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128 results found
Large floods are an important process controlling the structure and function of stream ecosystems. One of the ways floods affect streams is through the recruitment of coarse woody debris from stream-side forests. Stream valley geomorphology may mediate this interaction by altering flood velocity,…
Author(s): Brian J. Palik, Stephen W. Golladay, P. Charles Goebel, Brad W. Taylor
Keywords: coarse woody debris, riparian forest, coastal plain, flooding, tree mortality
Source: Ecoscience 5(4):551-5601
Year: 1998
Unlike annual floods, large floods affect plant species outside of bottomland ecosystems. We know little about the effects of catastrophic floods on upland plants because of the rarity of this type of disturbance. Here we report on mortality and vegetative recovery of upland longleaf pines (Pinus…
Author(s): Brain J. Palik, William K. Michener, Robert J. Mitchell, Joseph W. Jones
Keywords: coastal plain, flooding geomorphology, riparian, tree mortality
Source: Ecoscience. Vol. 6 no. 2.:p. 255-263. (1999)
Year: 1999
Dead trees, both snags (standing dead trees) and logs (downed dead trees), are critical elements of healthy and productive forests. The “Symposium on the Ecology and Management of Dead Wood in Western Forests” was convened to bring together forest researchers and managers to share the current state…
Author(s): William F. Laudenslayer, Patrick J. Shea, Bradley E. Valentine, C. Phillip Weatherspoon, Thomas E. Lisle
Keywords: cavity-dependent species, dead and down wood, dead wooddistribution, dead wood value, debris flows, logs, snags, tree mortality
Source: 1999 November 2-4; Reno, NV. Gen. Tech. Rep. PSW-GTR-181. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 949 p
Year: 2002
Cumulative and annual mortality of red spruce (Picea rubens Sarg.) and balsam fir [Abies balsamea (L) Mill.] were examined over a 10 yr period to follow the mortality patterns in unprotected spruce-fir forests in northern Maine. Different mortality patterns were determined based on stand…
Author(s): Dale S. Solomon, Lianjun Zhang, Thomas B. Brann, David S. Larrick
Keywords: budworm, defoliation, tree mortality, red spruce, balsam fir
Source: Northern Journal of Applied Forestry. 20(4): 148-153
Year: 2003
This study investigated the hypothesis that air pollution is causing mortality of the larger overstory trees, which results in a shift in species composition. To determine if the theorized shifts in species composition have occurred, this study compared historical changes in forest composition as…
Author(s): Jim Steinman
Keywords: mixed mesophytic forest, tree mortality, succession, disturbances, air pollutants
Source: USDA Forest Service NA-TP-04-99 Northeastern Area
Year: 1999
The Stand Prognosis Model is a computer program that projects the development of forest stands in the Northern Rocky Mountains. Thinning options allow for simulation of a variety of management strategies. Input consists of a stand inventory, including sample tree records, and a set of option…
Author(s): William R. Wykoff, Nicholas L. Crookston, Albert R. Stage
Keywords: growth and yield, forest management, planning, growth projection, stand models, tree increment, tree mortality
Source: Gen. Tech. Rep. INT-133. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station; 1982. 112 p.
Year: 1982
The literature on tree mortality following outbreaks of European gypsy moth was reviewed. The trends in defoliation and mortality and the influence of defoliation on mortality of individual trees and forest stands have been summarized via a regional perspective. The literature showed that: certain…
Author(s): Christopher B. Davidson, Kurt W. Gottschalk, James E. Johnson
Keywords: defoliation, tree mortality, oaks, eastern hardwoods, Quercus
Source: Gen. Tech. Rep. NE-278. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 15 p.
Year: 2001
Canopy gaps in southern Appalachian mixed-Quercus forests were characterized to assess the impact of the 1985-l988 record drought on patterns of tree mortality in relation to topographic variables and changes in overstory composition. Using permanent transects, we sampled 68 canopy gaps within the…
Author(s): B.D. Clinton, L.R. Boring
Keywords: canopy gaps, Coweta, disturbance, drought, mixed-oak forests, predisposal, southern Appalachians, tree mortality
Source: Ecology, 74(5), 1993, pp. 1551-1558
Year: 1993
Differences between Prognosis Model versions 4.0 and 5.0 are described. Additions to version 5.0 include an event monitor that schedules activities contingent on stand characteristics, a regeneration establishment model that predicts the structure of the regeneration stand following treatment, and…
Author(s): William R. Wykoff
Keywords: growth and yield, forest management, planning, growth projection, stand models, tree increments, tree mortality
Source: Gen. Tech. Rep. INT-208. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. 36 p.
Year: 1986
The effects of defoliation caused by three foliage feeding insects, the gypsy moth (Lymantria dispar), the cherry scallopshell moth (Hydria prunivorata), and the elm spanworm (Ennomos subsignarius), on tree mortality and crown conditions were evaluated using data collected from 1984 to 1999 in the…
Author(s): Randall S. Morin, Andrew M. Liebhold, Kurt W. Gottschalk
Keywords: defoliation, cherry scallopshell moth, elm spanworm, gypsy moth, tree mortality, crown dieback
Source: Northern Journal of Applied Forestry. 21(1): 31-39.
Year: 2004