S
Steven J. Pollock
Researcher at Natural Resources Canada
Publications - 4
Citations - 260
Steven J. Pollock is an academic researcher from Natural Resources Canada. The author has contributed to research in topics: Spruce budworm & Choristoneura fumiferana. The author has an hindex of 3, co-authored 4 publications receiving 236 citations.
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Journal ArticleDOI
Fluctuations in density of an outbreak species drive diversity cascades in food webs
Eldon S. Eveleigh,Kevin S. McCann,Peter C. McCarthy,Steven J. Pollock,Christopher J. Lucarotti,Christopher J. Lucarotti,Benoit Morin,George A. McDougall,D.B. Strongman,John T. Huber,James Umbanhowar,Lucas Del Bianco Faria +11 more
TL;DR: It is shown that a complex web of interactions between insect herbivores and their natural enemies displays significant architectural flexibility over a large fluctuation in the natural abundance of the major herbivore, the spruce budworm, and it is found that this food-web flexibility tends to be greater in heterogeneous than in homogeneous forest plots.
Journal ArticleDOI
Mechanisms underlying spruce budworm outbreak processes as elucidated by a 14-year study in New Brunswick, Canada
T. Royama,Eldon S. Eveleigh,J. R. B. Morin,Steven J. Pollock,Peter C. McCarthy,G. A. McDougall,Christopher J. Lucarotti +6 more
TL;DR: A high level of correlation between the studied phase of the outbreak cycle and annual variations in the survivorship over the postdiapause period is found, suggesting that post diapause survivorship was the chief determinant of the cycle.
Journal ArticleDOI
The chalcidoid parasitoids and hyperparasitoids (hymenoptera: chalcidoidea) of choristoneura species (lepidoptera: tortricidae) in america north of mexico
TL;DR: This paper reported 51 new host records of primary parasitoids and hyperparasitoids from Choristoneura fumiferana (Clemens) collected in New Brunswick, Canada, as well as those listed in various catalogs.
Journal ArticleDOI
Identification of cocoons of Apanteles and Dolichogenidea (Hymenoptera: Braconidae) species attacking Choristoneura fumiferana (Lepidoptera: Tortricidae) and associated Microlepidoptera
TL;DR: Each species of the genera Apanteles and Dolichogenidea attacking spruce budworm, Choristoneura fumiferana Clemens, and Microlepidoptera in the same microhabitat is found to have a unique banding pattern, determined by the manner in which the density of the webbing varies along the length of the cocoon.