scholarly journals Patterns in a species‐rich tropical understory plant community

Biotropica ◽  
2019 ◽  
Vol 51 (5) ◽  
pp. 664-673 ◽  
Author(s):  
Julie S. Denslow ◽  
Luis Guillermo Chaverri S. ◽  
Orlando Vargas R.
Biotropica ◽  
2015 ◽  
Vol 47 (2) ◽  
pp. 152-161 ◽  
Author(s):  
Estela Quintero-Vallejo ◽  
Yannick Klomberg ◽  
Frans Bongers ◽  
Lourens Poorter ◽  
Marisol Toledo ◽  
...  

2006 ◽  
Vol 36 (9) ◽  
pp. 2065-2079 ◽  
Author(s):  
Paula Bartemucci ◽  
Christian Messier ◽  
Charles D Canham

We have characterized overstory light transmission, understory light levels, and plant communities in mixed wood boreal forests of northwestern Quebec with the objective of understanding how overstory light transmission interacts with composition and time since disturbance to influence the diversity and composition of understory vegetation, and, in turn, the further attenuation of light to the forest floor by the understory. Overstory light transmission differed among three forest types (aspen, mixed deciduous–conifer, and old cedar-dominated), with old forests having higher proportions of high light levels than aspen and mixed forests, which were characterized by intermediate light levels. The composition of the understory plant communities in old forests showed the weakest correlation to overstory light transmission, although those forests had the largest range of light transmission. The strongest correlation between characteristics of overstory light transmission and understory communities was found in aspen forests. Species diversity indices were consistently higher in aspen forests but showed weak relationships with overstory light transmission. Light attenuation by the understory vegetation and total height of the understory vegetation were strongly and positively related to overstory light transmission but not forest type. Therefore, light transmission through the overstory influenced the structure and function of understory plants more than their diversity and composition. This is likely due to the strong effect of the upper understory layers, which tend to homogenize light levels at the forest floor regardless of forest type. The understory plant community acts as a filter, thereby reducing light levels at the forest floor to uniformly low levels.


2013 ◽  
Vol 289 ◽  
pp. 478-488 ◽  
Author(s):  
D.W. Huffman ◽  
M.T. Stoddard ◽  
J.D. Springer ◽  
J.E. Crouse ◽  
W.W. Chancellor

2013 ◽  
Vol 289 ◽  
pp. 209-218 ◽  
Author(s):  
Azim U. Mallik ◽  
David P. Kreutzweiser ◽  
Cristina M. Spalvieri ◽  
Robert W. Mackereth

2005 ◽  
Vol 83 (12) ◽  
pp. 1550-1560 ◽  
Author(s):  
Kevin J. Kemball ◽  
G. Geoff Wang ◽  
Qing-Lai Dang

The understory plant community of 63 boreal mixedwood stands in southeastern Manitoba, Canada, that were disturbed in the 1980s (21 by crown fire, 20 by logging, and 22 by severe spruce budworm ( Choristoneura fumiferana ) outbreak) were investigated. Understory plant communities that developed after fire, logging, and spruce budworm outbreak shared a large number of species (47 out of 81 identified). However, compared with fire and spruce budworm outbreak, logging promoted the rapid expansion of tall shrubs (52.7% vs. 17.2% and 29.75% coverage, respectively), particularly Corylus cornuta . Significant differences were also found between disturbance types when species coverage was compared on the basis of shade tolerance and regeneration strategy. Lower shrub coverage following fire is attributed to greater disturbance severity on the forest floor, affecting in situ propagules and competition from dense trembling aspen ( Populus tremuloides Michx.) regeneration. Lower shrub coverage following spruce budworm outbreak is attributed to slow opening of the canopy coupled with retention of a residual canopy of nonhost trees. Uniformly high shrub coverage following logging resulted in less heterogeneity and lower species diversity at both the stand and the disturbance level compared with natural disturbances. High shrub coverage may negatively impact conifer recruitment and have significant implications for future stand composition and productivity. Consideration of a natural insect outbreak model, rather than fire, for management of boreal mixedwood stands is recommended, particularly if stands are to be left to regenerate naturally.


Ecology ◽  
2017 ◽  
Vol 98 (8) ◽  
pp. 2225-2225 ◽  
Author(s):  
Gregory M. Ames ◽  
Steven M. Anderson ◽  
Eric A. Ungberg ◽  
Justin P. Wright

2011 ◽  
Vol 26 (1) ◽  
pp. 3-12 ◽  
Author(s):  
HIROSHI TOMIMATSU ◽  
HIROKI YAMAGISHI ◽  
IPPEI TANAKA ◽  
MASATOSHI SATO ◽  
RENZO KONDO ◽  
...  

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