| Title | Time-variant species pools shape competitive dynamics and biodiversity - ecosystem function relationships |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Armitage D.W |
| Journal | Proceedings of the Royal Society B-Biological Sciences |
| Volume | 283 |
| Pagination | 8 |
| Date Published | Sep |
| Type of Article | Article |
| ISBN Number | 0962-8452 |
| Accession Number | WOS:000386195400010 |
| Keywords | Bacteria, biodiversity-ecosystem function, biomass, coexistence, community productivity, competition, CURRENT KNOWLEDGE, diversity, ecology, Environmental Sciences &, Evolutionary Biology, Life Sciences & Biomedicine - Other Topics, pitcher plant, plant, Richness, selection, STABILITY, succession, time |
| Abstract | Biodiversity-ecosystem function (BEF) experiments routinely employ common garden designs, drawing samples from a local biota. The communities from which taxa are sampled may not, however, be at equilibrium. To test for temporal changes in BEF relationships, I assembled the pools of aquatic bacterial strains isolated at different time points from leaves on the pitcher plant Darlingtonia californica in order to evaluate the strength, direction and drivers of the BEF relationship across a natural host-associated successional gradient. I constructed experimental communities using bacterial isolates from each time point and measured their respiration rates and competitive interactions. Communities assembled from mid-successional species pools showed the strongest positive relationships between community richness and respiration rates, driven primarily by linear additivity among isolates. Diffuse competition was common among all communities but greatest within mid-successional isolates. These results demonstrate the dependence of the BEF relationship on the temporal dynamics of the local species pool, implying that ecosystems may respond differently to the addition or removal of taxa at different points in time during succession.
|
| Short Title | Proc. R. Soc. B-Biol. Sci.Proc. R. Soc. B-Biol. Sci. |
| Alternate Journal | Proc. R. Soc. B-Biol. Sci. |
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Armitage, David W.
Nsf [deb-1406524]; nsf
Funding was provided by NSF DEB-1406524 and an NSF graduate research fellowship.
11
Royal soc
London
1471-2954
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Armitage, DW (reprint author), Univ Calif Berkeley, Dept Integrat Biol, 3040 Valley Life Sci Bldg, Berkeley, CA 94720 USA.; Armitage, DW (reprint author), Univ Notre Dame, Dept Biol Sci, Galvin Life Sci Ctr 100, Notre Dame, IN 46556 USA.
dave.armitage@gmail.com
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