Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Coaggregation in a microbial predator-prey system affects competition and trophic transfer efficiency |
| Abstract | Emerging interactions are key determinants of system productivity and efficiency in plant and animal communities, whereas their importance for planktonic microbial assemblages is unknown. We studied the relationship between two aquatic bacterial strains and a protistan predator with respect to cooperation and system efficiency. While competitive exclusion of one bacterial strain was observed in grazer-free cocultures, the presence of the predator induced the formation of large coaggregates and allowed a coexistence of both strains. The aggregates moreover provided a substrate for attachment of the predators. The interactions in the more complex community, i.e., microbial flocs composed by both bacterial strains and predators, led to a significantly increased transfer efficiency of dissolved organic matter to the higher trophic level than in systems with two species only. Similar emerging interactions might also play a role in complex microbial assemblages in natural aquatic systems, i.e., on suspended organic aggregates. |
| Source | Ecology (Brooklyn, New York, N.Y. : Online) 94 (4), pp. 870–881 |
| Keywords | Arthrobacter agilisBrevundimonascommunity ecologycooperationmicrobial coaggregationPoterioochromonasprey-predator interactionssystem efficiency |
| Journal | Ecology (Brooklyn, New York, N.Y. : Online) |
| Editor | Brooklyn Botanic Garden,, Brooklyn, N.Y., Stati Uniti d'America |
| Year | 2013 |
| Type | Articolo in rivista |
| DOI | 10.5038/1827-806X.42.3.2 |
| Authors | Gianluca Corno; Joerg Villiger; Jakob Pernthaler |
| Text | 312594 2013 10.5038/1827 806X.42.3.2 ISI Web of Science WOS 000317964900012 Scopus 2 s2.0 84876760716 Arthrobacter agilis Brevundimonas community ecology cooperation microbial coaggregation Poterioochromonas prey predator interactions system efficiency Coaggregation in a microbial predator prey system affects competition and trophic transfer efficiency Gianluca Corno; Joerg Villiger; Jakob Pernthaler Joerg Villiger, Jakob Pernthaler University of Zurich; Gianluca Corno CNR Inst Ecosyst Study Emerging interactions are key determinants of system productivity and efficiency in plant and animal communities, whereas their importance for planktonic microbial assemblages is unknown. We studied the relationship between two aquatic bacterial strains and a protistan predator with respect to cooperation and system efficiency. While competitive exclusion of one bacterial strain was observed in grazer free cocultures, the presence of the predator induced the formation of large coaggregates and allowed a coexistence of both strains. The aggregates moreover provided a substrate for attachment of the predators. The interactions in the more complex community, i.e., microbial flocs composed by both bacterial strains and predators, led to a significantly increased transfer efficiency of dissolved organic matter to the higher trophic level than in systems with two species only. Similar emerging interactions might also play a role in complex microbial assemblages in natural aquatic systems, i.e., on suspended organic aggregates. 94 Published version Articolo 2013_Ecology_94_4_870_881.pdf Articolo in rivista Brooklyn Botanic Garden, 1939 9170 Ecology Brooklyn, New York, N.Y. Online Ecology Brooklyn, New York, N.Y. Online Ecol. Brooklyn, New York, N.Y. Online Ecology Brooklyn, New York, N.Y. Online gianluca.corno CORNO GIANLUCA TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |