Download or read book An Introduction to the Coastal Geomorphology of Sri Lanka written by Bernard Swan and published by . This book was released on 1983 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Introduction to Coastal Processes and Geomorphology written by Robin Davidson-Arnott and published by Cambridge University Press. This book was released on 2019-09-19 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grounded in current research, this second edition has been thoroughly updated, featuring new topics, global examples and online material. Written for students studying coastal geomorphology, this is the complete guide to the processes at work on our coastlines and the features we see in coastal systems across the world.

Download or read book Lagoons of Sri Lanka written by Silva, E. I. L. and published by IWMI. This book was released on 2013-03-01 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sri Lanka, an island in the Indian Ocean, has lagoons along 1,338 km of its coastline. They experience low-energy oceanic waves and semidiurnal microtidal currents. The Sri Lankan coastal lagoons are not numerous but they are diverse in size, shape, configuration, ecohydrology, and ecosystem values and services. The heterogeneous nature, in general, and specific complexities, to a certain extent, exhibited by coastal lagoons in Sri Lanka are fundamentally determined by coastal and adjoining hinterland geomorphology, tidal fluxes and fluvial inputs, monsoonal-driven climate and weather, morphoedaphic attributes, and cohesive interactions with human interventions.Most coastal lagoons in Sri Lanka are an outcome of mid-Holocene marine transgression and subsequent barrier formation and spit development enclosing the water body between the land and the sea. This process has varied from one coastal stretch to another due to wave-derived littoral drift, sediment transport by tidal fluxes, fluvial inputs and wave action or, in other words, sea-level history, shore-face dynamics and tidal range as the three major factors that control the origin and maintenance of the sandy barrier, the most important features for the formation and evolution of coastal lagoons with their landward water mass. In certain stretches of Sri Lanka’s coastline, formation of the barrier spit was very active due to shore-face dynamics that resulted in chains of shore parallel, elongated lagoons. They are among the most productive in terms of ecosystem yield and show some similarities to large tropical lagoons with respect to sea entrance, zonation, biodiversity and ecosystem services. However, some of them become seasonally hypersaline due to lack of freshwater input and high evaporation. Functions and processes of some of these water bodies are fairly known. There are a fair number of small back-barrier lagoons of different shapes and sizes whose origin goes back to sea-level history. They are located on low-energy coasts with prominent beach ridges and restricted hinterland geomorphology. Mixing processes of these landward indentations are hindered by elevated sand dunes, and their salinity increases due to poor freshwater input and high evaporation leading to seasonally hypersaline conditions. These sedimented lagoons, primarily confined to the southeastern coast of the island, are biologically the least productive, with limited ecosystem values and services. Another group of moderately elongated semicircular, slightly large lagoons in the same coast, formed exclusively by submergence due to mid-Holocene sea-level rises, do not receive sufficient freshwater input leading to seasonally hypersaline conditions. They are also biologically unproductive but some are ecologically important since they provide habitats conducive to migratory birds. In contrast, some lagoons on the southern coast receive sufficient freshwater via streams draining the wet zone, maintain more estuarine salinities, exhibit rich biodiversity and serve as functional resource units. Lagoons formed by mid-Holocene submergence and recession of water level with simultaneous chain barrier formation on the high energy southwest coast, which includes cliffs, small bays and headlands, show peculiar configurations and link channel characteristics. Some of these irregular water bodies have clusters of small isles and luxuriant mangrove swamps with high biodiversity but not very rich in catadromous finfish and shellfish species due to the restricted nature of the entrance channel and nondistinct salinity gradients. The barrier-built, seasonally hypersaline lagoon complex in the Jaffna Peninsula, the largest lagoon system in the country with multiple perennial entrances show extremely narrow salinity ranges towards the upper limit of salinity. The main lagoon is elongated and the shore parallel to eastward and southward extensions is connected by narrow channels. The other lagoon in the Jaffna Peninsula is elongated, shore parallel and ribbon-shaped and receives tidal water throughout the year but freshwater is received only from precipitation and surface runoff. Even though the lagoons in the peninsula are extremely rich in ecosystem heterogeneity their hydrology and hydrodynamics have been severely disturbed by infrastructural development for transportation and by attempts to create a freshwater river for Jaffna. There are a few virgin lagoons of moderate size also on the northern coast, south of the Jaffna Peninsula on both the east and west sides. They look very typical tropical lagoons rich in biodiversity and biological production but their structure, functions and values are virtually unknown in scientific or socioeconomic terms. The lagoons located on the east coast are not numerous but relatively large in extent. They are also an outcome not only of mid-Holocene sea-level rises but of submerged multi-delta valleys or abandoned paleo estuaries. When inundated, the multi-delta valley configuration became elongated and is shore parallel with a smooth seaward shoreline; both shorelines become irregular when coastal waves are weak, and internal waves are created by the action of local winds. Configuration of a lagoon formed by inundation of an abandoned river valley is irregular with a long entrance channel extended landward. These lagoons are highly productive with a variety of associated ecosystems, large open water areas and wide perennial sea entrances. When the lagoon is too much elongated, zonation is prominent due to fewer entrance effects. Lagoons form a particular type of natural capital which generates use values (fish, shrimp, fuelwood, salt, fodder, ecotourism, anchorage, recreation, etc.) and nonuse values (habitat preservation, biodiversity, ecosystem linkages, etc.) contributing positively towards improving the human well-being. Of many values of lagoons in Sri Lanka, only the extractive values are generally utilized at present, by way of fish and shrimp catches, salt production and use of mangrove for various purposes. Besides, coastal lagoons generate a range of nonextractive use values and nonuse values, which could add towards the total economic value. Misuse has taken place at several instances when “use” adversely affects the status of the resources or the health of the ecosystem due to vulnerability and poverty, population pressure, urbanization, development activities and multi-stakeholder issues. The status of lagoon resources shows that the resources in the majority of Sri Lankan lagoons still remain satisfactory, somewhat good or very good. Nevertheless, concerns for management of lagoons in Sri Lanka exist only where “use values” (extractive values, such as fish and shrimp) exist. There is no evidence of resources management in lagoons for inspirational, scholarly values or tacit knowledge of the same. Management for use values exhibits several stages from zero management to comanagement via community management and state intervention. Most of Sri Lanka’s lagoons have the potential for generating high extractive and nonextractive use values which could improve the human well-being, while maintaining resources sustainability. Unfortunately, these potentials have not been understood or “seen” yet by the relevant authorities, although a few instances of exploring this potential were noticed.

Download or read book Coastal Landforms written by Eric Charles Frederick Bird and published by Canberra, Australian National University [1964]. This book was released on 1964 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Coastal Geomorphology written by J. A. Steers and published by Springer. This book was released on 1971-02-01 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coastal Geomorphology written by Eric C. F. Bird and published by John Wiley & Sons. This book was released on 2011-09-09 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal Geomorphology, Second Edition is a comprehensive and systematic introduction to this subject and demonstrates the dynamic nature of coastal landforms, providing a background for analytical planning and management strategies in coastal areas that are subject to continuing changes. This introductory textbook has been completely revised and updated, and is accompanied by a website which provides additional illustrations, global examples, case-studies and more detailed and advanced information on topics referenced in the book, together with explanations of terminology, annotated references and research material.

Download or read book Coastal Geomorphology written by Keith Martin Clayton and published by . This book was released on 1979 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coastal geomorphology written by Karlheinz Kaiser and published by . This book was released on 1968 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coastal Geomorphology written by Douglas Joel Sherman and published by . This book was released on 2013 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field guide to reef fishes of Sri Lanka written by Arjan Rajasuriya and published by IUCN. This book was released on 2014-01-01 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hope is that this field guide, along with its companion, volume 1, will be useful resources for snorkelers, divers, and all those interested in marine life in expanding their knowledge on identification of species found in the reef habitats of Sri Lanka.

Download or read book Coastal Geomorphology written by Keith Martin Clayton and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to Coastal Geomorphology written by John Pethick and published by Hodder Arnold. This book was released on 1984 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coastal Environments written by V. Subramanian and published by Springer Science & Business Media. This book was released on 2012-10-12 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the major issues being faced by the coastal population in Asia with emphasis on natural and man-made hazards, climate change impact and pressures caused by mega cities along Asian coasts. The edited book contains chapters authored by experts who are well known in their own fields of specialization relevant to coastal processes. Emphasis has been given to almost all regions of Aisan coast although coverage for south and south eastern regions of Asia is rather strong. Each chapter has been peer reviewed and revised before acceptance. In this book practical suggestions to mitigate problems in sustainable management of coastal regions are also discussed. The book will be useful for students, researchers in physical and social science, policy makers and climate change specialists.

Download or read book The Soils of Sri Lanka written by Ranjith B. Mapa and published by Springer Nature. This book was released on 2020-05-16 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive and up-to-date overview of the soils of Sri Lanka. Including sections on the soil research history, climate, geology, geomorphology, major soil types, soil maps, soil properties, soil classification, soil fertility, land use and vegetation, soil management, soils and humans, soils and industry, and future soil issues, the book summarizes the current state of knowledge in a concise and highly reader-friendly way.

Download or read book Journal of the Geological Society of Sri Lanka written by and published by . This book was released on 1998 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wetland Science written by B. Anjan Kumar Prusty and published by Springer. This book was released on 2017-04-21 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an attempt to acknowledge the discipline ‘wetland science’ and to consolidate research findings, reviews and synthesis articles on different aspects of the wetlands in South Asia. The book presents 30 chapters by an international mix of experts in the field, who highlight and discuss diverse issues concerning wetlands in South Asia as case studies. The chapters are divided into different themes that represent broad issues of concern in a systematic manner keeping in mind students, researchers and general readers at large. The book introduces readers to the basics and theory of wetland science, supplemented by case studies and examples from the region. It also offers a valuable resource for graduate students and researchers in allied fields such as environmental studies, limnology, wildlife biology, aquatic biology, marine biology, and landscape ecology. To date the interdisciplinary field ‘wetland science’ is still rarely treated as a distinct discipline in its own right. Further, courses on wetland science aren’t taught at any of the world’s most prestigious universities; instead, the topics falling under this discipline are generally handled under the disciplines ‘ecology’ or under the extremely broad heading of ‘environmental studies’. It is high time that ‘Wetland Science’ be acknowledged as an interdisciplinary sub-discipline, which calls for an attempt to consolidate its various subtopics and present them comprehensively. Thus, this book also serves as a reference base on wetlands and facilitates further discussions on specific issues involved in safeguarding a sustainable future for the wetland habitats of this region.

Download or read book A Glossary of Coastal Geomorphology written by Eric C. F. Bird and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: