Non-Indigenous Species Dynamics in Time and Space within the Coastal Waters of The Netherlands

Information on temporal and spatial trends with regard to the introduction of non-indigenous species (NIS) is often sparsely available. These trends may potentially help improve the design and focus of monitoring programs, give insights into new pathways and hotspots, and facilitate horizon scanning...

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Bibliographic Details
Published in:Diversity
Main Authors: Gittenberger, Arjan, Rensing, Marjolein, Faasse, Marco, van Walraven, Lodewijk, Smolders, Sander, Keeler Perez, Helena, Gittenberger, Edmund
Format: Article in Journal/Newspaper
Language:English
Published: 2023
Subjects:
Aurelia coerulea
NIS detection network
Notocomplana koreana
Prosthiostomum wagurensis
The Netherlands
cryptic species
flatworms
likely vectors
marine invasive species
monitoring effort
origins
stepping stones
temporal trends
Pacific oyster
Stepping Stones
Online Access:https://research.wur.nl/en/publications/non-indigenous-species-dynamics-in-time-and-space-within-the-coas
https://doi.org/10.3390/d15060719
Description
Summary:Information on temporal and spatial trends with regard to the introduction of non-indigenous species (NIS) is often sparsely available. These trends may potentially help improve the design and focus of monitoring programs, give insights into new pathways and hotspots, and facilitate horizon scanning. We provide an overview of 215 marine and brackish water NIS recorded in The Netherlands. Temporal trends over the most recent three decades for taxonomic groups, species origin, introduction vectors, and water systems were analysed. We attempt to explain the observed patterns and discuss factors that hamper their explanation. A shift in the region of origin from Pacific to W Atlantic can potentially be linked to legislation prohibiting Pacific oyster imports, whereas a subsequent shift backwards cannot. Case studies illustrate that NIS may not be first detected in the water systems where they were originally introduced. Additionally, it is shown that changes in allegedly native species’ distribution or seasonal pattern should be linked to an introduced cryptic NIS instead. We also discuss the shortcomings of monitoring programs that were originally not focused on NIS, the importance of naturalists’ observations, and the added value of a more recent network that is focused on NIS detection in the coastal waters of The Netherlands.

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