Multi-decadal changes in the megabenthos of the Bay of Fundy:The effects of fishing
Analysis of presence / absence records from two comparable megabenthic surveys of scallop grounds in the Bay of Fundy, Canada, in 1966-67 and 1997 showed profound change over three decades. There were no indications that any species were lost and the average number of taxa per station remained stead...
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ftuhipublicatio:oai:pure.atira.dk:publications/89a6e35c-cbfa-4495-ae66-849f35c00878 2024-02-04T10:02:06+01:00 Multi-decadal changes in the megabenthos of the Bay of Fundy:The effects of fishing Kenchington, Ellen Kenchington, Trevor Henry, LeaAnne Fuller, S Gonzalez, P 2007 https://pure.uhi.ac.uk/en/publications/89a6e35c-cbfa-4495-ae66-849f35c00878 eng eng info:eu-repo/semantics/restrictedAccess Kenchington , E , Kenchington , T , Henry , L , Fuller , S & Gonzalez , P 2007 , ' Multi-decadal changes in the megabenthos of the Bay of Fundy : The effects of fishing ' , J SEA RES , vol. 58 , no. 3 , pp. 220-240 . NORTH-SEA SANDY BOTTOM ECOSYSTEM SUBTIDAL WADDEN SEA BENTHIC INVERTEBRATE COMMUNITIES MUSSEL MODIOLUS-MODIOLUS Marine & Freshwater Biology MACROFAUNA STANDING STOCK Oceanography LONG-TERM CHANGES SOUTHERN NEW-ZEALAND COMMERCIAL SCALLOP GROUNDS CO-INERTIA ANALYSIS article 2007 ftuhipublicatio 2024-01-11T23:20:55Z Analysis of presence / absence records from two comparable megabenthic surveys of scallop grounds in the Bay of Fundy, Canada, in 1966-67 and 1997 showed profound change over three decades. There were no indications that any species were lost and the average number of taxa per station remained steady. However, spatial heterogeneities in the community were reduced and species composition changed significantly. Some taxa widespread in 1966-67 declined while others expanded, with frequencies of occurrence of individual taxa changing by up to 71%. The whelks Buccinum undatum and Colus spp., the bivalves Astarte spp. and Cylocardia borealis, the toad crabs Hyas spp., the sea urchin Strongylocentrotus droebachiensis and the brittle stars (Ophiurida) showed particular increases. Corresponding declines were seen in the boring sponges Cliona spp., the horse mussel Modiolus modiolus, the scallop Chlamys islandica. the fan worm Pseudopotamilla reniformis and the stalked tunicate Boltenia ovifera. Replacement of attached, fragile, epifaunal, filter-feeding taxa by a combination of motile scavengers, motile filter-feeders and robust, burrowing filter-feeders suggests that the primary cause of the temporal change was physical impacts by fishing gear, even though trawling and scallop dragging in the area were neither intense nor new developments. Secondary causes of change may have included other ecosystem effects of fishing (supply of discards and bait), a mass mortality of scallops and a range expansion of a bryozoan (Flustra foliacea). Crown Copyright (C) 2007 Published by Elsevier B.V. All rights reserved. Article in Journal/Newspaper Modiolus modiolus University of the Highlands and Islands: Research Database of UHI Canada New Zealand |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
NORTH-SEA SANDY BOTTOM ECOSYSTEM SUBTIDAL WADDEN SEA BENTHIC INVERTEBRATE COMMUNITIES MUSSEL MODIOLUS-MODIOLUS Marine & Freshwater Biology MACROFAUNA STANDING STOCK Oceanography LONG-TERM CHANGES SOUTHERN NEW-ZEALAND COMMERCIAL SCALLOP GROUNDS CO-INERTIA ANALYSIS |
spellingShingle |
NORTH-SEA SANDY BOTTOM ECOSYSTEM SUBTIDAL WADDEN SEA BENTHIC INVERTEBRATE COMMUNITIES MUSSEL MODIOLUS-MODIOLUS Marine & Freshwater Biology MACROFAUNA STANDING STOCK Oceanography LONG-TERM CHANGES SOUTHERN NEW-ZEALAND COMMERCIAL SCALLOP GROUNDS CO-INERTIA ANALYSIS Kenchington, Ellen Kenchington, Trevor Henry, LeaAnne Fuller, S Gonzalez, P Multi-decadal changes in the megabenthos of the Bay of Fundy:The effects of fishing |
topic_facet |
NORTH-SEA SANDY BOTTOM ECOSYSTEM SUBTIDAL WADDEN SEA BENTHIC INVERTEBRATE COMMUNITIES MUSSEL MODIOLUS-MODIOLUS Marine & Freshwater Biology MACROFAUNA STANDING STOCK Oceanography LONG-TERM CHANGES SOUTHERN NEW-ZEALAND COMMERCIAL SCALLOP GROUNDS CO-INERTIA ANALYSIS |
description |
Analysis of presence / absence records from two comparable megabenthic surveys of scallop grounds in the Bay of Fundy, Canada, in 1966-67 and 1997 showed profound change over three decades. There were no indications that any species were lost and the average number of taxa per station remained steady. However, spatial heterogeneities in the community were reduced and species composition changed significantly. Some taxa widespread in 1966-67 declined while others expanded, with frequencies of occurrence of individual taxa changing by up to 71%. The whelks Buccinum undatum and Colus spp., the bivalves Astarte spp. and Cylocardia borealis, the toad crabs Hyas spp., the sea urchin Strongylocentrotus droebachiensis and the brittle stars (Ophiurida) showed particular increases. Corresponding declines were seen in the boring sponges Cliona spp., the horse mussel Modiolus modiolus, the scallop Chlamys islandica. the fan worm Pseudopotamilla reniformis and the stalked tunicate Boltenia ovifera. Replacement of attached, fragile, epifaunal, filter-feeding taxa by a combination of motile scavengers, motile filter-feeders and robust, burrowing filter-feeders suggests that the primary cause of the temporal change was physical impacts by fishing gear, even though trawling and scallop dragging in the area were neither intense nor new developments. Secondary causes of change may have included other ecosystem effects of fishing (supply of discards and bait), a mass mortality of scallops and a range expansion of a bryozoan (Flustra foliacea). Crown Copyright (C) 2007 Published by Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Kenchington, Ellen Kenchington, Trevor Henry, LeaAnne Fuller, S Gonzalez, P |
author_facet |
Kenchington, Ellen Kenchington, Trevor Henry, LeaAnne Fuller, S Gonzalez, P |
author_sort |
Kenchington, Ellen |
title |
Multi-decadal changes in the megabenthos of the Bay of Fundy:The effects of fishing |
title_short |
Multi-decadal changes in the megabenthos of the Bay of Fundy:The effects of fishing |
title_full |
Multi-decadal changes in the megabenthos of the Bay of Fundy:The effects of fishing |
title_fullStr |
Multi-decadal changes in the megabenthos of the Bay of Fundy:The effects of fishing |
title_full_unstemmed |
Multi-decadal changes in the megabenthos of the Bay of Fundy:The effects of fishing |
title_sort |
multi-decadal changes in the megabenthos of the bay of fundy:the effects of fishing |
publishDate |
2007 |
url |
https://pure.uhi.ac.uk/en/publications/89a6e35c-cbfa-4495-ae66-849f35c00878 |
geographic |
Canada New Zealand |
geographic_facet |
Canada New Zealand |
genre |
Modiolus modiolus |
genre_facet |
Modiolus modiolus |
op_source |
Kenchington , E , Kenchington , T , Henry , L , Fuller , S & Gonzalez , P 2007 , ' Multi-decadal changes in the megabenthos of the Bay of Fundy : The effects of fishing ' , J SEA RES , vol. 58 , no. 3 , pp. 220-240 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1789968485107892224 |