Results 31 to 40 of about 2,694,797 (236)

Reflectance of Alaskan black spruce and white spruce foliage in relation to elevation and latitude [PDF]

Tree Physiology, 2003
Leaf reflectance at visible and near-infrared wavelengths (400-1000 nm) is related primarily to pigmentation, leaf structure and water content, and is an important tool for studying stress physiology and relationships between plants and their growth environment.
Andrew D, Richardson, Graeme P, Berlyn, Shane P, Duigan   +2 more
openaire   +2 more sources

Transcriptome mining, functional characterization, and phylogeny of a large terpene synthase gene family in spruce (Picea spp.)

BMC Plant Biology, 2011
Background In conifers, terpene synthases (TPSs) of the gymnosperm-specific TPS-d subfamily form a diverse array of mono-, sesqui-, and diterpenoid compounds, which are components of the oleoresin secretions and volatile emissions.
Dullat Harpreet K, Hamberger Britta, Jancsik Sharon, Ralph Steven G, Weisshaar Sabrina, Keeling Christopher I, Bohlmann Jörg   +6 more
doaj   +1 more source

Spruce budworm feeding and oviposition are stimulated by monoterpenes in white spruce epicuticular waxes [PDF]

Insect Science, 2016
AbstractMonoterpenes, source of the distinctive odor of conifers, are generally considered plant defensive compounds. However, they are also known to act as long‐range insect attractants, as they are volatile and permeate forest airspaces. Moreover, they are lipid soluble and can be absorbed into plant epicuticular waxes.
Ennis, Darragh, Despland, Emma, Chen, Fei, Forgione, Pat, Bauce, Eric   +4 more
openaire   +3 more sources

Quantifying harvest of barren‐ground caribou off a winter road in the Northwest Territories – An Indigenous Guardian‐led initiative

The Journal of Wildlife Management, EarlyView.
The North Slave Métis Alliance's Indigenous Guardianship Program conducted on‐the‐ground patrols monitoring caribou interactions with the Tibbitt to Contwoyto Winter road and quantify caribou harvest. Quantifying the impacts of winter roads on barren‐ground caribou herds supports community members’ commitment to safeguarding their traditional territory
Orna Phelan, Wayne Mercredi, Amelia R. Cox   +2 more
wiley   +1 more source

Foraging substrate use of American Three-toed Woodpeckers ( Picoides dorsalis ) in white spruce-dominated forests of the Black Hills of South Dakota

Avian Conservation and Ecology
Isolated, sedentary species with low population densities are at increased risk of population declines because of habitat disturbances relative to common, widely distributed species.
Amanda M Ervin, David C Pavlacky, Jr, Mark D Dixon, David Swanson   +3 more
doaj   +1 more source

Insufficient Chilling Effects Vary among Boreal Tree Species and Chilling Duration

Frontiers in Plant Science, 2017
Insufficient chilling resulting from rising winter temperatures associated with climate warming has been an area of particular interest in boreal and temperate regions where a period of cool temperatures in fall and winter is required to break plant ...
Rongzhou Man, Pengxin Lu, Qing-Lai Dang
doaj   +1 more source

Identifying forest features that increase resiliency of southern‐boundary snowshoe hare populations in Pennsylvania

The Journal of Wildlife Management, EarlyView.
Snowshoe hare population densities in Pennsylvania were greatest in early‐successional forest and densely‐understoried mature forest. Forest management that increases and maintains the amount of early‐successional forest, or that increases understory complexity in mature forest, would benefit snowshoe hares and may mitigate population declines under ...
Amanda L. Zak, Duane R. Diefenbach, Emily S. Boyd, Jessie E. Edson, Cassandra M. Miller‐Butterworth   +4 more
wiley   +1 more source

Edaphic Selection Pressures as Drivers of Contrasting White Spruce Ectomycorrhizal Fungal Community Structure and Diversity in the Canadian Boreal Forest of Abitibi-Témiscamingue Region.

PLoS ONE, 2016
Little is known about edaphic selection pressures as drivers of contrasting white spruce ectomycorrhizal fungal community structure and diversity in the Canadian boreal forest.
Martin B Nadeau, Damase P Khasa
doaj   +1 more source

FennoTraits: dataset of plant functional traits and community composition in northern European flora

Nordic Journal of Botany, EarlyView.
We present here FennoTraits, a dataset of plant functional trait and community composition data collected from Fennoscandia across northern Finland, Norway, and Sweden in 2016–2025. This dataset has 42 049 abundance estimations and 155 794 site‐level functional trait observations from 10 traits representing 373 vascular plant species collected from ...
Pekka Niittynen, Julia Kemppinen
wiley   +1 more source

Birds among us: Perceptions of bird‐mediated services and disservices in a northern city

People and Nature, EarlyView.
Abstract Birds can benefit people or cause harm. Understanding how people perceive birds in cities, where most daily interactions among people and nature occur, could inform decision‐making in support of biodiversity and human well‐being We distributed a survey in a growing mid‐sized city (Lahti, Finland) to evaluate which bird‐mediated ecosystem ...
Liba Pejchar, Michelle García‐Arroyo, Miguel Á. Gómez‐Martínez, Ian MacGregor‐Fors   +3 more
wiley   +1 more source