Survival, Immigration and Habitat Quality in the Mediterranean Pine Vole

10.2307/5801 ◽  
1995 ◽  
Vol 64 (5) ◽  
pp. 579 ◽  
Author(s):  
Emmanuel Paradis
Keyword(s):  
Habitat Quality ◽  
The Mediterranean ◽  
Mediterranean Pine

Assessment of habitat quality in the Mediterranean pine vole (Microtus duodecimcostatus) by the study of survival rates

1995 ◽  
Vol 73 (8) ◽  
pp. 1511-1518 ◽  
Author(s):  
Emmanuel Paradis ◽  
Henri Croset
Keyword(s):  
Habitat Quality ◽  
Survival Rates ◽  
Population Models ◽  
Apple Orchards ◽  
High Quality ◽  
Open Population ◽  
Asynchronous Control ◽  
The Mediterranean ◽  
Microtus Duodecimcostatus ◽  
Mediterranean Pine

Habitat quality should be usefully defined in a demographic perspective. Survival and fecundity rates are sufficient to allow population persistence in a high-quality habitat but not in a low-quality habitat. The Mediterranean pine vole (Microtus duodecimcostatus) occurs in apple orchards in southern France, but its populations in this habitat are often driven to extinction by chemical control. However, recolonization occurs promptly when control ceases. We tested the hypothesis that meadows surrounding the orchards are high-quality habitats (sources) for the Mediterranean pine vole. We livetrapped four populations, three in apple orchards and one in a meadow. Survival rates were estimated using probabilistic open-population models. Our analysis led us to conclude that meadows are low-quality habitats, particularly since no juveniles survived in this habitat during the main part of the study. Recolonization of chemically controlled patches is probably allowed by asynchronous control among orchards. We further discuss the usefulness of probabilistic open-population models for the investigation of variations in survival rates both within and between populations.

scholarly journals Remote-sensing and tree-ring based characterization of forest defoliation and growth loss due to the Mediterranean pine processionary moth

2014 ◽  
Vol 320 ◽  
pp. 171-181 ◽  
Author(s):  
Gabriel Sangüesa-Barreda ◽  
J. Julio Camarero ◽  
Alberto García-Martín ◽  
Rodolfo Hernández ◽  
Juan de la Riva
Keyword(s):  
Remote Sensing ◽  
Tree Ring ◽  
Pine Processionary Moth ◽  
Processionary Moth ◽  
Growth Loss ◽  
The Mediterranean ◽  
Mediterranean Pine

Body mass dynamics in the Mediterranean pine vole Microtus duodecimcostatus

1998 ◽  
Vol 245 (3) ◽  
pp. 299-305 ◽  
Author(s):  
Emmanuel Paradis ◽  
Xiaoming Wang ◽  
Gerald Guedon ◽  
Henri Croset
Keyword(s):  
Body Mass ◽  
The Mediterranean ◽  
Microtus Duodecimcostatus ◽  
Mediterranean Pine

scholarly journals Factors influencing large-scale distribution of two sister species of pine voles (Microtus lusitanicus and Microtus duodecimcostatus): the importance of spatial autocorrelation

2009 ◽  
Vol 87 (12) ◽  
pp. 1227-1240 ◽  
Author(s):  
S. M. Santos ◽  
A. P. Mira ◽  
M. L. Mathias
Keyword(s):  
Spatial Autocorrelation ◽  
Large Scale ◽  
Acid Soils ◽  
Species Distributions ◽  
Relative Effect ◽  
Sister Species ◽  
Spatial Characteristics ◽  
The Mediterranean ◽  
Microtus Duodecimcostatus ◽  
Mediterranean Pine

The Lusitanian pine vole ( Microtus lusitanicus (Gerbe, 1879)) and the Mediterranean pine vole ( Microtus duodecimcostatus de Selys-Longchamps, 1839) are sister species with burrowing habits and a restricted European distribution. Our aim was to assess the relative effect of environmental, soil, and spatial characteristics on the distribution of these species in Portugal, and obtain predicted occurrence maps for each species, particularly to identify areas of sympatry. We used spatial eigenvector mapping (SEVM) to describe the spatial autocorrelation in species data, and we partitioned the variance in species distributions to quantify the relative effects of environmental, soil, and spatial characteristics. The spatial variables explained the major part of variability in both species distributions and were more important than environmental or soil variables. The Lusitanian pine vole occurs in areas outside landscape units of grassland, higher rainfall, frost, and cambisols, with mostly acid soils, lower abundance of litosols, and presence of solonshaks. The Mediterranean pine vole is distributed in grassland areas within intermediate values of soil pH, dominated by litosols and luvisols, and lower rainfall, frost, and cambisols. Our results showed disjunct sympatric areas of small size and a parapatry boundary for the centre of Portugal, suggesting that contact zones are probably narrow.

scholarly journals How Do Mediterranean Pine Trees Respond to Drought and Precipitation Events along an Elevation Gradient?

Forests ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 758 ◽  
Author(s):  
Sonja Szymczak ◽  
Martin Häusser ◽  
Emilie Garel ◽  
Sébastien Santoni ◽  
Frédéric Huneau ◽  
...  
Keyword(s):  
Tree Growth ◽  
Elevation Gradient ◽  
Growth Patterns ◽  
Precipitation Event ◽  
Cold Environments ◽  
Pine Trees ◽  
The Mediterranean ◽  
Mediterranean Pine ◽  
Study Sites ◽  
Precipitation Events

Drought is a major factor limiting tree growth and plant vitality. In the Mediterranean region, the length and intensity of drought stress strongly varies with altitude and site conditions. We used electronic dendrometers to analyze the response of two native pine species to drought and precipitation events. The five study sites were located along an elevation gradient on the Mediterranean island of Corsica (France). Positive stem increment in the raw dendrometer measurements was separated into radial stem growth and stem swelling/shrinkage in order to determine which part of the trees’ response to climate signals can be attributed to growth. Precipitation events of at least 5 mm and dry periods of at least seven consecutive days without precipitation were determined over a period of two years. Seasonal dynamics of stem circumference changes were highly variable among the five study sites. At higher elevations, seasonal tree growth showed patterns characteristic for cold environments, while low-elevation sites showed bimodal growth patterns characteristic of drought prone areas. The response to precipitation events was uniform and occurred within the first six hours after the beginning of a precipitation event. The majority of stem circumference increases were caused by radial growth, not by stem swelling due to water uptake. Growth-induced stem circumference increase occurred at three of the five sites even during dry periods, which could be attributed to stored water reserves within the trees or the soils. Trees at sites with soils of low water-holding capacity were most vulnerable to dry periods.

scholarly journals Swimming ability of the Mediterranean pine vole Microtus (Terricola) duodecimcostatus

1994 ◽  
Vol 39 ◽  
pp. 257-265 ◽  
Author(s):  
Stella M. Giannoni ◽  
Carlos E. Borghi ◽  
Juan P. Martinez-Rica
Keyword(s):  
Swimming Ability ◽  
The Mediterranean ◽  
Mediterranean Pine
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