Willow (Salix spp.) is currently being researched as a source of biomass energy in Canada. However, it is not certain whether afforestation with willow plantations will enhance or diminish soil C storage and nutrient availability. Trees are known to have pronounced effects on biologically mediated nutrient cycling processes which can increase nutrient availability, but willows are known to be n...

WALKER, D. A. 1987. Height and growth rings of Salix lanata ssp. richardsonii along the coastal temperature gradient of northern Alaska. Can. J. Bot. 65: 988-993. Salix lanata ssp. richardsonii from open-tundra and streamside populations were studied at seven sites along a 100-km north-south transect following the Sagavanirktok River from the Alaskan arctic coast to the foothills of the Brooks ...

*Correspondence: Soo-Jeong Shin, Department of Wood and Paper Science, Laboratory of Plant Biomass Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763, South Korea e-mail: [email protected] To investigate the solid raw material characteristics of willow (Salix caprea) bark and woody core, this study analyzed overall chemical composition, monosaccharide composition, ash content...

Patterns have been proved useful in many problem domains. In the domain of software evolution, only behaviour-preserving patterns (e.g. refactorings) have ever been proposed. This paper proposes to broaden the scope of change patterns by means of a reification of any evolution efforts into styles. We define an evolution style as a first-class entity which is specified once and can be applied ma...

Measurements of the statistical characteristics of umbra and sunflecks at different depths inside a willow coppice — Salix viminalis and Salix dasyclados — were carried out at Tartu Observatory, Tõravere, Estonia, in 1997. A new instrument, the sunfleck indicator, constructed by M. Sulev, was used. This instrument, moving perpendicularly to rows in the horizontal direction, counts the number an...

examining the floral wreath on the mummy of the Princess Ugi-Khouni, of the twenty-first Egyptian dynasty, discovered, says Nature, at Deriel-Behan, the folded leaves of a willow (Salix Sa/so/j), perfect flowers of the corn-poppy, flower-heads of Ccntvurea deprcssa, and of Picris coronopi/olia. The flowers of the corn-poppy appear to have been gathered in an unopened condition to prevent the pe...

Salix hookeriana Barratt ex Hook., Hooker's Willow or Yakutat Willow, is illustrated. Its biological characteristics, history in cultivation and distribution are discussed. Infraspecific taxa compared, their distinctions noted.

We present a comparison of feather stable isotope ( δ 13 C, δ 15 N) patterns representing the habitat and diet conditions for two subspecies of willow warblers Phylloscopus trochilus that breed in parapatry, but winter in diff erent regions of subSaharan Africa. Previous analyses have shown that on average winter moulted innermost primaries (P1) show subspecifi c diff erences in δ 15 N values, ...