytoplankton; microbial carbon; vertical structure
摘要：简介 贫营养的亚喀巴湾的特点是强烈的垂直水文梯度，但约旦地区微生物群落结构的深度分辨宏基因组信息仍然有限。这项研究检查了整个水体的微生物群落组成。方法在2022年夏季OceanXplorer探险期间，在约旦亚喀巴湾的七个站点从表层、深层叶绿素最大值（DCM）和超过800 m的深水层采集了海水样本。高分辨率电导率、温度和深度 (CTD) 剖面用于表征物理化学梯度。对微生物 DNA 进行鸟枪法宏基因组测序，以评估微生物组合的群落组成、多样性指标和深度相关差异。 结果 CTD 剖面揭示了夏季强烈的分层和整个水体明显的物理化学梯度。 GC 含量从表层样品中的 39. 4% 增加到深水样品中的 46. 1%，表明分类学随着深度的变化而发生重大变化。微生物群落组成由深度强烈结构化，这解释了 81. 3% 的 Bray-Curtis 差异变异 (PERMANOVA: F = 36. 89, p = 0. 0001)，而站级变异很小。 Alpha 多样性也随着深度的增加而增加，观察到的丰富度从表面到深水增加了 1. 35 倍。表面群落以原绿球菌_A 和 Pelagibacter 为主，而 DCM 则含有包含表面相关光养类群和深水硝化菌相关谱系的过渡组合。 深水区富含氨氧化古菌，包括 Nitrosopelagicus，其在深层样本中平均为 4. 86%，在 DCM 中为 1. 48%，但在主要的表层属中不存在。讨论 这些发现确定与深度相关的水文分层是约旦亚喀巴湾微生物分区的主要驱动因素。从光养主导的表面群落到富含硝化菌的深水群落的转变表明微生物功能潜力的强烈垂直划分。这项研究为贫营养的约旦亚喀巴湾微生物群落提供了第一个水柱规模的宏基因组数据集，并为了解它们对区域生物地球化学循环的贡献建立了基线。
Abstract: Introduction The oligotrophic Gulf of Aqaba is characterized by strong vertical hydrographic gradients, yet depth-resolved metagenomic information on microbial community structure in the Jordanian sector remains limited. This study examined the microbial community composition across the water column. Methods During the summer 2022 OceanXplorer expedition, seawater samples were collected at seven stations in the Jordanian Gulf of Aqaba from surface, deep chlorophyll maximum (DCM) and deep-water layers exceeding 800 m. High-resolution conductivity, temperature, and depth (CTD) profiles were used to characterize physicochemical gradients. Microbial DNA was subjected to shotgun metagenomic sequencing to assess community composition, diversity metrics, and depth-associated differences in microbial assemblages. Results CTD profiles revealed strong summer stratification and pronounced physicochemical gradients across the water column. GC content increased from 39.4% in surface samples to 46.1% in deep-water samples, indicating major taxonomic turnover with depth. Microbial community composition was strongly structured by depth, which explained 81.3% of Bray–Curtis dissimilarity variation (PERMANOVA: F = 36.89, p = 0.0001), whereas station-level variation was minimal. Alpha diversity also increased with depth, with observed richness rising 1.35-fold from surface to deep waters. Surface communities were dominated by Prochlorococcus_A and Pelagibacter, while the DCM hosted transitional assemblages containing of both surface-associated phototrophic taxa and deeper-water nitrifier-associated lineages. Deep waters were enriched in ammonia-oxidizing archaea, including Nitrosopelagicus, which averaged 4.86% in deep samples and 1.48% in the DCM, but was absent from the dominant surface genera. Discussion These findings identify depth-associated hydrographic stratification as the primary driver of microbial zonation in the Jordanian Gulf of Aqaba. The transition from phototroph-dominated surface communities to nitrifier-enriched deep-water assemblages suggests strong vertical partitioning of microbial functional potential. This study provides the first water-column-scale metagenomic dataset for microbial communities in the oligotrophic Jordanian Gulf of Aqaba and establishes a baseline for understanding their contribution to regional biogeochemical cycling.
重点关注团队Focused team
4. Bidirectional-driven high-resolution processing technology for onshore distributed acoustic sensing surface–borehole joint acquisition seismic data
作者Authors: Xiangwen Li; Shujun Xia; Yuanzhong Chen; Yu Wang; Guanqing Zhang; Jianing Li
发表月份Publication month: 2026-07 2026-07
Journal of Seismic Exploration · DOI: 10.36922/jse026110047
关键词Tags: backscattering; bio-optics; vertical structure backscattering; bio-optics; vertical structure
摘要：复杂断陷盆地低级断裂和砂体的准确表征仍然是隐蔽油气藏勘探的核心挑战。常规地震技术受限于分辨率瓶颈，无法满足勘探需求。光纤分布式声学传感（DAS）技术的进步为高密度地表-钻孔联合采集提供了新途径。本研究提出了一种双向驱动的高分辨率处理工作流程，针对在断陷盆地的复杂断层系统中获取的支持 DAS 的地面-钻孔联合地震数据进行了优化。 该技术建立了“八个统一”地面处理框架，定义了“四个确定”核心处理步骤，构建了“三同步联合”地面-井眼联合双向驱动处理流程，实现了井眼和地面地震数据的交互约束和迭代优化。该工作流程应用于中国东部新生代裂谷盆地，同时提供三维垂直地震剖面（3D VSP）和地面地震成像数据。 3D VSP 成像实现了 45 Hz 的主频率和 3–85 Hz 的带宽，能够识别距井 4 km 内断距≥5 m 的低阶断层。地面地震成像产生的主频率为 35 Hz，带宽为 4–68Hz，支持对工作区域内 10–20 m 断层的连续跟踪。 现场应用表明，该技术显着提高了复杂断层系统表征精度，建立了适合裂谷盆地的高分辨率地表-井下联合勘探模型，为复杂构造地区油气勘探提供了可复制的技术模板。
Abstract: Accurate characterization of low-order faults and sand bodies in complex faulted basins remains a core challenge in the exploration of subtle oil and gas reservoirs. Conventional seismic techniques are constrained by resolution bottlenecks and cannot meet exploration demands. The advancement of optical fiber distributed acoustic sensing (DAS) technology provides a new avenue for high-density surface–borehole joint acquisition. This study presents a bidirectional-driven high-resolution processing workflow optimized for DAS-enabled surface–borehole joint seismic data acquired in the complex fault systems of faulted basins. The proposed technology establishes an “Eight Unifications” surface-processing framework, defines the “Four Determinacies” core processing steps, and builds a “Three Synchronous Joint” surface–borehole joint bidirectional-driven processing flow to enable interactive constraints and iterative optimization of borehole and surface seismic data. Applied to the Cenozoic rift basin in eastern China, this workflow simultaneously delivered three-dimensional vertical seismic profile (3D VSP) and surface seismic imaging data. The 3D VSP imaging achieved a dominant frequency of 45 Hz and a bandwidth of 3–85 Hz, enabling identification of low‑order faults with throws ≥5 m within 4 km of the well. Surface seismic imaging yielded a dominant frequency of 35 Hz and a bandwidth of 4–68Hz, supporting continuous tracking of a 10–20 m throw fault in the work area. Field applications demonstrated that this technology significantly improves the precision of complex fault system characterization, establishes a high‑resolution surface–borehole joint exploration model tailored for rift basins, and provides a replicable technical template for oil and gas exploration in structurally complex areas.
5. UV-Induced Degradation of Microcystin-LR Mediated by a Ratiometric Fluorescence Probe for the Visual Detection of Microcystin-LR
作者Authors: Zhaomin Wang; Chen Wang; Huiyan Chuan; Bingyan Li; Yue Zhang; Ping Xie; Zhe Chen; Yong Liu
发表月份Publication month: 2026-07 2026-07
Environmental Science & Technology · DOI: 10.1021/acs.est.6c07756
关键词Tags: ocean biogeochemistry ocean biogeochemistry
摘要：Crossref 未提供该 DOI 的摘要。
Abstract: Crossref did not provide an abstract for this DOI.
6. OCRT-Net: A neural network embedding ocean color radiative transfer theory for retrieving optical water constituents
作者Authors: Zhigang Cao; Zhongping Lee; Ming Shen; Fenzhen Su; Hongtao Duan
发表月份Publication month: 2026-07 2026-07
Information Geography · DOI: 10.1016/j.infgeo.2026.100054
关键词Tags: ocean colour; bio-optics ocean colour; bio-optics
摘要：Crossref 未提供该 DOI 的摘要。
Abstract: Crossref did not provide an abstract for this DOI.
其他相关期刊：按主题相关性补充Other relevant journals: topical supplements
7. Decadal Chlorophyll-a Dynamics and Trophic Status of Mahakam Delta Coastal Waters (2014–2024)
作者Authors: Romansah Wumu; Suparjo Suparjo; Karno Karno; Nia Kurniadin
发表月份Publication month: 2026-06 2026-06
Buletin Poltanesa · DOI: 10.51967/tanesa.v27i1.3804
关键词Tags: phytoplankton; ocean colour phytoplankton; ocean colour
摘要：研究主要分析变化趋势、事件响应、驱动机制或方法表现，并把观测结果与生态和生物地球化学过程联系起来。 核心结果或实现为该主题提供了新的观测约束、方法基准或过程解释。
Abstract: Chlorophyll-a (Chl-a) is a key proxy for assessing phytoplankton biomass and trophic status of coastal waters. This study analyzes spatiotemporal Chl-a dynamics across three Areas of Interest (AOIs) in the Mahakam Delta coastal waters, East Kalimantan, Indonesia: Delta Mahakam (DM), Muara Badak-Marangkayu (MB), and Muara Jawa-Samboja (MJ). Monthly Chl-a data from the Copernicus Marine Ocean Color V6 (CMEMS) product were processed through Google Earth Engine from 2014 to 2024. DM recorded the highest mean Chl-a (5.30 ± 1.02 mg/m³), followed by MJ (3.01 ± 0.83 mg/m³) and MB (1.76 ± 0.60 mg/m³). Under OECD classification, DM was dominantly mesotrophic, MB oligotrophic, and MJ showed the only statistically significant increasing trend (R² = 0.518, p = 0.013). Chl-a peaked during the rainy season (October–March), driven by monsoonal riverine nutrient pulses. HYCOM surface currents confirmed that monsoon reversals modulate coastal phytoplankton distribution. These findings provide baseline data for coastal ecosystem monitoring and marine spatial planning in East Kalimantan.
