東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Origin and diversification of Hawaii...

Geiger, Jennifer Marie Ott.

FindBook

Google Book

Amazon

博客來

Origin and diversification of Hawaiian Dryopteris (Dryopteridaceae).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Origin and diversification of Hawaiian Dryopteris (Dryopteridaceae)./
作者:	Geiger, Jennifer Marie Ott.
面頁冊數:	127 p.
附註:	Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3034.
Contained By:	Dissertation Abstracts International64-07B.
標題:	Biology, Botany. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3096800

Origin and diversification of Hawaiian Dryopteris (Dryopteridaceae).
Geiger, Jennifer Marie Ott.

Origin and diversification of Hawaiian Dryopteris (Dryopteridaceae). - 127 p.

Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3034.

Thesis (Ph.D.)--University of Colorado at Boulder, 2003.

This dissertation research focussed on the molecular systematics, historical biogeography, and genetic differentiation of Hawaiian members of the fern genus Dryopteris Adans. (Dryopteridaceae). In Chapter One I provide an introduction to the Hawaiian Islands and the flora of Hawaii. There are high levels of endemism of both flowering plants and pteridophytes in Hawaii. Pteridophytes comprise one fifth of the vascular plant flora of Hawaii and are relatively understudied compared to flowering plants. In Chapter Two I discuss the molecular systematics and historical biogeography of Hawaiian Dryopteris. All but one of the Dryopteris species in Hawaii are endemic. Phylogenetic analyses based on chloroplast DNA data strongly suggested that Dryopteris in Hawaii is not monophyletic and that there have been at least five separate colonizations of Hawaii by different species of Dryopteris. This pattern is much different than has been hypothesized for many groups of angiosperms in Hawaii. In Chapter Three I present evidence, based on chloroplast DNA analyses of a subset of Dryopteris species, that current subgeneric and sectional classifications of the genus Dryopteris do not accurately reflect phylogenetic history. In light of these analyses, classifications within the genus should be reassessed. I discuss genetic differentiation among five of the eight members of the most taxonomically contentious group of Hawaiian Dryopteris in Chapter Four. The analyses based on Inter Simple Sequence Repeats (ISSRs) indicated there are two genetically distinct groups within this so called "glabra group." Contentious taxa that have been considered both species and varieties by different workers were not genetically differentiated by this method. In Chapter Five I present a preliminary investigation of the utility of outline-based morphometrics and eigenshape analysis for discriminating among taxa based on leaf shape variation. The same five glabra group taxa analyzed in Chapter Four were used. Outline-based morphometric analyses appear to be useful tools for discriminating taxa. The same taxa that were genetically separated were also morphologically separated. In Chapter Six I summarize the main findings from each chapter of the dissertation and discuss the conservation implications of my research.Subjects--Topical Terms:

1017825
Biology, Botany.

Origin and diversification of Hawaiian Dryopteris (Dryopteridaceae).
LDR:03175nmm 2200265 4500 001 1861773
005 20041117065606.5
008 130614s2003 eng d
035 $a (UnM)AAI3096800
035 $a AAI3096800
040 $a UnM $c UnM
100 1 $a Geiger, Jennifer Marie Ott. $3 1949355
245 1 0 $a Origin and diversification of Hawaiian Dryopteris (Dryopteridaceae).
300 $a 127 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3034.
500 $a Director: Tom A. Ranker.
502 $a Thesis (Ph.D.)--University of Colorado at Boulder, 2003.
520 $a This dissertation research focussed on the molecular systematics, historical biogeography, and genetic differentiation of Hawaiian members of the fern genus Dryopteris Adans. (Dryopteridaceae). In Chapter One I provide an introduction to the Hawaiian Islands and the flora of Hawaii. There are high levels of endemism of both flowering plants and pteridophytes in Hawaii. Pteridophytes comprise one fifth of the vascular plant flora of Hawaii and are relatively understudied compared to flowering plants. In Chapter Two I discuss the molecular systematics and historical biogeography of Hawaiian Dryopteris. All but one of the Dryopteris species in Hawaii are endemic. Phylogenetic analyses based on chloroplast DNA data strongly suggested that Dryopteris in Hawaii is not monophyletic and that there have been at least five separate colonizations of Hawaii by different species of Dryopteris. This pattern is much different than has been hypothesized for many groups of angiosperms in Hawaii. In Chapter Three I present evidence, based on chloroplast DNA analyses of a subset of Dryopteris species, that current subgeneric and sectional classifications of the genus Dryopteris do not accurately reflect phylogenetic history. In light of these analyses, classifications within the genus should be reassessed. I discuss genetic differentiation among five of the eight members of the most taxonomically contentious group of Hawaiian Dryopteris in Chapter Four. The analyses based on Inter Simple Sequence Repeats (ISSRs) indicated there are two genetically distinct groups within this so called "glabra group." Contentious taxa that have been considered both species and varieties by different workers were not genetically differentiated by this method. In Chapter Five I present a preliminary investigation of the utility of outline-based morphometrics and eigenshape analysis for discriminating among taxa based on leaf shape variation. The same five glabra group taxa analyzed in Chapter Four were used. Outline-based morphometric analyses appear to be useful tools for discriminating taxa. The same taxa that were genetically separated were also morphologically separated. In Chapter Six I summarize the main findings from each chapter of the dissertation and discuss the conservation implications of my research.
590 $a School code: 0051.
650 4 $a Biology, Botany. $3 1017825
650 4 $a Biology, Molecular. $3 1017719
690 $a 0309
690 $a 0307
710 2 0 $a University of Colorado at Boulder. $3 1019435
773 0 $t Dissertation Abstracts International $g 64-07B.
790 1 0 $a Ranker, Tom A., $e advisor
790 $a 0051
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3096800