Results 11 to 20 of about 3,567 (170)

Carbon allocation during defoliation: testing a defence-growth trade-off in balsam fir [PDF]

Frontiers in Plant Science, 2015
During repetitive defoliation events, carbon can become limiting for trees. To maintain growth and survival, the resources have to be shared more efficiently, which could result in a trade-off between the different physiological processes of a plant. The
Annie eDeslauriers, Laurie eCaron, Sergio eRossi   +2 more
doaj   +2 more sources

Responses of isolated balsam-fir stem segments to exogenous ACC, IAA, and IBA [PDF]

Forestry Research
In this investigation, the effects of exogenous indole-3-acetic acid (IAA), indole-3-butyric acid (IBA), and 1-aminocyclopropane-1-carboxylic acid (ACC) on anatomical development within cultured segments of Abies balsamea (L.) Mill.
Rodney Arthur Savidge
doaj   +2 more sources

Transmission of a Gammabaculovirus within Cohorts of Balsam Fir Sawfly (Neodiprion abietis) Larvae

Insects, 2012
Nucleopolyhedroviruses (NPV: Gammabaculovirus: Baculoviridae) of diprionid sawflies (Diprionidae: Hymenoptera) are highly host specific and only infect the midgut epithelium.
Christopher J. Lucarotti, Roger Graves, Dan T. Quiring   +2 more
doaj   +2 more sources

Persistence of balsam fir and black spruce populations in the mixedwood and coniferous bioclimatic domain of eastern North America [PDF]

Ecology and Evolution, 2019
Yassine Messaoud, Venceslas Goudiaby, Yves Bergeron   +2 more
exaly   +2 more sources

An integrated framework to identify and characterize regional-scale insect dispersal. [PDF]

Ecol Appl
Abstract Forest pest insects cause major socio‐economic impacts, global losses of millions of dollars, and ecosystem changes. A key challenge for their management is tracing regional dispersal events critical to outbreak dynamics. We developed an integrated tracing framework for pest insects by combining isotope geolocation, ecological data, and ...
Dargent F, Reich MS, Miller M, Studens K, Benvidi N, Perrault K, Aibueku J, Holmes B, Bataille CP, Candau JN.   +9 more
europepmc   +2 more sources

Does the type of silvicultural practice influence spruce budworm defoliation of seedlings?

Ecosphere, 2021
Spruce budworm (Choristoneura fumiferana (Clem)) is the main defoliator in the boreal forest of North America, and its outbreaks have major ecological and economic consequences and represent a challenge for forest management.
Janie Lavoie, Miguel Montoro Girona, Guillaume Grosbois, Hubert Morin   +3 more
doaj   +1 more source

Spatiotemporal Dynamics of 20th-Century Spruce Budworm Outbreaks in Eastern Canada: Three Distinct Patterns of Outbreak Severity

Frontiers in Ecology and Evolution, 2021
Spruce budworm (SBW) outbreaks are a major disturbance in North American forests. In Quebec, Canada, the recent history of SBW outbreaks at the local scale is well-known.
Cassy Berguet, Maxence Martin, Dominique Arseneault, Hubert Morin   +3 more
doaj   +1 more source

Effects of a warmer climate and forest composition on soil carbon cycling, soil organic matter stability and stocks in a humid boreal region [PDF]

SOIL, 2022
The maintenance of the large soil organic carbon (SOC) stocks of the boreal forest under climate change is a matter of concern. In this study, major soil carbon pools and fluxes were assessed in 22 closed-canopy forests located along an elevation and ...
D. Paré, J. Laganière, G. R. Larocque, R. Boutin   +3 more
doaj   +1 more source

Landscape‐scale patterns of eastern spruce budworm outbreak risk: Defoliation onset vs. tree mortality

Ecosphere, 2023
The stand‐level risk of both defoliation and mortality due to the spruce budworm (Choristoneura fumiferana, Clem., SBW) is mainly linked to the quality of the resource such that stands dominated by the primary host species, balsam fir (Abies balsamea [L.]
Pierce McNie, Daniel Kneeshaw, Élise Filotas   +2 more
doaj   +1 more source

Aerial spraying of bacterial insecticides to control spruce budworm defoliation leads to reduced carbon losses

Ecosphere, 2020
Spruce budworm (SBW) outbreaks are a major natural disturbance in boreal forests of eastern North America. During large‐scale infestations, aerial spraying of bacterial insecticides is used to suppress local high‐density SBW populations.
Zelin Liu, Changhui Peng, Louis De Grandpré, Jean‐Noël Candau, Timothy Work, Xiaolu Zhou, Daniel Kneeshaw   +6 more
doaj   +1 more source