Nom du corpus

Corpus Systématique Végétale

Titre du document

Forest decline: Endogenous dynamics, tree defenses, and the elimination of spurious correlation

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Acid rain
  • Dieback
  • Pollution
  • Senescence
  • Tree defense
  • Tree ring width
Nom du fichier dans la ressource
Syst_veg6_v2_031251
Auteur(s)
  • Craig Loehle
Affiliation(s)
  • Savannah River Laboratory, Savannah River Plant, Environmental Sciences Division, 29808-0001, Aiken, SC, USA
Résumé

Two important unresolved problems in pollution impact research are early detection of changes in tree and forest growth and determination of the causes of observed growth declines. Consideration of tree defensive systems can shed light on dieback phenomena. Trees possess both chemical and structural defenses, with both types having both active and passive dimensions. When stress or pollution causes a reduction in vigor, defenses may become ineffective, resulting in insect pest and pathogen attack. This leads to a positive feedback cycle of declining vigor. Level of defenses differs by species, site, and life-stage. Consideration of these factors leads to better statistical methods for correlating pollution dose with tree growth response. It is shown that several recent studies are potentially flawed by inadequate consideration of species type, tree age, or stand density. It is shown that forest growth models can be used to correct for endogenous changes in tree growth rates as long as the trees used to derive parameters for the model were not themselves affected by pollution.

Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - psychologie. psychophysiologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Plant Science
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
Identifiant ISTEX
1E315E12377CA8952A4B6BB4028098A3E2604E09
Revue

Vegetatio

Année de publication
1988
Présence de XML structuré
Non
Score qualité du texte
9.028
Version PDF
1.3
Type de publication
Journal
ark:/67375/1BB-01GLKB2T-Z
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