Barnacles of the genus Octolasmis Gray, 1825 are commonly called pedunculate
barnacles or stalked barnacles.
showed that some sessile oaks have low levels of oaklactone in the range of those assayed in pedunculate
We analyze the growth histories of healthy, declining and dead pedunculate
oaks (Quercus robar L.), to critically assess the role of factors acting behind the observed die-off.
Callan (1941) suggested that sex determination is environmentally controlled in the pedunculate
barnacle Scalpellum scalpellum (Linnaeus, 1767), based on its apparent lack of sex chromosomes.
The study site is covered by mixed forest stands dominated by 185-year-old pedunculate
oak (Quercus robur), 180-year-old Scots pine (Pinus sylvestris) and 135-year-old Norway spruce (Picea abies) (each accounting for approximately 25 % by tree volume) with birches (Betula pendula and B.
In this context and taking into account the need for preserving high proportions (minimum 60-70%) of sessile oak trees in Romanian mixed stands, the paper aims at characterising the dynamics of the process of natural mortality in two sessile oak-dominated stands including tree species with different light requirements (either hornbeam as moderate shade-tolerant or Hungarian oak and Turkey oak as light-demanding tree species but definitely less than sessile or pedunculate
oak Negulescu and Savulescu, 1957; 1965; Stanescu, 1979; Stanescu et al., 1997) as main competitors to the sessile oak trees.
Flowers 3-numerous initially crowded, then loosening, shortly or well pedunculate
; pedicels 1 mm long.
present Spike length 30-50 cm 50-80 cm proximal last pedunculate
[greater segments than or equal to] 4 cm than or equal to] 4 cm Floral bracts 1/4 imbricate, Not imbricate, partially covering not covering axis axis size 2-3 cm 1,5 -2 cm s shape Elliptic, acuminate, Oblong, ecarinate, equal or ecarinate, near 1/2 2/3 length of sepals length of sepals color Red, margins whitish ?
The pulsation coefficients of diameter growth of pedunculate
oak (Quercus robur L.) are: [[omega].sub.pd] = 0.0729927, of crown expansion uD = 0.1824817, and of height growth [[omega].sub.ph = 0.1459854.
Sessile oak (Quercus petraea [Matt] Liebl.) and pedunculate
oak (Quercus robur L.) are two closely related species that share a wide sympatric distribution over Europe.
The oaks of commercial value in Europe include Quercus petraea, which is also called sessile oak and durmast oak; and Quercus robur also known as English oak or pedunculate