Results 41 to 50 of about 81,384 (353)

Evidence for coal forest refugia in the seasonally dry Pennsylvanian tropical lowlands of the Illinois Basin, USA [PDF]

, 2014
The Moscovian plant macroflora at Cottage Grove southeastern Illinois, USA, is a key example of Pennsylvanian (323–299 Million years ago) dryland vegetation.
Balme, Bashforth, Bashforth, Burnham, Campbell, Chaloner, DiMichele, DiMichele, Dimitrova, Dimitrova, Dolby, Eble, Eros, Falcon-Lang, Falcon-Lang, Falcon-Lang, Farley, Feldman, Gastaldo, Gastaldo, Gastaldo, Gastaldo, Greenwood, Havinga, Hofmann, Jackson, Lyons, Mahaffy, Mander, Mander, McElwain, Pfefferkorn, Prentice, Ravn, Ravn, Scheihing, Smith, Spicer, Stewart, Sugita, Van Hoof, Willard   +41 more
core   +4 more sources

Managing understory light conditions in boreal mixedwoods through variation in the intensity and spatial pattern of harvest: A modelling approach [PDF]

, 2011
In the context of partial harvesting, adequately managing post-harvest light conditions are essential to obtain a desired composition of tree species regeneration. The objective of this study was to determine how varying the intensity and spatial pattern
Astrup, Aubin, Barkman, Bartemucci, Battaglia, Beaudet, Bergeron, Bergeron, Blanco, Bourgeois, Brais, Brian D. Harvey, Brunner, Burns, Canham, Canham, Canham, Canham, Carlson, Chen, Christian Messier, Claveau, Coates, Coates, Comeau, Comeau, Courbaud, Daniel D. Kneeshaw, Environment Canada, Frazer, Gauthier, Gersonde, Haeussler, Hale, Harvey, Harvey, Julie Poulin, K. David Coates, Kneeshaw, Koop, Lapointe, Lieffers, Lieffers, Lieffers, Man, Marilou Beaudet, Martens, Martin-DeMoor, Messier, Messier, Mizunaga, Palik, Paquette, Parent, Peng, Piboule, Pothier, Prévost, Puettmann, Robitaille, Sharma, Sonohat, Sprugel, Stadt, Suzanne Brais, Thorpe, Vieilledent, Vincent, Wright, Yves Bergeron   +69 more
core   +1 more source

Conifers

Bulletin of popular information - Arnold Arboretum, Harvard University., 1919
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +7 more sources

High‐elevation endemic plants predicted to lose habitat from changing climate in Washington State

American Journal of Botany, EarlyView.
Abstract Premise High‐elevation plants face unique challenges from potential climate change impacts that will likely require upslope migration into increasingly smaller suitable habitat. This situation is particularly acute for endemic species that by definition occupy small geographic ranges.
Nicholas L. Gjording, Erik W. Ertsgaard, David E. Giblin, Iris H. Dimpsey, Owen B. Bard   +4 more
wiley   +1 more source

Charred conifer remains from the Late Oligocene – Early Miocene of Northern Hesse (Germany)

Acta Palaeobotanica, 2018
Fire is an important constituent of many modern and fossil ecosystems. During the last decades a large number of studies have dealt with fires in pre-Cenozoic ecosystems. Evidence for the occurrence of Palaeogene and Neogene wildfires (e.g.
DIETER UHL, ANDRÉ JASPER
doaj   +1 more source

Detailed Seed Cone Morpho-Anatomy Provides New Insights into Seed Cone Origin and Evolution of Podocarpaceae; Podocarpoid and Dacrydioid Clades

Plants, 2023
The study of reproductive morphology and trait evolution provides a vital insight to understand the evolutionary history of plants. The conifer family Podocarpaceae has a remarkable diversity of seed cones, with distinct morphology among the genera and ...
Raees Khan, Robert S. Hill, Veit M. Dörken, Ed Biffin   +3 more
doaj   +1 more source

Abundant and rare spiders on tree trunks in German forests (Arachnida, Araneae) [PDF]

, 2011
The spider fauna active on the bark of trees in forests on eight sites in different regions in Germany was investigated. Trunk eclectors at about 2-4 meters height on living trees were used in different regions of Germany (SW Bavaria, Hesse, Brandenburg)
Blick, Theo
core   +2 more sources

Enzymes of Glyoxylate in Conifers [PDF]

Plant Physiology, 1968
The high level of lipids in seeds of some species of conifers suggested that the glyoxylate cycle might have a role in conifer seed metabolism.Six species (Pinus pinea, Pinus pinaster, Pinus canariensis, Pinus strobus, Abies alba, and Cupressus sempervirens) were investigated for their lipid content and malate synthase and isocitrate lyase level.
A M, Firenzuoli, P, Vanni, E, Mastronuzzi, A, Zanobini, V, Baccari   +4 more
openaire   +2 more sources

Optimized Selenium‐Doped Nanocomposites for Enhanced Polymer Gel Performance in Permeability Reduction

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Excessive water production in mature oil fields necessitates robust shut‐off treatments, yet conventional polymer gels often fail under high‐temperature and high‐salinity conditions. This study aims to enhance gel thermal stability and mechanical strength by incorporating selenium‐doped Ag/AgO–ZnO nanocomposites synthesized via a novel green ...
Fadhil F. Sead, Farag M. A. Altalbawy, M. Sudhakara Reddy, Badri Narayan Sahu, Sridharan Sundharam, Sanjeev Kumar, Atreyi Pramanik, Aseel Smerat, Fatimah Pashtun   +8 more
wiley   +1 more source

Tiarosporella species: Distribution and significance [PDF]

Glasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2003
The genus Tiarosporella consists of eight species of which four occur on conifers. These fungi differ in conidial size and in the form of appendages that occur on the distal end of the conidia (pycnospore).
Karadžić Dragan
doaj   +1 more source