Blue oak seedling age influences growth and mortality
AuthorsRalph L. Phillips
Neil K. McDougald
Edward R. Atwill
Authors AffiliationsR. L. Phillips was Range/Natural Resources and Livestock Advisor, UC Cooperative Extension (UCCE), Kern and Tulare counties (now retired); N.K. McDougald is Area Watershed Management Advisor, UCCE Madera and Fresno counties; E.R. Atwill is Professor of Environmental Animal Health and Medical Ecology, School of Veterinary Medicine, UC Davis.
Hilgardia 61(1):11-15. DOI:10.3733/ca.v061n01p11. January 2007.
In some California locations, the natural regeneration of blue oak is limited by the ability of small seedlings to survive long enough to become larger saplings. This study evaluated the growth and survival of different age classes of seedlings. We found that over a 7-year period, older blue oak seedlings had a much higher survival rate than younger seedlings. Under this study's conditions, however, the height of younger seedlings increased while that of older seedlings decreased. These results suggest that once a seedling survives approximately a decade and becomes established, it is much more likely to remain alive compared to newly germinated seedlings. Nonetheless, its height growth rate may be extremely slow.
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Also in this issue:The Predictive Models and Procedures Used in the Forest Stand Generator (STAG)
Taking the university to the people
Letters: January-March 2007
Expanded research to target E. coli outbreaks
Oaks: Research and outreach to prevent woodland loss
Treatments could slow spread of sudden oak death
Exclosure size affects young blue oak seedling growth
The Coyote Lure Operative Device revisited: A fresh look at an old idea
California cotton growers utilize integrated pest management
High spring temperatures decrease peach fruit size
Quality evaluations should not be taken for granted
California teachers support the Nutrition Competencies new nutrition instruction guidelines