Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Every coin has a back side: Invasion by Limnohabitans planktonicus promotes the maintenance of species diversity in bacterial communities |
| Abstract | One of the earliest challenges for ecologists has been to study the impact of invasive species on microbial communities. Although bacteria are fundamental in biological processes, current knowledge on invasion effects by aquatic nonpathogenic bacteria is still limited. Using pure cultures of diverse planktonic bacteria as model organisms at two different carbon concentration levels, we tested the response of an assembled community to the invasion by Limnohabitans planktonicus, an opportunistic bacterium, successful in freshwaters. The invader, introduced at the early stationary growth phase of the resident community, caused a strong decrement of the abundance of the dominant species. This was due to competition for nutrients and a potential allelopathic interaction. Simultaneously, resident species formerly unable to successfully compete within the community, thus potentially exposed to competitive exclusion, increased their abundances. The overall result of the invasion was preservation of species diversity, the higher the lower was the substrate content available. Our study provides new insights into bacterial invasions, offering an alternative interpretation of invasions for community ecology. |
| Source | PloS one 7 (12), pp. e51576 |
| Keywords | Biological invasionTheoretical ecologyMicrobial ecology |
| Journal | PloS one |
| Editor | Public Library of Science, San Francisco, CA, Stati Uniti d'America |
| Year | 2012 |
| Type | Articolo in rivista |
| DOI | 10.1371/journal.pone.0051576 |
| Authors | Karel Hornak; Gianluca Corno |
| Text | 328122 2012 10.1371/journal.pone.0051576 ISI Web of Science WOS 000313236200138 Scopus 2 s2.0 84871209469 Biological invasion Theoretical ecology Microbial ecology Every coin has a back side Invasion by Limnohabitans planktonicus promotes the maintenance of species diversity in bacterial communities Karel Hornak; Gianluca Corno Czech Academy of Sciences; University of Zurich; Consiglio Nazionale delle Ricerche CNR One of the earliest challenges for ecologists has been to study the impact of invasive species on microbial communities. Although bacteria are fundamental in biological processes, current knowledge on invasion effects by aquatic nonpathogenic bacteria is still limited. Using pure cultures of diverse planktonic bacteria as model organisms at two different carbon concentration levels, we tested the response of an assembled community to the invasion by Limnohabitans planktonicus, an opportunistic bacterium, successful in freshwaters. The invader, introduced at the early stationary growth phase of the resident community, caused a strong decrement of the abundance of the dominant species. This was due to competition for nutrients and a potential allelopathic interaction. Simultaneously, resident species formerly unable to successfully compete within the community, thus potentially exposed to competitive exclusion, increased their abundances. The overall result of the invasion was preservation of species diversity, the higher the lower was the substrate content available. Our study provides new insights into bacterial invasions, offering an alternative interpretation of invasions for community ecology. 7 Published version Articolo 2012_PLOS_ONE_7_12_e51576.pdf Articolo in rivista Public Library of Science 1932 6203 PloS one PloS one PLoS ONE PloS one Public Library of Science one PLoS 1 gianluca.corno CORNO GIANLUCA TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |