Observations and Scaling of Tidal Mass Transport Across the Lower Ganges–Brahmaputra Delta Plain: Implications for Delta Management and Sustainability
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Modeling Dynamic Processes of Mondego Estuary and Óbidos Lagoon Using Delft3d
Journal of Marine Science and Engineering Article Modeling Dynamic Processes of Mondego Estuary and Óbidos Lagoon Using Delft3D Joana Mendes , Rui Ruela, Ana Picado, João Pedro Pinheiro, Américo Soares Ribeiro , Humberto Pereira and João Miguel Dias * Physics Department, CESAM–Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal; [email protected] (J.M.); [email protected] (R.R.); [email protected] (A.P.); [email protected] (J.P.P.); [email protected] (A.S.R.); [email protected] (H.P.) * Correspondence: [email protected] Abstract: Estuarine systems currently face increasing pressure due to population growth, rapid economic development, and the effect of climate change, which threatens the deterioration of their water quality. This study uses an open-source model of high transferability (Delft3D), to investigate the physics and water quality dynamics, spatial variability, and interrelation of two estuarine systems of the Portuguese west coast: Mondego Estuary and Óbidos Lagoon. In this context, the Delft3D was successfully implemented and validated for both systems through model-observation comparisons and further explored using realistically forced and process-oriented experiments. Model results show (1) high accuracy to predict the local hydrodynamics and fair accuracy to predict the transport and water quality of both systems; (2) the importance of the local geomorphology and estuary dimensions in the tidal propagation and asymmetry; (3) Mondego Estuary (except for the south arm) has a higher water volume exchange with the adjacent ocean when compared to Óbidos Lagoon, resulting from the highest fluvial discharge that contributes to a better water renewal; (4) the dissolved oxygen (DO) varies with water temperature and salinity differently for both systems. -
Analysis of Tidal Prism Evolution and Characteristics of the Lingdingyang
MATEC Web of Conferences 25, 001 0 6 (2015) DOI: 10.1051/matecconf/201525001 0 6 C Owned by the authors, published by EDP Sciences, 2015 Analysis of Tidal Prism Evolution and Characteristics of the Lingdingyang Bay at Pearl River Estuary Shenguang Fang, Yufeng Xie & Liqin Cui Key laboratory of the Pearl River Estuarine Dynamics and Associated Process Regulation, Ministry of Water Resources, Guangzhou, Guangdong, China ABSTRACT: Tidal prism is a rather sensitive factor of the estuarine ecological environment. The historical evolution of the Lingdingyang water area and its shoreline were analyzed. By using remote sensing data, the evolution of the water area of the bay was also calculated in the past 30 years. Due to reclamation, the water area was greatly decreased during that period, and the most serious decrease occurred between 1988 and 1995. Through establishing the two-dimensional mathematical model of the Pearl River estuary, the tidal prism of the Lingdingyang bay has been calculated and analyzed. The hybrid finite analytic method of fully implicit scheme was adopted in the mathematical model’s dispersion and calculation. The results were verified though the method of combining the field hydrographic data and empirical formula calculation. The results showed that the main tidal entrance of the bay is the Lingdingyang entrance, which accounts for about 87.7% of the total tidal prism, while Hong Kong’s Anshidun waterway accounts for only 12.3% or so. Combining the numerical simulations and the historical evolution analysis of the water area and tidal prism, and compared with that in 1978, it showed that the tidal prism of the bay was greatly decreased, and the reduced area was mainly the inner Lingdingyang bay, which accounted for 88.4% of the whole shrunken areas. -
Coastal Squeeze Evidence and Monitoring Requirement Review
Coastal Squeeze Evidence and Monitoring Requirement Review Oaten, J., Brooks, A. and Frost, N. ABPmer NRW Evidence Report No. 307 Date www.naturalresourceswales.gov.uk About Natural Resources Wales Natural Resources Wales’ purpose is to pursue sustainable management of natural resources. This means looking after air, land, water, wildlife, plants and soil to improve Wales’ well-being, and provide a better future for everyone. Evidence at Natural Resources Wales Natural Resources Wales is an evidence based organisation. We seek to ensure that our strategy, decisions, operations and advice to Welsh Government and others are underpinned by sound and quality-assured evidence. We recognise that it is critically important to have a good understanding of our changing environment. We will realise this vision by: Maintaining and developing the technical specialist skills of our staff; Securing our data and information; Having a well resourced proactive programme of evidence work; Continuing to review and add to our evidence to ensure it is fit for the challenges facing us; and Communicating our evidence in an open and transparent way. This Evidence Report series serves as a record of work carried out or commissioned by Natural Resources Wales. It also helps us to share and promote use of our evidence by others and develop future collaborations. However, the views and recommendations presented in this report are not necessarily those of NRW and should, therefore, not be attributed to NRW. www.naturalresourceswales.gov.uk Page 1 Report series: NRW Evidence Report Report number: 307 Publication date: November 2018 Contract number: WAO000E/000A/1174A - CE0529 Contractor: ABPmer Contract Manager: Park, R. -
Flora and Faunal Resources and Ecosystem Conservation in the Sundarbans
International Journal of Agriculture Innovations and Research Volume 5, Issue 3, ISSN (Online) 2319-1473 Manuscript Processing Details (dd/mm/yyyy) : Received : 03/12/2016 | Accepted on : 10/12/2016 | Published : 22/12/2016 Flora and Faunal Resources and Ecosystem Conservation in the Sundarbans Dr. A.S.M. Helal Siddiqui Senior Research Officer, Mangrove Silviculture Division, Bangladesh Forest Research Institute, Ministry of Environment and Forest, Muzgunni, Khulna-9000, Bangladesh. [email protected] Abstract – The Sundarbans is the largest single tract passur ( Xylocarpus mekongensis ), goran ( Ceriops mangrove forest in the whole world. The Sundarbans has a decandra ), keora ( Sonneratia apetala ), amur (Amoora high and rich biodiversity value. There are lot of flora and cucullata ), baen (Avicennia officinalis ), kankra ( Bruguiera fauna here in the jungle. Biological diversity has three main sp .), shingra ( Cynometra ramiflora ), khalshi ( Aegiceras components such as species diversity, genetics diversity and corniculatum ), kirpa ( Lumnitzera racemosa ), golpata ecosystems diversity. Bangladesh is represented by 40% of the world true mangrove species. Bangladesh has lost 10% of (Nypa fruticans ), garjan ( Rhizophora mucronata ), dhundul the true mangrove species in recent years. Sundarbans (X. granatum )[22]-[26]. possesses a rich faunal diversity even after disappearance of a good number of interesting species. A total of 4 species of mammal, 2 species of birds, 1 species of reptile has extinct and 10 species of mammal, 11 species of birds, 16 species of reptile and 1 species of amphibian has endangered. In addition, 2 species of Sundarbans fish has critically endangered, 2 species have been showed endangered and 5 more species are vulnerable. The degradation of biological diversity is a global crisis. -
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DISCOVERY OF A POTENTIAL SITE FOR COMMUNITY-BASED SUSTAINABLE ECOTOURISM IN THE SUNDARBANS RESERVE FORESTS, BANGLADESH Mohammad Zahirul Haque School of Environmental and Natural Resources Sciences Faculty of Science and Technology Universiti Kebangsaan Malaysia 43600 Bangi, Selangor, Malaysia and Bangladesh Forest Department Bono Bhaban, Agargaon Dhaka 1207, Bangladesh Email: [email protected] Mohammad Imam Hasan Reza Institute for Environment and Development (LESTARI) Universiti Kebangsaan Malaysia 43600 Bangi, Selangor, Malaysia Email: [email protected] Md. Mahmudul Alam Senior Lecturer School of Economics, Finance & Banking (SEFB) College of Business (COB) Universiti Utara Malaysia (UUM) 06010 UUM Sintok, Kedah, Malaysia Email: [email protected] Zahir Uddin Ahmed Bangladesh Forest Department Bono Bhaban, Agargaon Dhaka 1207, Bangladesh. Email: [email protected] Md. Wasiul Islam Forestry and Wood Technology Discipline Khulna University Khulna, Bangladesh Email: [email protected] Citation Reference: Haque, M.Z., Reza, M.I.H., Alam, M.M., Ahmed, Z.U., and Islam, M.W. 2016. Discovery of a Potential Site for Community-based Sustainable Ecotourism in the Sundarbans Reserve Forests, Bangladesh. International Journal of Conservation Science, 7(2): 553- 566. http://www.ijcs.uaic.ro/public/IJCS-16-30_Haque.pdf This is a pre-publication copy. The published article is copyrighted by the publisher of the journal. 1 DISCOVERY OF A POTENTIAL SITE FOR COMMUNITY-BASED SUSTAINABLE ECOTOURISM IN THE SUNDARBANS RESERVE FORESTS, BANGLADESH Abstract Conservation of biological diversity is a pressing need and protected areas are the cornerstones for conserving remaining flora and fauna. However, forest dependent livelihood in countries like Bangladesh making this task very critical. In the case of the poor and forest-dependent livelihood in the Sundarbans area of Bangladesh, an eco-friendly ecotourism may provide an alternative livelihood, which may reduce the overexploitation from the valuable Sundarbans forest ecosystems. -
(Hamilton, 1822) in a Wetland Ecosystem (Beel Dakatia), Southwestern Bangladesh
Egyptian Journal of Aquatic Biology & Fisheries Zoology Department, Faculty of Science, Ain Shams University, Cairo, Egypt. ISSN 1110 – 6131 Vol. 25(3): 505 – 524 (2021) www.ejabf.journals.ekb.eg Growth, Condition, Maturity and Mortality of the Dwarf Gourami, Trichogaster lalius (Hamilton, 1822) in a Wetland Ecosystem (Beel Dakatia), Southwestern Bangladesh Newton Saha1*, Prosun Roy2, Zubyda Mushtari Nadia3, Wasim Akram4, Ferdous Ahamed1 5 and Md. Yeamin Hossain 1Department of Fisheries Management, Patuakhali Science and Technology University, Bangladesh 2Department of Aquaculture, Bangladesh Agricultural University, Bangladesh 3Department of Aquatic Animal Health Management, Sher-e-Bangla Agricultural University, Bangladesh 4Department of Fish Genetics and Biotechnology, Khulna University, Khulna-9208, Bangladesh 5Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Bangladesh *Corresponding Author: [email protected] ARTICLE INFO ABSTRACT Article History: The dwarf gourami, Trichogaster lalius, is a low-cost freshwater edible fish Received: Feb. 4, 2021 for the people of South Asian countries containing a variety of essential Accepted: April. 11, 2021 nutrients. The first wide-ranging explanation on the population parameters Online: June 18, 2021 specifically; length-frequency distribution (LFD), length-weight relationships _______________ (LWRs), length-length relationship (LLR), form factor (a3.0), condition factors (allometric, K ; Fulton’s, K ; relative, K ; relative weight, W ), size at first Keywords: A F R R sexual maturity (L ) and natural mortality (M ) of T. lalius were estimated. 768 Population parameter, m w specimens were collected over one calendar year (March 2019 to February Beel Dakatia, 2020) from a wetland ecosystem named Beel Dakatia, Khulna, southwestern Trichogaster lalius, Bangladesh through various traditional fishing gears. -
Asian Journal of Medical and Biological Research Socio
Asian J. Med. Biol. Res. 2021, 7 (2), 164-173; doi: 10.3329/ajmbr.v7i2.54996 Asian Journal of Medical and Biological Research ISSN 2411-4472 (Print) 2412-5571 (Online) www.ebupress.com/journal/ajmbr Article Socio-economic status of fisher communities in Dengar beel under Melandah Upazila, Jamalpur, Bangladesh Md. Fakhrul Islam*, Syed Ariful Haque, Md. Saiful Islam, Partha Sarathi Das and Mizanur Rahman Department of Fisheries, Bangamata Sheikh Fojilatunnesa Mujib Science and Technology University, Melandah, Jamalpur-2012, Bangladesh *Corresponding author: Md. Fakhrul Islam, Department of Fisheries, Bangamata Sheikh Fojilatunnesa Mujib Science and Technology University, Melandah, Jamalpur, Bangladesh. Phone: +8801825446384; E-mail: [email protected] Received: 23 May 2021/Accepted: 19 June 2021/ Published: 30 June 2021 Abstract: The current study was conducted to evaluate the socio-economic profile of fisher communities in Dengar beel under Melandah Upazila of Jamalpur district, Bangladesh. A total of 45 fishers were surveyed from November 2020 to April 2021. It was found that the family size of 53% of fishers was medium, consisting of 5- 6 members. Most of the fisher communities belonged to the age group above 45 years old, represented by 100% Muslim. About 73% of fishers were less educated, 13% primary level, 7% secondary level, and 7% Secondary School Certificate passed and above, respectively. Most of the fishers (60%) have katcha houses with tin roofing, 7% have katcha house with straw roofs, 13% have semi- pucca houses and 20% have pucca houses. Around 93% of fishers used their own tube-well while only 7% used neighbours’ tube-well. All of the fisher household were connected with electricity supply. -
Pre-Disaster Secondary Data
PRE-DISASTER SECONDARY DATA Date of Publication: March 2014 Prepared by: The JNA Consolidation Project, Bangladesh (supported by ACAPS) Nature of disaster: Waterlogging Note about this document: This secondary data review was undertaken in Bangladesh with the support of Government, NGOs, and UN agencies. The document has been reviewed by each of the clusters to ensure accuracy. This is a living document and will be updated on a regular basis, as new information becomes available. Feedback on the document should be made to ACAPS at [email protected]. Word versions of this document are available from ACAPS. COUNTRY PROFILE CLIMATE AND GEOGRAPHY Disaggregated pre-crisis demographic and socio-economic data from the 2011 Census is available on the Humanitarian Country Task Team’s web platform Bangladesh is 147,570 km² and consists of a flood plain made up of the Ganges, (HCTT). Brahmaputra, and Meghna rivers flowing into the Bay of Bengal. Population density is 1,014 people/km², compared 411 in India, 189 in Nepal, and The river delta comprises over 230 rivers and tributaries. 119 in France (WB Indicators) Two thirds of its land areas is <5 metres below sea level, however, the southeast 39.7% of the population is <18 years (CEA 2013). is hilly (WB 2011). 7% of the population is over the age of 60, of those 11% is over 80 (UNDESA 2012). The average temperature in the cooler months is 12-25° C (November – May) and The average household size is 4.4 persons (urban 4.4 and rural 4.3) (Census 2011). is 23-35° C (June – September). -
Understanding the Relationship Between Sedimentation, Vegetation and Topography in the Tijuana River Estuary, San Diego, CA
University of San Diego Digital USD Theses Theses and Dissertations Spring 5-25-2019 Understanding the relationship between sedimentation, vegetation and topography in the Tijuana River Estuary, San Diego, CA. Darbi Berry University of San Diego Follow this and additional works at: https://digital.sandiego.edu/theses Part of the Environmental Indicators and Impact Assessment Commons, Geomorphology Commons, and the Sedimentology Commons Digital USD Citation Berry, Darbi, "Understanding the relationship between sedimentation, vegetation and topography in the Tijuana River Estuary, San Diego, CA." (2019). Theses. 37. https://digital.sandiego.edu/theses/37 This Thesis: Open Access is brought to you for free and open access by the Theses and Dissertations at Digital USD. It has been accepted for inclusion in Theses by an authorized administrator of Digital USD. For more information, please contact [email protected]. UNIVERSITY OF SAN DIEGO San Diego Understanding the relationship between sedimentation, vegetation and topography in the Tijuana River Estuary, San Diego, CA. A thesis submitted in partial satisfaction of the requirements for the degree of Master of Science in Environmental and Ocean Sciences by Darbi R. Berry Thesis Committee Suzanne C. Walther, Ph.D., Chair Zhi-Yong Yin, Ph.D. Jeff Crooks, Ph.D. 2019 i Copyright 2019 Darbi R. Berry iii ACKNOWLEGDMENTS As with every important journey, this is one that was not completed without the support, encouragement and love from many other around me. First and foremost, I would like to thank my thesis chair, Dr. Suzanne Walther, for her dedication, insight and guidance throughout this process. Science does not always go as planned, and I am grateful for her leading an example for me to “roll with the punches” and still end up with a product and skillset I am proud of. -
Tidal Datums and Their Applications
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Center for Operational Oceanographic Products and Services TIDAL DATUMS AND THEIR APPLICATIONS NOAA Special Publication NOS CO-OPS 1 NOAA Special Publication NOS CO-OPS 1 TIDAL DATUMS AND THEIR APPLICATIONS Silver Spring, Maryland June 2000 noaa National Oceanic and Atmospheric Administration U.S. DEPARTMENT OF COMMERCE National Ocean Service Center for Operational Oceanographic Products and Services Center for Operational Oceanographic Products and Services National Ocean Service National Oceanic and Atmospheric Administration U.S. Department of Commerce The National Ocean Service (NOS) Center for Operational Oceanographic Products and Services (CO-OPS) collects and distributes observations and predictions of water levels and currents to ensure safe, efficient and environmentally sound maritime commerce. The Center provides the set of water level and coastal current products required to support NOS’ Strategic Plan mission requirements, and to assist in providing operational oceanographic data/products required by NOAA’s other Strategic Plan themes. For example, CO-OPS provides data and products required by the National Weather Service to meet its flood and tsunami warning responsibilities. The Center manages the National Water Level Observation Network (NWLON) and a national network of Physical Oceanographic Real-Time Systems (PORTSTM) in major U.S. harbors. The Center: establishes standards for the collection and processing of water level and current data; collects and documents user requirements which serve as the foundation for all resulting program activities; designs new and/or improved oceanographic observing systems; designs software to improve CO-OPS’ data processing capabilities; maintains and operates oceanographic observing systems; performs operational data analysis/quality control; and produces/disseminates oceanographic products. -
Coupling of Sea Level Rise, Tidal Amplification, and Inundation
MAY 2014 H O L L E M A N A N D S T A C E Y 1439 Coupling of Sea Level Rise, Tidal Amplification, and Inundation RUSTY C. HOLLEMAN* AND MARK T. STACEY Department of Civil and Environmental Engineering, University of California, Berkeley, Berkeley, California (Manuscript received 1 October 2013, in final form 13 January 2014) ABSTRACT With the global sea level rising, it is imperative to quantify how the dynamics of tidal estuaries and em- bayments will respond to increased depth and newly inundated perimeter regions. With increased depth comes a decrease in frictional effects in the basin interior and altered tidal amplification. Inundation due to higher sea level also causes an increase in planform area, tidal prism, and frictional effects in the newly inundated areas. To investigate the coupling between ocean forcing, tidal dynamics, and inundation, the authors employ a high-resolution hydrodynamic model of San Francisco Bay, California, comprising two basins with distinct tidal characteristics. Multiple shoreline scenarios are simulated, ranging from a leveed scenario, in which tidal flows are limited to present-day shorelines, to a simulation in which all topography is allowed to flood. Simulating increased mean sea level, while preserving original shorelines, produces addi- tional tidal amplification. However, flooding of adjacent low-lying areas introduces frictional, intertidal re- gions that serve as energy sinks for the incident tidal wave. Net tidal amplification in most areas is predicted to be lower in the sea level rise scenarios. Tidal dynamics show a shift to a more progressive wave, dissipative environment with perimeter sloughs becoming major energy sinks. -
Indian River Inlet: an Evaluation by the Committee Cm Tidal Hydraulics
I I July 1994 I o it~ol [m] us Army corps of Engineers Indian River inlet: An Evaluation by the Committee cm Tidal Hydraulics by The Committee on Tidal Hydraulics Approved For Public Release; Distribution Is Unlimited I I I Prepared for Headquarters, U.S. Army Corps of Engineers , ..: PRESENT lvl&BERSEilP OF : ;r .; COMMl~”EE ON ilbAL HYDRAULlb ., ,,.,.: . .; 4’ Members : U ~ ~ L . / ,, .: ‘: ,. F. A. Herrmann,. Jr., Chairman :~Waterways~Experiment Station ‘.: W. H. McAnally,’Jr., Waterways Experiment Station Executive Secretary ., .: L. C. Blake ~ ~Charleston District ~ H. L. Butler ~ .kVaterwaysiExperiment Station j .’ A. J. Combe j New Orleans District ~ :, .. Dr. J. Harrison ., ,Waterways ‘.Experimen~ Station Dr. B. W. Holliday :-leadquarters~ U.S. Army Corps of : Engineers ~ . ‘, ;. J. Merino ~ South Pacific :Division ., V. R. Pankow : Water Resources Support Center E. A. Reindl, Jr. j Galveston tiistrict . A. D. Schuldt ~ Seattle Dist~ct !. R. G. Vann ~ Norfolk District ,. C. J. Wener ‘: New England Division - ,, /. Liaison S. B. Powell He,adquarters,., U.S. Army Corps of VEngineers” : , ., ,. Consultants Dr. R. B. Krone - Davis, CA Dr. D. W. Pritchard Severna Park,” MD H. B. Simmons “’ Vicksburg, MS” Corresponding Member C. F. Wicker ; We~stChester, PA ~ :. Destroy this report when no longer needed.. Do not return it to the originator. July 1994 1 Indian River Inlet: An Evaluation I by the Committee on Tidal Hydraulics by The Committee on Ttdal Hydraulics Final report Approvedforpublicrelease; distributionis unlimited Prepared for U.S. Army Corps of Engineers Washington, DC 20314-6199 Published by U.S. Army Corps of Engineers Waterways Experiment Station 3909 Halls Ferry Road Vicksburg, MS 39180-6199 WaterwaysExperiment StatIonCataloging-in-PublicatlqnData I United States.