New research is causing the original keystone species, the ochre sea star Pisaster ochraceus, to lose some of its supposed ecosystem-controlling powers. Photo by Jeff Rotman/Alamy Stock Photo This ...

Don't overwhelm yourself with lofty goals. Keystone habits teach us that just one positive change can make all the difference.

In this Perspective, Garza et al. revisit the keystone concept and discuss its relevance for microbial keystone taxa and functions. For this, they explore the different mechanisms behind keystoneness, ...