Results 81 to 90 of about 73,746 (281)
TAXON, EarlyView.Abstract This study investigates species boundaries in the lichen genus Arctomia (Arctomiaceae, Ascomycota) using an integrative approach combining molecular phylogenetics, full Bayesian population delimitation, heuristic and model‐based species delimitation, and supervised machine learning applied to morphological data.
Stefan Ekman +2 more
wiley +1 more source
The dynamics of daily water regime of Betula pendula Roth leaves and their adaptive reaction
Інтродукція Рослин, 2010 The results of investigation water regime influence on accumulation the content of lipid peroxidation product and free proline in Betula pendula Roth leaves were shown.
N.V. Rositska, N.V. Zaimenko
doaj +1 more source
Plant phenology and seasonal nitrogen availability in Arctic snowbed communities [PDF]
, 2006 Thesis (M.S.) University of Alaska Fairbanks, 2006This study was part of the International Tundra Experiment (ITEX) and examined the effects of increased winter snow depth and decreased growing season length on the phenology of four arctic plant species (
Borner, Andrew P.
core
The Chemical Record, EarlyView.Tubular pyrolysis synthesis is a widespread method to produce activated carbons (ACs). This review focuses on the different controlling parameters of the tubular pyrolysis synthesis method and their influence on the performance of synthesized ACs, thereby considering both experimental aspects and the use of plant‐based biomasses (PBBs) as feedstock ...
Meenal Gupta +6 more
wiley +1 more source
Validation and refinement of allometric equations for roots of northern hardwoods [PDF]
, 2007 The allometric equations developed by Whittaker et al. (1974. Ecol. Monogr. 44: 233–252), at the Hubbard Brook Experimental Forest have been used to estimate biomass and productivity in northern hardwood forest systems for over three decades.
Hamburg, Steven P. +2 more
core +3 more sources
Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects
Wildlife Biology, EarlyView.Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer +8 more
wiley +1 more source
Betula pendula 'Youngii': 'Youngii' European Birch
EDIS, 2003 Youngs Weeping European Birch is graceful, weeping ornamental with wonderful yellow fall color but is susceptible to fatal attacks of bronze birch borer. The leaves are often browned by birch leaf miner.
Edward Gilman, Dennis Watson
doaj +1 more source
Orthotrichum (Orthotrichaceae, Bryopsida) in Pakistan [PDF]
, 2002 A first critical survey of the genus Orthotrichum in Pakistan is provided. The currently known geographical distributions of the species and their ecologies within Pakistan are discussed.
Gruber, Johann Peter +1 more
core
Wildlife Biology, EarlyView.Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley +1 more source
Betula nigra 'Heritage': 'Heritage' River Birch
EDIS, 2003 A North American native, `Heritage' river birch can grow 50 to 80 feet tall but is often seen at 40 to 50 feet. It will grow about 30 inches or more each year in USDA hardiness zone 7, faster in the south.
Edward Gilman, Dennis Watson
doaj