レオナルド・ディカプリオのインスタグラム(leonardodicaprio) - 5月26日 00時40分

#Regram #RG @everydayclimatechange:
Monarch butterflies migrate annually from Mexico and California to the northern US and Canada. Multiple facets of climate change are contributing to the variation in migratory patterns and population size. Global warming adversely affects monarchs’ reproductive cycles and development at all stages of life, and delays the butterflies’ natural instincts to make moves. Coupled with increased storms, rain, and high winds, the migration is greatly disrupted.
This great journey is further impeded by the declining availability of the monarch’s main food source and breeding place: milkweed. Increasing temperatures and periods of drought are making it harder for this plant to grow. Illegal logging and land-use changes are limiting the space where it can flourish. Farmers' use of herbicide-resistant varieties of crops allows for more liberal spraying of herbicides and pesticides. This helps control weeds in their fields but also depletes the natural habitat for butterflies.
Monarchs pollinate plants, like milkweed, and allow them to flourish. Without these pollinators the natural food web and human food systems are damaged. This unique migratory process is not only a spectacular sight, but has far-reaching effects on larger ecosystems.
#everydayclimatechange #monarchbutterfly #mexico #biosphere #Michoacan #mariposa #ReservadelaBiosferadelaMariposaMonarca #SantuarioElRosario

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