Vegetation patterns of Pine Canyon, Big Bend National Park, Texas, in relation to elevation and slope aspect /
(environmental) gradient. Diversity of woody plants at each
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1997.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (environmental) gradient. Diversity of woody plants at each analysis of importance values, of prevalent species, on the are also analyzed. Communities encountered on the south- as elevation decreases into the sotol grassland and at each sampling level, and at the lower elevations on both Chihuahuan Desert shrubland. On the more mesic north-facing Data on the woody vegetation of Pine Canyon, Big Bend Desert shrubland at the lowest elevation sampling level, and Desert shrubland, sotol grassland, open oak shrubland, mixed Diversity and richness are consistently higher on the north- Diversity and richness are lowest in the middle elevations on elevation, are: Chihuahuan Desert shrubland, sotol grassland, elevational gradient of both slope aspects support the idea encountered on the north-facing slope, from low to high facing and north-facing slope. The data is used in a facing slope at each sampling level. On the more mesic facing slope, from low to high elevation, are: Chihuahuan from 1250 m to 2000 m elevation using the point-centered importance values, diversity and richness, and stem density important on both slope aspects. Succulents are more important on the north-facing slope. A direct gradient important on the south-facing slope, while trees are more lifeform distribution. Direct gradient analysis of species' m, 1500 m, 1625 m, 1750 m, 1875 m, and 2000 m on the south- National Park, Texas was gathered on an elevational gradient oak-pinyon-juniper woodland at 2000 m elevation, and decline open oak-pinyon woodland, oak-pinyon-juniper woodland, oak- peak in importance at a single position on the elevational pine woodland, and mixed woodland. Shrubs are equally qualitative analysis of communities, species composition, and quarter method. Sampling was conducted at 12 sites at 1250 sampling site was calculated using the Shannon-Weiner Index, shrubland, and oak-pinyon-juniper woodland. Communities slope aspects. slope, diversity and richness are highest in the Chihuahuan south-facing slope, diversity and richness are highest in the Stem density is consistently higher on the south-facing slope that plant species do not always the mixed woodland at the highest elevation sampling level. the north-facing slope, especially in the sotol grassland. while richness was the number of species at each site. |
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| Item Description: | "Major subject: Geography". Vita. |
| Physical Description: | xi, 81 leaves : illustrations, maps ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |