Estuaries and Coasts最新文献

{"title":"Recovery of Eelgrass Zostera marina Following Conversion of Conventional Chain Moorings to Conservation Mooring Systems in Massachusetts: Context-Dependence, Challenges, and Management","authors":"","doi":"10.1007/s12237-023-01322-7","DOIUrl":"https://doi.org/10.1007/s12237-023-01322-7","url":null,"abstract":"<h3>Abstract</h3> <p>Eelgrass (<em>Zostera marina</em>) meadows and boat mooring fields co-occur in nearshore, relatively sheltered embayments. Traditional chain moorings create denuded scars in eelgrass meadows due to repeated and chronic scour of the seafloor by the chain, impacting meadow contiguity and quality. This study assessed the recovery of eelgrass into mooring scars following the conversion of traditional chain moorings to floating rode conservation mooring systems (CMS) in three Massachusetts harbors. The magnitude of eelgrass recovery following the conversion of 21 moorings to floating rode CMS was contingent on the location and positively correlated with the size of the scar associated with the mooring. While most scars started to revegetate following mooring conversion, few experienced complete recoveries and had a persistent denuded halo averaging 2 m in radius around the mooring anchors 5 years post-conversion. We observed CMS gear dragging on the bottom and impacting eelgrass when it was oversized for the depth of the site, and when it was not maintained or cleaned of fouling organisms. Overall, we show that floating rode CMS can be an important tool for eelgrass conservation; however, eelgrass recoveries following mooring conversion to floating rode CMS are variable and incomplete, and challenges pertaining to proper installation and long-term maintenance must be addressed to fully realize this potential.</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"16 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139551495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Presence of Hummock and Hollow Microtopography Reflects Shifting Balances of Shallow Subsidence and Root Zone Expansion Along Forested Wetland River Gradients","authors":"Ken W. Krauss, Gregory B. Noe, Jamie A. Duberstein, Nicole Cormier, Andrew S. From, Thomas R. Doody, William H. Conner, Donald R. Cahoon, Darren J. Johnson","doi":"10.1007/s12237-024-01327-w","DOIUrl":"https://doi.org/10.1007/s12237-024-01327-w","url":null,"abstract":"","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"159 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139551665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accelerating Elevation Gain Indicates Land Loss Associated with Erosion in Mississippi River Deltaic Plain Tidal Wetlands","authors":"Camille LaFosse Stagg, Leigh Anne Sharp, Emily Fromenthal, Brady Couvillion, Victoria Woltz, Sarai Piazza","doi":"10.1007/s12237-023-01321-8","DOIUrl":"https://doi.org/10.1007/s12237-023-01321-8","url":null,"abstract":"<p>In recent years, the Mississippi River Deltaic Plain (MRDP) has experienced the highest rates of wetland loss in the USA. Although the process of vertical drowning has been heavily studied in coastal wetlands, less is known about the relationship between elevation change and land loss in wetlands that are experiencing lateral erosion and the contribution of erosion to land loss in the MRDP. We quantified relationships of elevation change and land change in ten submerging tidal wetlands and found that, despite significant land loss, elevation trajectories in seven of the land loss study sites were positive. Furthermore, we observed an acceleration in elevation gain preceding the conversion from vegetated marsh to open water.</p><p>To identify regional contributions of lateral erosion to land loss, we quantified the relationship of elevation change and land change in 159 tidal marsh sites in the MRDP. Approximately half the sites were persistently losing land, and 82% of these sites were vulnerable to erosion, identifying erosion as a dominant mechanism of coastal wetland loss in this region. Notably, the sites that were vulnerable to erosion were experiencing land loss while also gaining elevation, and sites with the highest land loss exhibited accelerating elevation gain. Together, these data illustrate that (1) erosion is a dominant mechanism of wetland loss in the MRDP, (2) accelerated elevation gain is an indicator of erosion, and (3) consideration of elevation change trajectories within the context of land change is critical for providing accurate coastal wetland vulnerability assessments.</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"1 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139516725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identifying and Constraining Marsh-Type Transitions in Response to Increasing Erosion over the Past Century","authors":"Alisha M. Ellis, Christopher G. Smith, Kathryn E. L. Smith, Jessica A. Jacobs","doi":"10.1007/s12237-023-01320-9","DOIUrl":"https://doi.org/10.1007/s12237-023-01320-9","url":null,"abstract":"<p>Marsh environments, characterized by their flora and fauna, change laterally in response to shoreline erosion, water levels and inundation, and anthropogenic activities. The Grand Bay coastal system (USA) has undergone multiple large-scale geomorphic and hydrologic changes resulting in altered sediment supply, depositional patterns, and degraded barrier islands, leaving wetland salt marshes vulnerable to increased wave activity. Two shore-perpendicular transect sites, one along a low-activity shoreline and the other in a high activity area of the same bay-marsh complex, were sampled to investigate how the marshes within 50 m of the modern shoreline have responded to different levels of increased wave activity over the past century. Surface sediments graded finer and more organic with increased distance from the shoreline while cores generally exhibited a coarsening upwards grain-size trend; all cores contained multiple large sedimentological shifts. ²¹⁰Pb-based mass accumulation rates over the last two decades were greater than the long-term (centurial) average at each site with the fastest accumulation rates of 7.81 ± 1.58 and 7.79 ± 1.63 kg/m²/year at the sites nearest the shoreline. A shoreline change analysis of three time-slices (1848–2017, 1957–2017, 2016–2017) shows increased erosion at both sites since 1848 with modern rates of −0.95 and −0.88 m/year. Downcore sedimentology, mass accumulation rates, and shoreline change rates paired with foraminiferal biofacies and identification of local estuarine indicator species, <i>Paratrochammina simplissima</i>, aided in identifying paleo marsh types, their relative proximity to the shoreline, and sediment provenance. The high-energy marsh site transitioned from middle marsh to low marsh in the 1960s, and the low-energy marsh site transitioned later, at the end of the twentieth and early twenty-first century, due to its more protected location. Marsh type transition corresponds chronologically with the coarsening upwards grain-size trend observed and the degradation of Grand Batture Island; since its submergence, signatures of multiple storm event have been preserved downcore.</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"11 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139516826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consequences of Juvenile Fish Movement and Seascape Connectivity: Does the Concept of Nursery Habitat Need a Rethink?","authors":"Daniel S. Swadling, Nathan A. Knott, Matthew D. Taylor, Matthew J. Rees, Gwenael Cadiou, Andrew R. Davis","doi":"10.1007/s12237-023-01323-6","DOIUrl":"https://doi.org/10.1007/s12237-023-01323-6","url":null,"abstract":"<p>Estuarine and adjacent inshore habitats have long been recognised as important nursery areas for fishes before they disperse to coastal habitats. Assessing nursery function supports spatial and fisheries management, yet work commonly focusses on singular habitat types. Re-considering how juvenile fish connect habitats may improve our understanding of nursery function and the scales that recruits are supplied to coastal fisheries. This study quantified the juvenile movements of two harvested fishes in south-eastern Australia, luderick (<i>Girella tricuspidata</i>) and yellowfin bream (<i>Acanthopagrus australis</i>). Acoustic tags were used to track 33 luderick and 20 yellowfin bream from seagrass meadows for up to ~400 days in Jervis Bay Marine Park. Both species had relatively small home ranges (&lt; 7 km²) and exhibited site attachment to seagrass meadows where they were released. Most luderick and yellowfin bream were detected moving 100’s metres to kilometres to reefs adjacent to seagrass, although these movements were not habitat shifts. Rather, reef-ward movements represented repeated visits that lasted days to months before fish returned to seagrass, suggesting that these movements may be explorations in search of suitable adult habitat. Strong retention within an existing marine reserve was observed, with only five of 33 fish tagged within reserves crossing the boundary into fished waters. Overall, our results demonstrate that juvenile fish use and connect multiple habitat types during their movements. These findings support the broadening of the nursery concept from single habitats to a mosaic of functionally connected habitat patches (dubbed ‘seascape nurseries’).</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"188 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139507274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decadal Trends in Surface Elevation and Tree Growth in Coastal Wetlands of Moreton Bay, Queensland, Australia","authors":"Vicki Bennion, John M. Dwyer, Alice J. Twomey, Catherine E. Lovelock","doi":"10.1007/s12237-024-01325-y","DOIUrl":"https://doi.org/10.1007/s12237-024-01325-y","url":null,"abstract":"<p>Coastal wetlands surrounding urban environments provide many important ecosystem services including protection from coastal erosion, soil carbon sequestration and habitat for marine and terrestrial fauna. Their persistence with sea-level rise depends upon their capacity to increase their soil surface elevation at a rate comparable to the rate of sea-level rise. Both sediment and organic matter from plant growth contribute to gains in soil surface elevation, but the importance of these components varies among sites and with variation in climate over long time scales, for which monitoring is seldom available. Here, we analysed variation in surface elevation, surface accretion and mangrove tree growth over 15 years in Moreton Bay, Queensland, Australia, a period that spans variation in the <i>El Niño/La Niña</i> (ENSO) cycle, which strongly influences rainfall and sea level in the region. Piecewise structural equation models were used to assess the effects of biotic (tree growth, plant cover and bioturbation by invertebrates) and environmental factors on annual surface elevation increments throughout this period. Our model for mangroves identified that surface accretion and tree growth were both positively influenced by rainfall, but surface elevation was not, and thus, higher levels of compaction of the soil profile in high rainfall/high sea level years were inferred. In contrast, our saltmarsh model found that rainfall positively influenced surface accretion and elevation gains. Declines in surface elevation in the mangroves were influenced by the species composition of the mangrove, with higher levels of elevation loss occurring in mangrove forests dominated by <i>Avicennia marina</i> compared to those with a higher proportion of <i>Rhizophora stylosa</i>. Decadal-scale variation in ENSO affected mangrove tree growth, but surface elevation trends were more strongly influenced by variation in environmental conditions than by tree growth, although effects of biotic factors (mangrove species composition and bioturbation) on surface elevation trends were observed. Further research into tipping points with extreme ENSO events (either <i>La Niña</i> with high rainfall and high sea level or <i>El Niño</i> with low rainfall and low sea levels) will help clarify the future of mangrove and saltmarsh distribution within Moreton Bay.</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"14 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139497996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Responses of Coastal Wetlands to Rising Sea-Level Revisited: The Importance of Organic Production","authors":"James T. Morris, Karen Sundberg","doi":"10.1007/s12237-023-01313-8","DOIUrl":"https://doi.org/10.1007/s12237-023-01313-8","url":null,"abstract":"<p>A network of 15 Surface Elevation Tables (SETs) at North Inlet estuary, South Carolina, has been monitored on annual or monthly time scales beginning from 1990 to 1996 and continuing through 2022. Of 73 time series in control plots, 12 had elevation gains equal to or exceeding the local rate of sea-level rise (SLR, 0.34 cm/year). Rising marsh elevation in North Inlet is dominated by organic production and, we hypothesize, is proportional to net ecosystem production. The rate of elevation gain was 0.47 cm/year in plots experimentally fertilized for 10 years with N&amp;P compared to nearby control plots that have gained 0.1 cm/year in 26 years. The excess gains and losses of elevation in fertilized plots were accounted for by changes in belowground biomass and turnover. This is supported by bioassay experiments in marsh organs where at age 2 the belowground biomass of fertilized <i>S. alterniflora</i> plants was increasing by 1,994 g m⁻² year⁻¹, which added a growth premium of 2.4 cm/year to elevation gain. This was contrasted with the net belowground growth of 746 g m⁻² year⁻¹ in controls, which can add 0.89 cm/year to elevation. Root biomass density was greater in the fertilized bioassay treatments than in controls, plateauing at about 1,374 g m⁻² and 472 g m⁻², respectively. Growth of belowground biomass was dominated by rhizomes, which grew to 3,648 g m⁻² in the fertilized treatments after 3 years and 1,439 g m⁻² in the control treatments after 5 years. Depositional wetlands are limited by an exogenous supply of mineral sediment, whereas marshes like North Inlet could be classified as autonomous because they depend on in situ organic production to maintain elevation. Autonomous wetlands are more vulnerable to SLR because their elevation gains are constrained ultimately by photosynthetic efficiency.</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"12 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139475663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing Shallow Seagrass Versus Fringing Marsh Habitat Use by Nekton Juvenile Recruits with “Incomparable” Fishing Gear in the Northern Gulf of Mexico","authors":"Just Cebrian, Rebecca Gilpin, Juan Alberti, Laura West, Ryan Moody, Rachel McDonald, Yee Lau, Whitney Scheffel","doi":"10.1007/s12237-024-01324-z","DOIUrl":"https://doi.org/10.1007/s12237-024-01324-z","url":null,"abstract":"<p>Shallow coastal systems act as nursery habitat for many species of fish and macroinvertebrates. Juveniles of these species may show selective use of certain habitat types over others, but the degree of such selectivity is not well studied for many species. Analysis of habitat selectivity is often hindered by inherently different gear types used in the habitats examined, which may not allow for direct comparison between the habitats. Here, we carry out nekton catches in the fringing marsh, using fyke nets, and in the adjacent seagrass habitat, using trawls, in the northern Gulf of Mexico to assess the relative use of the two habitats by the juveniles of six widespread important species. To resolve issues of gear comparability between fyke nets and trawls, we develop a habitat use index <span>(({HUI}_{S}))</span>. The results reveal a consistent trend where, in relation to pinfish, speckled sea trout shows slightly higher (from 8.4 to 66.9 times); American silver perch and brown shrimp show moderately higher (from 2.3 to 369.4 times); and blue crab and white shrimp show greatly higher (from 90.6 to 2366.4 times) use of marsh over seagrass habitat. Thus, while similar in direction, differences in the use of marsh over seagrass habitat in relation to pinfish were more pronounced in some sites. We propose an index that can resolve issues of gear comparability and improve our understanding of coastal habitat selectivity by fish and macroinvertebrates.</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"66 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139475716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Salinity on the Development and Dormancy of Cladonema digitatum","authors":"","doi":"10.1007/s12237-023-01310-x","DOIUrl":"https://doi.org/10.1007/s12237-023-01310-x","url":null,"abstract":"<h3>Abstract</h3> <p>Some hydrozoan species are known for their high adaptability and dormancy ability, e.g., <em>Cladonema</em> species, which are also promising model organisms. Since salinity affects the development and distribution of hydrozoan species, it is important to get further understanding of salinity tolerance and dormancy ability of <em>Cladonema</em> species. <em>Cladonema digitatum</em> is a cryptic species and is discovered only in artificial environments. In this study, multiple experiments have been conducted to determine how salinity affects the development of <em>C. digitatum</em> polyps and medusae, to describe the dormancy and recovery of the <em>C. digitatum</em> polyps, and to find the possible prevention and disposal protocol for the occurrence of <em>Cladonema</em> in artificial environments. As results, salinity range of 35–40 ppt was optimal for <em>C. digitatum</em> polyps, while <em>C. digitatum</em> medusae lived best in 30–35 ppt; <em>C. digitatum</em> would form menonts at 15, 50–60 ppt, revive and change their survival strategies after salinity upturned to 35 ppt, which could enhance their tolerance and adaptability. <em>Cladonema digitatum</em> medusae also showed different death rates when faced with sharp hypersaline and hyposaline stress. In summary, this research provided ecological information about salinity range and dormancy ability of <em>C. digitatum</em>, which not only facilitated tracing the wild habitats of the <em>C. digitatum</em>, but also provided the theoretical basic of elimination and prevention of <em>Cladonema</em> species intrusion and breeding conservation in the laboratory.</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"29 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139461576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response to: Conway et al. (2023), Red Drum Salinity Tolerance: Comments on Ackerly et al. “Short-Term Salinity Stress During Early Development Impacts the Growth and Survival of Red Drum (Sciaenops ocellatus)”","authors":"Kerri Lynn Ackerly, Kathleen J. Roark, Kristin M. Nielsen","doi":"10.1007/s12237-023-01305-8","DOIUrl":"https://doi.org/10.1007/s12237-023-01305-8","url":null,"abstract":"<p>Here, we present a point-by-point response to the unfounded and unsupported criticisms presented in the Technical Commentary, “Red Drum Salinity Tolerance: Comments on Ackerly et al. “Short-Term Salinity Stress During Early Development Impacts the Growth and Survival of Red Drum (Sciaenops ocellatus)” by Conway et al. (2023). The technical commentary – which was not subject to the same peer review process as the article it attempts to undermine – was written by consultants that were paid by an industrial entity that has invested heavily in multiple proposed desalination projects sited within an enclosed bay system. Here, we provide additional detail on Conway et al.’s conflict of interest and demonstrate that their arguments are fundamentally flawed and – in many cases – conflict with one another. We conclude that the intentions underlying Conway et al.’s criticisms are to undermine confidence in credible peer-reviewed science, and to attempt to establish a basis for future legal arguments regarding contested permits for desalination facilities within essential fish habitat. Ultimately, the assertions in Conway et al. (2023) are not intended to be convincing to the larger scientific community, but to muddy the waters for legal experts and decision makers that lack expertise in ecotoxicology.</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"84 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139420542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}