Eastern deciduous tree seedlings advance spring phenology in response to experimental warming, but not wetting, treatments

Responses of two understory herbs, Maianthemum canadense and Eurybia macrophylla, to experimental forest warming: Early emergence is the key to enhanced reproductive output

“…However, the saplings of woody species planted in the plots were heated. These saplings also advanced their phenology in response to warming (Schwartzberg et al, 2014; and data not published, B4WarmED) as reported in other studies (Fu et al, 2014; Kaye and Wagner, 2014). While herbaceous species rely more strictly on the temperature and snow melt as a signal for emerging (Farnsworth et al, 1995; Iversen et al, 2009; De Frenne et al, 2011; Cornelius et al, 2013), the response of trees to temperature is more complex and varies among species because of different sensitivities to temperature, photoperiod, and winter chilling (Murray et al, 1989; Borchert et al, 2005; Vitasse et al, 2009; Körner and Basler, 2010).…”

Age‐mediation of tree‐growth responses to experimental warming in the northeastern Tibetan Plateau

“…Experimental warming of approximately 1.0°C generally advanced the average timing of spring phenology and delayed the cessation dates of shoot growth in Qinghai spruce saplings growing at the low-elevation treeline. The observed shifts in spring phenology in response to warming confirm the results of previous studies that indicated trends toward an earlier start of vegetative growth with an increase in temperature (Bronson et al, 2009;Dorji et al, 2013;Gunderson et al, 2012;Kaye & Wagner, 2014;Morin, Roy, Sonié, & Chuine, 2010;Prieto et al, 2009). However, the magnitude of plant response to artificial warming is prone to mismatch, generally less than, those of natural variation based on long-term records.…”

“…Current efforts to assess potential effects of climate change on species often include manipulation experiments (Rollinson & Kaye, 2012). A considerable number of field-based warming studies involved a single plant or a small population, while warming at ecosystem level has been scarce, especially with different aged plants (Bronson, Gower, Tanner, & Van Herk, 2009;Danby & Hik, 2007;Fu, Campioli, Deckmyn, & Janssens, 2013;Kaye & Wagner, 2014;Xu et al, 2012). Seedlings and saplings in natural regenerated forests often display aggregate rather than uniform distribution before self-thinning (He, Zhao, Liu, & Zhang, 2010), thereby warming in natural juvenile populations may be necessary at ecosystem level.…”

Effects of experimental warming on soil respiration and biomass in Quercus variabilis Blume and Pinus densiflora Sieb. et Zucc. seedlings

“…To understand possible changes in the eco-physiological traits and biogeochemical properties of forest ecosystems, a growing number of warming manipulation studies have been conducted using tree seedlings Fisichelli et al 2014). Previous warming studies have suggested that elevated temperatures stimulate tree growth and photosynthesis, and extend the growing season of coniferous (Xu et al 2012;Yin et al 2008) and deciduous tree seedlings (e.g., Danyagri and Dang 2014;Kaye and Wagner 2014;Morin et al 2010). However, the magnitude of these warming effects may differ according to plant functional group and biome (Lin et al 2010;Way and Oren 2010).…”