Productivity assessment studies are essential in forest operations, mainly because their results enable operational planning and rate setting, the development of equitable payment systems, environmental performance, improvements brought by technology development, optimization larger forest-based systems. This study examines productive performance fuel consumption farm-tractor based skidding ope...

Abstract We are currently witnessing significant global changes in climate conditions. cannot change the natural conditions, but with regard to sustainable landscape management, we can increase our knowledge of tree species and adapt forest management them. Surprisingly, one most affected Central Europe today is Scots pine ( Pinus sylvestris L.). The following literature review summarizes over ...

The effect of initial first-order lateral root (FOLR) groupings of northern red oak (Quercus rubra) seedlings on a high quality mesic site was followed for eleven years on a shelterwood and a clearcut area. The initial FOLR number groups were empirically determined as low (0 to 6) medium (7 to 12) and high ( 12). The shelterwood overstory was removed before the beginning of the eighth growing s...

Semiochemical-based exotic species surveys targeting forest Coleoptera have gradually expanded in North America and elsewhere. Determining how various factors affect trap catches and increase species richness in traps is important for maximizing the efficacy of survey efforts. Studies were conducted in southern Maine and New Hampshire by using ethanol and alpha-pinene as lures to determine the ...

Karlsson, LT. 2000. X f . i m r m . L usgenerulion oJ'hroadleaved lree .species in .soulhern Sweden EJJerls o$ . s i l v i r d f u m l ireafment.s mnd .seed disprsa l f rom surrounding .slnnds. Doctor's dissertation. ISSS 1401-67307 ISBN 91-576-6080-8 The objective of the present thesis was to examine the effects of silvicultural treatments and seed dispersal from surrounding stands on the esta...

the investigation was conducted on wet and dry seasons of ethiopia during the year 2012/2013 at wondo genet agricultural research center nursery site. four levels of cutting size and three levels of cutting positions were arranged in randomized complete block design with three replications. data on seedling height, branch number/seedling, root number/seedling, root weigh/seedling, root length/s...

This paper discusses cake-cutting protocols when the cake is a heterogeneous good, represented by an interval on the real line. We propose a new desirable property, the meta-envy-freeness of cake-cutting, which has not been formally considered before. Meta-envy-free means there is no envy on role assignments, that is, no party wants to exchange his/her role in the protocol with the one of any o...

This paper discusses cake-cutting protocols when the cake is a heterogeneous good that is represented by an interval in the real line. We propose a new desirable property, the meta-envy-freeness of cake-cutting, which has not been formally considered before. Though envy-freeness was considered to be one of the most important desirable properties, envy-freeness does not prevent envy about role a...

While food abundance is known to limit bird populations, few studies have simultaneously examined both temporal and habitat-related variation in food abundance for ground-foraging birds. We surveyed ground-dwelling arthropods throughout the breeding season and in three forest harvest types (clearcut, selection, and shelterwood stands managed for spruce, fir and hemlock) at the Penobscot Experim...