Transport pathways shape the biogeography of alien freshwater fishes in Australia

P. García-Díaz; A. Kerezsy; P.J. Unmack; M. Lintermans; S.J. Beatty; G.L. Butler; R. Freeman; M.P. Hammer; S. Hardie; M.J. Kennard; D.L. Morgan; B.J. Pusey; T.A. Raadik; J.D. Thiem; N.S. Whiterod; P. Cassey; R.P. Duncan; P. Pysek

doi:10.1111/ddi.12777

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Transport pathways shape the biogeography of alien freshwater fishes in Australia

Journal article

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Transport pathways shape the biogeography of alien freshwater fishes in Australia

P. García-Díaz, A. Kerezsy, P.J. Unmack, M. Lintermans, S.J. Beatty, G.L. Butler, R. Freeman, M.P. Hammer, S. Hardie, M.J. Kennard, …

Diversity and Distributions, Vol.24(10), pp.1405-1415

2018

DOI: https://doi.org/10.1111/ddi.12777

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Abstract

Aim Changing preferences regarding which species humans have transported to new regions can have major consequences for the potential distribution of alien taxa, but the mechanisms shaping these patterns are poorly understood. We assessed the extent to which changes in human preferences for transporting and introducing alien freshwater fishes have altered their biogeography. Location Australia. Methods We compiled an up‐to‐date database of alien freshwater fishes established in drainages in Australia before and after the number of established alien fish species doubled (pre‐1970 and post‐1970, respectively). Using metacommunity models, we analysed the influence of species traits and drainage features on the distribution of alien fishes that established pre‐ and post‐1970. Results Alien fishes in Australia were introduced via four main transport pathways: acclimatization, aquaculture, biocontrol and ornamental trade. The relative importance of each pathway changed substantially between the two periods, accompanied by changes in the distribution of alien fishes and the variables predicting their distribution. Pre‐1970, most species (64%) were introduced by acclimatization societies for purposes such as angling and biocontrol, and these fish have established in inland drainages more heavily impacted by human activities. In contrast, most of the post‐1970 introductions (69%) were ornamental fishes, with most species established in small, north‐eastern, tropical and subtropical coastal drainages. Main conclusions Substantial changes in introduction preferences and transport pathways over time have altered both the patterns and underlying processes shaping the biogeography of alien fishes in Australia. Our findings highlight the need for caution when using historical data to infer potential future distributions of alien species. The continuing spread of alien species means traditional biogeographical units may no longer be identifiable in the foreseeable future.

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Title: Transport pathways shape the biogeography of alien freshwater fishes in Australia
Authors/Creators: P. García-Díaz (Author/Creator) - Manaaki Whenua – Landcare Research
A. Kerezsy (Author/Creator) - Dr Fish Contracting Lake Cargelligo NSW Australia
P.J. Unmack (Author/Creator) - University of Canberra
M. Lintermans (Author/Creator) - University of Canberra
S.J. Beatty (Author/Creator) - Murdoch University
G.L. Butler (Author/Creator) - Department of Primary Industries Grafton Fisheries Centre Grafton NSW Australia
R. Freeman (Author/Creator) - Inland Fisheries Service
M.P. Hammer (Author/Creator)
S. Hardie (Author/Creator) - University of Tasmania
M.J. Kennard (Author/Creator) - Griffith University
D.L. Morgan (Author/Creator) - Murdoch University
B.J. Pusey (Author/Creator) - The University of Western Australia
T.A. Raadik (Author/Creator) - Arthur Rylah Institute for Environmental Research
J.D. Thiem (Author/Creator) - New South Wales Department of Primary Industries
N.S. Whiterod (Author/Creator) - Aquasave–Nature Glenelg Trust Goolwa Beach SA Australia
P. Cassey (Author/Creator) - The University of Adelaide
R.P. Duncan (Author/Creator) - University of Canberra
P. Pysek (Author/Creator)
Publication Details: Diversity and Distributions, Vol.24(10), pp.1405-1415
Publisher: Wiley
Identifiers: 991005541048207891
Copyright: © 2018 John Wiley & Sons Ltd
Murdoch Affiliation: School of Veterinary and Life Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.2 Marine Biology; 3.2.62 Freshwater Fish Ecology
Web Of Science research areas: Biodiversity Conservation; Ecology
ESI research areas: Environment/Ecology