Genotyping a second growth coast redwood forest

Abstract Three stands of second-growth redwood forest were clearcut, and the logging slash in two of the units was broadcast burned following logging. Three types of redwood seedlings (plug, plug-one, and 2-year bareroot) were planted following logging and burning. Seedling survival rates were high, and there were no significant differences between survival and growth of stock types after 9 years. The native redwood sprouts were substantially larger than the planted seedlings, in both height and diameter, which could affect future growth of some seedlings. The status and dimensions of seedlings and native regeneration were periodically checked. The burned units were fully occupied by a dense, tall growth of brush within a few years, and the brush became re-established after a successful initial herbicide treatment.

Download Full-text

EFFECTS OF SILVICULTURAL MANAGEMENT ON COAST REDWOOD FOREST COMPOSITION, DENSITY AND STRUCTURE IN SANTA CRUZ AND SAN MATEO COUNTIES

10.15368/theses.2012.198 ◽

2012 ◽

Author(s):

Michael J Papa

Keyword(s):

Forest Composition ◽

Santa Cruz ◽

Coast Redwood ◽

Silvicultural Management ◽

Redwood Forest

Download Full-text

Fire history in a Sequoiasempervirens forest at Salt Point State Park, California

Canadian Journal of Forest Research ◽

10.1139/x89-221 ◽

1989 ◽

Vol 19 (11) ◽

pp. 1451-1457 ◽

Cited By ~ 16

Author(s):

Mark A. Finney ◽

Robert E. Martin

Keyword(s):

Fire History ◽

Moving Average ◽

Fire Scars ◽

Coast Redwood ◽

Fire Scar ◽

Point Data ◽

Substantial Bias ◽

Fire Intervals ◽

Redwood Forest ◽

Composite Data

Fire occurrence data between the 12th and 20th centuries were obtained from analysis of fire scars on coast redwood (Sequoiasempervirens (D. Don.) Endl.) and bishop pine (Pinusmuricata D. Don.). Mean fire intervals were calculated for settlement and presettlement periods from fire scar samples individually (point data) and from composites of samples aggregated within three approximately 200-ha study areas. Mean fire intervals from point data (20.5 to 29.0 years) were more than three times greater than mean intervals from composite data (6.1 to 9.3 years). Mean fire intervals derived from point data compared well with values previously reported, although substantial bias ascribed to point data suggests that these values for mean fire intervals in redwood forest communities are too large. A period of significantly longer fire intervals during the 17th century was suggested by analysis of fire intervals by century and using a moving average.

Download Full-text

Approximation of Fire-Return Intervals with Point Samples in the Southern Range of the Coast Redwood Forest, California, USA

Fire Ecology ◽

10.4996/fireecology.1103080 ◽

2015 ◽

Vol 11 (3) ◽

pp. 80-94 ◽

Cited By ~ 1

Author(s):

Gregory A. Jones ◽

Will Russell

Keyword(s):

Coast Redwood ◽

Redwood Forest

Download Full-text

Predicting Aboveground Biomass in Second Growth Coast Redwood: Comparing Localized with Generic Allometric Models

Forests ◽

10.3390/f7050096 ◽

2016 ◽

Vol 7 (12) ◽

pp. 96 ◽

Cited By ~ 4

Author(s):

Anil Kizha ◽

Han-Sup Han

Keyword(s):

Aboveground Biomass ◽

Coast Redwood ◽

Allometric Models ◽

Second Growth

Download Full-text

Estimating relative error in growth ring analyses of second-growth coast redwood (Sequoia sempervirens)

Canadian Journal of Forest Research ◽

10.1139/x06-127 ◽

2006 ◽

Vol 36 (9) ◽

pp. 2216-2222 ◽

Cited By ~ 20

Author(s):

Kristen M Waring ◽

Kevin L O'Hara

Keyword(s):

Cross Sections ◽

Growth Ring ◽

Ring Width ◽

Sequoia Sempervirens ◽

North Central ◽

Coast Redwood ◽

Central California ◽

Breast Height ◽

Second Growth ◽

Annual Growth Rings

Coast redwood (Sequoia sempervirens (D. Don) Endl.) grows in the coastal zone of north-central California and southern Oregon in pure and mixed-species forests. Redwood has long been recognized to exhibit unusual patterns within the annual growth rings typical of temperate forest trees, including partial and missing rings and ring-width anomalies. However, these patterns have not been quantified beyond a few suppressed trees. This study quantified the variation in ring counts occurring in 22 second-growth redwood trees from different canopy classes. Ring counts from cross sections taken at sample points along each tree bole revealed missing or incomplete rings in all sample trees and 70% of the cross sections. Ring counts along multiple radii were used to calculate probability of obtaining a maximum ring count along one radius. This probability was lowest at the tree base (0.25) and breast height (0.30) and highest near the top of the tree (0.90). Because of the high amount of variation present in ring counts at breast height, care should be taken when drawing conclusions regarding stand ages from increment cores. Increment cores should be taken from the longest axis of the tree and coring at tree base can be abandoned as cores are not likely to have higher ring counts than breast height cores.

Download Full-text