Oaks (Quercus) are economically important, and their seed (acorns) a valuable food for many animals. Thus, forest managers must consider potential tradeoffs between oak growth acorn production. I used 13 years of dbh 17 trapping data on 195 trees five common eastern species to compare stand-level production closed canopy mature (M) recent shelterwood with reserves regeneration harvests (SW) (BA...

This study was conducted in fish diseases lab. / College of veterinary medicine/ university Sulaimani to evaluate the effect boiling oak as compared with raw on performance common carp at 0.05 significant level for all studied parameters. carried out C. carpio L. five treatments/ three replicates. The experimental trial consists treatments duplicates, each containing seven fish: Group 1: Diet w...

chestnut-leaved oak (quercus castaneifolia) is one of the most important industrial species of the northern forests of iran. regeneration of this valuable species is limited due to several problems such us pests and the fungal diseases. in order to isolate and identify the fungi associated with oak seed, sampling was carried out during 2007 in shast-kalate forest at gorgan. collected seeds were...

Research Highlights: The regeneration of Quercus species is usually very difficult in many oak woodlands transformed by livestock farming. Some studies have reported that shrubs can facilitate regeneration. However, the strength interaction may vary depending on, among other factors, shrub and stress tolerance species. Moreover, further are necessary to clarify relative importance two facilitat...

Curculio glandium is one of the pre-dispersal seed predators occurring in Central Europe. It associated with Quercus robur, acorns which are shelter and food sources for developing larvae. Females species, to our knowledge, lacking marking pheromones or do not use them; therefore, nature, multiple infestations (over 10 eggs larvae) same host fruit can be found. Such density provoke very strong ...

Various effects of acorn extract have been reported including antioxidant activity, cytotoxicity against cancer cells, and the levels of acetylcholine and its related enzyme activities in the dementia mouse models. However, it is unclear whether acorn extract inhibits glutamate-induced calcium signaling in hippocampal neurons. This study was an investigation into the effect of acorn extract on ...

Animals eat different foods in proportions that yield a more favorable balance of nutrients. Despite known examples of these behaviors across different taxa, their ecological and physiological benefits remain unclear. We identified a surprising dietary shift that confers ecophysiological advantages in a dung beetle species. Thorectes lusitanicus, a Mediterranean ecosystem species adapted to eat...

California valley oak is threatened by landscape alteration and failing recruitment in remnant stands. Its reproductive ecology is a key element of the seedling recruitment process. We first examine the mating system, to determine the extent of inbreeding in a population at Sedgwick Reserve, in Santa Barbara County. We then quantify variation in germination success and acorn size, evaluating th...