TY - JOUR
T1 - Ocean current connectivity propelling the secondary spread of a marine invasive comb jelly across western Eurasia
AU - Jaspers, Cornelia
AU - Huwer, Bastian
AU - Antajan, Elvire
AU - Hosia, Aino
AU - Hinrichsen, Hans-Harald
AU - Biastoch, Arne
AU - Angel, Dror
AU - Asmus, Ragnhild
AU - Augustin, Christina
AU - Bagheri, Siamak
AU - Beggs, Steven E.
AU - Balsby, Thorsten J. S.
AU - Boersma, Maarten
AU - Bonnet, Delphine
AU - Christensen, Jens T.
AU - Dänhardt, Andreas
AU - Delpy, Floriane
AU - Falkenhaug, Tone
AU - Finenko, Galina
AU - Fleming, Nicholas E. C.
AU - Fuentes, Veronica
AU - Galil, Bella
AU - Gittenberger, Arjan
AU - Griffin, Donal C.
AU - Haslob, Holger
AU - Javidpour, Jamileh
AU - Kamburska, Lyudmila
AU - Kube, Sandra
AU - Langenberg, Victor T.
AU - Lehtiniemi, Maiju
AU - Lombard, Fabien
AU - Malzahn, Arne
AU - Marambio, Macarena
AU - Mihneva, Veselina
AU - Møller, Lene Friis
AU - Niermann, Ulrich
AU - Okyar, Melek Isinibilir
AU - Özdemir, Zekiye Birinci
AU - Pitois, Sophie
AU - Reusch, Thorsten B. H.
AU - Robbens, Johan
AU - Stefanova, Kremena
AU - Thibault, Delphine
AU - van der Veer, Henk W.
AU - Vansteenbrugge, Lies
AU - van Walraven, Lodewijk
AU - Wozniczka, Adam
PY - 2018
Y1 - 2018
N2 - 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
AB - 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
U2 - 10.1111/geb.12742
DO - 10.1111/geb.12742
M3 - Journal article
SN - 1466-822X
VL - 27
SP - 814
EP - 827
JO - Global Ecology and Biogeography
JF - Global Ecology and Biogeography
IS - 7
ER -
