| concurrent speciation in the eastern woodland salamanders (genus plethodon): dna sequences of the complete albumin nuclear and partial mitochondrial 12s genes. | salamanders of the north american plethodontid genus plethodon are important model organisms in a variety of studies that depend on a phylogenetic framework (e.g., chemical communication, ecological competition, life histories, hybridization, and speciation), and consequently their systematics has been intensively investigated over several decades. nevertheless, we lack a synthesis of relationships among the species. in the analyses reported here we use new dna sequence data from the complete nu ... | 2012 | 22230029 |
| risks to biodiversity from hydraulic fracturing for natural gas in the marcellus and utica shales. | high-volume horizontal hydraulic fracturing (hvhhf) for mining natural gas from the marcellus and utica shales is widespread in pennsylvania and potentially throughout approximately 280,000 km(2) of the appalachian basin. physical and chemical impacts of hvhhf include pollution by toxic synthetic chemicals, salt, and radionuclides, landscape fragmentation by wellpads, pipelines, and roads, alteration of stream and wetland hydrology, and increased truck traffic. despite concerns about human healt ... | 2013 | 23701448 |
| re-evaluation of the wehrle's salamander (plethodon wehrlei fowler and dunn) species group (caudata: plethodontidae) using genomic data, with the description of a new species. | woodland salamanders of the genus plethodon are characterized by strong ecological and morphological conservatism. one assemblage, the wehrle's salamander (plethodon wehrlei fowler dunn) species group, is distributed from new york to tennessee, usa, and includes several morphological variants, four of which are sufficiently distinct to have been recognized as species in the past. for many years after two of these species were placed in synonymy, only p. wehrlei and p. punctatus highton were reco ... | 2019 | 31717092 |