Estuarine Coastal and Shelf Science最新文献

{"title":"Impact of sea surface temperature fronts on the spatial distribution of jellyfish in the northern Arabian sea","authors":"Muhsan Ali Kalhoro ,&nbsp;HaiJun Ye ,&nbsp;Chunli Liu ,&nbsp;Lixin Zhu ,&nbsp;Zhenlin Liang ,&nbsp;DanLing Tang","doi":"10.1016/j.ecss.2024.109033","DOIUrl":"10.1016/j.ecss.2024.109033","url":null,"abstract":"<div><div>Identifying the spatial distribution of species and their relationship with environmental factors is crucial for conservation and management efforts. In Pakistan, jellyfish are economically significant and serves as an important fishery resource. This study utilized both <em>in-situ</em> and satellite data to investigate the relationship between fish catch and sea surface temperature (SST) gradient magnitude (GM). Notably, an unusually high subsurface Chlorophyll <em>a</em> (Chl-a) level (∼1.5 mg/m³) was observed, significantly higher than surrounding waters (∼0.5 mgm⁻³). Additionally, on October 27 at station 6, a high SST GM of 0.097 °C km⁻¹ was recorded alongside an elevated subsurface Chl-a of 1.24 mg/m³. Low salinity levels (&lt;36.2 psμ) were detected in areas with strong frontal activity, while higher levels (&gt;36.7 psμ) were observed in the surrounding regions. Moreover, a high wind stress curl (&gt;0.4 N/m³) was noted in regions with strong SST fronts along coastal and offshore areas of Balochistan and Sindh. A strong correlation (R² = 0.987) was identified between annual fish catch and catch per unit effort (CPUE). The study revealed a significant fish catch (&gt;200 kg) along the Balochistan coast and the Indus River estuary, with the exception of one offshore catch station. Results also indicated a strong correlated (R² = 0.73, p &lt; 0.001) between SST GM and fish catch in the upper layer (&lt;50 m depth). By establishing a GM threshold at 0.06 °C km⁻¹, there was an 80% likelihood of achieving a high catch within the upper 50 m layer. These findings enhance our understanding of how SST fronts influence the spatial distribution of jellyfish and improve our ability to forecast jellyfish fishing grounds in the northern Arabian Sea.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"312 ","pages":"Article 109033"},"PeriodicalIF":2.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatiotemporal shifts and influence of environmental parameters on estuarine-dependent fishes in Texas bays","authors":"Michelle Zapp Sluis ,&nbsp;Masami Fujiwara ,&nbsp;Fernando Martinez-Andrade ,&nbsp;R.J. David Wells","doi":"10.1016/j.ecss.2024.109034","DOIUrl":"10.1016/j.ecss.2024.109034","url":null,"abstract":"<div><div>Spatiotemporal shifts are occurring for estuarine-dependent species in Texas bays. To better understand what factors are causing these shifts, a random forest classification analysis was applied to the presence-absence data for seven estuarine-dependent species collected over 38 years. Five of the species showed an increase in presence and expanded their distributions northward, while the remaining two species declined in numbers and retracted their distributions to northern bays. The dominant factor influencing the presence of these species was year, followed by distance to major bay inlet and distance to major river mouth. While these factors may not be directly related to climate change, environmental fluctuations can impact year class success and alter the parameters of inlets and river flow. Studies examining multiple environmental and spatial conditions are needed to better understand the complexity of the changes in species composition that are occurring.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"312 ","pages":"Article 109034"},"PeriodicalIF":2.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sedimentary and geomorphological evolution of a young tidal flat in the northern part of the Po delta (Italy)","authors":"Riccardo Brunetta,&nbsp;Enrico Duo,&nbsp;Paolo Ciavola","doi":"10.1016/j.ecss.2024.109019","DOIUrl":"10.1016/j.ecss.2024.109019","url":null,"abstract":"<div><div>Due to anthropic activities of the last centuries, coastal wetlands worldwide lost wide portions of salt marshes. Since these ecosystems provide fundamental services and benefits to both natural and anthropic components, the natural restoration of these habitats is becoming one of the main objectives of these days, and the opening of new connections between land and sea is becoming a highly used technique to restore portions of intertidal areas. According to recent studies based on analysis of long-term satellite imagery datasets and bathymetric surveys, the Po River Delta (Northern Italy) is currently subjected to a positive sedimentation trend and a constructive process is ongoing at the main river branches. Following an evolution similar to restoration projects, new tidal flats are building up around the tip of the delta, where agricultural fields were inundated by strong floods in the 1950s and the 1960s. This study focuses on a young tidal flat of about 8 ha, located in the Southernmost part of the Barbamarco lagoon. Sediment granulometric distribution and sedimentary pattern were investigated between May 2019 and March 2021 through coring, sediment traps, and orthophotos. The results show that the system is undergoing a progradation and an extended crevasse splay is developing. This covers the central part of the flat and it has developed from the early 2000s, due to human intervention on levees as well as river floods. The levees of the eastern channel stabilized between 2008 and 2012 thanks to vegetation growth, allowing the floods to focus in the NW direction, leading to the development of this recent feature. The presence of the crevasse splay confirms the importance of the river floods on the tidal flat formation. The calculated depositional rates suggest that sedimentation is higher during summer (average 66.89 g/m² per submersion event) and lower during winter (18.86–20.65 g/m² per submersion event). These trends are opposite to the seasonal trends observed in the literature, showing that the deposition controlled by the tide is lower compared to the river influence and suggesting that the river is the dominant factor.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"312 ","pages":"Article 109019"},"PeriodicalIF":2.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extreme heat and drought did not affect interspecific interactions between dune grasses","authors":"Carlijn Lammers ,&nbsp;Paul M.J. Berghuis ,&nbsp;Angeles G. Mayor ,&nbsp;Valérie C. Reijers ,&nbsp;Max Rietkerk ,&nbsp;Tjisse van der Heide","doi":"10.1016/j.ecss.2024.109020","DOIUrl":"10.1016/j.ecss.2024.109020","url":null,"abstract":"<div><div>The frequency of extreme climatic events, such as storm and heatwaves, is predicted to increase because of climate change. Understanding interactions between species in environmental extremes plays a vital role in predicting ecosystem resilience. In this study, we examined how heat and drought combined with interspecific interactions between pioneer dune builder sand couch (<em>Thinopyrum junceiforme</em>) and primary foredune builder marram grass (<em>Calamagrostis arenaria</em>) affected growth and survival of the latter species in an embryonic dune system. In a 4-week field experiment, we transplanted marram grass within sand couch patches or on bare sediment. This plant interaction treatment was combined with a compound heat and drought treatment that was simulated with greenhouses that inhibited rainfall and increased temperatures (average daily maximum temperature +4 °C). Results show that the presence of sand couch significantly reduced growth (i.e., formation of new shoots, shoot and root length and aboveground biomass) of marram grass. By contrast, the heat and drought treatment had no significant effects on growth or survival of marram grass, irrespective of species interactions. The neutral response suggests that even in its early establishment marram grass is highly heat and drought resistant. Since the competitive interaction between sand couch and establishing marram grass did not change under pressure of an extreme heat and drought event, we expect that these factors do not affect embryonic dune development.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"311 ","pages":"Article 109020"},"PeriodicalIF":2.6,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Turbidity estimation from an acoustic backscatter signal in a tropical coral reef system","authors":"Cesar Linton-Izquierdo ,&nbsp;David Salas-Monreal ,&nbsp;Gabriela Athie ,&nbsp;José Antolín Ake-Castillo ,&nbsp;Mark Marín-Hernandez ,&nbsp;Rocío de Guadalupe Bernal-Ramírez","doi":"10.1016/j.ecss.2024.109018","DOIUrl":"10.1016/j.ecss.2024.109018","url":null,"abstract":"<div><div>This study investigated the estimation of Nephelometric Turbidity Units (NTU) from backscatter signals in a tropical coral reef system using a 1200-kHz towed Acoustic Doppler Current Profiler (ADCP). In order to perform the estimation, simultaneous acoustic backscatter and turbidity data were collected near the surface (above the pycnocline). Simultaneously, water samples at the same depths were analyzed to determine sediment composition. The results showed that a second-degree polynomial model provided the best correlation (r = 0.69) between backscatter signals and turbidity measurements, highlighting the nonlinear relationship between acoustic signals and turbidity values obtained from optical devices. The reef's bathymetry significantly influenced the seawater turbidity, revealing the importance of physical configuration and hydrodynamic conditions in sediment distribution. From the sediment composition, it was determined that 89% of the total suspended solids are terrigenous sediments. This integrated methodological approach provides a detailed understanding of sediment dynamics, essential for the conservation and sustainable management of coral reefs around the word in a noninvasive way.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"311 ","pages":"Article 109018"},"PeriodicalIF":2.6,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluctuation asymmetry of Larimichthys polyactis otoliths from artificial and natural habitats: A study case in Haizhou Bay, China","authors":"Dechen Yi ,&nbsp;Ze Zhao ,&nbsp;Chen Wu ,&nbsp;Tao Chen ,&nbsp;Hao Shi ,&nbsp;Shuo Zhang ,&nbsp;Shike Gao","doi":"10.1016/j.ecss.2024.109015","DOIUrl":"10.1016/j.ecss.2024.109015","url":null,"abstract":"<div><div>Fluctuating asymmetry (FA) in fish otoliths is a measure of subtle, random differences between paired otoliths, indicating deviations from perfect symmetry due to environmental influences during development. It reflects variations in growth and development within aquatic environments subjected to significant environmental pressures. In our study, we examined 238 <em>Larimichthys polyactis</em> from Haizhou Bay (Jiangsu, China), calculating the Asymmetric Square Coefficient of Variation (CV²_a) for four otolith characters: length, width, perimeter, and area of the left and right lateral sagittal otoliths. Our results showed that otolith width had the lowest CV²_a (1.78), whereas otolith perimeter had the highest (4.52). Notably, the CV²_a for otolith length and width in fish with a body length of less than 110 mm was significantly higher than in fish exceeding 150 mm (<em>P</em> &lt; 0.05). However, we observed no obvious pattern in the CV²_a changes across different habitats for each otolith character, except that a significant difference in CV²_a for otolith width was detected between the NA and the ORA (<em>P</em> &lt; 0.05). We hypothesize that ontogenetic variations in <em>L. polyactis</em> otolith FA are associated with the species' feeding habits and habitat preferences. The spatial sensitivity of otolith FA to environmental pressures remains an area requiring further investigation. Future research will expand our dataset to include otolith FA from additional Sciaenidae species, aiming to enhance the accuracy and reliability of environmental pressure assessments in coastal waters.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"311 ","pages":"Article 109015"},"PeriodicalIF":2.6,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temporal and spatial dynamics of the non-indigenous bryozoan, Amathia verticillata, and its associated invertebrate community","authors":"Emily M. Zavacki ,&nbsp;Nathalie B. Reyns ,&nbsp;Jeffrey A. Crooks ,&nbsp;Michel A. Boudrias","doi":"10.1016/j.ecss.2024.109021","DOIUrl":"10.1016/j.ecss.2024.109021","url":null,"abstract":"<div><div>The widespread non-indigenous bryozoan, <em>Amathia verticillata</em> primarily colonizes in coastal bays and harbors on anthropogenic structures. Although this habitat-forming bryozoan is widely recognized to house a variety of marine invertebrates within its structure, little is known about their spatiotemporal dynamics and their associated invertebrate community in Southern California, USA. Thus, we undertook a comprehensive yearlong study (July 2021–2022) in an urbanized estuary (Mission Bay, San Diego) to quantify <em>A. verticillata</em> percent cover and abiotic conditions at 6 stations with varying environmental conditions. The seasonal and spatial gradients in temperature and salinity within Mission Bay were as expected with seasonal hypersalinity typical of Mediterranean climate regions. The percent cover of <em>A. verticillata</em> was positively correlated with temperature with the highest percent cover found during the warmest periods, and higher average percent cover found in the warmer, eastern parts of Mission Bay. We also collected three replicate <em>A. verticillata</em> colonies to characterize the marine invertebrate community associated with this non-indigenous bryozoan. We identified 25 families, 24 genera, and 19 organisms to species belonging to the taxonomic groups: amphipods, isopods, tanaids, and polychaetes. Furthermore, we identified juvenile stages and ovigerous females living within <em>A. verticillata</em>. None of the identified invertebrate families contributed more than 21 % to the community. The seasonal growth and annual temporal patterns of <em>A. verticillata</em> may prevent competitively dominant species from becoming established within the invertebrate community and allow <em>A. verticillata</em> to harbor a diverse invertebrate community. Sphaeromatidae isopods were the most common family found in the bryozoan colonies, likely reflecting their broad environmental tolerances. Additionally, while some of the invertebrates found within <em>A. verticillata</em> were also non-indigenous species, more work needs to be done to determine if <em>A. verticillata</em> disproportionately supports these species over native species. Collectively, our results imply that <em>A. verticillata</em> functions as a nursery habitat on anthropogenic structures for peracarid crustaceans and polychaetes. Furthermore, <em>A. verticillata</em> assemble analogous communities across their distribution, which may indicate that invasions are homogenizing biota globally.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"311 ","pages":"Article 109021"},"PeriodicalIF":2.6,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drastic change in estuarine ostracod assemblages after the 2020 kyushu floods, Japan: A fundamental approach with application to past flood events","authors":"Yusuke Terao ,&nbsp;Gengo Tanaka","doi":"10.1016/j.ecss.2024.109017","DOIUrl":"10.1016/j.ecss.2024.109017","url":null,"abstract":"<div><div>Floods resulting from heavy rainfall can induce short- and/or long-term changes in aquatic environments, leading to sequential decreases in living organisms. However, no reports have documented how ostracod assemblages change following floods and how they recover. The 2020 Kyushu Flood caused substantial damage from July 3rd to July 31st, particularly affecting Kumamoto Prefecture in Kyushu. Here we report a change of ostracod assemblages during and after the event at a fixed point. The frequency of species and the similarity of assemblages recovered within the four months. Among the characteristic species, <em>Spinileberis pulchra</em>, with fewer environmental constraints on its distribution, became the dominant species at the fixed point post-flood, while <em>Loxoconcha ocellata</em>, constrained by more environmental factors, disappeared but recovered within a year. The flood event is also preserved in sediment near the fixed point, and the event is characterized by the ostracod assemblages based on low marine, high brackish and freshwater species frequency. Ostracod assemblages serve as a useful indicator for identifying past flood events.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"311 ","pages":"Article 109017"},"PeriodicalIF":2.6,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 “Variability of bio-optical properties in nearshore waters of the estuary and Gulf of St. Lawrence: Absorption and backscattering coefficients” [Estuar. Coast Shelf Sci. 264 (2022) 107688]","authors":"Carlos A.S. Araújo ,&nbsp;Simon Bélanger","doi":"10.1016/j.ecss.2024.109016","DOIUrl":"10.1016/j.ecss.2024.109016","url":null,"abstract":"","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"310 ","pages":"Article 109016"},"PeriodicalIF":2.6,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extending multi-criteria coastal vulnerability assessment to low-lying inland areas: Examples from Estonia, eastern Baltic Sea","authors":"Mojtaba Barzehkar ,&nbsp;Kevin Parnell ,&nbsp;Tarmo Soomere","doi":"10.1016/j.ecss.2024.109014","DOIUrl":"10.1016/j.ecss.2024.109014","url":null,"abstract":"<div><div>The assessment of vulnerability to coastal hazards is a significant coastal management problem in regions with complicated shoreline, such as Estonia. This study implements the vulnerability assessment based on the multi-criteria decision analysis using fuzzy logic, analytical hierarchy process, and weighted linear combination (including input from experts) integrated with a geographical information system, to map the coastal vulnerability index (CVI) of the Estonian coasts at high resolution based on 16 parameters. The novelty of our approach is that we expand this assessment to a 2 km wide inland area that is an intrinsic but often overlooked part of coastal vulnerability estimates. The Estonian shores have mostly low and moderate vulnerability. Short segments with high vulnerability are impacted by severe waves and highly elevated water levels. The CVI also characterizes low-lying areas, such as large river valleys, reasonably well. Estimates of coastal vulnerability based on the three most important parameters according to experts’ judgements provide a reasonable approximation of the 16-parameter CVI in mostly homogeneous coastal regions, but less so elsewhere where its value is questioned. The results show that the application of the developed integrated decision support system, applied to a 2 km wide coastal strip, provides more information than single tools to assist coastal managers and stakeholders in planning, preparing for and responding to hazards.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"311 ","pages":"Article 109014"},"PeriodicalIF":2.6,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}