Herbarium Specimens May Provide Biased Flowering Phenology Estimates for Dioecious Species
Herbarium Specimens May Provide Biased Flowering Phenology Estimates for Dioecious Species
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植物标本可能为雌雄异株物种提供有偏差的开花物候学估计
DOI：
10.1086/722294
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发表时间：
2022
影响因子：
2.3
通讯作者：
Lee, Benjamin R.
中科院分区：
文献类型：
--
作者：
Yang, Yong;Heberling, J. Mason;Primack, Richard B.;Lee, Benjamin R.
从植物标本中测量物候已经成为一种广泛使用的、强有力的方法，用于研究气候变化对植物在空间、时间和生育过程中的影响。然而，目前尚不清楚植物采集中的偏见是否以及如何影响结论，特别是对于雌雄异株的物种。方法学。我们使用1918年至2018年收集的88个植物标本和数字化照片，研究了春季温度和纬度对东亚各地雄性和雌性钝叶香树（Lindera obtusilobaBlume）开花物候的影响。 然而，令人惊讶的是，雌性开花植物的收集平均比雄性植物晚25天。这种差异可能是由于男性植物被优先收集在开花季节（与艳丽，但更短暂的花）和女性植物被收集后，开花高峰期（与nonreceptive花持续到本赛季后期）。 植物标本收集者和摄影师应该对雄性和雌性植物都取样。
Premise of research. Measuring phenology from herbarium specimens has become a widely used, powerful method for investigating the effects of climate change on plants across space, time, and phylogeny. However, it is not known whether and how biases in plant collecting might affect conclusions, particularly for dioecious species.Methodology. We examined the effects of spring temperature and latitude on the flowering phenology of male and female blunt-lobed spicebush (Lindera obtusilobaBlume) plants from across East Asia using 88 herbarium specimens and digitized photographs collected from 1918 to 2018.Pivotal results. Temperature and latitude did not affect the flowering phenology of either sex when analyzed separately. Surprisingly, however, female flowering plants were collected on average 25 d later than male plants. This difference is likely due to male plants being preferentially collected during the flowering season (with showy but more ephemeral flowers) and female plants being collected after the peak flowering season (with nonreceptive flowers persisting later into the season).Conclusions. Researchers investigating phenology using herbarium specimens need to be aware of possible collecting bias in dioecious species and species with persistent flowers. Herbarium collectors and photographers should sample both male and female plants.
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影响因子：
3.6
作者：
Ellwood, Elizabeth R.;Primack, Richard B.;HilleRisLambers, Janneke
通讯作者：
HilleRisLambers, Janneke
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影响因子：
1.9
作者：
Anne;J. Olesen
通讯作者：
J. Olesen
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DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
Yong Yang
通讯作者：
Yong Yang
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影响因子：
3
作者：
R. Niesenbaum
通讯作者：
R. Niesenbaum
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DOI：
--
发表时间：
1999
期刊：
影响因子：
--
作者：
Y. Dupont;Makoto Kato
通讯作者：
Makoto Kato