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

Revisiting the Cambrian Burgess Shal...

Nanglu, Karma.

Linked to FindBook

Google Book

Amazon

博客來

Revisiting the Cambrian Burgess Shale Palaeocommunity in Light of New Field Discoveries from Marble Canyon, Kootenay National Park, British Columbia.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Revisiting the Cambrian Burgess Shale Palaeocommunity in Light of New Field Discoveries from Marble Canyon, Kootenay National Park, British Columbia./
Author:	Nanglu, Karma.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
Description:	325 p.
Notes:	Source: Dissertations Abstracts International, Volume: 80-10, Section: B.
Contained By:	Dissertations Abstracts International80-10B.
Subject:	Ecology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13421332
ISBN:	9781392015742

Revisiting the Cambrian Burgess Shale Palaeocommunity in Light of New Field Discoveries from Marble Canyon, Kootenay National Park, British Columbia.
Nanglu, Karma.

Revisiting the Cambrian Burgess Shale Palaeocommunity in Light of New Field Discoveries from Marble Canyon, Kootenay National Park, British Columbia. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 325 p.

Source: Dissertations Abstracts International, Volume: 80-10, Section: B.

Thesis (Ph.D.)--University of Toronto (Canada), 2019.

This item must not be sold to any third party vendors.

The 508-million-year-old Burgess Shale (British Columbia) is among the most important fossil localities in the world as it provides a direct window into the Cambrian Explosion, the phenomenon whereby most metazoan groups appeared rapidly in the fossil record for the first time. For over 100 years, Burgess Shale fossils have provided unique insights into the early evolutionary history of animal life, but a holistic description of the community ecology of the Burgess Shale has remained elusive. This dissertation aims to reinvestigate the Burgess Shale paleocommunity in light of the recently discovered Marble Canyon fossil site in Kootenay National Park, integrating this new dataset with those from the type areas in Yoho National Park, 40km to the northwest (Walcott Quarry, Raymond Quarry, and Tulip Beds). The first three chapters of this dissertation focus on the organismal level. An experimental decay study (Chapter 1) provides a framework for the interpretation of taphonomic bias in community reconstructions. The redescription of three enigmatic Cambrian taxa (Chapters 2 and 3) provide novel phylogenetic and ecological information for understanding the patterns of diversity and niche structure at Marble Canyon. The community analysis (Chapter 4) represents the largest quantitative study of the Burgess Shale to date. Patterns of faunal stasis between most adjacent bedding assemblages followed by periodic variations in abundance and species identity are found at both Marble Canyon and Walcott Quarry, the two best-studied sites with the finest level of stratigraphic/temporal data. Across the entire Burgess Shale paleocommunity, major shifts in representative taxonomic groups and ecological modes occur between major localities. The results of this work suggest that the Burgess Shale as a paleocommunity was highly heterogeneous in both its taxonomic and ecological composition. Shifting abiotic and environmental variables are determined to be more significant in the long-term structuring of Burgess Shale communities than species interactions such as predation, which was previously considered paramount.

ISBN: 9781392015742Subjects--Topical Terms:

516476
Ecology.

Revisiting the Cambrian Burgess Shale Palaeocommunity in Light of New Field Discoveries from Marble Canyon, Kootenay National Park, British Columbia.
LDR:03310nmm a2200337 4500 001 2207636
005 20190920102351.5
008 201008s2019 ||||||||||||||||| ||eng d
020 $a 9781392015742
035 $a (MiAaPQ)AAI13421332
035 $a (MiAaPQ)toronto:18801
035 $a AAI13421332
040 $a MiAaPQ $c MiAaPQ
100 1 $a Nanglu, Karma. $3 3434624
245 1 0 $a Revisiting the Cambrian Burgess Shale Palaeocommunity in Light of New Field Discoveries from Marble Canyon, Kootenay National Park, British Columbia.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 325 p.
500 $a Source: Dissertations Abstracts International, Volume: 80-10, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Caron, Jean-Bernard.
502 $a Thesis (Ph.D.)--University of Toronto (Canada), 2019.
506 $a This item must not be sold to any third party vendors.
520 $a The 508-million-year-old Burgess Shale (British Columbia) is among the most important fossil localities in the world as it provides a direct window into the Cambrian Explosion, the phenomenon whereby most metazoan groups appeared rapidly in the fossil record for the first time. For over 100 years, Burgess Shale fossils have provided unique insights into the early evolutionary history of animal life, but a holistic description of the community ecology of the Burgess Shale has remained elusive. This dissertation aims to reinvestigate the Burgess Shale paleocommunity in light of the recently discovered Marble Canyon fossil site in Kootenay National Park, integrating this new dataset with those from the type areas in Yoho National Park, 40km to the northwest (Walcott Quarry, Raymond Quarry, and Tulip Beds). The first three chapters of this dissertation focus on the organismal level. An experimental decay study (Chapter 1) provides a framework for the interpretation of taphonomic bias in community reconstructions. The redescription of three enigmatic Cambrian taxa (Chapters 2 and 3) provide novel phylogenetic and ecological information for understanding the patterns of diversity and niche structure at Marble Canyon. The community analysis (Chapter 4) represents the largest quantitative study of the Burgess Shale to date. Patterns of faunal stasis between most adjacent bedding assemblages followed by periodic variations in abundance and species identity are found at both Marble Canyon and Walcott Quarry, the two best-studied sites with the finest level of stratigraphic/temporal data. Across the entire Burgess Shale paleocommunity, major shifts in representative taxonomic groups and ecological modes occur between major localities. The results of this work suggest that the Burgess Shale as a paleocommunity was highly heterogeneous in both its taxonomic and ecological composition. Shifting abiotic and environmental variables are determined to be more significant in the long-term structuring of Burgess Shale communities than species interactions such as predation, which was previously considered paramount.
590 $a School code: 0779.
650 4 $a Ecology. $3 516476
650 4 $a Evolution and Development. $3 3422373
650 4 $a Paleontology. $3 518862
690 $a 0329
690 $a 0412
690 $a 0418
710 2 $a University of Toronto (Canada). $b Ecology and Evolutionary Biology. $3 3190014
773 0 $t Dissertations Abstracts International $g 80-10B.
790 $a 0779
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13421332