BATHYMETRIC PATTERNS OF MORPHOLOGICAL DISPARITY IN DEEP-SEA GASTROPODS FROM THE WESTERN NORTH ATLANTIC BASIN
Understanding patterns of species richness requires knowledge of the individual roles species play in community structure. Here, I use gastropod shells as a source of information about both their ecological and their evolutionary functions in generating bathymetric gradients of diversity. Specifical...
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The Society for the Study of Evolution
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ftbioone:10.1554/04-714 2023-07-30T04:05:18+02:00 BATHYMETRIC PATTERNS OF MORPHOLOGICAL DISPARITY IN DEEP-SEA GASTROPODS FROM THE WESTERN NORTH ATLANTIC BASIN Craig R. McClain Craig R. McClain world 2005-07-01 text/HTML https://doi.org/10.1554/04-714 en eng The Society for the Study of Evolution doi:10.1554/04-714 All rights reserved. https://doi.org/10.1554/04-714 Text 2005 ftbioone https://doi.org/10.1554/04-714 2023-07-09T09:27:50Z Understanding patterns of species richness requires knowledge of the individual roles species play in community structure. Here, I use gastropod shells as a source of information about both their ecological and their evolutionary functions in generating bathymetric gradients of diversity. Specifically, morphological disparity of shell architecture in deep-sea gastropods is evaluated over a depth gradient in the western North Atlantic by constructing an empirical morphospace based on an eigenshape analysis. Morphological disparity is quantified by calculating the centroid, total range, and dispersion of the morphospace at each station along the depth gradient. The results indicate that local faunas are drawn from a regional pool with the same variance but that average dissimilarity in forms reflects the number of species in the sample. The range of the morphospace at local scales is also less than at regional scales, resulting from the variability of the morphospace centroid over depth. Although the position of the morphospace changes with depth, morphological disparity remains unaffected. Despite the lack of bathymetric patterns in variance, patterns in nearest neighbor distance persist. The findings suggest the importance of interacting ecological and evolutionary processes at varying spatiotemporal scales for both morphological disparity and species richness. Text North Atlantic BioOne Online Journals Evolution 59 7 1492 |
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Open Polar |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
Understanding patterns of species richness requires knowledge of the individual roles species play in community structure. Here, I use gastropod shells as a source of information about both their ecological and their evolutionary functions in generating bathymetric gradients of diversity. Specifically, morphological disparity of shell architecture in deep-sea gastropods is evaluated over a depth gradient in the western North Atlantic by constructing an empirical morphospace based on an eigenshape analysis. Morphological disparity is quantified by calculating the centroid, total range, and dispersion of the morphospace at each station along the depth gradient. The results indicate that local faunas are drawn from a regional pool with the same variance but that average dissimilarity in forms reflects the number of species in the sample. The range of the morphospace at local scales is also less than at regional scales, resulting from the variability of the morphospace centroid over depth. Although the position of the morphospace changes with depth, morphological disparity remains unaffected. Despite the lack of bathymetric patterns in variance, patterns in nearest neighbor distance persist. The findings suggest the importance of interacting ecological and evolutionary processes at varying spatiotemporal scales for both morphological disparity and species richness. |
author2 |
Craig R. McClain |
format |
Text |
author |
Craig R. McClain |
spellingShingle |
Craig R. McClain BATHYMETRIC PATTERNS OF MORPHOLOGICAL DISPARITY IN DEEP-SEA GASTROPODS FROM THE WESTERN NORTH ATLANTIC BASIN |
author_facet |
Craig R. McClain |
author_sort |
Craig R. McClain |
title |
BATHYMETRIC PATTERNS OF MORPHOLOGICAL DISPARITY IN DEEP-SEA GASTROPODS FROM THE WESTERN NORTH ATLANTIC BASIN |
title_short |
BATHYMETRIC PATTERNS OF MORPHOLOGICAL DISPARITY IN DEEP-SEA GASTROPODS FROM THE WESTERN NORTH ATLANTIC BASIN |
title_full |
BATHYMETRIC PATTERNS OF MORPHOLOGICAL DISPARITY IN DEEP-SEA GASTROPODS FROM THE WESTERN NORTH ATLANTIC BASIN |
title_fullStr |
BATHYMETRIC PATTERNS OF MORPHOLOGICAL DISPARITY IN DEEP-SEA GASTROPODS FROM THE WESTERN NORTH ATLANTIC BASIN |
title_full_unstemmed |
BATHYMETRIC PATTERNS OF MORPHOLOGICAL DISPARITY IN DEEP-SEA GASTROPODS FROM THE WESTERN NORTH ATLANTIC BASIN |
title_sort |
bathymetric patterns of morphological disparity in deep-sea gastropods from the western north atlantic basin |
publisher |
The Society for the Study of Evolution |
publishDate |
2005 |
url |
https://doi.org/10.1554/04-714 |
op_coverage |
world |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
https://doi.org/10.1554/04-714 |
op_relation |
doi:10.1554/04-714 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1554/04-714 |
container_title |
Evolution |
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59 |
container_issue |
7 |
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1492 |
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1772817115429994496 |