Which factor is a major concern for bees due to climate change?

The major concern for bees due to climate change is the decrease in nectar availability. Climate change significantly alters weather patterns, affecting flowering times and the overall health of flowering plants. As temperatures rise and precipitation patterns change, the seasonal availability of nectar and pollen can become inconsistent, leading to food shortages for bees.

Bees rely heavily on a diverse and abundant supply of nectar, which is critical not only for their survival but also for colony health and productivity. A decline in the availability of suitable flowers means less nectar for bees to collect, which can weaken colonies or even result in their collapse. This issue is exacerbated by habitat loss and the decline of wildflowers, which are essential food sources for many bee species.

While the other factors mentioned are relevant to the broader context of beekeeping and environmental impact, they do not directly address the immediate challenge posed to bees by climate change as significantly as the decrease in nectar availability.