In a previous research note (Coopersmith and Hall 1999) we described the objectives and initial research findings of the Siphon Creek (Fort St. John) Installation of Experimental Project (EP) 1077. A second EP1077 installation, Bear Mountain, will be the focus of the present report. The previous research note (PG-17) concentrated on the effects of overtopping aspen canopies on understorey spruc...

Freeze injury is one of the main limiting factors to crop production and distribution of horticultural crops. Despite the numerous research efforts devoted to reduce freezing injury, it still accounts for greater losses of fruits and vegetables than any other environmental or biological hazard and the ultimate causes determining cold hardiness remain uncertain. In temperate climates, important ...

Spatio-temporal patterns of snowmelt and flowering times affect fruiting success in Erythronium grandiflorum Pursh (Liliaceae) in subalpine western Colorado, USA. From 1990 to 1995, I measured the consistency across years of snowmelt patterns and flowering times along a permanent transect. In most years since 1993, I have monitored fruit set in temporal cohorts (early- to late-flowering groups ...

Abstract Extreme hydrological and meteorological conditions can severely affect ecosystems, parts of the economy, consequently society. These impacts are expected to be aggravated by climate change. Here we analyze compare multiple types extreme events across several domains in Europe, reveal corresponding impact signatures. We characterize distinct droughts, floods, heat waves, frosts storms o...

An innovative method against late frosts in vineyard has been developed at CIRIAF, University of Perugia. It consists an organic coating made by cotton candy and straw to prevent the vine shoots freezing due frosts. This technique already tested lab-scale with very encouraging results. paper aims experiment effect applied on young grapevine during artificially controlled frost events. A shoot c...

The cosmic ray simulator consists of a 50 L’ cylindrical stainless steel chamber. A rotable cold finger milled of a silver (111) monocrystal optimizes heat conductivity and is connected to a programmable, closed cycle helium refrigerator allowing temperature control of an attached silver wafer between 10 and 340 K (20.5 IS). Oil-free ultrahigh vacuum (UHV) conditions of ~10~r” mbar are provided...

G grown in Kentucky are subject to environmental stresses that reduce crop yield and quality, and injure and kill grapevines. Damaging critical winter temperatures, late spring frosts, short growing seasons, and extreme summer temperatures all occur with regularity in regions of Kentucky. However, despite the challenging climate, certain species and cultivars of grapes are grown commercially in...