Pechmann, Joseph

wcu

There are 14 item/s.

TitleDateViewsBrief Description
Land use and eastern hellbender (Cryptobranchus alleganiensis alleganiensis) populations in three Hiwassee River tributary watersheds 2012 2286 The Eastern Hellbender (Cryptobranchus alleganiensis alleganiensis) is a cryptic, long-lived, species in the family Cryptobranchidae. Declines in populations of many aquatic species, including C. a. alleganiensis may be related to changes in the st...
The effects of rhododendron on salamander communities in the Nantahala Mountains 2012 1413 Rhododendron or great laurel is a common evergreen shrub found throughout eastern North America. Although native, rhododendron has been increasing in the Southern Appalachian Mountains landscape due to fire suppression, logging, and loss of the Ameri...
Terrestrial habitat selection by the dusky gopher frog (Rana sevosa) 2012 2296 The endangered dusky gopher frog (Rana sevosa) inhabits underground refuges created by fire and burrowing animals in longleaf pine forests. Prescribed fire can result in a mosaic of habitat patches having different characteristics. Fire suppression m...
How conservative are sexual pheromones? : a cross-genera study of Plethodontid salamanders 2013 1079 Pheromones play a pivotal role in salamander reproductive behavior. Males deliver internally made pheromones from their mental gland to females during courtship interactions in the family Plethodontidae. These courtship pheromones typically increas...
Seasonal activity in dwarf waterdogs (Necturus punctatus) : risk management or resource acquisition? 2013 1492 Predators can have non-consumptive effects (NCE) on prey populations in addition to normal consumptive effects. One of these NCE may be changes in patterns of behavior to reduce predation risk. Aquatic salamanders of the genus Necturus exhibit season...
Assessing the effectiveness and values of wetland habitat created for amphibians in the Nantahala National Forest in NC 2014 661 Amphibians have been declining rapidly in recent years due to many factors. One of the largest threats comes from alteration and destruction of both terrestrial and aquatic habitat. The U.S. Forest Service has been creating and restoring wetland ha...
Modeling occurrence of the green salamander, Aneides aeneus, in the Blue Ridge Escarpment 2014 3168 Amphibian species have experienced global declines since the 1970s andplethodontid salamanders are no exception. The green salamander, Aneides aeneus, is aplethodontid salamander that has experienced declines throughout its range in the BlueRidge Esc...
Aggression affects distributions and hybrid zone expansion in montane Plethodon salamanders 2015 850 Ecologists have long been interested in the mechanisms that drive the distribution of closely related species. Often overlapping congeneric species do not differ enough in their uses of space and food resources to prevent competition. Over time, insu...
The influence of abiotic and biotic environmental factors at high elevation on the life cycle of a facultatively paedomorphic salamander 2016 812 Environmentally cued polymorphisms are excellent models for studying the origins of phenotypicplasticity. Facultative paedomorphosis in salamanders is a form of discrete phenotypic plasticity in whichaquatic larvae respond to environmental cues by ei...
The effects of the protist parasite Dermomycoides Sp., on the Dusky Gopher Frog (Rana Sevosa) and the Southern Leopard Frog (Rana Sphenocephala) 2016 1230 This research addressed whether characteristics of translocation ponds, Gosner (developmental) stage at exposure, stress caused by density, and perceived presence of predators have an effect on the susceptibly of frog tadpoles to the protozoan parasi...
Movement and habitat ecology of protected species in North Carolina 2016 782 Reptiles and amphibians are declining worldwide, especially from global climate change and habitat loss and fragmentation. Conservation efforts for imperiled species usually involve habitat protection, but are only effective if biologists and land ma...
The impossible salamander: aberrant coloration as a result of metal toxicity, crypsis, or light exposure 2018 274 The Buck Creek Serpentine Barrens in Clay County, North Carolina is an unusual habitat comprised of a pine savannah with endemic plant species underlain by serpentinite rock. The area is drained by a stream with a mostly open canopy. Most Desmognathu...
Fire maintenance and artificial burrows increase growth and survival of the endangered dusky gopher frog in longleaf pine forests 2019 234 The critically endangered Dusky Gopher Frog occupies longleaf pine savannas frequented by fire, where grasses and natural burrows are abundant. Gopher frogs avoid fire-suppressed habitat, where the understory is comprised of shrubs and there are fewe...
Range delimitation of a North Carolina endemic salamander, the Blue Ridge Gray-Cheeked Salamander, Plethodon amplus 2020 66 The Southern Appalachian Mountains are a global hotspot for salamander biodiversity includingmany endemic species. These endemic montane salamanders have limited ranges and are vulnerable to anthropogenically induced habitat shifts. Plethodon amplus ...