Dynamic Sedimentary Environments Of Mangrove Coasts
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Dynamic Sedimentary Environments Of Mangrove Coasts
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Author : Friess Daniel
language : en
Publisher: Elsevier
Release Date : 2020-12-05
Dynamic Sedimentary Environments Of Mangrove Coasts written by Friess Daniel and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-05 with Science categories.
Dynamic Sedimentary Environments of Mangrove Coasts provides knowledge on the importance of sedimentary dynamics in managing mangrove forests. In the first part of the book, the editors seamlessly offer a general introduction of mangrove sedimentary dynamics. This leads into more in-depth information on soil surface elevation change, sea level rise, and the importance of sedimentary dynamics in the loss or gain of blue carbon. The book concludes the discussion of mangrove sedimentary dynamics by addressing the issues of climate change (e.g. sea level rise and blue carbon) on mangrove restoration and sediment. This book will assist coastal managers and academics in addressing the gaps in mangrove restoration and coastal management. As such, it will be a valuable reference for advanced undergraduate students, graduate students, researchers, academics in the field of coastal restoration, and coastal management practitioners. Provides a state-of-the-art summary of research into sedimentary dynamics in mangrove forests Includes updates on issues of climate change-relevant to mangroves, such as blue carbon and sea level rise Presents scientific background and successful case studies for mangrove restoration that can solve problems relating to mangrove management
Sediment Dynamics And Deposits Along The Fluvial Marine Transition
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Author : Aaron T. Fricke
language : en
Publisher:
Release Date : 2017
Sediment Dynamics And Deposits Along The Fluvial Marine Transition written by Aaron T. Fricke and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Alluvium categories.
Rivers supply the vast majority of sediment that reaches the global ocean. As many rivers approach the sea, they experience tidal influence in the absence of salinity, along a reach known as the tidal river. As a result, a significant fraction of the sediment discharged by rivers around the world passes through a tidal river before entering the ocean. Within the tropics, these tidal rivers also supply sediment to coastal mangrove forests near the river mouths. Although common, the deposits and dynamics associated with tidal rivers and the coastal mangrove forests they nourish remain poorly understood. Processes acting within tidal-river environments, as well as between tidal rivers and adjacent mangrove forests, are governed by a combination of fluvial and tidal processes, which are a focus of this work. The Amazon River is the largest fluvial source of freshwater and sediment to the global ocean and has the longest tidally-influenced reach in the world. Two major rivers, the Tapajós and Xingu, enter the Amazon along its tidal reach. However, unlike most fluvial confluences, these are not one-way conduits through which water and sediment flow downstream toward the sea. The drowned river valleys (rias) at the confluences of the Tapajós and Xingu with the Amazon River experience water-level fluctuations associated not only with the seasonal rise and fall of the river network, but also with semidiurnal tides that propagate as far as 800 km up the Amazon River. Superimposed seasonal and tidal forcing, distinct sediment and temperature signatures of Amazon and tributary waters, and antecedent geomorphology combine to create mainstem-tributary confluences that act as sediment traps rather than sources of sediment. Hydrodynamic measurements are combined with data from sediment cores to determine the distribution of tributary- and Amazon-derived sediment within the ria basins, characterize the sediment-transport mechanisms within the confluence areas, and estimate rates of sediment accumulation within both rias. The Tapajós and Xingu ria basins trap the majority of the sediment carried by the tributaries themselves in addition to ~20 Mt y-1 of sediment sourced from the Amazon River. These findings have implications for the interpretation of stratigraphy associated with incised-valley systems, such as those that dominated the transfer of sediment to the oceans during low-stands in sea level. The estimates of water and sediment discharged by the Amazon River are based on data from the lowermost non-tidal gauging station at Óbidos, ~800 km upstream of the Atlantic Ocean. Depositional environments along the lengthy tidal river downstream of Óbidos have been proposed as important sinks for up to a third of the reported sediment discharge from the Amazon River. However, the morphology and dynamics of the intertidal floodplain have yet to be described. River-bank surveys in five areas along the Amazon tidal river reveal a distinct evolution in bank morphology between the upper, central, and lower reaches of the tidal river. The upper tidal-river floodplain is defined by prominent natural levees that strongly control the transfer of water and sediment between the mainstem Amazon River and its floodplain. Increased tidal influence in the central tidal river suppresses levee development, and tidal currents increase sediment transport into the distal parts of the floodplain. The floodplain morphology in the lower tidal river closely resembles marine intertidal environments (e.g., mud flats, salt marshes), with dendritic tidal channels incising elevated vegetated flats. Theory, morphology, and geochronology suggest that the dynamics of sediment delivery to the intertidal floodplain of the Amazon tidal river vary along its length due to the relative dominance of fluvial and tidal influence. The interplay between fluvial and marine influence is similarly felt in coastal mangrove forests that are nourished by tidal rivers. Mangrove forests are an important means of coastal protection along many shorelines in the tropics, and are often associated with large rivers there. The mangrove forest at the seaward end of Cù Lao Dung, an island in the Mekong Delta, includes areas with progradation rates of 10s of meters per year, and areas that have experienced little to no progradation in recent decades. The physical proximity (
Blue Carbon Dynamics Of The Indian Ocean
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Author : Abhra Chanda
language : en
Publisher: Springer Nature
Release Date : 2022-03-21
Blue Carbon Dynamics Of The Indian Ocean written by Abhra Chanda and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-21 with Science categories.
This book gives an overview of various aspects of blue carbon dynamics from each country bordering the Indian Ocean. Given the importance of the topic of blue carbon, it can be assumed that in near future, more and more researchers from the Indian Ocean countries will pursue environmental research in this domain. This book is a ready reference to all those who are interested to have a holistic understanding about the ground scenario of blue carbon in the Indian Ocean. There are many research institutes situated in the periphery of the Indian Ocean that are devoted to nurturing the new avenues of marine carbon research. Researchers and scholars interested in this domain will find this book provides a good overview, wherein all the necessary information on the status and functioning of these blue carbon ecosystems are detailed in a concise way. The book is also helpful to postgraduate students of ‘marine science’ or those who have a specialization in ‘marine biogeochemistry’ or ‘chemical oceanography’ to develop a basic understanding about the very concept of ‘blue carbon’ from the perspective of the Indian Ocean.
Coastal Biogeomorphology
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Author : Zhan Hu
language : en
Publisher: Frontiers Media SA
Release Date : 2022-09-13
Coastal Biogeomorphology written by Zhan Hu and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-13 with Science categories.
The Role Of Mangroves In Coastal And Estuarine Sedimentary Accretion In Southeast Asia
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Author : Punarbasu Chaudhuri
language : en
Publisher:
Release Date : 2022
The Role Of Mangroves In Coastal And Estuarine Sedimentary Accretion In Southeast Asia written by Punarbasu Chaudhuri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Electronic books categories.
Mangroves provide a distinctive mechanism of trapping sediment and accelerating land-building processes in tide-dominated coastal and estuarine environments. The complex hydrodynamic and salinity conditions, accumulation rates of both organic and inorganic sediments, primary surface elevation, and hydroperiod influence sediment retention mechanism within mangrove ecosystems. Abundant terrigenous sediment supply can form dynamic mud banks and the complex aerial root system of mangroves may lead to accretion of sediment by weakening the tidal velocity. Such mechanisms are often enhanced by organic flocculation. The efficiency of sediment trapping by mangroves is species specific. Adaptability and resilience of mangroves enable them to cope with the moderate to high rates of sea level rise. However, subsurface movements and deep subsidence due to autocompaction may augment the effects of relative sea level rise. Increasing population pressure and forest-based economic activities have caused global reduction of mangrove coverage challenging the sedimentation processes. Marker horizon techniques and surface elevation table (SET) tests have facilitated assessment of spatial variability in patterns of sediment accretion and surface elevation in various coastal sites of species-diverse Southeast Asia, especially coastal Malaysia and Thailand. The mangroves of the eastern coast of India have witnessed sediment retention, having an association with the seasonal rainfall regime.
Tropical Marine Ecology
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Author : Daniel M. Alongi
language : en
Publisher: John Wiley & Sons
Release Date : 2021-12-09
Tropical Marine Ecology written by Daniel M. Alongi and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-12-09 with Nature categories.
No realm on Earth elicits thoughts of paradise more than the tropics. The tropical marine realm is special in myriad ways and for many reasons from seas of higher latitude, in housing iconic habitats such as coral reefs, snow white beaches, crystal clear waters, mangrove forests, extensive and rich seagrass meadows and expansive river deltas, such as the exemplar, the Amazon. But the tropics also has an even more complex side: tropical waters give rise to cyclones, hurricanes and typhoons, and unique oceanographic phenomena including the El Niño- Southern Oscillation which affects global climate patterns. Tropical Marine Ecology documents the structure and function of tropical marine populations, communities, and ecosystems in relation to environmental factors including climate patterns and climate change, and patterns of oceanographic phenomena such as tides and currents and major oceanographic features, as well as chemical and geological drivers. The book focuses on estuarine, coastal, continental shelf and open ocean ecosystems. The first part of the book deals with the climate, physics, geology, and chemistry of the tropical marine environment. The second section focuses on the origins, diversity, biogeography, and the structure and distribution of tropical biota. The third part explores the rates and patterns of primary and secondary production, and their drivers, and the characteristics of pelagic and benthic food webs. The fourth part examines how humans are altering tropical ecosystems via unsustainable fisheries, the decline and loss of habitat and fragmentation, Further, pollution is altering an earth already in the throes of climate change. Tropical Marine Ecology is an authoritative and comprehensive introduction to tropical marine ecology for advanced undergraduate and postgraduate students. It is also a rich resource and reference work for researchers and professional managers in marine science.
Drivers Of Mangrove Forest Change And Its Effects On Biodiversity And Ecosystem Services
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Author : Jennifer Howard
language : en
Publisher: Frontiers Media SA
Release Date : 2022-08-25
Drivers Of Mangrove Forest Change And Its Effects On Biodiversity And Ecosystem Services written by Jennifer Howard and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-08-25 with Nature categories.
Water Quality And Mangrove Ecosystem Dynamics
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Author : Samuel C. Snedaker
language : en
Publisher:
Release Date : 1981
Water Quality And Mangrove Ecosystem Dynamics written by Samuel C. Snedaker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Forest ecology categories.
The Mangroves Of Southeast Asia In The United Nation S Decade On Ecosystem Restoration
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Author : Severino III Salmo
language : en
Publisher: Frontiers Media SA
Release Date : 2024-01-30
The Mangroves Of Southeast Asia In The United Nation S Decade On Ecosystem Restoration written by Severino III Salmo and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-01-30 with Science categories.
Mangroves Biodiversity Livelihoods And Conservation
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Author : Sudhir Chandra Das
language : en
Publisher: Springer Nature
Release Date : 2022-05-24
Mangroves Biodiversity Livelihoods And Conservation written by Sudhir Chandra Das and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-05-24 with Technology & Engineering categories.
This contributory volume is a comprehensive collection on the mangrove forest eco-system and its ecology, the resources and potentials of mangroves, conservation efforts, mangrove eco-system services and threats to conservation. The book is an all-inclusive compilation on the status, conservation and future of mangroves. Mangroves are a unique ecosystem providing several ecosystem services. They are formed in the inter-tidal areas of large rivers and coastal islands. Mangroves thrives due to constant interaction with the terrestrial and marine ecosystem. These are the species dynamics, varying tidal amplitudes, plant succession, changing floral pattern of the channels of the estuary, the varying sediment transportation. There was 20% decline in mangrove forest area in the last 25 years due mainly to conversion and coastal development. Lengthy recovery periods required for the degraded mangrove forests. Hence there is an urgent need to take stock of the updated information on these mangroves at global level. It is of immense value to scientific community involved in teaching, research and extension activities related to mangrove conservation.