This document discusses the critical connection between water security and ecosystem services. It begins by introducing the concepts of sustainable development, ecosystem services, and the Millennium Ecosystem Assessment. It then explores the ecosystem approach to water resources management and the role of freshwater resources in supporting human activities and ecosystem functions. The document presents several case studies that demonstrate lessons learned about habitat rehabilitation, pollution control, environmental flows, stakeholder involvement, and integrated watershed management in achieving both water security and sustainable ecosystem services. It concludes by recommending various response options to promote the management of balanced ecosystem services and water security.
Introducing Groundwater Management PowerPoint Presentation Slides. Analyze information about water quality and underpin decisions about water resource management with this PPT slideshow. Demonstrate the process of planning, developing, and managing the optimum use of water by using this visually appealing PPT layout. The survey data for determining water quality can be easily presented by using our professionally designed water cycle management PowerPoint slideshow. Describe the natural processes and human processes that affect water quality. Understand sources of water pollution, natural and human processes affecting water quality by taking the advantage of this PPT slideshow. Provide data on the optimization of deterioration in water quality and pollutants that deteriorate the quality of water on a global scale with the help of our water quality management PowerPoint infographics. You can easily explain further topics like wastewater treatment process, wastewater reuse, global wastewater reuse by sector, etc. by downloading this ready-to-use PowerPoint slide deck. https://bit.ly/2RCTUun
The total volume of water on Earth is estimated at 1.386 billion km³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water. Of the fresh water, only 0.3% is in liquid form on the surface. In addition, the lower mantle of inner earth may hold as much as 5 times more water than all surface water combined (all oceans, all lakes, all rivers).
Presentation by Dr. Adrian Cashman of the Centre for Resource Management and Environmental Studies (CERMES) at the 5th High Level Session Ministerial Forum of the Global Water Partnership-Caribbean (GWP-C).
CLIMATE change affects the components of water cycle such as evaporation, precipitation and evapotranspiration and thus results in large-scale alteration in water present in glaciers, rivers, lakes, oceans, etc. The effects of cli-mate change on subsurface water relates to the changes in its recharge and discharge rates plus changes in quantity and quality of water in aquifers. Climate change refers to the long-term changes in the components of climate such as temperature, precipitation, evapotranspiration, etc. The major cause of climate change is the rising level of greenhouse gases (GHGs) in the atmosphere such as CO2, CH4, N2O, water vapour, ozone and chlorofluorocarbon. These GHGs absorb 95% of the longwave back radiations emitted from the surface, thus making the Earth warmer. Except CO2, the effects of other GHGs are minor because of their low concentration and also because of low residence times (e.g. water vapour and methane). The rise in CO2 level causing global warming was first proposed by Svante Arrhenius, a Swedish scientist in 1896 and now it is a widely accepted fact that the concentration of CO2 is the primary regulator of temperature on the Earth and leads to global warming.
Introducing Groundwater Management PowerPoint Presentation Slides. Analyze information about water quality and underpin decisions about water resource management with this PPT slideshow. Demonstrate the process of planning, developing, and managing the optimum use of water by using this visually appealing PPT layout. The survey data for determining water quality can be easily presented by using our professionally designed water cycle management PowerPoint slideshow. Describe the natural processes and human processes that affect water quality. Understand sources of water pollution, natural and human processes affecting water quality by taking the advantage of this PPT slideshow. Provide data on the optimization of deterioration in water quality and pollutants that deteriorate the quality of water on a global scale with the help of our water quality management PowerPoint infographics. You can easily explain further topics like wastewater treatment process, wastewater reuse, global wastewater reuse by sector, etc. by downloading this ready-to-use PowerPoint slide deck. https://bit.ly/2RCTUun
The total volume of water on Earth is estimated at 1.386 billion km³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water. Of the fresh water, only 0.3% is in liquid form on the surface. In addition, the lower mantle of inner earth may hold as much as 5 times more water than all surface water combined (all oceans, all lakes, all rivers).
Presentation by Dr. Adrian Cashman of the Centre for Resource Management and Environmental Studies (CERMES) at the 5th High Level Session Ministerial Forum of the Global Water Partnership-Caribbean (GWP-C).
CLIMATE change affects the components of water cycle such as evaporation, precipitation and evapotranspiration and thus results in large-scale alteration in water present in glaciers, rivers, lakes, oceans, etc. The effects of cli-mate change on subsurface water relates to the changes in its recharge and discharge rates plus changes in quantity and quality of water in aquifers. Climate change refers to the long-term changes in the components of climate such as temperature, precipitation, evapotranspiration, etc. The major cause of climate change is the rising level of greenhouse gases (GHGs) in the atmosphere such as CO2, CH4, N2O, water vapour, ozone and chlorofluorocarbon. These GHGs absorb 95% of the longwave back radiations emitted from the surface, thus making the Earth warmer. Except CO2, the effects of other GHGs are minor because of their low concentration and also because of low residence times (e.g. water vapour and methane). The rise in CO2 level causing global warming was first proposed by Svante Arrhenius, a Swedish scientist in 1896 and now it is a widely accepted fact that the concentration of CO2 is the primary regulator of temperature on the Earth and leads to global warming.
.
A “drought” is an extended period of deficient rainfall relative to the statistical multi-year average for a region. But because of the various ways it is measured, an objective drought definition has yet to be produced upon which everyone can agree.
The four types are: meteorological (lack of precipitation), agricultural, (lack of moisture in the soil where crops grow), hydrological (low levels of water in lakes and reservoirs), and socioeconomic (water shortages in drinking and running water).
Only .003% of water on Earth is freshwater available for human consumption. Save water by challenging friends to only use 13 gallons of water in a day. (It’s harder than it sounds!) Sign up for 13 Gallon Challenge.
Meteorologists predict drought based on precipitation patterns, stream flow, and moisture of soil over long periods of time.
In the United States, droughts are most likely to occur in the Midwest and the South.
Water Resource Management Powerpoint Presentation SlidesSlideTeam
Discuss the process of planning, developing, and managing the optimum use of water resources by using Water Resource Management PowerPoint Presentation Slides. This Water resource system PowerPoint slideshow can be used to explain the overview of market size, growth rate, and capital expenditure of the water industry. You can present the survey data for determining water quality by using the water cycle management PPT slideshow. Demonstrate the division of the wastewater treatment market by editing our content-ready water quality monitoring PowerPoint slide deck. You can easily edit our water resources presentation to highlight the natural processes and human processes that affect water quality. Showcase the leading factors that will affect the performance of the water technology market by using water quality assurance PowerPoint visuals. Key trends that will influence the water industry in the future such as increasing regulation, failing infrastructure, greater conservation, and efficiency, etc. can also be presented with the help of our ready-to-use water management PPT visuals. Discuss how you can design an effective water quality monitoring program by downloading our professionally designed water resource management PowerPoint slides. https://bit.ly/3fb5ExJ
Fluvial Morphology handbook for students.
Contents are: definition, scope, importance of Fluvial Morphology, sediment load, channel pattern and process, role sediment to build delta, Reynolds number, Froude Number, channel pattern of Tista and Jamuna River, causes and consequences of flood, benefit of flood, flood and floodplain, hydraulic geometry, water resource management (in Bangladesh), hydrograph, origin and development of river, tributary and distributary and many more.
identification of ground water potential zones using gis and remote sensingtp jayamohan
the identification of ground water potential zones using gis and remote sensing.The study is conducted in the Muvattupuzha block.The various parameters used are geology,geomorphology,rainfall,soil type,etc.
Abstract: Geo-technical engineering as a subject has developed considerably in the past four decades. There
has been remarkable development in the fields of design, research and construction of dam. India is capable of
designing and constructing a dam that would withstand a seismic jolt. The country needs water and electricity
to provide its people good living standards. Hydropower is the solution to the country's requirements, and this
can be achieved by storing water in dams.
In the past, earthquake effects may have been treated too lightly in dam design. Are such dams safe,
and how have they fared in previous earthquakes, this Paper will be limited to the some of finding about one
concrete types.
What will happen to dams during severe earthquake shaking? It is obvious that at present engineers
cannot answer this question with any certainty. But we are very much aware of the threat of disastrous losses of
life and damage to property if dams should fail, and we are making great effort to increase our under standing
of this complex topic.
This Paper deals with the case study of totaladoh Dam Situated in Vidarbha Region of Maharashtra
for Seismic Analysis by I.S.Code method (Simple Beam Analysis method). This also includes future scope of
analyzing the same dam for Seismic safety by very accurate method i.e. finite element method.
Keywords: Earthquake, The finite element method, Indian Standard codes(I.S.Code), horizontal
seismic coefficient (αh ),Hydrostatic pressure, Seismic analysis,
Remote sensing (RS) and geographical information systems (GIS) are revolutionising irrigation management. They represent a relatively cheap and rapid method of acquiring up-to-date information over a large geographical area. and are the only practical way to obtain data from inaccessible regions. At small scales, regional phenomena which are invisible from the ground can be clearly visible. Presented at the 1st World Irrigation Forum, 2013, Mardin, Turkey.
Groundwater models are simplified representation of large and real hydrogeologic systems like river basins or watersheds. GWM is attempted to analyse the mechanisms which control the occurrence and movement of groundwater and to evaluate the policies, actions and designs which may affect the systems. These models are less complex prototypes of complex hydrogeologic systems developed using spatially varying aquifer parameters, hydrologic properties, geologic boundary conditions and positions of withdrawal wells or recharging structures. These are designed to compute how pumping or recharge might affect the local or regional groundwater levels.
The Presentation gives the overview of the process necessary for accomplishing the task for the preparation of Ground water movements and identification carried out by Rajiv gandhi national drinking water mission project.
Sustainable Water Management Powerpoint Presentation SlidesSlideTeam
Introducing Sustainable Water Management PowerPoint Presentation Slides. This Water resource system PowerPoint slideshow can be used to explain the overview of market size, growth rate, and capital expenditure of the water industry. You can discuss the process of planning, developing, and managing the optimum use of water. The survey data for determining water quality can be easily presented by using a water cycle management PowerPoint slideshow. Demonstrate the division of the wastewater treatment market by editing our content-ready water quality monitoring PowerPoint slide deck. You can easily edit our water resources presentation to highlight the natural processes and human processes that affect water quality. Key trends that will influence the water industry in the future such as increasing regulation, failing infrastructure, greater conservation, and efficiency, etc. can also be presented with the help of our ready-to-use water management PPT visuals. It is possible to present the features that describe a suitable location for the monitoring program. It is easy to explain topics like wastewater treatment process, wastewater reuse, global wastewater reuse by sector, treated wastewater quality parameter, etc by downloading this sustainable water management PowerPoint slide deck. https://bit.ly/3tEV5qm
In 2008 the world witnessed multiple crises including a food one which resulted in unrest in many areas of the world. These tensions may well foreshadow future challenges as they relate to providing sufficient food for
six, rising to nine billion people. Unless we get more intelligent in the way we manage agriculture, the world is likely to head into deeply challenging times.
Water and the good and services provided by ecosystems are part of this urgent need for an intelligent management response not least in relation to food production.
The Millennium Ecosystems Assessment report, in which
UNEP played an important role, demonstrated the links between healthy ecosystems and food production. These include providing food, water, fiber, genetic material;
regulating soil erosion, purifying water and wastes, regulating floods, regulating diseases and pests; and
supporting the formation of soil, photosynthesis and
nutrient recycling.
Water is an integral part of ecosystems functioning. Its
presence or absence has a bearing on the ecosystemsservices they provide. Relatively larger amounts of water are used to generate the ecosystem services needed to
ensure provisioning of basic supplies of food, fodder and
fibers. Today rainfed and irrigated agriculture use 7,600
of freshwater globally to provide food. An additional
1,600 km3 of water is required annually to meet the
millennium development goal on hunger reduction which addresses only half of the people suffering from hunger.
.
A “drought” is an extended period of deficient rainfall relative to the statistical multi-year average for a region. But because of the various ways it is measured, an objective drought definition has yet to be produced upon which everyone can agree.
The four types are: meteorological (lack of precipitation), agricultural, (lack of moisture in the soil where crops grow), hydrological (low levels of water in lakes and reservoirs), and socioeconomic (water shortages in drinking and running water).
Only .003% of water on Earth is freshwater available for human consumption. Save water by challenging friends to only use 13 gallons of water in a day. (It’s harder than it sounds!) Sign up for 13 Gallon Challenge.
Meteorologists predict drought based on precipitation patterns, stream flow, and moisture of soil over long periods of time.
In the United States, droughts are most likely to occur in the Midwest and the South.
Water Resource Management Powerpoint Presentation SlidesSlideTeam
Discuss the process of planning, developing, and managing the optimum use of water resources by using Water Resource Management PowerPoint Presentation Slides. This Water resource system PowerPoint slideshow can be used to explain the overview of market size, growth rate, and capital expenditure of the water industry. You can present the survey data for determining water quality by using the water cycle management PPT slideshow. Demonstrate the division of the wastewater treatment market by editing our content-ready water quality monitoring PowerPoint slide deck. You can easily edit our water resources presentation to highlight the natural processes and human processes that affect water quality. Showcase the leading factors that will affect the performance of the water technology market by using water quality assurance PowerPoint visuals. Key trends that will influence the water industry in the future such as increasing regulation, failing infrastructure, greater conservation, and efficiency, etc. can also be presented with the help of our ready-to-use water management PPT visuals. Discuss how you can design an effective water quality monitoring program by downloading our professionally designed water resource management PowerPoint slides. https://bit.ly/3fb5ExJ
Fluvial Morphology handbook for students.
Contents are: definition, scope, importance of Fluvial Morphology, sediment load, channel pattern and process, role sediment to build delta, Reynolds number, Froude Number, channel pattern of Tista and Jamuna River, causes and consequences of flood, benefit of flood, flood and floodplain, hydraulic geometry, water resource management (in Bangladesh), hydrograph, origin and development of river, tributary and distributary and many more.
identification of ground water potential zones using gis and remote sensingtp jayamohan
the identification of ground water potential zones using gis and remote sensing.The study is conducted in the Muvattupuzha block.The various parameters used are geology,geomorphology,rainfall,soil type,etc.
Abstract: Geo-technical engineering as a subject has developed considerably in the past four decades. There
has been remarkable development in the fields of design, research and construction of dam. India is capable of
designing and constructing a dam that would withstand a seismic jolt. The country needs water and electricity
to provide its people good living standards. Hydropower is the solution to the country's requirements, and this
can be achieved by storing water in dams.
In the past, earthquake effects may have been treated too lightly in dam design. Are such dams safe,
and how have they fared in previous earthquakes, this Paper will be limited to the some of finding about one
concrete types.
What will happen to dams during severe earthquake shaking? It is obvious that at present engineers
cannot answer this question with any certainty. But we are very much aware of the threat of disastrous losses of
life and damage to property if dams should fail, and we are making great effort to increase our under standing
of this complex topic.
This Paper deals with the case study of totaladoh Dam Situated in Vidarbha Region of Maharashtra
for Seismic Analysis by I.S.Code method (Simple Beam Analysis method). This also includes future scope of
analyzing the same dam for Seismic safety by very accurate method i.e. finite element method.
Keywords: Earthquake, The finite element method, Indian Standard codes(I.S.Code), horizontal
seismic coefficient (αh ),Hydrostatic pressure, Seismic analysis,
Remote sensing (RS) and geographical information systems (GIS) are revolutionising irrigation management. They represent a relatively cheap and rapid method of acquiring up-to-date information over a large geographical area. and are the only practical way to obtain data from inaccessible regions. At small scales, regional phenomena which are invisible from the ground can be clearly visible. Presented at the 1st World Irrigation Forum, 2013, Mardin, Turkey.
Groundwater models are simplified representation of large and real hydrogeologic systems like river basins or watersheds. GWM is attempted to analyse the mechanisms which control the occurrence and movement of groundwater and to evaluate the policies, actions and designs which may affect the systems. These models are less complex prototypes of complex hydrogeologic systems developed using spatially varying aquifer parameters, hydrologic properties, geologic boundary conditions and positions of withdrawal wells or recharging structures. These are designed to compute how pumping or recharge might affect the local or regional groundwater levels.
The Presentation gives the overview of the process necessary for accomplishing the task for the preparation of Ground water movements and identification carried out by Rajiv gandhi national drinking water mission project.
Sustainable Water Management Powerpoint Presentation SlidesSlideTeam
Introducing Sustainable Water Management PowerPoint Presentation Slides. This Water resource system PowerPoint slideshow can be used to explain the overview of market size, growth rate, and capital expenditure of the water industry. You can discuss the process of planning, developing, and managing the optimum use of water. The survey data for determining water quality can be easily presented by using a water cycle management PowerPoint slideshow. Demonstrate the division of the wastewater treatment market by editing our content-ready water quality monitoring PowerPoint slide deck. You can easily edit our water resources presentation to highlight the natural processes and human processes that affect water quality. Key trends that will influence the water industry in the future such as increasing regulation, failing infrastructure, greater conservation, and efficiency, etc. can also be presented with the help of our ready-to-use water management PPT visuals. It is possible to present the features that describe a suitable location for the monitoring program. It is easy to explain topics like wastewater treatment process, wastewater reuse, global wastewater reuse by sector, treated wastewater quality parameter, etc by downloading this sustainable water management PowerPoint slide deck. https://bit.ly/3tEV5qm
In 2008 the world witnessed multiple crises including a food one which resulted in unrest in many areas of the world. These tensions may well foreshadow future challenges as they relate to providing sufficient food for
six, rising to nine billion people. Unless we get more intelligent in the way we manage agriculture, the world is likely to head into deeply challenging times.
Water and the good and services provided by ecosystems are part of this urgent need for an intelligent management response not least in relation to food production.
The Millennium Ecosystems Assessment report, in which
UNEP played an important role, demonstrated the links between healthy ecosystems and food production. These include providing food, water, fiber, genetic material;
regulating soil erosion, purifying water and wastes, regulating floods, regulating diseases and pests; and
supporting the formation of soil, photosynthesis and
nutrient recycling.
Water is an integral part of ecosystems functioning. Its
presence or absence has a bearing on the ecosystemsservices they provide. Relatively larger amounts of water are used to generate the ecosystem services needed to
ensure provisioning of basic supplies of food, fodder and
fibers. Today rainfed and irrigated agriculture use 7,600
of freshwater globally to provide food. An additional
1,600 km3 of water is required annually to meet the
millennium development goal on hunger reduction which addresses only half of the people suffering from hunger.
A look at how nature provides us with services and how valuing these services is important to well-being. Slideshow from Millennium Ecosystem Assessment, UNEP
Mobile now represents an impressive amount of online traffic. In 2015, it surpassed desktop for Google searches worldwide. In 2016, this mobile trend will only dominate more of the online activity of consumers. Businesses need to know how to capture and leverage these consumers and turn them into clients.
In this presentation she will discuss:
– Mobile in a modern world
– Behavioral differences between desktop and mobile device users
– Marketing trends to take advantage of
– Tips to win in at local in a mobile world
Attend this session and you’ll walk away with strategies for delivering an exceptional local mobile experience for your customers and their customers.
The Facebook Application Market, by Tim OreillyDave McClure
Tim O'Reilly presents his perspectives & an in-depth report on the State of the Facebook Application Market, from his presentation at the Graphing Social Patterns conference on 10/08/07.
Prestamos servicios de asesorias en ventasJunior Almenar
Tenemos Conocimiento en el manejo de Canales de Ventas PyME en el area de operadora Telefonica Movistar, unimos experiencia con la actualidad formando aptitudes para el vendedor de Hoy.
Ligando o nosso futuro com tempo, clima e águaRobson Peixoto
Conteúdo
Prefácio
Conhecimento para a Acção Climática
Segurança Alimentar e Agricultura
Recursos hídricos e os riscos de água
Clima e Saúde
Redução do Risco de Desastres
Transportes, Comércio e Turismo
Energia e Clima
Cidades Sustentáveis
Alimentação e Mobilizar o Futuro
Masters degree, royal roads university, final field research thesis 2007 k.ru...Kevin D. Rumsey
Having over 25 years’ experience in water and environmental management, both in northern Canada with government and overseas water experience in conflict and disaster regions, I am well positioned to assist decision-makers with:
Harnessing nature to protect our communities.
"Natural Defenses in Action" highlights the important role that natural and nature-based approaches can play in reducing the mounting risks to our communities from weather and climate-related natural hazards. The report highlights how properly managed ecosystems and well-designed policies can help reduce disaster risk in ways that are good for both people and nature. "Natural Defenses in Action" profiles a dozen case studies that highlight best-in-class examples of how natural defenses are being put to use to avoid or reduce risks from flooding, coastal storms, erosion, and wildfire. It illustrates that harnessing nature to protect people and property is not just a good idea—it already is being done across the country!
An Ecosystems Approach to Water and Food SecurityAFRIKASOURCES
Recognising healthy ecosystems as the basis for sustainable water resources and stable food security can help produce more food from each unit of agricultural land, improve resilience to climate change and provide economic benefits for poor communities, according to a new report from the United Nations Environment Programme (UNEP) and the International Water Management Institute (IWMI), in partnership with 19 other organizations.
More: http://unep.org/newscentre/Default.aspx?DocumentID=2649&ArticleID=8834&l=en
Catching the Rain - A Great Lakes Resource Guide
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For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children =
http://scribd.com/doc/239851214 ~
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Double Food Production from your School Garden with Organic Tech =
http://scribd.com/doc/239851079 ~
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Free School Gardening Art Posters =
http://scribd.com/doc/239851159 ~
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Increase Food Production with Companion Planting in your School Garden =
http://scribd.com/doc/239851159 ~
`
Healthy Foods Dramatically Improves Student Academic Success =
http://scribd.com/doc/239851348 ~
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City Chickens for your Organic School Garden =
http://scribd.com/doc/239850440 ~
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Simple Square Foot Gardening for Schools - Teacher Guide =
http://scribd.com/doc/239851110 ~
Promoting a culture of reading in Africa is essential for fostering ,critical...Christina Parmionova
Promoting a culture of reading in Africa is essential for fostering ,critical thinking, creativity and lifelong learning. Under Agenda 2063, the African Union's Continental Education Strategy for Africa (CESA 16-25) aims to ensure inclusive, equitable quality education and promote lifelong learning opportunities for all, fostering skills and sustaining human capital, to achieve the Africa We Want.
Investing in African Youth future through the Pan African University (PAU).Christina Parmionova
The African Union is investing in its future through the Pan African University (PAU)
PAU is a leading institution for:
1. High-Quality Education
2. Cutting-Edge Research
3. Entrepreneurial Spirit
Building education systems that Africans with the skills and knowledge they n...Christina Parmionova
The African Union is building education systems that:
1. Africans with the skills and knowledge they need to succeed.
2. Drive Innovation and tackle Africa's challenges.
3.Fuel the Global Knowledge Economy.
Want to learn more?
To build a brighter future for Africa, we must transform education financing by:
1.Mobilizing More Resources: Increase funding from both domestic and international sources.
2.Enhancing Efficiency and Equity: Ensure fair and effective allocation and use of educational resources.
3.Improving Data and Accountability: Strengthen data collection and accountability measures in education financing.
Join us in this crucial effort!
“Educate an African fit for the 21st Century: Building resilient education sy...Christina Parmionova
In line with the AU theme of the year "Education Fit for the 21st Century," engage in discussions, share your ideas, and help us transform education across all our social media platform. Here's how you can participate: Share your thoughts and ideas on how education can be transformed to meet the needs of the 21st century; To Highlight educational initiatives and programs that are making a difference in your community or country. To Discuss the importance of education in driving socio-economic development and creating opportunities for all Africans.
Let’s renew our pledge to stand with all Africans in their quest to lead thei...Christina Parmionova
“On Africa Day, we celebrate this dynamic and diverse continent and the contributions of Africans to our world. Throughout, Africa must have a seat at every multilateral forum — including the UN Security Council, the international financial system, and other global norm-setting structures. September’s Summit of the Future in New York will be a moment to create momentum and progress. On Africa Day, let’s renew our pledge to stand with all Africans in their quest to lead their continent — and our world — into a peaceful and prosperous future for all.” Read the full Statement of the United Nations Secretary-General on the occasion of Africa Day 2024, May 25th.
Preserving Cultural Diversity is preserving what makes us human.Christina Parmionova
"Preserving Cultural Diversity is preserving what makes us human.'' World Day of Cultural Diversity for Dialogue and Development 2024. Culture is who we are and what shapes our identity. No development can be sustainable without including culture. The day is an occasion to promote culture and highlight the significance of its diversity as an agent of inclusion and positive change. It represents an opportunity to celebrate culture’s manifold forms, from the tangible and intangible, to creative industries, to the diversity of cultural expressions, and to reflect on how these contribute to dialogue, mutual understanding, and the social, environmental and economic vectors of sustainable development.
The term biodiversity (from “biological diversity”) refers to the variety of life on Earth at all its levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that sustain life.
Frequently Asked Questions - What are the main drivers of biodiversity loss?Christina Parmionova
From nature-based solutions to climate, health issues, food and water security, and sustainable livelihoods, biodiversity is the foundation upon which we can build back better.
Biodiversity includes not only species we consider rare, threatened, or endangered but also every living thing—from humans to organisms we know little about, such as microbes, fungi, and invertebrates. Biodiversity remains the answer to several sustainable development challenges.
Citizens & civil society. here's how you can act to be part of the plan.Christina Parmionova
The Biodiversity Plan offers opportunities for cooperation and partnerships among diverse actors. Governments, indigenous peoples and local communities, non-governmental organizations, lawmakers, businesses, and individuals are encouraged to highlight the ways in which they are supporting the implementation of the Biodiversity Plan.
#Bepartoftheplan on International Day For Biological Diversity 2024Christina Parmionova
on May 22nd at United Nations Headquarters, the Secretariat of the Convention on Biological Diversity, the United Nations Biodiversity, the IPBeS, the UNESCO Man and the biosphere (MAB) programme, the UN Environment, the UNDP, the UNCCD, the UNFCCC, the UNEP/CMS, the CITES Secretariat, the FAO, the Ramsar secretary and the World Wildlife Fund (WWF) will celebrate the International Day For Biological Diversity 2024 along with the United Nations Member States, governments, indigenous peoples, local communities, non-governmental organizations and concerned individuals are to debate on the theme.
What are the main advantages of using HR recruiter services.pdfHumanResourceDimensi1
HR recruiter services offer top talents to companies according to their specific needs. They handle all recruitment tasks from job posting to onboarding and help companies concentrate on their business growth. With their expertise and years of experience, they streamline the hiring process and save time and resources for the company.
Putting the SPARK into Virtual Training.pptxCynthia Clay
This 60-minute webinar, sponsored by Adobe, was delivered for the Training Mag Network. It explored the five elements of SPARK: Storytelling, Purpose, Action, Relationships, and Kudos. Knowing how to tell a well-structured story is key to building long-term memory. Stating a clear purpose that doesn't take away from the discovery learning process is critical. Ensuring that people move from theory to practical application is imperative. Creating strong social learning is the key to commitment and engagement. Validating and affirming participants' comments is the way to create a positive learning environment.
Attending a job Interview for B1 and B2 Englsih learnersErika906060
It is a sample of an interview for a business english class for pre-intermediate and intermediate english students with emphasis on the speking ability.
RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...BBPMedia1
Marvin neemt je in deze presentatie mee in de voordelen van non-endemic advertising op retail media netwerken. Hij brengt ook de uitdagingen in beeld die de markt op dit moment heeft op het gebied van retail media voor niet-leveranciers.
Retail media wordt gezien als het nieuwe advertising-medium en ook mediabureaus richten massaal retail media-afdelingen op. Merken die niet in de betreffende winkel liggen staan ook nog niet in de rij om op de retail media netwerken te adverteren. Marvin belicht de uitdagingen die er zijn om echt aansluiting te vinden op die markt van non-endemic advertising.
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2. UNEP promotes
environmentally sound practices
globally and in its own activities. This
publication is printed on 100% recycled paper
using vegetable-based inks and other eco-
friendly practices. Our distribution policy aims to
reduce UNEP’s carbon footprint.
3. Water security and ecosystem services:
The critical connection
A Contribution to the United Nations
World Water Assessment Programme (WWAP)
United Nations Environment Programme
Nairobi, Kenya
March, 2009
4. ACKNOWLEDGEMENTS
This document represents the collective expertise of a completion. These individuals, listed alphabetically, include
diverse group of individuals concerned with ecosystem Gunilla Björklund (Sweden), Marti Colley (Panama), Mogens
degradation, and the continuing loss of the services Dyhr-Nielsen (Denmark), Mohan Kodarkar (India), Hillary
provided by these ecosystems. Attention is given to Masundire (Botswana) and Jeffrey Thornton (USA). The
aquatic ecosystems because of water`s fundamental role advice offered by David Coates (Convention on Biological
as the `blood` of ecosystem structure and functions, and Diversity), David Molden (IWMI) and David Tickner (IUCN) in
an engine of economic production. These characteristics regard to the content and form of this report is also gratefully
make the goal of maintaining ecosystem services and acknowledged. The enormous contribution of Walter Rast
water security a complementary and overlapping task. It is under tight timeframes is highly appreciated, having ably
hoped the contents of this report, which was developed as put the publication together in this form. The enormous
a contribution to the 3rd World Water Development Report, contribution of Walter Rast, who put the publication together
will facilitate more in-depth discussion on these important under tight timeframes, is highly appreciated. The many
life-supporting topics. valuable comments and suggestions provided by a range of
reviewers, both within and outside the UNEP family, are also
In view of the importance of water security in supporting greatly appreciated, as is the last-minute editing and design
human survival and economic livelihoods, as well as water work by Peter Hulm and Nikki Meith.
needs of the ecosystems providing these services, the
efforts of the Working Group in preparing this report are The hard work and perseverance of all these individuals
gratefully acknowledged. Their hard work and insightful made the preparation of this report possible, and sincere
contributions to this effort were the primary reason for its thanks go to all of them.
2 WATER SECURITY AND ECOSYSTEM SERVICES
5. FOREWORD
We live in a world of ecosystems – and our existence
would not be possible without the life-supporting services
they provide. Properly-functioning ecosystems in turn are
fundamentally related to water security. This report, although
brief in content, is meant to serve as food for thought about
the linkages and interactions between human survival and
well-being, and about the ecosystem services and water
security that result from these linkages and interactions.
This complex topic requires discussion at many levels of
government, society and science. Continuing experience
around the world, however, highlights the fact that water
security and ecosystem services must be viewed with
the same degree of importance in national development
programmes as do social welfare and economic growth.
These considerations are also relevant to achieving the
targets outlined in the Millennium Development Goals
(MDGs). Unfortunately, however, the results of the Millennium
Ecosystem Assessment clearly illustrate that we are failing
to recognize these linkages and ensure their sustainability.
Instead, humanity is continuing to overexploit and pollute
ecosystems throughout the world, and at all scales.
This report makes the link between sustainable development
and ecosystem services, highlighting that the former is sustainability and water security must be pursued vigorously
not possible without the latter. Economic development and in a timely manner, since it could take decades before
in turn requires an adequate natural resources base, and we master the political, institutional and technical aspects
humans are constantly engaged in activities to access these that enable humanity to use the full potential of ecosystem
resources. The dilemma is that the activities involved in management for water security. This report is meant to
accessing and using these resources, although directed to highlight this reality, and to provide examples of cases in
beneficial uses, also have the potential to negatively impact which various measures were used to facilitate ecosystem
the very ecosystems that provide them in the first place. sustainability and water security. Although only providing a
Thus, activities that result in ecosystem degradation can be brief discussion of these important issues, it is hoped this
significant constraints to sustainable development. report will provide the impetus necessary for governments,
non-governmental organizations, industry, agriculture and
The role of water security in addressing ecosystem other ecosystem services stakeholders to consider such
sustainability is fundamental to this goal. As discussed in issues in addressing both our short-term needs and our
this report, continued provision of ecosystem services for long-term goals.
human welfare and economic development is dependent
on properly-functioning and sustainable ecosystem Achim Steiner
services. Further, water security is at the core of sustainable Under Secretary General of the United Nations
ecosystem management,.. The dual goal of ecosystem and Executive Director of UNEP
THE CRITICAL CONNECTION 3
12. ... humans have changed ecosystems more rapidly and
more extensively during the past half-century than ever
before in human existence.
By way of illustration (Figure 1), ecosystem provisioning purification, and disease regulation. supporting services
services encompass the products obtained from underlie the sustainability of all the above-noted services,
ecosystems, including food, freshwater, timber and fuel including nutrient cycling, soil formation and primary
wood, fibres and genetic resources, while non-material production.
benefits obtained from ecosystems comprise cultural
services, including recreation, transport, ecotourism, The MA assessed ecosystem changes within the context
spiritual, religious and aesthetic uses, education, cultural of several determinants and constituents of human well-
heritage, and a ‘sense of place. Ecosystem regulation being. These include: (1) security – referring to the strength
services includes the benefits to be derived from the role of of the social structure of a community, and to its material
the environment in climate regulation, flood alleviation, water well-being, both of which can be influenced by changes
Figure 1. Linkages between ecosystem services and human well-being.
10 WATER SECURITY AND ECOSYSTEM SERVICES
14. ... demand for ecosystem services around the world
is now so great that trade-offs between ecosystem
services ... are becoming increasingly necessary.
In an often-cited example, Costanza et al. (1997) provided resource managers to secure the resilience of ecosystems.
an estimate of the value of the world’s ecosystem services
and natural capital, and the benefits to be derived from In addition, to meet growing demands for freshwater, food,
them. Based on their work, the estimated economic value fibre, fuel, etc., humans have changed ecosystems more
of 17 ecosystem services provided by 16 biomes averaged rapidly and more extensively during the past half-century
US$ 33 trillion per year. The aquatic biomes examined in than ever before. Although these changes have contributed
their study (both marine and freshwater) made up about to human well-being and economic development, they
US$ 27 trillion of this total estimate. This compares to also have resulted in substantial ecosystem degradation
a total GDP, of all the countries in the world combined, in many locations. They have reduced global biodiversity,
of approximately US $17 trillion during the study period. as well as exacerbated the poverty of some groups of
Although some assumptions used in determining the people, particularly the rural poor who often depend directly
economic value of specific ecosystem services in the study on ecosystem services for their economic survival and
have been questioned, there is no doubt that the total value livelihoods.
of ecosystem services provided to humanity totals in the
tens of trillions of dollars annually. Even more significant was the conclusion that the demand
for ecosystem services around the world is now so great
Against this background, the MA reached a number of that trade-offs between ecosystem services (e.g., conversion
important conclusions regarding ecosystem changes on a of forests to agricultural land, with attendant gains in some
global scale, many with distressing long-term implications ecosystem services at the expense of perhaps even more
(MA, 2005a). Fifteen (60%) of the 24 ecosystem services important supporting or regulating services) are becoming
examined in the MA are being used in an unsustainable increasingly necessary. Assuming a continuing trend in this
manner, resulting in pollution, degradation and over- direction, the MA concludes that future generations will
exploitation. Further, human-induced ecosystem changes experience a substantial reduction in the human benefits to
are increasing the possibility of non-linear changes in be derived from these ecosystem services. It also means
ecosystems (e.g., accelerating or reversing trends) with that future efforts may have to be directed to balancing
potentially significant consequences regarding their ability between ecosystem services in some locations and under
to provide life-supporting ecosystem services to humanity. some circumstances, particularly when they are being
This observation highlights the great responsibility of natural overexploited or degraded.
12 WATER SECURITY AND ECOSYSTEM SERVICES
16. The top four groups of organisms facing
extinction ... are aquatic species.
The results of misusing water resources, and resulting was of “paramount importance for action in the 1990s and
ecosystem degradation and its impacts on ecosystem beyond”. This conclusion included recognition of freshwater
services, illustrate the negative impacts of non-sustainable as a finite and vulnerable resource, and the need to integrate
water use. Water systems are very sensitive to human the water plans and programs of different water-use sectors
activities in their surrounding drainage basins. Lakes, for into social and economic policies on a national scale. In the
example, are sinks for inputs of water, and the materials and freshwater chapter of Agenda 21, the governments defined
pollutants carried in it, thereby being sensitive barometers IWRM as a process based on water being “an integral
of human activities in their surrounding watersheds (ILBM, part of the ecosystem, a natural resource and a social and
2005). Nor does the concern rest solely with direct human economic good, whose quantity and quality determine the
water uses. The top four groups of organisms facing nature of its utilization.” The Global Water Partnership (GWP,
extinction, for example, are aquatic species (WWDR, 2003). 2000) provided a more operational definition of IWRM as a
Consequently, the degradation or elimination of ecosystem methodology that promotes the coordinated development
services because of the unsustainable use of ecosystems is and management of water, land and related resources
usually readily visible where water resources are concerned. in order to “maximize the resultant economic and social
welfare in an equitable manner without compromising the
sustainability of vital ecosystems.” IWRM views watersheds
Sustainable ecosystem services and in a comprehensive manner – within the context of their
Integrated Water Resources Management geographic position in the landscape, and the entirety of
(IWRM) their human influences and ecosystem functions.
In addition to being an essential requirement for human The integrated approach embodied within the concept of
survival and a fuel for economic development, as the IWRM marks a fundamental departure from the perspective
‘life blood’ of ecosystem functioning, water is therefore of water as a commodity, to one that considers all major
fundamental to sustainable ecosystem services. Water water uses on an equal basis, including the water needs
management therefore translates into managing ecosystem of nature. It collectively considers both the scientific
services, and must be a fundamental goal of virtually all and technical elements of water management (e.g.,
such efforts. water quantity and quality; geology; physiography and
topography; flora; fauna; water supply and demands),
With this goal in mind, and the need to address the and the socioeconomic components (often referred to
continuing degradation and over-exploitation of aquatic as water governance, and including such elements as
ecosystems, the concept of Integrated Water Resources institutions, regulations, policy, public awareness, financial
Management (IWRM) has gained increasing acceptance concerns, cultural values, political realities, etc.). The
by water stakeholders and decision-makers, both in the distinction between these two groupings is that the former
international water arena and on the national level. Touched fundamentally define and describe the quantity, quality
upon in varying degrees since the 1972 UN Conference on and location of water resources (what; where), while the
the Human Environment, the concept of IWRM was more latter represent elements that fundamentally control or
firmly grasped at the 1992 UN Conference on Environment define how and why humans use their water resources.
and Development (United Nations, 1992). Among the Although more qualitative in nature, and more difficult to
water-related observations arising from this ‘Earth Summit,’ identify and assess, these latter elements are fundamentally
convened to adopt the principles for sustainability action in important in developing and implementing sustainable water
the 21st century known as Agenda 21, was the recognition management programs. The International Lake Environment
that the degree to which human social well-being and Committee (ILEC, 2005) also evaluated the importance and
economic productivity was dependent upon development of interrelations of the scientific and socioeconomic elements
water resources was often not appreciated. Further, it was within the latter elements within the context of integrated
concluded that a holistic approach to water management lake basin management (ILBM).
14 WATER SECURITY AND ECOSYSTEM SERVICES
17. As promulgated by the Global Water Partnership (GWP, to be simultaneously considered with this approach.
2000), IWRM focuses on three main goals, including: (i) Nevertheless, the desirability of an integrated water
maximizing economic efficiency in water use in response resources management approach was highlighted at
to increasing water demands; (ii) equity in the basic access the 2002 Johannesburg World Summit on Sustainable
of people to water resources; and (iii) environmental and Development, with the request that countries develop
ecological sustainability, which translates into managing IWRM-based ‘water efficiency plans’ as a means of
water systems so as not to undermine their ecosystem facilitating the management of their freshwater resources for
services. Achieving these goals requires, among other sustainable use. The Global Water Partnership (2004, 2006)
elements: (i) a general enabling framework comprising subsequently provided two interim reports on the progress
policies, legislation, regulations and information; (ii) of this effort. UN-Water (2008) subsequently completed
institutional roles and functions of various administrative a more comprehensive status report on IWRM plans on
levels and stakeholders; and (iii) operational management a global scale for the 16th Session of the Commission
instruments for regulating, monitoring and enforcement for on Sustainable Development. Although these efforts
decision-makers. The cross-sectoral integration of these have indicated mixed results to some degree, the overall
elements as they relate to various water needs also was indications are that this request is being seriously pursued by
stressed, including water for maintaining ecosystem services governments in many countries around the world.
(e.g., “water for nature” in Figure 3).
The scientific literature contains many examples of the use
Many governments and agencies have struggled to of economic instruments, institutional and policy reforms,
effectively implement IWRM for water systems around political structures, etc., to address human uses of water
the world. This difficulty is attributable to the many resources. A continuing concern of many, however, is
complex scientific, socioeconomic and financial elements that although considerable attention has been given to
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Figure 3. Integrated Water Resources Management (IWRM) and its cross-sectoral integration. (Source: GWP 2000)
THE CRITICAL CONNECTION 15
18. ... every time we access, develop, transport or utilize water
resources, we leave an impact that may degrade the
service provided by the river, lake, wetland or groundwater
aquifer that supplied the water in the first place.
human water needs for drinking water and sanitation, the variability among all living organisms and the range of
food production and industry (Figure 3), less attention ecosystems in which they reside, and refers to diversity
has been given to the ‘environmental and ecological at a number of scales, including genetic, species and
sustainability’ element, the ultimate focus of which is ecosystems. The importance of biodiversity is that many of
sustainable ecosystem services. On the basis of the its products are ecosystem services (e.g., food). Biodiversity
previous discussion of the foundational role of ecosystem changes, therefore, can influence the provision of ecosystem
services in supporting human life and well-being, it could services.
readily be argued that if the environmental components
providing ecosystem services are not maintained or are The Earth’s ecosystems could not function without adequate
degraded by human activities, the existence of the entire supplies of water of suitable quality. However, every time
water sub-sector structure is at risk. Thus, the need to we access, develop, transport or utilize water resources, we
effectively manage ecosystems and their services has leave an impact that may degrade the service provided by
far-reaching implications for human health, well-being and the river, lake, wetland or groundwater aquifer that supplied
economic stability. Yet, environmental concerns in general, the water in the first place. Water security, therefore,
and ecosystem services in particular, are often afterthoughts depends on how well we can address disturbances to these
in economic development, or are not incorporated into water systems which can, in turn, affect their services.
development and economic policies until late in the process,
if at all, thereby ensuring they are often inadequately Because the notion of an ecosystem represents a useful
addressed. Further complicating the situation is that framework to consider the many linkages between humans
ecosystem degradation is often an incremental process, and their environment, a so-called ‘ecosystem approach’
with each stage of degradation proceeding at such a rate has been advocated by many organizations and individuals
that small changes can go unnoticed for long periods of as a means of addressing the interrelations between water,
time, ultimately culminating in major environmental impacts. land, air, and all living organisms, and encompassing
Glantz (1999), for example, highlighted the ‘creeping’ nature ecosystems and their services. This concept was previously
of environmental degradation, and particularly the manner in advocated, for example, by the International Joint
which many problems related to the demise of the Aral Sea Commission to the governments of the United States and
became evident. Canada within the context of the 1978 Great Lakes Water
Quality Agreement, as a means of restoring and maintaining
Current water resources management practices do not the chemical, physical and biological integrity of the waters
consider all relevant ecosystem services, even in those of the Great Lakes Basin Ecosystem (Great Lakes Research
situations in which IWRM is applied. As a result, many Advisory Board, 1978). Used in varying ways by others in
management efforts only focus on selected services. One the interim, the ecosystem approach was formally proposed
clear conclusion is that IWRM must balance all ecosystem in 2000 by the 5th Conference of Parties to the Convention
services to be most effective. Further, it must assess of Biological Diversity as a “strategy for the integrated
mechanisms that consider both present and alternative management of land, water and living resources that
future ecosystem services, including steps to improve promotes conservation and sustainable use in an equitable
ecosystem resilience and decrease vulnerability, particularly way”. The conservation of ecosystem structure and function
as regards the very poor. was a priority of this approach, as it was in the MA (2003).
The Conference of Parties also provided 12 principles of
the ecosystem approach, including the need to understand
An ecosystem approach to water resources and manage an ecosystem in an economic context, at
management appropriate spatial and temporal scales, and in consultation
with all relevant sectors of society and scientific disciplines
Ecosystems and biological diversity (biodiversity) are (CBD, 2009). An integrated ecosystem approach is therefore
closely related concepts (MA, 2003). Diversity represents crucial to maintaining both ecosystem health and our own.
16 WATER SECURITY AND ECOSYSTEM SERVICES
20. Continuing evidence of the economic development benefits
inherent in sustaining ecosystem services, as well as
ensuring the water security required to provide them ...
makes it appropriate to take action to develop them.
aquatic ecosystems and their resources and diversity of ‘pay’ for excessive use, or degradation, of ecosystem
existing and potential services. services, typically applicable to industry and similar
water users.
• Pollution control – Reducing the load of contaminants
emanating from point and nonpoint sources, including The MA highlighted continuing ecosystem degradation
water reuse and recycling and pollution reduction at through the world, particularly its significant consequences
the source, as well as preventing the entry of such on the ability of ecosystems to continue to deliver life-
polluting materials into receiving water systems through supporting services. It also highlighted water systems as
nonpoint-source best management practices (e.g., being very sensitive to such disruptions.
buffer strips; conservation tillage; detention basins;
grassed waterways). Ironically, water security also is a unifying element in that it
supplies people with drinking water, sanitation, food and
• Ecohydrology and phytoremediation – Using natural fish, industrial resources, energy, transportation and natural
hydrology, or the ability of specific aquatic organisms, to aesthetic amenities, all of which depend on maintaining
reduce the impacts of pollution on aquatic ecosystems, ecosystem health and productivity. Continuing evidence of
or to reverse the adverse effects of these pollutants. the economic development benefits inherent in sustaining
ecosystem services, as well as ensuring the water security
• Habitat rehabilitation – Undertaking reconstruction required to provide them – in contrast to the continuing
and similar activities to rehabilitate aquatic ecosystems negative impacts of not considering these concepts – makes
and related natural habitats (e.g., bank reconstruction, it appropriate to take action to develop them.
artificial wetlands) to preserve or restore a range of
ecosystem functions. To this end, governments and other relevant organizations
take all necessary action to ensure ecosystem services and
• Conjunctive use of surface and groundwater water security – even if done step-by-step, and we learn
– Utilizing a combination of surface and groundwater through trial and error.
to meet human water demands in a manner that
maximizes the sustainable use of both water sources. The primary lessons learned from our management of water-
related ecosystems to date are that:
• Watershed management – Utilizing structural or non-
structural approaches within the context of IWRM or • Continued provision of ecosystem services for
other management framework designed specifically to human welfare is dependent on sustainable and
prevent or reduce degradation of aquatic ecosystems, properly functioning ecosystems; and
or to rehabilitate already-degraded aquatic ecosystems.
• Water security is at the core of management of
• Water demand management – Implementing policies sustainable ecosystems.
to control consumer demands for water resources,
and specifically managing the distribution of, or access The next chapter provides case studies of various
to, water on the basis of needs, including allocating programmes and activities undertaken to address specific
existing water resources according to a hierarchy ecosystem degradation issues, with the goal of restoring
of neediness, rather than increasing the quantity of degraded or damaged ecosystem services. Although not
available water. all were undertaken within the larger framework of IWRM,
they provide examples showing that properly-functioning
• Payment for ecosystem goods and services – ecosystems, and the services they provide, remain
Employing economic instruments (incentives, penalties, central to human society on a local, national and even
user fees, licenses, etc.) to compensate or otherwise regional scale.
18 WATER SECURITY AND ECOSYSTEM SERVICES
22. ... virtually all ecosystems provide multiple services, both
for meeting human needs and maintaining other living
organisms.
learned in regard to the problems specific to the water
system being discussed, these case study summaries also HABITAT REHABILITATION
offer general lessons that can be used to facilitate effective
management of similar aquatic systems for sustainable use. 1. Aral Sea (Central Asia)
Source: Syr Darya River Contribution to Habitat
Lessons learned from case studies Rehabilitation in the Northern Aral Sea, contributed by
Gunilla Björklund, Akkadia Consulting, Stockholm
In discussing the case studies in this section, it is noted
that virtually all ecosystems provide multiple services, both The Aral Sea is located in Central Asia in the former
for meeting human needs and maintaining other living Soviet republics of Kazakhstan and Uzbekistan. Formerly
organisms. The examples presented here, however, may the site of a thriving fishing and agricultural industry, a
focus on measures taken to address one or only a few of management system was imposed diverting water from
these needs, even though the measures may have been the influent Syr Darya and Amu Darya rivers for irrigation
formulated and implemented within the context of more of cotton. The quantity of water used for irrigation
comprehensive management programmes. In this way, the along the rivers doubled between 1965 and 1986,
results of specific management activities can be more easily resulting in serious economic, social and environmental
highlighted, and the lessons learned from them more easily damage. Drinking water supplies became polluted and
identified. The case study summaries are grouped below on human health problems increased sharply. The salinity
the basis of the primary ecosystem management approach and pollution levels rose dramatically, and the Aral Sea
being discussed. The full case studies are provided as decreased to 10% of its former size. In 1989 the Aral
separate background material to this report. Sea split into a small Northern Aral Sea in the territory of
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Figure 4. Location of case study water systems
20 WATER SECURITY AND ECOSYSTEM SERVICES
24. The restored lake ecosystem has facilitated the return
of Irrawady dolphins, resulting in community-based
ecotourism as an alternative income source for unemployed
youth in lakeside communities.
2. Chilika Lake (India) proliferation of invasive species, and reduced lake surface
area. Excessive growths of invasive freshwater weeds and
Source: Chilika Lake, Orissa, India, contributed by Mohan the proliferation of pollution-tolerant fish species with little
Kodarkar, Indian Association of Aquatic Biologists (IAAB), commercial value have decreased the biodiversity of the lake
Hyderabad, India fisheries, with negative impacts on the economic livelihoods
of the fishermen communities surrounding the lake. The
Chilika Lake is the largest coastal brackish water lagoon in introduction of aquaculture by the corporate sector also
India, situated along its eastern coast. This fragile aquatic has impacted traditional fishing, resulting in violent conflicts
ecosystem is known for its amazing biodiversity, being the between aquaculture operators and the fishing communities.
wintering ground for more than one million migratory birds.
The lake is highly productive, with its rich fishery resources A major step in halting the degradation of the lake eco-
sustaining the economic livelihoods of more than 200,000 system was the establishment of the Chilika Development
fishermen, with a long tradition of this activity. Spatial and Authority (CDA) in 1992. An initial activity was the opening
temporal salinity gradients produced by freshwater inflows of the lake mouth and creation of a channel through the
from its drainage basin and seawater influxes from the barrier beach at Satpara in September 2000, which led to
lake mouth into the lake have made Chilika Lake a unique the ecological regeneration and restoration of the coastal
ecosystem, with its fresh, brackish and marine water zones lake ecosystem. A reduced channel length of 18 km and
supporting a characteristic biodiversity. The ecosystem and the resultant de-siltation ensured an exchange of marine and
its basin resources also are important to the large agrarian brackish waters which also: (i) improved lake water quality;
community around the lake. The ecosystem services (ii) restored micro- and macro-habitats of commercially
provided by the lake are plentiful, including: (i) fisheries; (ii) important species; (iii) enhanced lake fishery resources
vegetation-based resources (a variety of aquatic weeds (including fish, prawns and crabs, whose catch improvement
are traditionally used for manufacturing handicrafts and is attributed largely to auto-recruitment of fish, prawn and
other items for daily use (iii) ecotourism (the lake has rich crab juveniles from the sea through the lake mouth); and (iv)
biodiversity, including Irrawadi dolphins (Orcaella brevirastris) controlled invasive species. Six species of threatened fishes
that have made the lake a major tourist attraction); and (iv) and two species of threatened prawns have also recovered
recreational, socioeconomic and religious values (the local to varying degrees. Seagrass meadows have been
communities have a number of traditions and customs restored, with an accompanying reduction in numbers of
that form the basis of the relationship between the lake invasive species (e.g., the surface area of freshwater weeds
ecosystems and its surrounding communities). increased from 20 km2 in 1972 to 523 km2 in 2000; opening
the lake mouth to the sea resulted in a significant increase
In the recent past, construction of major hydraulic in weed-free lake surface). The restored lake ecosystem
structures upstream has altered the lake’s water flow and has facilitated the return of Irrawady dolphins, resulting in
sedimentation patterns. Further, sediment transport along community-based ecotourism as an alternative income
the shoreline bordering the Indian Ocean has caused the source for unemployed youth in lakeside communities.
mouth of the lake to shift and close, thereby affecting
tidal water flows into and out of the lake, with profound
impacts on its water quality and biodiversity. This loss of
Lessons learned
hydrologic connection between the lake and the ocean (1) An ecosystem approach to managing ecosystems can
has dramatically altered the salinity and hydrodynamics restore the ecological health of an ecosystem.
of the lake, with significant environmental impacts, to the
extent that the lake was placed in the Montreux Record (2) Ecological imbalances can result from both
(threatened list of Ramsar sites) in 1993. The increased anthropogenic (unsustainable agriculture, pollution,
siltation resulting from the lake mouth closure has caused siltation) and natural factors (closure of lagoon mouth
increased turbidity, decreased salinity, encouraged the to sea);
22 WATER SECURITY AND ECOSYSTEM SERVICES
26. Utilizing ecosystem services for agricultural production
may not always be more positive than managing for a
near-natural ecosystem condition that supports not only
agriculture but also tourism and recreational uses.
lake bottom, although dry in summer, remained soft and can generate more income in some situations than
impossible to cultivate efficiently. As a result, the lake started agricultural activities.
to become overgrown with shoreline forest, shrubs, sedge
and reeds. Its water level decreased to 2.5 m below its level (3) Ecosystem interactions must be considered within
before 1802, with the remainder of the lake being a reed a wider, longer-term perspective when undertaking
area with some pools. The bioactivity subsequently became construction work that impacts the water cycle,
imbalanced, being reduced in some areas, and extremely since a sustainable ecology may not be achieved,
increased in other areas, on a seasonal basis resulting in and a second habitat rehabilitation may be needed,
rapid sedimentation of organic material and a continually if a positive ‘impact-chain’ cannot be identified as an
overgrown lake. outcome of such measures.
The first attempts at lake restoration were begun in the
4. Delavan Lake (USA)
1950s, with the first restoration plan initiated in the latter
part of the 1960s. The original restoration plan, approved Source: Rehabilitation of Delevan Lake (Wisconsin,
by the Swedish Parliament in 1977, essentially involved: (i) USA), contributed by Jeffrey Thornton and T.M. Slawski,
destruction of reed root mats; (ii) building of embankments at Southeastern Wisconsin Regional Planning Commission,
the lake outlet, and at certain low-lying points around the lake, Waukesha, Wisconsin USA, and M.E. Eiswerth, University
thereby protecting agricultural land close to the lake; and (iii) of Wisconsin-Whitewater, USA
raising the lake’s mean summer water level by about 1.5 m.
Delavan Lake is situated on Jackson Creek, which drains
The envisaged increase in water level in the 1977 restoration through the town of Delavan, Wisconsin, and ultimately
plan of 1.5 m was achieved in the late-1980s. Construction to the Mississippi River. The Lake has a surface area of
of about 25 km of embankments to prevent flooding of approximately 838.5 ha, a mean and maximum depth of
agricultural land was slightly changed, due partly to the about 6.4 and 17 m, respectively, and a water volume of
costs of their maintenance and potential subsidence about 55.3 million m3. The lake level is augmented by a
problems on soft lake sub-strata. The revisions affected 2.5 m dam constructed at the lake outlet. Development
construction of the southeastern and northern edges of of the lake began in 1875 with the construction of the first
the embankments, resulting in shallow shoreline meadows, permanent residence along the lake’s north shore. Today,
excellent for waterfowl. the lake serves multiple purposes, ranging from providing
a venue for waterfront residential (and limited commercial)
Another positive result was an increased tourism associated development, to providing a popular recreational venue for
with cranes attracted to the wetland area by waste potatoes residents and visitors alike, to being a visual amenity for the
and barley from a distillery. Several tourist amenities have community and its visitors.
been created, and the so-called “Crane Dance” is closely
followed in the news media. Delavan Lake historically has experienced various ecosystem
impairments, including excessive aquatic plant and algal
Lessons learned growths, water quality-related use limitations, and public
concerns over its aesthetic degradation. Concerns have
(1) Utilizing ecosystem services for agricultural production been raised regarding deteriorating water quality conditions,
may not always be more positive than managing for a the need to protect environmentally sensitive areas, and to
near-natural ecosystem condition that supports not only prevent the spread of exotic plant species within its basin.
agriculture but also tourism and recreational uses. To improve the usability of Delavan Lake, and to prevent
future deterioration of its natural assets and recreational
(2) Restoring a lake to a pre-disturbance condition potential, federal, state, and local agencies began a major,
may result in a more favourable biodiversity, which multi-year programme of lake rehabilitation between 1969
24 WATER SECURITY AND ECOSYSTEM SERVICES