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Magri M, Bondavalli C, Bartoli M, Benelli S, Žilius M, Petkuviene J, Vybernaite-Lubiene I, Vaičiūtė D, Grinienė E, Zemlys P, Morkūnė R, Daunys D, Solovjova S, Bučas M, Gasiūnaitė ZR, Baziukas-Razinkovas A, Bodini A. Temporal and spatial differences in nitrogen and phosphorus biogeochemistry and ecosystem functioning of a hypertrophic lagoon (Curonian Lagoon, SE Baltic Sea) revealed via Ecological Network Analysis. Sci Total Environ 2024; 921:171070. [PMID: 38382608 DOI: 10.1016/j.scitotenv.2024.171070] [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: 11/03/2023] [Revised: 02/05/2024] [Accepted: 02/16/2024] [Indexed: 02/23/2024]
Abstract
In coastal lagoons, eutrophication and hydrology are interacting factors that produce distortions in biogeochemical nitrogen (N) and phosphorus (P) cycles. Such distortions affect nutrient relative availability and produce cascade consequences on primary producer's community and ecosystem functioning. In this study, the seasonal functioning of a coastal lagoon was investigated with a multielement approach, via the construction and analysis of network models. Spring and summer networks, both for N and P flows, have been simultaneously compiled for the northern transitional and southern confined area of the hypertrophic Curonian Lagoon (SE Baltic Sea). Ecological Network Analysis was applied to address the combined effect of hydrology and seasonality on biogeochemical processes. Results suggest that the ecosystem is more active and presents higher N and P fluxes in summer compared to spring, regardless of the area. Furthermore, larger internal recycling characterizes the confined compared to the transitional area, regardless of the season. The two areas differed in the fate of available nutrients. The transitional area received large riverine inputs that were mainly transferred to the sea without the conversion into primary producers' biomass. The confined area had fewer inputs but proportionally larger conversion into phytoplankton biomass. In summer, particularly in the confined area, primary production was inefficiently consumed by herbivores. Most phytoplanktonic N and P, in the confined area more than in the transitional area, were conveyed to the detritus pathway where P, more than N, was recycled, contributing to the unbalance in N:P stoichiometry and favouring N-fixing cyanobacteria over other phytoplankton groups. The findings of this study provide a comprehensive understanding of N and P circulation patterns in lagoon areas characterized by different hydrology. They also support the importance of a stoichiometric approach to trace relative differences in N and P recycling and abundance, that promote blooms, drive algal communities and whole ecosystem functioning.
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Affiliation(s)
- Monia Magri
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 33/A, 43124 Parma, Italy; Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Cristina Bondavalli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 33/A, 43124 Parma, Italy
| | - Marco Bartoli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 33/A, 43124 Parma, Italy; Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania; Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn - National Institute of Marine Biology, Ecology and Biotechnology, Genoa Marine Center, Genoa, Italy.
| | - Sara Benelli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 33/A, 43124 Parma, Italy.
| | - Mindaugas Žilius
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Jolita Petkuviene
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Irma Vybernaite-Lubiene
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Diana Vaičiūtė
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Evelina Grinienė
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Petras Zemlys
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Rasa Morkūnė
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Darius Daunys
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Sabina Solovjova
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania
| | - Martynas Bučas
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | - Zita Rasuole Gasiūnaitė
- Marine Research Institute, University of Klaipeda, Universiteto al. 17, 92294, Klaipeda, Lithuania.
| | | | - Antonio Bodini
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 33/A, 43124 Parma, Italy.
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Jansson A, Klais‐Peets R, Grinienė E, Rubene G, Semenova A, Lewandowska A, Engström‐Öst J. Functional shifts in estuarine zooplankton in response to climate variability. Ecol Evol 2020; 10:11591-11606. [PMID: 33144986 PMCID: PMC7593182 DOI: 10.1002/ece3.6793] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 07/09/2020] [Accepted: 07/14/2020] [Indexed: 11/12/2022] Open
Abstract
Functional traits are becoming more common in the analysis of marine zooplankton community dynamics associated with environmental change. We used zooplankton groups with common functional properties to assess long-term trends in the zooplankton caused by certain environmental conditions in a highly eutrophicated gulf.Time series of zooplankton traits have been collected since the 1960s in the Gulf of Riga, Baltic Sea, and were analyzed using a combination of multivariate methods (principal coordinate analysis) and generalized additive models.One of the most significant changes was the considerable increase in the amount of the zooplankton functional groups (FGR) in coastal springtime communities, and dominance shifts from more complex to simpler organism groups-cladocerans and rotifers.The results also show that functional trait organism complexity (body size) decreased considerably due to cladoceran and rotifer increase following elevated water temperature. Salinity and oxygen had negligible effects on the zooplankton community.
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Affiliation(s)
- Anna Jansson
- Novia University of Applied SciencesEkenäsFinland
| | | | | | - Gunta Rubene
- Fish Resources Research DepartmentInstitute of Food Safety, Animal Health and EnvironmentRigaLatvia
| | - Anna Semenova
- Atlantic Branch of ‘Russian Federal Research Institute of Fisheries and Oceanography’ (AtlantNIRO)KaliningradRussia
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