Fire-related recruitment in stagnant Quercus douglasii populations

Mitchel McClaran, J. W. Bartolome

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Age structure, stem analysis and fire-scar history from >500 blue oak individuals on 2 sites in central California revealed: 1) meager tree recruitment since the 1940s and few trees older than 150 yr; 2) increased fire frequency following Anglo-American settlement in 1848 until fire suppression efforts in the 1940s; 3) a positive association between tree ages and fire dates; and 4) superior vertical growth to 135 cm of postfire sprouts (trees with ground-level ages within 1 yr after fires) on the site with less livestock browsing pressure. The association between tree ages and fire dates may have resulted from temporal concentration of postfire seedling sprouts, and faster vertical growth of postfire sprouts compared with true seedlings. However, sampling from existing trees may dampen the difference in vertical growth rates between sprouts and true seedlings where there is heavy browsing, because only true seedlings that grew as fast as sprouts survived and were available for sampling. -from Authors

Original languageEnglish (US)
Pages (from-to)580-585
Number of pages6
JournalCanadian Journal of Forest Research
Volume19
Issue number5
StatePublished - 1989

Fingerprint

Quercus douglasii
seedlings
tree age
browsing
seedling
fire scars
fire suppression
age structure
fire history
livestock
sampling
history
stems
stem

ASJC Scopus subject areas

  • Forestry
  • Plant Science

Cite this

Fire-related recruitment in stagnant Quercus douglasii populations. / McClaran, Mitchel; Bartolome, J. W.

In: Canadian Journal of Forest Research, Vol. 19, No. 5, 1989, p. 580-585.

Research output: Contribution to journalArticle

@article{075be0cad9b5479bbff836c90b0f95ea,
title = "Fire-related recruitment in stagnant Quercus douglasii populations",
abstract = "Age structure, stem analysis and fire-scar history from >500 blue oak individuals on 2 sites in central California revealed: 1) meager tree recruitment since the 1940s and few trees older than 150 yr; 2) increased fire frequency following Anglo-American settlement in 1848 until fire suppression efforts in the 1940s; 3) a positive association between tree ages and fire dates; and 4) superior vertical growth to 135 cm of postfire sprouts (trees with ground-level ages within 1 yr after fires) on the site with less livestock browsing pressure. The association between tree ages and fire dates may have resulted from temporal concentration of postfire seedling sprouts, and faster vertical growth of postfire sprouts compared with true seedlings. However, sampling from existing trees may dampen the difference in vertical growth rates between sprouts and true seedlings where there is heavy browsing, because only true seedlings that grew as fast as sprouts survived and were available for sampling. -from Authors",
author = "Mitchel McClaran and Bartolome, {J. W.}",
year = "1989",
language = "English (US)",
volume = "19",
pages = "580--585",
journal = "Canadian Journal of Forest Research",
issn = "0045-5067",
publisher = "National Research Council of Canada",
number = "5",

}

TY - JOUR

T1 - Fire-related recruitment in stagnant Quercus douglasii populations

AU - McClaran, Mitchel

AU - Bartolome, J. W.

PY - 1989

Y1 - 1989

N2 - Age structure, stem analysis and fire-scar history from >500 blue oak individuals on 2 sites in central California revealed: 1) meager tree recruitment since the 1940s and few trees older than 150 yr; 2) increased fire frequency following Anglo-American settlement in 1848 until fire suppression efforts in the 1940s; 3) a positive association between tree ages and fire dates; and 4) superior vertical growth to 135 cm of postfire sprouts (trees with ground-level ages within 1 yr after fires) on the site with less livestock browsing pressure. The association between tree ages and fire dates may have resulted from temporal concentration of postfire seedling sprouts, and faster vertical growth of postfire sprouts compared with true seedlings. However, sampling from existing trees may dampen the difference in vertical growth rates between sprouts and true seedlings where there is heavy browsing, because only true seedlings that grew as fast as sprouts survived and were available for sampling. -from Authors

AB - Age structure, stem analysis and fire-scar history from >500 blue oak individuals on 2 sites in central California revealed: 1) meager tree recruitment since the 1940s and few trees older than 150 yr; 2) increased fire frequency following Anglo-American settlement in 1848 until fire suppression efforts in the 1940s; 3) a positive association between tree ages and fire dates; and 4) superior vertical growth to 135 cm of postfire sprouts (trees with ground-level ages within 1 yr after fires) on the site with less livestock browsing pressure. The association between tree ages and fire dates may have resulted from temporal concentration of postfire seedling sprouts, and faster vertical growth of postfire sprouts compared with true seedlings. However, sampling from existing trees may dampen the difference in vertical growth rates between sprouts and true seedlings where there is heavy browsing, because only true seedlings that grew as fast as sprouts survived and were available for sampling. -from Authors

UR - http://www.scopus.com/inward/record.url?scp=0024922825&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024922825&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0024922825

VL - 19

SP - 580

EP - 585

JO - Canadian Journal of Forest Research

JF - Canadian Journal of Forest Research

SN - 0045-5067

IS - 5

ER -