NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE
One of the most important tenants in geology is that the present is the key to the past, but it can also be said that the past is the key to the present. The five great extinction events are some of the key events that can help us to understand how changes in climate and sea chemistry can cause grea...
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ftunivmontana:oai:scholarworks.umt.edu:etd-2422 2023-07-16T04:00:18+02:00 NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE Shepherd, Hannah Morgan Elliott 2013-01-01T08:00:00Z application/pdf https://scholarworks.umt.edu/etd/1403 https://scholarworks.umt.edu/context/etd/article/2422/viewcontent/Shepherd2013.pdf unknown University of Montana https://scholarworks.umt.edu/etd/1403 https://scholarworks.umt.edu/context/etd/article/2422/viewcontent/Shepherd2013.pdf ©2013 Hannah Morgan Elliott Shepherd Graduate Student Theses, Dissertations, & Professional Papers Bivalves Coral Exctinction Jurassic Triassic thesis 2013 ftunivmontana 2023-06-27T22:40:04Z One of the most important tenants in geology is that the present is the key to the past, but it can also be said that the past is the key to the present. The five great extinction events are some of the key events that can help us to understand how changes in climate and sea chemistry can cause great changes in the ecology of our planet. Today the increase in atmospheric CO2 is causing ocean acidification, which has also been proposed as part of the system that caused the end-Triassic mass extinction. Ocean acidification can be greatly detrimental to the skeletal structures of marine invertebrate such as reef building corals and bivalves. During the Norian and Rhaetian (Late Triassic), corals and bivalves had high diversity and abundance, but like many organisms involved in the mass extinction, quickly disappeared at the end of the Triassic. In the early Jurassic, very few surviving species of corals can be found, and almost no reefs. If this ‘reef gap’ was caused by a change in ocean chemistry, then how did these few species of corals survive? Were bivalves also affected by the changes? On Vancouver Island, rock units containing corals and bivalves can be found that represent both Norian and Rhaetian time intervals, but early Jurassic sedimentary units are found rarely, if ever. This creates a difficulty in looking for patterns in changes that happened after the mass extinction, but does allow for analysis of what reef communities looked like shortly before the end of the Triassic. In addition, by building upon data from the Paleobiology Database, changes in the global reef communities after the end-Triassic mass extinction can be examined. Thesis Ocean acidification University of Montana: ScholarWorks |
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University of Montana: ScholarWorks |
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ftunivmontana |
language |
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topic |
Bivalves Coral Exctinction Jurassic Triassic |
spellingShingle |
Bivalves Coral Exctinction Jurassic Triassic Shepherd, Hannah Morgan Elliott NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE |
topic_facet |
Bivalves Coral Exctinction Jurassic Triassic |
description |
One of the most important tenants in geology is that the present is the key to the past, but it can also be said that the past is the key to the present. The five great extinction events are some of the key events that can help us to understand how changes in climate and sea chemistry can cause great changes in the ecology of our planet. Today the increase in atmospheric CO2 is causing ocean acidification, which has also been proposed as part of the system that caused the end-Triassic mass extinction. Ocean acidification can be greatly detrimental to the skeletal structures of marine invertebrate such as reef building corals and bivalves. During the Norian and Rhaetian (Late Triassic), corals and bivalves had high diversity and abundance, but like many organisms involved in the mass extinction, quickly disappeared at the end of the Triassic. In the early Jurassic, very few surviving species of corals can be found, and almost no reefs. If this ‘reef gap’ was caused by a change in ocean chemistry, then how did these few species of corals survive? Were bivalves also affected by the changes? On Vancouver Island, rock units containing corals and bivalves can be found that represent both Norian and Rhaetian time intervals, but early Jurassic sedimentary units are found rarely, if ever. This creates a difficulty in looking for patterns in changes that happened after the mass extinction, but does allow for analysis of what reef communities looked like shortly before the end of the Triassic. In addition, by building upon data from the Paleobiology Database, changes in the global reef communities after the end-Triassic mass extinction can be examined. |
format |
Thesis |
author |
Shepherd, Hannah Morgan Elliott |
author_facet |
Shepherd, Hannah Morgan Elliott |
author_sort |
Shepherd, Hannah Morgan Elliott |
title |
NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE |
title_short |
NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE |
title_full |
NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE |
title_fullStr |
NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE |
title_full_unstemmed |
NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE |
title_sort |
nearing the end: reef building corals and bivalves in the late triassic and comparing corals and bivalves before and after the end-triassic mass extinction using a taxonomic database |
publisher |
University of Montana |
publishDate |
2013 |
url |
https://scholarworks.umt.edu/etd/1403 https://scholarworks.umt.edu/context/etd/article/2422/viewcontent/Shepherd2013.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Graduate Student Theses, Dissertations, & Professional Papers |
op_relation |
https://scholarworks.umt.edu/etd/1403 https://scholarworks.umt.edu/context/etd/article/2422/viewcontent/Shepherd2013.pdf |
op_rights |
©2013 Hannah Morgan Elliott Shepherd |
_version_ |
1771548927474008064 |