Influence of Climatic Variables on Crown Condition in Pine Forests of Northern Spain

Sanz-Ros,

doi:10.1007/978-3-319-28250-3_6

Cited by 2 publications

(2 citation statements)

References 38 publications

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“…The study area is located between UTM coordinates 4.685.000 to 4.741.000 (latitude) and 342.000 to 398.000 (longitude), where the altitude ranges from 800 to 1000 m.a.s.l., the climate is Mediterranean with a slight Atlantic influence, mean temperature is 11.5 C and annual rainfall 519 mm. This area represents a transition from agricultural lands (southwards) to Cantabric Mountains (northwards), where forest lands cover 32 % of the surface, consisting of conifer, broadleaved, and mixed forests including riparian sites, and shrublands (Sanz-Ros et al 2008).…”

Section: Study Area and Sampling Methodsmentioning

confidence: 99%

Fungal endophytic communities on twigs of fast and slow growing Scots pine ( Pinus sylvestris L.) in northern Spain

et al. 2015

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Section: Study Area and Sampling Methodsmentioning

confidence: 99%

Fungal endophytic communities on twigs of fast and slow growing Scots pine ( Pinus sylvestris L.) in northern Spain

et al. 2015

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“…The soils in the affected areas are xeric Inceptisols (Xerochrept), characterized by low productivity under a xeric climate (Soil Survey Staff USDA 1987). The summer combination of high temperatures and low rainfall has been related to high defoliation levels in conifer species (Sanz-Ros et al 2008), and will undoubtedly produce a negative impact on tree physiology and growth (Borghetti et al 1998). The results of the present work suggest that stand factors, such as age, basal area, canopy openness, diameter, height or tree density, can influence canopy condition, and may also be considered predisposing factors.…”

Section: Discussionmentioning

confidence: 66%

Stand factors influencingPinus halepensisdecline in north‐western Spain

Sanz-Ros

Valladares

2016

Forest Pathology

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Summary Although decline of Aleppo pine was observed long ago and several climatic and biotic factors have been previously associated with this complex process, site factors involved in this decline remain poorly understood. The objective of the work described here was to identify site factors associated with canopy condition. Canopy condition was estimated both by a visual estimation of defoliation, and by an indirect estimation of leaf area index (LAI) and other stand‐ and light‐related parameters through the analysis of hemispherical photographs. A high percentage of damaged trees (81%) along with high levels of defoliation in plots (up to 53%) and trees (up to 85%) were recorded. Regression models showed that the site factors associated with defoliation were basal area, age, crown depth and elevation, while those associated with LAI were diameter at breast height, tree density and canopy openness. Analysis of hemispherical photographs proved to be a useful method for LAI estimation, but not for estimation of defoliation due to heterogeneous defoliation patterns caused by fungal pathogens detected in the study area. Soils and climatic conditions were common to all plots, so their influence could not be tested, but poor soil conditions and climatic restraints are known in this area, including low soil productivity, frequent summer droughts and high numbers of frost days. The results obtained suggest that several factors were associated with the decline of Pinus halepensis, including age, basal area, canopy openness, diameter, height and tree density. These factors can influence canopy condition, and thus, they might be acting as predisposing factors for the decline. The modulation of these factors is possible if suitable forest management strategies are applied, which could lead to a decrease of the decline incidence.

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Influence of Climatic Variables on Crown Condition in Pine Forests of Northern Spain

Cited by 2 publications

References 38 publications

Fungal endophytic communities on twigs of fast and slow growing Scots pine ( Pinus sylvestris L.) in northern Spain

Fungal endophytic communities on twigs of fast and slow growing Scots pine ( Pinus sylvestris L.) in northern Spain

Stand factors influencingPinus halepensisdecline in north‐western Spain

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