scholarly journals Nonconsumptive effects of a generalist ungulate herbivore drive decline of unpalatable forest herbs

Ecology ◽  
2010 ◽  
Vol 91 (2) ◽  
pp. 319-326 ◽  
Author(s):  
Christopher D. Heckel ◽  
Norman A. Bourg ◽  
William J. McShea ◽  
Susan Kalisz
2021 ◽  
Vol 58 (10) ◽  
pp. 2195-2206 ◽  
Author(s):  
Jörg Brunet ◽  
Per‐Ola Hedwall ◽  
Jessica Lindgren ◽  
Sara A. O. Cousins

2014 ◽  
Vol 169 ◽  
pp. 238-247 ◽  
Author(s):  
Arno Thomaes ◽  
Luc De Keersmaeker ◽  
Pieter Verschelde ◽  
Kris Vandekerkhove ◽  
Kris Verheyen

Ecology ◽  
1989 ◽  
Vol 70 (6) ◽  
pp. 1645-1648 ◽  
Author(s):  
Brent H. Smith ◽  
Catherine E. deRivera ◽  
Cara Lin Bridgman ◽  
John J. Woida

Ecology ◽  
2015 ◽  
Vol 96 (3) ◽  
pp. 611-616 ◽  
Author(s):  
Julius A. Ellrich ◽  
Ricardo A. Scrosati ◽  
Markus Molis

2009 ◽  
Vol 18 (6) ◽  
pp. 641-651 ◽  
Author(s):  
P. De Frenne ◽  
A. Kolb ◽  
K. Verheyen ◽  
J. Brunet ◽  
O. Chabrerie ◽  
...  

AoB Plants ◽  
2017 ◽  
Vol 9 (2) ◽  
Author(s):  
J. Mason Heberling ◽  
Nathan L. Brouwer ◽  
Susan Kalisz

2007 ◽  
Vol 85 (3) ◽  
pp. 285-298 ◽  
Author(s):  
Ryan D. Haugo ◽  
Charles B. Halpern

Conifer invasion of mountain meadows is pervasive in western North America, but its consequences for plant composition and diversity have not been studied. We used a chronosequence approach to reconstruct temporal patterns of vegetation change in response to ~200 years of conifer encroachment of a dry, montane meadow in the western Cascade Range, Oregon. Tree age distributions, forest structure, light, and vegetation composition were determined for three hundred and fifty-six 10 m × 10 m samples representing a gradient from open meadow to old forest (>90 years). Nonmetric multidimensional scaling revealed strong turnover in species composition from open meadow to old forest. Ordination axes were highly correlated with light availability and density/basal area of encroaching grand fir, Abies grandis (Dougl. ex D. Don) Lindl., and lodgepole pine, Pinus contorta Dougl. ex Loud. Cover of meadow species declined steeply with establishment of A. grandis ; richness declined more gradually and extirpations of meadow species were rare. Forest herbs colonized within two decades of tree establishment and within 60–80 years dominated the understory flora. In contrast with meadow species, changes in richness and cover of forest herbs were weakly related to changes in forest structure. Rapid replacement of meadow by forest species and long-term effects of trees on soils may limit potential for restoration of these unique habitats.


Botany ◽  
2021 ◽  
Author(s):  
Joseph A. Antos ◽  
Donald B. Zobel ◽  
Dylan Fischer

Forest understory herbs exhibit a large range of variation in morphology and life history. Here we expand the reported range of variation by describing the belowground structures of two very different species, Xerophyllum tenax and Chimaphila umbellata. We excavated individuals in forests of the Cascade Mountains, Pacific Northwest, USA. Xerophyllum tenax has short rhizomes, but an extensive root system that is exceptionally large among forest understory species. The roots reach 4 m in length and may occupy an area 50 times that of the aboveground canopy. In contrast, Chimaphila umbellata has very small roots, but an extensive rhizome system. The largest plant we excavated had 57 m of connected rhizomes and still had a seedling source. Both species have long-lived individuals but differ in response to disturbance. Based on monitoring of 151 permanent 1 m2 plots in an old-growth forest, X. tenax increased only minimally in density over 40 years following tephra deposition from the 1980 eruption of Mount St. Helens, whereas density of C. umbellata increased substantially. The very different morphology of these two species highlights the large range of variation found among forest herbs, which needs to be considered when examining the forest understory.


2020 ◽  
Vol 39 (3) ◽  
pp. 549-558
Author(s):  
Benjamin J. Koch ◽  
Robert O. Hall ◽  
Barbara L. Peckarsky

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