Multi-decadal changes in the megabenthos of the Bay of Fundy: The effects of fishing

doi:10.1016/j.seares.2007.04.001

	Multi-decadal changes in the megabenthos of the Bay of Fundy: The effects of fishing
	Kenchington, Ellen L.; Kenchington, Trevor J.; Henry, Lea-Anne ; Fuller, Susanna ; Gonzalez, Patricia
刊名	JOURNAL OF SEA RESEARCH
	2007-10
卷号	58 期号:3 页码:220-240
关键词	marine benthos fishing impacts biological traits long-term change benthic communities
ISSN号	1385-1101
DOI	10.1016/j.seares.2007.04.001
英文摘要	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.
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000250647200005
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/4551]
专题	自然资源部第一海洋研究所
作者单位	1.Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada; 2.Dunstaffnage Marine Res Lab, Scottish Assoc Marine Sci, Oban PA37 1QA, Argyll, Scotland; 3.Dalhousie Univ, Dept Biol, Halifax, NS B3H 4J1, Canada
推荐引用方式 GB/T 7714	Kenchington, Ellen L.,Kenchington, Trevor J.,Henry, Lea-Anne,et al. Multi-decadal changes in the megabenthos of the Bay of Fundy: The effects of fishing[J]. JOURNAL OF SEA RESEARCH,2007,58(3):220-240.
APA	Kenchington, Ellen L.,Kenchington, Trevor J.,Henry, Lea-Anne,Fuller, Susanna,&Gonzalez, Patricia.(2007).Multi-decadal changes in the megabenthos of the Bay of Fundy: The effects of fishing.JOURNAL OF SEA RESEARCH,58(3),220-240.
MLA	Kenchington, Ellen L.,et al."Multi-decadal changes in the megabenthos of the Bay of Fundy: The effects of fishing".JOURNAL OF SEA RESEARCH 58.3(2007):220-240.