Climatic Effects on the Phenology of Geophytes

Abstract

Abstract. Nowadays, the scientific and social significance of the research of climatic effects has become outstanding. In order to be able to predict the ecological effects of the global climate change, it is necessary to study monitoring databases of the past and explore connections. For the case study mentioned in the title, historical weather data series from the Hungarian Meteorological Service and Szaniszló Priszter's monitoring data on the phenology of geophytes have been used. These data describe on which days the observed geophytes budded, were blooming and withered. In our research we have found that the classification of the observed years according to phenological events and the classification of those according to the frequency distribution of meteorological parameters show similar patterns, and the one variable group is suitable for explaining the pattern shown by the other one. Furthermore, our important result is that the dates of all three observed phenophases correlate significantly with the average of the daily temperature fluctuation in the given period. The second most often significant parameter is the number of frosty days, this also seem to be determinant for all phenophases. Usual approaches based on the temperature sum and the average temperature don't seem to be really important in this respect. According to the results of the research, it has turned out that the phenology of geophytes can be well modelled with the linear combination of suitable meteorological parameters

‘Last In–First Out’: seasonal variations of non‐structural carbohydrates, glucose‐6‐phosphate and ATP in tubers of two Arum species

“…Among these, geophytes, which have a dormant bud on an underground storage organ (Raunkiaer ), can be considered an interesting model for understanding plant acclimation (Eppich et al . ). In fact, they completely depend on non‐structural carbohydrate (NSC) reserves that also reflect the climate conditions and phenological life cycle (Chapin et al .…”

Ecological correlates of range shifts of Late Pleistocene mammals

“…The past half-century has produced temperatures higher than anything seen in 1300 years with 11 of the past 12 years between 1995 and 2007 among the 12 warmest on record (IPCC 2007). We are already seeing the effects of these changes on animals and plants in the form of range shifts (Parmesan 1996(Parmesan , 2006Parmesan et al 1999;Walther et al 2002;Parmesan & Yohe 2003;Thomas 2010), phenology changes (Walther et al 2002;Parmesan 2006;Eppich et al 2009;Moe et al 2009;Bauer et al 2010;Kennedy & Crozier 2010;Wipf 2010;Zhang et al 2010), population declines and extinction (Pounds et al 1999;Parmesan & Yohe 2003;Root et al 2003;Thomas et al 2004;Parmesan 2006). Understanding and making reasonable predictions for what will happen to species as climate change continues is an important step in preparing for the impacts.…”

From phenology models to risk indicator analysis

“…Indicators have successfully been applied, amongst others, to field crops, forest and fruit trees, or even for insects and vertebrate animals (Erdélyi, 2009, Erdélyi et al, 2008, Koocheki et al, 2006, Salinger et al, 2005, Eppich et al, 2009. Information on climatic indicators based on historical or climate model estimation output data allows conclusions regarding the suitability of the examined plant or the respective site for growing.…”