Additional research is needed to determine whether understory hemlock both and hardwood dominated forests exerts significant influence riparian systems what consequences of loss as species would be. Castanea Martin B introduction to standards quality control the laboratory. The overall goal of site selection design was to stream monitoring sites that isolate differences conditions and water quality due forest type with other factors being similar possible. Exotic species have the potential to alter composition as well ecosystem structure and function Castello others Liebhold Ellison [...]

For all streams. forests in the southern Appalachian Mountains USA. methods for using the Spherical Densiometer are Instruction Sheet Lemmon AnalysisWe tested significant differences between means each pair of hardwoodand sites measured parameters including stream temperature nitrate concentrations discharge . This baseline data can be used the future to track magnitudes of changes riparian environmental conditions that occur with hemlock decline and mortality [...]

On Acer rubrum L. PAR and Canopy Cover b for four different riparian forest types two . In GSMNP hemlocks commonly dominate riparian areas and cove forests near stream headwaters [...]

NCBISkip to main contentSkip ToAbout AccesskeysMy NCBISign PMC US National Library of Medicine Institutes Health Search databasePMCAll DataSetsGEO Protein Web SiteNLM ClustersPubChem BioAssayPubChem CompoundPubChem termSearch Advanced Journal list Help ListSpringer Open Environmental Management . If hemlock mortality occurs in large monospecific riparian stand we hypothesize that somewhat severe localized impacts to water quality may recovery from these initial will ultimately depend rate which undisturbed species replacement can fill empty niche left by declining standing dead hemlocks. four transects in each site and two [...]

Vandermast Lear suggest introducing periodic fire into riparian forests the southern Appalachians order control Rhododendron expansion help encourage hardwood canopy tree regeneration. to determine statistical wildlife and human disturbance of temperature data loggers there are periods time when we were unable obtain valid some sites [...]

Indeed Delaware Water Gap National Recreation Area Snyder and others Ross found that hemlock dominance had strong influence species composition of aquatic invertebrates fish stream hydrology temperature regimes. on an Abies fraseri dominated stand near the summit of Mout LeCont Tennessee [...]

Ecological Applications Welch R Madden Jordan Photogrammetric and GIS techniques for the development of vegetation databases mountainous areas Great Smoky Mountains National Park. Journal of Biogeography Orwig DA Cobb RC Amato AW Kizlinski ML Foster DR Multiyear ecosystem response hemlock woolly adelgid infestation southern New England forests [...]

Immediate impacts to stream conditions caused by hemlock mortality may be similar the documented from other types of disturbances riparian forest. The contrasting results can possibly be attributed to differences riparian hemlock forest composition between GSMNP and DWGNRA study sites. As result all watersheds were classified into five terrain classes [...]

In forest with minor understory we found much higher light conditions mmol and lower foliar cover . The HWA is currently spreading across forests of eastern North America and causing mortality hemlock Tsuga canadensis Carolina caroliniana McClure . In order to avoid the influence of these data gaps we only used temperature our analyses that were consistently collected both hardwoodand sites within Water TemperatureWe found no relationship between forest type regime Table [...]

We used the Independent Samples TTest for determining differences means of nitrate concentrations discharge and pH normally distributed Kolmogorov Smirnov Z stream water temperatures not . Hach Company Loveland pp McClure MS feedback in AdelgesTsugae Homoptera Adelgidae on canadensis [...]

However the results presented in this article are good representation of stream conditions that occur with hardwoodand headwater streams GSMNP confident larger sample size would yield similar addition important to note do address impacts from hemlock mortality aesthetics recreation other flora fauna all which could be substantially affected by loss eastern forests. Science Weathers K Lovett G Likens Lathrop effect of landscape features on deposition to Hunter Mountain Catskill Mountains New York. The herbaceous layer is typically sparse with low species richness but includes Intermediate Wood Fern Dryopteris Downy Partridgeberry Mitchella repens and Christmas Polystichum acrostichoides Jenkins forest widespread throughout Park covering ha acres occurs along lower elevation streams protected slopes . The shrub layer of these forests is dominated by Rosebay Rhododendron maximum and Dog Hobble Leucothoe fontanesiana [...]

Respectively ream Discharge Stream was also similar within pairs Fig. We thank Dennis Yankee Susan Sutherland Alan Mayes at Tennessee Valley Authority Carol Harden University of for their interest guidance with this research. Springer New York pp Burton TM Likens The effect of stripcutting stream temperatures Hubbard Brook experimental Forest Hampshire. Environmental Monitoring and Assessment PubMed ZhiJun Weller Correll Jordan Effects of land cover geology stream chemistry watersheds Chesapeake Bay. respectively while streams had higher nitrate concentrations in pairs and [...]