Occurrence and assemblage composition of intertidal non-native species may be influenced by shipping patterns and artificial structures

Habitat modification coupled with the spread of non-native species (NNS) are among the top threats to marine biodiversity globally. Species are known to be transported to new locations via international shipping and secondarily spread via regional vessels and artificial structures. Rapid Assessment...

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Bibliographic Details
Published in:Marine pollution bulletin 2020-05, Vol.154, p.111082-111082, Article 111082
Main Authors: O'Shaughnessy, Kathryn A., Hawkins, Stephen J., Yunnie, Anna L.E., Hanley, Mick E., Lunt, Paul, Thompson, Richard C., Firth, Louise B.
Format: Article
Language:English
Subjects:
Assessments
Biodiversity
Biological invasion
Composition
Habitats
Harbours
Indigenous species
Intertidal environment
Introduced species
Invasive species
Microhabitat
Microhabitats
Native organisms
Native species
Non-indigenous species
Nonnative species
Ocean sprawl
Quantitative analysis
Rapid Assessment Surveys
Regions
Rocky shores
Shipping
Shores
Structures
Surveys
Tidal pools
Underwater habitats
Vessels
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Summary:Habitat modification coupled with the spread of non-native species (NNS) are among the top threats to marine biodiversity globally. Species are known to be transported to new locations via international shipping and secondarily spread via regional vessels and artificial structures. Rapid Assessment Surveys (RAS) combining quantitative and semi-quantitative methods compared NNS richness and assemblage composition on intertidal natural rocky shores and artificial structures in harbours in different regions along the south coast of England. Quantitative data showed that artificial habitats supported higher richness than natural habitats, while semi-quantitative data found no difference in richness among habitat types. This result was attributed to additional species found in rock pools during searches of complex microhabitats in natural habitats. Assemblages on artificial structures differed among regions, with regions and harbours with greater numbers of vessels supporting greater richness. Results highlight the importance of shipping and artificial structures for NNS introduction and spread. •Natural and artificial habitats supported different NNS assemblage compositions.•NNS richness in artificial and natural habitats differed based on sampling method.•The Central region of the south coast of England supported the most shipping traffic.•The Central region of the south coast of England supported the greatest NNS richness.•NNS assemblage composition differed among regions.
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2020.111082