Estuarine Coastal and Shelf Science最新文献_第7页

Climatic forcing modulates non-stationary environmental synchrony in shellfish production regions 气候强迫调节贝类产区的非平稳环境同步

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-28 DOI: 10.1016/j.ecss.2025.109605

Carlos Lara , Richard Muñoz , Sebastián I. Vásquez , Felipe I. Torres , Amalia M.S. Detoni , Bernardo R. Broitman , Bernard Cazelles

Coupled fluctuations between ecological and environmental processes — i.e., synchrony — have been documented in marine ecosystems across multiple spatial and temporal scales. To investigate multiscale synchrony, we applied Wavelet Coherence (WC) and Partial Wavelet Coherence (PWC) analyses to disentangle nonstationary associations between local and regional environmental variables that are critical for shellfish aquaculture along the southeastern Pacific. Specifically, we examined and controlled the effects of local associations between sea surface temperature (

S S T

) and shellfish food supply, represented by normalized fluorescence line height (

n F L H

), in relation to the regional El Niño–Southern Oscillation (

E N S O

). Using MODIS-Aqua satellite time series (2003–2022) and the Multivariate ENSO Index (

M E I

), we assessed temporal changes in the coupling between

S S T

and

n F L H

in two bivalve aquaculture regions: Tongoy Bay (north-central Chile) and northern Chiloé (southern Chile). Our analyses revealed that

S S T

exhibited a stationary annual cycle explaining over 95% of total variance, while

n F L H

showed a dominant annual mode accounting for more than 60% of variance. However, the second mode of

n F L H

in both Tongoy Bay and northern Chiloé reflected the influence of local drivers — such as freshwater discharge events — that were not synchronized with the dominant pattern. PWC analyses identified significant intra- and interannual synchrony between

n F L H

and

E N S O

within the 1.5–2.5 yr and 3–5 yr bands, after removing the influence of

S S T

. These results demonstrate that large-scale climatic forcing modulates local environmental synchrony through differential regional coupling strengths. Consequently, the predictability of environmental conditions relevant to shellfish aquaculture in both regions appears to be strongly constrained by

E N S O

-driven variability operating across multiple temporal scales.

在海洋生态系统中，生态过程和环境过程之间的耦合波动——即同步性——已在多个空间和时间尺度上得到记录。为了研究多尺度同步，我们应用小波相干性（WC）和偏小波相干性（PWC）分析了局部和区域环境变量之间的非平稳关联，这些变量对东南太平洋贝类养殖至关重要。具体来说，我们研究并控制了海水表面温度（SST）和贝类食物供应之间的局部关联的影响，以标准化荧光线高度（nFLH）表示，与区域El Niño-Southern涛动（ENSO）有关。利用MODIS-Aqua卫星时间序列（2003-2022）和多元ENSO指数（MEI），我们评估了两个双壳类养殖区：智利中北部的Tongoy湾和智利南部的chilo北部的海温与nFLH耦合的时间变化。分析表明，海表温度表现为平稳的年周期，占总方差的95%以上，而nFLH表现为主导的年模式，占总方差的60%以上。然而，Tongoy湾和chilo北部的nFLH的第二种模式反映了当地驱动因素（如淡水排放事件）的影响，这些驱动因素与主导模式不同步。普华永道分析发现，在去除海温的影响后，nFLH和ENSO在1.5-2.5年和3-5年的波段内具有显著的年际和年际同步。这些结果表明，大尺度气候强迫通过不同的区域耦合强度调节局部环境同步。因此，这两个地区与贝类养殖相关的环境条件的可预测性似乎受到enso驱动的跨多个时间尺度变化的强烈限制。

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引用次数: 0

Water quality impacts during Hurricane Irene (2011) in a large coastal-plain estuary 飓风艾琳（2011）对沿海平原河口水质的影响

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-27 DOI: 10.1016/j.ecss.2025.109632

P. St-Laurent

Embayments of North America’s east coast are positioned along the trajectory of Atlantic tropical cyclones (TCs) whose frequency and/or intensity are projected to increase over the century. Substantial water quality impacts of TCs have been documented over the years in some of those embayments, but large coastal plain estuaries remain an observational challenge that often confines water quality studies to sub-regions or to tributaries. The present study provides a ‘system-wide’ analysis of impacts on water properties during hurricane Irene (2011), reflecting the aggregate response of a large estuary (Chesapeake Bay) in terms of air/sea exchanges of CO

_{2}

, O

_{2}

, and other metrics. The study focuses on the days preceding/following the event and leverages an ensemble of atmospheric simulations of Irene (to quantify the sensitivity of its impacts on water properties to variations in the TC’s characteristics) and a 1985–2023 hindcast (to put Irene in perspective). The analysis indicates that the CO

_{2}

outgassing during Irene was unprecedented over 1985–2023, and that TCs regularly cause CO

_{2}

outgassing events of magnitude

\sim 25 %

weaker than that of Irene (return period of 2–5 years). Based on the sensitivity analysis, most metrics worsen in proportion to an hypothetical intensification of Irene, but CO

_{2}

outgassing exhibits a slightly superlinear response. These results emphasize the need to account for the contribution of large stochastic events in estuaries in order to derive global carbon budgets representative of reality.

北美东海岸的入口位于大西洋热带气旋（tc）的轨迹上，预计这些热带气旋的频率和/或强度在本世纪内会增加。多年来，在其中一些河口已经记录了tc对水质的重大影响，但大型沿海平原河口仍然是一个观测挑战，往往将水质研究局限于分区域或支流。本研究提供了飓风艾琳（2011）期间对水特性影响的“全系统”分析，反映了一个大河口（切萨皮克湾）在空气/海洋交换CO2、O2和其他指标方面的总体反应。该研究侧重于飓风之前/之后的几天，并利用了艾琳的大气模拟集合（量化其对水特性的影响对TC特征变化的敏感性）和1985-2023年的后预测（对艾琳进行正确的预测）。分析表明，1985-2023年艾琳期间的二氧化碳放气是前所未有的，并且tc经常引起的二氧化碳放气事件比艾琳（2-5年的重现期）弱25%。根据敏感性分析，大多数指标与假设的艾琳强度成比例恶化，但二氧化碳放气表现出轻微的超线性响应。这些结果强调需要考虑河口大型随机事件的贡献，以便得出代表现实的全球碳预算。

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引用次数: 0

Comparisons between estuary-associated ichthyofaunas in ecoregions around the Pacific Ocean 太平洋周边生态区内与河口相关的鱼类群的比较

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-26 DOI: 10.1016/j.ecss.2025.109629

Alan K. Whitfield , Trevor D. Harrison , James R. Tweedley

This review examines possible estuarine fish colonisation processes of the Pacific Ocean that started in the Early Jurassic and gained momentum with the break-up of Pangea. Initial colonisation of the newly-created estuaries by fish is likely to have accelerated during the Devonian, with tropical marine families from the Neotethys Sea region using epicontinental seaways between Asia, Australia, India, Arabia, Europe and the Americas to colonise estuaries on these drifting land masses. Analyses of the presence/absence of fish families and species from selected ecoregions around the Pacific Ocean rim showed that estuary-associated fish families on the eastern and western side of the Pacific Ocean separated out at a Bray-Curtis similarity of 41 % but were only ∼5 % similar at the species level. In terms of past and present geodispersal of fish taxa, tropical species may have used ‘island hopping’ to cover the >19 000 km gap between the tropical western and eastern shores of the Pacific. However, most tropical taxa in the eastern Pacific appear to have originated from the Caribbean area of the Western Atlantic and not from the central Western Pacific fish species ‘hotspot’. In contrast, ichthyofaunal colonisation of Western Pacific regions to the north and south of the ‘hotspot’ was facilitated by ocean currents and the more limited distances between estuaries and coastal ecoregions in this part of the Pacific. The cold temperate waters of the Northern and Southern Pacific Ocean would have acted as a barrier to tropical species attempting to use these routes to cross the Pacific Ocean basin. The prevalence of temperate diadromous fish species in both the temperate northern (e.g. Russia and Alaska) and southern (e.g. New Zealand and Patagonia) estuaries is probably a function of local evolutionary trends that favoured such taxa in those particular regions.

这篇综述研究了太平洋可能的河口鱼类定殖过程，该过程始于早侏罗世，并随着盘古大陆的分裂而获得动力。在泥盆纪期间，鱼类对新形成的河口的最初殖民可能加速了，来自新特提斯海地区的热带海洋家族利用亚洲、澳大利亚、印度、阿拉伯、欧洲和美洲之间的大陆外航道，在这些漂流的陆地块上殖民河口。对环太平洋沿岸选定生态区内鱼类科和物种的存在/缺失分析表明，太平洋东侧和西侧的河口相关鱼类科在布雷-柯蒂斯相似性为41%时分离，但在物种水平上相似度仅为~ 5%。就鱼类分类群过去和现在的地理传播而言，热带物种可能利用“跳岛”来覆盖太平洋热带东西海岸之间19000公里的鸿沟。然而，东太平洋的大多数热带分类群似乎起源于西大西洋的加勒比地区，而不是来自西太平洋中部的鱼类物种“热点”。相比之下，“热点”北部和南部的西太平洋地区的鱼类种群是由洋流和太平洋这部分河口和沿海生态区域之间更有限的距离促进的。北太平洋和南太平洋寒冷的温带水域可能会成为热带物种试图通过这些路线穿越太平洋盆地的障碍。温带双产卵鱼类在温带北部（如俄罗斯和阿拉斯加）和南部（如新西兰和巴塔哥尼亚）河口的流行可能是当地进化趋势在这些特定地区有利于这些分类群的功能。

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引用次数: 0

The combined effects of salinity and inundation on bryophyte coverage and species distribution, a tidal mesocosm experiment 盐度和淹没对苔藓植物盖度和物种分布的联合影响——潮汐中生态试验

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-25 DOI: 10.1016/j.ecss.2025.109630

Roy Münstermann , Katharina Wilfert , Dirk De Beer , Stijn Baeten , Tom Maris , Jonas Schoelynck

Freshwater tidal marshes are dynamic and productive ecosystems that provide habitats to a variety of plant communities. Bryophytes are one of these communities that can play an important role in colonization as pioneers in newly developing tidal nature. This study aimed to discover the effect of inundation, salinity, and soil texture on bryophyte diversity and abundance in a controlled mesocosm setting. In contrast to our hypothesis, we found that bryophyte coverage and diversity were highest under saline circumstances with a low inundation frequency. Additionally, we found that silty loam soils had increased bryophyte coverage compared to silty loam soils mixed with gravel. These results indicate that multiple environmental factors can be important drivers of bryophyte community characteristics in tidal ecosystems. Lastly, this study successfully estimated vegetation cover using machine learning based image classification, proving the usefulness of this technique for mesoscale setups.

淡水潮汐沼泽是充满活力和生产力的生态系统，为各种植物群落提供栖息地。苔藓植物是这些群落中的一员，在新发展的潮汐自然中可以作为拓荒者在定植中发挥重要作用。本研究旨在探讨在受控的中生态环境下，淹没、盐度和土壤质地对苔藓植物多样性和丰度的影响。与我们的假设相反，我们发现苔藓植物盖度和多样性在低淹没频率的盐水环境下最高。此外，我们发现粉质壤土的苔藓盖度比粉质壤土混合砾石的苔藓盖度更高。这些结果表明，多种环境因素可能是潮汐生态系统苔藓植物群落特征的重要驱动因素。最后，本研究使用基于机器学习的图像分类成功估计了植被覆盖，证明了该技术对中尺度设置的有用性。

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引用次数: 0

Effects of coastal erosion control interventions on Ocypode quadrata (Fabricius, 1787) populations on sandy beaches in southeastern Brazil 海岸侵蚀控制措施对巴西东南部沙滩上方形足鼠种群的影响

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-22 DOI: 10.1016/j.ecss.2025.109627

Adriane Baudson do Nascimento , Phillipe Mota Machado , Eduardo Manuel Rosa Bulhões , Leonardo Lopes Costa , Lucia Fanini , Ilana Rosental Zalmon

Engineering actions on beaches are a frequent approach to mitigate coastal erosion and flooding and to enable recreational use. These include “hard” approaches (e.g., rock revetments) and “soft” ones (e.g., beach nourishment). One species potentially affected by these interventions is the ghost crab Ocypode quadrata, used as an indicator of beach use impacts in the Americas. This study aimed to evaluate the effect of erosion control interventions on O. quadrata populations, proposing this species as a potential indicator for impact assessment and monitoring. The hypothesis is that coastal interventions negatively affect the species, reducing its abundance and size due to changes in sediment characteristics. Sampling was conducted on beaches in southern Espírito Santo, Brazil, from 2022 to 2024. A total of 10 sampling points were selected to ensure variability in beach features, urbanization, and coastal interventions, such as rock revetments and beach nourishment, allowing the identification of patterns and possible causal relationships involving ghost crab populations. Urbanization level was assessed using the Human Modification Metric (HMc) as a proxy, and erosion trends were calculated based on shoreline displacement. As response variables, burrow counts and diameter measurements were used as indicators of population abundance and body size. O. quadrata populations were negatively affected by both urbanization and erosion control structures. The nourishment project also reduced population abundance, but did not affect burrow diameter. The results highlight the species vulnerability to coastal interventions and urbanization, reinforcing its role as an indicator of disturbance and management on sandy beaches.

在海滩上采取工程行动是减轻海岸侵蚀和洪水的常用方法，并使其成为娱乐用途。这些方法包括“硬”方法（例如，岩石护岸）和“软”方法（例如，海滩营养）。这些干预措施可能影响的一个物种是鬼蟹，它被用作美洲海滩使用影响的指标。本研究旨在评价水土流失防治措施对方尺草种群的影响，提出方尺草作为影响评估和监测的潜在指标。假设是，海岸干预对该物种产生了负面影响，由于沉积物特征的变化，减少了其丰度和大小。从2022年到2024年，在巴西南部Espírito Santo的海滩上进行了采样。总共选择了10个采样点，以确保海滩特征、城市化和海岸干预（如岩石护岸和海滩营养）的可变性，从而确定鬼蟹种群的模式和可能的因果关系。以人类变化度量（HMc）为指标评估城市化水平，并基于岸线位移计算侵蚀趋势。以洞穴数量和直径测量作为种群丰度和体型的指标作为响应变量。城市化和水土流失控制结构均对方木种群产生负面影响。营养工程也降低了种群的丰度，但不影响洞穴直径。研究结果强调了物种对海岸干预和城市化的脆弱性，加强了其作为沙滩干扰和管理指标的作用。

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引用次数: 0

Eulerian–Lagrangian simulation of wave-induced microplastic dispersion in nearshore zones: Processes and implications 欧拉-拉格朗日模拟近岸区波浪引起的微塑性色散：过程和意义

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-21 DOI: 10.1016/j.ecss.2025.109626

Abbasali Rahmani , Alessandro Stocchino

Microplastics are a pervasive marine pollutant, threatening coastal ecosystems and biodiversity. Understanding nearshore transport and dispersion is crucial for predicting microplastics’ fate and mitigating impacts. This study employs an Eulerian–Lagrangian model to simulate spherical microplastics, accounting for inertia and buoyancy, under regular and irregular waves in the nearshore region. Using realistic size–density distributions, the simulated particles range from non-buoyant to buoyant and from weakly to highly inertial. The shear layer, formed by Stokes drift and undertow, drives buoyant microplastics shoreward, controlling non-buoyant trajectories. The breaking region acts as a natural barrier, with few low-density, inertial particles passing through and potentially settling above the swash zone, while non-passing particles accumulate in the shoaling zone. Particle–wave characteristics are linked through dimensionless parameters, and we propose applicable dimensionless diffusive coefficients of

K_{h}^{(1)} T / L_{0}^{2} \approx O (1 0^{- 4})

and

K_{v}^{(1)} T / L_{0}^{2} \approx O (1 0^{- 5})

. Dispersion regimes transit from initial ballistic to subdiffusive within 10 wave periods. The subsequent superdiffusive regime is governed primarily by wave steepness and weakly by depth, particle density, and size. However, the absence of a sustained diffusive regime indicates diffusion coefficients may misestimate nearshore microplastic concentrations.

微塑料是一种普遍存在的海洋污染物，威胁着沿海生态系统和生物多样性。了解近岸运输和扩散对于预测微塑料的命运和减轻影响至关重要。本研究采用欧拉-拉格朗日模型模拟了近岸地区规则波和不规则波作用下的球形微塑料，考虑了惯性和浮力。使用真实的尺寸-密度分布，模拟的颗粒范围从无浮力到浮力，从弱惯性到高惯性。由斯托克斯漂流和底流形成的剪切层驱动浮力微塑料向岸边移动，控制非浮力轨迹。破碎区是一个天然屏障，很少有低密度的惯性粒子通过，并可能在冲刷带上方沉降，而未通过的粒子则聚集在浅滩带。粒子波特性通过无量纲参数联系起来，提出了适用的无量纲扩散系数Kh(1)T/L02≈O（10−4）和Kv(1)T/L02≈O（10−5）。色散状态在10个波周期内从初始弹道过渡到次扩散。随后的超扩散状态主要受波浪陡度的影响，而受深度、粒子密度和大小的影响较小。然而，缺乏持续扩散状态表明扩散系数可能会错误估计近岸微塑料浓度。

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引用次数: 0

Spatial variability and controlling factors of residual salinity in aquitards of exploited coastal brine aquifers 沿海已开发咸水含水层含水层剩余盐度空间变异性及控制因素

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-21 DOI: 10.1016/j.ecss.2025.109628

Xuebang Huang , Zengbin Sun , Yuping Luo , Xiujun Guo , Mingbo Li

The Laizhou Bay (LZB) in China, the world's largest coastal underground brine field, faces severe threats to its resource sustainability from intensive mining. Although previous studies have established that salt release from aquitards is a crucial source of brine salinity replenishment, continuous extraction has now triggered a concerning spatial redistribution of this salt reserve within the aquitards. Understanding this heterogeneity is therefore an urgent prerequisite for accurate resource assessment and effective management. To address this, we employed chloride (Cl⁻) as a conservative tracer to investigate the vertical salinity distribution in aquitards and identify the controlling factors. Cl⁻ profiles from multiple sites across the 1300 km² mining area were correlated with key parameters reflecting the paleo-depositional environment (hydrodynamic indices, grain-size parameters), sediment physical properties (hydraulic conductivity), and modern hydrodynamic conditions (dynamic water levels under pumping disturbance). Our integrated analysis, combining geochemistry, groundwater dynamics, and sediment dynamics, revealed a systematic spatial pattern: overall higher salinity in the west than in the east, with increasing salinity with depth in the east and the opposite trend in the west. Three primary factors control this heterogeneity: (1) Paleo-depositional environment: High-energy conditions in the east deposited well-sorted, coarse sediments facilitating leaching, unlike the fine-grained, poorly-sorted deposits in the west that restrict it; (2) Sediment permeability: High-permeability layers in the east enable efficient salt flushing, while low-permeability layers in the west hinder groundwater flow and salt transport; (3) Modern groundwater dynamics: Intensive pumping causes large water-level fluctuations (e.g., an amplitude of 11 m at borehole 7# in the eastern cone of depression), creating strong vertical Cl⁻ gradients (up to 4.10 g/L/m) and enhancing leaching, whereas weaker dynamics slow release. This study provides the first systematic analysis of aquitard salinity heterogeneity and its controls in the LZB. The findings offer crucial scientific support for accurately assessing regional brine reserves, optimizing sustainable extraction strategies, and informing ecological conservation efforts.

中国莱州湾是世界上最大的沿海地下盐田，其资源可持续性面临着密集开采的严重威胁。虽然以前的研究已经确定，从含水层释放的盐是盐水盐度补充的一个重要来源，但持续的提取现在已经引发了含水层内盐储量的空间再分配。因此，了解这种异质性是准确评估资源和有效管理的迫切先决条件。为了解决这一问题，我们采用氯离子（Cl−）作为保守示踪剂，研究了水体中的垂直盐度分布，并确定了控制因素。1300 km2矿区多个地点的Cl−剖面与反映古沉积环境的关键参数（水动力指标、粒度参数）、沉积物物理性质（水力导电性）和现代水动力条件（抽水扰动下的动态水位）相关。综合地球化学、地下水动力学和沉积物动力学分析，揭示了西部盐度总体高于东部，东部盐度随深度增加而增加，西部盐度随深度增加而增加的系统空间格局。控制这种非均质性的主要因素有三个：(1)古沉积环境：东部的高能量条件下沉积了分选良好的粗质沉积层，有利于淋滤，而西部的细粒、差分选沉积层则限制了淋滤；(2)沉积物渗透性：东部高渗透层有利于盐的有效冲刷，而西部低渗透层阻碍地下水流动和盐的运移；(3)现代地下水动力学：密集抽水引起大的水位波动（例如，凹陷东锥7#井的振幅为11 m），产生强烈的垂直Cl -梯度（高达4.10 g/L/m）并加强淋滤，而较弱的动力学减慢了释放。本研究首次对LZB水体盐度非均质性及其控制因素进行了系统分析。研究结果为准确评估区域卤水储量、优化可持续开采策略和生态保护工作提供了重要的科学支持。

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引用次数: 0

Evaluating bio-carbon sequestration in Beibu Gulf marine ranching areas via EwE modelling and LMDI analysis 基于EwE模型和LMDI分析的北部湾海洋牧区生物碳固存评价

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-20 DOI: 10.1016/j.ecss.2025.109625

Wei Guo , Jie Feng , Haiyan Wang , Zhen Zhang , Shuang Liang , Tao Zhang , Haolin Yu

Marine ranching, which are artificially constructed nearshore ecosystems, increase carbon sequestration efficiency through bioremediation techniques such as stock enhancement and artificial reef deployment. Marine ranching enhances carbon sequestration but lacks robust evaluation methods. This article first develops a transferable framework for evaluating carbon sequestration in marine ranching by integrating ecosystem carbon budgets, dynamic carbon cycling, and the effects of species enhancement and fisheries management, and then applies this framework to the Beibu Gulf to demonstrate its generalisability and to identify the primary drivers. Based on field survey data, were developed Ecopath carbon mass models for a marine ranching and a nearby control area and fitted Ecosim models to simulate 12 stock enhancement-fishing scenarios combined with logarithmic mean Divisia index (LMDI) analysis. The results revealed that current artificial reef deployment increased the carbon flux and total carbon sequestration in the marine ranching area by 2.52 and 3.43 times compared with those in the control area, respectively. The “Mytilus + fishing” scenario (releasing Mytilus while maintaining current fishing) was simulated to achieve a high peak carbon sequestration efficiency of 2.21 times that of the baseline scenario. LMDI analysis revealed that expansion of the biomass scale compared to the community structure was the primary driver of carbon sequestration in all scenarios (>90.99 % contribution). Given the growing need for fisheries management to incorporate carbon sequestration considerations, particularly in marine ranching and other coastal ecosystems, the paper conclude by discussing the strengths and potential limitations of this framework and suggest directions for future development.

海洋牧场是人工构建的近岸生态系统，通过生物修复技术，如种群增加和人工珊瑚礁的部署，提高了碳固存效率。海洋牧场增强了碳固存，但缺乏可靠的评估方法。本文首先通过整合生态系统碳预算、动态碳循环、物种增强和渔业管理的影响，建立了一个可转移的海洋牧场碳封存评估框架，并将该框架应用于北部湾，以证明其通用性并确定其主要驱动因素。在野外调查数据的基础上，建立了Ecopath碳质量模型，并结合对数平均分度指数（LMDI）分析，拟合了Ecosim模型，模拟了12种种群增收-捕捞情景。结果表明，当前人工鱼礁的部署使海洋牧区的碳通量和总固碳量分别比对照区增加了2.52倍和3.43倍。模拟了“Mytilus +捕捞”情景（释放Mytilus同时保持当前捕捞），实现了峰值碳固存效率，是基线情景的2.21倍。LMDI分析显示，与群落结构相比，生物量规模的扩大是所有情景下碳固存的主要驱动力（贡献率为90.99%）。鉴于渔业管理日益需要纳入碳封存的考虑，特别是在海洋牧场和其他沿海生态系统中，本文最后讨论了这一框架的优势和潜在局限性，并提出了未来发展的方向。

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引用次数: 0

Reproductive dynamics of Scoletoma laurentiana (Polychaeta: Lumbrineridae) in NW Spain: Temperature-driven seasonal trends 西班牙西北部laurentiana（多毛纲：蚓科）的繁殖动态：温度驱动的季节趋势

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-19 DOI: 10.1016/j.ecss.2025.109612

D. Escobar-Ortega , L. Couceiro , A. Fernández-Piñeiro , P. Seoane , D. Fernández-Márquez , R. Muíño , N. Fernández

Understanding reproductive cycles is essential for the sustainable management of marine resources, particularly those of exploited yet understudied invertebrates such as the polychaete Scoletoma laurentiana, a key bait species in Galicia (NW Spain). This study provides the first detailed description of its reproductive cycle in temperate Atlantic waters, focusing on seasonal dynamics and environmental drivers. Monthly samples collected during 2021 and 2023 at three coastal sites were analyzed through image-based quantification of oocyte size in relation to seawater temperature and photoperiod. The results revealed synchronous oogenic development at the individual level but asynchronous at the population scale, indicating extended spawning periods. Oogenesis began in late autumn, peaked in spring, and ceased completely during summer. Overall mean oocyte diameter was 172.27 μm ± 22.52, with significant spatial and interannual differences indicating reproductive plasticity. A strong inverse correlation between seawater temperature and the proportion of ovigerous females confirmed temperature as the main driver of spawning initiation, whereas photoperiod showed no significant effect. These findings provide the first comprehensive evidence of temperature-mediated reproductive seasonality in S. laurentiana, offering critical baseline knowledge for the sustainable management of this species in the northeastern Atlantic. Furthermore, the results indicate that the species productivity may be subject to alteration in response to climate change.

了解生殖周期对于海洋资源的可持续管理至关重要，特别是对于那些被开发但研究不足的无脊椎动物，如加利西亚（西班牙西北部）的一种关键饵料物种——多毛鱼Scoletoma laurentiana。本研究首次详细描述了其在温带大西洋水域的繁殖周期，重点关注季节动态和环境驱动因素。通过基于图像的定量分析卵母细胞大小与海水温度和光周期的关系，分析了2021年和2023年在三个沿海站点采集的每月样本。结果表明，在个体水平上卵源发育同步，而在种群尺度上卵源发育不同步，表明产卵周期延长。卵发生开始于深秋，在春季达到顶峰，在夏季完全停止。总体平均卵母细胞直径为172.27 μm±22.52，具有显著的空间和年际差异，表明生殖可塑性。海水温度与卵生雌鱼比例呈显著负相关，表明温度是雌鱼产卵启动的主要驱动因素，而光周期对雌鱼产卵启动的影响不显著。这些发现首次提供了温度介导的劳伦提纳（S. laurentiana）繁殖季节性的综合证据，为大西洋东北部该物种的可持续管理提供了关键的基线知识。此外，研究结果表明，物种生产力可能会随着气候变化而发生变化。

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引用次数: 0

Seasonal modulation of the spring-neap response of Yangtze Estuary turbidity maximum: Movement, amplitude, and phase lag via remote sensing 长江口浊度最大值春小潮响应的季节调节：运动、幅度和相位滞后的遥感分析

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science

Pub Date : 2025-11-14 DOI: 10.1016/j.ecss.2025.109624

Jie Feng , Qian Yu , Shiyi Cao , Zhiyun Du , Hangjie Lin , Ya Ping Wang , Yunwei Wang

Estuarine turbidity maximum zones (ETMs) exhibit significant spring-neap and seasonal variations. Quantifying these dynamics from sparse, long-term remote sensing data is crucial for understanding ETM evolution. Using hourly GOCI satellite imagery (2011–2021) from the Yangtze Estuary, we applied Lomb-Scargle periodogram and phase-folded methods to extract the horizontal movement characteristics (amplitude and phase) of the ETM, tracked via 150, 100, and 50 mg/L SSC isolines. We found that the ETM extent has obvious spring-neap variations that lag the tidal cycle. Notably, high-SSC regions showed heightened sensitivity to tidal forcing: the 150 mg/L isoline had a larger amplitude (5.05 km) and shorter lag (1.42 days) compared to the 50 mg/L isoline (4.29 km amplitude, 1.99-day lag). Both amplitude and phase also exhibited significant seasonality. The phase lag proved highly sensitive to these seasonal changes: it was most pronounced in summer (a 2.44-day lag), decreased in spring (1.32 days) and autumn (0.65 days), and became a slight phase lead in winter (−0.13 days). These seasonal dynamics are linked to variations in sediment supply, waves, and river discharge. This study's approach provides a robust framework for extracting ETM spring-neap characteristics from sparse satellite data, clarifying multi-timescale ETM responses for similar estuarine studies.

河口浊度最大值带（ETMs）表现出明显的春季小潮和季节变化。从稀疏的长期遥感数据中量化这些动态对于理解ETM的演变至关重要。利用2011-2021年长江口逐时GOCI卫星影像，采用Lomb-Scargle周期图和相位折叠方法提取了150、100和50 mg/L SSC等值线追踪的ETM水平运动特征（振幅和相位）。研究发现，东海道ETM范围存在明显的春季-小潮变化，滞后于潮汐周期。值得注意的是，高ssc区域对潮汐强迫表现出更高的敏感性：与50 mg/L等值线（振幅4.29 km，滞后1.99 d）相比，150 mg/L等值线的振幅更大（5.05 km），滞后时间更短（1.42 d）。振幅和相位也表现出明显的季节性。相位滞后对这些季节变化非常敏感，夏季最明显（滞后2.44 d），春季（滞后1.32 d）和秋季（滞后0.65 d）减弱，冬季（滞后- 0.13 d）略有领先。这些季节性动态与泥沙供应、波浪和河流流量的变化有关。该方法为从稀疏的卫星数据中提取ETM春季小潮特征提供了一个强大的框架，为类似的河口研究阐明了多时间尺度的ETM响应。

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引用次数: 0