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Žuna Pfeiffer T, Špoljarić Maronić D, Stević F, Galir Balkić A, Bek N, Martinović A, Mandir T, Nikolašević R, Janjić D. Plastisphere development in relation to the surrounding biotic communities. Environ Pollut 2022; 306:119380. [PMID: 35500716 DOI: 10.1016/j.envpol.2022.119380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 04/05/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
To study the early colonization processes, polyethylene terephthalate (PET) microfragments were immersed in Lake Sakadaš and the Drava River and sampled weekly together with the surrounding biotic communities - phytoplankton, zooplankton, epixylon in the lake and epilithon in the river. At the end of the study, a rise in water level occurred in the river, which altered the environmental conditions and plankton communities. In studied environments, all of the sampled biotic communities were diverse and abundant. Plastispheres formed in both waters by the seventh day of incubation and developed rapidly, reaching a peak in abundance on the last day of the study. Initial colonization was supported equally by planktonic and periphytic taxa in both environments, but after initial settlement, plastisphere assemblages were affected differently in the river and lake. This study suggests that PET microfragments are a suitable substrate for microphyte settlement and may provide an important pathway for their transport in dynamic freshwater floodplains and river systems.
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Affiliation(s)
- Tanja Žuna Pfeiffer
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Dubravka Špoljarić Maronić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Filip Stević
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia.
| | - Anita Galir Balkić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Nikolina Bek
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Ana Martinović
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Tomislav Mandir
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Rahela Nikolašević
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Doris Janjić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica Cara Hadrijana 8/A, HR-31000, Osijek, Croatia
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Calizza E, Favero F, Rossi D, Careddu G, Fiorentino F, Sporta Caputi S, Rossi L, Costantini ML. Isotopic biomonitoring of N pollution in rivers embedded in complex human landscapes. Sci Total Environ 2020; 706:136081. [PMID: 31862596 DOI: 10.1016/j.scitotenv.2019.136081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 05/24/2023]
Abstract
The dynamic and hierarchical structure of rivers, together with disruption of the natural river continuum by human activities, makes it difficult to identify and locate sources of nutrient pollution affecting receiving waters and observe its dispersion, thus impairing monitoring efforts. The identification of reliable indicators of anthropogenic nitrogen inputs in catchments is therefore key to achieving effective management of polluted rivers. We tested the capacity of N isotopic signatures (δ15N) of epilithon and snails to provide useful indications of organic and inorganic anthropogenic N inputs in three Mediterranean rivers differing in terms of surrounding land use and physicochemical conditions. We used a combined approach based on (i) analysis of nutrient concentrations in water, (ii) CORINE land cover classification and drainage patterns in catchments and (iii) isotopic analysis of river biota to verify whether isotopic variations were indicative of anthropic activities in the watershed, the associated alteration of water quality, and the consequent impact on snail abundance and diversity. Variation in the δ15N of epilithon within and between rivers reflected localised and diffuse N inputs from inorganic and organic sources. Negative epilithon δ15N values (<0‰) indicated inorganic pollution from agriculture. Values between 4‰ and 8‰ and those above 8‰ respectively indicated moderate organic pollution from urban areas, and high organic pollution, mostly from waste waters. The diversity and abundance of snails decreased with increasing water pollution. While their isotopic variations reflected between-river differences, they failed to indicate within-river variations in anthropogenic N inputs, since the proportion of epilithon in their diet varied along the rivers. Concluding, epilithon was a reliable indicator of anthropogenic N sources across a wide range of nutrient concentrations and anthropogenic inputs, and the proposed approach allowed us to determine the nature of nitrogen pollutants, their sources, location and dispersion along rivers embedded in complex human landscapes.
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Affiliation(s)
- E Calizza
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy; CoNISMa, piazzale Flaminio 9, 00196 Rome, Italy
| | - F Favero
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
| | - D Rossi
- CNR-Water Research Institute, Research Area RM1, via Salaria km 29.300 C.P.10, 00015 Monterotondo, RM, Italy
| | - G Careddu
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
| | - F Fiorentino
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
| | - S Sporta Caputi
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy.
| | - L Rossi
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy; CoNISMa, piazzale Flaminio 9, 00196 Rome, Italy
| | - M L Costantini
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy; CoNISMa, piazzale Flaminio 9, 00196 Rome, Italy
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Vidaković D, Krizmanić J, Dojčinović BP, Pantelić A, Gavrilović B, Živanović M, Novaković B, Ćirić M. Alkaline soda Lake Velika Rusanda (Serbia): the first insight into diatom diversity of this extreme saline lake. Extremophiles 2019; 23:347-357. [PMID: 30888506 DOI: 10.1007/s00792-019-01088-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 03/11/2019] [Indexed: 10/27/2022]
Abstract
Alkaline soda lakes are unique habitats found in specific geographic regions, usually with dry climate. The Carpathian Basin is one of those regions very important for habitat and biodiversity conservation in Europe, with natural soda lakes found in Austria, Hungary and Serbia. In comparison to other two countries from Central Europe, algal biodiversity studies of saline soda lakes in Serbia are scarce. Lake Velika Rusanda has the highest measured salinity of all saline lakes in the Carpathian Basin and there were no reports of its diatom species richness and diversity till now. We conducted 2-year investigation programme to study biodiversity and seasonal dynamics of diatoms in this lake. A total of 27 diatom taxa were found, almost all of them attached to reed and much less in benthos and plankton. Five new diatom species for Serbia were recorded, Craticula halopannonica, Navicymbula pusilla, Hantzschia weyprechtii, Nitzschia thermaloides and Navicula staffordiae. The last mentioned is new for Europe as well. Lake Velika Rusanda is inhabited mostly by alkaliphilous and halophilic diatoms. Since diatoms are used as bioindicators in soda lakes, our results will improve their further application in ecological status assessment of these fragile habitats in the Carpathian Basin.
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Affiliation(s)
- Danijela Vidaković
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, Njegoševa 12, Belgrade, 11000, Serbia.
| | - Jelena Krizmanić
- University of Belgrade, Faculty of Biology, Institute of Botany and Botanical Garden ''Jevremovac'', 43 Takovska, Belgrade, 11000, Serbia
| | - Biljana P Dojčinović
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Njegoševa 12, Belgrade, 11000, Serbia
| | - Ana Pantelić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Centre of Excellence in Environmental Chemistry and Engineering, Njegoševa 12, Belgrade, 11000, Serbia
| | - Bojan Gavrilović
- Serbian Academy of Sciences and Arts, Geographical Institute "Jovan Cvijić", Department of Physical Geography, Djure Jakšića 9, Belgrade, Serbia
| | - Milica Živanović
- University of Belgrade, Faculty of Geography, Studentski trg 3/3, Belgrade, 11000, Serbia
| | - Boris Novaković
- The Serbian Environmental Protection Agency, Ministry of Environmental Protection, Republic of Serbia, Ruže Jovanovića 27a, Belgrade, 11160, Serbia
| | - Miloš Ćirić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Njegoševa 12, Belgrade, 11000, Serbia
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Bełdowska M, Zgrundo A, Kobos J. Mercury in the Diatoms of Various Ecological Formations. Water Air Soil Pollut 2018; 229:168. [PMID: 29773924 PMCID: PMC5945792 DOI: 10.1007/s11270-018-3814-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 04/24/2018] [Indexed: 05/05/2023]
Abstract
Mercury is a neurotoxin, its main source in the human organism being fish and seafood. The first level in the marine food web is formed of planktonic and benthic photosynthetic microorganisms, which form a biofilm on the surface of the hard bottom (epilithon) or plants (epiphyton). They are carriers of nutritional as well as toxic substances and pass these on to subsequent levels of the trophic web. Their biomass is often dominated by diatoms. This was the basis for the presented study into Hg accumulation in epilithic, epiphytic and planktonic diatoms, which was carried out in 2012-2013 in the coastal zone of the Puck Lagoon and the Gulf of Gdańsk (southern Baltic). In this coastal area, both micro- and macroorganisms develop particularly intensively. The collected results indicate an increase in Hg concentration in the biofilm during the warm season which, with the lengthening of the vegetative period due to global warming in recent years, is of great significance. As a consequence, the annual mercury load entering the trophic web is larger in comparison with a year in which there is a long, cold winter. An important parameter influencing the accumulation of Hg was the function of those organisms from the biofilm-forming communities. In this case, the highest concentrations of Hg were measured in organisms forming high-profile guilds.
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Affiliation(s)
- Magdalena Bełdowska
- Institute of Oceanography, University of Gdańsk, Av. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland
| | - Aleksandra Zgrundo
- Institute of Oceanography, University of Gdańsk, Av. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland
| | - Justyna Kobos
- Institute of Oceanography, University of Gdańsk, Av. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland
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Boulêtreau S, Lyautey E, Dubois S, Compin A, Delattre C, Touron-Bodilis A, Mastrorillo S, Garabetian F. Warming-induced changes in denitrifier community structure modulate the ability of phototrophic river biofilms to denitrify. Sci Total Environ 2014; 466-467:856-863. [PMID: 23978584 DOI: 10.1016/j.scitotenv.2013.07.121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 07/16/2013] [Accepted: 07/31/2013] [Indexed: 06/02/2023]
Abstract
Microbial denitrification is the main nitrogen removing process in freshwater ecosystems. The aim of this study was to show whether and how water warming (+2.5 °C) drives bacterial diversity and structuring and how bacterial diversity affects denitrification enzymatic activity in phototrophic river biofilms (PRB). We used water warming associated to the immediate thermal release of a nuclear power plant cooling circuit to produce natural PRB assemblages on glass slides while testing 2 temperatures (mean temperature of 17 °C versus 19.5 °C). PRB were sampled at 2 sampling times during PRB accretion (6 and 21days) in both temperatures. Bacterial community composition was assessed using ARISA. Denitrifier community abundance and denitrification gene mRNA levels were estimated by q-PCR and qRT-PCR, respectively, of 5 genes encoding catalytic subunits of the denitrification key enzymes. Denitrification enzyme activity (DEA) was measured by the acetylene-block assay at 20 °C. A mean water warming of 2.5 °C was sufficient to produce contrasted total bacterial and denitrifier communities and, therefore, to affect DEA. Indirect temperature effect on DEA may have varied between sampling time, increasing by up to 10 the denitrification rate of 6-day-old PRB and decreasing by up to 5 the denitrification rate of 21-day-old PRB. The present results suggest that indirect effects of warming through changes in bacterial community composition, coupled to the strong direct effect of temperature on DEA already demonstrated in PRB, could modulate dissolved nitrogen removal by denitrification in rivers and streams.
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Affiliation(s)
- Stéphanie Boulêtreau
- Université de Toulouse, UPS, INP, EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement), 118 route de Narbonne, F-31062 Toulouse, France; CNRS, EcoLab, F-31062 Toulouse, France.
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