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The role of anthropogenic influences in a mixed‐conifer forest mortality episode

The role of anthropogenic influences in a mixed‐conifer forest mortality episode Abstract. Anthropogenic influences on recent tree mortality in mid‐montane mixed conifer forests of southern California, USA, and northern Baja California, Mexico, were investigated. The Pinus jeffreyi‐Abies concolor phase of the mixed‐conifer montane community was sampled at three sites, characterized by: (1) low levels of air pollution and long‐term fire suppression (Holcomb Valley in the San Bernardino Mountains, California); (2) chronic, severe air pollution and long‐term fire suppression (Barton Flats in the San Bernardino Mountains, California); and (3) little air pollution and no fire suppression (La Corona Arriba in the Sierra San Pedro Martir in Baja California, Mexico). Similar percentages of dead standing trees, around 14 %, were found at both San Bernardino sites, but a comparatively low level, 4 %, was found in the Mexican forest. Anthropogenic effects, in particular fire suppression, may play an important role in enhancing the impact of natural stresses on the dynamics of mixed conifer forests. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Vegetation Science Wiley

The role of anthropogenic influences in a mixed‐conifer forest mortality episode

Journal of Vegetation Science , Volume 8 (1) – Feb 1, 1997

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References (39)

Publisher
Wiley
Copyright
1997 IAVS ‐ the International Association of Vegetation Science
ISSN
1100-9233
eISSN
1654-1103
DOI
10.2307/3237247
Publisher site
See Article on Publisher Site

Abstract

Abstract. Anthropogenic influences on recent tree mortality in mid‐montane mixed conifer forests of southern California, USA, and northern Baja California, Mexico, were investigated. The Pinus jeffreyi‐Abies concolor phase of the mixed‐conifer montane community was sampled at three sites, characterized by: (1) low levels of air pollution and long‐term fire suppression (Holcomb Valley in the San Bernardino Mountains, California); (2) chronic, severe air pollution and long‐term fire suppression (Barton Flats in the San Bernardino Mountains, California); and (3) little air pollution and no fire suppression (La Corona Arriba in the Sierra San Pedro Martir in Baja California, Mexico). Similar percentages of dead standing trees, around 14 %, were found at both San Bernardino sites, but a comparatively low level, 4 %, was found in the Mexican forest. Anthropogenic effects, in particular fire suppression, may play an important role in enhancing the impact of natural stresses on the dynamics of mixed conifer forests.

Journal

Journal of Vegetation ScienceWiley

Published: Feb 1, 1997

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