Anthropocene Coasts最新文献

{"title":"Coastal bathymetry analysis of Saleh Bay Indonesia, using the band ratio method on Sentinel-2 Imagery to support coral reef conservation","authors":"Nisrina Huwaida,&nbsp;Yulius Yulius,&nbsp;Ayang Armelita Rosalia,&nbsp;Taslim Arifin,&nbsp;Rinny Rahmania,&nbsp;Aprizon Putra,&nbsp;Muhammad Ramdhan,&nbsp;Hafidzuddin Fihrin","doi":"10.1007/s44218-026-00146-9","DOIUrl":"10.1007/s44218-026-00146-9","url":null,"abstract":"<div><p>Accurate information on shallow water bathymetry and coral reef distribution is essential for coastal management in tropical marine environments. This study evaluates Sentinel-2 imagery for mapping bathymetry and coral reef features in Saleh Bay, Indonesia, using the Stumpf band ratio algorithm, the Lyzenga method, and datasets from the Allen Coral Atlas. Bathymetric estimates derived from Sentinel-2 imagery using the Stumpf algorithm were validated against reference depth data from the Indonesian National Bathymetry dataset (BATNAS), while reef related classes were compared with coral reef extent and geomorphic maps from the Allen Coral Atlas. The Stumpf based model showed strong agreement with BATNAS reference depth data, achieving an R² of 0.79 and an RMSE of 1.73 m. Depth estimates were obtained to approximately 27 m under the prevailing optical water conditions of the study area. The comparison of reef datasets reveals complementary spatial patterns. The Allen Coral Atlas delineates narrow reef zones along coastlines and island margins, whereas the Lyzenga based classification identifies broader shallow water areas and is more sensitive to local variations in benthic substrates. Results indicate that coral reef distribution in Saleh Bay is closely associated with shallow coastal environments, particularly at depths shallower than 10 m, including reef flats, island platforms, and upper reef slope zones. Integrating satellite derived bathymetry, geomorphic reef data, and benthic classification improves the interpretation of coral reef spatial patterns in tropical coastal waters. This approach supports marine spatial planning, habitat monitoring, and coral reef conservation in data limited regions.</p></div>","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-026-00146-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spartina alterniflora in coastal wetlands: ecological impacts, management trade-offs, and future pathways","authors":"Hu Chang,&nbsp;Ping Zuo,&nbsp;Shan-Shan Chen,&nbsp;Tong-Xin Zheng,&nbsp;Jia-Hui Liang,&nbsp;Jia-Hui Tian,&nbsp;Pei Qin","doi":"10.1007/s44218-026-00142-z","DOIUrl":"10.1007/s44218-026-00142-z","url":null,"abstract":"&lt;div&gt;&lt;p&gt;&lt;i&gt;Spartina alterniflora&lt;/i&gt;, one of the most widespread invasive salt-marsh plants globally, has profoundly altered the structure and functioning of coastal wetlands through its influences on sediment dynamics, biodiversity, biogeochemical cycling, and ecosystem resilience. However, the ecological consequences and management implications of its invasion remain highly controversial because its impacts vary substantially across wetland types, climatic regions, and invasion stages. To clarify the development and emerging directions of &lt;i&gt;S. alterniflora&lt;/i&gt; research, this study provides a systematic review of &lt;i&gt;S. alterniflora&lt;/i&gt; research, highlighting advances, challenges, and prospects in this field. Bibliometric and quantitative methods assessed research trends, while synthesized ecological findings highlight &lt;i&gt;S. alterniflora&lt;/i&gt;’s impacts, such as increased soil carbon sequestration and biodiversity shifts. Literature spanning 1929–2026 from the Web of Science database and Chinese-funded projects recorded in the Fun Research database (1987–2026) formed the basis of the analysis. Bibliometric analysis, keyword co-occurrence clustering, and multiple correspondence analysis were applied to examine knowledge structure, thematic evolution, and research trends. The results demonstrate that &lt;i&gt;S. alterniflora&lt;/i&gt; research has evolved from early studies focusing on plant growth, invasion ecology, and salt-marsh dynamics toward increasingly interdisciplinary investigations emphasizing blue carbon, climate change interactions, ecosystem resilience, and adaptive management. Three major thematic domains were identified: invasion ecology and biodiversity responses, biogeochemical cycling and blue carbon processes, and climate-related vulnerability and adaptation research. The ecological impacts of &lt;i&gt;S. alterniflora&lt;/i&gt; were found to be strongly context-dependent across salt marshes, mangrove ecosystems, and tidal flats, generating both ecosystem benefits, such as shoreline stabilization and sediment accretion, and ecological risks including biodiversity loss, habitat homogenization, and altered trophic interactions. This review further highlights substantial uncertainties in evaluating the net climatic effects of &lt;i&gt;S. alterniflora&lt;/i&gt; invasion due to spatial heterogeneity, greenhouse gas offsets, microbial feedbacks, and limitations in current blue carbon accounting frameworks. Recent advances in remote sensing, unmanned aerial vehicles, machine learning, and molecular ecology are rapidly improving the capacity to monitor invasion dynamics and assess ecosystem responses across multiple spatial and temporal scales. This study emphasizes that &lt;i&gt;S. alterniflora&lt;/i&gt; should not be viewed solely as either a harmful invasive species or a beneficial ecosystem engineer, but rather as a complex ecological driver embedded within coupled coastal socio-ecological systems in the Anthropocene. Future research and management should therefore adopt integrated","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-026-00142-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Linking sediment dynamics to coastal governance: Managing tourism and resilience in the Bakkhali–Fraserganj coast, West Bengal, India","authors":"Koushik Saha,&nbsp;Sayak Sarkar,&nbsp;Kalben Wanchu Bhutia,&nbsp;Antareep Nandy,&nbsp;Saumik Samanta","doi":"10.1007/s44218-026-00140-1","DOIUrl":"10.1007/s44218-026-00140-1","url":null,"abstract":"<div><p>The Bakkhali–Fraserganj coast, in the low-lying deltaic setting of southern West Bengal, is experiencing transformative change under the compound pressures of tourism development, climate variability, and sea-level rise. This research brings together high-resolution sedimentological analysis covering granulometric analysis, C–M based transport assessment, and multivariate zoning with an evaluation of governance issues under India's Coastal Regulation Zone (CRZ) regime. Field and laboratory data indicate unambiguous sediment regimes in four zones, with tourism-intensive areas (Zones A and C) exhibiting relatavily poorer sorting (σ₁ ≈ 0.68 ϕ), and negative skewness, indicating sediment compaction, dune degradation, and disturbed aeolian corridors. Relatively pristine areas (Zones B and D) have well-sorted sands and intact sediment pathways. High-resolution satellite imagery (2005–2023) indicates escalating incursion of hotels and hard infrastructure into CRZ-I dune swaths, and exceeding carrying capacity (&gt; 2,260 tourists/day) and vehicular penetration onto backshore surfaces. These observations underscore a governance disconnect among legal safeguards under the West Bengal Coastal Zone Management Plan and actual enforcement. Converting the sediment record into management prescriptions, we recommend zone-by-zone interventions such as strict CRZ regulation, tourist quotas, infrastructure setback lines, and dune protection measures. By establishing a direct relationship between physical coastal processes and institutions, this study provides a framework for balancing tourism growth and sedimentary resilience in the Global South, congruent with the goals of integrated coastal zone management and climate adaptation initiatives.</p></div>","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-026-00140-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Occurrence, abundance, and characteristics of microplastics in marine fish from the Cox’s Bazar coast, Bay of Bengal","authors":"Saifuddin Rana,&nbsp;Mohammad Shakil Khan,&nbsp;Md. Tanvir Hossain Tushar,&nbsp;Ifthekher Ahmed Shakib,&nbsp;Zobair Alam Sunny,&nbsp;Samson Nahar Sumi,&nbsp;Sourav Chowdhury,&nbsp;Israt Jahan Monmon,&nbsp;Shahida Arfine Shimul,&nbsp;Sk. Ahmad Al Nahid","doi":"10.1007/s44218-026-00141-0","DOIUrl":"10.1007/s44218-026-00141-0","url":null,"abstract":"<div><p>Microplastic contamination in marine ecosystems has emerged as a growing environmental concern, yet information on commercially important fish species from the Bay of Bengal remains limited. This study investigated the occurrence, abundance, and characteristics of microplastics in the gill and gastrointestinal tract (GIT) tissues of eight widely consumed marine fish species collected from the Cox’s Bazar coast of Bangladesh. A total of 40 specimens were analyzed using alkaline digestion, microscopic identification, and polymer characterization via ATR-FTIR spectroscopy. Microplastics were detected in 77.5% of gill samples and 82.5% of GIT samples, with a total of 172 particles identified. The mean abundance was 2.55 ± 0.21 items per sample in gills and 2.82 ± 0.37 items per sample in GIT. Fibers were the dominant morphotype (91.86%), followed by fragments (8.14%). Blue-colored particles were most prevalent (40.69%), with particles in the 501–1500 µm (36.62%) and 151–500 µm (30.81%) size classes being the most abundant. ATR-FTIR analysis of a representative subset of particles revealed that polyethylene (39.53%) and polypropylene (30.23%) were the most common materials, with polyester also contributing notably (18.60%). Microplastic abundance showed no significant relationship with fish morphometric parameters. Variations among species suggested possible influences of feeding behavior and habitat, although these observations should be considered exploratory because of the limited sample size. The predominance of fibrous particles and common packaging-related polymers suggests multiple anthropogenic sources, including fisheries and domestic waste. These findings emphasize the need for improved waste management, reduction of plastic use in fisheries, and stricter regulation of synthetic discharges to mitigate microplastic contamination in coastal marine environments of Bangladesh.</p></div>","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-026-00141-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lessons from a large-scale evacuation on a small volcanic island: community resilience and inter-island mobility during the 1980 Gamalama eruption","authors":"Agung Hidayat,&nbsp;Diah Ainurrohmah,&nbsp;Suryanto Suryanto,&nbsp;Rahning Utomowati,&nbsp;Albertus Erico Jerry Krisna Nugroho","doi":"10.1007/s44218-026-00144-x","DOIUrl":"10.1007/s44218-026-00144-x","url":null,"abstract":"<div><p>Small volcanic islands face heightened disaster risks due to limited land area, dense coastal settlements, and restricted evacuation options. This study examines the September 1980 eruption of Mount Gamalama on Ternate Island, eastern Indonesia, to analyse evacuation dynamics, community responses, and crisis management in a small-island context with limited institutional capacity. A mixed-methods approach was applied, combining archival eruption records, semi-structured interviews with eyewitnesses of the 1980 eruption, and a questionnaire-based survey of currently exposed communities to assess contemporary risk perception, evacuation behaviour, and the persistence of disaster memory. The eruption produced widespread ashfall reaching up to 15 cm across the island and triggered the evacuation of more than 50,000 residents to neighbouring islands, particularly Tidore, Halmahera, and Hiri. Despite the eruption’s severity and prolonged duration, no fatalities were recorded. The findings show that social capital, kinship networks, trusted local leadership, and inter-island mobility strongly influenced evacuation effectiveness, compensating for the absence of advanced monitoring systems and limited infrastructure. Cultural expressions and shared disaster memory further reinforced social cohesion and adaptive behaviour across generations. The Gamalama case demonstrates that disaster risk on small volcanic islands is shaped by the interaction between physical hazards and socially embedded response mechanisms. These findings highlight the importance of community-led evacuation, informal coordination, and intergenerational disaster memory in strengthening resilience in coastal and island environments under Anthropocene conditions.</p></div>","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-026-00144-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatiotemporal dynamics of chlorophyll-a in Pekalongan coastal waters, Indonesia, derived from sentinel-2 imagery","authors":"Muhammad Nur Al Fajrin,&nbsp;Lilik Maslukah,&nbsp;Aris Ismanto,&nbsp;Muhammad Zainuri,&nbsp;Anindya Wirasatriya,&nbsp;Ulung Jantama Wisha,&nbsp;Muhammad Shulhan Jihadi","doi":"10.1007/s44218-026-00145-w","DOIUrl":"10.1007/s44218-026-00145-w","url":null,"abstract":"<div><p>Chlorophyll-a is a key indicator of primary productivity and an essential parameter for assessing estuarine water quality. This study developed an empirical algorithm for estimating chlorophyll-a concentration from Sentinel-2 imagery and investigated the influence of meteorological and hydrographic factors on chlorophyll-a variability in Pekalongan Waters, Central Java, Indonesia, during 2020–2024. In situ observations were conducted in the estuarine areas of the Mrican, Sengkarang, and Loji Rivers during the first transitional season and the Southeast Monsoon period. To minimize tidal effects, field sampling and satellite acquisition were performed under comparable tidal conditions (flood to ebb). Among the tested models, an exponential regression based on the green-to-red band ratio demonstrated the best performance (R² = 0.543, RMSE = 1.284 µg/L, bias = 0.303 µg/L). The developed algorithm successfully captured the spatial distribution of chlorophyll-a, revealing consistently higher concentrations in estuarine areas (1.6–11.4 µg/L) than in offshore waters (0.2–7.0 µg/L), indicating strong terrestrial influence. Correlation analysis showed that chlorophyll-a concentration was negatively associated with wind speed (r = − 0.518) and sunshine duration (r = − 0.550), suggesting the influence of vertical mixing and light-related constraints on phytoplankton growth, whereas rainfall exhibited a strong positive relationship. River discharge showed only a moderate correlation, indicating that chlorophyll-a dynamics are controlled by multiple interacting environmental drivers. Overall, chlorophyll-a variability in Pekalongan Waters is shaped by the interaction of terrestrial inputs, meteorological forcing, and physical oceanographic processes. The proposed algorithm provides an effective approach for chlorophyll-a monitoring in tropical coastal waters.</p></div>","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-026-00145-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mangrove social-ecological system of Batan, Aklan, Philippines","authors":"Johann Stiepani,&nbsp;Rosemarie Pacis,&nbsp;Resurreccion Sadaba","doi":"10.1007/s44218-026-00139-8","DOIUrl":"10.1007/s44218-026-00139-8","url":null,"abstract":"<div><p>Commodity-based land use change is a major contributor to the worldwide loss and degradation of mangrove forests. There are, however, few studies exploring the local context of mangrove loss and degradation. This is problematic since land-use change does not uniformly degrade mangroves; these impacts on social-ecological systems (SES) are contextual. For mangrove systems, this means that conservation efforts require mangrove ecological knowledge (MEK) to understand the effects of forest loss, as well as, other drivers of change on local livelihoods. This paper aims to examine the local context of mangrove forest loss by studying mangroves and their use in Batan, Philippines. The study includes two different research methods. First, mangrove vegetation was recorded in mangrove forests. Second, perceptions of local users of coastal change, desired coastal resource management, and the local use of mangrove resources were investigated in 107 household surveys across five neighbouring study sites. The vegetation survey listed a total of 12 tree species, including one endangered mangrove species <i>Camptostemon philippinensis</i>, and another mangrove species <i>Nypa fruticans</i>, which is an important material resource. Local people perceived several changes leading to the degradation of the estuary. Regarding management solutions, the interviewees advocated increased mangrove reforestation efforts, more frequent coastal waste cleanups, and coastal zoning for fisheries. Based on the findings, we conclude that even degraded mangrove ecosystems remain important for biodiversity and local livelihoods and should therefore be conserved.</p></div>","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-026-00139-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148172203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The coupling mechanism of the dual “supply-buffer” effects of farmland on regional carbon storage in China’s coastal regions","authors":"Shuchen Liu,&nbsp;Yiming Luo,&nbsp;Wenxin Xu,&nbsp;Jinghao Guo,&nbsp;Hongsong Zeng,&nbsp;Teng Wang","doi":"10.1007/s44218-026-00134-z","DOIUrl":"10.1007/s44218-026-00134-z","url":null,"abstract":"<div><p>Land use and land cover change (LUCC) has a significant impact on ecosystem stability and carbon storage capacity. However, the specific roles of different land types are still not well understood. This study examined the spatial and temporal patterns of land use changes and their effects on carbon storage in China’s rapidly urbanizing coastal regions from 1980 to 2050, including various future scenarios. The findings showed that over a 40-year period, complex land use changes led to a total loss of carbon storage equivalent to 1.22 × 10⁸ t. Among all land types, built-up land and farmland experienced the most dynamic changes. Built-up land expanded by 59,192 km², while farmland decreased by 46,653 km². Farmland emerged as a key driver of land use change, with the conversion between farmland and built-up land accounting for 79.29% of the total expansion of built-up areas. In regions with the largest changes in carbon storage (|∆_{Carbon storage}|&gt; 15,000 t), the conversion between farmland and woodland was particularly pronounced. Future scenario simulations projected a continued decline in carbon storage, with the ecological priority scenario showing the highest projected value of 139,722,841.2 × 10⁴ t by 2050. Differences in carbon storage across scenarios were mainly driven by transitions between farmland and woodland, as well as the extent of farmland being converted into built-up land. These results offer practical guidance for improving land management strategies to enhance carbon storage in coastal regions, highlighting the pivotal “supply-buffer” mechanism of farmland in mediating regional carbon budgets.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-026-00134-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alluvial fan-deltas of the Comau Fjord, North Patagonian Andean Basin (Chile): a classification proposal","authors":"María Victoria Soto,&nbsp;Nicole Antonella Lizama González,&nbsp;Joselyn Andrea Arriagada-González,&nbsp;Mateus Moriconi Prebianca,&nbsp;J. Andrew G. Cooper","doi":"10.1007/s44218-026-00137-w","DOIUrl":"10.1007/s44218-026-00137-w","url":null,"abstract":"<div><p>Fjordlands dominate Southern Chile, where deltaic river mouths are commonly found. In Comau Fjord, Northern Patagonia, we identified several previously undocumented alluvial fan-deltas within the meso-tidal estuaries. As these environments are highly sensitive to climate change, our primary objective was better describe and classify the alluvial fan-deltas in this region, focusing specifically on the Huinay River mouth. We analyzed this system using multi-decadal orbital and aerial imagery, along with daily and monthly tidal variations records, and multi-year fieldwork campaigns. Geomorphological mapping under varying tidal conditions was employed to characterize both the subaerial and subaqueous features of the fan-delta. Field surveys revealed significant alluvial activity, evidenced by active deltaic lobes with braided patterns, high sediment loads, and smaller-scale features, such as bars and channels, composed of fluvial gravels reworked by marine processes. Our results indicate that tidal currents are the primary driver of morphological reworking at the Huinay River mouth. Furthermore, we observed that glacial and snow-pluvial valley basins draining into the fjord typically develop confined fan-deltas, whereas adjacent non-glacial basins exhibit unconfined systems at their mouths. Based on these findings, we propose a new classification for the delta at the Huinay River mouth: ‘Tidally Modified Alluvial Fan-Delta.’ Further research on these dynamic landforms is needed, particularly given the ongoing environmental changes, including shifts in precipitation, sea-level rise, increasing temperatures, and direct anthropogenic landscape modifications, such as the planned extension of the \"<i>Carretera Austral</i>\" highway construction through the Comau Fjord.</p></div>","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-026-00137-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148008752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatiotemporal variability of Total Suspended Sediment (TSS) in the Banda Aceh coastal zone, Indonesia, and its environmental implications","authors":"Ulung Jantama Wisha,&nbsp;Pingkan Mayestika Afgatiani,&nbsp;Anang Dwi Purwanto,&nbsp;Koko Ondara,&nbsp;Yusuf Jati Wijaya,&nbsp;Lilik Maslukah,&nbsp;Trika Agnestasia Tarigan,&nbsp;Muhammad Zainuddin Lubis,&nbsp;Aris Ismanto","doi":"10.1007/s44218-025-00121-w","DOIUrl":"10.1007/s44218-025-00121-w","url":null,"abstract":"<div><p>Understanding the variability of Total Suspended Sediment (TSS) is essential for managing sediment-related pollution in estuarine and coastal environments. This study aimed to analyze the spatial and temporal variability of TSS along the Banda Aceh coast, Indonesia, and its extended impacts on the surrounding environment using an integrated approach that combines satellite remote sensing, hydrodynamic modeling, and multivariate statistical analysis. Satellite-derived TSS concentrations were estimated from Sentinel 2A imagery using empirical algorithms, with the green/blue band ratio (B3/B2) performing best (R² = 0.47, RMSE = 21.73 mg/L) against <i>in-situ</i> observations. Hydrodynamic simulations conducted using MIKE 21 revealed marked spatial and temporal variability in TSS distribution driven by tidal conditions and estuarine morphology. During spring tides, stronger currents (up to 0.45 m/s) facilitated widespread TSS dispersal offshore, with concentrations exceeding 250 mg/L in Ulee Lheue and Alue Naga Estuary. In contrast, neap tides resulted in slower current speeds (&lt; 0.20 m/s) and higher TSS retention near the river mouths. The Krueng Aceh Estuary exhibited more stable and lower TSS concentrations (&lt; 181 mg/L) because of its open configuration and reduced sediment trapping. Principal Component Analysis showed that the TSS was positively correlated with turbidity and chlorophyll-a, underscoring its role in controlling water clarity and nutrient dynamics. These findings demonstrate the dominant influence of tidal dynamics, anthropogenic contributions, and riverine discharge on the coastal water quality. The combined remote sensing–modeling framework offers a scalable approach for sediment monitoring and management in other vulnerable, urbanizing coastal systems.</p></div>","PeriodicalId":100098,"journal":{"name":"Anthropocene Coasts","volume":"9 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44218-025-00121-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147938594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}