Ocean current connectivity propelling the secondary spread of a marine invasive comb jelly across western Eurasia.

Jaspers, Cornelia , Huwer, Bastian, Antajan, Elvire, Hosia, Aino, Hinrichsen, Hans-Harald, Biastoch, Arne , Angel, Dror, Asmus, Ragnhild, Augustin, Christina, Bagheri, Siamak, Beggs, Steven E., Balsby, Thorsten J. S., Boersma, Maarten, Bonnet, Delphine, Christensen, Jens T., Dänhardt, Andreas, Delpy, Floriane, Falkenhaug, Tone, Finenko, Galina, Fleming, Nicholas E. C., Fuentes, Veronica, Galil, Bella, Gittenberger, Arjan, Griffin, Donal C., Haslob, Holger, Javidpour, Jamileh , Kamburska, Lyudmila, Kube, Sandra, Langenberg, Victor T., Lehtiniemi, Maiju, Lombard, Fabien, Malzahn, Arne, Marambio, Macarena, Mihneva, Veselina, Møller, Lene Friis, Niermann, Ulrich, Okyar, Melek Isinibilir, Özdemir, Zekiye Birinci, Pitois, Sophie, Reusch, Thorsten B. H., Robbens, Johan, Stefanova, Kremena, Thibault, Delphine, van der Veer, Henk W., Vansteenbrugge, Lies, van Walraven, Lodewijk and Woźniczka, Adam (2018) Ocean current connectivity propelling the secondary spread of a marine invasive comb jelly across western Eurasia. Open Access Global Ecology and Biogeography, 27 (7). pp. 814-827. DOI 10.1111/geb.12742.

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Supplementary data:

Abstract

Aim:
Invasive species are of increasing global concern. Nevertheless, the mechanisms driving further distribution after the initial establishment of non‐native species remain largely unresolved, especially in marine systems. Ocean currents can be a major driver governing range occupancy, but this has not been accounted for in most invasion ecology studies so far. We investigate how well initial establishment areas are interconnected to later occupancy regions to test for the potential role of ocean currents driving secondary spread dynamics in order to infer invasion corridors and the source–sink dynamics of a non‐native holoplanktonic biological probe species on a continental scale.

Location:
Western Eurasia.
Time period:
1980s–2016.

Major taxa studied:
‘Comb jelly’ Mnemiopsis leidyi.

Methods:
Based on 12,400 geo‐referenced occurrence data, we reconstruct the invasion history of M. leidyi in western Eurasia. We model ocean currents and calculate their stability to match the temporal and spatial spread dynamics with large‐scale connectivity patterns via ocean currents. Additionally, genetic markers are used to test the predicted connectivity between subpopulations.

Results:
Ocean currents can explain secondary spread dynamics, matching observed range expansions and the timing of first occurrence of our holoplanktonic non‐native biological probe species, leading to invasion corridors in western Eurasia. In northern Europe, regional extinctions after cold winters were followed by rapid recolonizations at a speed of up to 2,000 km per season. Source areas hosting year‐round populations in highly interconnected regions can re‐seed genotypes over large distances after local extinctions.

Main conclusions:
Although the release of ballast water from container ships may contribute to the dispersal of non‐native species, our results highlight the importance of ocean currents driving secondary spread dynamics. Highly interconnected areas hosting invasive species are crucial for secondary spread dynamics on a continental scale. Invasion risk assessments should consider large‐scale connectivity patterns and the potential source regions of non‐native marine species.

Document Type: Article
Keywords: biological invasions; gelatinous zooplankton; invasion corridors; invasive species; jellyfish; marine connectivity; Mnemiopsis leidyi; range expansion; source populations;
Research affiliation: IFREMER
OceanRep > Leibniz-Institut für Meereswissenschaften
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-TM Theory and Modeling
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-N Experimental Ecology - Food Webs
OceanRep > The Future Ocean - Cluster of Excellence
AWI
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1111/geb.12742
ISSN: 1466-822X
Projects: Future Ocean, MOBILEX, BONUS
Date Deposited: 12 Jun 2018 08:53
Last Modified: 23 Sep 2019 23:42
URI: http://oceanrep.geomar.de/id/eprint/43212

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