Monarch butterfly trends are sensitive to unexamined changes in museum collections over time
Monarch butterfly trends are sensitive to unexamined changes in museum collections over time
复制标题
帝王蝶的趋势对博物馆藏品随时间的未经审查的变化很敏感
DOI：
10.1073/pnas.1903511116
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Tyson Wepprich
中科院分区：
文献类型：
--
作者：
Tyson Wepprich
博物馆记录可以记录物候、物种互动和特征进化的长期变化(1)。然而，这些数据在采样时存在空间和时间偏差，这可能会限制它们用于跟踪丰度(2)。通常，博物馆记录是唯一可用的历史数据，在PNAS中，Boyle等人。(3)对北美帝王蝶(Danaus Plexippus)及其寄主乳草(Asclepias spp.)东部种群进行长期丰度估算。从1900年到2016年，分别使用了1191条和31510条记录。他们的结论是，君子植物和马利筋的丰度在20世纪中叶开始下降，那时抗除草剂作物还没有被采用，这种作物往往被指责为君子植物寄主植物的损失(4)。使用同样的数据，我认为君主趋势对标准化方法很敏感，似乎没有乳草趋势那么强劲。
博伊尔等人。(3)认识到…
[↵][1]1电子邮件：tyson.wepprich{at}oregonstate.edu。
[1]：#xref-corresp-1-1
Museum records can document long-term changes in phenology, species interactions, and trait evolution (1). However, these data have spatial and temporal biases in sampling which may limit their use for tracking abundance (2). Often, museum records are the only historical data available, and in PNAS, Boyle et al. (3) make long-term abundance estimates for the eastern population of the North American monarch butterfly ( Danaus plexippus ) and its milkweed host plant ( Asclepias spp.) using 1,191 and 31,510 records, respectively, from 1900 to 2016. They conclude that monarch and milkweed abundance started to decline in the mid-20th century, before the adoption of herbicide-resistant crops that are often blamed for losses of monarch host plants (4). Using the same data, I argue that the monarch trend is sensitive to the method of standardization and appears less robust than the milkweed trend.
Boyle et al. (3) recognize that …
[↵][1]1Email: tyson.wepprich{at}oregonstate.edu.
[1]: #xref-corresp-1-1