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102 results found
Most species occupy both high- and low-quality habitats throughout their ranges. As habitats become modified through anthropogenic change, low-quality habitat may become a more dominant component of the landscape for some species. To conserve species, information on how to assess habitat quality…
Author(s): Therese M. Donovan, Frank R, III Thompson
Keywords: ecological trap, habitat quality, landscape management, neotropical migrant songbirds, population demography, population dynamics, source-sink
Source: Ecological Applications, 11(3), 2001, pp. 871-882
Year: 2001
Foliage quality may decline in deciduous trees following defoliation, thus affecting the insect generation responsible for the herbivory (rapid induced resistance, RIR), or future generations (delayed induced resistance, DIR). During outbreaks, trees often suffer partial or complete defoliation…
Author(s): Dylan Parry, Daniel A. Herms, William J. Mattson
Keywords: defoliation, induced resistance, Malacosoma disstria, parasitoids, plant-herbivore interactions, population dynamics, Populus tremuloides, tachinid flies, tent caterpillars, top-down and bottom-up, tritrophic
Source: Ecology 84(7):1768-1783
Year: 2003
Simultaneous and sequential per os inoculations of gypsy moth larvae with the Lymantria dispar nuclear polyhedrosis virus (LdNPV) and a Nosema sp. from Portugal demonstrated that the interaction of two pathogens during coinfection was variable, ranging from synergistic to antagonistic.…
Author(s): Leah S. Bauer, Deborah L. Miller, Joseph V. Maddox, Michael L. McManus
Keywords: Lymantria dispar, gypsy moth, Nosema sp. from Portugal, nuclear polyhedrosis virus, biological control, pathogen interactions, gypsy moth viral epizootic, population dynamics
Source: Journal of Invertebrate Pathology. Vol. 74 no.1.:p. 147-153. (1998)
Year: 1998
This proceeding contains contributions from each author or group of authors who presented their current research at the bark beetle genetics workshop held 17-18 July 1998 on the campus of the University of Wisconsin in Madison, wisconsin, USA. This was the second meeting on this subject; the first…
Author(s): Robert A. Haack, Therese M. Poland, Jian Wu, Hui Ye
Keywords: Scolytidae, molecular genetics, genetic variation, behavior, pheromones, natural enemies, host selection, population dynamics, phylogeny, systematics
Source: Proceedings of a workshop on bark beetle genetics: current status of research; 1998 July 17-18; Madison, WI. Gen. Tech. Rep. PNW-GTR-466. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 63 p.
Year: 1999
The seasonal abundance and population dynamics of Agrilus planipennis Fairmaire (Coleoptera: Buprestidae) and its natural enemies Oobius agrili Zhang and Huang (Hymenoptera: Encyrtidae) and Tetrastichus planipennisi Yang (Hymenoptera: Eulophidae) were studied on ash (Fraxinus spp.) in northeastern…
Author(s): Houping Liu, Leah S. Bauer, Tonghai Zhao, Ruitong Gao, Liwen Song, Qingshu Luan, Ruozhong Jin, Changqi Gao
Keywords: Agrilus planipennis, Oobius agrili, Tetrastichus planipennisi, Fraxinus spp, seasonal abundance, population dynamics, biological control
Source: Biological Control. 42: 61-71.
Year: 2007
Forest planners must evaluate how spatiotemporal changes in habitat amount and configuration across the landscape as a result of timber management will affect species' persistence. However, there are few long-term programs available for evaluation. We investigated the response of male Kirtland's…
Author(s): Deahn M. Donner, Christine A. Ribic, John R. Probst
Keywords: Kirtlands Warbler, habitat loss and fragmentation, landscape structure, temporal variability, population dynamics, landscape ecology, habitat amount threshold
Source: Forest Ecology and Managment. 258: 1093-1101.
Year: 2009
This collection of 22 papers summarizes the current state of knowledge on Northern Goshawks (Accipiter gentilis) within the scientific and management communities. The proceedings are presented in three sections. Research Approaches and Management Concepts contains overviews of research and…
Author(s): William M. Block, Michael L. Morrison, Hildegard Reiser
Keywords: Northern Goshawk, Accipiter gentilis, population dynamics, habitat selection, forest management
Source: Studies in Avian Biology. 16. 136 p.
Year: 1994
Populations of the red-cockaded woodpecker (Picoides borealis) have experienced massive declines since European colonization of North America. This is due to extensive habitat loss and alteration. Logging of old-growth pine forests and alteration of the fire regime throughout the historic range of…
Author(s): D. Craig Rudolph, Richard N. Conner, Jeffrey R. Walters
Keywords: Management, Picoides borealis, population dynamics, prescribed fire, recovery strategy, red-cockaded woodpecker
Source: Red-cockaded woodpecker recovery: An integrated strategy. In: Costa, Ralph; Daniels, Susan J., eds. Red-cockaded woodpecker: Road to recovery. Blaine, WA: Hancock House Publishers: 70-76.
Year: 2004
This summary of the white spruce literature covers the structure, site relations, population dynamics, and cultural practices applicable to established plantations in the Lake States. The objective of this paper is to assemble and organize all information relevant to the silviculture, growth, and…
Author(s): H. Michael Rauscher
Keywords: volume equations, biomass equations, stand structure, site relations, population dynamics, cultural practices, white spruce
Source: Research Paper NC-253. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Year: 1984
This international proceedings focuses on the biology, ecology, and evolution of gall-forming insects and their uniquely specialized relationships with their host plants. The individual contributions range in scope from detailed descriptive to profoundly theoretical, synthetic studies. One…
Author(s): Peter W. Price, William J. Mattson, Yuri N. Baranchikov
Keywords: host plant resistance, tritrophic interactions, speciation, interspecies hybrids, plant stress, population dynamics, plant phenology, life history strategies, competition
Source: General Technical Report NC-174. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Year: 1994