Stochastic dispersal increases the rate of upstream spread: A case study with green crabs on the northwest Atlantic coast
Publication Date
September 29, 2017
Authors
Ali Gharouni, Myriam A. Barbeau, Joël Chassé, Lin Wang, et al
Volume
12
Issue
9
Pages
e0185671
DOI
https://dx.plos.org/10.1371/journal.pone.0185671
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0185671
Scopus
85030157828
Mendeley
http://www.mendeley.com/research/stochastic-dispersal-increases-rate-upstream-spread-case-study-green-crabs-northwest-atlantic-coast
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Mendeley | Further Information

{"title"=>"Stochastic dispersal increases the rate of upstream spread: A case study with green crabs on the northwest Atlantic coast", "type"=>"journal", "authors"=>[{"first_name"=>"Ali", "last_name"=>"Gharouni", "scopus_author_id"=>"57009000400"}, {"first_name"=>"Myriam A.", "last_name"=>"Barbeau", "scopus_author_id"=>"7004217819"}, {"first_name"=>"Joël", "last_name"=>"Chassé", "scopus_author_id"=>"7003498168"}, {"first_name"=>"Lin", "last_name"=>"Wang", "scopus_author_id"=>"57008811100"}, {"first_name"=>"James", "last_name"=>"Watmough", "scopus_author_id"=>"6602205600"}], "year"=>2017, "source"=>"PLoS ONE", "identifiers"=>{"pui"=>"618502065", "sgr"=>"85030157828", "issn"=>"19326203", "scopus"=>"2-s2.0-85030157828", "doi"=>"10.1371/journal.pone.0185671", "isbn"=>"1111111111"}, "id"=>"1bb475c6-9de1-304e-a461-d8274ac0c7d7", "abstract"=>"Dispersal heterogeneity is an important process that can compensate for downstream advection, enabling aquatic organisms to persist or spread upstream. Our main focus was the effect of year-to-year variation in larval dispersal on invasion spread rate. We used the green crab, Carcinus maenas, as a case study. This species was first introduced over 200 years ago to the east coast of North America, and once established has maintained a relatively consistent spread rate against the dominant current. We used a stage-structured, integro- difference equation model that couples a demographic matrix for population growth and dispersal kernels for spread of individuals within a season. The kernel describing larval dispersal, the main dispersive stage, was mechanistically modeled to include both drift and settlement rate components. It was parameterized using a 3-dimensional hydrodynamic model of the Gulf of St Lawrence, which enabled us to incorporate larval behavior, namely vertical swimming. Dispersal heterogeneity was modeled at two temporal scales: within the larval period (months) and over the adult lifespan (years). The kernel models variation within the larval period. To model the variation among years, we allowed the kernel parameters to vary by year. Results indicated that when dispersal parameters vary with time, knowledge of the time-averaged dispersal process is insufficient for determining the upstream spread rate of the population. Rather upstream spread is possible over a number of years when incorporating the yearly variation, even when there are only a few ªgood yearsº featured by some upstream dispersal among many ªbad yearsº featured by only downstream dispersal. Accounting for annual variations in dispersal in population models is important to enhance understanding of spatial dynamics and population spread rates. Our developed model also provides a good platform to link the modeling of larval behavior and demography to largescale hydrodynamic models.", "link"=>"http://www.mendeley.com/research/stochastic-dispersal-increases-rate-upstream-spread-case-study-green-crabs-northwest-atlantic-coast", "reader_count"=>7, "reader_count_by_academic_status"=>{"Researcher"=>2, "Student > Master"=>1, "Other"=>1, "Professor"=>1, "Student > Bachelor"=>2}, "reader_count_by_user_role"=>{"Researcher"=>2, "Student > Master"=>1, "Other"=>1, "Professor"=>1, "Student > Bachelor"=>2}, "reader_count_by_subject_area"=>{"Environmental Science"=>2, "Biochemistry, Genetics and Molecular Biology"=>1, "Mathematics"=>1, "Agricultural and Biological Sciences"=>1, "Sports and Recreations"=>1, "Unspecified"=>1}, "reader_count_by_subdiscipline"=>{"Sports and Recreations"=>{"Sports and Recreations"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Mathematics"=>{"Mathematics"=>1}, "Environmental Science"=>{"Environmental Science"=>2}, "Unspecified"=>{"Unspecified"=>1}}, "group_count"=>0}

Scopus | Further Information

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