Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Connectivity and nestedness of the meta-community structure of moss dwelling bdelloid rotifers along a stream |
| Abstract | We analyzed meta-community structure of bdelloid rotifers colonizing mosses along an 80 meter section of Rio Valnava in NW Italy. Bdelloid rotifers are small animals living associated with a substratum; colonization in bdelloids can be produced by active animals moving along the riverbed, or by passive dormant propagules, moved by wind. To detect which kind of colonization might be stronger at different spatial scales, we designed a spatially nested sampling experiment at three hierarchical levels: (1) single sample, (2) 10 communities inside each pool, (3) complete section of 10 pools. Assessing species richness and species similarity of communities, and coherence and nestedness of bdelloid meta-communities, we found that different forces may drive species composition at different spatial scales: at the largest scale, colonization of propagules may over-ride direct dispersal between pools, while at the scale of the single pool, differential movements of species give a nested structure to the meta-communities. The number of species increased as the level of analysis increased, even though this study was carried out along only a small stream section. |
| Source | Hydrobiologia (The Hague. Print) 542, pp. 131–136 |
| Keywords | rotifera bdelloideaItalymeiofaunalotic environmentbenthic freshwater |
| Journal | Hydrobiologia (The Hague. Print) |
| Editor | Kluwer Academic Publishers, Boston, Paesi Bassi |
| Year | 2005 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10750-004-5495-6 |
| Authors | Fontaneto, D; Melone, G; Ricci, C |
| Text | 283723 2005 10.1007/s10750 004 5495 6 ISI Web of Science WOS 000231879200017 rotifera bdelloidea Italy meiofauna lotic environment benthic freshwater Connectivity and nestedness of the meta community structure of moss dwelling bdelloid rotifers along a stream Fontaneto, D; Melone, G; Ricci, C University of Milan We analyzed meta community structure of bdelloid rotifers colonizing mosses along an 80 meter section of Rio Valnava in NW Italy. Bdelloid rotifers are small animals living associated with a substratum; colonization in bdelloids can be produced by active animals moving along the riverbed, or by passive dormant propagules, moved by wind. To detect which kind of colonization might be stronger at different spatial scales, we designed a spatially nested sampling experiment at three hierarchical levels 1 single sample, 2 10 communities inside each pool, 3 complete section of 10 pools. Assessing species richness and species similarity of communities, and coherence and nestedness of bdelloid meta communities, we found that different forces may drive species composition at different spatial scales at the largest scale, colonization of propagules may over ride direct dispersal between pools, while at the scale of the single pool, differential movements of species give a nested structure to the meta communities. The number of species increased as the level of analysis increased, even though this study was carried out along only a small stream section. 542 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 diego.fontaneto FONTANETO DIEGO |