Landbird Abundance and Diversity in Different-Aged Stands of Coast Redwood Forests in Northwestern California

1999 ◽  
Vol 80 (3) ◽  
pp. 99 ◽  
Author(s):  
Gjon C. Hazard ◽  
T. Luke George
Keyword(s):  
Coast Redwood ◽  
Redwood Forests ◽  
Abundance And Diversity

Proceedings of the coast redwood forests in a changing California: A symposium for scientists and managers

2012 ◽  
Author(s):  
Richard B. Standiford ◽  
Theodore J. Weller ◽  
Douglas D. Piirto ◽  
John D Stuart
Keyword(s):  
Coast Redwood ◽  
Redwood Forests

Forest transformation resulting from an exotic pathogen: regeneration and tanoak mortality in coast redwood stands affected by sudden oak death

2011 ◽  
Vol 41 (4) ◽  
pp. 763-772 ◽  
Author(s):  
Benjamin S. Ramage ◽  
Kevin L. O’Hara ◽  
Alison B. Forrestel
Keyword(s):  
Canopy Cover ◽  
Phytophthora Ramorum ◽  
Sudden Oak Death ◽  
Coast Redwood ◽  
Marin County ◽  
Wildlife Species ◽  
Management Interventions ◽  
Redwood Forests ◽  
Exotic Pathogen ◽  
Notholithocarpus Densiflorus

Sudden oak death is dramatically altering forests throughout coastal California, but little is known about the communities that are assembling in affected areas. This emerging disease, caused by the exotic pathogen Phytophthora ramorum (S. Werres, A.W.A.M. de Cock), has had especially severe effects on tanoak ( Notholithocarpus densiflorus (Hook. & Arn.) Manos, Cannon & S.H. Oh), a broadleaf evergreen that is abundant in forests dominated by coast redwood ( Sequoia sempervirens (D.Don) Endl.). Tanoak, a valuable food source to numerous wildlife species, is unlikely to successfully regenerate in diseased areas, and thus, affected redwood forests are transitioning to a novel state. In this study, to predict which species might replace tanoak, we investigated regeneration patterns in heavily impacted stands in Marin County, California. Our main findings were as follows: (i) despite reductions in canopy cover, there is no evidence that any species other than tanoak has exhibited a regenerative response to tanoak mortality, (ii) the regeneration stratum was dominated by redwood and tanoak (other tree species were patchy and (or) scarce), and (iii) some severely affected areas lacked sufficient regeneration to fully re-occupy available growing space. Our results indicate that redwood is likely to initially re-occupy the majority of the ground relinquished by tanoak, but also provide evidence that longer-term trajectories are unresolved, and may be highly responsive to management interventions.

Conservation of the California Coast Redwood and its Environment

1975 ◽  
Vol 2 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Ian G. Simmons ◽  
Thomas R. Vale
Keyword(s):  
Climatic Factors ◽  
Coast Redwood ◽  
Degradation Rates ◽  
Large Trees ◽  
Living Species ◽  
Redwood Forests ◽  
Human Use ◽  
Climatic Range ◽  
North Western ◽  
Southern Extremity

The genus Sequoia has existed since Mesozoic times, and early Tertiary Redwoods occurred practically throughout the northern hemisphere. Today, the Coast Redwood (Sequoia sempervirens) is the only living species of the genus, and it is restricted to the coastal environments of California and the southern extremity of Oregon. Climatic factors determine the outer limits of Redwood distribution, while edaphic, biotic, and hydrologic, variables influence the occurrence of Redwood within the climatic range.Human use of Redwood forests has altered the environmental conditions under which the Sequoia now grows. Logging has exposed the forest floor to increased light and higher temperatures, while in some places it has exposed the soil to accelerated erosion. Recent floods in the major watersheds of north-western California have been particularly disastrous in undercutting large trees along the river banks. Increased degradation rates on upper slopes have resulted in delivery of coarse sediments to floodplains, with possibly deleterious effects on living old-growth Redwoods.

Presettlement and modern disturbance regimes in coast redwood forests: Implications for the conservation of old-growth stands

2009 ◽  
Vol 258 (7) ◽  
pp. 1038-1054 ◽  
Author(s):  
Craig G. Lorimer ◽  
Daniel J. Porter ◽  
Mary Ann Madej ◽  
John D. Stuart ◽  
Stephen D. Veirs ◽  
...  
Keyword(s):  
Old Growth ◽  
Coast Redwood ◽  
Disturbance Regimes ◽  
Redwood Forests

scholarly journals The role of fire in the competitive dynamics of coast redwood forests

Ecosphere ◽  
2010 ◽  
Vol 1 (6) ◽  
pp. art20 ◽  
Author(s):  
B. S. Ramage ◽  
K. L. O'Hara ◽  
B. T. Caldwell
Keyword(s):  
Competitive Dynamics ◽  
Coast Redwood ◽  
Redwood Forests

scholarly journals Fuel load, stand structure, and understory species composition following prescribed fire in an old-growth coast redwood (Sequoia sempervirens) forest

Fire Ecology ◽  
2021 ◽  
Vol 17 (1) ◽  
Author(s):  
David Cowman ◽  
Will Russell
Keyword(s):  
Species Composition ◽  
Prescribed Burning ◽  
Sequoia Sempervirens ◽  
Anthropogenic Sources ◽  
Fuel Load ◽  
Old Growth ◽  
Understory Species ◽  
Coast Redwood ◽  
Understory Species Composition ◽  
Redwood Forests

Abstract Background With the prevalence of catastrophic wildfire increasing in response to widespread fire suppression and climate change, land managers have sought methods to increase the resiliency of landscapes to fire. The application of prescribed burning in ecosystems adapted to fire can reduce fuel load and fire potential while minimizing impacts to the ecosystem as a whole. Coast redwood forests have historically experienced fire from both natural and anthropogenic sources, and are likely to respond favorably to its reintroduction. Results Random sampling was conducted in three burned sites and in three unburned sites, in an old-growth coast redwood (Sequoia sempervirens [D. Don] Endl.) forest. Data were collected on fuel, forest structure, and understory species composition and compared between treatments. Downed woody fuel, duff depth, litter depth, and density of live woody fuels were found to be significantly lower on sites treated with fire compared to unburned sites. Density of the dominant overstory canopy species, coast redwood and Douglas-fir (Pseudotsuga menziesii var. menziesii [Mirb.] Franco), remained consistent between treatments, and the abundance of herbaceous understory plant species was not significantly altered by burning. In addition, both downed woody fuel and live fuel measures were positively correlated with time since last burn, with the lowest measures on the most recently burned sites. Conclusions Our results indicated that the use of prescribed burning in old-growth redwood forests can provide beneficial reductions in live and dead surface fuels with minimal impacts to overstory trees and understory herbaceous species.

scholarly journals Plant Uptake of Atmospheric Carbonyl Sulfide in Coast Redwood Forests

2017 ◽  
Vol 122 (12) ◽  
pp. 3391-3404 ◽  
Author(s):  
J. E. Campbell ◽  
M. E. Whelan ◽  
J. A. Berry ◽  
T. W. Hilton ◽  
A. Zumkehr ◽  
...  
Keyword(s):  
Plant Uptake ◽  
Carbonyl Sulfide ◽  
Coast Redwood ◽  
Redwood Forests
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