Effects of canopy composition and disturbance type on understorey plant assembly in boreal forests

2015 ◽  
Vol 26 (6) ◽  
pp. 1225-1237 ◽  
Author(s):  
Arnaud Fourrier ◽  
Mathieu Bouchard ◽  
David Pothier
Keyword(s):  
Boreal Forests ◽  
Canopy Composition ◽  
Understorey Plant

Canopy composition and drought shape understorey plant assemblages in a young tree diversity experiment

2020 ◽  
Vol 31 (5) ◽  
pp. 803-816
Author(s):  
Emmanuel Corcket ◽  
Didier Alard ◽  
Inge Halder ◽  
Hervé Jactel ◽  
Begoña Garrido Diaz ◽  
...  
Keyword(s):  
Tree Diversity ◽  
Young Tree ◽  
Canopy Composition ◽  
Plant Assemblages ◽  
Understorey Plant

Understorey plant and soil responses to disturbance and increased nitrogen in boreal forests

2009 ◽  
Vol 20 (2) ◽  
pp. 311-322 ◽  
Author(s):  
O.H. Manninen ◽  
S. Stark ◽  
M.-M. Kytöviita ◽  
L. Lampinen ◽  
A. Tolvanen
Keyword(s):  
Boreal Forests ◽  
Soil Responses ◽  
Understorey Plant

scholarly journals Patterns of bryophyte succession in a 160-year chronosequence in deciduous and coniferous forests of boreal Alaska

2017 ◽  
Vol 47 (8) ◽  
pp. 1021-1032 ◽  
Author(s):  
Mélanie Jean ◽  
Heather D. Alexander ◽  
Michelle C. Mack ◽  
Jill F. Johnstone
Keyword(s):  
Leaf Litter ◽  
Populus Tremuloides ◽  
Boreal Forests ◽  
Coniferous Forests ◽  
Stand Age ◽  
Organic Layer ◽  
Layer Depth ◽  
Litter Cover ◽  
Canopy Composition ◽  
Compositional Patterns

Bryophytes are dominant components of boreal forest understories and play a large role in regulating soil microclimate and nutrient cycling. Therefore, shifts in bryophyte communities have the potential to affect boreal forests’ ecosystem processes. We investigated how bryophyte communities varied in 83 forest stands in interior Alaska that ranged in age (since fire) from 8 to 163 years and had canopies dominated by deciduous broadleaf (Populus tremuloides Michx. or Betula neoalaskana Sarg.) or coniferous trees (Picea mariana Mill B.S.P.). In each stand, we measured bryophyte community composition, along with environmental variables (e.g., organic layer depth, leaf litter cover, moisture). Bryophyte communities were initially similar in deciduous vs. coniferous forests but diverged in older stands in association with changes in organic layer depth and leaf litter cover. Our data suggest two tipping points in bryophyte succession: one at the disappearance of early colonizing taxa 20 years after fire and another at 40 years after fire, which corresponds to canopy closure and differential leaf litter inputs in mature deciduous and coniferous canopies. Our results enhance understanding of the processes that shape compositional patterns and ecosystem services of bryophytes in relation to stand age, canopy composition, and changing disturbances such as fire that may trigger changes in canopy composition.

Syntaxonomy of mid-successional stages of secondary forests of the central elevated part of the Southern Urals

2012 ◽  
pp. 109-134
Author(s):  
P. S. Shirokikh ◽  
A. M. Kunafin ◽  
V. B. Martynenko
Keyword(s):  
Boreal Forests ◽  
Floristic Composition ◽  
Southern Urals ◽  
Secondary Forests ◽  
Natural Forests ◽  
The Southern Urals ◽  
Active Growth ◽  
Tree Layer ◽  
Shade Tolerant Species ◽  
Successional Stages

The secondary birch and aspen forests of middle stages of succession of the central elevated part of the Southern Urals are studied. 4 subassociations, 1 community, and 7 variants in the alliances of Aconito-Piceion and Piceion excelsae are allocated. It is shown that the floristic composition of aspen and birch secondary forests in the age of 60—80 years is almost identical to the natural forests. However, a slight increase the coenotical role of light-requiring species of grasslands and hemiboreal forests in the secondary communities of the class Brachypodio-Betuletea was noticed as well as some reduction of role the shade-tolerant species of nemoral complex and species of boreal forests of the class Vaccinio-Piceetea. Dominant tree layer under the canopy of secondary series is marked by an active growth of natural tree species.

Sign in / Sign up

Export Citation Format

Share Document