Climate change could threaten monarch mass migration

Ботанчик
Suitable habitat in Mexico may shift south, fracturing existing migration routes ⏸ Monarch butterflies (Danus plexippus) rest on rocks in Mexico’s Biosphere Reserve of the Monarch Butterfly, a protected area where millions of the insects spend the winter before migrating north in the spring. AmericanWildlife/Getty Images Climate change may threaten North America’s iconic mass monarch butterfly migration.  Every fall, millions of monarchs (Danaus plexippus) travel thousands of kilometers over North America as they leave their breeding grounds in Canada and the United States for wintering grounds in a mountainous part of central Mexico. The butterflies make the trek back north over multiple generations when temperatures warm in the spring and summer months, following the growth of milkweed (Asclepias), their preferred food source. But Mexico’s suitable monarch overwintering habitat could shift south as the climate changes in decades to come, researchers report February 25 in PLOS Climate. That could length
Новости
источник