Results 31 to 40 of about 3,264 (215)

Differential growth and rooting of upland and peatland black spruce, Picea mariana, in drained and flooded soils

, 2007
A reciprocal experiment was analyzed to determine whether 30 open-pollinated families of peatland and upland populations of black spruce [Picea mariana (Mill.) B.S.P.] sampled from a single area in north-central Alberta, Canada, performed consistently ...
Yeh, F.C., Yang, R.C.
core   +1 more source

Hyperspectral species maps and LiDAR‐based structured population models show future forest fire frequency may compromise forest resilience

Remote Sensing in Ecology and Conservation, EarlyView.
Monitoring forest recovery from disturbances at scale requires tracking tree dynamics, yet traditional ground‐based approaches are resource‐intensive. We present a pipeline to parameterize integral projection models (IPMs) using LiDAR data and hyperspectral‐based species maps to assess post‐fire recovery across large, forested areas at the Caribou ...
Jessica McLean, Tommaso Jucker, Alice Rosen, Sean M. McMahon, Roberto Salguero‐Gómez   +4 more
wiley   +1 more source

Maximizing the detection probabilities of dusky grouse for population monitoring

Wildlife Biology, EarlyView.
Despite its status as a game species in the western USA, rigorous monitoring of dusky grouse Dendragapus obscurus populations is limited. Obtaining an adequate number of observations for effective population monitoring of dusky grouse is challenging due to difficult‐to‐reach montane habitats, cryptic behaviors, and limited personnel, time, and funds at
Elizabeth A. Leipold, Claire Gower, Lance B. McNew   +2 more
wiley   +1 more source

Addressing spatial variability in provenance experiments exemplified in two trials with black spruce

Journal of Forest Science, 2007
Two exemplary black spruce (Picea mariana [Mill.] B.S.P.) provenance trials were analyzed using traditional and spatial techniques. The objective was to find out possible differences between these approaches in terms of both the resulting fit-statistics ...
T. Funda, M. Lstibůrek, J. Klápště, I. Permedlová, J. Kobliha   +4 more
doaj   +1 more source

Natural root grafting in Picea mariana to cope with spruce budworm outbreaks [PDF]

Canadian Journal of Forest Research, 2016
Spruce budworm (Choristoneura fumiferana Clem.) outbreaks cause extensive mortality and growth reductions throughout boreal forests in eastern North America. As tree vulnerability to defoliation remains partially unexplained by tree and stand attributes, we hypothesized that root grafting might attenuate the negative impact of severe defoliation in ...
Salomón Moreno, Roberto Luis, Tarroux, Emilie, Desrochers, Annie   +2 more
openaire   +2 more sources

Micro‐habitat selection by boreal woodland caribou improves access to food

Wildlife Biology, EarlyView.
Bio‐logging sensors attached to radiotelemetry receivers have great potential to transform our understanding of the ecological, physiological, and energetic constraints that shape patterns of wildlife movement under field conditions. We used video camera collars to assess microhabitat selectivity by woodland caribou Rangifer tarandus in boreal forests ...
Ian D. Thompson, Philip A. Wiebe, Arthur R. Rodgers, Douglas Reid, James A. Baker, Brent R. Patterson, Eric McNeill, Romain Dejeante, John M. Fryxell   +8 more
wiley   +1 more source

Breeding of Picea mariana (Mill.) B.S.P.: seed orchard and clonal approaches.

Silva Fennica, 1991
During the past 30 years, genetics research has accumulated much information on black spruce (). The adoption of less intensive and faster plustree selection, establishment of seedling seed orchards and family selection significantly increased the rate ...
Morgenstern, E., Park, Y.
doaj   +1 more source

Short‐term growth response of jack pine and spruce spp. to wood ash amendment across Canada

GCB Bioenergy, 2020
Wood ash amendment to forest soils contributes to the sustainability of the growing bioenergy industry, not only through decreased wood ash waste disposal in landfills but also by increasing soil/site productivity and tree growth.
Caroline E. Emilson, Nicolas Bélanger, Suzanne Brais, Colin E. Chisholm, Amanda Diochon, Ruth Joseph, John Markham, Dave Morris, Ken Van Rees, Michael Rutherford, Lisa A. Venier, Paul W. Hazlett   +11 more
doaj   +1 more source

Quantifying microhabitat selection of snowshoe hares using forest metrics from UAS‐based LiDAR

Wildlife Biology, EarlyView.
Identifying the spatial and temporal scale at which animals select resources is critical for predicting how populations respond to changes in the environment. The spatial distribution of fine‐scale resources (e.g. patches of dense vegetation) are often linked with critical life‐history requirements such as denning and feeding sites.
Alexej P. K. Sirén, Franklin Sullivan, Rachel Cliché, Jeremy Goetz, Leighlan S. Prout, Jillian Kilborn, Katelyn Courtot, Michael Palace   +7 more
wiley   +1 more source

Terrestrial Photogrammetric Reconstruction of Black Spruce (Picea mariana) Tree

, 2019
This photogrammetric point cloud was constructed using a set of 12 spherical images taken at different heights at two locations around the tree. The tree is a black spruce (Picea mariana), with a diameter at breast height of 20.7 cm.
Mulverhill, C
core   +2 more sources