Results 51 to 60 of about 2,694,797 (236)

Effect of tree-ring detrending method on apparent growth trends of black and white spruce in interior Alaska

Environmental Research Letters, 2016
Boreal forests are critical sinks in the global carbon cycle. However, recent studies have revealed increasing frequency and extent of wildfires, decreasing landscape greenness, increasing tree mortality and declining growth of black and white spruce in ...
Patrick F Sullivan, Robert R Pattison, Annalis H Brownlee, Sean M P Cahoon, Teresa N Hollingsworth   +4 more
doaj   +1 more source

Continent‐wide population genomic structure and phylogeography of North America’s most destructive conifer defoliator, the spruce budworm (Choristoneura fumiferana)

Ecology and Evolution, 2020
The spruce budworm, Choristoneura fumiferana, is presumed to be panmictic across vast regions of North America. We examined the extent of panmixia by genotyping 3,650 single nucleotide polymorphism (SNP) loci in 1975 individuals from 128 collections ...
Lisa M. Lumley, Esther Pouliot, Jérôme Laroche, Brian Boyle, Bryan M. T. Brunet, Roger C. Levesque, Felix A. H. Sperling, Michel Cusson   +7 more
doaj   +1 more source

Visual Recognition Software for Binary Classification and Its Application to Spruce Pollen Identification. [PDF]

PLoS ONE, 2016
Discriminating between black and white spruce (Picea mariana and Picea glauca) is a difficult palynological classification problem that, if solved, would provide valuable data for paleoclimate reconstructions.
David K Tcheng, Ashwin K Nayak, Charless C Fowlkes, Surangi W Punyasena   +3 more
doaj   +1 more source

Life‐history stages and behavior influence demographic classification of moose captured on remote cameras

Wildlife Biology, EarlyView.
Obtaining accurate information on demographic states, such as the age and sex classes of animals, is an important step for monitoring wildlife populations. Traditionally, demographic data are collected from harvest, aerial surveys and telemetry studies.
Alexej P. K. Sirén, Zalmai Moheb, Emily Carlson, Adam Beiner, Michael Pfeister, Ian Doherty, Bruno López Del Hierro, Claudio López Del Hierro, Isabella Hanley, Helena Firlings, Ela Shevket, Arielle Lifton‐Jochnowitz, Lee Kantar, Scott R. McLellan, Carter Barthelman, Tammy L. Wilson   +15 more
wiley   +1 more source

Behavioral and Reproductive Response of White Pine Weevil (Pissodes strobi) to Resistant and Susceptible Sitka Spruce (Picea sitchensis)

Insects, 2010
White pine weevil (Pissodes strobi, Peck.) is a native forest insect pest in the Pacific Northwest of North America that attacks species of spruce (Picea spp.) and pine (Pinus spp.).
Jeanne A. Robert, Jörg Bohlmann
doaj   +1 more source

The Genome and Population Structure of the Spruce Beetle, Dendroctonus rufipennis (Kirby, 1837), a Transcontinental Pest of North American Spruce. [PDF]

Mol Ecol Resour
ABSTRACT The spruce bark beetle Dendroctonus rufipennis (Family: Curculionidae; Subfamily Scolytinae) is a major forest insect pest throughout the transcontinental range of spruce species (Picea spp.) in North America. Here, we present an annotated, near chromosome‐level, genome assembly of 271 Mb, with 86% of the assembly contained in 16 ...
Campbell EO, Batista PD, Lévesque-Tremblay V, Béliveau C, Bernier K, Romanenko K, Strong WB, Bleiker KP, Huber DPW, Keeling CI.   +9 more
europepmc   +2 more sources

Forest and fire drive moose (deníe) detections near their northern range limit

Wildlife Biology, EarlyView.
One way to understand species range shifts in response to anthropogenic climate change is to study populations living at the limit of climate and resource suitability. Moose Alces alces (deníe in Dënesųłıné) generally require forest–wetland landscape complexes but are increasingly seen across the forest–tundra transition at their northern range limit ...
Claudia A. Haas, Nick W. Luymes, Rosemary Hohnen, Frances E. C. Stewart   +3 more
wiley   +1 more source

Seven spruce species on a mountain site - performance, foliar nutrients, and forest floor properties in stands 20 years old

iForest - Biogeosciences and Forestry, 2019
Norway spruce is often considered to have a negative impact on a site, yet it is native to many mountain regions of Europe. The relative influence of Norway spruce on site properties has frequently been compared with that of both broadleaved and other ...
Špulák O, Kacálek D, Balcar V
doaj   +1 more source

Comparison of the Decay Behavior of Two White-Rot Fungi in Relation to Wood Type and Exposure Conditions

Microorganisms, 2020
Fungal wood decay strategies are influenced by several factors, such as wood species, moisture content, and temperature. This study aims to evaluate wood degradation characteristics of spruce, beech, and oak after exposure to the white-rot fungi ...
Ehsan Bari, Geoffrey Daniel, Nural Yilgor, Jong Sik Kim, Mohammad Ali Tajick-Ghanbary, Adya P. Singh, Javier Ribera   +6 more
doaj   +1 more source

Genetical genomics identifies the genetic architecture for growth and weevil resistance in spruce. [PDF]

PLoS ONE, 2012
In plants, relationships between resistance to herbivorous insect pests and growth are typically controlled by complex interactions between genetically correlated traits. These relationships often result in tradeoffs in phenotypic expression.
Ilga Porth, Richard White, Barry Jaquish, René Alfaro, Carol Ritland, Kermit Ritland   +5 more
doaj   +1 more source