title: A 3D individual-based aquatic transport model for the assessment of the potential dispersal of planktonic larvae of an invasive bivalve.
abstract: The unwanted impacts of non-indigenous species have become one of the major ecological and economic threats to aquatic ecosystems worldwide. Assessing the potential dispersal and colonization of non-indigenous species is necessary to prevent or reduce deleterious effects that may lead to ecosystem degradation and a range of economic impacts. A three dimensional (3D) numerical model has been developed to evaluate the local dispersal of the planktonic larvae of an invasive bivalve, Asian clam (Corbicula fluminea), by passive hydraulic transport in Lake Tahoe, USA. The probability of dispersal of Asian clam larvae from the existing high density populations to novel habitats is determined by the magnitude and timing of strong wind events. The probability of colonization of new near-shore areas outside the existing beds is low, but sensitive to the larvae settling velocity ws. High larvae mortality was observed due to settling in unsuitable deep habitats. The impact of UV-radiation during the pelagic stages, on the Asian clam mortality was low. This work provides a quantification of the number of propagules that may be successfully transported as a result of natural processes and in function of population size. The knowledge and understanding of the relative contribution of different dispersal pathways, may directly inform decision-making and resource allocation associated with invasive species management.
authors.affiliation: Instituto del Agua, Universidad de Granada, C/ Ramón y Cajal 4, Granada 18071, Spain; Department of Civil Engineering, Universidad de Granada, Avda. de Hospicio s/n, Granada 18071, Spain. Electronic address: abhoyer@ugr.es.
authors.forename: Andrea B
authors.initials: AB
authors.lastname: Hoyer
authors.affiliation: Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA; Tahoe Environmental Research Center, University of California, Davis, 291 Country Club Dr., Incline Village, NV 89451, USA. Electronic address: Marion.E.Wittmann.3@nd.edu.
authors.forename: Marion E
authors.initials: ME
authors.lastname: Wittmann
authors.affiliation: Aquatic Ecosystem Analysis Laboratory, University of Nevada, Reno, 1664 N. Virginia St., Reno, NV 89557, USA. Electronic address: limnosudeep@me.com.
authors.forename: Sudeep
authors.initials: S
authors.lastname: Chandra
authors.affiliation: Tahoe Environmental Research Center, University of California, Davis, 291 Country Club Dr., Incline Village, NV 89451, USA; Department of Civil and Environmental Engineering, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA. Electronic address: gschladow@ucdavis.edu.
authors.forename: S Geoffrey
authors.initials: SG
authors.lastname: Schladow
authors.affiliation: Instituto del Agua, Universidad de Granada, C/ Ramón y Cajal 4, Granada 18071, Spain; Department of Civil Engineering, Universidad de Granada, Avda. de Hospicio s/n, Granada 18071, Spain. Electronic address: fjrueda@ugr.es.
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Rueda
mesh_terms: D063147:Animal Distribution; D000818:Animals; D049874:Corbicula / Q000254:growth & development* / Q000502:physiology; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D060106:Lakes; D007814:Larva / Q000254:growth & development / Q000502:physiology; D008954:Models, Biological; D010933:Plankton / Q000254:growth & development / Q000502:physiology; D011156:Population Density; D014481:United States; D014919:Wind
keywords: Individual-based transport model; Invasive species; Lake currents; Local dispersal; Planktonic larvae transport; Probability of colonization