'Lendület' Seed Ecology Research Group, Institute of Ecology and Botany, HUN-REN Centre for Ecological Research, Vácrátót, Hungary.
National Laboratory for Health Security, HUN-REN Centre for Ecological Research, Budapest, Hungary.
Sci Rep. 2024 Oct 29;14(1):25974. doi: 10.1038/s41598-024-76942-5.
Due to their complex life cycles geophytes are often neglected in conservation programs, despite they are important elements of early spring communities. Their life cycle is strongly affected by weather parameters, i.e. temperature, precipitation, and light, but the effects of these parameters are often contradictory and show high intra-annual variability even within species. Deeper knowledge about the abiotic factors affecting the population dynamics of geophytes is needed to support the designation of effective conservation plans. We aimed to explore the link between weather parameters and population dynamics of Colchicum bulbocodium, an endangered and strictly protected geophyte. We monitored three life cycle stages (flowering, growing, fruiting) of 1069 individuals in permanent plots for six consecutive years. Our results showed that life cycle of C. bulbocodium was strongly related to the actual weather parameters; the lagged effect of the previous year was weaker. Increasing temperature and lack of cold periods had negative effect on all life stages. We highlighted that population estimation based on the number of flowering individuals in a single year can underestimate population size by 40-83%. Monitoring in years following wet and cold springs and cold winters could increase the accuracy of population estimations of the flowering individuals.
由于其复杂的生命周期，尽管球茎植物是早春群落的重要组成部分，但它们常常在保护计划中被忽视。它们的生命周期受到气象参数的强烈影响，如温度、降水和光照，但这些参数的影响往往是矛盾的，即使在同一物种内也表现出高度的年内可变性。为了支持制定有效的保护计划，需要更深入地了解影响球茎植物种群动态的非生物因素。我们旨在探讨气象参数与濒危且受严格保护的球茎植物毛茛科獐耳细辛种群动态之间的联系。我们在六年的时间里，对 1069 个个体的三个生命周期阶段（开花、生长、结果）进行了监测。我们的研究结果表明，獐耳细辛的生命周期与实际气象参数密切相关，前一年的滞后效应较弱。温度升高和缺乏寒冷期对所有生命周期阶段都有负面影响。我们强调，仅基于一年中开花个体数量进行的种群估计可能会低估种群规模 40-83%。监测多雨、寒冷的春季和寒冷的冬季之后的年份，可以提高对开花个体的种群估计的准确性。
