Showing 281 - 300 results of 301 for search '"estuary"', query time: 0.05s Refine Results
  1. 281

    Risk Assessment and Spatial Migration Patterns of Compound Flood and Derived Landslide Disasters in Guangzhou,China by LI Xiaodi, ZHONG Ming, LI Xueyou

    Published 2023-01-01
    “…Compound floods and derived landslide disasters are frequent in estuaries under the influence of high-intensity localized heavy rainfalls and tidal level top support.This paper proposes a comprehensive method for risk assessment and spatial migration patterns of compound flood and derived landslide disasters.Meanwhile,taking Guangzhou as the study area,it constructs the index system for risk assessment of compound floods and derived landslide disasters in the city.Additionally,the weighted comprehensive evaluation method is adopted to assess the risk of multi-source compound disasters,and the spatial risk distribution pattern of the above-mentioned three types of disasters and the migration law of the disaster risk are explored based on the standard deviation ellipse method.The results are as follows:① 52.81% areas of Guangzhou are medium-high risk and high-risk ones,and the risk of composite floods and derived landslide disasters as a whole presents the characteristics of high risk in the northeast and low risk in the southwest,among which the risk of Conghua District and Zengcheng District is higher.Thus,disaster prevention and mitigation measures should be taken to reduce the disaster risks in the above areas.② The center of gravity of the risk of heavy rainfall flooding-composite flooding-composite flooding and derived landslide hazards first moves to the southwest and then to the northeast,and the disaster risk shows a southwest-northeast distribution pattern,with the first enhanced and then gradually weakened aggregation effect of disaster risks.The results can provide a scientific basis for the risk decision-making of compound disasters and disaster prevention planning.…”
    Get full text
    Article
  2. 282

    Water Quality Credit Trading: General Principles by Tara Wade, Tatiana Borisova

    Published 2022-02-01
    “…A recent FDEP water quality assessment report shows that the concentration of nitrogen in surface water is increasing in some Florida regions, and most assessed rivers, streams, canals, lakes, and estuaries were not meeting surface water quality standards (FDEP 2016). …”
    Get full text
    Article
  3. 283

    Genome-Wide Identification and Expression Analysis of the <i>ALDH</i> Gene Family in <i>Sinonovacula constricta</i> Bivalve in Response to Acute Hypersaline Stress by Jianing Yu, Biao Wu, Yinghui Dong, Zhihua Lin, Hanhan Yao

    Published 2024-12-01
    “…The razor clam <i>Sinonovacula constricta</i>, a significant marine bivalve species, inhabits estuaries and encounters salinity stress. Despite its commercial importance, there is limited understanding of its adaptive mechanisms to high salinity. …”
    Get full text
    Article
  4. 284

    Heavy Metals Pollution and Pb Isotopic Signatures in Surface Sediments Collected from Bohai Bay, North China by Bo Gao, Jin Lu, Hong Hao, Shuhua Yin, Xiao Yu, Qiwen Wang, Ke Sun

    Published 2014-01-01
    “…However, the heavy metals concentrations in surface sediments in Bohai Bay were below the other important bays or estuaries in China. The assessment by Geoaccumulation Index indicated that Cr, Zn, and Cd were classified as “the unpolluted” level, while Ni, Cu, and Pb were ranked as “unpolluted to moderately polluted” level. …”
    Get full text
    Article
  5. 285

    Discerning Natural and Anthropogenic Factors Driving the Variation of Estuarine CH4 and N2O by Zhengping Chen, Liuqian Yu, Qichun Yang, Qixing Ji

    Published 2025-01-01
    “…Estuaries are commonly recognized as a major source of greenhouse gases due to the massive anthropogenic input of organic matter and nutrients, which is associated with highly active microbial assemblages. …”
    Get full text
    Article
  6. 286

    Quantitative Attribution of Runoff and Sediment Changes in the East River Basin and Impact on Erosion and Siltation of River Channel by LI Huadong, ZENG Jiali, PAN Yifei, ZHANG Li, LAI Zhigang

    Published 2020-01-01
    “…Under the disturbance of global warming and intensive human activities,runoff and sediment in the river basin have changed significantly,thus causing enormous ecological and environmental pressure in rivers,estuaries and coastal waters.Taking East River basin as the research object,this paper analyzes the temporal characteristics of runoff and sediment by M-K test and Pettitt test,quantitatively separates the impact of climate change and human activities on runoff and sediment in the river basin by the double mass curve method and modified SWAT model,and evaluates its effect on erosion and siltation of downstream river channel.Results show that:①SWAT model was suitable for the daily and monthly runoff and sediment simulations in the East River basin,with poor simulation for runoff and sediment with daily average discharges higher than 1 500 m<sup>3</sup>/s;②The change point of runoff and sediment was 1973 and 1988 respectively.Therefore,the baseline period for runoff was 1967—1973 and sediment was 1967—1988,while impact period was 2009—2016;③The impact of human activities on water and sediment changes in the basin is significant.Contribution of climate change and human activities for runoff in 2009—2016 was about 57% and 43% respectively.Climate change and population growth were the main contribution factors for annual runoff reduction.While human activities,especially dam construction,contributed over 90% of sediment.Population growth,soil and water conservation project,and dam construction in basin were the major factors for annual sediment reduction;④Affected by sand mining in river channel,after the baseline period,the impact of human activities,especially dam construction on the middle and lower channel was firstly decreased and then increased.During the impact period,the contribution of dam construction to the erosion and siltation of middle and lower river channel was 25.8%,which was not the main factor for the evolution of the middle and lower river channel.…”
    Get full text
    Article
  7. 287

    Les ports romains atlantiques et intérieurs en France : équipement, architecture, fonction et environnement by Jimmy Mouchard

    Published 2020-12-01
    “…., of port archeology in metropolitan France, both in estuaries and along rivers. Before embarking on a long journey across the Three Gauls (Lyonnaise, Aquitaine et Belgique), with stops along the way in the best-known ports today, it seemed important to us to recall the foundations of this promising field of study. …”
    Get full text
    Article
  8. 288

    Water Environment in Macro-Tidal Muddy Sanmen Bay by Li Li, Lihong Wu, Jinxiong Yuan, Xinyu Zhao, Yuezhang Xia

    Published 2024-12-01
    “…The water environment in estuaries is a crucial factor affecting the biodiversity and self-purification capacity of coastal zones. …”
    Get full text
    Article
  9. 289

    Temporal and Spatial eDNA Analysis of Fish Assemblages in Postindustrial, Urban Coastal Habitats by Alice Cunnington, Erika Neave, Peter Shum, Rupert Collins, Stefano Mariani

    Published 2024-11-01
    “…In this study, we utilized eDNA metabarcoding to investigate temporal and spatial trends in fish assemblages within urban coastal habitats between the Dee and Mersey estuaries (United Kingdom), historically one of the most anthropogenically impacted postindustrial coasts in the world. …”
    Get full text
    Article
  10. 290

    Benthic Marine Diatom Flora (Bacillariophyta) of Yap, Micronesia: Preliminary Annotated List, with Some New Mangrove Species by Christopher S. Lobban, Bernadette G. Tharngan

    Published 2025-01-01
    “…Yap diatoms—from freshwater streams through estuaries and mangroves to the marine coral reefs—had been sampled in 1988 and 2014 and a few species from the 1988 collections described in a 2009 report. …”
    Get full text
    Article
  11. 291

    The development of a kinetic biotic ligand model to predict acute toxicity of Gadolinium for Daphnia magna by Marion Revel, Qiao-Guo Tan, Andrew Hursthouse, Susanne Heise

    Published 2025-01-01
    “…The model was then validated, first in the presence of dissolved organic matter (DOM), and then with water samples collected from lakes, rivers, and estuaries in France and Germany. The outcome revealed that three major cations (potassium, magnesium, and calcium) act as strong competitors. …”
    Get full text
    Article
  12. 292

    An Assessment of Ammonia Emissions from Dairy Facilities in Pennsylvania by James D. Ferguson, Zhengxia Dou, Charles F. Ramberg

    Published 2001-01-01
    “…Atmospheric ammonia contributes to acid rain, eutrophication of estuaries and lakes, and particulate air pollution. …”
    Get full text
    Article
  13. 293

    Assessing environmental change and population declines of large wading birds in southwestern India by K.M. Aarif, Aymen Nefla, K.A. Rubeena, Yanjie Xu, Zakher Bouragaoui, M. Nasser, C.T. Shifa, T.R. Athira, K. Jishnu, Jasmine Anand, Seerangan Manokaran, P.P. Moosa, Anu Gopinath, Omer R. Reshi, K.M. Rajaneesh, H. Byju, Thadickal V. Joydas, Karuppasamy P. Manikandan, Mohd Irfan Naikoo, Christian Sonne, Sabir Bin Muzaffar

    Published 2025-02-01
    “…Thus, large waders have adapted to these long-term, anthropogenically driven, environmental changes by shifting to agroecosystems and estuaries as their alternate foraging habitats. These population declines indicate consistent decline in ecosystem health of wetlands. …”
    Get full text
    Article
  14. 294
  15. 295

    Characterizing Tidal Marsh Inundation with Synthetic Aperture Radar, Radiometric Modeling, and In Situ Water Level Observations by Brian T. Lamb, Kyle C. McDonald, Maria A. Tzortziou, Derek S. Tesser

    Published 2025-01-01
    “…Tidal marshes play a globally critical role in carbon and hydrologic cycles by sequestering carbon dioxide from the atmosphere and exporting dissolved organic carbon to connected estuaries. These ecosystems provide critical habitat to a variety of fauna and also reduce coastal flood impacts. …”
    Get full text
    Article
  16. 296

    Heavy metals concentration in the sediment of the aquatic environment caused by the leachate discharge from a landfill by L. Sulistyowati, N. Nurhasanah, E. Riani, M. Cordova

    Published 2023-04-01
    “…This investigation aimed to evaluate the levels of cadmium, chromium, and lead in the sediments to assess the conditions of the Cisadane River.METHODS: At eight stations (representing the midstream and downstream region), surface sediment samples were collected using a van Veen sediment grab based on the hypothesis that heavy metal pollution originated from land-based activities and migrated down river estuaries. The Thermo Scientific iCAP 7400 was utilized to assess heavy metals (cadmium, chromium, and lead) by adopting prior research methodologies and method guidelines.FINDINGS: Except for lead, which surpassed the interim sediment quality standard, the levels of heavy metals observed in the midstream and downstream sections of the Cisadane River were found to be well below the guideline level. …”
    Get full text
    Article
  17. 297

    Exploring the multifaceted roles of Sonneratia apetala and Nipa fruticans in coastal habitat restoration and bioactive properties discovery by Sabina Yasmine, Rezwana Zaman Proma, Md. Ripaj Uddin, Mohammad Saydur Rahman, Md. Hamedul Islam, Muhammad Abdullah Al Mansur, AHM Shofiul Islam Molla Jamal, Abu Yousuf, Md. Hasnain Mustak, Sarker Kamruzzaman, M. Mahboob Ali Siddiqi

    Published 2025-02-01
    “…They are extensively utilized by the local communities of the Sundarbans and coastal estuaries for various purposes. Aim of the study: This study aims to provide an in-depth review of these plants, relying on secondary data and information. …”
    Get full text
    Article
  18. 298
  19. 299

    Sustainability status of amphidromous nike fish, postlarva Gobioidei, in estuarine water by F.M. Sahami, S.N. Hamzah, A.H. Tome, S.A. Habibie, M.R.U. Puluhulawa

    Published 2024-01-01
    “…Therefore, this study assessed the sustainability status of Nike fish in the waters of Tomini Bay Gorontalo.METHODS: This study was conducted across five Nike fishing locations in Tomini Bay, Gorontalo Province, namely the Bone-Bolango, Bilungala, Tombulilato, Taludaa, and Bilato estuaries, from April to September 2023. Data were collected through interviews with 109 Nike fishers and four experts from government agencies in Gorontalo Province. …”
    Get full text
    Article
  20. 300

    Assessment of Environmental Hazards and Vulnerability of The Rud–E-Shur, Rud-E-Shirin and Rud-E-Minab International Wetland Using the DPSIR Model by Hengameh Safa Eisini, Saber Ghasemi, Afshin Danehkar, Mohsen Dehghani Ghanateghestani, Hossein Parvaresh

    Published 2024-10-01
    “…Two factors of the transfer of wastewater from shrimp farms to the wetland and water pollution are categorized at the noteworthy category, as well as the countless traffic of vessels inside the lagoon and the creation of shrimp farm channels in the estuaries leading to the lagoon are in the category of tolerable risks, respectively, in the first to sixth priorities, which require control measures to reduce environmental risks. …”
    Get full text
    Article