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This paper aims to examine the planning and policy processes in relation to the pollution in Lake Taupo. This paper describes and explains the manifestation of the tenets of deliberative democracy and the impediments of mobilising the tenets in the planning and policy-making processes.

This interpretive case study makes sense of interview transcripts, minutes of meetings, media reports and public documents and adopts deliberative democratic theory as the theoretical framework for the interpretive analysis.

Some factors fostered and others challenged the mobilization of the tenets of deliberative democracy. Local government processes facilitated the expression of multiple views in relation to the impacts of human activities on the Lake. Confrontations and tensions were inevitable elements of the deliberative processes. Pre-determined outcomes and domination of local authorities, aiming for environmental sustainability of Lake Taupo, posed as challenges to the operation of deliberative democracy. Some stakeholders need to sacrifice more than others, but recognition of pluralism, conflicts and differences is an essential part of deliberative democracy.

There is scarcity of research that empirically examines local government processes in light of deliberative democratic principles. The study also extends environmental and social studies that have explored the arena approach to accountability and decision-making.

Kolleru Lake, a wetland located in India, is one of the largest natural freshwater lakes and is an important sanctuary for indigenous and migratory birds, particularly in winter seasons. The lake is located between latitudes 16°32′ and 16°47′N and longitudes 81°05′ and 81°27′E. The lake is connected to the sea through the Upputeru River, at a distance of 60 km. The lake water is mainly used for drinking water, agriculture, fishing and aquaculture purposes. The lake ecosystem is deteriorating due to the industrial, agricultural and aquacultural activities. High volume sampler was used for the collection of air pollutants, namely suspended particulate matter, nitrogen oxide and sulfur dioxide from the lake at four locations over a period of one year. Water samples were collected from the lake in three seasons in a year over a period of three years and analyzed for water quality parameter, namely total suspended solids, hardness, chloride, sodium, chemical oxygen demand and biochemical oxygen demand. The aim of this study is to create the air and water pollution maps of Kolleru Lake using geographic information systems (GIS) for the better management of Kolleru Lake to control the pollution and also to avoid the risk of air and water pollutants on humans, aquatic organisms, birds and plants.

The purpose of this paper is to communicate and share experiences with stakeholders on how the sustainability threats and challenges associated with managing Lake Kariba and the Kariba Dam wall are being managed by the Zambezi River Authority (ZRA).

The case study area is Lake Kariba and Kariba Dam wall located in the mid‐Zambezi river basin. The data and information for the case study is from ZRAs own records.

The case study concludes that the threats and challenges so far experienced have been mitigated adequately with management programmes and tools having been put in place. However, a lot still needs to be done to improve the socio‐economic living conditions of the displaced Tonga/Korekore people.

Lake Kariba was created in the late 1950s to provide water primarily for hydro‐power production. However, this water resource now serves many users and has its sustainability threats; invasive weeds, water pollution, cyclic drought and flood events, the competing uses and multiple legislative provisions. The Kariba Dam wall, as an engineering structure, has its own sustainability challenges; effects of alkaline aggregate reaction, the spillway plunge pool stability and the general ageing of the dam structure. The Tonga/Korekore people, who were displaced on both banks of the Zambezi River when Kariba Dam was built, still feel short‐changed. Stakeholders will be able to associate and relate to similar threats, challenges and experiences and use the management solutions being applied at Kariba. The opinions and conclusions drawn in this case study are those of the author.

The purpose of this paper is to address the issue of optimal management of ecosystems by developing a dynamic model of strategic behavior by users/communities of an ecosystem such as a lake, which is subject to pollution resulting from the users. More specifically, it builds a model of two ecosystems that are spatially connected.

The paper uses the techniques of optimal control theory and game theory.

The paper uncovers sufficient conditions under which the analysis of the dynamic game can be converted to an optimal problem for a pseudo authority. It is shown that if the discount rate on the future is high enough relative to ecological self‐restoration parameters then multiple stable states appear. In this case, if the pollution level is high enough it is too costly in terms of what must be given up today to restore the damaged system. By using computational methods, the paper evaluates the relative strengths of lack of coordination, strength of ecosystem self‐cleaning forces, size of discount rates, etc.

The methodology as well as findings can help to devise an optimal management strategy over time for ecosystems.

The ESPRIT Project SIMPR developed software to analyse documents and generate indexes for them. Of immediate application as a document indexing and classification system, this also offers a technology for information modelling that has broader implications, supporting many new uses for information management software. The Project was based on the assumption that information can only be managed successfully by computer systems that can view the information contained in a document through the language in which the document is written, and that systems need to be sufficiently flexible to respond to the changing requirements of document use.

Presents a survey of water, water pollution and control in China. Water shortage and water pollution are two of the most important environmental problems and factors affecting the development of industry, agriculture and the economy. China has made great efforts to improve environmental quality and has issued a series of important policies and regulations since the 1970s. Water saving and waste water reuse are the most significant measures implemented for solving the water shortage and controlling water pollution. All these policies and measures are playing an important role in alleviating and controlling the extent of water pollution.

This research aims to model the existing system of destination competitiveness, identifies leverage points and develop revised model to achieve sustainable competitiveness.

System dynamics is used as method of modeling destination competitiveness. Structure of model utilizes 9-factor model as reference. Leverage points are identified using system archetypes. Revised model is built with resource-based view (RBV). Case study was conducted in Samosir, Toba Lake. Data used are secondary data and results of in-depth interviews.

There are 3 sub-systemic characteristics (archetypes) that hinder competitiveness. They are limit to growth quality gap, fix that fails infrastructure and promotion, tragedy of common lake pollution. Destination was unable to meet tourist expectations. Tourists spending decreased, demand size was small. Industries are unable to increase capabilities. Professionals, entrepreneurs, local workers, supporting industries are less interested in entering industry. Government policies do not match with destination's needs. Lake as main attraction is getting polluted. To achieve sustainable competitiveness, destination must utilize their valuable, rare and inimitable (VRI) resources and capabilities to design unique experiences for tourists, hence sustainable.

Government policy should be shifted to prioritizing development of valuable, rare, inimitable and well-organized resources and capabilities of destination, to produce unique tourist experience and achieve sustainable competitiveness.

Methods and findings, combining system dynamics, system archetype, 9-factor model and RBV to achieve sustainable competitiveness is novel and can enrich tourism sustainable competitiveness theory/concept.

The problems of water supply of China in 2000 are revealed by statistical data. It is shown that 450 cities will be short of fresh water; a great quantity is utilised in agriculture much of which can be saved; groundwater is over‐extracted; the level of water is falling by an average of 1‐2mu each year which has caused the subsiding of regional earth; the quality of drinking water and of water utilised in industry becomes poorer; water resources are polluted because of the increase in organic pollutants, the number and size of cities, the pollution of nutrient and colon bacillus, the decrease in the area of lakes, the shortage of money for administration, the amount of polluted water drained without efficient treatment, the low re‐utilisation ratio of water, and the low rate of sewerage system development.

Deepor Beel is one of the Ramsar Site and a wetland of great biodiversity, situated in the south-western part of Guwahati, Assam. With urban development at its forefront city of Guwahati, Deepor Beel is under constant threat. The study aims to calculate the lake water volume from the water surface area and the underwater terrain data using a triangulated irregular network (TIN) volume model.

The lake water surface boundaries for each year were combined with field-observed water level data to generate a description of the underwater terrain. Time series LANDSAT images of 2001, 2011 and 2019 were used to extract the modified normalized difference water index (MNDWI) in GIS domain.

The MNDWI was 0.462 in 2001 which reduced to 0.240 in 2019. This shows that the lake water storage capacity shrank in the last 2 decades. This leads to a major problem, i.e. the storage capacity of the lake has been declining gradually from 20.95 million m³ in 2001 to 16.73 million m³ in 2011 and further declined to 15.35 million m³ in 2019. The fast decline in lake water volume is a serious concern in the age of rapid urbanization of big cities like Guwahati.

None of the studies have been done previously to analyze the decline in the volume of Deepor Beel lake. Therefore, this study will provide useful insights in the water resource management and the conservation of Deepor Beel lake.

The paper aims to draw on recommendations of Agenda 21 and communitarian theory to examine collaboration between local district community and local authorities to formulate strategies for the sustainable development of the Taupo district.

The paper adopts an interpretative methodology based on philosophical hermeneutic to understand collaboration between local community and local authorities in the Taupo district. Empirical data for this interpretive study comprise public documents, interview transcripts and minutes of meetings attended by the researchers. The paper begins interpretation of empirical data with pre‐understanding of communitarian theory and Agenda 21.

The findings indicate that historical and political factors and diversity of interests in the community affect processes and outcomes of collaboration. Local authorities play a crucial role in bringing together various groups in the Taupo community which are segregated by diversity of interests, especially between Maori and non‐Maori community groups. Without local authority facilitation, the Taupo community may remain segregated; inhibited by lack of information; and not having the opportunity to participate in sustainable development. Community participation in the Taupo district is at an infancy stage and collaboration intended to empower communities may result in local authorities recentralising their positions.

The paper integrates theory and practice and provides valuable insights for statutory agencies seeking to implement the recommendations of Agenda 21 regarding community participation in sustainable development.