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Aquaculture Productivity and Environmental Sustainability, 2nd Edition

A Special Issue of Water (ISSN 2073-4441) belonging to the section "Water, Agriculture and Aquaculture".

Deadline for manuscript submissions: 31 January 2027 | Viewed by 812

Editors


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Guest Editor
Agricultural Engineering Institute, Jiangsu University, Zhenjiang, China
Interests: recirculating aquaculture system; aquaculture wastewater treatment; moving bed biofilm reactor; biofloc; emerging pollutants
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
School of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China
Interests: environmental engineering; aquaculture; wastewater treatment; resource recycling; sustainable aquaculture
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Ocean Academy, Zhejiang University, Zhoushan, 866 Yuhangtang Road, Hangzhou 310058, China
Interests: aquatic biological environmental engineering; sustainable aquaculture technolo-gies; high-throughput data processing and bioinformatics analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The demand for high-quality protein from the world's growing population is setting higher standards for aquaculture. However, rapid increases in aquaculture production have generated a wide range of severe environmental issues, most notably water pollution and land resource grabbing. Moreover, climate change, such as droughts, floods, global warming, and ocean acidification, will pose a further threat to global aquaculture production. For aquaculture growth to be sustainable, its environmental impact must be significantly reduced. To date, a number of adaptation strategies have been proven to improve aquaculture productivity and environmental sustainability.

This Special Issue welcomes both original research and reviews. Topics of interest include, but are not limited to, the following:

  • Integrated aquaculture;
  • Optimized aquacultural engineering;
  • Advances in aquaculture wastewater treatment;
  • Precise farming management;
  • Smart aquaculture.

Dr. Changwei Li
Dr. Wenchang Liu
Dr. Gang Liu
Guest Editors

Manuscript Submission Information

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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-anonymized 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

  • recirculating aquaculture systems
  • aquaculture engineering
  • wastewater treatment
  • environmental sustainability
  • precise farming management
  • smart aquaculture

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Published Papers (1 paper)

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Research

23 pages, 6437 KB  
Article
Integrating Hydrochemistry and Explainable Machine Learning for Groundwater Quality Assessment in the Bismil Plain, Türkiye
by Sevgi Özgür Geter, Süreyya Betül Rufaioğlu, Ali Volkan Bilgili and Güzel Yılmaz
Water 2026, 18(15), 1902; https://doi.org/10.3390/w18151902 - 4 Aug 2026
Viewed by 618
Abstract
This study evaluates groundwater quality in the Bismil Plain (Diyarbakır, Southeast Türkiye) using a total of 208 samples collected from 26 wells during eight seasonal sampling periods conducted between 2022 and 2024. In each sample, pH, electrical conductivity (EC), and the major ions [...] Read more.
This study evaluates groundwater quality in the Bismil Plain (Diyarbakır, Southeast Türkiye) using a total of 208 samples collected from 26 wells during eight seasonal sampling periods conducted between 2022 and 2024. In each sample, pH, electrical conductivity (EC), and the major ions Ca2+, Mg2+, Na+, K+, Cl, SO42−, HCO3 and NO3 were analyzed, and a WHO-based Water Quality Index (WQI) was calculated for every observation. The study combines classical hydrochemical interpretation methods, including descriptive statistics, hierarchical correlation analysis, variance inflation factor, and Piper and Gibbs diagrams, with an explainable machine learning framework integrating SHAP-based feature selection into Random Forest, XGBoost, support vector regression, and stacking ensemble models. In addition, spatial residuals were evaluated using Moran’s I and ordinary kriging, anomalies were identified using Isolation Forest and Local Outlier Factor algorithms, and predictive uncertainty was quantified through bootstrap resampling. WQI values ranged from 79.37 to 125.48 (mean: 99.67), with all samples classified only within the “Good” (49.5%) and “Poor” (50.5%) quality categories, indicating that the aquifer is close to a critical water-quality threshold. Spatially, the highest (poorest-quality) WQI values form a coherent zone in the south-western and central parts of the plain, whereas the central-eastern wells return the lowest values; the same pattern is reproduced by all four models. XGBoost and the stacking ensemble models showed comparable predictive performance (R2 = 0.911 and 0.910; RMSE = 3.29 and 3.27, respectively), while SHAP analysis identified EC as the dominant controlling factor, followed by NO3, SO42−, Ca2+, Mg2+ and Cl (mean |SHAP| = 6.86, 1.57, 1.10, 1.09, 0.85 and 0.72 WQI units, respectively). Moran’s I computed on the residual fields was −0.067 (p = 0.275) for XGBoost and −0.068 (p = 0.273) for the stacking ensemble, so ordinary kriging of these residuals produced an essentially null correction, whereas the SVR residuals remained spatially autocorrelated (I = 0.242; p = 0.001) and were meaningfully corrected by the geostatistical step. The originality of the study lies in integrating explainable machine learning, geostatistical residual analysis, anomaly detection, and bootstrap-based uncertainty assessment within a unified framework for a multi-season groundwater dataset, while also evaluating the effectiveness of spatial correction using a Moran’s I-based approach. Full article
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