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Buta B, Wiatkowski M, Gruss Ł, Tomczyk P, Kasperek R. Spatio-temporal evolution of eutrophication and water quality in the Turawa dam reservoir, Poland. Sci Rep 2023; 13:9880. [PMID: 37336929 DOI: 10.1038/s41598-023-36936-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 06/13/2023] [Indexed: 06/21/2023] Open
Abstract
The objectives of the article are: to assess spatio-temporal evolution of eutrophication and water quality of the Turawa dam reservoir, located in south-western Poland on the Mała Panew River; to identify location and relationship between potential sources of physicochemical pollution related to the progressing process of eutrophication; and to determine trophic status and water quality indices of the selected research object. The analysis (Mann-Whitney U test, PCA, HCA, Spearman correlation matrix) showed a high susceptibility of the reservoir to eutrophication processes, especially due to the influence of dangerous loads of compounds emerging from areas with high tourist intensity and pollutants flowing from the Mała Panew River. The parameters deteriorating the ecological status were TP, DO, BOD5, and COD. Considering the cumulative results of water quality indices for the period 1998-2020, the average water quality was in classes II or III. A noticeable deterioration appeared in water quality for the years 2016-2020, which proves the progressing eutrophication in the Turawa reservoir. In 1998-2020, the reservoir was classified as eutrophic or mesoeutrophic based on the calculated three trophic status indices. This article would help in developing a strategy for dealing with water blooms, a reliable system for monitoring pressures causing eutrophication, and optimal technologies for the reconstruction of multifunctional reservoirs.
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Affiliation(s)
- Bogna Buta
- Institute of Environmental Engineering, Wrocław University of Environmental and Life Sciences, 50-363, Wrocław, Poland
| | - Mirosław Wiatkowski
- Institute of Environmental Engineering, Wrocław University of Environmental and Life Sciences, 50-363, Wrocław, Poland
| | - Łukasz Gruss
- Institute of Environmental Engineering, Wrocław University of Environmental and Life Sciences, 50-363, Wrocław, Poland
| | - Paweł Tomczyk
- Institute of Environmental Engineering, Wrocław University of Environmental and Life Sciences, 50-363, Wrocław, Poland.
| | - Robert Kasperek
- Institute of Environmental Engineering, Wrocław University of Environmental and Life Sciences, 50-363, Wrocław, Poland
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Aguilera A, Almanza V, Haakonsson S, Palacio H, Benitez Rodas GA, Barros MUG, Capelo-Neto J, Urrutia R, Aubriot L, Bonilla S. Cyanobacterial bloom monitoring and assessment in Latin America. HARMFUL ALGAE 2023; 125:102429. [PMID: 37220982 DOI: 10.1016/j.hal.2023.102429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 02/26/2023] [Accepted: 03/20/2023] [Indexed: 05/25/2023]
Abstract
Cyanobacterial blooms have serious adverse effects on human and environmental health. In Latin America, one of the main world's freshwater reserves, information on this phenomenon remains sparse. To assess the current situation, we gathered reports of cyanobacterial blooms and associated cyanotoxins in freshwater bodies from South America and the Caribbean (Latitude 22° N to 45° S) and compiled the regulation and monitoring procedures implemented in each country. As the operational definition of what is a cyanobacterial bloom remains controversial, we also analyzed the criteria used to determine the phenomena in the region. From 2000 to 2019, blooms were reported in 295 water bodies distributed in 14 countries, including shallow and deep lakes, reservoirs, and rivers. Cyanotoxins were found in nine countries and high concentrations of microcystins were reported in all types of water bodies. Blooms were defined according to different, and sometimes arbitrary criteria including qualitative (changes in water color, scum presence), quantitative (abundance), or both. We found 13 different cell abundance thresholds defining bloom events, from 2 × 103 to 1 × 107 cells mL-1. The use of different criteria hampers the estimation of bloom occurrence, and consequently the associated risks and economic impacts. The large differences between countries in terms of number of studies, monitoring efforts, public access to the data and regulations regarding cyanobacteria and cyanotoxins highlights the need to rethink cyanobacterial bloom monitoring, seeking common criteria. General policies leading to solid frameworks based on defined criteria are needed to improve the assessment of cyanobacterial blooms in Latin America. This review represents a starting point toward common approaches for cyanobacterial monitoring and risk assessment, needed to improve regional environmental policies.
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Affiliation(s)
- Anabella Aguilera
- Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden.
| | - Viviana Almanza
- University of Concepcion, EULA Center, CRHIAM Center (ANID/FONDAP/15130015), Concepcion, Chile
| | - Signe Haakonsson
- Phytoplankton physiology and ecology group. Limnology Division, Facultad de Ciencias, Universidad de la República, Uruguay
| | | | - Gilberto A Benitez Rodas
- Laboratorio de Hidrobiología. Centro Multidisciplinario de Investigaciones Tecnológicas. Universidad Nacional de Asunción, Paraguay
| | - Mário U G Barros
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Brazil; Water Resources Management Company of Ceará, Brazil
| | - José Capelo-Neto
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Brazil
| | - Roberto Urrutia
- University of Concepcion, EULA Center, CRHIAM Center (ANID/FONDAP/15130015), Concepcion, Chile
| | - Luis Aubriot
- Phytoplankton physiology and ecology group. Limnology Division, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Sylvia Bonilla
- Phytoplankton physiology and ecology group. Limnology Division, Facultad de Ciencias, Universidad de la República, Uruguay
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Bringing the Social Back into Sustainability: Why Integrative Negotiation Matters. SUSTAINABILITY 2022. [DOI: 10.3390/su14116699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although economic and environmental paradigms of sustainability in organizations are highly researched, more work is needed to understand the mechanisms concerning the impact of social factors. Given the importance of social sustainability in current organizational contexts, we explore how gender dimensions (diversity, equality) and social capital dimensions (embeddedness, cohesion) can lead to the betterment of socially driven, sustainable outcomes. Our conceptual framework and propositions are centered on how negotiation—particularly in its integrative form—is likely to promote social sustainability. Our study contributes to the ongoing research on the latest socially driven trends of sustainability in organizations.
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A Dimensional Comparison between Evolutionary Algorithm and Deep Reinforcement Learning Methodologies for Autonomous Surface Vehicles with Water Quality Sensors. SENSORS 2021; 21:s21082862. [PMID: 33921649 PMCID: PMC8074202 DOI: 10.3390/s21082862] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/14/2021] [Accepted: 04/16/2021] [Indexed: 11/17/2022]
Abstract
The monitoring of water resources using Autonomous Surface Vehicles with water-quality sensors has been a recent approach due to the advances in unmanned transportation technology. The Ypacaraí Lake, the biggest water resource in Paraguay, suffers from a major contamination problem because of cyanobacteria blooms. In order to supervise the blooms using these on-board sensor modules, a Non-Homogeneous Patrolling Problem (a NP-hard problem) must be solved in a feasible amount of time. A dimensionality study is addressed to compare the most common methodologies, Evolutionary Algorithm and Deep Reinforcement Learning, in different map scales and fleet sizes with changes in the environmental conditions. The results determined that Deep Q-Learning overcomes the evolutionary method in terms of sample-efficiency by 50-70% in higher resolutions. Furthermore, it reacts better than the Evolutionary Algorithm in high space-state actions. In contrast, the evolutionary approach shows a better efficiency in lower resolutions and needs fewer parameters to synthesize robust solutions. This study reveals that Deep Q-learning approaches exceed in efficiency for the Non-Homogeneous Patrolling Problem but with many hyper-parameters involved in the stability and convergence.
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Henao E, Cantera JR, Rzymski P. Conserving the Amazon River Basin: The case study of the Yahuarcaca Lakes System in Colombia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 724:138186. [PMID: 32268285 DOI: 10.1016/j.scitotenv.2020.138186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/23/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
Colombia is the fourth contributor to the Amazon River Basin (ARB) by surface, and the third by mean annual runoff. The Yahuarcaca Lakes System (YLS), consisting of four large interconnected water bodies situated on the floodplain of Amazon River, was identified as one of the key areas for the conservation of freshwater biodiversity in the Colombian ARB. This review aimed to provide a general overview of YLS, present its environmental and biological features, identify main ecological and health threats, and propose mitigation strategies and future research prospects. A systematic search was performed using various databases. In summary, YLS harbors significant biodiversity and provides a number of ecological services for local communities, encompassing fish and drinking water supply and utilization of the floodplain for agriculture. Ensuring its sustainability requires attention from local and international authorities, collaboration with indigenous communities and future interdisciplinary research.
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Affiliation(s)
- Eliana Henao
- Department of Biology, Universidad del Valle, Cali, Colombia.
| | - Jaime R Cantera
- Department of Biology, Universidad del Valle, Cali, Colombia; Ecology of Estuaries and Mangrove Research Group (ECOMANGLARES), Universidad del Valle, Cali, Colombia
| | - Piotr Rzymski
- Department of Environmental Medicine, Poznan University of Medical Sciences, Poznań, Poland
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Peralta F, Arzamendia M, Gregor D, Reina DG, Toral S. A Comparison of Local Path Planning Techniques of Autonomous Surface Vehicles for Monitoring Applications: The Ypacarai Lake Case-study. SENSORS 2020; 20:s20051488. [PMID: 32182737 PMCID: PMC7085648 DOI: 10.3390/s20051488] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/05/2020] [Accepted: 03/07/2020] [Indexed: 11/24/2022]
Abstract
Local path planning is important in the development of autonomous vehicles since it allows a vehicle to adapt their movements to dynamic environments, for instance, when obstacles are detected. This work presents an evaluation of the performance of different local path planning techniques for an Autonomous Surface Vehicle, using a custom-made simulator based on the open-source Robotarium framework. The conducted simulations allow to verify, compare and visualize the solutions of the different techniques. The selected techniques for evaluation include A*, Potential Fields (PF), Rapidly-Exploring Random Trees* (RRT*) and variations of the Fast Marching Method (FMM), along with a proposed new method called Updating the Fast Marching Square method (uFMS). The evaluation proposed in this work includes ways to summarize time and safety measures for local path planning techniques. The results in a Lake environment present the advantages and disadvantages of using each technique. The proposed uFMS and A* have been shown to achieve interesting performance in terms of processing time, distance travelled and security levels. Furthermore, the proposed uFMS algorithm is capable of generating smoother routes.
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Affiliation(s)
- Federico Peralta
- Facultad de Ingeniería, Universidad Nacional de Asunción, 2160 San Lorenzo, Paraguay (M.A.); (D.G.)
| | - Mario Arzamendia
- Facultad de Ingeniería, Universidad Nacional de Asunción, 2160 San Lorenzo, Paraguay (M.A.); (D.G.)
| | - Derlis Gregor
- Facultad de Ingeniería, Universidad Nacional de Asunción, 2160 San Lorenzo, Paraguay (M.A.); (D.G.)
| | | | - Sergio Toral
- Universidad de Sevilla, 41004 Sevilla, Espana
- Correspondence:
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An Integrated Analysis of the Eutrophication Process in the Enxoé Reservoir within the DPSIR Framework. WATER 2018. [DOI: 10.3390/w10111576] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Enxoé reservoir in southern Portugal has been exhibiting the highest trophic state in the country since its early years of operation. The problem has attracted water managers’ and researchers’ attention as the reservoir is the water supply for two municipalities. Extensive research was thus conducted over the last few years, including field monitoring and modelling at the plot, catchment, and reservoir scales. This study now frames all partial findings within the Driver-Pressure-State-Impact-Response (DPSIR) framework to better understand the eutrophication process in the Enxoé reservoir. Agriculture and grazing were found to have a reduced role in the eutrophication of the reservoir, with annual sediment and nutrient loads being comparably smaller or similar to those reported for other Mediterranean catchments. Flash floods were the main mechanism for transporting particle elements to the reservoir, being in some cases able to carry up three times the average annual load. However, the main eutrophication mechanisms in the reservoir were P release from deposited sediment under anoxic conditions and the process of internal recycling of organic matter and nutrients. Reducing the P load from the catchment and deposited sediment could lead to a mesotrophic state level in the reservoir. However, this level would only be sustainable by limiting the P internal load ability to reach the photic zone.
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