The COVID-19 pandemic presented scientists with a unique opportunity to study the effects of an ‘anthropause’: an abrupt reduction of, and/or alteration in, human activities.

How can we tell if climate change really affects the population dynamics of a species? "Changes to behaviour, weight or appearance don't always mean population numbers are de- or increasing." NIOO-researcher Martijn van de Pol presents a novel approach to answering the question in the June issue of Ecology Letters.