Resource Catalog
Document
This reseach analyzes patch development and determines tree spatial patterns along the lower mixed-conifer ecotone on the North Rim of Grand Canyon National Park in Arizona (U.S.A.). Patterns of patch development were interpreted from spatial analyses, based on tree age and size, and past records of disturbance and climate. Five plots in the ecotone between mixed conifer forests and monospecific stands of ponderosa pine (Pinus ponderosa) were studied for patterns of patch development. The methods used include: (1) size-structure analyses, to compare species patch development; (2) dendrochronological dating of tree establishment; (3) tree ring master chronology, to determine periods of suppressed growth, compared to a Palmer Drought Severity Index; and (4) spatial analyses by species composition, size and age, with univariate and bivariate analyses of spatial association and spatial autocorrelation. We found an increased density of shade-tolerant and fire-intolerant species namely clusters of pole-sized white fir, and fewer large ponderosa pine. © 2004 Kluwer Academic Publishers. Printed in the Netherlands.
Cataloging Information
- Abies concolor
- Achillea millefolium
- age classes
- Amelanchier utahensis
- Arizona
- Berberis repens
- biogeography
- Bromus ciliatus
- coniferous forests
- dendrochronology
- dendrochronology
- distribution
- disturbance
- droughts
- ecotone
- ecotones
- elevation
- Eriogonum
- fire dependent species
- fire frequency
- fire injuries (plants)
- fire management
- fire resistant plants
- fire sensitive plants
- fire suppression
- forest management
- Fragaria
- Geranium
- invasive species
- light
- lightning caused fires
- Lupinus argenteus
- mixed-conifer
- mosaic
- national parks
- Netherlands
- overstory
- patch structure
- Pinus ponderosa
- plant growth
- ponderosa pine
- population density
- Populus
- Robinia
- season of fire
- size classes
- spatial analysis
- species diversity (plants)
- statistical analysis
- Verbena
- white fir
- wildfires
This bibliographic record was either created or modified by Tall Timbers and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of Tall Timbers.