Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers?
Among the increasing number of species introduced to coastal regions by man, only a few are able to establish themselves and spread in their new environments. We will show that the Pacific oyster (Crassostrea gigas) took 17 years before a large population of several million oysters became establishe...
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ftawi:oai:epic.awi.de:11164 2023-09-05T13:18:58+02:00 Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers? Diederich, Susanne Nehls, G. van Beusekom, Justus Reise, Karsten 2005 https://epic.awi.de/id/eprint/11164/ https://doi.org/10.1007/s10152-004-0195-1 https://hdl.handle.net/10013/epic.21624 unknown Diederich, S. , Nehls, G. , van Beusekom, J. and Reise, K. orcid:0000-0001-5003-6544 (2005) Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers? , Helgoland Marine Research, 59 (2), pp. 97-106 . doi:10.1007/s10152-004-0195-1 <https://doi.org/10.1007/s10152-004-0195-1> , hdl:10013/epic.21624 EPIC3Helgoland Marine Research, 59(2), pp. 97-106, ISBN: 1438-387X (Paper) 14 Article isiRev 2005 ftawi https://doi.org/10.1007/s10152-004-0195-1 2023-08-22T19:49:09Z Among the increasing number of species introduced to coastal regions by man, only a few are able to establish themselves and spread in their new environments. We will show that the Pacific oyster (Crassostrea gigas) took 17 years before a large population of several million oysters became established on natural mussel beds in the vicinity of an oyster farm near the island of Sylt (northern Wadden Sea, eastern North Sea). The first oyster, which had dispersed as a larva and settled on a mussel bed, was discovered 5 years after oyster farming had commenced. Data on abundance and size-frequency distribution of oysters on intertidal mussel beds around the island indicate that recruitment was patchy and occurred only in 6 out of 18 years. Significant proportions of these cohorts survived for at least 5 years. The population slowly expanded its range from intertidal to subtidal locations as well as from Sylt north- and southwards along the coastline. Abundances of more than 300 oysters m 2 on mussel beds were observed in 2003, only after two consecutive spatfalls in 2001 and 2002. Analyses of mean monthly water temperatures indicate that recruitment coincided with above-average temperatures in July and August when spawning and planktonic dispersal occurs. We conclude that the further invasion of C. gigas in the northern Wadden Sea will depend on high late-summer water temperatures.Keywords Crassostrea gigas, Introduced species, Recruitment, Water temperature, Wadden Sea Article in Journal/Newspaper Crassostrea gigas Pacific oyster Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Pacific Helgoland Marine Research 59 2 97 106 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Among the increasing number of species introduced to coastal regions by man, only a few are able to establish themselves and spread in their new environments. We will show that the Pacific oyster (Crassostrea gigas) took 17 years before a large population of several million oysters became established on natural mussel beds in the vicinity of an oyster farm near the island of Sylt (northern Wadden Sea, eastern North Sea). The first oyster, which had dispersed as a larva and settled on a mussel bed, was discovered 5 years after oyster farming had commenced. Data on abundance and size-frequency distribution of oysters on intertidal mussel beds around the island indicate that recruitment was patchy and occurred only in 6 out of 18 years. Significant proportions of these cohorts survived for at least 5 years. The population slowly expanded its range from intertidal to subtidal locations as well as from Sylt north- and southwards along the coastline. Abundances of more than 300 oysters m 2 on mussel beds were observed in 2003, only after two consecutive spatfalls in 2001 and 2002. Analyses of mean monthly water temperatures indicate that recruitment coincided with above-average temperatures in July and August when spawning and planktonic dispersal occurs. We conclude that the further invasion of C. gigas in the northern Wadden Sea will depend on high late-summer water temperatures.Keywords Crassostrea gigas, Introduced species, Recruitment, Water temperature, Wadden Sea |
format |
Article in Journal/Newspaper |
author |
Diederich, Susanne Nehls, G. van Beusekom, Justus Reise, Karsten |
spellingShingle |
Diederich, Susanne Nehls, G. van Beusekom, Justus Reise, Karsten Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers? |
author_facet |
Diederich, Susanne Nehls, G. van Beusekom, Justus Reise, Karsten |
author_sort |
Diederich, Susanne |
title |
Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers? |
title_short |
Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers? |
title_full |
Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers? |
title_fullStr |
Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers? |
title_full_unstemmed |
Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers? |
title_sort |
introduced pacific oysters (crassostrea gigas) in the northern wadden sea: invasion accelerated by warm summers? |
publishDate |
2005 |
url |
https://epic.awi.de/id/eprint/11164/ https://doi.org/10.1007/s10152-004-0195-1 https://hdl.handle.net/10013/epic.21624 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
EPIC3Helgoland Marine Research, 59(2), pp. 97-106, ISBN: 1438-387X (Paper) 14 |
op_relation |
Diederich, S. , Nehls, G. , van Beusekom, J. and Reise, K. orcid:0000-0001-5003-6544 (2005) Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: Invasion accelerated by warm summers? , Helgoland Marine Research, 59 (2), pp. 97-106 . doi:10.1007/s10152-004-0195-1 <https://doi.org/10.1007/s10152-004-0195-1> , hdl:10013/epic.21624 |
op_doi |
https://doi.org/10.1007/s10152-004-0195-1 |
container_title |
Helgoland Marine Research |
container_volume |
59 |
container_issue |
2 |
container_start_page |
97 |
op_container_end_page |
106 |
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1776199809794834432 |