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The ecological impact of large coastal human populations on marine ecosystems remains relatively unknown. Here, we examine the population structure of Patiria miniata, the bat star, and correlate genetic distances with a model based on flow rates and proximity to P. miniata populations for the four major stormwater runoff and wastewater effluent sources of the Southern California Bight. We show that overall genetic connectivity is high (F(ST)~0.005); however, multivariate analyses show that genetic structure is highly correlated with anthropogenic inputs. The best models included both stormwater and wastewater variables and explained between 26.55 and 93.69% of the observed structure. Additionally, regressions between allelic richness and distance to sources show that populations near anthropogenic pollution have reduced genetic diversity. Our results indicate that anthropogenic runoff and effluent are acting as barriers to larval dispersal, effectively isolating a high gene flow species that is virtually free of direct human impact.
Anderson,
Considering spatial and temporal scale in landscape-genetic studies of gene flow.
2010, Pubmed
Anderson,
Considering spatial and temporal scale in landscape-genetic studies of gene flow.
2010,
Pubmed
Banks,
Oceanic variability and coastal topography shape genetic structure in a long-dispersing sea urchin.
2007,
Pubmed
,
Echinobase
Bay,
Water quality impacts of stormwater discharges to Santa Monica Bay.
2003,
Pubmed
,
Echinobase
Crain,
Understanding and managing human threats to the coastal marine environment.
2009,
Pubmed
Crawford,
smogd: software for the measurement of genetic diversity.
2010,
Pubmed
Epperson,
Mutation at high rates reduces spatial structure within populations.
2005,
Pubmed
Excoffier,
Arlequin suite ver 3.5: a new series of programs to perform population genetics analyses under Linux and Windows.
2010,
Pubmed
Galindo,
Seascape genetics along a steep cline: using genetic patterns to test predictions of marine larval dispersal.
2010,
Pubmed
Galindo,
Seascape genetics: a coupled oceanographic-genetic model predicts population structure of Caribbean corals.
2006,
Pubmed
Halpern,
Evaluating and ranking the vulnerability of global marine ecosystems to anthropogenic threats.
2007,
Pubmed
Halpern,
A global map of human impact on marine ecosystems.
2008,
Pubmed
Kalinowski,
Do polymorphic loci require large sample sizes to estimate genetic distances?
2005,
Pubmed
Keever,
Discordant distribution of populations and genetic variation in a sea star with high dispersal potential.
2009,
Pubmed
,
Echinobase
Kenchington,
Genetic differentiation in relation to marine landscape in a broadcast-spawning bivalve mollusc (Placopecten magellanicus).
2006,
Pubmed
Lyon,
How effective has the Clean Water Act been at reducing pollutant mass emissions to the Southern California Bight over the past 35 years?
2009,
Pubmed
McCraney,
Rampant drift in artificially fragmented populations of the endangered tidewater goby (Eucyclogobius newberryi).
2010,
Pubmed
Palumbi,
Humans as the world's greatest evolutionary force.
2001,
Pubmed
Selkoe,
Taking the chaos out of genetic patchiness: seascape genetics reveals ecological and oceanographic drivers of genetic patterns in three temperate reef species.
2010,
Pubmed
Storfer,
Landscape genetics: where are we now?
2010,
Pubmed
Storfer,
Putting the "landscape" in landscape genetics.
2007,
Pubmed
Walker,
Bioaccumulation and Metabolic Effects of the Endocrine Disruptor Methoprene in the Lobster, Homarus americanus.
2005,
Pubmed
Wang,
Recognizing the temporal distinctions between landscape genetics and phylogeography.
2010,
Pubmed
Waters,
Cladogenesis in a starfish species complex from southern Australia: evidence for vicariant speciation?
2004,
Pubmed
,
Echinobase
White,
Ocean currents help explain population genetic structure.
2010,
Pubmed
