東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Vegetation and floristic diversity i...

Thomas, Kathryn Alice.

Linked to FindBook

Google Book

Amazon

博客來

Vegetation and floristic diversity in the Mojave Desert of California: A regional conservation evaluation.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Vegetation and floristic diversity in the Mojave Desert of California: A regional conservation evaluation./
Author:	Thomas, Kathryn Alice.
Description:	191 p.
Notes:	Source: Dissertation Abstracts International, Volume: 57-04, Section: B, page: 2302.
Contained By:	Dissertation Abstracts International57-04B.
Subject:	Biology, Ecology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9626209

Vegetation and floristic diversity in the Mojave Desert of California: A regional conservation evaluation.
Thomas, Kathryn Alice.

Vegetation and floristic diversity in the Mojave Desert of California: A regional conservation evaluation. - 191 p.

Source: Dissertation Abstracts International, Volume: 57-04, Section: B, page: 2302.

Thesis (Ph.D.)--University of California, Santa Barbara, 1996.

The Mojave Desert in California is currently the focus of conservation and ecosystem management planning efforts, all of which have a common need for biological data. One such effort, the Gap Analysis Program (GAP) provided a mechanism to examine both basic and applied biogeographical issues in the Mojave. Three objectives were accomplished: the development of a GIS based coverage of Mojave vegetation, a new analysis of a tabular database of Mojave flora, and a region-wide conservation assessment.Subjects--Topical Terms:

1017726
Biology, Ecology.

Vegetation and floristic diversity in the Mojave Desert of California: A regional conservation evaluation.
LDR:03538nmm 2200325 4500 001 1841280
005 20050908073011.5
008 130614s1996 eng d
035 $a (UnM)AAI9626209
035 $a AAI9626209
040 $a UnM $c UnM
100 1 $a Thomas, Kathryn Alice. $3 1929586
245 1 0 $a Vegetation and floristic diversity in the Mojave Desert of California: A regional conservation evaluation.
300 $a 191 p.
500 $a Source: Dissertation Abstracts International, Volume: 57-04, Section: B, page: 2302.
500 $a Co-Chairpersons: Frank Davis; Joel Michaelsen.
502 $a Thesis (Ph.D.)--University of California, Santa Barbara, 1996.
520 $a The Mojave Desert in California is currently the focus of conservation and ecosystem management planning efforts, all of which have a common need for biological data. One such effort, the Gap Analysis Program (GAP) provided a mechanism to examine both basic and applied biogeographical issues in the Mojave. Three objectives were accomplished: the development of a GIS based coverage of Mojave vegetation, a new analysis of a tabular database of Mojave flora, and a region-wide conservation assessment.
520 $a A Mojave vegetation coverage was created using existing subregional vegetation maps, updated with 1990 Landsat Thematic Mapper imagery. Vegetation classification for each mapping source was cross referenced to the Holland (1986) system. Extensive field checking was conducted to validate the cross-referencing and to update map units where necessary. The reliability of each map unit in the vegetation coverage was indicated with a qualitatively derived confidence score. A quantitative accuracy assessment was made for a subregion of the Mojave using existing plot data. The results of this accuracy assessment were used to calibrate the confidence score and provide an estimate of accuracy across the entire coverage. The vegetation coverage provides the most current regional view of Mojave vegetation.
520 $a The Lum database, which provides a description of the occurrence and various floristic properties of Californian species, was subsampled for the Mojave. Tabular analysis of the database shows the Mojave to support approximately 1150 species, which is proportional to its area compared to the rest of the state. Life-form distribution was shown to correlate with regional precipitation patterns; annuals predominate in the west and herbaceous perennials in the east and north. Cover types are distinct within subregions and often between subregions, as determined by Jaccard's similarity coefficient. Cluster analysis suggests that a two and/or a five subregion division of the Mojave could serve to geographically represent species variation.
520 $a A conservation evaluation was made of the Mojave using the vegetation coverage, regionalized by floristic subregions. The coverage was overlain with a land ownership map that had been reclassed to three levels of biodiversity management. Management status of the various cover types was evaluated and eight vulnerable cover types were identified using a three part criteria. Seven areas were selected as candidate areas for further conservation effort.
590 $a School code: 0035.
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Environmental Sciences. $3 676987
650 4 $a Biology, Botany. $3 1017825
690 $a 0329
690 $a 0768
690 $a 0309
710 2 0 $a University of California, Santa Barbara. $3 1017586
773 0 $t Dissertation Abstracts International $g 57-04B.
790 1 0 $a Davis, Frank, $e advisor
790 1 0 $a Michaelsen, Joel, $e advisor
790 $a 0035
791 $a Ph.D.
792 $a 1996
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9626209