An unexpected branch in the Tree of Life sparked my extraterrestrial musings, but further investigation showed these entities were a bit closer to home.

There is an annual harvest of about 4 million cervids in Europe. The harvest is usually selective and regulated by quotas specific to age, sex or size and depending on management objective, but to plan for selective harvest based on ability to detect wildlife disease is new to Europe.

We pooled data from >13,000 historical fish surveys to demonstrate a regime shift to ecosystem dominance of the small fish three-spined stickleback, that has gradually spread along the western Baltic Sea coast like a 'stickleback wave'.