Catkins are flowering at different times as climate changes – threatening their pollination and the wildlife that feed on them
Depending on the species and the year’s environmental conditions, catkins dance to their own beat.
- Depending on the species and the year’s environmental conditions, catkins dance to their own beat.
- Hazels might kick off the floral festivities between January and March, while oaks take their turn between mid-April and May.
- Climate change is distorting nature’s calendar, causing plants to flower early and animals to emerge at the wrong time.
- Changing temperatures could result in a split in the timing of their development with male and female catkins blooming at different times.
- Changes in rainfall, whether it’s a drought or a sudden downpour, can throw things off-kilter, affecting the production and flowering success of catkins.
Symbols of springtime
- You’ve probably spotted them as the first signs of spring, adorning trees with their unique charm.
- These little beauties are essential players in the life cycle of many trees found in the cooler regions of the world.
- Trees like alder, silver birch, hazel, oak and white willow are the stars of the catkin show.
- Birch pollen, for instance, can range from a thousand to ten thousand grains per cubic metre, making it an airborne irritant.
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Sven Batke does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.