Ecological Importance of Alkaline Phosphatase Activity in Changing Marine Environmental Conditions
The effects of changing hydrological and climatic conditions on the dynamics of phosphorus (P) were studied in the Northern Adriatic Sea (NA), a coastal system currently affected by these changes. P limitation is one of the key stresses in the NA and it is a globally important phenomenon in aquatic...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/19/2750 |
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| author | Ingrid Ivančić Romina Kraus Mirjana Najdek Stefano Cozzi |
| author_facet | Ingrid Ivančić Romina Kraus Mirjana Najdek Stefano Cozzi |
| author_sort | Ingrid Ivančić |
| collection | DOAJ |
| description | The effects of changing hydrological and climatic conditions on the dynamics of phosphorus (P) were studied in the Northern Adriatic Sea (NA), a coastal system currently affected by these changes. P limitation is one of the key stresses in the NA and it is a globally important phenomenon in aquatic ecosystems. Therefore, the response to P stress by inducing alkaline phosphatase activity (APA) was studied in characteristic water types in the NA, formed by the changing freshwater input in different thermic conditions. APA was important in providing P for microbial growth in upper waters dominated by assimilation during the warmer part of the year in stratified conditions. Contrarily, APA was not important during mixing in the colder part of the year, as well as in waters dominated by regeneration. In waters influenced by freshwater, temperature had no effect on APA, while in high-salinity waters, temperature was an important factor for APA increase. The highest APA occurred during riverine nutrients supply, indicating that the alteration of anthropogenic nutrient loads might strongly change P status in this coastal system. Furthermore, predicted increases in winter sea temperature and summer Po River discharge could delay the water column mixing, prolonging periods of P limitation. |
| first_indexed | 2024-03-10T06:48:00Z |
| format | Article |
| id | doaj.art-326377918d194a56a50a3049b5267f7f |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T06:48:00Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-326377918d194a56a50a3049b5267f7f2023-11-22T17:02:07ZengMDPI AGWater2073-44412021-10-011319275010.3390/w13192750Ecological Importance of Alkaline Phosphatase Activity in Changing Marine Environmental ConditionsIngrid Ivančić0Romina Kraus1Mirjana Najdek2Stefano Cozzi3Center for Marine Research, Ruđer Bošković Institute, G. Paliaga 5, HR-52210 Rovinj, CroatiaCenter for Marine Research, Ruđer Bošković Institute, G. Paliaga 5, HR-52210 Rovinj, CroatiaCenter for Marine Research, Ruđer Bošković Institute, G. Paliaga 5, HR-52210 Rovinj, CroatiaCNR-ISMAR, Marine Sciences Institute, Area Science Park-Basovizza, Strada Statale 14, 34149 Trieste, ItalyThe effects of changing hydrological and climatic conditions on the dynamics of phosphorus (P) were studied in the Northern Adriatic Sea (NA), a coastal system currently affected by these changes. P limitation is one of the key stresses in the NA and it is a globally important phenomenon in aquatic ecosystems. Therefore, the response to P stress by inducing alkaline phosphatase activity (APA) was studied in characteristic water types in the NA, formed by the changing freshwater input in different thermic conditions. APA was important in providing P for microbial growth in upper waters dominated by assimilation during the warmer part of the year in stratified conditions. Contrarily, APA was not important during mixing in the colder part of the year, as well as in waters dominated by regeneration. In waters influenced by freshwater, temperature had no effect on APA, while in high-salinity waters, temperature was an important factor for APA increase. The highest APA occurred during riverine nutrients supply, indicating that the alteration of anthropogenic nutrient loads might strongly change P status in this coastal system. Furthermore, predicted increases in winter sea temperature and summer Po River discharge could delay the water column mixing, prolonging periods of P limitation.https://www.mdpi.com/2073-4441/13/19/2750P limitationalkaline phosphatase activityclimate changesnutrientsorganic phosphorusmicrobial biomass |
| spellingShingle | Ingrid Ivančić Romina Kraus Mirjana Najdek Stefano Cozzi Ecological Importance of Alkaline Phosphatase Activity in Changing Marine Environmental Conditions Water P limitation alkaline phosphatase activity climate changes nutrients organic phosphorus microbial biomass |
| title | Ecological Importance of Alkaline Phosphatase Activity in Changing Marine Environmental Conditions |
| title_full | Ecological Importance of Alkaline Phosphatase Activity in Changing Marine Environmental Conditions |
| title_fullStr | Ecological Importance of Alkaline Phosphatase Activity in Changing Marine Environmental Conditions |
| title_full_unstemmed | Ecological Importance of Alkaline Phosphatase Activity in Changing Marine Environmental Conditions |
| title_short | Ecological Importance of Alkaline Phosphatase Activity in Changing Marine Environmental Conditions |
| title_sort | ecological importance of alkaline phosphatase activity in changing marine environmental conditions |
| topic | P limitation alkaline phosphatase activity climate changes nutrients organic phosphorus microbial biomass |
| url | https://www.mdpi.com/2073-4441/13/19/2750 |
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