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Water
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Integrated Ecohydrological Models and Aquatic Ecosystem Management
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Integrated Ecohydrological Models and Aquatic Ecosystem Management

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Biodiversity and Functionality of Aquatic Ecosystems".

Deadline for manuscript submissions: closed (30 June 2021) | Viewed by 14977

Special Issue Editors

Prof. Dr. Naicheng Wu

E-Mail Website
Guest Editor
Department of Hydrology and Water Resources Management, Christian-Albrechts-Universität zu Kiel, Kiel, Schleswig-Holstein, Germany
Interests: hydroecology; river basin management; aquatic ecosystem; bioassessment; global change; anthropogenic impacts
Prof. Dr. Qinghua Cai

E-Mail Website
Guest Editor
Institute of Hydrobiology, Chinese Academy of Sciences (CAS), Wuhan, Hubei, China
Interests: aquatic ecology; aquatic organisms; watershed ecology; dam construction; hydrobiology; bioassessment; biodiversity
Prof. Dr. Wei Ouyang

E-Mail Website
Guest Editor
School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing, China
Interests: watershed water environmental process; watershed modeling

Special Issue Information

Dear Colleagues,

As a critical component of the global environment, aquatic ecosystems support a wide range of organisms, including bacteria, fungia, algae, invertebrates, plants, and fish. With the rapid economic development and population increase, aquatic ecosystems have been increasingly affected by human induced stressors, such as nutrient enrichment, organic and inorganic pollution, land use change, geomorphological alteration, water abstraction, invasive species, and climate change. These stressors interact and can result in complex effects on organisms, and ultimately on ecosystem functions and services that are vital for human wellbeing. Restoration and sustainable management of aquatic ecosystems affected by multiple stressors is thus a key contemporary challenge for environmental scientists and policy makers. Integrated ecohydrological models enable us to run “virtual experiments” and are mandatory to disentangle the complex interaction of stressors on aquatic ecosystems. Thus far, investigation of integrated models is still missing, although there are a few successful implementations.   

This Special Issue welcomes articles dedicated to all aspects of integrated ecohydrological models as well as aquatic ecosystem management. Papers may include but not be limited to 1) impacts of multiples stressors on aquatic organisms and biodiversity, ecosystem functions, and services, 2) developing new integrated ecohydrological models, 3) applying models to evaluate different future scenarios on aquatic ecosystems, and 4) generating mitigation strategies and best management practices for aquatic ecosystems.

Prof. Dr. Naicheng Wu
Prof. Dr. Qinghua Cai
Prof. Dr. Wei Ouyang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • aquatic biodiversity
  • ecosystem functions and services
  • ecohydrology
  • global change
  • mitigation strategy
  • multiple stressors
  • sustainable river basin management

Published Papers (6 papers)

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Editorial

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4 pages, 197 KiB  
Editorial
Integrated Ecohydrological Models in Aquatic Ecosystems
by Naicheng Wu, Yixia Wang, Yaochun Wang, Qinghua Cai and Wei Ouyang
Water 2022, 14(2), 204; https://doi.org/10.3390/w14020204 - 11 Jan 2022
Viewed by 1308
Abstract
As a critical component of the global environment, aquatic ecosystems support a wide range of organisms, including bacteria, fungi, algae, invertebrates, plants, and fish [...] Full article
(This article belongs to the Special Issue Integrated Ecohydrological Models and Aquatic Ecosystem Management)

Research

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18 pages, 3231 KiB  
Article
Water Temperature Simulation in a Tropical Lake in South China
by Hongbin Gu, Baohong Lu, Changjun Qi, Si Xiong, Wenlong Shen and Lejun Ma
Water 2021, 13(7), 913; https://doi.org/10.3390/w13070913 - 27 Mar 2021
Cited by 5 | Viewed by 2286
Abstract
To study the vertical water temperature structure and thermodynamic characteristics of tropical lake-like reservoirs, a water temperature model was developed by a vertical one-dimensional numerical model for Songtao Reservoir in Hainan Province, China. The model was verified by the measured water temperature data, [...] Read more.
To study the vertical water temperature structure and thermodynamic characteristics of tropical lake-like reservoirs, a water temperature model was developed by a vertical one-dimensional numerical model for Songtao Reservoir in Hainan Province, China. The model was verified by the measured water temperature data, and sensitivity analysis of key model parameters was carried out. The results show that water temperature simulated by the model in Songtao Reservoir agreed with the observations quite well, and the model is feasible for water temperature simulations in large reservoirs in tropical zones. The sensitivity of vertical water temperature structure to different model parameters varied. For example, the extinction coefficient greatly affected surface water temperature, which is important for the formation and development of the surface water temperature hybrid layer. The vertical mixing coefficient significantly influenced the inflection point position and thickness of the thermocline. The vertical water temperature structure in Songtao Reservoir was stratified. Reservoir surface water temperature varied from 19.4 °C to 33.8 °C throughout a year. The hypolimnion mainly appeared in elevation below 150 m, where the water temperature is basically maintained at 19 °C throughout the year. This study also found that the surface water temperature of Songtao Reservoir in the tropical zone was higher than the air temperature throughout a year, with an annual average of 3.5 °C higher than that of air temperature. The preliminary analysis found out that the higher surface water temperature may be caused by the strong air temperature and solar radiation in tropical zones, in addition to the enhanced capacity of heat absorption and heat storage due to the slow water flow in the reservoir. Full article
(This article belongs to the Special Issue Integrated Ecohydrological Models and Aquatic Ecosystem Management)
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11 pages, 3471 KiB  
Article
Population Characteristics of Brachionus calyciflorus and Their Potential Application for Evaluating River Health in the Pearl River Delta, China
by Yuan Gao, Zini Lai, Chao Wang, Haiyan Li and Yongzhan Mai
Water 2021, 13(6), 749; https://doi.org/10.3390/w13060749 - 10 Mar 2021
Cited by 3 | Viewed by 2388
Abstract
Water pollution can be monitored through the use of indicator species, including Brachionus calyciflorus. To do this, it is necessary to understand the species’ population ecology. Four surveys of zooplankton were conducted in May, August, and December 2018 and February 2019 in [...] Read more.
Water pollution can be monitored through the use of indicator species, including Brachionus calyciflorus. To do this, it is necessary to understand the species’ population ecology. Four surveys of zooplankton were conducted in May, August, and December 2018 and February 2019 in the Pearl River Delta, China, to examine the population characteristics of B. calyciflorus. The temporal and spatial distribution of abundance, biomass, dominance, and occurrence frequency were compared with those from 2012 to investigate the relationship between changes in the population of B. calyciflorus and environmental factors. The average abundance, dominance, and occurrence of B. calyciflorus in this survey were significantly higher than those of 2012 in all seasons. Principal component analysis showed that environmental factors such as the temperature, transparency, total nitrogen, and total phosphorus of water had a major impact on the abundance of B. calyciflorus. There was a significant positive correlation with transparency, total nitrogen, and total phosphorus of water, and a very significant positive correlation with water temperature. Overall, these results demonstrated that the distribution characteristics of B. calyciflorus can reflect pollution in water bodies and can be used to evaluate water quality. These research results provide a reference for evaluating China’s river health and can help to manage water quality in the Pearl River Delta. Full article
(This article belongs to the Special Issue Integrated Ecohydrological Models and Aquatic Ecosystem Management)
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17 pages, 33536 KiB  
Article
Using Integrated Hydrological Models to Assess the Impacts of Climate Change on Discharges and Extreme Flood Events in the Upper Yangtze River Basin
by Yanjuan Wu, Gang Luo, Cai Chen, Zheng Duan and Chao Gao
Water 2021, 13(3), 299; https://doi.org/10.3390/w13030299 - 26 Jan 2021
Cited by 6 | Viewed by 2144
Abstract
Amongst the impacts of climate change, those arising from extreme hydrological events are expected to cause the greatest impacts. To assess the changes in temperature and precipitation and their impacts on the discharge in the upper Yangtze Basin from pre-industrial to the end [...] Read more.
Amongst the impacts of climate change, those arising from extreme hydrological events are expected to cause the greatest impacts. To assess the changes in temperature and precipitation and their impacts on the discharge in the upper Yangtze Basin from pre-industrial to the end of 21st century, four hydrological models were integrated with four global climate models. Results indicated that mean discharge was simulated to increase slightly for all hydrological models forced by all global climate models during 1771–1800 and 1871–1900 relative to the 1971–2000 reference period, whereas the change directions in mean discharge were not consistent among the four global climate models during 2070–2099, with increases from HadGEM2-ES and MIROC5, and decreases from GFDL-ESM2M and IPSL-CM5A-LR. Additionally, our results indicated that decreases in precipitation may always result in the decrease in mean discharge, but increases in precipitation did not always lead to increases in discharge due to high temperature rise. The changes in extreme flood events with different return intervals were also explored. These extreme events were projected to become more intense and frequent in the future, which could have potential devastating impacts on the society and ecosystem in this region. Full article
(This article belongs to the Special Issue Integrated Ecohydrological Models and Aquatic Ecosystem Management)
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22 pages, 2201 KiB  
Article
Macroinvertebrate Communities in a Lake of an Inter-Basin Water Transfer Project and Its Implications for Sustainable Management
by Wanxiang Jiang, Baozhu Pan, Jing Chen, Xiaoming Jiang, Henglun Shen and Tianshun Zhu
Water 2020, 12(7), 1900; https://doi.org/10.3390/w12071900 - 3 Jul 2020
Cited by 3 | Viewed by 2392
Abstract
In the present study, we choose the Weishan Lake, one of important water transfer and storage lakes on the eastern route of the South-to-North Water Diversion Project (SNWD) in China, to clarify how the community structure and assemblage-environment relationships of macroinvertebrates varied across [...] Read more.
In the present study, we choose the Weishan Lake, one of important water transfer and storage lakes on the eastern route of the South-to-North Water Diversion Project (SNWD) in China, to clarify how the community structure and assemblage-environment relationships of macroinvertebrates varied across three typical habitats (the River Mouth, Canal and Lake regions) over the four seasons in 2012. A total of 72 taxa belonging to 3 phyla, 9 classes and 24 families were recorded, with tolerant oligochaetes and chironomids as the dominant taxa. The environmental conditions and macroinvertebrate assemblages were clearly separated at spatial and temporal scales. Assemblage structure showed both significant but larger spatial than seasonal variations, with a clear separation of sites from three regions in an ordination plot. Compared to the temporal scale, more indicator species were retained to be responsible for the regional differences according to the two-way cluster analysis. Different environmental variables were significant for distinguishing macroinvertebrate assemblages among four seasons, and among them, pH was the only variable which was retained in all models. Our study provided useful background information of environmental characteristics and macroinvertebrate communities in a typical water transfer and storage lake before the water transfer of the SNWD. After the operation of SNWD, we envisage inter-basin water transfer (IBWT), which is usually accompanied by water level rise, nutrient pattern change and biota succession, will seriously affect recipient basins. Therefore, we propose several management strategies for SNWD: (1) target and detailed data should be collected on a timely basis; (2) government should prevent water pollution and adopt effective measures to protect the water environment; (3) the environmental assessments and other aspects of IBWT planning should be coordinated; (4) an overall consideration of different basins should be given to achieve a greater range of water resources planning, scheduling, and allocation; and (5) the migration and invasion of species should be of concern during the operation of the project. Full article
(This article belongs to the Special Issue Integrated Ecohydrological Models and Aquatic Ecosystem Management)
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Review

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22 pages, 3903 KiB  
Review
The Regional Hydro-Ecological Simulation System for 30 Years: A Systematic Review
by Benxin Chen, Zhifeng Liu, Chunyang He, Hui Peng, Pei Xia and Yu Nie
Water 2020, 12(10), 2878; https://doi.org/10.3390/w12102878 - 16 Oct 2020
Cited by 9 | Viewed by 3678
Abstract
As the Regional Hydro-Ecological Simulation System (RHESSys) is a tool to simulate the interactions between ecological and hydrological processes, many RHESSys-based studies have been implemented for sustainable watershed management. However, it is crucial to review a RHESSys updating history, pros, and cons for [...] Read more.
As the Regional Hydro-Ecological Simulation System (RHESSys) is a tool to simulate the interactions between ecological and hydrological processes, many RHESSys-based studies have been implemented for sustainable watershed management. However, it is crucial to review a RHESSys updating history, pros, and cons for further improving the RHESSys and promoting ecohydrological studies. This paper reviewed the progress of ecohydrological studies employing RHESSys by a bibliometric analysis that quantitatively analyzed the characteristics of relevant studies. In addition, we addressed the main application progress, parameter calibration and validation methods, and uncertainty analysis. We found that since its release in 1993, RHESSys has been widely applied for basins (<100 km2) within mainly seven biomes. The RHESSys model has been applied for evaluating the ecohydrological responses to climate change, land management, urbanization, and disturbances, as well as water quality and biogeochemical cycle. While most studies have paid their attention on climate change, the focus has shifted to the application for land management in recent years. This study also identified many challenges in RHESSys such as the inaccessible data and parameters, oversimplified calibration approach, few applications for large-scale watersheds, and limited application fields. Therefore, this study proposed a set of suggestions to overcome the limitations and challenges: (1) Developing a new approach for parameter acquisition and calibration from multi-source data, (2) improving the applicability for a large-scale basin, and (3) extending the scope of application fields. We believe RHESSys can improve the understandings of human–environment relationships and the promotion of sustainable watersheds development. Full article
(This article belongs to the Special Issue Integrated Ecohydrological Models and Aquatic Ecosystem Management)
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