research overview Current projects include education research, writing two books (teaching and learning evolution and births and death across scales of biology). Closed down lab and stopped taking on new graduate students.
selected publications chapter Cutthroat Trout Diversity in the Southern Rocky Mountains. Special Publication- American Fisheries Society. 323-+. 2018 Species Conceptualization and Delimitation: A Framework for the Taxonomic Revision of Cutthroat Trout. Special Publication- American Fisheries Society. 33-51. 2018 Application of Phylogenetic Techniques in Studies of Soil Microbial Communities. 608-617. 2007 Phylogenetic approaches for the study of soil microbial communities 2007 Molecular clocks 2001 The Isthmus of Panama, molecular clocks, and the historical biogeography of neotropical freshwater fishes 1997 The inter-relationships of lamniform sharks: Testing phylogenetic hypotheses with sequence data 1997 Independent origins of filter-feeding in megamouth and basking sharks (Order Lamniformes) inferred from phylogenetic analysis of cytochrome b gene sequences 1997 Smithsonian Tropical Research Institute Neotropical Fish Collections 1997 Systematics of the Lamnidae and the origination time of Carcharodon carcharias inferred from the comparative analysis of mitochondrial DNA sequences 1993 conference proceeding Preliminary calibration results for the HST/Cosmic Origins Spectrograph. Proceedings of SPIE. 93-99. 2003 journal article To Tidy or not When Teaching R Skills in Biology Classes. International Journal of Higher Education. 39-39. 2022 Ecological divergence of a habitat constructed to harbor an endangered species. Conservation Science and Practice. 2021 Design-based learning for a sustainable future: student outcomes resulting from a biomimicry curriculum in an evolution course. Evolution: Education and Outreach. 2020 Inferences of environmental and biotic effects on patterns of eukaryotic alpha and beta diversity for the spring systems of Ash Meadows, Nevada. Oecologia. 931-944. 2019 The complete mitochondrial genome of Gunnison's prairie dog subspecies (Cynomys gunnisoni gunnisoni) and phylogenetic relationship within the genus Cynomys. Mitochondrial DNA. Part B. Resources. 397-398. 2019 Building Bridges: An Active Learning Lesson in Evolution and Collaboration. Journal of College Science Teaching. 46-58. 2019 Identifying Students’ Progress and Mobility Patterns in Higher Education Through Open-Source Visualization. 1-18. 2019 FOLLOWING THE FATE OF FACILITATED MIGRATION IN A SMALL DESERT SPRING. Southwestern Naturalist. 8-16. 2018 A Quantitative Framework for the Analysis of Two-Stage Exams. International Journal of Higher Education. 33-33. 2018 Overcoming barriers to active interventions for genetic diversity. Biodiversity and Conservation. 1753-1765. 2017 Measuring Student Interactions Using Networks: Insights Into the Learning Community of a Large Active Learning Course. Journal of College Science Teaching. 90-99. 2017 The complete mitochondrial genome of the Warm Springs pupfish, Cyprinodon nevadensis pectoralis. Mitochondrial DNA Part A: DNA Mapping, Sequencing, and Analysis. 2349-2350. 2016 The genetic legacy of more than a century of stocking trout: a case study in Rocky Mountain National Park, Colorado, USA. Canadian Journal of Fisheries and Aquatic Sciences. 1565-1574. 2015 Constructional Morphology Within the Head of Hammerhead Sharks (Sphyrnidae). Journal of Morphology. 526-539. 2015 DNA from historical and trophy samples provides insights into white shark population origins and genetic diversity. Endangered Species Research. 233-241. 2015 Discerning invasion history in an ephemerally connected system: landscape genetics of Procambarus clarkii in Ash Meadows, Nevada. Biological Invasions. 1719-1734. 2014 Evidence for two subspecies of Gunnison's prairie dogs (Cynomys gunnisoni), and the general importance of the subspecies concept. Biological Conservation. 1-11. 2014 Fitness landscape of sympatric pupfishes a useful tool for visualizing speciation. Molecular Ecology. 2144-2145. 2014 Geographically disjunct populations and widespread genets in an endangered halophilic plant, the Amargosa niterwort (Nitrophila mohavensis). Conservation Genetics. 953-962. 2013 Do pathogens reduce genetic diversity of their hosts? Variable effects of sylvatic plague in black-tailed prairie dogs. Molecular Ecology. 2441-2455. 2013 Historical stocking data and 19th century DNA reveal human-induced changes to native diversity and distribution of cutthroat trout. Molecular Ecology. 5194-5207. 2012 Interactions Among Symbionts of Oropsylla spp. (Siphonoptera: Ceratophyllidae). Journal of Medical Entomology. 492-496. 2012 Connectivity of prairie dog colonies in an altered landscape: inferences from analysis of microsatellite DNA variation. Conservation Genetics. 407-418. 2012 Dramatic shifts in the gene pool of a managed population of an endangered species may be exacerbated by high genetic load. Conservation Genetics. 349-358. 2012 Negative Supercoiling Creates Single-Stranded Patches of DNA That Are Substrates for AID-Mediated Mutagenesis. PLoS Genetics. 2012 Antipodean white sharks on a Mediterranean walkabout? Historical dispersal leads to genetic discontinuity and an endangered anomalous population. Proceedings of the Royal Society of London. Biological Sciences. 1679-1686. 2011 Soil rotifer communities are extremely diverse globally but spatially autocorrelated locally. Proceedings of the National Academy of Sciences of the United States of America. 4406-4410. 2011 Phylogeny of hammerhead sharks (family Sphyrnidae) inferred from mitochondrial and nuclear genes (vol 55, pg 572, 2010). Molecular Phylogenetics and Evolution. 414-414. 2011 Population genetic structure of the prairie dog flea and plague vector, Oropsylla hirsuta. Parasitology. 71-79. 2011 The conservation genetics of Ash Meadows pupfish populations. I. The Warm Springs pupfish Cyprinodon nevadensis pectoralis. Conservation Genetics. 1847-1857. 2010 Barcoding bushmeat: molecular identification of Central African and South American harvested vertebrates. Conservation Genetics. 1389-1404. 2010 Phylogeny of hammerhead sharks (Family Sphyrnidae) inferred from mitochondrial and nuclear genes. Molecular Phylogenetics and Evolution. 572-579. 2010 Bacterial communities of disease vectors sampled across time, space, and species. The ISME Journal. 223-231. 2010 Permanent Genetic Resources added to Molecular Ecology Resources Database 1 August 2009-30 September 2009. Molecular Ecology Resources. 232-236. 2010 Environmental DNA sequencing primers for eutardigrades and bdelloid rotifers.. BMC Ecology and Evolution. 25. 2009 Evidence that chytrids dominate fungal communities in high-elevation soils. Proceedings of the National Academy of Sciences of the United States of America. 18315-18320. 2009 Population structure and genetic management of Rio Grande cutthroat trout (Oncorhynchus clarkii virginalis). Conservation Genetics. 1209-1221. 2009 Species-level diversification of African dwarf crocodiles (Genus Osteolaemus): A geographic and phylogenetic perspective. Molecular Phylogenetics and Evolution. 496-506. 2009 The earliest stages of ecosystem succession in high-elevation (5000 metres above sea level), recently deglaciated soils. Proceedings of the Royal Society of London. Biological Sciences. 2793-2802. 2008 Phylogenetic Relationships and Functional Genes: Distribution of a Gene (mnxG) Encoding a Putative Manganese-Oxidizing Enzyme in Bacillus Species. Applied and Environmental Microbiology. 7265-7271. 2008 Insights and inferences about integron evolution from genomic data. BMC Genomics. 2008 Hybridization dynamics between Colorado's native cutthroat trout and introduced rainbow trout. Journal of Heredity. 149-156. 2008 Bacterial communities of Bartonella-Positive fleas: Diversity and community assembly patterns. Applied and Environmental Microbiology. 1667-1670. 2008 Characterization of Bartonella strains isolated from black-tailed prairie dogs (Cynomys ludovicianus). Vector-Borne and Zoonotic Diseases. 1-5. 2008 Widespread occurrence and phylogenetic placement of a soil clone group adds a prominent new branch to the fungal tree of life. Molecular Phylogenetics and Evolution. 635-644. 2008 Across the great divide: genetic forensics reveals misidentification of endangered cutthroat trout populations. Molecular Ecology. 4445-4454. 2007 Characterization of tetranucleotide microsatellites for Rio Grande cutthroat trout and rainbow trout, and their cross-amplification in other cutthroat trout subspecies. Molecular Ecology Resources. 594-596. 2007 Biogeochemical consequences of rapid microbial turnover and seasonal succession in soil. Ecology. 1379-1385. 2007 Microbial community succession in an unvegetated, recently deglaciated soil. Microbial Ecology. 110-122. 2007 Testing for differentiation of microbial communities using phylogenetic methods: Accounting for uncertainty of phylogenetic inference and character state mapping. Microbial Ecology. 408-417. 2006 Advocacy dressed up as science:: response to Ramey et al. (2005). Animal Conservation. 248-249. 2006 Mistaken view of taxonomic validity undermines conservation of an evolutionarily distinct mouse: a response to Ramey et al. (2005). Animal Conservation. 237-243. 2006 The devil's in the details:: genetic and phenotypic divergence between artificial and native populations of the endangered pupfish (Cyprinodon diabolis). Animal Conservation. 316-321. 2006 Global phylogeography of the scalloped hammerhead shark (Sphyrna lewini). Molecular Ecology. 2239-2251. 2006 Using coalescent simulations to test the impact of quaternary climate cycles on divergence in an alpine plant-insect association. Evolution. 1004-1013. 2006 Landscape structure and plague occurrence in black-tailed prairie dogs on grasslands of the western USA. Landscape Ecology. 941-955. 2005 Historical biogeography of two alpine butterflies in the Rocky Mountains: broad-scale concordance and local-scale discordance. Journal of Biogeography. 1943-1956. 2005 Characterization of 14 polymorphic microsatellite markers for the black-tailed prairie dog (Cynomys ludovicianus). Molecular Ecology Resources. 71-73. 2005 Marked genetic divergence among sky island populations of Sedum lanceolatum (Crassulaceae) in the rocky mountains. American Journal of Botany. 477-486. 2005 Spatial variation in Streptomyces genetic composition and diversity in a prairie soil. Microbial Ecology. 601-612. 2004 The rate and pattern of cladogenesis in microbes. Evolution. 946-955. 2004 Phylogeny of elasmobranchs based on LSU and SSU ribosomal RNA genes. Molecular Phylogenetics and Evolution. 214-224. 2004 Integron diversity in heavy-metal-contaminated mine tailings and inferences about integron evolution. Applied and Environmental Microbiology. 1160-1168. 2004 Evolutionary history of Ash Meadows pupfish (genus Cyprinodon) populations inferred using microsatellite markers. Conservation Genetics. 769-782. 2004 Historic cycles of fragmentation and expansion in Parnassius smintheus (Papilionidae) inferred using mitochondrial DNA. Evolution. 113-127. 2004 Molecular and metabolic characterization of cold-tolerant alpine soil Pseudomonas sensu stricto. Applied and Environmental Microbiology. 483-489. 2004 Seasonal dynamics of previously unknown fungal lineages in tundra soils. Science. 1359-1361. 2003 Perils of paralogy: Using HSP70 genes for inferring organismal phylogenies. Systematic Biology. 570-587. 2002 Phylogenetic approaches for describing and comparing the diversity of microbial communities. Applied and Environmental Microbiology. 3673-3682. 2002 Conservation of a dinucleotide simple sequence repeat locus in sharks. Molecular Phylogenetics and Evolution. 205-213. 2002 Isolation and characterization of polymorphic microsatellite loci in pupfish (genus Cyprinodon). Conservation Genetics. 197-204. 2002 Phylogeny of living elasmobranchs based on LSU and SSU rRNA-gene sequences.. Integrative and Comparative Biology. 1627-1628. 2001 Sex-biased dispersal of great white sharks - In some respects, these sharks behave more like whales and dolphins than other fish.. Nature. 139-140. 2001 Is tetralogy true? Lack of support for the "one-to-four rule". Molecular Biology and Evolution (MBE). 89-93. 2001 The phylogenetic placement of Chondrichthyes: inferences from analysis of multiple genes and implications for comparative studies. Genetica. 349-357. 2001 Choosing among alternative trees of multigene families. Molecular Phylogenetics and Evolution. 430-439. 2000 Regional endemism and cryptic species revealed by molecular and morphological analysis of a widespread species of Neotropical catfish. Proceedings of the Royal Society of London. Biological Sciences. 1135-1141. 2000 Increasing genomic complexity by gene duplication and the origin of vertebrates. The American Naturalist. 111-128. 1999 Substitution rates of organelle and nuclear genes in sharks: Implicating metabolic rate (again). Molecular Biology and Evolution (MBE). 996-1002. 1999 Marine incursion into South America. Nature. 421-422. 1998
education and training Ph.D., University of Hawaii at Manoa 1992 M.S., University of Hawaii at Manoa 1990 B.S., University of Arizona 1986
awards and honors President's Teaching Scholar, conferred by University of Colorado President, 2016 BFA Award for Excellence in Teaching and Pedagogy, conferred by Boulder Faculty Assembly, 2015