نتایج جستجو برای: oak decline
تعداد نتایج: 100201 فیلتر نتایج به سال:
Brenneria goodwinii is one of the most frequently isolated Gram-negative bacteria from native oak species, Quercus robur and Q. petraea, affected by acute oak decline (AOD) in the UK. We investigated the population biology of this bacterial species using a multilocus sequence analysis to determine the population structure and evolutionary potential. Seven partial housekeeping genes were used in...
The cork oak woodland production systems result from the integration of conflicting activities in the same space creating the need of constant search of equilibrium between its components in order to achieve sustainability. In a climate change environment, associated with recent modifications in rural societies, adaptive management concepts are needed so as to maintain cork oak woodland systems...
The survival of two hygienically relevant bacteria, Escherichia coli pIE639 and Enterococcus faecium, was followed on wooden sawdust of seven different European woods (pine, spruce, larch, beech, maple, poplar, and oak) versus polyethylene chips by using cultivationdependent and molecular-based methods in parallel. The survival of the bacteria on wood was dependent on various factors such as th...
Historical reference conditions provide important context for creating ecological restoration and management plans. The U.S. 19th Century Public Land Survey (PLS) records provide extensive ecological information for constructing such reference conditions. We used PLS records to reconstruct pre-Euro-American tree species cover class and vegetation structure types for the Midwest Driftless Area, ...
The composition and temporal variation in species recruitment were examined in relation to annual dendrochronological data to determine the historical development and successional history of an old-growth mixed-oak (Quercus) forest in northern Virginia, USA. A ridge site in the upland Piedmont, along the Potomac River, was used to survey the old-growth forest, which is dominated by Quercus alba...
Holm oak is the dominant tree species in Mediterranean climate. Currently, worrisome degradation of its ecosystems has been observed, produced, among other factors, by changes land use, extreme weather events, forest fires, climate change, and especially increasingly frequent episodes high mortality caused “oak decline”, which brought with it a social concern that transcends productive interest...
Oak decline is a general term used for the progressive dieback and eventual mortality of oak trees due to many compounding stressors, typically combination predisposing, inciting, contributing factors. While pinpointing individual causes in challenge, past studies have identified site stand characteristics associated with decline. In this study, we developed risk map Daniel Boone National Fores...
The effects of girdling were analysed in a sessile oak (Quercus petraea Matts. Leibl.) forest with an 80-year-old coppice with standard structure in northern Spain. The study evaluated the viability of girdling as an alternative to felling trees during crown thinning. Eighty-four direct competitors of selected future crop trees were girdled by double notching and peeling. Three years after gird...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید