Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | In situ measurement of Daphnia longispina grazing on algae and bacteria in a high mountain lake (Lake Paione Superiore, Northern Italy) by using fluorescently labelled cells |
| Abstract | Grazing impact of Daphnia longispina on phytoplankton and bacteria in Lake Paione Superiore (Northern Italy) was evaluated using fluorescently labeled cells in short-term in situ experiments. Structure and size distribution of Daphnia were studied weekly from its appearance in July to its decline in September. Relative importance of algae and bacteria in the diet varied over time, as did consequently the relative impact of Daphnia on the phytoplankton and bacteria populations. Biomass of bacteria in the diet of Daphnia varied from 1 to 42%, and was highest at the beginning of population development when young individuals dominated. The percent biomass of algae in the diet increased with population development, ranging from 58 to 99%. Daphnia population consumed per hour 0.04-1.8% of bacteria and 0.3-17.6% of phytoplankton abundances. |
| Source | Water, air, & soil pollution. Focus 2, pp. 343–357 |
| Keywords | algae and bacteriaDaphnia longispinafluorescence labelinghigh mountain lakeingestion |
| Journal | Water, air, & soil pollution. Focus |
| Editor | Kluwer Academic Publishers, Boston, Paesi Bassi |
| Year | 2002 |
| Type | Articolo in rivista |
| Authors | Riccardi N. |
| Text | 52735 2002 algae and bacteria Daphnia longispina fluorescence labeling high mountain lake ingestion In situ measurement of Daphnia longispina grazing on algae and bacteria in a high mountain lake Lake Paione Superiore, Northern Italy by using fluorescently labelled cells Riccardi N. Istituto per lo Studio degli Ecosistemi CNR, Largo Tonolli 50, 28922 Verbania Pallanza, Italy Grazing impact of Daphnia longispina on phytoplankton and bacteria in Lake Paione Superiore Northern Italy was evaluated using fluorescently labeled cells in short term in situ experiments. Structure and size distribution of Daphnia were studied weekly from its appearance in July to its decline in September. Relative importance of algae and bacteria in the diet varied over time, as did consequently the relative impact of Daphnia on the phytoplankton and bacteria populations. Biomass of bacteria in the diet of Daphnia varied from 1 to 42%, and was highest at the beginning of population development when young individuals dominated. The percent biomass of algae in the diet increased with population development, ranging from 58 to 99%. Daphnia population consumed per hour 0.04 1.8% of bacteria and 0.3 17.6% of phytoplankton abundances. 2 Published version In situ measurement of Daphnia longispina grazing on algae and bacteria in a high mountain lake by using fluorescently labelled cells Riccardi_Daphnia_grazing.pdf Articolo in rivista Kluwer Academic Publishers 1567 7230 Water, air, soil pollution. Focus Water, air, soil pollution. Focus Water, air soil pollution. Water, air, and soil pollution nicolettarita.riccardi RICCARDI NICOLETTA RITA |