Correlated seed failure as an environmental veto to synchronize reproduction of masting plants
Correlated seed failure as an environmental veto to synchronize reproduction of masting plants
复制标题
相关种子失败作为环境否决以同步肥大植物的繁殖
DOI：
10.1101/171579
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
E. Crone
中科院分区：
文献类型：
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作者：
Michał Bogdziewicz;M. Steele;Shealyn Marino;E. Crone
高度可变、同步的种子生产，称为肥育，是植物中广泛使用的繁殖策略。资源动态、授粉成功以及如本文所述的环境否决可能是肥育的近似机制。我们扩展了具有相关和不相关繁殖失败的肥大资源预算模型，并在其参数空间中运行该模型。接下来，我们根据红橡树 (Quercus rubra) 和白橡树 (Q. alba) 16 年的种子生产数据对模型进行了参数化。模拟表明，即使在没有花粉耦合的情况下，资源动态和繁殖失败也会产生肥大。一致的是，在这两个物种中，资源增益的年际变化和相关的繁殖失败对于产生肥大是必要且充分的。环境变异是由环境否决引起的繁殖失败的一种形式，它可以驱动大规模同步，而无需依赖于密度的花粉限制。抑制繁殖的天气事件在生态系统中普遍存在，这表明这些描述的机制可能在许多桅杆系统中发挥作用。
Highly variable, synchronized seed production, called masting, is a widespread reproductive strategy in plants. Resource dynamics, pollination success, and, as described here, environmental veto, are possible proximate mechanisms of masting. We extended the resource budget model of masting with correlated and uncorrelated reproductive failure, and ran this model across its parameters space. Next, we parametrized the model based on a 16-year seed production data for red (Quercus rubra) and white (Q. alba) oaks. Simulations showed that resource dynamics and reproduction failure produce masting even in the absence of pollen coupling. In concordance, in both species, among-year variation in resource gain and correlated reproductive failure were necessary and sufficient to produce masting. Environmental variation is a form of reproduction failure caused by environmental veto that may drive large-scale synchronization without density-dependent pollen limitation. Reproductive-inhibiting weather events are prevalent in ecosystems, suggesting that these described mechanisms likely operate in many masting systems.