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Growth response of spruce saplings in relation to climatic conditions along a gradient of gap size

Drobyshev, Igor LU and Nihlgård, Bengt LU (2000) In Canadian Journal of Forest Research 30(6). p.930-938
Abstract
To evaluate the relative importance of climatic factors and the level of natural canopy disturbance on sapling growth rates, terminal shoot increment of Norway spruce (Picea abies (L.) Karst.) saplings was analyzed in old-growth Sphagnum-Myrtillus forests of the European southern boreal zone (Tver Region, Russia). For a 5-year period, terminal increments were retrospectively measured in 225 saplings in a range of naturally created canopy gaps. Climatic variability was estimated by Seljaninov hydrothermal coefficient. Variation in the growth rate was partitioned as (i) annual variation observed within a particular sapling over a 5-year period ("within-stem variation," WSV) and (ii) variation of 5-year cumulative height increments within a... (More)
To evaluate the relative importance of climatic factors and the level of natural canopy disturbance on sapling growth rates, terminal shoot increment of Norway spruce (Picea abies (L.) Karst.) saplings was analyzed in old-growth Sphagnum-Myrtillus forests of the European southern boreal zone (Tver Region, Russia). For a 5-year period, terminal increments were retrospectively measured in 225 saplings in a range of naturally created canopy gaps. Climatic variability was estimated by Seljaninov hydrothermal coefficient. Variation in the growth rate was partitioned as (i) annual variation observed within a particular sapling over a 5-year period ("within-stem variation," WSV) and (ii) variation of 5-year cumulative height increments within a particular location ("within-location variation," WLV). Sapling growth was positively related to gap size and, except when under canopy location, with the height of the saplings. For the growth, differences in sapling location along a gradient of gap sizes were more important than annual dynamics of water availability. Impact of the annual climatic variability was less pronounced in large gap, compared with other locations. Absolute values of WSV and WLV were similar under an intact canopy. WSV had a tendency to decrease in greater gaps, whereas WLV variation increased. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Canadian Journal of Forest Research
volume
30
issue
6
pages
930 - 938
publisher
NRC Research Press
external identifiers
  • scopus:0033823978
ISSN
1208-6037
DOI
10.1139/cjfr-30-6-930
language
English
LU publication?
yes
id
75fd5bd6-aa14-4eea-9d8d-29df82f39c1f (old id 153024)
date added to LUP
2007-07-02 09:27:33
date last changed
2017-01-01 04:49:29
@article{75fd5bd6-aa14-4eea-9d8d-29df82f39c1f,
  abstract     = {To evaluate the relative importance of climatic factors and the level of natural canopy disturbance on sapling growth rates, terminal shoot increment of Norway spruce (Picea abies (L.) Karst.) saplings was analyzed in old-growth Sphagnum-Myrtillus forests of the European southern boreal zone (Tver Region, Russia). For a 5-year period, terminal increments were retrospectively measured in 225 saplings in a range of naturally created canopy gaps. Climatic variability was estimated by Seljaninov hydrothermal coefficient. Variation in the growth rate was partitioned as (i) annual variation observed within a particular sapling over a 5-year period ("within-stem variation," WSV) and (ii) variation of 5-year cumulative height increments within a particular location ("within-location variation," WLV). Sapling growth was positively related to gap size and, except when under canopy location, with the height of the saplings. For the growth, differences in sapling location along a gradient of gap sizes were more important than annual dynamics of water availability. Impact of the annual climatic variability was less pronounced in large gap, compared with other locations. Absolute values of WSV and WLV were similar under an intact canopy. WSV had a tendency to decrease in greater gaps, whereas WLV variation increased.},
  author       = {Drobyshev, Igor and Nihlgård, Bengt},
  issn         = {1208-6037},
  language     = {eng},
  number       = {6},
  pages        = {930--938},
  publisher    = {NRC Research Press},
  series       = {Canadian Journal of Forest Research},
  title        = {Growth response of spruce saplings in relation to climatic conditions along a gradient of gap size},
  url          = {http://dx.doi.org/10.1139/cjfr-30-6-930},
  volume       = {30},
  year         = {2000},
}