聖誕莓警告

節日重播:生物學

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憑藉鮮紅的漿果和翠綠的葉子,聖誕莓插條可能看起來非常喜慶。但外表可能具有欺騙性:用這種植物裝飾大廳很可能弊大於利。“聖誕莓 (Schinus terebinthifolius) 與毒藤和毒橡樹屬於同一植物科(漆樹科),”美國地質調查局 (USGS) 的威廉·格雷格說。“它在葉子、花朵和果實中產生化學物質,會刺激易感人群(通常是不知情的人)的皮膚和呼吸道。” 即使在戶外,聖誕莓(右圖),也稱為巴西胡椒木,也一直在引起麻煩。自從這種蔓生樹木首次從巴西引入佛羅里達州以來的一個世紀裡,它已侵佔了該州南部約 70 萬英畝的土地。在那裡,以及在亞利桑那州、加利福尼亞州和夏威夷州,茂密的聖誕莓灌木叢已經取代了本土植物和動物。事實上,到 20 世紀 80 年代,聖誕莓已獲得了佛羅里達州大沼澤地最嚴重的外來植物威脅這一令人懷疑的稱號。控制這種外來物種的努力仍在繼續。與此同時,美國地質調查局建議不要將其引入您的家中。

Kate Wong is an award-winning science writer and senior editor at 大眾科學 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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