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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. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 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] [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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Tang T, Jia X, Jiang W, Cai Q. Multi-scale temporal dynamics of epilithic algal assemblages: evidence from a Chinese subtropical mountain river network. HYDROBIOLOGIA 2016; 770:289-299. [DOI: 10.1007/s10750-015-2603-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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Gillett ND, Pan Y, Eli Asarian J, Kann J. Spatial and temporal variability of river periphyton below a hypereutrophic lake and a series of dams. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 541:1382-1392. [PMID: 26479912 DOI: 10.1016/j.scitotenv.2015.10.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 10/07/2015] [Accepted: 10/08/2015] [Indexed: 06/05/2023]
Abstract
Klamath River is described as an "upside-down" river due to its origins from the hypereutrophic Upper Klamath Lake (UKL) and hydrology that is heavily regulated by upstream dams. Understanding the lake and reservoir effects on benthic communities in the river can inform important aspects of its water quality dynamics. Periphyton samples were collected in May-November from 2004, 2006-2013 at nine long-term monitoring sites along 306 river km below UKL and a series of dams (n=299). Cluster analysis of periphyton assemblages identified three statistically different periphyton groups (denoted Groups 1-3). Group 1 occurred primarily in the upstream reach for June-October and had a higher percentage of sestonic species, including the cyanobacteria Aphanizomenon flos-aquae and Microcystis aeruginosa, consistent with the presence of upstream reservoirs. Group 2 had the highest relative biomass of diatoms and lowest relative biomass of cyanobacteria. Sites in the lower reach of the Klamath River fell into Group 2 in May-June and transitioning into Group 3 for July-October. Group 3 was dominated by nitrogen (N)-fixing species, including three diatoms (Epithemia sorex, Epithemia turgida, and Rhopalodia gibba) with cyanobacterial endosymbionts and the cyanobacterium Calothrix sp. Periphyton assemblages were strongly associated with temporal variations in flow conditions (e.g., decreasing flow from spring to fall) and spatial gradients in nutrient concentrations (e.g., decreasing from upstream to downstream). The inverse longitudinal relationship between periphyton biomass and nutrients may be explained by the ability of benthic N-fixers (Group 3) to overcome N limitation. Overall results showed a strong inverse relationship between the relative biomass of N-fixers and nitrogen concentrations and flow. This long-term dataset provides valuable insight into Klamath River's seasonal and longitudinal patterns of benthic algal communities and associated environmental variables. Our findings can inform river management decisions such as reducing upstream nutrient loads, setting flow regimes, and potential dam removals.
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Affiliation(s)
- Nadia D Gillett
- Environmental Science and Management, Portland State University, PO Box 751, Portland, OR 97207, USA.
| | - Yangdong Pan
- Environmental Science and Management, Portland State University, PO Box 751, Portland, OR 97207, USA
| | - J Eli Asarian
- Riverbend Sciences, PO Box 2874, Weaverville, CA 96093, USA
| | - Jacob Kann
- Aquatic Ecosystem Sciences, 295 East Main St., Ashland, OR 97520, USA
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