Diameter and death of whorl and interwhorl branches in Atlas cedar (<Emphasis Type="Italic">Cedrus atlantica</Emphasis> Manetti): a model accounting for acrotony

• Introduction   

Branch size and branch status (dead or alive) are important characteristics closely related to tree growth and wood quality. The aim of this study was to design models for the diameter and status of branches in Atlas cedar (Cedrus atlantica Manetti).     

Effects of shrub and canopy cover on the relative growth rate of <Emphasis Type="Italic">Pinus pinaster</Emphasis> Ait. seedlings of different sizes

• Introduction   

Shrubs are recognized as important tree regeneration niches. In this study, we experimentally analysed the effects of shrub presence, canopy cover (closed cover and open cover-gaps), and seedling size on Pinus pinaster growth.     

Molecular cytogenetics and flow cytometry reveal conserved genome organization in <Emphasis Type="Italic">Pinus mugo</Emphasis> and <Emphasis Type="Italic">P. uncinata</Emphasis>

• Introduction   

The most common representatives of the European mountain pine complex (Pinus mugo s.l.) are P. mugo s.s. and Pinus uncinata.     

Clonal variation in heartwood norlignans of <Emphasis Type="Italic">Cryptomeria japonica</Emphasis>: evidence for independent control of agatharesinol and sequirin C biosynthesis

• Introduction   

In Cryptomeria japonica, heartwood properties are considered to be affected by specific extractives. It remains unclear whether traits of specific heartwood compounds are under genetic control.     

Climate response of tree-ring width in <Emphasis Type="Italic">Larix sibirica</Emphasis> growing in the drought-stressed forest-steppe ecotone of northern Mongolia

• Introduction   

Siberian larch (Larix sibirica) has its southern distribution limit in Mongolia in an area of rapidly rising temperatures. Direct effects of climate on tree-ring formation due to drought stress or indirect effects via the control of insect herbivore populations are little studied.     

Estimation of tree biomass,carbon pool and net primary production of an old-growth <Emphasis Type="Italic">Pinus kesiya</Emphasis> Royle ex. Gordon forest in north-eastern India

• Background  

The data on carbon pool and biomass distribution pattern of old-growth Pinus kesiya Royle ex. Gordon forests are not available.     

Effects of thinning intensity on radial growth patterns and temperature sensitivity in <Emphasis Type="Italic">Pinus canariensis</Emphasis> afforestations on Tenerife Island,Spain

• Context   

The suitability of thinning to prevent forest growth decline as a result of global warming has not been tested extensively in Macaronesian Canary pine (Pinus canariensis Sweet ex Spreng.).     

Genetic variation and demographic contraction of the remnant populations of Mexican Caribbean pine (<Emphasis Type="Italic">Pinus caribaea</Emphasis> var. <Emphasis Type="Italic">hondurensis</Emphasis>: Pinaceae)

• Introduction   

The recognition of endangered species takes into account geographic isolation and small size of populations, as is the case of two populations of Pinus caribaea var. hondurensis distributed in México.     

Climate/growth relationships in a <Emphasis Type="Italic">Pinus cembra</Emphasis> high-elevation network in the Southern French Alps

•Introduction  

In the context of climate change, assessing climate–growth relationships is of high importance in order to understand how forest ecosystems evolve and to test climate models at regional scale.     

Genetic variation in traits affecting sawn timber recovery in plantation-grown <Emphasis Type="Italic">Eucalyptus nitens</Emphasis>

• Introduction   

There is increasing interest in managing Eucalyptus nitens plantations for sawn timber production.     

A case study of <Emphasis Type="Italic">Eucalyptus globulus</Emphasis> fingerprinting for breeding

• Introduction  

Tree genetic improvement programs usually lack, in general, pedigree information. Since molecular markers can be used to estimate the level of genetic similarity between individuals, we genotyped a sample of a Portuguese Eucalyptus globulus breeding population—a reference population of 125 individuals—with 16 microsatellites (SSR).     

Population genetic structure of <Emphasis Type="Italic">Juniperus phoenicea</Emphasis> (Cupressaceae) in the western Mediterranean Basin: gradient of diversity on a broad geographical scale

• Introduction, Material and Methods  

The genetic structure and diversity of ten natural populations of Juniperus phoenicea L. from the western part of the species range have been studied using random amplified polymorphic DNA (RAPD) markers.     

Effects of foliar nutrients and environmental factors on site productivity in <Emphasis Type="Italic">Pinus pinaster</Emphasis> Ait. stands in Asturias (NW Spain)

• Background   

The effects of foliar nutrients and environmental variables on site productivity in Maritime pine (Pinus pinaster Ait.) stands in Asturias (NW Spain) were studied.     

Canopy structure analysis for estimating forest regeneration dynamics and growth in <Emphasis Type="Italic">Nothofagus pumilio</Emphasis> forests

•Introduction   

Silviculture systems applied in Nothofagus pumilio forests are based on opening the canopy to stimulate natural regeneration by modifying light and soil moisture. The objective is to evaluate regeneration dynamics of N. pumilio along different forest canopy and solar radiation gradients.     

Seasonal variations in stem CO<Subscript>2</Subscript> efflux in the Neotropical rainforest of French Guiana

• Introduction  

Stem CO₂ efflux (E _s) is a significant component of total ecosystem respiration, but there is only scant information on seasonal variations in E _s in tropical rainforests and on the main factors explaining these variations.     

Autumn fertilization of <Emphasis Type="Italic">Quercus ilex</Emphasis> ssp. <Emphasis Type="Italic">ballota</Emphasis> (Desf.) Samp. nursery seedlings: effects on morpho-physiology and field performance

• Background   

The Holm oak (Quercus ilex ssp. ballota [Desf.] Samp.) is an evergreen tree widely distributed in the western Mediterranean Basin. Forest restoration programs using this species have enjoyed only limited success, and knowledge concerning the effect of fertilization on plant quality and post-transplantation response is sparse.     

Comparison of postfire mortality in endemic Corsican black pine (<Emphasis Type="Italic">Pinus nigra</Emphasis> ssp. <Emphasis Type="Italic">laricio</Emphasis>) and its direct competitor (<Emphasis Type="Italic">Pinus pinaster</Emphasis>)

• Introduction   

Laricio pine (Pinus nigra J.F. Arn. ssp. laricio (Poiret) Maire var Corsicana Hyl.) is a form of black pine endemic to Corsica, that may now be under threat due to current fire regimes and competition with maritime pine (Pinus pinaster Aiton).     

Distribution and plant community associations of the understory bamboo <Emphasis Type="Italic">Fargesia qinlingensis</Emphasis> in the Foping National Nature Reserve,China

• Introduction  

Fargesia qinlingensis is the primary food source for the endangered giant panda during the summer months in the Qinling Mountains, but little is known about its spatial distribution and plant community associations.     

Induction of unreduced megaspores with high temperature during megasporogenesis in <Emphasis Type="Italic">Populus</Emphasis>

Introduction  

Triploid breeding is one of the most powerful approaches for improvement of the genus Populus L. Pollination with artificial unreduced (2n) pollen was inefficiency, owing to weak competition of 2n pollen. To induce 2n megaspores and improve the efficiency of triploid production, female buds of Populus pseudo-simonii × Populus nigra ‘Zheyin3#’ were exposed to high temperature during megasporogenesis.     

Factors controlling plasticity of leaf morphology in <Emphasis Type="Italic">Robinia pseudoacacia L.</Emphasis> II: the impact of water stress on leaf morphology of seedlings grown in a controlled environment chamber

• Context  

The cause of morphological plasticity of leaves within the crowns of tall trees still debated. Whether it is driven by irradiance or hydraulic constraints is inconclusive. In a previous study, we hypothesized that water stress caused between-site and within-tree morphological variability in mature Robinia trees.