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Responses to light in individual growth and reproduction of two Acer species and the long-term consequences

机译:两种Acer物种在个体生长和繁殖中对光的反应以及长期后果

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Despite widespread interest in plant responses to light, few studies have addressed the lifetime consequences of the responses. We have addressed this issue by studying Acer mono and Acer amoenum trees in a cool temperate forest in northern Japan. By analyzing field data, it was detected that growth and flowering rates increased with light availability for each species. A stochastic individual-based model consisting of growth, flowering, and survival processes was used to estimate lifetime reproductive outputs under three treatments of light conditions. These analyses indicated that A. mono had high variation in lifetime reproductive output under different light conditions, and that the variation was mainly caused by the growth response and not by the flowering response. In contrast, A. amoenum showed stable lifetime reproductive outputs across all light conditions. Our results demonstrated that responses detected by data analyses do not always lead to changes in lifetime reproductive output. This result highlights the importance of lifetime integration for the evaluation of the long-term impact of performance responses. These results also revealed some of the ways in which individuals of the two Acer species may contribute to overall population regulation.
机译:尽管人们对植物对光的反应产生了广泛的兴趣,但很少有研究涉及这种反应对生命的影响。我们通过研究日本北部凉爽的温带森林中的Acer mono和Acer amoenum树解决了这个问题。通过分析田间数据,发现每种物种的生长和开花率随光的可用性而增加。由生长,开花和存活过程组成的基于个体的随机模型用于估计在光照条件下的三种处理下的终生生殖输出。这些分析表明,在不同的光照条件下,单孢曲霉的终生生殖输出具有很大的变化,并且该变化主要是由生长响应而不是由开花响应引起的。相反,A。amoenum在所有光照条件下均显示稳定的终生繁殖输出。我们的结果表明,通过数据分析检测到的反应并不总是导致终生生殖输出的变化。该结果突出了生命周期集成对于评估绩效响应的长期影响的重要性。这些结果还揭示了两种宏cer物种的个体可能对总体种群调控做出贡献的方式。

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