Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Paul E. Pulley"'
Autor:
Jeffrey W. Fitzgerald, C. N. Lovelady, Robert N. Coulson, Stephen B. Jack, Paul E. Pulley, Bryan A. McFadden
Publikováno v:
Forest Ecology and Management. 114:471-485
A fundamental and unanswered research question in landscape ecology centers on how the spatial arrangement of ecosystems influences the distribution and abundance of organisms across complex landscape mosaics. In this study our goal was to examine ho
Autor:
Robert N. Coulson, Forrest L. Oliveria, Jeffrey W. Fitzgerald, Paul E. Pulley, Kenneth M. Swain, Richard O. Flamm, David B. Drummond
Publikováno v:
Journal of Economic Entomology. 87:417-425
Proliferation is the vernacular expression commonly used to describe the process of establishment of a new southern pine beetle ( Dendroctonus frontalis Zimmermann) infestation in the vicinity of an existing one. We examined the proliferation process
Publikováno v:
Environmental Entomology. 22:62-70
The southern pine bark beetle guild [ Dendroctonus frontalis Zimmermann, D. terebrans (Olivier), Ips calligraphus (Germar), I. grandicollis (Eichhoff), and I. avulsus (Eichhoff)] uses disturbed hosts as habitat for establishment of within-tree popula
Publikováno v:
Environmental Entomology. 20:1279-1284
The goal of this paper was to examine the premise that lightning is a disturbance to pine forests that occurs with sufficient frequency to provide reliable habitat for the persistence of bark beetles. The study was conducted in the pine forest region
Publikováno v:
Environmental Entomology. 16:484-496
We describe effects of constant temperature, beetle density, and time of oviposition on aspects of development, mortality, sex ratio, and size of Ips calligraphus (Germar). Emphasis is placed on individual life stages. Relationships of median develop
Publikováno v:
Environmental Entomology. 5:375-387
Production flow system methodologies, originally developed for use in industrial quality control and electrical engineering problem solving, were adopted for use in describing the partial within-tree population system of Dendroctonus frontalis . The
Publikováno v:
Population Ecology. 18:135-145
Probability density functions for the various within-tree developmental life stages ofD. frontalis are derived. The differences between some of these distributions are discussed. The possibility of the existence of a negative feed-back mechanism whic
Publikováno v:
Population Ecology. 22:117-135
Infestations ofDendroctonus frontalis Zimm. are often observed to enlarge continuously by the colonization of new hosts in a pattern similar to a forest fire. This pattern of infestation growth presents unique problems in quantitatively estimating po
Publikováno v:
Environmental Entomology. 5:714-719
Regression equations for predicting diameter outside bark (DOBx) and bark thickness (BTx) as functions of height and diameter or bark thickness class were developed from data collected as part of a Dendroctonus frontalis population dynamics study. Th
Autor:
Robert N. Coulson, Stephen P. Cook, Thomas M. Mcardle, Paul E. Pulley, Richard O. Flamm, Terence L. Wagner
Publikováno v:
Environmental Entomology. 16:390-399
Interactions during colonization among the southern pine bark beetle guild members Dendroctonus frontalis Zimmermann, Ips avulsus (Eichhoff), and Ips calligraphus (Germar) were investigated in nine loblolly pines, Pinus taeda L. This study examined h