scholarly journals Optimal management of Pinus radiata silvopastoral systems established on abandoned agricultural land in Galicia (north-western Spain)

Silva Fennica ◽  
2009 ◽  
Vol 43 (5) ◽  
Author(s):  
María Pasalodos-Tato ◽  
Timo Pukkala ◽  
Antonio Rigueiro-Rodríguez ◽  
Esther Fernández-Nunez ◽  
María Mosquera-Losada
Keyword(s):  
Pinus Radiata ◽  
Agricultural Land ◽  
Silvopastoral Systems ◽  
Optimal Management ◽  
Western Spain ◽  
North Western

scholarly journals Assessing site form as an indicator of site quality in even-aged Pinus radiata D. Don stands in north-western Spain

2019 ◽  
Vol 76 (4) ◽  
Author(s):  
Juan Alberto Molina-Valero ◽  
Ulises Diéguez-Aranda ◽  
Juan Gabriel Álvarez-González ◽  
Fernando Castedo-Dorado ◽  
César Pérez-Cruzado
Keyword(s):  
Pinus Radiata ◽  
Goodness Of Fit ◽  
Model Fitting ◽  
Site Index ◽  
Site Quality ◽  
Stand Age ◽  
Fit Statistics ◽  
Dominant Height ◽  
Western Spain ◽  
North Western

Abstract Key message Site form and site index have shown similar precision for estimating site quality in even-agedPinus radiataD. Don stands in north-western Spain. Additionally, SF presents the advantage that it does not require stand age information and can therefore be used in a wider set of situations in the forestry practice. Context Estimation of site quality is essential for characterizing, monitoring and predicting forest resources. Site index (i.e. the dominant height of the stand at a reference age) is ordinarily used to estimate site quality; however, this index is only useful for even-aged stands of known age. By contrast, SF is age-independent as it uses the dominant height of the stand at a reference dominant diameter. Aims The aim of this study was to compare the performance of SF and SI for site quality estimation in even-aged P. radiata stands. Methods Dynamic equations derived with the Generalized Algebraic Difference Approach (GADA) from the Hossfeld IV base model were fitted to predict site quality with both SI and SF. SF predictions were compared with SI regarding variability within the same plot and consistency in site quality predictions, using the observed maximum mean annual volume increment (MAI) as a direct measure of site quality. Results Both approaches showed good performance in model fitting and provided similar goodness-of-fit statistics and variability in the predictions. However, SI performed slightly stronger when related to MAI. Conclusion SF performed adequately in estimating site quality for even-aged P. radiata stands, with results comparable to those obtained using traditional SI.

Modeling dominant height growth of radiata pine (Pinus radiata D. Don) plantations in north-western Spain

2005 ◽  
Vol 215 (1-3) ◽  
pp. 271-284 ◽  
Author(s):  
Ulises Diéguez-Aranda ◽  
Harold E. Burkhart ◽  
Roque Rodríguez-Soalleiro
Keyword(s):  
Pinus Radiata ◽  
Radiata Pine ◽  
Height Growth ◽  
Dominant Height ◽  
Western Spain ◽  
Dominant Height Growth ◽  
North Western

Pollens of honeys from north-western Spain

1991 ◽  
Vol 30 (2) ◽  
pp. 69-73 ◽  
Author(s):  
M V Jato ◽  
A Sala-Llinares ◽  
M I Iglesias ◽  
M Suarez-Cervera
Keyword(s):  
Western Spain ◽  
North Western

scholarly journals Lack of detectable genetic isolation in the cyclic rodent Microtus arvalis despite large landscape fragmentation owing to transportation infrastructures

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Julio C. Dominguez ◽  
María Calero-Riestra ◽  
Pedro P. Olea ◽  
Juan E. Malo ◽  
Christopher P. Burridge ◽  
...  
Keyword(s):  
Population Density ◽  
Mixed Models ◽  
Landscape Fragmentation ◽  
Microtus Arvalis ◽  
Density Peaks ◽  
Genetic Patterns ◽  
Large Fluctuations ◽  
Genetic Impact ◽  
Western Spain ◽  
North Western

AbstractAlthough roads are widely seen as dispersal barriers, their genetic consequences for animals that experience large fluctuations in population density are poorly documented. We developed a spatially paired experimental design to assess the genetic impacts of roads on cyclic voles (Microtus arvalis) during a high-density phase in North-Western Spain. We compared genetic patterns from 15 paired plots bisected by three different barrier types, using linear mixed models and computing effect sizes to assess the importance of each type, and the influence of road features like width or the age of the infrastructure. Evidence of effects by roads on genetic diversity and differentiation were lacking. We speculate that the recurrent (each 3–5 generations) episodes of massive dispersal associated with population density peaks can homogenize populations and mitigate the possible genetic impact of landscape fragmentation by roads. This study highlights the importance of developing spatially replicated experimental designs that allow us to consider the large natural spatial variation in genetic parameters. More generally, these results contribute to our understanding of the not well explored effects of habitat fragmentation on dispersal in species showing “boom-bust” dynamics.

Spatial associations among tree species in a temperate forest community in North-western Spain

2010 ◽  
Vol 260 (4) ◽  
pp. 456-465 ◽  
Author(s):  
Isabel Martínez ◽  
Thorsten Wiegand ◽  
Fernando González-Taboada ◽  
José Ramón Obeso
Keyword(s):  
Tree Species ◽  
Temperate Forest ◽  
Forest Community ◽  
Spatial Associations ◽  
Western Spain ◽  
North Western

A new species of Synelmis (Annelida: Polychaeta: Pilargidae) from the continental slope off Galicia (north-western Iberian peninsula)

2007 ◽  
Vol 87 (5) ◽  
pp. 1117-1120
Author(s):  
Juan Moreira ◽  
Julio Parapar
Keyword(s):  
New Species ◽  
Iberian Peninsula ◽  
Continental Slope ◽  
Western Spain ◽  
North Western ◽  
A New Species

A new species of Synelmis (Annelida: Polychaeta: Pilargidae), Synelmis urgorrii sp. nov., is described from the continental slope off north-western Spain. The new species is characterized by having antennae, peristomial cirri and parapodial cirri cirriform, lateral antennae located in the proximal third of the prostomium, notospines starting on chaetigers 7–11, well-developed neuropodial lobe and asymmetrical furcate chaetae, those of anterior chaetigers distinctly spinulated.

scholarly journals Generalized height-diameter relationship for Pinus sylvestris plantations in North-western Spain

2005 ◽  
Vol 14 (2) ◽  
pp. 229 ◽  
Author(s):  
U. Diéguez-Aranda ◽  
M. Barrio Anta ◽  
F. Castedo Dorado ◽  
J. G. Álvarez González
Keyword(s):  
Pinus Sylvestris ◽  
Western Spain ◽  
North Western
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