Stoichiometric constraints modulate temperature and nutrient effects on biomass distribution and community stability

Oikos ◽  
2021 ◽  
Author(s):  
Arnaud Sentis ◽  
Bart Haegeman ◽  
José M. Montoya
Keyword(s):  
Community Stability ◽  
Biomass Distribution ◽  
Nutrient Effects

Top-down effects on the size-biomass distribution of a freshwater bacterioplankton community

1996 ◽  
Vol 10 ◽  
pp. 255-263 ◽  
Author(s):  
J Pernthaler ◽  
B Sattler ◽  
K Simek ◽  
A Schwarzenbacher ◽  
R Psenner
Keyword(s):  
Biomass Distribution ◽  
Top Down ◽  
Bacterioplankton Community

Biomass distribution, maturity acceleration and yield in drought-stressed common bean cultivars

2004 ◽  
Vol 85 (2-3) ◽  
pp. 203-211 ◽  
Author(s):  
Rigoberto Rosales-Serna ◽  
Josué Kohashi-Shibata ◽  
Jorge Alberto Acosta-Gallegos ◽  
Carlos Trejo-López ◽  
Joaquı́n Ortiz-Cereceres ◽  
...  
Keyword(s):  
Common Bean ◽  
Biomass Distribution

scholarly journals Substrate-dependent competition and cooperation relationships between Geobacter and Dehalococcoides for their organohalide respiration

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Yongyi Liang ◽  
Qihong Lu ◽  
Zhiwei Liang ◽  
Xiaokun Liu ◽  
Wenwen Fang ◽  
...  
Keyword(s):  
Electron Donors ◽  
Community Stability ◽  
Organohalide Respiration ◽  
Competition And Cooperation ◽  
Free Competition ◽  
Isolation And Characterization ◽  
Geochemical Cycling ◽  
New Strategy ◽  
Insight Into

AbstractObligate and non-obligate organohalide-respiring bacteria (OHRB) play central roles in the geochemical cycling and environmental bioremediation of organohalides. Their coexistence and interactions may provide functional redundancy and community stability to assure organohalide respiration efficiency but, at the same time, complicate isolation and characterization of specific OHRB. Here, we employed a growth rate/yield tradeoff strategy to enrich and isolate a rare non-obligate tetrachloroethene (PCE)-respiring Geobacter from a Dehalococcoides-predominant microcosm, providing experimental evidence for the rate/yield tradeoff theory in population selection. Surprisingly, further physiological and genomic characterizations, together with co-culture experiments, revealed three unique interactions (i.e., free competition, conditional competition and syntrophic cooperation) between Geobacter and Dehalococcoides for their respiration of PCE and polychlorinated biphenyls (PCBs), depending on both the feeding electron donors (acetate/H2 vs. propionate) and electron acceptors (PCE vs. PCBs). This study provides the first insight into substrate-dependent interactions between obligate and non-obligate OHRB, as well as a new strategy to isolate fastidious microorganisms, for better understanding of the geochemical cycling and bioremediation of organohalides.

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