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Article

Multiple Evidence for Climate Patterns Influencing Ecosystem Productivity across Spatial Gradients in the Venice Lagoon

Dipartimento di Scienze Ambientali, Informatica e Statistica, Università Ca’ Foscari, Via Torino 155, 30170 Venezia, Italy
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Academic Editor: Juan Miguel Soria
J. Mar. Sci. Eng. 2021, 9(4), 363; https://doi.org/10.3390/jmse9040363
Received: 17 February 2021 / Revised: 23 March 2021 / Accepted: 25 March 2021 / Published: 29 March 2021
(This article belongs to the Special Issue Coastal Lagoon Ecology)
Effects of climatic changes in transitional ecosystems are often not linear, with some areas likely experiencing faster or more intense responses, which something important to consider in the perspective of climate forecasting. In this study of the Venice lagoon, time series of the past decade were used, and primary productivity was estimated from hourly oxygen data using a published model. Temporal and spatial patterns of water temperature, salinity and productivity time series were identified by applying clustering analysis. Phytoplankton and nutrient data from long-term surveys were correlated to primary productivity model outputs. pmax, the maximum oxygen production rate in a given day, was found to positively correlate with plankton variables measured in surveys. Clustering analysis showed the occurrence of summer heatwaves in 2008, 2013, 2015 and 2018 and three warm prolonged summers (2012, 2017, 2019) coincided with lower summer pmax values. Spatial effects in terms of temperature were found with segregation between confined and open areas, although the patterns varied from year to year. Production and respiration differences showed that the lagoon, despite seasonality, was overall heterotrophic, with internal water bodies having greater values of heterotrophy. Warm, dry years with high salinity had lower degrees of summer autotrophy. View Full-Text
Keywords: heterotrophic; k-means clustering; oxygen; primary production; salinity; transitional ecosystems; water temperature heterotrophic; k-means clustering; oxygen; primary production; salinity; transitional ecosystems; water temperature
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MDPI and ACS Style

Bertolini, C.; Royer, E.; Pastres, R. Multiple Evidence for Climate Patterns Influencing Ecosystem Productivity across Spatial Gradients in the Venice Lagoon. J. Mar. Sci. Eng. 2021, 9, 363. https://doi.org/10.3390/jmse9040363

AMA Style

Bertolini C, Royer E, Pastres R. Multiple Evidence for Climate Patterns Influencing Ecosystem Productivity across Spatial Gradients in the Venice Lagoon. Journal of Marine Science and Engineering. 2021; 9(4):363. https://doi.org/10.3390/jmse9040363

Chicago/Turabian Style

Bertolini, Camilla, Edouard Royer, and Roberto Pastres. 2021. "Multiple Evidence for Climate Patterns Influencing Ecosystem Productivity across Spatial Gradients in the Venice Lagoon" Journal of Marine Science and Engineering 9, no. 4: 363. https://doi.org/10.3390/jmse9040363

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