Results 11 to 20 of about 3,264 (215)

Ecophysiology and field performance of black spruce (Picea mariana): a review [PDF]

Annales des Sciences Forestières, 1994
Cet article presente une revue de litterature de l'ecophysiologie de l'epinette noire (Picea mariana [Mill] BSP) mettant l'accent sur les facteurs environnementaux qui affectent la photosynthese nette et la reponse des stomates. Cette revue offre une mise a jour sur l'etat actuel des connaissances sur la croissance racinaire, sur la nutrition minerale,
Lamhamedi, Ms, Bernier, Py
openaire   +3 more sources

Induction of somatic embryogenesis in excised cotyledons of Picea glauca and Picea mariana

, 1990
L'embryogenèse somatique a été obtenue à partir de cotylédons chez Picea mariana (Epinette noire) et Picea glauca (Epinette blanche). Le traitement des cotylédons en présence d'un rapport élevé (90 : 1) en benzyladénine (BA): acide napthalène acétique (ANA), une semaine avant une mise en culture sur un milieu dont le rapport auxine: cytokinine est soit
Lelu-Walter, Marie-Anne, Bornman, Chris H.   +1 more
openaire   +3 more sources

A fungal endophyte of black spruce (Picea mariana) needles is also an aquatic hyphomycete [PDF]

Molecular Ecology, 2006
AbstractAn aquatic hyphomycete, Dwayaangam sp., was isolated from superficially sterilized black spruce (Picea mariana) needles submerged in aerated water in a small glass chamber (microcosm). The internal transcribed spacer (ITS) sequence of this fungus and of a commonly encountered foliar endophyte isolated from P.
Sokolski, S., Piché, Y., Chauvet, E., Bérubé, J.A.   +3 more
openaire   +7 more sources

Radial growth of subarctic tree and shrub species: relationships with climate and association with the greening of the forest-tundra ecotone of subarctic Québec, Canada

Arctic Science, 2023
Climate change has resulted in a widespread increase in primary productivity in northern regions. This “greening” can alter terrestrial ecosystems dynamics and trigger positive climate feedbacks, but often exhibits spatial heterogeneity. Few studies have
Julie-Pascale Labrecque-Foy, Anna Gaspard, Martin Simard, Stephane Boudreau   +3 more
doaj   +3 more sources

Bridging implementation gaps to connect large ecological datasets and complex models

Ecology and Evolution, 2021
Merging robust statistical methods with complex simulation models is a frontier for improving ecological inference and forecasting. However, bringing these tools together is not always straightforward.
Ann M. Raiho, E. Fleur Nicklen, Adrianna C. Foster, Carl A. Roland, Mevin B. Hooten   +4 more
doaj   +1 more source

Divergent responses to permafrost and precipitation reveal mechanisms for the spatial variation of two sympatric spruce

Ecosphere, 2021
The ranges of black and white spruce are largely sympatric, suggesting both species have similar climate requirements. The two species, however, are highly segregated across the landscape with black spruce most common on nutrient‐poor sites with cold ...
E. Fleur Nicklen, Carl A. Roland, Roger W. Ruess, Tobias Scharnweber, Martin Wilmking   +4 more
doaj   +1 more source

Variation, coordination, and trade-offs between needle structures and photosynthetic-related traits across five Picea species: consequences on plant growth

BMC Plant Biology, 2022
Background Picea species are distributed and planted world-wide due to their great ecological and economic values. It has been reported that Picea species vary widely in growth traits in a given environment, which reflects genetic and phenotypic ...
Junchen Wang, Fangqun Ouyang, Sanping An, Lifang Wang, Na Xu, Jianwei Ma, Junhui Wang, Hanguo Zhang, Lisheng Kong   +8 more
doaj   +1 more source

Effective Conservation Decisions Require Models Designed for Purpose: A Case Study of Boreal Caribou in Ontario's Ring of Fire. [PDF]

Ecol Evol
Decision making in conservation science often relies on the best available information, but existing models are rarely reproducible, transferrable, or accessible. We sought to reproduce and evaluate the suitability of the two best available models for predicting impacts of proposed mining on boreal woodland caribou (Rangifer tarandus caribou) in ...
Dyson ME, Endicott S, Simpkins C, Turner JW, Avery-Gomm S, Johnson CA, Leblond M, Neilson EW, Rempel R, Wiebe PA, Baltzer JL, Hughes J, Stewart FEC.   +12 more
europepmc   +2 more sources

Integrating historical observations alters projections of eastern North American spruce–fir habitat under climate change

Ecosphere, 2022
Spruce–fir (Picea–Abies) forests of the North American Acadian Forest Region are at risk of disappearing from the northeastern United States and Canada due to climate change.
Caitlin Andrews, Jane R. Foster, Aaron Weiskittel, Anthony W. D'Amato, Erin Simons‐Legaard   +4 more
doaj   +1 more source

Role of green alder in boreal conifer growth: competitor or facilitator?

FACETS, 2021
Sustainable forest management implies successful regeneration after disturbances. Low N availability and competition can, however, limit tree establishment in boreal ecosystems.
Morgane Urli, Nelson Thiffault, Daniel Houle, Sylvie Gauthier, Yves Bergeron   +4 more
doaj   +1 more source