Download or read book An Appraisal of Challenges in the Sustainable Management of the Micro tidal Barrier built Estuaries and Lagoons in Sri Lanka written by and published by IUCN. This book was released on 2012 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lagoons and estuaries written by Sriyanie Miththapala and published by IUCN. This book was released on 2013-01-01 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal lagoons and estuaries, lying at the boundary between ocean and land, house a unique mosaic of habitats, giving rise to high species diversity and the creation of ecotones. They are also ecologically and economically important ecosystems that provide many ecosystem services. Yet, these coastal ecosystems are facing a gamut of human-induced threats. This booklet is the fourth in the Coastal Ecosystems Series, published in an attempt to address the lack of information available to the general public regarding the threats to coastal ecosystems.
Download or read book Tidal flats written by Sriyanie Miththapala and published by IUCN. This book was released on 2013-01-01 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This booklet is an attempt to redress the lack of general knowledge on tidal flats and create awareness about their importance and the current threats facing these little-known ecosystems.
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 Governance Performance in Integrated Coastal Management written by and published by IWMI. This book was released on 2011 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report seeks to present a review of the current status of coastal governance with regard to its compatibility with Integrated Coastal Management (ICM) in Sri Lanka. The purpose of this review is to support the preparatory programme of work of the Mangroves For the Future (MFF) initiative, and as such represents one of several studies commissioned that are to feed into this planning process for each participating country. To this end, it is envisaged the report will provide a resource for ICM practitioners and policy planners who may be involved with the MFF process both at the national and regional levels.
Download or read book Conservation and Sustainable Use of Biodiversity in the Islands and Lagoons of Northern Sri Lanka written by and published by . This book was released on 2018 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coastal Lagoons written by I. Ethem Gonenc and published by CRC Press. This book was released on 2004-12-16 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal Lagoons: Ecosystem Processes and Modeling for Sustainable Use and Development describes the concepts, models, and data needed to design and implement management programs for long-term sustainability of coastal lagoons. Based on a project conducted under the auspices of NATO-CCMS, the book provides information and methodologies essential for
Download or read book Sri Lanka written by and published by UNEP/Earthprint. This book was released on 2005 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Documents the main features of the tsunami, the many ways in which it affected and was affected by coastal landforms, ecosystems, farmlands and settlements. Looks at the consequences of its impact and highlights the key issues, including those to do with debris and waste management, sustainable sourcing of drinking water, land drainage, deforestation pressures, and disaster preparedness. Contains a number of recommendations for action on which an indicative portfolio of proposed remediation projects is based.
Download or read book Coastal Zone Management Plan written by Sri Lanka. Coast Conservation Department and published by . This book was released on 1990 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Restoration for Environment Sustainability written by and published by . This book was released on 2007 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: On the outcome of the Project on "Sustainable Development Guidelines and Its Pilot Implementation", Sri Lanka regional mission of UNEP Regional Office for Asia and the Pacific.
Download or read book 21 Annual Report of the Glasgow Society for the Education of Deaf and Dumb written by and published by . This book was released on 1842 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.
Download or read book Coastal lagoons written by Pierre Lasserre and published by . This book was released on 1982 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lagoons and Coastal Wetlands in the Global Change Context Impact and Management Issues written by P., Viaroli and published by Springer. This book was released on 2010-11-17 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This interdisciplinary volume comprehensively reviews recent developments in wetland science and global change. The aim is to identify gaps, problems and successes in the integration of scientific issues into lagoon and coastal wetland management. The major strength of this volume is that it integrates several fields of research including climatology, hydrology, geomorphology, ecology and biology.
Download or read book Impacts of Irrigation on Inland Fisheries written by Sophie Nguyen-Khoa and published by IWMI. This book was released on 2005 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Environmental Inventory of Estuaries and Coastal Lagoons in New South Wales written by Frederick Charles Bell and published by . This book was released on 1980 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World Atlas of Seagrasses written by Frederick T. Short and published by Univ of California Press. This book was released on 2003 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seagrasses are a vital and widespread but often overlooked coastal marine habitat. This volume provides a global survey of their distribution and conservation status.
