Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Could the extreme meteorological events in Lake Maggiore watershed determine a climate-driven eutrophication process? |
| Abstract | Lake Maggiore has reached a stable oligotrophic status after a recovery process from mesotrophy that began in the early 1980s. However, the most recent phytoplankton and water chemistry data seem to indicate that various changes are taking place, including a slight increase in TP values, and almost regular blooms have occurred since 2005. Meteoclimatic data collected over the last few decades in the Lake Maggiore watershed highlight an increase in the frequency of extreme rainfall events. Here, for the period 2000-2013, we analyse the relationships between the phytoplankton dynamics and selected extreme precipitation events, in order to evaluate the possible role of rainfall in affecting the nutrient availability and phytoplankton dynamics. Among the algal groups, cyanobacteria showed the strongest relationship with the precipitation pattern, particularly on a short-term temporal scale. Our results support the hypothesis that rainfall may lead to a short-term increase in nutrients that stimulate the growth of phytoplankton and the development of blooms in summer, when epilimnetic waters are usually nutrient depleted. The almost regular cyanobacterial blooms recorded in Lake Maggiore since 2005 can be interpreted as a response to changing precipitation patterns and therefore as a sign of climate-induced eutrophication. |
| Source | Hydrobiologia (The Hague. Print) 824 (1), pp. 163–175 |
| Keywords | Precipitation Phytoplankton Nutrients Cyanobacteria Long-term study |
| Journal | Hydrobiologia (The Hague. Print) |
| Editor | Kluwer Academic Publishers, Boston, Paesi Bassi |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10750-018-3549-4 |
| Authors | Morabito G.; Rogora M.; Austoni M.; Ciampittiello M. |
| Text | 399132 2018 10.1007/s10750 018 3549 4 Scopus 2 s2.0 85042614425 ISI Web of Science WOS 000448578500009 Precipitation Phytoplankton Nutrients Cyanobacteria Long term study Could the extreme meteorological events in Lake Maggiore watershed determine a climate driven eutrophication process Morabito G.; Rogora M.; Austoni M.; Ciampittiello M. CNR Institute of Ecosystem Study, L.go Tonolli 50, Verbania Pallanza, 28922, , Italy Lake Maggiore has reached a stable oligotrophic status after a recovery process from mesotrophy that began in the early 1980s. However, the most recent phytoplankton and water chemistry data seem to indicate that various changes are taking place, including a slight increase in TP values, and almost regular blooms have occurred since 2005. Meteoclimatic data collected over the last few decades in the Lake Maggiore watershed highlight an increase in the frequency of extreme rainfall events. Here, for the period 2000 2013, we analyse the relationships between the phytoplankton dynamics and selected extreme precipitation events, in order to evaluate the possible role of rainfall in affecting the nutrient availability and phytoplankton dynamics. Among the algal groups, cyanobacteria showed the strongest relationship with the precipitation pattern, particularly on a short term temporal scale. Our results support the hypothesis that rainfall may lead to a short term increase in nutrients that stimulate the growth of phytoplankton and the development of blooms in summer, when epilimnetic waters are usually nutrient depleted. The almost regular cyanobacterial blooms recorded in Lake Maggiore since 2005 can be interpreted as a response to changing precipitation patterns and therefore as a sign of climate induced eutrophication. 824 Published version http //www.scopus.com/inward/record.url eid=2 s2.0 85042614425 partnerID=q2rCbXpz Articolo 2018_Hydrobiologia_824_163_175.pdf Articolo in rivista Kluwer Academic Publishers 0018 8158 Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia. The Hague. Print Hydrobiologia Dordrecht The Hague. Print Hydrobiologia Boston The Hague. Print Hydrobiologia London The Hague. Print martina.austoni AUSTONI MARTINA giuseppe.morabito MORABITO GIUSEPPE marzia.ciampittiello CIAMPITTIELLO MARZIA michela.rogora ROGORA MICHELA |