Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic
While biodiversity patterns of Atlantic deep-sea bivalves and gastropods have served as model taxa for setting global latitudinal and bathymetric hypotheses, less is known on abyssal, amphi-Atlantic molluscan assemblage compositions. The Vema-TRANSIT expedition sampled 17 stations in the Vema Fractu...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/516177/ https://nora.nerc.ac.uk/id/eprint/516177/1/Diversity%20of%20macrofaunal%20Mollusca%20of%20the%20abyssal%20Vema%20Fracture%20Zone%20AAM.pdf http://www.sciencedirect.com/science/article/pii/S0967064516303812 |
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ftnerc:oai:nora.nerc.ac.uk:516177 2023-05-15T17:35:23+02:00 Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic Linse, Katrin Schwabe, Enrico 2018-02 text http://nora.nerc.ac.uk/id/eprint/516177/ https://nora.nerc.ac.uk/id/eprint/516177/1/Diversity%20of%20macrofaunal%20Mollusca%20of%20the%20abyssal%20Vema%20Fracture%20Zone%20AAM.pdf http://www.sciencedirect.com/science/article/pii/S0967064516303812 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/516177/1/Diversity%20of%20macrofaunal%20Mollusca%20of%20the%20abyssal%20Vema%20Fracture%20Zone%20AAM.pdf Linse, Katrin orcid:0000-0003-3477-3047 Schwabe, Enrico. 2018 Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic. Deep-Sea Research Part II: Topical Studies in Oceanography, 148. 45-53. https://doi.org/10.1016/j.dsr2.2017.02.001 <https://doi.org/10.1016/j.dsr2.2017.02.001> Publication - Article PeerReviewed 2018 ftnerc https://doi.org/10.1016/j.dsr2.2017.02.001 2023-02-04T19:44:28Z While biodiversity patterns of Atlantic deep-sea bivalves and gastropods have served as model taxa for setting global latitudinal and bathymetric hypotheses, less is known on abyssal, amphi-Atlantic molluscan assemblage compositions. The Vema-TRANSIT expedition sampled 17 stations in the Vema Fracture Zone (VFZ) and the Puerto Rico Trench (PRT) by epibenthic sledge. These samples comprised a total of 1333 specimens and 64 morphospecies of the classes Caudofoveata (7 species), Solenogastres (7 spp.), Bivalvia (22 spp.), Gastropoda (24 spp.), and Scaphopoda (4 spp.) while Cephalopoda, Monoplacophora and Polyplacophora were absent. The majority of species was rare with 21 uniques (32.8% of all species) and 10 duplicates (15.6% of all species) and of these 15 (48% of rare/23.4% of all species) morphospecies were singletons and 8 (25.8% of rare/12.5% of all species) morphospecies were doubletons. Overall bivalves (686 specimens) were most abundant, followed by scaphopods (314 spec.), while solenogastres (180 spec.), caudofoveates (86 spec.) and gastropods (67 spec.) were less abundant. The abyssal macro-molluscan species composition did not vary significantly between the eastern and western Atlantic sides of the VFZ while abundances standardized to 1000 m2 trawled area were higher on the eastern side. The abyssal PRT stations resembled the VFZ ones in species composition and abundances, in the latter the eastern VFZ. The hadal PRT differed in species composition from the abyssal VFZ and PRT and abundances were similarly low like the western VFZ. The Mid-Atlantic Ridge appeared not to be a barrier for the dispersal of the mostly lecitotrophic or plankotrophic larval stages of the reported molluscan species in this study. Article in Journal/Newspaper North Atlantic Natural Environment Research Council: NERC Open Research Archive Mid-Atlantic Ridge Deep Sea Research Part II: Topical Studies in Oceanography 148 45 53 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
While biodiversity patterns of Atlantic deep-sea bivalves and gastropods have served as model taxa for setting global latitudinal and bathymetric hypotheses, less is known on abyssal, amphi-Atlantic molluscan assemblage compositions. The Vema-TRANSIT expedition sampled 17 stations in the Vema Fracture Zone (VFZ) and the Puerto Rico Trench (PRT) by epibenthic sledge. These samples comprised a total of 1333 specimens and 64 morphospecies of the classes Caudofoveata (7 species), Solenogastres (7 spp.), Bivalvia (22 spp.), Gastropoda (24 spp.), and Scaphopoda (4 spp.) while Cephalopoda, Monoplacophora and Polyplacophora were absent. The majority of species was rare with 21 uniques (32.8% of all species) and 10 duplicates (15.6% of all species) and of these 15 (48% of rare/23.4% of all species) morphospecies were singletons and 8 (25.8% of rare/12.5% of all species) morphospecies were doubletons. Overall bivalves (686 specimens) were most abundant, followed by scaphopods (314 spec.), while solenogastres (180 spec.), caudofoveates (86 spec.) and gastropods (67 spec.) were less abundant. The abyssal macro-molluscan species composition did not vary significantly between the eastern and western Atlantic sides of the VFZ while abundances standardized to 1000 m2 trawled area were higher on the eastern side. The abyssal PRT stations resembled the VFZ ones in species composition and abundances, in the latter the eastern VFZ. The hadal PRT differed in species composition from the abyssal VFZ and PRT and abundances were similarly low like the western VFZ. The Mid-Atlantic Ridge appeared not to be a barrier for the dispersal of the mostly lecitotrophic or plankotrophic larval stages of the reported molluscan species in this study. |
format |
Article in Journal/Newspaper |
author |
Linse, Katrin Schwabe, Enrico |
spellingShingle |
Linse, Katrin Schwabe, Enrico Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic |
author_facet |
Linse, Katrin Schwabe, Enrico |
author_sort |
Linse, Katrin |
title |
Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic |
title_short |
Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic |
title_full |
Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic |
title_fullStr |
Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic |
title_full_unstemmed |
Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic |
title_sort |
diversity of macrofaunal mollusca of the abyssal vema fracture zone and hadal puerto rico trench, tropical north atlantic |
publisher |
Elsevier |
publishDate |
2018 |
url |
http://nora.nerc.ac.uk/id/eprint/516177/ https://nora.nerc.ac.uk/id/eprint/516177/1/Diversity%20of%20macrofaunal%20Mollusca%20of%20the%20abyssal%20Vema%20Fracture%20Zone%20AAM.pdf http://www.sciencedirect.com/science/article/pii/S0967064516303812 |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/516177/1/Diversity%20of%20macrofaunal%20Mollusca%20of%20the%20abyssal%20Vema%20Fracture%20Zone%20AAM.pdf Linse, Katrin orcid:0000-0003-3477-3047 Schwabe, Enrico. 2018 Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, tropical North Atlantic. Deep-Sea Research Part II: Topical Studies in Oceanography, 148. 45-53. https://doi.org/10.1016/j.dsr2.2017.02.001 <https://doi.org/10.1016/j.dsr2.2017.02.001> |
op_doi |
https://doi.org/10.1016/j.dsr2.2017.02.001 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
148 |
container_start_page |
45 |
op_container_end_page |
53 |
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1766134534650200064 |