Overwintering of Vaccinium vitis-idaea in two sub-Arctic microhabitats: a reciprocal transplantation experiment

Polar research

Robin Lundell¹  Timo Saarinen² 

[1] Department of Biosciences, FI-00014 University of Helsinki, PO Box 65, Helsinki, Finland;Department of Biosciences, FI-00014 University of Helsinki, PO Box 65, Helsinki, FinlandCorrespondence

关键词: Chlorophyll fluorescence;    electrolyte leakage;    overwintering;    photosynthesis and respiration;    reciprocal transplantation;    Vaccinium vitis-idaea.;   

DOI  :  10.1111/j.1751-8369.2010.00152.x

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

Northern plants have to cope with a wide range of overwintering conditions, as the depth and physical properties of snow show high spatial variation in the Arctic. The overwintering of lingonberry (Vaccinium vitis-idaea) was studied in a reciprocal transplantation experiment between two sub-Arctic microhabitats in northern Finland. The experiment was set up in the autumn, and physiological traits related to overwintering were measured at the time of snowmelt in the following spring. The origin of the plants was not a significant source of variation for most of the traits measured, whereas major differences were observed between the two sites. Plants that overwintered at an exposed site above the treeline showed high relative winter damage, assessed by the electrolyte leakage of the leaves. No severe winter damage was observed in the plants that overwintered under a moderate snowpack at a sheltered birch forest site. These plants were able to maintain their photosynthetic capacity through the winter. A low...

【 授权许可】

CC BY-NC