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Kermorvant C, Liquet B, Litt G, Mengersen K, Peterson EE, Hyndman RJ, Jones JB, Leigh C. Understanding links between water-quality variables and nitrate concentration in freshwater streams using high frequency sensor data. PLoS One 2023; 18:e0287640. [PMID: 37390064 PMCID: PMC10313027 DOI: 10.1371/journal.pone.0287640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 06/12/2023] [Indexed: 07/02/2023] Open
Abstract
Real-time monitoring using in-situ sensors is becoming a common approach for measuring water-quality within watersheds. High-frequency measurements produce big datasets that present opportunities to conduct new analyses for improved understanding of water-quality dynamics and more effective management of rivers and streams. Of primary importance is enhancing knowledge of the relationships between nitrate, one of the most reactive forms of inorganic nitrogen in the aquatic environment, and other water-quality variables. We analysed high-frequency water-quality data from in-situ sensors deployed in three sites from different watersheds and climate zones within the National Ecological Observatory Network, USA. We used generalised additive mixed models to explain the nonlinear relationships at each site between nitrate concentration and conductivity, turbidity, dissolved oxygen, water temperature, and elevation. Temporal auto-correlation was modelled with an auto-regressive-moving-average (ARIMA) model and we examined the relative importance of the explanatory variables. Total deviance explained by the models was high for all sites (99%). Although variable importance and the smooth regression parameters differed among sites, the models explaining the most variation in nitrate contained the same explanatory variables. This study demonstrates that building a model for nitrate using the same set of explanatory water-quality variables is achievable, even for sites with vastly different environmental and climatic characteristics. Applying such models will assist managers to select cost-effective water-quality variables to monitor when the goals are to gain a spatial and temporal in-depth understanding of nitrate dynamics and adapt management plans accordingly.
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Affiliation(s)
- Claire Kermorvant
- Le CNRS et l’Université de Pau et des Pays de l’Adour, Laboratoire de Mathématiques et de leurs Applications de Pau, Anglet, France
| | - Benoit Liquet
- Le CNRS et l’Université de Pau et des Pays de l’Adour, Laboratoire de Mathématiques et de leurs Applications de Pau, Anglet, France
- School of Mathematical and Physical Sciences, Macquarie University, Sydney, New South Wales, Australia
- ARC Centre of Excellence for Mathematics and Statistical Frontiers, Brisbane, Queensland, Australia
| | - Guy Litt
- Battelle, National Ecological Observatory Network, Boulder, Colorado, United States of America
| | - Kerrie Mengersen
- ARC Centre of Excellence for Mathematics and Statistical Frontiers, Brisbane, Queensland, Australia
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Erin E. Peterson
- ARC Centre of Excellence for Mathematics and Statistical Frontiers, Brisbane, Queensland, Australia
- Peterson Consulting, Brisbane, Queensland, Australia
| | - Rob J. Hyndman
- ARC Centre of Excellence for Mathematics and Statistical Frontiers, Brisbane, Queensland, Australia
- Department of Econometrics and Business Statistics, Monash University, Clayton, Victoria, Australia
| | - Jeremy B. Jones
- Institute of Arctic Biology and Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, Alaska, United States of America
| | - Catherine Leigh
- ARC Centre of Excellence for Mathematics and Statistical Frontiers, Brisbane, Queensland, Australia
- Biosciences and Food Technology Discipline and School of Science, RMIT University, Bundoora, Victoria, Australia
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Kermorvant C, Liquet B, Litt G, Jones JB, Mengersen K, Peterson EE, Hyndman RJ, Leigh C. Reconstructing Missing and Anomalous Data Collected from High-Frequency In-Situ Sensors in Fresh Waters. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:12803. [PMID: 34886529 PMCID: PMC8657025 DOI: 10.3390/ijerph182312803] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/26/2021] [Accepted: 12/02/2021] [Indexed: 11/16/2022]
Abstract
In situ sensors that collect high-frequency data are used increasingly to monitor aquatic environments. These sensors are prone to technical errors, resulting in unrecorded observations and/or anomalous values that are subsequently removed and create gaps in time series data. We present a framework based on generalized additive and auto-regressive models to recover these missing data. To mimic sporadically missing (i) single observations and (ii) periods of contiguous observations, we randomly removed (i) point data and (ii) day- and week-long sequences of data from a two-year time series of nitrate concentration data collected from Arikaree River, USA, where synoptically collected water temperature, turbidity, conductance, elevation, and dissolved oxygen data were available. In 72% of cases with missing point data, predicted values were within the sensor precision interval of the original value, although predictive ability declined when sequences of missing data occurred. Precision also depended on the availability of other water quality covariates. When covariates were available, even a sudden, event-based peak in nitrate concentration was reconstructed well. By providing a promising method for accurate prediction of missing data, the utility and confidence in summary statistics and statistical trends will increase, thereby assisting the effective monitoring and management of fresh waters and other at-risk ecosystems.
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Affiliation(s)
- Claire Kermorvant
- Laboratoire de Mathématiques et de Leurs Applications de Pau Fédération MIRA, UMR CNRS 5142, Université de Pau et des Pays de l’Adour, 64600 Anglet, France;
| | - Benoit Liquet
- Laboratoire de Mathématiques et de Leurs Applications de Pau Fédération MIRA, UMR CNRS 5142, Université de Pau et des Pays de l’Adour, 64600 Anglet, France;
- Department of Mathematics and Statistics, Macquarie University, Sydney, NSW 2109, Australia
| | - Guy Litt
- National Ecological Observatory Network, Battelle Boulder, Boulder, CO 80301, USA;
| | - Jeremy B. Jones
- Institute of Arctic Biology and Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK 99775, USA;
| | - Kerrie Mengersen
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, QLD 4000, Australia;
- ARC Centre of Excellence for Mathematics and Statistical Frontiers, Melbourne, VIC 3000, Australia; (E.E.P.); (R.J.H.); (C.L.)
| | - Erin E. Peterson
- ARC Centre of Excellence for Mathematics and Statistical Frontiers, Melbourne, VIC 3000, Australia; (E.E.P.); (R.J.H.); (C.L.)
- Peterson Consulting, Brisbane, QLD 4000, Australia
| | - Rob J. Hyndman
- ARC Centre of Excellence for Mathematics and Statistical Frontiers, Melbourne, VIC 3000, Australia; (E.E.P.); (R.J.H.); (C.L.)
- Department of Econometrics and Business Statistics, Monash University, Clayton, VIC 3800, Australia
| | - Catherine Leigh
- ARC Centre of Excellence for Mathematics and Statistical Frontiers, Melbourne, VIC 3000, Australia; (E.E.P.); (R.J.H.); (C.L.)
- Biosciences and Food Technology Discipline, School of Science, RMIT University, Bundoora, VIC 3083, Australia
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Terui A, Finlay JC, Hansen AT, Kozarek JL. Quantifying cryptic function loss during community disassembly. J Appl Ecol 2019. [DOI: 10.1111/1365-2664.13507] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Akira Terui
- Department of Ecology, Evolution, and Behavior University of Minnesota Saint Paul MN USA
- Department of Forest Science Graduate School of Agriculture Hokkaido University Sapporo Japan
- Department of Biology University of North Carolina at Greensboro Greensboro NC USA
| | - Jacques C. Finlay
- Department of Ecology, Evolution, and Behavior University of Minnesota Saint Paul MN USA
- St. Anthony Falls Laboratory University of Minnesota Minneapolis MN USA
| | - Amy T. Hansen
- Department of Civil, Environmental and Architectural Engineering University of Kansas Lawrence KS USA
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Amoatey P, Baawain MS. Effects of pollution on freshwater aquatic organisms. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2019; 91:1272-1287. [PMID: 31486195 DOI: 10.1002/wer.1221] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 07/16/2019] [Accepted: 08/19/2019] [Indexed: 05/24/2023]
Abstract
This paper presents the reviews of scientific papers published in 2018 issues on the effects of anthropogenic pollution on the aquatic organisms dwelling in freshwater ecosystem at global scale. The first part of the study provides the summary of relevant literature reviews followed by field and survey based studies. The second part is based on categories of different classes/sources of pollutants which affect freshwater organism. This is composed of several sections including metals and metalloids, wastewater and effluents, sediments, nutrients, pharmaceuticals, polycyclic aromatic hydrocarbons, flame retardants, persistent organic pollutants, pharmaceuticals and illicit drugs, emerging contaminants, pesticides, herbicides, and endocrine disruptors. The final part of the study highlights the reviews of published research work on new pollutants such as microplastics and engineered nanoparticles which affect the freshwater organisms. PRACTITIONER POINTS: Heavy metals concentrations should be assessed at nano-scale in aquatic environment. Air pollutants could have long-term effects on freshwater ecosystem. Future studies should focus on bioremediations of freshwater pollution.
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Affiliation(s)
- Patrick Amoatey
- Department of Civil and Architectural Engineering, College of Engineering, Sultan Qaboos University, Muscat, Sultanate of Oman
| | - Mahad Said Baawain
- Department of Civil and Architectural Engineering, College of Engineering, Sultan Qaboos University, Muscat, Sultanate of Oman
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Douda K, Zhao S, Vodáková B, Horký P, Grabicová K, Božková K, Grabic R, Slavík O, Randák T. Host-parasite interaction as a toxicity test endpoint using asymmetrical exposures. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 211:173-180. [PMID: 30991163 DOI: 10.1016/j.aquatox.2019.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/05/2019] [Accepted: 04/07/2019] [Indexed: 05/06/2023]
Abstract
Interspecific relationships frequently determine the effect a pollutant can have on an organism, and this is especially true in closely interacting species such as hosts and parasites. The high spatial and temporal variability of contaminant concentrations combined with the movement of aquatic biota can further influence the consequences that are associated with contamination. We used a full factorial design for the exposed and unexposed partners of the relationship between the parasitic larvae (glochidia) of the European freshwater mussel (Anodonta anatina) and its host fish (Squalius cephalus) to identify the sources of variation in the sublethal endpoints of species interaction (the intensity of parasite attachment, the spatial position of glochidia on the host body, and encapsulation success). We used the water-borne human pharmaceutical compounds methamphetamine (a central nervous system stimulant) and tramadol (an opioid) at environmentally relevant concentrations (˜ 6.7 and 3.8 nmol L-1 of methamphetamine and tramadol, respectively) as a proxy for contaminant exposure because these compounds are emerging aquatic stressors that are known for high spatial and temporal variability in their detected concentration levels. The relationship between the bivalve and the fish species was influenced by the preceding contact with both methamphetamine and tramadol, but this effect was highly asymmetric. Our experimental design enabled us to identify the specific changes in the relationship outcome that are elicited by the exposure of individual partners, such as the significant increase in glochidia infection success rate from 59.6 ± 3.9% to 78.7 ± 2.8% (means ± s.e.) that was associated with host exposure to methamphetamine. Additionally, the significant interaction effect of the exposure was demonstrated by the lowered proportion of glochidia attached to gills after the coexposure of both partners to tramadol. The impact of pharmaceuticals on wild aquatic host-parasite relationships provides an example of the risks that are associated with the unintentional discharge of biologically active compounds into freshwater habitats. Given the increasing evidence showing the ecological impact of waste pharmaceuticals, the use of multitrophic interaction endpoints after joint and unilateral exposures provides an important step towards the realistic risk assessment of these compounds.
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Affiliation(s)
- Karel Douda
- Department of Zoology and Fisheries, FAFNR, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic.
| | - Shuran Zhao
- Department of Zoology and Fisheries, FAFNR, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic
| | - Barbora Vodáková
- Department of Zoology and Fisheries, FAFNR, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic
| | - Pavel Horký
- Department of Zoology and Fisheries, FAFNR, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic
| | - Kateřina Grabicová
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Kristýna Božková
- Department of Zoology and Fisheries, FAFNR, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic
| | - Roman Grabic
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Ondřej Slavík
- Department of Zoology and Fisheries, FAFNR, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic
| | - Tomáš Randák
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
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Cano-Rocabayera O, de Sostoa A, Padrós F, Cárdenas L, Maceda-Veiga A. Ecologically relevant biomarkers reveal that chronic effects of nitrate depend on sex and life stage in the invasive fish Gambusia holbrooki. PLoS One 2019; 14:e0211389. [PMID: 30689670 PMCID: PMC6349331 DOI: 10.1371/journal.pone.0211389] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 01/11/2019] [Indexed: 12/05/2022] Open
Abstract
Agricultural intensification and shifts in precipitation regimes due to global climate change are expected to increase nutrient concentrations in aquatic ecosystems. However, the direct effects of nutrients widely present in wastewaters, such as nitrate, are poorly studied. Here, we use multiple indicators of fish health to experimentally test the effects of three ecologically relevant nitrate concentrations (<10, 50 and 250 mg NO3-/l) on wild-collected mosquitofish (Gambusia holbrooki), a species widely introduced for mosquito biocontrol in often eutrophic waters. Overall, biomarkers (histopathology, feeding assays, growth and caloric content and stable isotopes as indicators of energy content) did not detect overt signs of serious disease in juveniles, males or females of mosquitofish. However, males reduced food intake at the highest nitrate concentration compared to the controls and females. Similarly, juveniles reduced energy reserves without significant changes in growth or food intake. Calorimetry was positively associated with the number of perivisceral fat cells in juveniles, and the growth rate of females was negatively associated with δ15N signature in muscle. This study shows that females are more tolerant to nitrate than males and juveniles and illustrates the advantages of combing short- and long-term biomarkers in environmental risk assessment, including when testing for the adequacy of legal thresholds for pollutants.
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Affiliation(s)
- Oriol Cano-Rocabayera
- Department of Evolutionary biology, Ecology and Environmental Sciences–Institute of Research in Biodiversity (IRBio-UB), Universitat de Barcelona, Spain
- * E-mail:
| | - Adolfo de Sostoa
- Department of Evolutionary biology, Ecology and Environmental Sciences–Institute of Research in Biodiversity (IRBio-UB), Universitat de Barcelona, Spain
| | - Francesc Padrós
- Servei de Diagnòstic Patològic en Peixos, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Lorena Cárdenas
- Department of Evolutionary biology, Ecology and Environmental Sciences–Institute of Research in Biodiversity (IRBio-UB), Universitat de Barcelona, Spain
| | - Alberto Maceda-Veiga
- Department of Evolutionary biology, Ecology and Environmental Sciences–Institute of Research in Biodiversity (IRBio-UB), Universitat de Barcelona, Spain
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