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By integrating time series analyses of transcripts, lipids and metabolites, the authors show that microorganisms in the open ocean partition scarce resources temporally, with different microbial groups expressing nitrogen uptake and assimilation processes at different points throughout the diel cycle.
Using 32 ecological networks (host–parasite, plant–pollinator, plant–herbivore and other food webs), the authors show that several network properties scale with the size of the sampling area, suggesting a new type of biodiversity–area relationship.
The extent to which excess carbon dioxide causes a ‘fertilization effect’ varies across biomes and as a function of water supply, finds a study examining data from 14 CO2 experimental sites.
The evolutionary relationship between mitochondria and their closest bacterial relatives remains uncertain. Applying a new model of protein evolution to an extended dataset, the authors reconstruct the phylogenetic position of the mitochondria as sister to the Alphaproteobacteria.