Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Response of planktonic communities to calcium hydroxide addition in a hardwater eutrophic lake: results from a mesocosm experiment |
| Abstract | The main focus of this study was to investigate the effects of lime treatment with Ca(OH)2 on a hypereutrophic hardwater lake (Lake Alserio, Northern Italy), focusing on its impact on plankton communities. We performed a mesocosm experiment using two large enclosures, one for treatment and one control, in the lake. The addition of Ca(OH)2 proved to be effective in reducing phosphorus concentration, but the effect was limited in time. Redissolution of the precipitating calcium carbonate as it came into contact with the deep water determined a phosphorus increase about 2 weeks after the liming. The liming had a strong impact on the plankton assemblage, as was demonstrated by the sharp decrease in phytoplankton and zooplankton biomass and density, and 1 month after the treatment we observed a different taxonomic composition inside the enclosure from that of the lake. The result of the experiment showed that liming with Ca(OH)2 can be regarded as a suitable treatment for accelerating recovery of the lake. Multiple treatments will be necessary to improve the trophic level over a longer period. |
| Source | Limnology (Tokyo, Print) 8, pp. 121–130 |
| Keywords | eutrophicationrestorationlimingphytoplanktonzooplankton |
| Journal | Limnology (Tokyo, Print) |
| Editor | Springer., Tokyo, Giappone |
| Year | 2007 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10201-007-0202-8 |
| Authors | Leoni B.(1); Morabito G.(2); Rogora M.(2); Pollastro D.(2); Mosello R.(2); Arisci S.(2); Forasacco E.(1); Garibaldi L.(1) |
| Text | 52970 2007 10.1007/s10201 007 0202 8 ISI Web of Science WOS 000248820400005 eutrophication restoration liming phytoplankton zooplankton Response of planktonic communities to calcium hydroxide addition in a hardwater eutrophic lake results from a mesocosm experiment Leoni B. 1 ; Morabito G. 2 ; Rogora M. 2 ; Pollastro D. 2 ; Mosello R. 2 ; Arisci S. 2 ; Forasacco E. 1 ; Garibaldi L. 1 1 Dipartimento di Scienze dell Ambiente e del Territorio, Universita degli Studi di Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy 2 CNR Istituto per lo Studio degli Ecosistemi, Verbania Pallanza, Italy The main focus of this study was to investigate the effects of lime treatment with Ca OH 2 on a hypereutrophic hardwater lake Lake Alserio, Northern Italy , focusing on its impact on plankton communities. We performed a mesocosm experiment using two large enclosures, one for treatment and one control, in the lake. The addition of Ca OH 2 proved to be effective in reducing phosphorus concentration, but the effect was limited in time. Redissolution of the precipitating calcium carbonate as it came into contact with the deep water determined a phosphorus increase about 2 weeks after the liming. The liming had a strong impact on the plankton assemblage, as was demonstrated by the sharp decrease in phytoplankton and zooplankton biomass and density, and 1 month after the treatment we observed a different taxonomic composition inside the enclosure from that of the lake. The result of the experiment showed that liming with Ca OH 2 can be regarded as a suitable treatment for accelerating recovery of the lake. Multiple treatments will be necessary to improve the trophic level over a longer period. 8 Articolo pubblicato Leoni_etal_Limnology2007.pdf Articolo in rivista Springer. 1439 8621 Limnology Tokyo, Print Limnology Tokyo, Print Limnology Tokyo, Print Limnology. Tokyo, Print ARISCI SILVIA giuseppe.morabito MORABITO GIUSEPPE michela.rogora ROGORA MICHELA rosario.mosello MOSELLO ROSARIO TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |