adaptation, ecology

A species of water flea in northern Belgium that helps keep algae in check is growing smaller and less abundant in urbanized areas. 

In an unusual evolutionary twist, local stick spiders have come up with an almost identical repertoire of color morphs in multiple locations.

Guppies transplanted between different communities in Trinidadian streams evolved in response to changes in predation threat in just a few generations.

Two genome-wide studies, backed up by field experiments, identify SNPs that correlate with Arabidopsis fitness in various climates.