J. Walsh

Publications59
h-index11
Citations342
Highly Influential Citations16
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Fine-Scale Population Structure and Asymmetrical Dispersal in an Obligate Salt-Marsh Passerine, the Saltmarsh Sparrow (Ammodramus caudacutus)
ABSTRACT. Understanding the spatial scale of gene flow can yield valuable insight into the ecology of an organism and guide conservation strategies. Fine-scale genetic structure is uncommon in… Expand
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Relationship of phenotypic variation and genetic admixture in the Saltmarsh–Nelson's sparrow hybrid zone
ABSTRACT Hybridization is influential in shaping species' dynamics and has many evolutionary and conservation implications. Identification of hybrid individuals typically relies on morphological… Expand
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Bidirectional adaptive introgression between two ecologically divergent sparrow species
Natural hybrid zones can be used to dissect the mechanisms driving key evolutionary processes by allowing us to identify genomic regions important for establishing reproductive isolation and that… Expand
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Genetic Barcode RFLP Analysis of the Nelson's and Saltmarsh Sparrow Hybrid Zone
Abstract Hybridization between Saltmarsh Sparrow (Ammodramus caudacutus) and Nelson's Sparrow (A. nelsoni) has been documented in areas where the two species occur sympatrically, increasing the… Expand
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Satiety effects of a whole-grain fibre composite ingredient: reduced food intake and appetite ratings.
The current study assesses the impact on appetite and food intake of a novel co-processed ingredient containing a viscous fibre and whole-grain high-amylose corn flour, a source of type 1 and type 2… Expand
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Differential introgression and the maintenance of species boundaries in an advanced generation avian hybrid zone
BackgroundEvolutionary processes, including selection and differential fitness, shape the introgression of genetic material across a hybrid zone, resulting in the exchange of some genes but not… Expand
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Historical DNA as a tool to address key questions in avian biology and evolution: A review of methods, challenges, applications, and future directions
Museum specimens play a crucial role in addressing key questions in systematics, evolution, ecology, and conservation. With the advent of high‐throughput sequencing technologies, specimens that have… Expand
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Subspecies delineation amid phenotypic, geographic and genetic discordance in a songbird
Understanding the processes that drive divergence within and among species is a long‐standing goal in evolutionary biology. Traditional approaches to assessing differentiation rely on phenotypes to… Expand
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Demographic analysis demonstrates systematic but independent spatial variation in abiotic and biotic stressors across 59 percent of a global species range
ABSTRACT The balance of abiotic and biotic stressors experienced by a species likely varies across its range, resulting in spatially heterogeneous limitations on the species' demographic rates.… Expand
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Extrinsic and intrinsic factors influence fitness in an avian hybrid zone
The effects of hybridization on evolutionary processes are primarily determined by the differential between hybrid and parental species fitness. Assessing the impacts of hybridization can be… Expand
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