The study of climate-driven effects on seed traits such as germination has gained momentum over the past decade as the impact of global warming becomes more apparent on the health and survival of plant diversity. Seed response to warming was evaluated in a suite of short-range endemic species from the biodiverse Greenstone Belt of southern Western Australia. The temperature dimensions for germination in 20 woody perennials were identified using small unreplicated samples over 6 weeks on a temperature gradient plate (constant and fluctuating temperatures between 5 and 40 °C). These data were subsequently modelled against current and forecast (2070) mean monthly minimum and maximum temperatures to illustrate seasonal changes to germination timing and final percentage germination. All but one species attained full germination in at least one cell on the gradient plate. Modelling of the data suggested only minimal changes to percentage germination despite a forecast rise in diurnal temperatures over the next 50 years. Nine species were predicted to experience declines of between <1% and 7%, whilst 11 species were predicted to increase their germination by <1% to 3%. Overall, the speed of germination is predicted to increase but the timing of germination for most species shifts seasonally (both advances and delays) as a result of changing diurnal temperatures. The capacity of this suite of species to cope with warmer temperatures during a critical early life stage shows a degree of adaptation to heterogeneous environments. Predicting the effects of global change on terrestrial plant communities is crucial to managing and conserving plant diversity.

中文翻译：

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来自澳大利亚西部南部绿石带的20种短距离特有植物物种的发芽温度阈值。

在过去的十年中，随着全球变暖对植物多样性的健康和生存的影响越来越明显，研究气候驱动对种子特性（如发芽）的影响的研究势头越来越大。评估了来自澳大利亚西部南部生物多样性绿石带的一组短距离特有物种对种子变暖的反应。在温度梯度板上使用6周内未复制的小样本（恒定温度在5至40°C之间波动），确定了20个木本多年生植物发芽的温度范围。这些数据随后针对当前和预测（2070年）的月平均最低和最高温度建模，以说明发芽时间和最终发芽百分比的季节性变化。除一种外，所有其他物种均在梯度板上的至少一个细胞中完全萌发。数据建模表明，尽管预测未来50年昼夜温度会升高，但发芽百分率变化很小。预计有9个物种的发芽率在<1％到7％之间，而11种物种的发芽率则在<1％到3％之间。总的来说，发芽速度预计会增加，但是由于昼夜温度的变化，大多数物种的发芽时间会季节性变化（提前和延迟）。这套物种在关键的早期生命阶段应对较暖温度的能力显示出对异质环境的适应程度。