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

Content Provider	Springer Nature Link
Author	Kaye, Margot W. Wagner, Rebekah J.
Copyright Year	2014
Abstract	Changing global climate, particularly rising temperatures, has been linked through observations with advanced spring phenology in temperate regions. We experimentally tested if regional climate change predictions of increased temperature and precipitation alter the spring phenology of eastern US tree seedlings. This study reports the results of a 3-year-field experiment designed to study the responses of eastern deciduous tree species planted in a post-harvest environment to a 2 °C increase in temperature and a 20 % increase in precipitation. Species were monitored for timing of germination and leaf out in four treatment combinations (ambient, warmed, irrigated, and warmed + irrigated) on 16 plots located in a recently harvested central Pennsylvania forest. The 2 °C warming advanced day of seed germination by an average of 2 weeks and seedling leaf out by 10 days among all species (both p < 0.001). However, increased precipitation did not result in a significant change in spring phenology. Species responded uniquely to treatments, with germination advancing in three of five species in response to warming and leaf out advancing in six of six species. Southern species projected to expand northward into the study region with rising temperatures did not show responses to warming treatments that would provide them an advantage over current resident species. Timing of germination and leaf out varied among years of the experiment, most likely driven by year-to-year variability in spring temperatures. The climate change experiment highlighted the potential of a moderate 2 °C temperature increase to advance spring phenology of deciduous tree seedlings by up to 2 weeks, with a lack of a phenological response to a 20 % increase in precipitation.
Starting Page	543
Ending Page	554
Page Count	12
File Format	PDF
ISSN	13850237
Journal	Plant Ecology
Volume Number	215
Issue Number	5
e-ISSN	15735052
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-03-23
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Climate change Germination Leaf out Phenology Deciduous Tree Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Plant Science

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