Results 51 to 60 of about 14,898 (259)

Picea Engelmannii

open access: yesBulletin of popular information - Arnold Arboretum, Harvard University., 1916
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +5 more sources

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson   +5 more
wiley   +1 more source

Internal Structure, Kinematics, and Prehistory of Frozen Debris Lobe‐A (FDL‐A), Brooks Range, Alaska

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Frozen Debris Lobe‐A (FDL‐A)—one of hundreds of FDLs in the Brooks Range of northern Alaska—is a slow‐moving landslide in permafrost that has been the subject of research since 2008 due to its close proximity to the Dalton Highway. Here, we synthesize more than a decade's worth of climate and surface measurements of monitored FDLs, and the ...
Margaret M. Darrow   +2 more
wiley   +1 more source

Antioxidant Potential of Bark Extracts from Boreal Forest Conifers

open access: yesAntioxidants, 2013
The bark of boreal forest conifers has been traditionally used by Native Americans to treat various ailments and diseases. Some of these diseases involve reactive oxygen species (ROS) that can be prevented by the consumption of antioxidants such as ...
Jean Legault   +3 more
doaj   +1 more source

Fidicinoides picea

open access: yes, 2001
FIDICINOIDES PICEA (FIG. 7) Seasonal rhythm. From March to May, end of the dry season. Nycthemeral rhythm. From 6.30 a.m. to 7.40 p.m. with higher activity at dawn and dusk. Calling site and calling posture. Inhabited the canopy, on trunks and primary stems. Vertical movements of the abdomen coincided with amplitude modulations. Calling song.
openaire   +1 more source

Tracing change in the public perception of plants: insights from archives and social media in China

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
As urbanization accelerates, historic gardens serve as vital cultural treasures that offer spiritual and cultural support to the public. This study proposes an innovative approach that merges historical records from the Qing Dynasty with contemporary social media data to explore changes in public perceptions of these gardens.
Dong Xu   +4 more
wiley   +1 more source

ANALYSIS OF POLYMORPHISM OF ORGANELLE DNA TO ELUCIDATE THE PHYLOGEOGRAPHY OF NORWAY SPRUCE IN THE EAST EUROPEAN PLAIN

open access: yesВавиловский журнал генетики и селекции, 2015
The history of Norway spruce distribution in the East European plain is discussed with regard to the results of allele diversity survey of the mitochondrial Nad1 gene, which is maternally inherited, and the chloroplast trnT-trnF region, which is ...
E. K. Potokina   +5 more
doaj  

Glacial refugia, postglacial dynamics, and hybrid zones of Pinaceae in Eurasia captured from sedimentary ancient DNA

open access: yesEcosphere
Boreal forests cover nearly one‐third of global forest area. Glacial cycles have shaped the distribution and connectivity of modern Pinaceae genera, yet species‐level refugia, postglacial migrations, and hybridization patterns remain unclear due to ...
Stefano Meucci   +18 more
doaj   +1 more source

Composition of psocid taxocenoses (Insecta: Psocoptera) in dependence on the level of naturalness of forest ecosystems in the Žďárské vrchy hills

open access: yesJournal of Forest Science, 2003
In 1999-2000 in the Protected Landscape Area (PLA) Žďárské vrchy hills the occurrence of psocids (Psocoptera) was studied in different types of biotopes: natural forest ecosystems (stands of Fagus sylvatica with individual admixture of Abies alba, Acer ...
P. Mückstein, O. Holuša
doaj   +1 more source

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