نتایج جستجو برای: dense forests

تعداد نتایج: 103454  

Journal: :Biochemical systematics and ecology 2000
Weldon Gorra Wood

The binturong (Arctictis binturong) is a large, arboreal viverrid (subfamily Paradoxurinae) with a coat of long coarse hair and a prehensile tail that inhabits the dense forests of Southeast Asia, Palawan, Sumatra, Java, and Borneo. This species, as with most Carnivora, possesses paired glands that open on both sides of the anus (Story, 1945). These anal glands are used by both sexes to scent-m...

Journal: :J. Graph Algorithms Appl. 2015
Patrizio Angelini Giordano Da Lozzo Giuseppe Di Battista Fabrizio Frati Maurizio Patrignani Ignaz Rutter

We consider drawings of graphs that contain dense subgraphs. We introduce intersection-link representations for such graphs, in which each vertex u is represented by a geometric object R(u) and each edge (u, v) is represented by the intersection between R(u) and R(v), if it belongs to a dense subgraph, or by a curve connecting the boundaries ofR(u) andR(v), otherwise. We study a notion of plana...

2003

Background As part of the Northwest Forest Plan, large areas have been designated on many federal forests in western Oregon to provide critical habitat for plants and animals that are associated with old-growth habitat. Some of the structural characteristics often considered typical of old forests include large-diameter overstory trees, large standing and fallen dead trees, and one or more unde...

Journal: :Environmental management 2011
Zhi Wei Wu Hong Shi He Yu Chang Zhi Hua Liu Hong Wei Chen

Knowledge of forest fuels and their potential fire behavior across a landscape is essential in fire management. Four customized fire behavior fuel models that differed significantly in fuels characteristics and environmental conditions were identified using hierarchical cluster analysis based on fuels data collected across a boreal forest landscape in northeastern China. Fuel model I represente...

1999
Charles B. Halpern Shelley A. Evans Sarah Nielson

During early stand development, coniferous forests of the coastal Pacific Northwest commonly pass through a period of dense shade and intense competition during which the abundance and diversity of understory plants decline dramatically. In young, managed forests, silvicultural thinning has been proposed to enhance the structural and floristic diversity of the understory. Although germination o...

Journal: :Journal of fish biology 2010
K Honda H Kagiwada N Tojo K Miyashita

The study identified seasonal habitat use by endangered adult Sakhalin taimen Hucho perryi and the environmental characteristics of their habitat (water depth, amount of riparian forest and sinuosity). Fifteen adult H. perryi with acoustic tags were tracked by towing an acoustic receiver with a canoe in the Bekanbeushi River system in eastern Hokkaido Island, Japan, during each month from late ...

2001
Elke Naumburg Laura E. DeWald Thomas E. Kolb

Recent increases in Pinus ponderosa Dougl. ex Laws. forest density in the southwestern United States have severely reduced understory herbaceous biomass and altered understory species composition. To examine whether changes in graminoid species composition are caused by increased shading, we studied the effects of shade on leaf gas exchange, biomass, and reproductive characteristics of five gra...

2013

India’s forest cover was estimated to be about 67.701 million hectares or 22.8 percent of the country’s land area and other wooded lands comprise of 4.11 million ha (UNEP Report, 2000). The dense forests in almost all the major states has been reduced and forest degradation is a matter of serious concern now. Principal plantation species such as Acacia spp., Eucalyptus spp. and Tectona grandis ...

Journal: :Carbon Balance and Management 2009
Mehraj A Sheikh Munesh Kumar Rainer W Bussmann

BACKGROUND The Himalayan zones, with dense forest vegetation, cover a fifth part of India and store a third part of the country reserves of soil organic carbon (SOC). However, the details of altitudinal distribution of these carbon stocks, which are vulnerable to forest management and climate change impacts, are not well known. RESULTS This article reports the results of measuring the stocks ...

2013
Thomas A. Waldrop Daniel A. Yaussy Ralph E.J. Boerner Cathryn H. Greenberg Dean M. Simon

The Southern Appalachian Mountains and Ohio Hills sites are unique within the National Fire and Fire Surrogate Study because they are in hardwood-dominated forests. The efficacy of four fuel-reduction treatments was evaluated to restore these unmanaged hardwood forests to the structure and function of open woodland habitats. Treatments included control, prescribed burning, mechanical, and a com...

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