Morphological, anatomical, and physiological leaf traits of Corylus avellana plants growing in different light conditions within the natural reserve "Siro Negri" (Italy) were analyzed. The results highlighted capability C. to grow both sun shade throughout several adaptations at level. In particular, more than 100% higher specific area is associated a 44% lower palisade spongy parenchyma thickness ratio compared with that sun. Moreover, chlorophyll (Chl) Chl b decreased response 97% decrease...

Morphological and physiological traits of Crepis pygmaea L. subsp. Isatis apennina Ten. ex Grande growing at different altitudes in the Gran Sasso Massif (Abruzzo, Italy) were analyzed. The two populations C. I. highest altitude (C p2 I 2,310 m a.s.l. 2,350 a.s.l., respectively) had a lower leaf mass area (LMA) than lowest p1 2,250 respectively). Leaf tissue density (LTD) same LMA trend, decreasing 23 10% apennina, respectively, from to altitude. photosynthetic rates (P N) July on an average...

Limitations to plant growth imposed by the Mediterranean climate are mainly due carbon balance in response stress factors. In particular, water associated high air temperature and irradiance summer causes a marked decrease CO

Cistus salvifolius L. is the most widely spread species around Mediterranean basin. It colonizes a wide range of habitats growing from sea level to 1,800 m a.s.l., on silicolous and calcicolous soils, in sun areas as well understory wooded areas. Nevertheless, this has been mainly investigated term its responsiveness drought. Our aim was understand which leaf traits allow C. cope with low-light environments. We questioned if biochemical physiological trait variations response reduced...

Abstract Leaf trait variations in five deciduous species (Quercus robur, Corylus avellana, Populus alba, Acer campestre, Robinia pseudoacacia) growing an old broadleaf forest response to light variation within the tree crown was analyzed. Net photosynthetic rate (PN), leaf respiration (R) and nitrogen use efficiency were, on average, more than 100% higher sun shade leaves. A. campestre C. avellana leaves had highest specific area (SLA, 156.0 ± 17.9 cm2 g-1) lowest total thickness (L, 101.9...

Invasive alien plant species (IAPs) represent one of the main biological threats to biodiversity worldwide. Information about their phenotypic plasticity are needed increase awareness future invasive potential. A study in response contrasting light regimes and its quantification by a index (PI) two IAPs (Ailanthus altissima Robinia pseudoacacia) inside Strict Nature Reserve was conducted. R. pseudoacacia showed 70% higher PI, with strongly greater value at morphological leaf level,...

The relationship between net photosynthetic (P N) and leaf respiration (R) rates of Quercus ilex, Phillyrea latifolia, Myrtus communis, Arbutus unedo, Cistus incanus was monitored in the period February 2006 to 2007. species investigated had low R P N during winter, increasing from March May, when mean air temperature reached 19.2 °C. During favourable period, C. A. unedo a higher (16.4±2.4 µmol m-2 s-1) than P. Q. M. communis (10.0±1.3 s-1). highest (1.89±0.30 s-1, species), associated...

The kernel composition (moisture, ash, protein, carbohydrate, calories, fat, monounsaturated and polyunsaturated fatty acids) of two hazelnut (Corylus avellana L.) cultivars ('Tonda Gentile Trilobata' 'Tonda Romana') wild types growing in different climatic conditions (north-west central Italy) was evaluated. main component acid (65.9 ± 1.8%, mean value), the most abundant oleic (C18:1) (83.5 1.0%, value). saturated acids are minor compounds hazelnut, resulting a unsatured to (U/S) ratio 9.0...

Abstract Short‐term physiological plasticity allows plants to thrive in highly variable environments such as the Mediterranean ecosystems. In context, that maximize performance under favorable conditions, Cistus spp., are generally reported have a great cost terms of (i.e., high short‐term plasticity) due severe reduction when stress factors occur. However, spp. also show noticeable resilience ability response factors. We hypothesized species and subsequent recovery can positive trade‐off...

Seed germination capability of Adonis distorta, Androsace mathildae, Aquilegia magellensis and Campanula fragilis subsp. cavolinii endemic species the Central Apennines in Italy were analyzed. traits varied significantly among considered species. In particular, seed volume was largest Ad. distorta (91.642 ± 16.851 mm3) lowest C. (0.029 0.008 mm3). The coat thickness ranged from 31 10 µm to 9 1 µm. cavolinii. brown colored An. dark Aq. magellensis, light cream Pre-treatments carried out...

Urban landscapes are rapidly expanding globally and transforming the structure function of urban areas, thereby influencing quality life. Cities account for more than 70% energy related to global greenhouse gases, which is expected rise up 76% by 2030. Taking into that over 50% world's population lives in cities two thirds 2050, problem mitigating atmospheric CO2 concentration considerable. The areas covered parks, gardens, tree-lined avenues, sport fields, hedges important sinks carbon...

SUMMARY The aim of the study was to evaluate carbon storage capability an unmanaged old-growth deciduous forest developing inside a Natural Reserve. Our research aims emphasize how conservative management, by determining actual structure and species composition, resulted in high capability. results highlight that stores large amount (CTot = 418 Mg C ha-1) with greater pool aboveground biomass soil (42%). In particular, among most abundant species, Populus spp. Quercus robur are major sink...

Abstract An increase in the frequency and intensity of extreme climatic conditions is expected for M editerranean area as a response to climate change. As consequence, ability plant species adapt complex stressful environmental plays an important role driving their future distribution. The adaption may be expressed by ecotypes already adapted local climate. Our goal was analyse seasonal physiological behaviour five Q uercus ilex coming from different Italian geographical areas (from north...

The potential resilience of shrub species to environmental change deserves attention in those areas threatened by climate change, such as the Mediterranean Basin. We asked if leaves produced under different conditions through winter season spring can highlight leaf traits involved determining three Cistus spp. changing and what extent intraspecific differences affect a response. analysed carbon assimilation, maximum quantum efficiency PSII photochemistry (Fv /Fm ) morphological control...

Substrate salinity is one of the main abiotic factors limiting plant establishment, growth and distribution in coastal habitats. Nevertheless, few studies have investigated interaction between salt concentration duration exposure on physiology Carpobrotus edulis, an important invasive species growing dune In this study, four treatment cycles different length (three, six, twelve twenty-four days) at 0 M, 0.1 0.2 M 0.3 were imposed. A significant response was elicited after 24 days treatment....

Seed germination capability of Adonis distorta, Androsace mathildae, Aquilegia magellensis and Campanula fragilissubsp. cavolinii endemic species the Central Apennines (Italy) were analyzed. traits varied significantly amongthe considered species. In particular, seed volume was largest in (91.642 ± 16.851 mm3) lowest Campanula(0.029 0.008 mm3). The coat thickness ranged from 31 10 μm to 9 1 Campanula. Pretreatmentswere carried out improve germination. did not happen inresponse applied...