期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 278, 期 1703, 页码 247-255出版社
ROYAL SOC
DOI: 10.1098/rspb.2010.1173
关键词
adaptation; competition; carbon dioxide; Chlamydomonas; Price equation; community productivity
资金
- NERC
- Natural Environment Research Council [NE/E013066/1] Funding Source: researchfish
- NERC [NE/E013066/1] Funding Source: UKRI
When competitive exclusion between lineages and genetic adaptation within lineages occur on the same timescale, the two processes have the potential to interact. I use experimental microbial evolution where strains of a photosynthetic microbe that differ in their physiological response to CO2 enrichment are grown either alone or in communities for hundreds of generations under CO2 enrichment. After about 300 generations of growth, strains that experienced competition while adapting to environmental change are both less productive and less fit than corresponding strains that adapted to that same environmental change in the absence of competitors. In addition, I find that excluding competitors not only limits that strain's adaptive response to abiotic change, but also decreases community productivity; I quantify this effect using the Price equation. Finally, these data allow me to empirically test the common hypothesis that phytoplankton that are most able to take advantage of carbon enrichment in single-strain populations over the short term will increase in frequency within multi-strain communities over longer timescales.
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