The value of traditional water schemes : small tanks in the Kala Oya Basin, Sri Lanka PDF Download

Author: Shamen Vidanage
Publisher: IUCN
ISBN: 9558177504
Category :
Languages : en
Pages : 76

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Author: Lucy Emerton
Publisher: IUCN
ISBN: 9558177431
Category : Biotic communities
Languages : en
Pages : 102

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Author: Shin-ichi Nakano
Publisher: Springer Science & Business Media
ISBN: 4431540326
Category : Science
Languages : en
Pages : 478

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Book Description
Biological diversity is important for ecosystem function and services, which in turn is essential for human well-being. Under the Convention on Biological Diversity, international efforts have been made to achieve a significant reduction in the current rate of biodiversity loss. The loss continues, however. The Asia-Pacific region includes both developing countries with high biodiversity and developed countries with sophisticated data collection and analyses, but only limited information about the status quo of biodiversity in this region has been available. Many Asia-Pacific countries have rapidly grown their economies and social infrastructures, causing a loss of biodiversity and requiring an urgent mandate to achieve a balance between development and conservation in the region. In December 2009, scientists successfully organized the Asia-Pacific Biodiversity Observation Network in the region, to establish a network for research and monitoring of ecosystems and biodiversity and to build a cooperative framework. The present volume is the first collection of information on biodiversity in the Asia-Pacific and represents a quantum step forward in science that optimizes the synergy between development and biodiversity conservation.

Author: C. R. Panabokke
Publisher: IWMI
ISBN: 9290904771
Category : Irrigation
Languages : en
Pages : 85

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Book Description
The core of this study involved an examination and analysis of certain key features of the traditional small tank cascade systems: a) the location and design of the systems in the past b) the hydro-system which considers the overall hydrological balance and groundwater conditions c) maintenance and tank use d) tank management and integration with local farming systems.

Author: Dilys Roe
Publisher: John Wiley & Sons
ISBN: 111842851X
Category : Science
Languages : en
Pages : 404

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Book Description
Biodiversity conservation and poverty alleviation are both important societal goals demanding increasing international attention. While they may seem to be unrelated, the international policy frameworks that guide action to address them make an explicit assumption that conserving biodiversity will help to tackle global poverty. Part of the Conservation Science and Practice Series published with the Zoological Society of London, this book explores the validity of that assumption. The book addresses a number of critical questions: Which aspects of biodiversity are of value to the poor? Does the relationship between biodiversity and poverty differ according to particular ecological conditions? How do different conservation interventions vary in their poverty impacts? How do distributional and institutional issues affect the poverty impacts of interventions? How do broader issues such as climate change and the global economic system affect the biodiversity – poverty relationship at different scales? This volume will be of interest to policy-makers, practitioners and researchers concerned with understanding the potential - and limitations - of integrated approaches to biodiversity conservation and poverty alleviation.

Author: Heidi Wittmer
Publisher: Routledge
ISBN: 1136344594
Category : Science
Languages : en
Pages : 386

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Book Description
In this volume of the TEEB (The Economics of Ecosystems and Biodiversity) publication series, the key concepts of the project are applied to local and regional policy and public management. The aim is to show that by taking nature's benefits into account, decision makers can promote local development to ensure human well-being and economic growth and stability, while maintaining environmental sustainability. The book explores the potential for local development provided by an approach based on nature. It offers examples of successful implementation of this approach from across the world, highlighting the importance of local decision making in management and planning. It provides tools and practical guidance for reform, and throughout the volume the economic benefits of environmental consideration at a local level are expounded. This book is intended to offer inspiration and practical suggestions for the improvement and sustainable management of the environment and human well-being. The local aspect of this book complements the focus of the previous three volumes, completing the set to provide a comprehensive approach to simultaneously improving and maintaining economic and environmental stability, as well as human well-being.

Author: James Workman
Publisher: IUCN
ISBN: 9782831708829
Category : Environmental protection
Languages : en
Pages : 78

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Author: Mahua Mukherjee
Publisher: Springer Nature
ISBN: 9811648158
Category : Nature
Languages : en
Pages : 519

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Book Description
This book provides an introduction to the critical role of ecosystem-based disaster risk resilience (Eco-DRR) for building community resilience to multiple environmental risks such as rising heat, water stress, and pollution. Blue-green infrastructure (BGI) is an Eco-DRR tool that is an under-explored paradigm and can respond as one common strategy to targets set by the Sustainable Development Goals (UNDP), Climate Agreements (UNEP), the Sendai Framework (UNISDR), and the New Urban Agenda (UNCHS). Highlighted here in a systematic way is the importance of blue-green infrastructures in resilience building. The purpose is to introduce readers to the challenging context of development and opportunity creation for Eco-DRR. The roles of policy, scientific research, and implementation are presented cohesively. An attractive proposition of the book is a collection of case studies from different parts of the world where integration of BGI is experimented with at various levels of success. It envisages that shared tacit experiences from the realm of practice will further strengthen explicit knowledge. The focus in this book is on need and context building, policy and science (investigation, analysis, and design), case studies, and a road map for the future in four successive parts. Each part is self-sufficient yet linked to its predecessor, successor, or both, as the case may be.

Author: Stefan Zerbe
Publisher: Springer Nature
ISBN: 3030955729
Category : Science
Languages : en
Pages : 723

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This book offers perspectives on how to develop a sustainable global balance of urbanization, land-use intensification, land abandonment, and multifunctional cultural landscapes. The focus is on the latter by describing the large variety of traditional cultural landscapes having evolved through centuries or even millennia by the use of the natural, terrestrial and aquatic resources. Those cultural landscapes encompass pasture, agroforestry, terraced, irrigation, coastal, monastic, and sacred landscapes as well as lake-, river-, and saltscapes. The restoration of low-input land-use systems which often carry a high biodiversity on the species, ecosystem, and landscape level as well as agrobiodiversity and agrodiversity is outlined. The restoration of multifunctional and diverse landscapes, however, is not only an ecological issue but encompasses many socio-economic aspects such as e.g., the revitalization of villages, eco-tourism, healthy food production, infrastructure, and rural-urban partnerships. Global environmental problems, which are related to urbanization and the intensification of the use of land and water resources are comprehensively outlined. Land abandonment which occurs on all continents is qualitatively and quantitatively assessed and the consequences for natural and cultural heritage loss is highlighted. With the presentation of current rural development and landscape conservation strategies on the national as well as international level, the topic reflects the high significance of environmental policy on the global scale. The global implementation of natural and cultural heritage conservation is, for example, given by the UNESCO World Heritage Sites, National Parks, Biosphere Reserves, Globally Important Agricultural Heritage Sites, High Nature Value Farmland, and the Satoyama initiative. However, also the “every-day” landscapes can contribute to biodiversity and strong sustainability. This comprehensive compendium, based on about 4,000 references of scientific studies, literature reviews, project reports, and environmental policy papers is thought for all students, scholars, and stakeholders from multifaceted disciplines, interested in multifunctional cultural landscapes and how traditions and innovation on the landscape level can be merged for a sustainable future on our planet. Case studies from all over the world are presented which can be used in Higher Education or to demonstrate the numerous approaches of sustainable rural development.

Author: Silva, E. I. L.
Publisher: IWMI
ISBN: 9290907789
Category : Nature
Languages : en
Pages : 126

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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.