Journal of Sea Research最新文献

{"title":"Long-term changes in the subtidal macrozoobenthos of the western Dutch Wadden Sea","authors":"Andreas M. Waser ,&nbsp;Rob Dekker ,&nbsp;Jan Drent ,&nbsp;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}

{"title":"Dynamic ecological compensation and delayed strategies in China's coordinated land-sea governance: An evolutionary game analysis","authors":"An Yan ,&nbsp;Hu Tian ,&nbsp;Qiaorong Yin ,&nbsp;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}

{"title":"Contrasting roles of Changjiang diluted water on phytoplankton dynamics near a temperate volcanic island: Implications for the island mass effect","authors":"Dongyoung Kim ,&nbsp;Jung Hyun Kwak ,&nbsp;Hyun-Sil Kang ,&nbsp;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}

{"title":"First large-scale abundance estimates of fin whales (Balaenoptera physalus) in the North Pacific: Implications for management","authors":"Megumi Takahashi,&nbsp;Koji Matsuoka,&nbsp;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}

{"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⁻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 (<em>p</em> = 0.0206) at aus0032, 0.39 (<em>p</em> = 2.7 × 10⁻¹²) at aus0033, and 0.32 overall (<em>p</em> = 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 <em>p</em> &lt; 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 &gt;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}

{"title":"Variation in ecosystem services within biogenic reefs: The role of reef-building species under distinct hydrodynamic conditions","authors":"Rémi Dupont ,&nbsp;Alexia Semeraro ,&nbsp;Brecht Stechele ,&nbsp;Tomas Sterckx ,&nbsp;Gert Van Hoey ,&nbsp;Thomas Vandorpe ,&nbsp;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}

{"title":"Corrigendum to “Optimized cleaning and centrifugation of Japanese precious corals for enhanced sclerite classification and chemical profiling” [Journal of Sea Research 208 (2025) 102639]","authors":"Beatrice Coda ,&nbsp;Asami Suzuki Mashio ,&nbsp;Tenyu Tamura ,&nbsp;Aya Mamorita ,&nbsp;Kuo Hong Wong ,&nbsp;Nozomu Iwasaki ,&nbsp;Hiroshi Hasegawa","doi":"10.1016/j.seares.2025.102648","DOIUrl":"10.1016/j.seares.2025.102648","url":null,"abstract":"","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102648"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789909","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}

{"title":"Historical overview on the use of ballast water in shipping","authors":"Stephan Gollasch","doi":"10.1016/j.seares.2025.102649","DOIUrl":"10.1016/j.seares.2025.102649","url":null,"abstract":"<div><div>Since more than 100 years scientists assumed that ballast water of vessels is one of the major introduction pathways of non-indigenous species. Although this assumption was proven as true due to several ballast water sampling studies, it remained unclear for long who invented to use water as ballast in shipping. In the early days, and phasing out solid ballast in the 1850/60s, different ballasting ways were tried including to store water in bags, barrels and boxes to ballast vessels.</div><div>A comprehensive research of historical maritime literature and databases revealed the first naval architects who described the use of water as ballast.</div><div>Using ballast water, instead of solid ballast, was easy to handle and time-efficient and so-called wells filled with water were proposed to be used to ballast vessels. Those wells were created by properly sealed wooden vessel compartments and the entire patented arrangement was called “water ballast apparatus”.</div><div>However, with the development of double hulled iron ships with cellular compartments along the hull, ballast water tanks were invented and patented first by the British naval architect Ralph Rewcastle in 1827. Other key naval architects and engineers to develop this concept were listed and the first vessel on which dedicated ballast water tanks were installed was identified as the coal-carrier “Q.E.D.”, launched in 1844.</div><div><em>Policy implications.</em> This invention did not only result in major naval architecture improvements, but it prompted ballast water mediated species introductions by large.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102649"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617749","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}

{"title":"Corrigendum to The EMSO-Azores deep-sea observatory: 15 years of multidisciplinary studies of the lucky strike hydrothermal system, from sub-seafloor to the water column [Journal of Sea Research 207 (2025) 102625]","authors":"M. Matabos ,&nbsp;M. Cannat ,&nbsp;V. Ballu ,&nbsp;T. Barreyre ,&nbsp;J. Blandin ,&nbsp;A. Castillo ,&nbsp;C. Cathalot ,&nbsp;V. Chavagnac ,&nbsp;N.C. Chu ,&nbsp;A. Colaço ,&nbsp;W. Crawford ,&nbsp;J. Escartin ,&nbsp;B. Ferron ,&nbsp;F. Fontaine ,&nbsp;L. Gautier ,&nbsp;A. Godfroy ,&nbsp;A. Laes-Huon ,&nbsp;N. Lanteri ,&nbsp;H. Leau ,&nbsp;J. Legrand ,&nbsp;P.M. Sarradin","doi":"10.1016/j.seares.2025.102632","DOIUrl":"10.1016/j.seares.2025.102632","url":null,"abstract":"","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102632"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789907","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}

{"title":"Corrigendum to “Distribution of Ulva prolifera, the dominant species in green tides along the Jiangsu Province coast in the southern Yellow Sea, China” [J. Sea Res. 196 (2023) 102436]","authors":"Zhangyi Xia ,&nbsp;Xiaoli Cao ,&nbsp;Shuang Li ,&nbsp;Jiaxing Cao ,&nbsp;Yichao Tong ,&nbsp;Yuqing Sun ,&nbsp;Jinlin Liu ,&nbsp;Shuang Zhao ,&nbsp;Qianwen Cui ,&nbsp;Yinqing Zeng ,&nbsp;Zehua Chen ,&nbsp;Peimin He ,&nbsp;Jianheng Zhang","doi":"10.1016/j.seares.2025.102643","DOIUrl":"10.1016/j.seares.2025.102643","url":null,"abstract":"","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102643"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789910","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}