Intraspecific variation in spring leaf phenology and duration of leaf expansion in relation to leaf habit and leaf size
- PDF / 539,100 Bytes
- 12 Pages / 547.087 x 737.008 pts Page_size
- 58 Downloads / 190 Views
(0123456789().,-volV) ( 01234567 89().,-volV)
Intraspecific variation in spring leaf phenology and duration of leaf expansion in relation to leaf habit and leaf size of temperate tree species Noriyuki Osada
Received: 18 December 2019 / Accepted: 26 June 2020 Ó Springer Nature B.V. 2020
Abstract Spring leaf phenology has been intensively studied in temperate deciduous broad-leaved tree species, but the phenology of evergreen broadleaved tree species has seldom been focused on. Evaluation of the difference in spring leaf phenology between coexisting deciduous and evergreen species is essential to predict their responses to climate change. In this study, spring leaf phenology was investigated for the 12 deciduous and 12 evergreen broad-leaved species coexisting in a warm-temperate forest in Japan, based on the predictions that selection pressure for earlier leaf production in spring results in less intraspecific variation in phenology at a given timing (SDmax) and a shorter duration of leaf expansion in deciduous than in evergreen species. In contrast to this prediction, SDmax did not differ between deciduous and evergreen species and was not related to leaf area or LMA. On the other hand, the duration of leaf expansion was longer in evergreen than in deciduous species, and was positively correlated with LMA. The
Communicated by Lesley Rigg.
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11258-020-01052-x) contains supplementary material, which is available to authorized users. N. Osada (&) Laboratory of Plant Conservation Science, Faculty of Agriculture, Meijo University, Nagoya 468-8502, Japan e-mail: [email protected]
leaves of greater LMA required longer periods of leaf expansion, probably due to a higher cost of and/or more conservative leaf development in the face of herbivory. As a consequence, the timing of full leaf expansion was delayed not only by later budburst (approximately two weeks) but also by a longer duration of leaf expansion (approximately two weeks) in evergreen than in deciduous broad-leaved species, which would probably influence the productivity of newly emerging leaves in spring. Keywords Deciduous species Evergreen species Full leaf expansion Leaf habit Leaf mass per area Leaf size
Introduction Spring leaf phenology, such as the timings of budburst, leaf-out, and leaves unfolded, has been intensively studied in temperate woody species in relation to global climate change (Ko¨rner and Basler 2010). Many studies have revealed that spring leaf phenology of temperate trees has been advanced in response to warming in recent years (Menzel et al. 2006; Parmesan 2006; Parmesan and Yohe 2003; Root et al. 2003). Spring leaf phenology is considered to be regulated by the contrasting selection pressures for earlier budburst to increase the growth period and later
123
Plant Ecol
budburst to reduce frost damage in temperate trees. Notably, the phenological response to warming differs among species due to different physiological mecha
Data Loading...
