Effect of Management on Water Quality and Perception of Ecosystem Services Provided by an Urban Lake

Urban freshwater lakes play an indispensable role in maintaining the urban environment and are suffering great threats of eutrophication. Until now, little has been known about the seasonal bacterial communities of the surface water of adjacent freshwater urban lakes. This study reported the bacterial communities of three adjacent freshwater lakes (i.e., Tangxun Lake, Yezhi Lake and Nan Lake) during the alternation of seasons. Nan Lake had the best water quality among the three lakes as reflected by the bacterial eutrophic index (BEI), bacterial indicator (Luteolibacter) and functional prediction analysis. It was found that Alphaproteobacteria had the lowest abundance in summer and the highest abundance in winter. Bacteroidetes had the lowest abundance in winter, while Planctomycetes had the highest abundance in summer. N/P ratio appeared to have some relationships with eutrophication. Tangxun Lake and Nan Lake with higher average N/P ratios (e.g., N/P = 20) tended to have a higher BEI in summer at a water temperature of 27 °C, while Yezhi Lake with a relatively lower average N/P ratio (e.g., N/P = 14) tended to have a higher BEI in spring and autumn at a water temperature of 9–20 °C. BEI and water temperature were identified as the key parameters in determining the bacterial communities of lake water. Phosphorus seemed to have slightly more impact on the bacterial communities than nitrogen. It is expected that this study will help to gain more knowledge on urban lake eutrophication.

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Comparing Wetland Ecosystems Service Provision under Different Management Approaches: Two Cases Study of Tianfu Wetland and Nansha Wetland in China

Sustainability ◽

10.3390/su13168710 ◽

2021 ◽

Vol 13 (16) ◽

pp. 8710

Author(s):

Yuchao Zhang ◽

Steven Loiselle ◽

Yimo Zhang ◽

Qian Wang ◽

Xia Sun ◽

...

Keyword(s):

Water Quality ◽

Ecosystem Services ◽

Wetland Management ◽

Nutrient Retention ◽

Limited Information ◽

Urban Centers ◽

Wetland Ecosystems ◽

Fundamental Information ◽

Management Approaches ◽

Study Sites

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.

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The Hidden Half: Linking microbial communities to habitat condition and vegetation management in UK blanket bogs

10.5194/egusphere-egu21-11861 ◽

2021 ◽

Author(s):

William Burn ◽

Andreas Heinemeyer ◽

Thorunn Helgason ◽

David Glaves ◽

Michael Morecroft

Keyword(s):

Water Quality ◽

Ecosystem Services ◽

Microbial Communities ◽

Structural Equation ◽

Management Strategies ◽

Vegetation Management ◽

Equation Model ◽

Habitat Condition ◽

Blanket Bog ◽

The Uk

Peatlands are globally valued for the ecosystem services they deliver, including water quality regulation and carbon sequestration. In the UK, blanket bogs are the main peatland habitat and previous work has linked blanket bog management, especially rotational burning of heather vegetation on grousemoors, to impacts on these ecosystem services. However, we still lack a mechanistic, process-level understanding of how peatland management and habitat status is linked to ecosystem service provision, which is mostly driven by soil microbial processes.Here we examine bacterial and fungal communities across a spectrum of &#8220;intact&#8221; to degraded UK blanket bogs and under different vegetation management strategies. Sites included grousemoors under burnt and alternative mown or uncut management along with further locations including 'near intact', degraded and restored sites across a UK climatic gradient ranging from Exmoor (South UK), the Peak District (Mid) to the Flow Country (North). Moreover, an experiment was setup at the University of York with peat mesocosms taken from all sites and management/habitat conditions to allow a comparison between field and controlled conditions and assessing root-mediated processes. Using a structural equation model, we linked grousemoor management to specific fungal/bacterial functional groups, and have started to relate this to changes in water quality provision and carbon cycle aspects. This represents a significant step in the effort to use microbial communities as indicators of peatland habitat condition in UK upland blanket bogs.&#160;&#160;

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Mapping the potential for payments for ecosystem services schemes to improve water quality in agricultural catchments: a multi-criteria approach based on the supply and demand concept

Water Research ◽

10.1016/j.watres.2021.117693 ◽

2021 ◽

pp. 117693

Author(s):

William M Roberts ◽

Laurence B Couldrick ◽

Gareth Williams ◽

Dawn Robins ◽

Dave Cooper

Keyword(s):

Water Quality ◽

Ecosystem Services ◽

Supply And Demand ◽

Payments For Ecosystem Services ◽

Agricultural Catchments ◽

Improve Water Quality

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Spatial model of water quality in Southeast Asian urban lake based on HBI using macrozoobenthos diversity as a proxy

10.1101/2021.02.16.431487 ◽

2021 ◽

Author(s):

Andri Wibowo

Keyword(s):

Water Quality ◽

Model Selection ◽

Water Temperature ◽

Spatial Model ◽

Aquatic Organism ◽

Biotic Index ◽

Urban Lake ◽

Anthropogenic Pressures ◽

Robust Approach ◽

Temperature Variable

AbstractUrban lake is one of ecosystem that has experienced anthropogenic pressures and this can affect its water quality. One of a robust approach to assess the water quality is by using Hilsenhoff Biotic Index (HBI). This tool is quite versatile since it can be applied by using any aquatic organism as proxy including macrozoobenthos. This invertebrate group also has an advantage since it is common and easy to collect. Here this study is first, aiming to provide HBI based water quality spatial model using macrozoobenthos as a proxy applied in urban lake in West Java in Southeast Asia and second to seek the best model that can represent the water quality variables in particular dissolved oxygen (DO), pH, and temperature. Based on the spatial model and HBI, either inlet or outlet parts of the lake, it has better water quality in comparison to central parts. Based on HBI values, water quality in inlet and outlet parts (HBI = 6.7) is categorized as fair and poor (HBI = 6.9) for the central parts of the lake. The increase in HBI and decrease in water quality are positively correlated with the increase in water temperature variable in comparison to water DO and pH variables. Akaike model selection confirms that the macrozoobenthos diversity can be used as a proxy for increase in water temperature (Ψ)HBI (~temp)(AIC = −10.264) followed by combination of water temperature increase and decrease in DO(Ψ)HBI (~temp+DO)(AIC = −9.042398).

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What Price for Ecosystem Services in China?

Advances in Business Strategy and Competitive Advantage - Managerial Strategies and Solutions for Business Success in Asia ◽

10.4018/978-1-5225-1886-0.ch010 ◽

2017 ◽

pp. 176-198

Author(s):

Haixia Zheng ◽

Stale Navrud ◽

Shiran Shen

Keyword(s):

Water Quality ◽

Quality Improvement ◽

Ecosystem Services ◽

Water Resources ◽

River Basin ◽

Contingent Valuation Method ◽

Policy Instrument ◽

Miyun Reservoir ◽

Water Quality Improvement ◽

Value Of Water

Payment for Environmental Services (PES) in the watershed has been widely adopted as an important policy instrument to compensate upstream water users for providing water quality improvement for the whole river basin. In this paper, we use three independent valuation methods to determine the price of ecosystem service (ES), particularly water quality, in Miyun Reservoir, the main surface water source for Beijing. We find that the value of water quality is lowest using opportunity cost of limitation of development rights (OCLDR), highest with contingent valuation method (CVM), and water resources benefits assessment (WRBA) gives an in-between value. OCLDR determines the size of subsidies from those that benefit from water quality improvement from upstream. WRBA is a reference for compensation criteria to the upstream government and farmers when water resources are transferred across jurisdictional boundaries. CVM not only captures the direct value of water quality improvement, but also the indirect value of improvement in other ecosystem services as a result of improvement in water quality. Based on the results, we propose a multi-level ecological compensation system for the Miyun Reservoir river basin. We use OCLDR to determine subsides/ compensation to upstream farmers and other suppliers of the ES; WRBA set the price of water transfer; and CVM to figure out the size of payments for integrated water quality improvement.

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Demand and supply of agricultural ES: towards benefit-based policy

European Review of Agricultural Economics ◽

10.1093/erae/jbz044 ◽

2020 ◽

Vol 47 (3) ◽

pp. 1223-1249 ◽

Cited By ~ 3

Author(s):

Annika Tienhaara ◽

Emmi Haltia ◽

Eija Pouta ◽

Kyösti Arovuori ◽

Ioanna Grammatikopoulou ◽

...

Keyword(s):

Water Quality ◽

Ecosystem Services ◽

Environmental Policy ◽

Willingness To Pay ◽

Discrete Choice ◽

Choice Experiment ◽

Willingness To Accept ◽

Demand And Supply ◽

Experiment Method ◽

Almost All

Abstract In order to integrate ecosystem services (ES) in designing agri-environmental policy, we investigated both the demand for, and supply of, ES from agricultural environments in Finland. Using the discrete choice experiment method, we measured citizens’ willingness to pay (WTP) for four different ES and analysed farmers’ compensation request (willingness to accept [WTA]) for producing these services. Biodiversity and water quality gathered the highest WTA of farmers, but also the highest WTP of citizens. Overall, the average WTA exceeded the WTP for almost all attributes and levels, but 20–27 per cent of farmers were willing to produce the ES with the compensation lower than citizens’ WTP.

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