The germination strategies of widespread annual plants are unrelated to regional climate
The germination strategies of widespread annual plants are unrelated to regional climate
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DOI：
10.1111/geb.12219
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发表时间：
2014-12
影响因子：
6.4
通讯作者：
M. Mayfield;J. Dwyer;A. Main;J. Levine
中科院分区：
文献类型：
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作者：
M. Mayfield;J. Dwyer;A. Main;J. Levine
目的环境提示的发芽和种子库是一年生植物在不可预测的气候中生存所采用的策略。此外，此类策略可能是在更加极端和多变的未来气候下持续存在的关键。在地中海气候地区，冷催芽可以使种群避免在不利条件下发芽，种子库可以在面临年际气候变化时缓冲种群增长。利用加州植物区系 (CFP) 广泛分布的本地一年生植物物种，我们提出以下问题：(1) 冷催发芽和持久种子库有多常见？ (2) 冷提示发芽和种子库维护的流行是否会随着气候的变化而发生可预测的变化？ (3) 萌发策略在分类学上有联系吗？
AimEnvironmentally cued germination and seed banking are strategies employed by annual plants to persist in unpredictable climates. Moreover, such strategies may be key to persistence under more extreme and variable future climates. In regions with a mediterranean climate, cold-cued germination can allow populations to avoid germinating under unfavourable conditions and seed banks can buffer population growth in the face of inter-annual climate variability. Using widespread native annual plant species in the California Floristic Province (CFP), we ask: (1) How common are cold-cued germination and persistent seed banks? (2) Does the prevalence of cold-cued germination and seed bank maintenance shift predictably with climate? (3) Are germination strategies taxonomically linked?