Journal of Sea Research最新文献_第2页

Habitat differences and vertical migration patterns of mesopelagic fish: A case study on the trophic niche of Chauliodus sloani in cold seep-adjacent waters 中上层鱼类的生境差异及垂直迁移模式——以邻近冷渗水域的sloani Chauliodus营养生态位为例

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2026-01-01 DOI: 10.1016/j.seares.2025.102662

Juan Shi , Xiaolan Kong , Teng Wang , Chunhou Li , Jinfa Zhao , Yayuan Xiao , Yu Liu , Yancong Cai , Xuefu Ao , Yan'e Jiang , Hongyu Xie , Jinhui Sun , Yong Liu , Xiaoyu Song , Yanqiao Wang , Junyun Liu

The adaptive strategies of species to differentiated habitats represent a universal ecological principle. This study takes Chauliodus sloani, a dominant mesopelagic fish in cold seep-adjacent waters, as a model to explore the adaptive patterns of its trophic niche in differentiated habitats. In August 2023, C. sloani samples were collected at different depths (75–750 m) and regions (cold seep and non-cold seep areas). Stable carbon and nitrogen isotope techniques were employed to characterize their trophic niche attributes. Results indicated that the δ¹³C value of C. sloani in cold seep-adjacent waters was −19.29 ± 0.31 ‰, δ¹⁵N was 9.83 ± 0.53 ‰, and the trophic level was 3.37 ± 0.68. Trophic indicators including carbon isotope range (CR), nitrogen isotope range (NR), mean centroid distance (CD), mean nearest neighbor distance (MNND), and standard deviation of MNND (SDNND) were higher in non-cold seep areas than in cold seep areas at the same water depth. This supports that C. sloani in cold seep areas exhibit lower dietary diversity but higher redundancy and evenness, endowing populations with stronger anti-disturbance capabilities. The directional changes in trophic structures further validated this result, confirming more stable trophic structures in cold seep populations. At 750 m depth, C. sloani exhibited minimal overlap in core trophic niche (SEAc) with other depths, demonstrating significant niche differentiation and independent population establishment at the strata. Zooplankton constituted the primary food source of C. sloani, but the contribution ratio of food sources varied significantly with depth. The contribution ratio of cephalopod prey increased with increasing water depth. This research elucidates both the adaptive strategies of C. sloani trophic niches across heterogeneous habitats and verifies distinctive diel vertical migration behaviors in mesopelagic fishes, offering novel insights into deep-sea organism survival mechanisms within complex ecosystems and associated energy transfer pathways.

物种对不同生境的适应策略是一个普遍的生态学原理。本研究以寒渗区中上层优势鱼类sloani Chauliodus为研究对象，探讨其营养生态位在不同生境中的适应模式。2023年8月，在不同深度（75 ~ 750 m）和不同区域（冷渗区和非冷渗区）采集了C. sloani样品。采用稳定碳氮同位素技术对其营养生态位属性进行了表征。结果表明：邻近冷渗水体中sloani的δ13C值为- 19.29±0.31‰，δ15N值为9.83±0.53‰，营养等级为3.37±0.68。相同水深下，非冷渗区碳同位素范围（CR）、氮同位素范围（NR）、平均质心距离（CD）、平均最近邻距离（MNND）和MNND标准差（SDNND）等营养指标均高于冷渗区。这说明，在寒冷地区，食源多样性较低，但具有较高的冗余性和均匀性，种群具有较强的抗干扰能力。营养结构的方向性变化进一步验证了这一结果，证实了冷渗种群中更稳定的营养结构。在750 m深度处，石竹的核心营养生态位（SEAc）与其他深度的重叠最小，表现出明显的生态位分化和独立的种群建立。浮游动物是梭鲈的主要食物来源，但食物来源的贡献比例随深度变化显著。头足类猎物的贡献率随着水深的增加而增加。本研究阐明了sloani营养生态位在异质生境中的适应策略，并验证了中上层鱼类独特的垂直迁移行为，为复杂生态系统中深海生物的生存机制和相关能量转移途径提供了新的见解。

{"title":"Habitat differences and vertical migration patterns of mesopelagic fish: A case study on the trophic niche of Chauliodus sloani in cold seep-adjacent waters","authors":"Juan Shi , Xiaolan Kong , Teng Wang , Chunhou Li , Jinfa Zhao , Yayuan Xiao , Yu Liu , Yancong Cai , Xuefu Ao , Yan'e Jiang , Hongyu Xie , Jinhui Sun , Yong Liu , Xiaoyu Song , Yanqiao Wang , Junyun Liu","doi":"10.1016/j.seares.2025.102662","DOIUrl":"10.1016/j.seares.2025.102662","url":null,"abstract":"<div><div>The adaptive strategies of species to differentiated habitats represent a universal ecological principle. This study takes <em>Chauliodus sloani</em>, a dominant mesopelagic fish in cold seep-adjacent waters, as a model to explore the adaptive patterns of its trophic niche in differentiated habitats. In August 2023, <em>C. sloani</em> samples were collected at different depths (75–750 m) and regions (cold seep and non-cold seep areas). Stable carbon and nitrogen isotope techniques were employed to characterize their trophic niche attributes. Results indicated that the δ<sup>13</sup>C value of <em>C. sloani</em> in cold seep-adjacent waters was −19.29 ± 0.31 ‰, δ<sup>15</sup>N was 9.83 ± 0.53 ‰, and the trophic level was 3.37 ± 0.68. Trophic indicators including carbon isotope range (CR), nitrogen isotope range (NR), mean centroid distance (CD), mean nearest neighbor distance (MNND), and standard deviation of MNND (SDNND) were higher in non-cold seep areas than in cold seep areas at the same water depth. This supports that <em>C. sloani</em> in cold seep areas exhibit lower dietary diversity but higher redundancy and evenness, endowing populations with stronger anti-disturbance capabilities. The directional changes in trophic structures further validated this result, confirming more stable trophic structures in cold seep populations. At 750 m depth, <em>C. sloani</em> exhibited minimal overlap in core trophic niche (SEAc) with other depths, demonstrating significant niche differentiation and independent population establishment at the strata. Zooplankton constituted the primary food source of <em>C. sloani</em>, but the contribution ratio of food sources varied significantly with depth. The contribution ratio of cephalopod prey increased with increasing water depth. This research elucidates both the adaptive strategies of <em>C. sloani</em> trophic niches across heterogeneous habitats and verifies distinctive diel vertical migration behaviors in mesopelagic fishes, offering novel insights into deep-sea organism survival mechanisms within complex ecosystems and associated energy transfer pathways.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"209 ","pages":"Article 102662"},"PeriodicalIF":2.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strength and duration of diel pH and dissolved oxygen cycles control the survival and performance of early life stage North Atlantic bivalves (Mercenaria mercenaria, Crassostrea virginica, Argopecten irradians and Mytilus edulis) 水体pH和溶解氧循环的强度和持续时间控制着北大西洋双壳类（雇佣兵、珍珠贝、Argopecten irradians和Mytilus edulis）生命早期阶段的生存和性能。

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2026-01-01 DOI: 10.1016/j.seares.2025.102661

Jeffrey Kraemer, Christopher J. Gobler

Many economically important bivalves spawn during the summer months when diel cycles of dissolved oxygen (DO) and pH occur in estuaries. Little is known, however, regarding how cycles of differing durations and magnitudes affect these organisms. Here, larval bivalves (Mercenaria mercenaria, Crassostrea virginica, Argopecten irradians) and juvenile mussels (Mytilus edulis) were exposed to cycles of low DO and pH of varying duration (4-, 6-, 8-, and 12-h) and strength (moderate: DO range ∼ 6 mg L⁻¹, pH range ∼ 0.6 and severe: DO range ∼ 10 mg L⁻¹, pH range ∼ 0.9) compared to positive (normoxic and normocapnic) and negative (hypoxic and acidified) static controls. Growth, survival, respiration and clearance rates were measured. During experiments, 12 h of nocturnal hypoxia and acidification coupled with mildly hyperoxic (∼11.3 mg L⁻¹ DO) and hypocapnic (∼8.13 pH) conditions by day significantly reduced survival in larval C. virginica, M. mercenaria, and A. irradians in all experiments (p < 0.05), while 12 h of nocturnal hypoxia and acidification without hyperoxic and hypocapnic conditions did so in only half of experiments indicating that hyperoxia and hypocapnia were additional and significant stressors. Six hours of low DO/pH significantly reduced survival in only 16 % of experiments, indicating that larval bivalves are more impacted by longer duration and greater magnitude cycles of DO and pH compared to cycles of shorter duration or lower magnitude. Across species, M. mercenaria larvae were more resilient to nocturnal hypoxia and acidification than A. irradians and C. virginica. The growth and survival of juvenile M. edulis were unaffected by nocturnal hypoxia and acidification but mussels experienced significantly increased clearance and respiration rates under these conditions (p < 0.01) evidencing physiological mechanisms for coping with these stressors. Collectively, this study demonstrates that the impacts of diel DO and pH cycles on early life stage bivalves are dependent upon cycle duration, cycle intensity, bivalve life stage, and bivalve species.

许多经济上重要的双壳类在夏季产卵，此时河口溶解氧（DO）和pH值发生了昼夜循环。然而，关于不同持续时间和强度的周期如何影响这些生物体，我们知之甚少。本研究中，将双壳类幼体（鳉鱼、珍珠贝、珍珠贝）和贻贝幼体（Mytilus edulis）暴露于不同持续时间（4、6、8和12小时）和强度（中度：DO范围~ 6 mg L−1，pH范围~ 0.6和重度：DO范围~ 10 mg L−1，pH范围~ 0.9）的低DO和pH循环中，与阳性（正氧和正氧）和阴性（缺氧和酸化）静态对照进行比较。测量生长、存活、呼吸和清除率。在实验中，12小时的夜间缺氧和酸化加上白天轻度高氧（~ 11.3 mg L−1 DO）和低碳酸血症（~ 8.13 pH）的条件，在所有实验中都显著降低了virginica、M. mercenaria和A. irradians的存活率（p < 0.05），而12小时的夜间缺氧和酸化没有高氧和低碳酸血症的情况下，只有一半的实验降低了存活率，这表明高氧和低碳酸血症是额外的和重要的应激源。在只有16%的实验中，6小时的低DO/pH显著降低了存活率，这表明与较短时间或较低强度的周期相比，较长时间和较大幅度的DO和pH周期对双壳类幼虫的影响更大。在不同的物种中，雇佣兵蒿的幼虫对夜间缺氧和酸化的适应能力强于伊尔达蒿和锦绣蒿。夜间缺氧和酸化对毛竹蚌幼鱼的生长和存活没有影响，但在这些条件下，贻贝的清除率和呼吸速率显著增加（p < 0.01），证明了应对这些应激源的生理机制。总之，本研究表明，水体DO和pH循环对双壳动物早期生命阶段的影响取决于周期持续时间、周期强度、双壳动物生命阶段和双壳动物种类。

{"title":"Strength and duration of diel pH and dissolved oxygen cycles control the survival and performance of early life stage North Atlantic bivalves (Mercenaria mercenaria, Crassostrea virginica, Argopecten irradians and Mytilus edulis)","authors":"Jeffrey Kraemer, Christopher J. Gobler","doi":"10.1016/j.seares.2025.102661","DOIUrl":"10.1016/j.seares.2025.102661","url":null,"abstract":"<div><div>Many economically important bivalves spawn during the summer months when diel cycles of dissolved oxygen (DO) and pH occur in estuaries. Little is known, however, regarding how cycles of differing durations and magnitudes affect these organisms. Here, larval bivalves (<em>Mercenaria mercenaria, Crassostrea virginica, Argopecten irradians</em>) and juvenile mussels (<em>Mytilus edulis</em>) were exposed to cycles of low DO and pH of varying duration (4-, 6-, 8-, and 12-h) and strength (moderate: DO range ∼ 6 mg L<sup>−1</sup>, pH range ∼ 0.6 and severe: DO range ∼ 10 mg L<sup>−1</sup>, pH range ∼ 0.9) compared to positive (normoxic and normocapnic) and negative (hypoxic and acidified) static controls. Growth, survival, respiration and clearance rates were measured. During experiments, 12 h of nocturnal hypoxia and acidification coupled with mildly hyperoxic (∼11.3 mg L<sup>−1</sup> DO) and hypocapnic (∼8.13 pH) conditions by day significantly reduced survival in larval <em>C. virginica</em>, <em>M. mercenaria</em>, and <em>A. irradians</em> in all experiments (<em>p</em> < 0.05), while 12 h of nocturnal hypoxia and acidification without hyperoxic and hypocapnic conditions did so in only half of experiments indicating that hyperoxia and hypocapnia were additional and significant stressors. Six hours of low DO/pH significantly reduced survival in only 16 % of experiments, indicating that larval bivalves are more impacted by longer duration and greater magnitude cycles of DO and pH compared to cycles of shorter duration or lower magnitude. Across species, <em>M. mercenaria</em> larvae were more resilient to nocturnal hypoxia and acidification than <em>A. irradians</em> and <em>C. virginica</em>. The growth and survival of juvenile <em>M. edulis</em> were unaffected by nocturnal hypoxia and acidification but mussels experienced significantly increased clearance and respiration rates under these conditions (<em>p</em> < 0.01) evidencing physiological mechanisms for coping with these stressors. Collectively, this study demonstrates that the impacts of diel DO and pH cycles on early life stage bivalves are dependent upon cycle duration, cycle intensity, bivalve life stage, and bivalve species.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"209 ","pages":"Article 102661"},"PeriodicalIF":2.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the impact of marine financial support on economic resilience and sustainable development in coastal areas 海洋金融支持对沿海地区经济弹性和可持续发展的影响研究

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2025-12-31 DOI: 10.1016/j.seares.2025.102665

Shenglin Zhou , Zhicheng Wan , Xinwei Li

Marine financial support, as an important means of optimizing resource allocation and risk protection in coastal areas, provides key support for enhancing economic resilience and achieving sustainable development. This paper constructs the Marine financial support index based on panel data of 11 coastal provinces in China from 2011 to 2023, and uses fixed effects, instrumental variables and threshold models to systematically evaluate its economic and ecological effects. The study found that Marine financial support significantly enhanced the economic resilience and sustainable development level of coastal regions, and its promoting effect was achieved through the optimization of capital factor allocation and the improvement of green innovation capacity, and showed obvious nonlinear threshold characteristics. Heterogeneity analysis shows that after the release of the maritime power strategy, the function of Marine finance has shifted from scale expansion to quality improvement, and its role is more prominent in regions with a better economic foundation, moderate environmental regulations and southern coastal areas. This paper provides empirical evidence and policy references for optimizing the allocation of Marine financial resources and enhancing the resilience and green transformation capacity of coastal systems.

海洋金融支持是沿海地区优化资源配置和风险防范的重要手段，是增强经济韧性、实现可持续发展的重要支撑。本文基于2011 - 2023年中国11个沿海省份的面板数据构建了海洋金融支持指数，并运用固定效应、工具变量和阈值模型对其经济和生态效应进行了系统评价。研究发现，海洋金融支持显著提升了沿海地区的经济弹性和可持续发展水平，其促进作用是通过优化资本要素配置和提高绿色创新能力实现的，并表现出明显的非线性阈值特征。异质性分析表明，海洋强国战略发布后，海洋金融的功能由规模扩张转向质量提升，在经济基础较好、环境规制温和的地区和南部沿海地区作用更为突出。本文为优化海洋金融资源配置，增强沿海系统弹性和绿色转型能力提供了经验证据和政策参考。

{"title":"Research on the impact of marine financial support on economic resilience and sustainable development in coastal areas","authors":"Shenglin Zhou , Zhicheng Wan , Xinwei Li","doi":"10.1016/j.seares.2025.102665","DOIUrl":"10.1016/j.seares.2025.102665","url":null,"abstract":"<div><div>Marine financial support, as an important means of optimizing resource allocation and risk protection in coastal areas, provides key support for enhancing economic resilience and achieving sustainable development. This paper constructs the Marine financial support index based on panel data of 11 coastal provinces in China from 2011 to 2023, and uses fixed effects, instrumental variables and threshold models to systematically evaluate its economic and ecological effects. The study found that Marine financial support significantly enhanced the economic resilience and sustainable development level of coastal regions, and its promoting effect was achieved through the optimization of capital factor allocation and the improvement of green innovation capacity, and showed obvious nonlinear threshold characteristics. Heterogeneity analysis shows that after the release of the maritime power strategy, the function of Marine finance has shifted from scale expansion to quality improvement, and its role is more prominent in regions with a better economic foundation, moderate environmental regulations and southern coastal areas. This paper provides empirical evidence and policy references for optimizing the allocation of Marine financial resources and enhancing the resilience and green transformation capacity of coastal systems.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102665"},"PeriodicalIF":2.9,"publicationDate":"2025-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long-term changes in the subtidal macrozoobenthos of the western Dutch Wadden Sea 荷兰西部瓦登海潮下大型底栖动物的长期变化

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2025-12-30 DOI: 10.1016/j.seares.2025.102666

Andreas M. Waser , Rob Dekker , Jan Drent , Jaap van der Meer

The comparison of two large-scale surveys (1981/82 and 2008), combined with annual monitoring of the subtidal macrofauna in the western Dutch Wadden Sea from 1990 to 2018, revealed pronounced temporal changes in macrobenthic community composition over the past four decades. In the early 1980s, mussels (Mytilus edulis) dominated the macrobenthic biomass, but their contribution had strongly declined by 2008. This decline was evident both on natural mussel beds and on culture plots, pointing to a widespread reduction in mussel biomass across the subtidal western Dutch Wadden Sea. Likewise, the biomass of the bivalves Macoma balthica and Cerastoderma edule also declined strongly in the course of the study period. In contrast, biomass of several non-native species, such as the bivalves Mya arenaria and Ensis leei, increased strongly in the same period and became the dominating species. Other invaders, such as the polychaete Marenzelleria viridis, experienced considerable fluctuations during the early 2000s. Typical for invasion trajectories, it increased dramatically to the dominating macrozoobenthos species, but soon after decreased to marginal levels (boom and bust dynamics). Despite the large changes in the species composition there were very little changes in the distribution of biomass among the different feeding and taxonomic groups. This study shows that the macrozoobenthos of the subtidal western Dutch Wadden is prone to considerable temporal fluctuations. As a result of species introductions, the benthic community has changed from a predominantly native species dominated community to one where introduced species make up a prominent part of the community.

1981/82年和2008年两次大规模调查的比较，结合1990年至2018年对荷兰瓦登海西部潮下大型动物的年度监测，揭示了过去40年来大型底栖动物群落组成的明显时间变化。在20世纪80年代初，贻贝（Mytilus edulis）在大型底栖动物生物量中占主导地位，但到2008年，贻贝的贡献急剧下降。这种下降在天然贻贝床和养殖地都很明显，表明荷兰瓦登海西部潮下贻贝生物量普遍减少。同样，在研究期间，双壳类动物的生物量也明显下降。与此相反，双壳类动物沙螺（Mya arenaria）和沙螺（Ensis leei）等非本地物种的生物量在同一时期显著增加，成为优势种。其他入侵者，如多毛藻Marenzelleria viridis，在21世纪初经历了相当大的波动。典型的入侵轨迹，它急剧增加到占主导地位的大型底栖动物物种，但很快就下降到边缘水平（繁荣与萧条动力学）。尽管物种组成变化较大，但不同摄食类群和不同分类类群间生物量分布变化不大。本研究表明，荷兰瓦登西部潮下大型底栖动物容易发生相当大的时间波动。由于物种的引入，底栖生物群落已经从一个以本地物种为主的群落转变为一个以引进物种为主的群落。

{"title":"Long-term changes in the subtidal macrozoobenthos of the western Dutch Wadden Sea","authors":"Andreas M. Waser , Rob Dekker , Jan Drent , Jaap van der Meer","doi":"10.1016/j.seares.2025.102666","DOIUrl":"10.1016/j.seares.2025.102666","url":null,"abstract":"<div><div>The comparison of two large-scale surveys (1981/82 and 2008), combined with annual monitoring of the subtidal macrofauna in the western Dutch Wadden Sea from 1990 to 2018, revealed pronounced temporal changes in macrobenthic community composition over the past four decades. In the early 1980s, mussels (<em>Mytilus edulis</em>) dominated the macrobenthic biomass, but their contribution had strongly declined by 2008. This decline was evident both on natural mussel beds and on culture plots, pointing to a widespread reduction in mussel biomass across the subtidal western Dutch Wadden Sea. Likewise, the biomass of the bivalves <em>Macoma balthica</em> and <em>Cerastoderma edule</em> also declined strongly in the course of the study period. In contrast, biomass of several non-native species, such as the bivalves <em>Mya arenaria</em> and <em>Ensis leei</em>, increased strongly in the same period and became the dominating species. Other invaders, such as the polychaete <em>Marenzelleria viridis</em>, experienced considerable fluctuations during the early 2000s. Typical for invasion trajectories, it increased dramatically to the dominating macrozoobenthos species, but soon after decreased to marginal levels (boom and bust dynamics). Despite the large changes in the species composition there were very little changes in the distribution of biomass among the different feeding and taxonomic groups. This study shows that the macrozoobenthos of the subtidal western Dutch Wadden is prone to considerable temporal fluctuations. As a result of species introductions, the benthic community has changed from a predominantly native species dominated community to one where introduced species make up a prominent part of the community.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102666"},"PeriodicalIF":2.9,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic ecological compensation and delayed strategies in China's coordinated land-sea governance: An evolutionary game analysis 中国陆海协调治理中的动态生态补偿与延迟策略：一个演化博弈分析

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2025-12-13 DOI: 10.1016/j.seares.2025.102660

An Yan , Hu Tian , Qiaorong Yin , Xin Ding

China's coastal marine ecosystems face severe challenges, including fragmented governance and cross-regional externalities. This makes it urgent to establish an integrated and efficient land-sea coordinated governance system. This study explores ecological compensation as a strategic entry point and develops four evolutionary game models: a model under static strategy, a model under dynamic vertical ecological compensation, a model under dynamic horizontal ecological compensation, and a time-delay effect model. Parameter settings are partly based on typical Chinese cases and partly on expert judgment and literature references, with corresponding numerical simulations. The research conclusions are as follows. (1) The regulatory returns obtained by higher-level governments are a decisive factor influencing whether the system evolves toward a stable and coordinated governance equilibrium. (2) The vertical ecological compensation amount should remain within an appropriate range, whereas increasing the penalty intensity can further enhance system stability. The horizontal ecological compensation mechanism strengthens local governments' motivation for active governance and alleviates the regulatory pressure on higher-level governments within the simulated framework. (3) In terms of policy implementation, the dynamic vertical ecological compensation strategy facilitates the system's convergence toward an optimal evolutionary equilibrium, whereas the dynamic horizontal ecological compensation strategy exerts a comparatively weaker stabilizing effect. (4) Introducing time-delay effects enhances system stability and shows stronger convergence than the dynamic vertical ecological compensation strategy, particularly when higher-level governments respond after local ones. This study provides theoretical support for ecological governance strategies in China's coastal waters under land-sea integrated management.

中国沿海海洋生态系统面临严峻挑战，包括治理碎片化和跨区域外部性。因此，迫切需要建立一体化、高效的陆海协调治理体系。本文以生态补偿为战略切入点，建立了静态策略下的生态补偿模型、动态垂直生态补偿模型、动态水平生态补偿模型和时滞效应模型。参数设置部分基于中国典型案例，部分基于专家判断和文献参考，并进行了相应的数值模拟。研究结论如下：(1)上级政府获得的监管收益是影响制度是否向稳定协调的治理均衡演进的决定性因素。(2)垂直生态补偿量应保持在适当范围内，加大惩罚强度可进一步增强系统稳定性。横向生态补偿机制增强了地方政府主动治理的动力，缓解了模拟框架内上级政府的监管压力。(3)在政策执行方面，动态纵向生态补偿策略有利于系统向最优进化均衡收敛，而动态横向生态补偿策略的稳定作用相对较弱。(4)与纵向动态生态补偿策略相比，引入时滞效应增强了系统稳定性，并表现出更强的收敛性，特别是在上级政府先于地方政府响应时。本研究为陆海一体化管理下的中国沿海水域生态治理策略提供理论支持。

{"title":"Dynamic ecological compensation and delayed strategies in China's coordinated land-sea governance: An evolutionary game analysis","authors":"An Yan , Hu Tian , Qiaorong Yin , Xin Ding","doi":"10.1016/j.seares.2025.102660","DOIUrl":"10.1016/j.seares.2025.102660","url":null,"abstract":"<div><div>China's coastal marine ecosystems face severe challenges, including fragmented governance and cross-regional externalities. This makes it urgent to establish an integrated and efficient land-sea coordinated governance system. This study explores ecological compensation as a strategic entry point and develops four evolutionary game models: a model under static strategy, a model under dynamic vertical ecological compensation, a model under dynamic horizontal ecological compensation, and a time-delay effect model. Parameter settings are partly based on typical Chinese cases and partly on expert judgment and literature references, with corresponding numerical simulations. The research conclusions are as follows. (1) The regulatory returns obtained by higher-level governments are a decisive factor influencing whether the system evolves toward a stable and coordinated governance equilibrium. (2) The vertical ecological compensation amount should remain within an appropriate range, whereas increasing the penalty intensity can further enhance system stability. The horizontal ecological compensation mechanism strengthens local governments' motivation for active governance and alleviates the regulatory pressure on higher-level governments within the simulated framework. (3) In terms of policy implementation, the dynamic vertical ecological compensation strategy facilitates the system's convergence toward an optimal evolutionary equilibrium, whereas the dynamic horizontal ecological compensation strategy exerts a comparatively weaker stabilizing effect. (4) Introducing time-delay effects enhances system stability and shows stronger convergence than the dynamic vertical ecological compensation strategy, particularly when higher-level governments respond after local ones. This study provides theoretical support for ecological governance strategies in China's coastal waters under land-sea integrated management.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"209 ","pages":"Article 102660"},"PeriodicalIF":2.9,"publicationDate":"2025-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145791325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Contrasting roles of Changjiang diluted water on phytoplankton dynamics near a temperate volcanic island: Implications for the island mass effect 长江稀释水对温带火山岛附近浮游植物动力学的对比作用：对岛屿质量效应的启示

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2025-12-05 DOI: 10.1016/j.seares.2025.102659

Dongyoung Kim , Jung Hyun Kwak , Hyun-Sil Kang , Hyun Je Park

Changjiang diluted water (CDW) substantially affects physicochemical and phytoplankton dynamics in the East China Sea, yet its ecological role near oceanic islands remains poorly understood. We investigated how CDW modulates primary productivity and phytoplankton community structure in the coastal waters of Jeju Island in August 2024. When CDW strongly influenced the area, phytoplankton primary productivity increased markedly in the weakly stratified, nitrogen-replete western coast, but was constrained in the strongly stratified, nitrogen-depleted southern coast. Nitrate uptake measurements revealed that the productivity enhancement was closely tied to nitrate availability and assimilation rates. Under strong CDW influence, phytoplankton community structure became simplified, with dinoflagellates dominating the highly productive western coast and cyanobacterial prevailing in the nutrient-limited southern coast. Small-sized phytoplankton groups were prevalent when the CDW influence decreased. Dinoflagellates displayed a bifurcated response to nutrient limitation, increasing under phosphorus limitation and decreasing under nitrogen limitation. Multivariate analysis identified nitrate concentration and stratification intensity as integrative indicators of the relationship between physical forcing and low-trophic-level responses. The CDW-driven process illustrates an amplification of the island mass effect through physical mixing and nutrient enrichment around the island located along the CDW transport pathway, promoting episodic blooms and modulating phytoplankton communities.

长江稀释水（CDW）对东海海域的物理化学和浮游植物动力学具有重要影响，但其在海洋岛屿附近的生态作用尚不清楚。我们于2024年8月对济州岛近海海域的CDW对初级生产力和浮游植物群落结构的调节进行了研究。当CDW强烈影响海域时，弱分层、富氮的西海岸浮游植物初级生产力显著增加，而在强分层、贫氮的南部海岸浮游植物初级生产力受到限制。硝酸盐吸收测量表明，生产力的提高与硝酸盐有效性和同化率密切相关。在强烈的CDW影响下，浮游植物群落结构变得简化，在高产的西海岸以鞭毛藻为主，在营养有限的南部海岸以蓝藻为主。当CDW影响减弱时，小型浮游植物群普遍存在。鞭毛藻对养分限制表现出两极反应，在磷限制下增加，在氮限制下减少。多变量分析发现硝酸盐浓度和分层强度是物理强迫与低营养水平响应之间关系的综合指标。CDW驱动的过程表明，CDW通过物理混合和岛屿周围沿CDW运输路径的营养物质富集，促进了偶发性水华和调节浮游植物群落，从而放大了岛屿质量效应。

{"title":"Contrasting roles of Changjiang diluted water on phytoplankton dynamics near a temperate volcanic island: Implications for the island mass effect","authors":"Dongyoung Kim , Jung Hyun Kwak , Hyun-Sil Kang , Hyun Je Park","doi":"10.1016/j.seares.2025.102659","DOIUrl":"10.1016/j.seares.2025.102659","url":null,"abstract":"<div><div>Changjiang diluted water (CDW) substantially affects physicochemical and phytoplankton dynamics in the East China Sea, yet its ecological role near oceanic islands remains poorly understood. We investigated how CDW modulates primary productivity and phytoplankton community structure in the coastal waters of Jeju Island in August 2024. When CDW strongly influenced the area, phytoplankton primary productivity increased markedly in the weakly stratified, nitrogen-replete western coast, but was constrained in the strongly stratified, nitrogen-depleted southern coast. Nitrate uptake measurements revealed that the productivity enhancement was closely tied to nitrate availability and assimilation rates. Under strong CDW influence, phytoplankton community structure became simplified, with dinoflagellates dominating the highly productive western coast and cyanobacterial prevailing in the nutrient-limited southern coast. Small-sized phytoplankton groups were prevalent when the CDW influence decreased. Dinoflagellates displayed a bifurcated response to nutrient limitation, increasing under phosphorus limitation and decreasing under nitrogen limitation. Multivariate analysis identified nitrate concentration and stratification intensity as integrative indicators of the relationship between physical forcing and low-trophic-level responses. The CDW-driven process illustrates an amplification of the island mass effect through physical mixing and nutrient enrichment around the island located along the CDW transport pathway, promoting episodic blooms and modulating phytoplankton communities.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"209 ","pages":"Article 102659"},"PeriodicalIF":2.9,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First large-scale abundance estimates of fin whales (Balaenoptera physalus) in the North Pacific: Implications for management 北太平洋长须鲸（Balaenoptera physalus）首次大规模丰度估计：对管理的影响

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2025-12-01 DOI: 10.1016/j.seares.2025.102647

Megumi Takahashi, Koji Matsuoka, Takashi Hakamada

The fin whale (Balaenoptera physalus) was exploited by global commercial whaling well beyond sustainable population levels in most regions since the early 1870s. In the post-whaling era, fin whale populations in several regions may have stabilized or begun recovering from historical depletion. However, large-scale abundance information has remained limited owing to the high operating costs of surveys and the challenges of international cooperation. We report the first large-scale abundance estimates for the entire North Pacific during the boreal summer (July to September) using vessel-based line transect sighting data collected through long-term domestic and international research programs over two periods: 2008–2014 and 2017–2022. During the second period, the survey area included the Bering Sea. Assuming a detection probability on the trackline g(0) of 1, the abundance estimates were 6,633 (CV = 0.453) and 31,835 (CV = 0.264) individuals for the western and eastern North Pacific, respectively, in the first period; and 4,405 (CV = 0.241), 37,297 (CV = 0.181), and 9,885 (CV = 0.201) for the western and eastern North Pacific and Bering Sea, respectively, in the second period. Considering g(0) corrections, the corrected abundance estimates for the entire North Pacific were 44,523 (CV = 0.234) and 45,344 (CV = 0.167) in the first and second periods, respectively. For the Bering Sea, the estimate was 10,234 (CV = 0.202) in the second period. These new estimates are available for the conservation and management purposes of this species in the North Pacific.

自19世纪70年代初以来，长须鲸（Balaenoptera physalus）被全球商业捕鲸所利用，远远超过了大多数地区的可持续人口水平。在后捕鲸时代，一些地区的长须鲸数量可能已经稳定下来，或者开始从历史上的枯竭中恢复过来。但是，由于调查的业务费用高和国际合作的挑战，大规模丰度资料仍然有限。我们报告了整个北太平洋在北方夏季（7月至9月）的第一次大规模丰度估计，使用基于船舶的线样观测数据，这些数据是通过2008-2014年和2017-2022年两个时期的长期国内和国际研究项目收集的。在第二个期间，调查区域包括白令海。假设g(0)的探测概率为1，北太平洋西部和东部第一时期的丰度分别为6633 （CV = 0.453）和31835 （CV = 0.264）个个体；第二阶段北太平洋西部、东部和白令海分别为4405 （CV = 0.241）、37297 （CV = 0.181）和9885 （CV = 0.201）。考虑到g(0)校正，整个北太平洋在第一期和第二期的校正丰度估计分别为44,523 （CV = 0.234）和45,344 （CV = 0.167）。对于白令海，第二个时期的估计数为10,234 （CV = 0.202）。这些新的估计可用于北太平洋该物种的保护和管理目的。

{"title":"First large-scale abundance estimates of fin whales (Balaenoptera physalus) in the North Pacific: Implications for management","authors":"Megumi Takahashi, Koji Matsuoka, Takashi Hakamada","doi":"10.1016/j.seares.2025.102647","DOIUrl":"10.1016/j.seares.2025.102647","url":null,"abstract":"<div><div>The fin whale (<em>Balaenoptera physalus</em>) was exploited by global commercial whaling well beyond sustainable population levels in most regions since the early 1870s. In the post-whaling era, fin whale populations in several regions may have stabilized or begun recovering from historical depletion. However, large-scale abundance information has remained limited owing to the high operating costs of surveys and the challenges of international cooperation. We report the first large-scale abundance estimates for the entire North Pacific during the boreal summer (July to September) using vessel-based line transect sighting data collected through long-term domestic and international research programs over two periods: 2008–2014 and 2017–2022. During the second period, the survey area included the Bering Sea. Assuming a detection probability on the trackline <em>g</em>(0) of 1, the abundance estimates were 6,633 (CV = 0.453) and 31,835 (CV = 0.264) individuals for the western and eastern North Pacific, respectively, in the first period; and 4,405 (CV = 0.241), 37,297 (CV = 0.181), and 9,885 (CV = 0.201) for the western and eastern North Pacific and Bering Sea, respectively, in the second period. Considering g(0) corrections, the corrected abundance estimates for the entire North Pacific were 44,523 (CV = 0.234) and 45,344 (CV = 0.167) in the first and second periods, respectively. For the Bering Sea, the estimate was 10,234 (CV = 0.202) in the second period. These new estimates are available for the conservation and management purposes of this species in the North Pacific.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102647"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Beachface steepness modulates erosion but not recovery: Multi-decadal spatiotemporal shoreline evidence across 390 transects 滩面陡度调节侵蚀而非恢复：390个样带的多年时空海岸线证据

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2025-12-01 DOI: 10.1016/j.seares.2025.102644

Ahmet Durap

Beachface steepness is widely thought to modulate storm cut, long-term shoreline trend, and post-event recovery, but multi-decadal, transect-scale evidence is scarce. In this study, it was quantified how beachface slope relates to (i) event-scale shoreline retreat, (ii) recovery time, and (iii) net multi-decadal shoreline movement. Two sites (IDs aus0032 and aus0033) comprising 390 cross-shore transects and 194,867 shoreline positions from 1987 to 05–22 to 2025-05-06. Mean slopes: 0.053 (aus0032) and 0.051 (aus0033); slope ranges: 0.045–0.080 and 0.030–0.185. Long-term linear trends span 0.13 → 0.94 m yr⁻¹ (all 87 transects accreting) at aus0032 and − 22.86 → +5.91 m yr⁻¹ at aus0033 (210 accreting, 91 eroding, 2 near-zero). Time series were resampled monthly and quality-controlled. Erosive events were flagged when month-to-month shoreline change ≤ −5 m. Recovery time was the months required to return to within 1 m of the pre-event level (pre-event window = 3 months; search window = 24 months). Associations between slope and (a) retreat magnitude and (b) recovery time were tested using Spearman rank correlation and OLS with robust (HC1) errors; slope–trend associations were also evaluated. Steeper beachfaces experienced smaller typical monthly retreats. Spearman ρ for slope vs median negative monthly change was 0.25 (p = 0.0206) at aus0032, 0.39 (p = 2.7 × 10⁻¹²) at aus0033, and 0.32 overall (p = 8.3 × 10⁻¹¹). OLS effect sizes indicate that a 0.01 increase in slope reduced (made less negative) the median retreat by ∼0.31 m (aus0032) and ∼ 0.21 m (aus0033). Severe retreats (5th percentile) also weakened with slope: ∼0.64 m and ∼ 0.23 m per 0.01 slope at aus0032 and aus0033, respectively (both p < 0.02). Typical monthly negatives centred near −5.7 m (aus0032) and − 5.4 m (aus0033); 5th-percentile shocks were ∼ −16 m at both sites. Median recovery times were 5 months (aus0032; n = 8115 events) and 6 months (aus0033; n = 24,649), with 90th percentiles 17–18 months. Recovery time showed no robust monotonic relationship with slope (all |ρ| ≤ 0.07, p ≥ 0.15). Slope had little explanatory power for multi-decadal trend across all transects (Pearson r ≈ −0.08; Spearman ρ ≈ 0.10, p = 0.044 overall), with site-specific nuance (weak negative monotonic association at aus0032; none at aus0033). Beachface steepness buffers monthly-scale retreat but does not reliably predict decadal accretion/erosion or post-event recovery time. Half of events recover within ∼6 months, yet tail events can take >1.5 years. Management should treat slope as a short-term resilience indicator, while decadal shoreline change and recovery pace likely depend more on alongshore sediment supply, nearshore morphology, and forcing histories.

滩面陡度被广泛认为可以调节风暴切割、长期海岸线趋势和事件后恢复，但几十年的、横断面尺度的证据很少。在这项研究中，量化了滩面坡度与(i)事件尺度的海岸线退缩，（ii）恢复时间和（iii）多年来的净海岸线运动的关系。两个地点（编号aus0032及aus0033）由1987年至05-22至2025-05-06期间，包括390个跨海岸样带及194,867个海岸线位置。平均斜率：0.053 （aus0032）和0.051 (aus0033)；坡度范围：0.045-0.080和0.030-0.185。在aus0032和aus0033的长期线性趋势跨度为0.13→0.94 m yr - 1（全部87个断面都是增生）和- 22.86→+5.91 m yr - 1（210个断面是增生，91个断面是侵蚀，2个接近于零）。时间序列每月重新采样并进行质量控制。当海岸线逐月变化≤- 5 m时，侵蚀事件被标记。恢复时间为恢复到事件前水平1 m范围内所需的月份（事件前窗口= 3个月；搜索窗口= 24个月）。坡度与(a)后退幅度和(b)恢复时间之间的关联使用Spearman秩相关和OLS进行检验，OLS具有鲁棒性（HC1）误差；斜率趋势关联也进行了评估。陡峭的海滩面经历了较小的典型月度撤退。斜率与中位数负月变化的Spearman ρ在aus0032时为0.25 (p = 0.0206)，在aus0033时为0.39 (p = 2.7 × 10−12)，总体为0.32 （p = 8.3 × 10−11）。OLS效应大小表明，坡度增加0.01会使中位后退减少（不那么负）~ 0.31 m （aus0032）和~ 0.21 m （aus0033）。严重退退（第5百分位）也随坡度而减弱：在aus0032和aus0033分别为每0.01个坡度0.64 m和0.23 m （p < 0.02）。典型的月负集中在- 5.7 m （aus0032）和- 5.4 m （aus0033）附近；两个部位的第5百分位冲击均为−16 m。中位恢复时间为5个月（aus0032, n = 8115）和6个月（aus0033, n = 24,649），第90百分位数为17-18个月。恢复时间与斜率无显著单调关系（均为|ρ|≤0.07,p≥0.15）。斜率对所有样带的多年代际趋势几乎没有解释力（Pearson r≈−0.08;Spearman ρ≈0.10，总体p = 0.044），具有位点特异性的细微差别（在aus0032处呈弱负单调关联，在aus0033处无关联）。滩面陡度缓冲了月尺度的退缩，但不能可靠地预测年代际增生/侵蚀或事件后恢复时间。一半的事件在6个月内恢复，而尾事件可能需要1.5年。管理层应将坡度视为短期恢复力指标，而年代际海岸线变化和恢复速度可能更多地取决于沿岸沉积物供应、近岸形态和强迫历史。

{"title":"Beachface steepness modulates erosion but not recovery: Multi-decadal spatiotemporal shoreline evidence across 390 transects","authors":"Ahmet Durap","doi":"10.1016/j.seares.2025.102644","DOIUrl":"10.1016/j.seares.2025.102644","url":null,"abstract":"<div><div>Beachface steepness is widely thought to modulate storm cut, long-term shoreline trend, and post-event recovery, but multi-decadal, transect-scale evidence is scarce. In this study, it was quantified how beachface slope relates to (i) event-scale shoreline retreat, (ii) recovery time, and (iii) net multi-decadal shoreline movement. Two sites (IDs aus0032 and aus0033) comprising 390 cross-shore transects and 194,867 shoreline positions from 1987 to 05–22 to 2025-05-06. Mean slopes: 0.053 (aus0032) and 0.051 (aus0033); slope ranges: 0.045–0.080 and 0.030–0.185. Long-term linear trends span 0.13 → 0.94 m yr<sup>−1</sup> (all 87 transects accreting) at aus0032 and − 22.86 → +5.91 m yr<sup>−1</sup> at aus0033 (210 accreting, 91 eroding, 2 near-zero). Time series were resampled monthly and quality-controlled. Erosive events were flagged when month-to-month shoreline change ≤ −5 m. Recovery time was the months required to return to within 1 m of the pre-event level (pre-event window = 3 months; search window = 24 months). Associations between slope and (a) retreat magnitude and (b) recovery time were tested using Spearman rank correlation and OLS with robust (HC1) errors; slope–trend associations were also evaluated. Steeper beachfaces experienced smaller typical monthly retreats. Spearman ρ for slope vs median negative monthly change was 0.25 (<em>p</em> = 0.0206) at aus0032, 0.39 (<em>p</em> = 2.7 × 10<sup>−12</sup>) at aus0033, and 0.32 overall (<em>p</em> = 8.3 × 10<sup>−11</sup>). OLS effect sizes indicate that a 0.01 increase in slope reduced (made less negative) the median retreat by ∼0.31 m (aus0032) and ∼ 0.21 m (aus0033). Severe retreats (5th percentile) also weakened with slope: ∼0.64 m and ∼ 0.23 m per 0.01 slope at aus0032 and aus0033, respectively (both <em>p</em> < 0.02). Typical monthly negatives centred near −5.7 m (aus0032) and − 5.4 m (aus0033); 5th-percentile shocks were ∼ −16 m at both sites. Median recovery times were 5 months (aus0032; <em>n</em> = 8115 events) and 6 months (aus0033; <em>n</em> = 24,649), with 90th percentiles 17–18 months. Recovery time showed no robust monotonic relationship with slope (all |ρ| ≤ 0.07, <em>p</em> ≥ 0.15). Slope had little explanatory power for multi-decadal trend across all transects (Pearson r ≈ −0.08; Spearman ρ ≈ 0.10, <em>p</em> = 0.044 overall), with site-specific nuance (weak negative monotonic association at aus0032; none at aus0033). Beachface steepness buffers monthly-scale retreat but does not reliably predict decadal accretion/erosion or post-event recovery time. Half of events recover within ∼6 months, yet tail events can take >1.5 years. Management should treat slope as a short-term resilience indicator, while decadal shoreline change and recovery pace likely depend more on alongshore sediment supply, nearshore morphology, and forcing histories.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102644"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variation in ecosystem services within biogenic reefs: The role of reef-building species under distinct hydrodynamic conditions 生物礁内生态系统服务的变化：不同水动力条件下造礁物种的作用

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2025-12-01 DOI: 10.1016/j.seares.2025.102650

Rémi Dupont , Alexia Semeraro , Brecht Stechele , Tomas Sterckx , Gert Van Hoey , Thomas Vandorpe , Katrien Van der Biest

To enhance the climate resilience of coastlines, measures are being implemented to protect and restore coastal ecosystems, such as biogenic reefs and dunes. These measures, known as Nature-based Solutions (NbS), provide protection against storms, coastal erosion, and flooding. They are also recognised for increasing biodiversity and delivering a range of ecosystem services (ES). This study investigated the ES provided by biogenic reefs composed of two reef-building species (Mytilus edulis and Lanice conchilega) under distinct hydrodynamic conditions. Three ES were assessed at two sites in the Belgian part of the North Sea: (1) coastal protection, (2) carbon sequestration, and (3) water quality regulation. The two sites have different hydrodynamic conditions due to their relative locations in relation to local sandbanks, making one site more exposed and the other more sheltered. The ES were quantified and monetised using in-situ measurements and literature data based on the SUstainable Marine Ecosystem Services (SUMES) model. The results suggest that the provision of ES in biogenic reefs is determined by multiple factors, including environmental conditions (e.g. hydrodynamics) and reef-building species. (1) Sediment accumulation was only observed under low hydrodynamic conditions, due to the higher settlement success of M. edulis and the presence of L. conchilega. (2) M. edulis “produces” carbon under both low and high hydrodynamic conditions, due to high respiration and biocalcification rates. However, low hydrodynamic conditions are more conducive to carbon burial, thus enhancing carbon sequestration. (3) M. edulis patches exhibited higher denitrification rates under low hydrodynamic conditions than under high hydrodynamic conditions or in L. conchilega patches, due to divergent macrobenthic functional diversity. In conclusion, the level of ES provision is determined by location and associated environmental conditions, as well as temporal and spatial variation in biogenic reefs and the physiological characteristics of reef builders. Therefore, both aspects need to be carefully considered when planning coastal protection measures and determining the provision of ES. Finally, when implementing NbS along high-energy coastlines, sheltered sites should be prioritised.

为了增强海岸线的气候适应能力，正在采取措施保护和恢复沿海生态系统，如生物礁和沙丘。这些措施被称为基于自然的解决方案（NbS），可以抵御风暴、海岸侵蚀和洪水。它们还因增加生物多样性和提供一系列生态系统服务（ES）而得到认可。研究了由两种造礁物种（Mytilus edulis和Lanice conchilega）组成的生物礁在不同水动力条件下提供的ES。在北海比利时部分的两个地点对三个ES进行了评估：(1)海岸保护，(2)碳封存和(3)水质调节。这两个地点由于与当地沙洲的相对位置而具有不同的水动力条件，使一个地点更暴露，另一个地点更隐蔽。利用基于可持续海洋生态系统服务（SUMES）模型的原位测量和文献数据，对ES进行了量化和货币化。结果表明，生物礁中ES的供应受环境条件（如水动力）和造礁物种等多种因素的影响。(1)在低水动力条件下，由于毛蕊草的沉降成功率较高，以及松茸草的存在，只能观察到沉积物的堆积。(2)由于高呼吸和生物钙化速率，毛竹在低和高水动力条件下都“产生”碳。而低水动力条件更有利于碳埋藏，从而增强碳固存。(3)由于大型底栖生物功能多样性的差异，低水动力条件下毛竹斑块的反硝化速率高于高水动力条件下或松茸斑块。综上所述，ES的供应水平取决于地理位置和相关环境条件，以及生物礁的时空变化和造礁者的生理特征。因此，在规划海岸保护措施和决定是否提供ES时，需要仔细考虑这两个方面。最后，在沿高能量海岸线实施国家统计局时，应优先考虑有遮蔽的地点。

{"title":"Variation in ecosystem services within biogenic reefs: The role of reef-building species under distinct hydrodynamic conditions","authors":"Rémi Dupont , Alexia Semeraro , Brecht Stechele , Tomas Sterckx , Gert Van Hoey , Thomas Vandorpe , Katrien Van der Biest","doi":"10.1016/j.seares.2025.102650","DOIUrl":"10.1016/j.seares.2025.102650","url":null,"abstract":"<div><div>To enhance the climate resilience of coastlines, measures are being implemented to protect and restore coastal ecosystems, such as biogenic reefs and dunes. These measures, known as Nature-based Solutions (NbS), provide protection against storms, coastal erosion, and flooding. They are also recognised for increasing biodiversity and delivering a range of ecosystem services (ES). This study investigated the ES provided by biogenic reefs composed of two reef-building species (<em>Mytilus edulis</em> and <em>Lanice conchilega</em>) under distinct hydrodynamic conditions. Three ES were assessed at two sites in the Belgian part of the North Sea: (1) coastal protection, (2) carbon sequestration, and (3) water quality regulation. The two sites have different hydrodynamic conditions due to their relative locations in relation to local sandbanks, making one site more exposed and the other more sheltered. The ES were quantified and monetised using in-situ measurements and literature data based on the SUstainable Marine Ecosystem Services (SUMES) model. The results suggest that the provision of ES in biogenic reefs is determined by multiple factors, including environmental conditions (e.g. hydrodynamics) and reef-building species. (1) Sediment accumulation was only observed under low hydrodynamic conditions, due to the higher settlement success of <em>M. edulis</em> and the presence of <em>L. conchilega</em>. (2) <em>M. edulis</em> “produces” carbon under both low and high hydrodynamic conditions, due to high respiration and biocalcification rates. However, low hydrodynamic conditions are more conducive to carbon burial, thus enhancing carbon sequestration. (3) <em>M. edulis</em> patches exhibited higher denitrification rates under low hydrodynamic conditions than under high hydrodynamic conditions or in <em>L. conchilega</em> patches, due to divergent macrobenthic functional diversity. In conclusion, the level of ES provision is determined by location and associated environmental conditions, as well as temporal and spatial variation in biogenic reefs and the physiological characteristics of reef builders. Therefore, both aspects need to be carefully considered when planning coastal protection measures and determining the provision of ES. Finally, when implementing NbS along high-energy coastlines, sheltered sites should be prioritised.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102650"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “Optimized cleaning and centrifugation of Japanese precious corals for enhanced sclerite classification and chemical profiling” [Journal of Sea Research 208 (2025) 102639] “优化日本珍贵珊瑚的清洁和离心，以加强硬石分类和化学分析”的勘误[海洋研究杂志208 (2025)102639]

IF 2.9 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research

Pub Date : 2025-12-01 DOI: 10.1016/j.seares.2025.102648

Beatrice Coda , Asami Suzuki Mashio , Tenyu Tamura , Aya Mamorita , Kuo Hong Wong , Nozomu Iwasaki , Hiroshi Hasegawa

引用次数: 0