scholarly journals Modelling the Impacts of Aquaculture in Wetland Ecosystems for Sustainable Aquaculture Management: An Integrated Ecosystem Approach

2018 ◽  
Vol 7 (4.34) ◽  
pp. 197
Author(s):  
Roseliza Mat Alipiah ◽  
Fathilah Ismail ◽  
Siti Aisyah Saat ◽  
Ahmad Puad Mat Som

This research integrates information from both environmental and social sciences to inform effective management of the wetlands. A three-stage research framework was developed for modelling the drivers and pressures imposed on the wetlands and their impacts to the ecosystem and the local communities. Firstly, a Bayesian Belief Network (BBN) was used to predict the probability of anthropogenic activities affecting the delivery of different key wetland ecosystem services under different management scenarios. Secondly, Choice Experiment (CE) was used to quantify the relative preferences which key wetland stakeholder group (aquaculturists) held for delivery of different levels of these key ecosystem services. Thirdly, a Multi-Criteria Decision Analysis (MCDA) was applied to produce an ordinal ranking of the alternative management scenarios accounting for their impacts upon ecosystem service delivery as perceived through the preferences of the aquaculturists. This integrated ecosystem management approach was applied to a wetland ecosystem in Setiu, Terengganu, Malaysia which currently supports a significant level of aquaculture activities. This research has produced clear guidelines to inform policy makers considering alternative wetland management scenarios: Intensive Aquaculture, Conservation or Ecotourism, in addition to the Status Quo. The findings of this research are as follows. The BBN revealed that current aquaculture activity is likely to have significant impacts on water column nutrient enrichment, but trivial impacts on caged fish biomass, especially under the Intensive Aquaculture scenario. Secondly, the best fitting CE models identified several stakeholder sub-groups for aquaculturists, each with distinct sets of preferences for the delivery of key ecosystem services. Thirdly the MCDA identified Conservation as the most desirable scenario overall based on ordinal ranking in the eyes of most of the stakeholder sub-groups. Ecotourism and Status Quo scenarios were the next most preferred and Intensive Aquaculture was the least desirable scenario. The methodologies developed through this research provide an opportunity for improving planning and decision making processes that aim to deliver sustainable management of wetland ecosystems in Malaysia.  

2021 ◽  
Vol 13 (16) ◽  
pp. 8710
Author(s):  
Yuchao Zhang ◽  
Steven Loiselle ◽  
Yimo Zhang ◽  
Qian Wang ◽  
Xia Sun ◽  
...  

The largest blue-green infrastructures in industrialized, urbanized and developed regions in China are often multiuse wetlands, located just outside growing urban centers. These areas have multiple development pressures while providing environmental, economic, and social benefits to the local and regional populations. Given the limited information available about the tradeoffs in ecosystem services with respect to competing wetland uses, wetland managers and provincial decision makers face challenges in regulating the use of these important landscapes. In the present study, measurements made by citizen scientists were used to support a comparative study of water quality and wetland functions in two large multiuse wetlands, comparing areas of natural wetland vegetation, tourism-based wetland management and wetland agriculture. The study sites, the Nansha and Tianfu wetlands, are located in two of the most urbanized areas of China: the lower Yangtze River and Pearl River catchments, respectively. Our results indicated that the capacity of wetlands to mitigate water quality is closely related to the quality of the surrounding waters and hydrological conditions. Agricultural areas in both wetlands provided the lowest sediment and nutrient retention. The results show that the delivery of supporting ecosystem services is strongly influenced by the location and use of the wetland. Furthermore, we show that citizen scientist-acquired data can provide fundamental information on quantifying these ecosystem services, providing needed information to wetland park managers and provincial wetland administrators.


2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Mohammad Zahangeer Alam

Species in wetlands provide ecosystem services, and protect the sustainable environment for human beings. The wetland biodiversity has been impacted at Mohangonj in Bangladesh due to the development of major environmental threats. The present research is undertaken to report the species status, wetland properties, and major environmental pressures in each wetland ecosystem. Among the recorded species, the total percentage of visible, threatened, endangered, and extinct species was 69.23, 18.62, 10, and 1.92% in these wetland ecosystems, respectively. The highest number of threatened species was found in the wetland of Aizda (29%); the lowest was in Khalaura (8%). The maximum number of endangered species was noted in the wetland of Sonarthal (16%), and the minimum was in Chadra (4%) wetland. Four percent species were in the extinct category at some of the wetland ecosystems. Wetland biodiversity protects wetland ecosystem services and the sustainable environment for species conservation. Continuous monitoring of wetland biodiversity might be helpful for the conservation of species in the wetland ecosystem.


2017 ◽  
Vol 7 (1) ◽  
pp. 21 ◽  
Author(s):  
Sunday Shende Kometa ◽  
Jude Ndzifon Kimengsi ◽  
Dereck M. Petiangma

Wetlands provide a diversity of ecosystem services (provisioning, regulatory, supporting and cultural services) which are essential for the human society. This is particularly necessary in cases where large urban agglomerations exist. These services are increasingly coming under pressure as a result of rapid and uncontrolled urban development which remains phenomenal in the developing world. Cameroon can boast of a number of wetland environments particularly, the Waza Logone flood plain, the wetlands of the Bakassi Peninsula, Lake Barombi Mbo and the Ndop Plains. The wetland ecosystems of the Ndop Plains have increasingly come under pressure as a result of urban development which is mirrored in population growth, housing and other infrastructural developments. While significant research works have been undertaken on aspects related to wetlands, agriculture and climate variability in the Ndop plains, there is insufficiency scientific information on the implications of urban development on wetland ecosystem services. Using questionnaire (where we systematically sample 140 households) and Landsat images which were complemented by field observations, relevant data were generated. With the aid of SPSS (version 21), the correlation between wetland ecosystem services and urban development at 0.05 level of significance was analysed. Our results reveal a significant negative relationship (r = -0.551 and -0.682) between urban development and the state of wetlands and their ecosystem services. This was further buttressed by geospatial data which revealed that the Ndop urban space increased from 3.7km2 in 1999 to 11.7km2 in 2017. In this regard, we suggest that the coordination of the urban development process through land use planning and zoning is imperative in the face of unabated urban development. We equally suggest the need to implement wetland management policies in line with the Ramsar convention’s paradigm on the “wise use” of wetlands.


2020 ◽  
Vol 39 (3) ◽  
pp. 417-447
Author(s):  
Phillipa C McCormack

Australia’s 2019–20 fire season has been described as the ‘Black Summer’. Vast swathes of the continent burned, including areas that have not been fire-prone in the past, such as wet rainforest and alpine wetlands. This article considers the implications of more frequent and intense wildfires for wetland ecosystems and the extremely valuable ecosystem services that they provide. The article investigates what Australia’s laws have to say about restoring ecosystem services after extreme events such as fire. In particular, the article considers the extent to which existing laws anticipate the possibility of ecosystem transformation, asking: what do our laws require if restoration is not possible?


2019 ◽  
Vol 12 (1) ◽  
pp. 295 ◽  
Author(s):  
Bin Fu ◽  
Pei Xu ◽  
Yukuan Wang ◽  
Yingman Guo

Ecological management based on the ecosystem approach promotes ecological protection and the sustainable use of natural resources. We developed a quantitative approach to identify the ecological function zones at the country-scale, through integrating supply and demand of ecosystem services. We selected the biologically diverse hotspot of Baoxing County, which forms a part of the Sichuan Giant Panda World Heritage Site, to explore the integration of ecosystem services supply and demand for ecosystem management. Specifically, we assessed the various support, provision, regulating, and cultural services as classified by the Millennium Ecosystem Assessment. We applied the InVEST (Integrated Valuation of Ecosystem Services and Trade-offs) model to spatially map habitat quality, water retention, and carbon sinks, and used statistical data to evaluate food products, animal husbandry, and product supply services. We then quantified the demands for these services in terms of population, protected species, hydropower, water, and land use. The relationship between areas of supply and areas of demand was discussed for each township, and the spatial variability in the supply–demand relationship was also considered. As a result, we spatially divided the county into six ecological functional areas, and the linkages between each region were comprehensively discussed. This study thus provides a detailed methodology for the successful implementation of an ecosystem management framework on a county-scale based on the spatial partitioning of supply and demand.


2021 ◽  
Vol 13 (1) ◽  
pp. 425
Author(s):  
Katarina Polajnar Horvat ◽  
Ales Smrekar

Our research focuses on implementing multilevel governance of wetlands to achieve an effective participatory process and its overall positive effects on wetland ecosystems and their protection as well as on local sustainable development. The aim of the research is to develop a methodology for establishing the Wetland Contract, a voluntary agreement to foster sustainable management and development of wetlands, to ensure greater coordination and consensus building between various stakeholders involved in management and to limit conflicts between preservation issues and economic activities in wetlands. The Wetland Contract and the integration process for establishing it in Ljubljansko barje Nature Park proved itself able to overcome conflicts between institutional and legal jurisdiction and is showing itself to be a dynamic path capable of activating a desirable relationship between various interests and supporting new forms of multi-sectoral stakeholder participation in wetland management. It has also contributed to a dialogue and shared responsibility among stakeholders.


2017 ◽  
Vol 53 (4) ◽  
pp. 3197-3223 ◽  
Author(s):  
Christina P. Wong ◽  
Bo Jiang ◽  
Theodore J. Bohn ◽  
Kai N. Lee ◽  
Dennis P. Lettenmaier ◽  
...  

Author(s):  
Adriano CIANI ◽  
Asta RAUPELIENE ◽  
Vilma TAMULIENE

In the world, the question of the good practice to manage of territory is a pillar of the implementations of Sustainable Development Goals 2015-2030. The authors are working in collaboration with a holistic approach at the topic. In this way, the Smart Communities and Smart Territories are the new paradigms in 21th Century to solve the question of the adaptation at the Climate Change and to guarantee, for the future generation, the conservation and promotion of all potentialities of each territory and identity of areas. Until now, they have use a deductive method to analyse and show, in the framework of the Sustainable Development, the Community Led Local Development (EU Programme for CLLD) and Ecosystem Services, the need to move from an emergency management approach to pre-emptive territory management. The results of this research have produced the original and autonomous configuration of a new and innovative strategy and governance based on a model that puts in synergy the three aspects of the framework that has been given the name of Territorial Management Contracts (TMC). The TMC, appear a possible shared and democratic model that could to combine the territory risk management with solutions of development driving and sharing by the local populations. This innovative approach is strictly linked with the targets of the Sustainable Development Goals 2015-2030 and the Europe 2020 (smart, sustainable and inclusive). The authors argue that the TMC model is now sufficiently mature to pass from the processing phase to that of the implementation that in the Payment of the Ecosystem Services (PES) finds a concrete reinforcement of the scientific analysis carried out.


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