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- Publications
- Influence
Fine-Scale Population Structure and Asymmetrical Dispersal in an Obligate Salt-Marsh Passerine, the Saltmarsh Sparrow (Ammodramus caudacutus)
- J. Walsh, A. Kovach, K. Babbitt, Kathleen M. O’Brien
- Biology
- 27 June 2012
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
Relationship of phenotypic variation and genetic admixture in the Saltmarsh–Nelson's sparrow hybrid zone
- J. Walsh, W. Shriver, B. Olsen, Kathleen M. O’Brien, A. Kovach
- Biology
- 17 June 2015
ABSTRACT Hybridization is influential in shaping species' dynamics and has many evolutionary and conservation implications. Identification of hybrid individuals typically relies on morphological… Expand
Bidirectional adaptive introgression between two ecologically divergent sparrow species
- J. Walsh, A. Kovach, B. Olsen, W. Shriver, I. Lovette
- Biology, Medicine
- Evolution; international journal of organic…
- 1 October 2018
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
Genetic Barcode RFLP Analysis of the Nelson's and Saltmarsh Sparrow Hybrid Zone
- J. Walsh, A. Kovach, O. Lane, Kathleen M. O’Brien, K. Babbitt
- Biology
- 19 May 2011
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
Satiety effects of a whole-grain fibre composite ingredient: reduced food intake and appetite ratings.
- J. Harrold, L. Breslin, J. Walsh, J. Halford, C. Pelkman
- Medicine
- Food & function
- 24 September 2014
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
Differential introgression and the maintenance of species boundaries in an advanced generation avian hybrid zone
- J. Walsh, W. Shriver, B. Olsen, A. Kovach
- Biology, Medicine
- BMC Evolutionary Biology
- 22 March 2016
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
Historical DNA as a tool to address key questions in avian biology and evolution: A review of methods, challenges, applications, and future directions
- Shawn M. Billerman, J. Walsh
- Biology, Medicine
- Molecular ecology resources
- 23 July 2019
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
Subspecies delineation amid phenotypic, geographic and genetic discordance in a songbird
- J. Walsh, I. Lovette, +4 authors A. Kovach
- Biology, Medicine
- Molecular ecology
- 1 February 2017
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
Demographic analysis demonstrates systematic but independent spatial variation in abiotic and biotic stressors across 59 percent of a global species range
- Katharine J. Ruskin, M. Etterson, +13 authors B. Olsen
- Biology
- The Auk
- 9 October 2017
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
Extrinsic and intrinsic factors influence fitness in an avian hybrid zone
- J. Walsh, B. Olsen, Katharine J. Ruskin, W. Shriver, Kathleen M. O’Brien, A. Kovach
- Biology
- 1 December 2016
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