scholarly journals ‘Climatic factors control rodent seed predation in Pinus pinea L. stands in Central Spain’

2014 ◽  
Vol 71 (8) ◽  
pp. 873-883 ◽  
Author(s):  
Rubén Manso ◽  
Marta Pardos ◽  
Rafael Calama
Keyword(s):  
Seed Predation ◽  
Climatic Factors ◽  
Pinus Pinea ◽  
Central Spain

scholarly journals Latitudinal variation in seed predation correlates with latitudinal variation in seed defensive and nutritional traits in a widespread oak species

2019 ◽  
Vol 125 (6) ◽  
pp. 881-890 ◽  
Author(s):  
Xoaquín Moreira ◽  
Luis Abdala-Roberts ◽  
Hans Henrik Bruun ◽  
Felisa Covelo ◽  
Pieter De Frenne ◽  
...  
Keyword(s):  
Seed Predation ◽  
Plant Traits ◽  
Climatic Factors ◽  
Latitudinal Gradients ◽  
Latitudinal Variation ◽  
Seed Traits ◽  
Plant Defences ◽  
Herbivore Interactions ◽  
Plant Herbivore ◽  
Herbivore Pressure

Abstract Background and Aims Classic theory on geographical gradients in plant–herbivore interactions assumes that herbivore pressure and plant defences increase towards warmer and more stable climates found at lower latitudes. However, the generality of these expectations has been recently called into question by conflicting empirical evidence. One possible explanation for this ambiguity is that most studies have reported on patterns of either herbivory or plant defences whereas few have measured both, thus preventing a full understanding of the implications of observed patterns for plant–herbivore interactions. In addition, studies have typically not measured climatic factors affecting plant–herbivore interactions, despite their expected influence on plant and herbivore traits. Methods Here we tested for latitudinal variation in insect seed predation and seed traits putatively associated with insect attack across 36 Quercus robur populations distributed along a 20° latitudinal gradient. We then further investigated the associations between climatic factors, seed traits and seed predation to test for climate-based mechanisms of latitudinal variation in seed predation. Key Results We found strong but contrasting latitudinal clines in seed predation and seed traits, whereby seed predation increased whereas seed phenolics and phosphorus decreased towards lower latitudes. We also found a strong direct association between temperature and seed predation, with the latter increasing towards warmer climates. In addition, temperature was negatively associated with seed traits, with populations at warmer sites having lower levels of total phenolics and phosphorus. In turn, these negative associations between temperature and seed traits led to a positive indirect association between temperature and seed predation. Conclusions These results help unravel how plant–herbivore interactions play out along latitudinal gradients and expose the role of climate in driving these outcomes through its dual effects on plant defences and herbivores. Accordingly, this emphasizes the need to account for abiotic variation while testing concurrently for latitudinal variation in plant traits and herbivore pressure.

Regeneration dynamics of mixed stands of Pinus pinaster Ait. and Pinus pinea L. in Central Spain

2017 ◽  
Vol 137 (1) ◽  
pp. 17-27 ◽  
Author(s):  
Daniel Moreno-Fernández ◽  
Fernando Montes ◽  
Mariola Sánchez-González ◽  
Francisco J. Gordo ◽  
Isabel Cañellas
Keyword(s):  
Pinus Pinaster ◽  
Pinus Pinea ◽  
Central Spain ◽  
Mixed Stands ◽  
Regeneration Dynamics ◽  
Pinus Pinaster Ait

Factors influencing mercury uptake by leaves of stone pine (Pinus pinea L.) in Almadén (Central Spain)

2017 ◽  
Vol 26 (4) ◽  
pp. 3129-3137 ◽  
Author(s):  
José Ignacio Barquero ◽  
Sofía Rojas ◽  
José María Esbrí ◽  
Eva M. García-Noguero ◽  
Pablo Higueras
Keyword(s):  
Pinus Pinea ◽  
Central Spain ◽  
Stone Pine ◽  
Factors Influencing ◽  
Mercury Uptake

Wood-trait analysis to understand climatic factors triggering intra-annual density-fluctuations in co-occurring Mediterranean trees

IAWA Journal ◽  
2019 ◽  
Vol 40 (2) ◽  
pp. 241-258 ◽  
Author(s):  
Angela Balzano ◽  
Giovanna Battipaglia ◽  
Veronica De Micco
Keyword(s):  
Climatic Factors ◽  
Wood Formation ◽  
Density Fluctuations ◽  
Pinus Pinea ◽  
Environmental Drivers ◽  
Arbutus Unedo ◽  
Plant Hydraulics ◽  
Temperature And Precipitation ◽  
Adaptive Capabilities ◽  
Wood Trait

ABSTRACTMediterranean trees and shrubs form intra-annual density fluctuations (IADFs) in tree rings as a sign of their plasticity in wood formation in response to intraseasonal variations of environmental conditions. Different species show a different aptitude to form IADFs, due to their diverse ability to cope with climate stressors, since the occurrence of IADFs may affect plant hydraulics. Dendroecology and quantitative wood anatomy were used to characterise IADFs in Pinus pinea and Arbutus unedo co-occurring at a Mediterranean site in Italy. The relations between climate parameters (i.e. temperature and precipitation) and intra-annual tree-ring traits (i. e. IADF frequency and conduit size) were analysed to highlight the main triggers for IADF formation and their functional role.Data showed that both species are characterised by a high plastic response to climate and formed a high frequency of L-IADFs (occurrence of earlywoodlike conduits in latewood). The two species, although forming the same type of IADFs, showed different sensitivity to environmental factors. Pinus pinea showed a high dependence of tracheid size on temperature, while Arbutus unedo was more sensitive to precipitation in spring and autumn. Arbutus unedo promptly developed more than one IADF per year in response to rainfall events following drought periods.The overall results were useful to compare the aptitude of the two species in forming IADFs and to highlight the factors priming their formation. This is useful to understand wood growth reactions to environmental drivers and to evaluate the adaptive capabilities in these two species, and thus to predict forest reactions after climate changes.

scholarly journals Potential Factors behind the Decline of Pinus pinea Nut Production in Mediterranean Pine Forests

Forests ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1167
Author(s):  
Yara El Khoury ◽  
Elise Noujeim ◽  
Giovanni Bubici ◽  
Eustachio Tarasco ◽  
Charbel Al Khoury ◽  
...  
Keyword(s):  
Climatic Factors ◽  
Mediterranean Area ◽  
Pinus Pinea ◽  
Cone Production ◽  
Pine Nut ◽  
Leptoglossus Occidentalis ◽  
Before And After ◽  
Nut Production ◽  
Potential Factors ◽  
Mediterranean Pine

Mediterranean stone pine nut is appreciated for its high economic and nutritional value. Starting in 2012, Pinus pinea nut production declined throughout the Mediterranean area. The dry cone syndrome associated with this decline and the introduction of Leptoglossus occidentalis occurred simultaneously. This study aims to evaluate potential reasons behind the decline in pine nut production in Lebanon, considering climatic factors and the invasion of L. occidentalis. Correlation analysis was used to examine a potential relationship between cone yield and the percentage of damaged seeds per cone. Climatic variables were also tested. Two time periods were considered for analysis: before and after 2012. Cone production and the percentage of damaged seeds were negatively correlated (r = −0.42). From 2012 to 2017, cone production declined by 50% and the percentage of damaged seeds increased on average from 3% in 2012 up to 60% in 2017. Correlations were detected between cone production and the temperature of the hottest three months of the year of harvesting, and between cone production and average temperatures during the year of cone initiation. A conjunction of factors that include L. occidentalis and climatic factors might have affected the pine nut production in Lebanon.

scholarly journals A dendrochronological analysis of Pinus pinea L. on the Italian mid-Tyrrhenian coast

2013 ◽  
Vol 40 (1) ◽  
pp. 77-89 ◽  
Author(s):  
Sergio Piraino ◽  
Sergio Camiz ◽  
Alfredo Filippo ◽  
Gianluca Piovesan ◽  
Francesco Spada
Keyword(s):  
Tree Ring ◽  
Radial Growth ◽  
Climatic Factors ◽  
Climatic Variability ◽  
Regional Scale ◽  
Central Italy ◽  
Principal Component ◽  
Pinus Pinea ◽  
Site Characteristics ◽  
Dendrochronological Analysis

AbstractIn order to assess the response of the radial growth of Pinus pinea L. to climatic variability in Central Italy, dendrochronological and dendroclimatological analyses were carried out on five different populations scattered along the Tyrrhenian coasts of the peninsula. The aim of this study is to contribute to the understanding of the ecological demands of this species, particularly in the study area.For each site total ring, early-, and late-wood width chronologies were developed.Multidimensional analyses were performed for the three tree-ring datasets in order to analyze the relations between sites chronologies. Both Principal Component Analyses and hierarchical classifications highlighted an important difference of one site in respect to the other, probably due to site characteristics.Correlation functions were performed to infer the main climatic factors controlling the radial growth of the species. For a comparative study, we limited our attention to the common interval 1926–2003 (78 years) in which the response of the tree-ring chronologies to climate at both local and regional scale was investigated.Positive moisture balance in the late spring-summer period of the year of growth is the climatic driver of P. pinea radial growth in the study area. Moreover, this study shows how low summer temperatures strongly favor the radial growth of the species.

Cadmium and copper change root growth and morphology of Pinus pinea and Pinus pinaster seedlings

1994 ◽  
Vol 92 (4) ◽  
pp. 675-680 ◽  
Author(s):  
Iduna Arduini ◽  
Douglas L. Godbold ◽  
Antonino Onnis
Keyword(s):  
Root Growth ◽  
Pinus Pinaster ◽  
Pinus Pinea
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