Logging-induced changes from preindustrial (1930) to current conditions (2002) were studied in a landscape covering 13 550 ha in eastern Quebec. Age and types of forest cover were compared between 1930 and 2002 forest maps. In addition, we compared relative species abundance between living stems and coarse woody debris to study these changes at the stand scale. More than 90% of the 1930 preindu...

Drosophila Acer (Angiotensin-converting enzyme-related) encodes a member of the angiotensin-converting enzyme family of metallopeptidases that have important roles in the endocrine regulation of blood homeostasis in mammals. Acer is expressed in the embryonic heart of Drosophila and expression in the adult head appears to be regulated by two clock genes. To study the role of Acer in development...

This research investigated the existing conditions and functionality of rows maple trees (Acer L.) (which are traditionally used in our country for urban greening) streets that most frequent terms traffic intensity, ways use measures to maintain greenery (streets I II order) on territory municipality Stari grad (Belgrade). In area a total 39 these categories were surveyed. Rows represented 2 ou...

Sycamore is a valuable tree not only economically but also ecological and culturally. Even though it has vigorous regeneration system from its stump, coppice management triggered limited formal investigations. Therefore, the present study focused on finding most suitable strategy for achieving ground coverage biomass, as well developing growth yield models sycamore maples. Using series of eight...

the study was carried out in the ilam oak forest that is located in the west part of iran. the objective of this research was to determine the plant ecological groups and site classification in this region. data were collected from 117 sample plots using the systematic-random sampling method. the size of sampling plots was 20 m?20 m for the tree and shrub species and 1.5 m ?1.5 m for herbaceous...