When flowers “turn up early” but insects don’t: what can happen?
When flowers “turn up early” but insects don’t: what can happen? As the climate warms, many plants are shifting their flowering dates earlier (and in some places, weirder — earlier or later). In the UK, large datasets show first-flowering dates have moved markedly earlier under recent warming. But insects (and other pollinators) don’t always shift at the same speed, because their life cycles can depend on different cues (temperature vs day length, winter chilling, rainfall patterns, etc.). That creates a phenological mismatch : flowers open when the right pollinators aren’t yet active. Here are the main knock-on effects of that mismatch: 1) Less pollination → fewer seeds and fruits If fewer pollinators are flying when flowers are ready, plants can suffer pollen limitation (not enough pollen delivered). That can mean fewer seeds, fewer berries, fewer apples — and weaker plant reproduction over time. 2) Hungry pollinators (and weaker colonies) Flip the timing around and i...