Results 91 to 100 of about 73,746 (281)
Aspects of precommercial thinning in heterogeneous forests in southern Sweden [PDF]
, 2005 The overall objective of the work underlying this thesis was to suggest and evaluate possible strategies for the tending of young heterogeneous stands of Norway spruce, Scots pine and birch in southern Sweden.
Fahlvik, Nils
core
Nearctic \u3ci\u3eAcleris\u3c/i\u3e: Resurrection of \u3ci\u3eA. Stadiana\u3c/i\u3e and a Revised Identity for \u3ci\u3eA. Semiannula\u3c/i\u3e (Lepidoptera: Tortricidae) [PDF]
, 2018 Type study showed that Acleris stadiana (Barnes & Busck), currently considered a junior synonym of A. semiannula (Robinson), is in fact a distinct taxon. Although superficially similar, these taxa differ markedly in genital structure.
Miller, William E +2 more
core +2 more sources
Wildlife Biology, EarlyView.Infectious diseases are commonly cited as significant contributors to wildlife population declines. It is, therefore, important to investigate the extent to which tools designed to mitigate the effects of infectious diseases explain wildlife responses to habitat management.
Jacob Goldman +8 more
wiley +1 more source
EDIS, 2018 River birch can grow 50 to 90 feet tall but is often seen 40 to 50 feet. It normally grows with a central leader and small-diameter, dark-colored lateral branches.
Edward Gilman +5 more
doaj
Occurrence, morphology and growth of understory saplings in Swedish forests [PDF]
, 2004 Growing demands for a multipurpose forestry leads to increased use of silvicultural systems that avoid clear-cutting. Regeneration in such systems is based on establishment and ingrowth of new seedlings under a more or less closed canopy.
Wikberg, Per-Erik
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Wildlife Biology, EarlyView.Reliable abundance estimates provide essential information in ecology, conservation and management of many wild grouse populations. In this 3‐year study, we comparatively evaluate the suitability of traditional line transect distance sampling of flushed birds versus a spatial capture–recapture survey with noninvasive DNA samples for individual ...
Henrik Brøseth +2 more
wiley +1 more source
Betula papyrifera: Paper Birch
EDIS, 2003 A native to northern areas that is grown for its beautiful white bark. An additional ornamental trait is the yellow fall leaf color. The tree is best adapted to wet and moist sites -- watch out for pests if grown in an unsuitable site.
Edward Gilman, Dennis Watson
doaj
Betula populifolia: Gray Birch
EDIS, 2003 A small, North American native tree, gray birch reaches 20 to 30 feet in height with a 10 to 20-foot spread, often forming loose, open thickets in the wild but easily trained to a single, slender trunk with an irregular, upright, pyramidal silhouette ...
Edward Gilman, Dennis Watson
doaj +1 more source
Hunting regulations and movements of alpine reindeer
Wildlife Biology, EarlyView.Most ungulate populations are regulated by hunting, and harvest rate is regulated through quotas and hunting season duration. Hunting is well known to affect behaviour of ungulates, but how annual variation in quotas and hunting season duration affects individual behaviour remains uncertain.
Atle Mysterud +3 more
wiley +1 more source
Silva Fennica, 1990 Seeds of ten different species were treated with colchicine solution during germination, to induce duplication of the chromosome set. The species included in the study were and . The total number of individually labelled, colchicine-treated trees was 1,
Särkilahti, Eliisa, Valanne, Terho
doaj +1 more source