http://www.srs.fs.usda.gov/pubs/20 newest publications from the US Forest Service, Southern Research Station with headquarters in Asheville, North Carolina. http://www.srs.fs.usda.gov/pubs/en-usFri, 20 Aug 2004 01:50:21 CDT http://www.srs.fs.usda.gov/pubs/31134 http://www.srs.fs.usda.gov/pubs/31134 Wed, 08 Oct 2008 16:07:37 -0400 Berenbaum, May R.; Eisner, Thomas http://www.srs.fs.usda.gov/pubs/31133 http://www.srs.fs.usda.gov/pubs/31133 0.05) over the study period between 1982 and 2003. Stepwise regression and sensitivity analysis all indicated that P was more influential than PET in affecting annual streamflow, but the similar relationship existed at the monthly scale. The sensitivity of streamflow response to variations of P and PET increased slightly with the increase in watershed dryness (PET ⁄P) as well as the increase in runoff ratio (Q⁄P). This study concluded that future changes in climate, precipitation in particular, will significantly impact water resources in the Loess Plateau region an area that is already experiencing a decreasing trend in water yield.]]> Wed, 08 Oct 2008 15:40:03 -0400 Wang, Shenping; Zhang, Zhiqiang; Sun, Ge; McNulty, Steven G.; Zhang, Huayong; Li, Jianlao; Zhang, Manliang climate variation, trend analysis, streamflow, Loess Plateau http://www.srs.fs.usda.gov/pubs/31124 http://www.srs.fs.usda.gov/pubs/31124 Wed, 08 Oct 2008 14:06:38 -0400 Scott, Jarrod J.; Oh, Dong-Chan; Yuceer, M. Cetin; Klepzig, Kier D.; Clardy, Jon; Currie, Cameron R. http://www.srs.fs.usda.gov/pubs/31122 http://www.srs.fs.usda.gov/pubs/31122 2 Dakeng watershed located in a humid subtropical mountainous region in southern China. We analyzed 27 years (i.e., 1967-1993) of streamflow and climate data and associated vegetation cover change in the watershed. Land use / land cover census and Normalized Difference of Vegetation Index (NDVI) data derived from remote sensing were used to construct historic land cover change patterns. We found that over the period of record, annual streamflow (Q) and runoff / precipitation ratio did not change significantly, nor did the climatic variables, including air temperature, Hamon's potential evapotranspiration (ET), pan evaporation, sunshine hours, and radiation. However, annual ET estimated as the differences between P and Q showed a statistically significant increasing trend. Overall, the NDVI of the watershed had a significant increasing trend in the peak spring growing season. This study concluded that watershed ecosystem ET increased as the vegetation cover shifted from low stock forests to shrub and grasslands that had higher ET rates. A conceptual model was developed for the study watershed to describe the vegetation cover-streamflow relationships during a 50-year time frame. This paper highlighted the importance of eco-physiologically based studies in understanding transitory, nonstationary effects of deforestation or forestation on watershed water balances. ]]> Wed, 08 Oct 2008 13:05:41 -0400 Sun, Ge; Zuo, Changqing; Liu, Shiyu; Liu, Mingliang; McNulty, Steven G; Vose, James M. evapotranspiration, forest hydrology, normalized difference of vegetation index, Southern China, streamflow http://www.srs.fs.usda.gov/pubs/31121 http://www.srs.fs.usda.gov/pubs/31121 Wed, 08 Oct 2008 13:01:54 -0400 Sun, Ge; Liu, Shirong; Zhang, Zhiqiang; Wei, Xiaohua http://www.srs.fs.usda.gov/pubs/31120 http://www.srs.fs.usda.gov/pubs/31120 2) in northwestern China were used for model evaluation. Model calibration and validation suggested that the model could capture the dominant runoff process of the small watershed. We found that the physically based model required calibration at appropriate scales and estimated model parameters were influenced by both temporal and spatial scales of input data. We concluded that the model was useful for understanding the rainfall-runoff mechanisms. However, more measured data with higher temporal resolution are needed to further test the model for regional applications. ]]> Wed, 08 Oct 2008 12:50:26 -0400 Zhang, Zhiqiang; Wang, Shenping; Sun, Ge; McNulty, Steven G.; Zhang, Huayong; Li, Jianlao; Zhang, Manliang; Klaghofer, Eduard; Strauss, Peter Loess plateau, Mike She, model calibration and validation, China http://www.srs.fs.usda.gov/pubs/31091 http://www.srs.fs.usda.gov/pubs/31091 Fri, 03 Oct 2008 10:54:43 -0400 Dosskey, M.G.; Helmers, M.J.; Eisenhauer, D.E. models, nonpoint source pollution, surface runoff, vegetative buffers, water quality, watershed planning http://www.srs.fs.usda.gov/pubs/31090 http://www.srs.fs.usda.gov/pubs/31090 Fri, 03 Oct 2008 10:40:32 -0400 Prestemon, Jeffrey P.; Donovan, Geoffrey H. climate, forecast, forest service, poisson, returns to research, wildfire suppression http://www.srs.fs.usda.gov/pubs/31089 http://www.srs.fs.usda.gov/pubs/31089 Fri, 03 Oct 2008 10:33:16 -0400 Boerner, Ralph E.J.; Coates, Adam T.; Yaussy, Daniel A.; Waldrop, Thomas A. deciduous forests, fire, microbial activity, restoration alternatives, soil organic carbon http://www.srs.fs.usda.gov/pubs/30960 http://www.srs.fs.usda.gov/pubs/30960 Wed, 01 Oct 2008 10:43:40 -0400 Rudis, Victor A.; Carraway, Burl; Sheffield, Raymond M. [and others] annual forest inventory, FIA, forest health indicators, forest ownership, timber volume http://www.srs.fs.usda.gov/pubs/30959 http://www.srs.fs.usda.gov/pubs/30959 Wed, 01 Oct 2008 10:32:36 -0400 Snyder, E. B., and Squillace, A. E. http://www.srs.fs.usda.gov/pubs/30907 http://www.srs.fs.usda.gov/pubs/30907 Mon, 29 Sep 2008 15:58:15 -0400 McNulty, S.G http://www.srs.fs.usda.gov/pubs/30854 http://www.srs.fs.usda.gov/pubs/30854 2 0.93, p = 0.0001 and r² 0.96, p = 0.0001, respectively). We also found that turbidity, total suspended solids, and discharge were generally related to precipitation. We will continue to monitor the watersheds to document SMZs influence on water quality and understand the hydrologic process of headwater piedmont watersheds.]]> Fri, 26 Sep 2008 10:27:12 -0400 Boggs, J.L.; Sun, G., Summer, W.; McNulty, S.G.; Swartley, W.; Treasure, E. best management practices, streamside management zones, riparian buffer, water quality http://www.srs.fs.usda.gov/pubs/30810 http://www.srs.fs.usda.gov/pubs/30810 Abies fraseri (Pursh) Poir.) have been isolated since the end of the late-Wisconsinian glaciation on the highest peaks of the Southern Appalachian Mountains and therefore offer an opportunity to investigate the genetic dynamics of a long-fragmented forest tree species. An analysis of eight microsatellite markers isolated from Fraser fir found that the species was out of Hardy– Weinberg equilibrium, with a significant deficiency of heterozygosity and a high degree of inbreeding (FIS = 0.223) relative to other conifers, perhaps associated in part with the young life stage of the trees included in the analysis. The analysis detected a significant but small amount of genetic differentiation among Fraser fir populations (FST = 0.004) and revealed that the geographical and latitudinal distances between populations, but not population area, were significantly correlated with their pairwise genetic differences. Both gene flow and postglacial migration history may have influenced the genetic architecture of the species. The results will be useful in the genetic conservation of Fraser fir, a species experiencing severe mortality following infestation by an exotic insect. ]]> Wed, 24 Sep 2008 16:43:31 -0400 Potter, Kevin M.; Framton, John; Josserand, Sedley A.; Nelson, C. Dana http://www.srs.fs.usda.gov/pubs/30788 http://www.srs.fs.usda.gov/pubs/30788 Mon, 22 Sep 2008 14:16:41 -0400 Coulston, John W.; Koch, Frank H.; Smith, William D.; Sapio, Frank J. http://www.srs.fs.usda.gov/pubs/30771 http://www.srs.fs.usda.gov/pubs/30771 Fri, 19 Sep 2008 13:21:45 -0400 McCollum, Joseph M; Cochran, Jamie K.; Rose, Anita K. FIA, forest health monitoring, global grinds, hexagon, phase 1, phase 2, phase 3, photointerpretation http://www.srs.fs.usda.gov/pubs/30765 http://www.srs.fs.usda.gov/pubs/30765 Quercus spp.) afforestation in the Lower Mississippi Alluvial Valley has involved planting 1-year-old bareroot seedlings on a relatively wide spacing in single-species stands or planting light-seeded species with oaks to form mixed-species stands. In the former case, the developing single-species stands have limited future management options because they do not provide structures that favor quality wildlife habitat or quality sawtimber production. In the latter case, species mixtures are being planted with little knowledge of subsequent stand development, leading to an inability to predict future stand composition for management purposes. In this article, we present a system to determine bottomland tree planting mixtures that will create single-cohort, mixed-species stands with a component of high-quality bottomland oak. Using individual species ecological life-history characteristics, such as early height growth pattern, relative twig diameter and durability, and developmental patterns in natural stands, bottomland species are rated for their ability to provide beneficial training effects that will lead to the development of quality oak boles. Incorporating such a system to determine species value in mixtures should provide an increased number of future options to meet explicit management objectives and promote improved restoration of bottomland hardwood ecosystems.]]> Wed, 17 Sep 2008 14:16:58 -0400 Lockhart, Brian Roy; Gardiner, Emile; Leininger, Theodor; Stanturf, John interspecific competition, intraspecific competition, mixed-species plantations http://www.srs.fs.usda.gov/pubs/30764 http://www.srs.fs.usda.gov/pubs/30764 Wed, 17 Sep 2008 14:13:24 -0400 Oswalt, SOnja N.; Oswalt, Christopher; Turner, Jeffery gulf coast, weather damage, tree mortality, inventory http://www.srs.fs.usda.gov/pubs/30763 http://www.srs.fs.usda.gov/pubs/30763 Reticulitermes flavipes (Kollar) and 2.38 colonies of R. virginicus (Banks). Nearest neighbor analysis indicated the mean distance between colonies of R. Flavipes to be 22.48 M, between colonies of R. virginicus to be 26.19m, and between colonies, irrespective of species, to be 16.80 m. Six R. flavipes colonies were selected by a ranked-set sampling method, and the mean colony size was estimated to be 244,445 termites]]> Wed, 17 Sep 2008 14:10:24 -0400 Howard, Ralph W.; Jones, Susan C.; Mauldin, Joe K.; Beal, Raymond H. http://www.srs.fs.usda.gov/pubs/30762 http://www.srs.fs.usda.gov/pubs/30762 Wed, 17 Sep 2008 13:59:35 -0400 Bowker, J.M.; Hoon Lim, Siew; Cordell, H. Ken; Green, Gary T.; Rideout-Hanzak, Sandra; Johnson, Cassandra Y. wildland fire, prescribed fire, fire management http://www.srs.fs.usda.gov/pubs/30761 http://www.srs.fs.usda.gov/pubs/30761 Wed, 17 Sep 2008 13:55:20 -0400 Nowak, John; Asaro, Christopher; Klepzig, Kier; Billings, Ronald bark beetles, forest management, cost-share incentives http://www.srs.fs.usda.gov/pubs/30759 http://www.srs.fs.usda.gov/pubs/30759 Dendroica cerulea) from 5 study sites across the range of the species from 1992 to 2006. We conducted field studies to collect data on daily nest survival, nest success, and young fledged per successful nest, and we used data to estimate fecundity. Daily nest survival, nest success, young fledged, and fecundity varied widely across the cerulean range and among years. Study sites in agriculture-dominated landscapes (Mississippi Alluvial Valley, IN, and MI, USA) had negative growth rates in all years monitored because measured values of nest success and young produced per successful nest were incapable of offsetting apparent mortality. Ontario (Canada) and Tennessee (USA) populations had greater nest success and fecundity but still appeared to be incapable of producing stable populations (k ¼ 1) under field-measured and assumed conditions. We had survival data only for one site (Ontario); thus, additional survival data are greatly needed to enable more reliable estimates of population growth. Conservation strategies for cerulean warblers in agriculture-dominated landscapes (e.g., Mississippi Alluvial Valley, IN, and MI) may require major landscape-level habitat reconfiguration to change agriculture-dominated landscapes to forest-dominated landscapes to increase fecundity. Conservation strategies in predominantly forested landscapes in the core of the range (e.g., TN) require a focus on minimizing habitat loss and developing management prescriptions capable of improving fecundity. In both cases, based on sensitivity and elasticity analyses, efforts to improve survival during the nonbreeding season would have the greatest positive effect on population growth.]]> Mon, 15 Sep 2008 16:07:58 -0400 Buehler, David A.; Giocomo, James J.; Jones, Jason; Hamel, Paul B.; Rogers, Christopher M.; Beachy, Tiffany A.; Varble, Dustin W.; Nicholson, Charles P.; Roth, Kirk L.; Barg, JEnnifer; Robertson, Raleigh J.; Robb, Joseph R.; Islam, Kamal cerulean warbler, demography, Dendroica cerulea, fecundity, population model, survival http://www.srs.fs.usda.gov/pubs/30758 http://www.srs.fs.usda.gov/pubs/30758 Mon, 15 Sep 2008 16:01:00 -0400 Roesch, Francis A. spatial-temporal sample design, estimation, forest change http://www.srs.fs.usda.gov/pubs/30747 http://www.srs.fs.usda.gov/pubs/30747 Fri, 12 Sep 2008 10:46:52 -0400 Prestemon, Jeffrey P.; Abt, Karen; Gebert, Krista US Forest Service, budget, firefighting, seemingly unrelated regression, time series, suppression cost http://www.srs.fs.usda.gov/pubs/30744 http://www.srs.fs.usda.gov/pubs/30744 Wed, 10 Sep 2008 15:12:34 -0400 Guldin, James M.; Iffrig, Greg F.; Flader, Susan L. Pioneer forest, L-A-D foundation, Leo A. Drey, uneven-aged forest management, single-tree selection, natural areas, oak-hickory, ozark highlands