Post-Fire Colonization of a Mediterranean Forest Stand by Epiphytic Lichens

1999 ◽  
Vol 31 (04) ◽  
pp. 389 ◽  
Author(s):  
Angels Longán ◽  
Ester Gaya ◽  
Antonio Gómez-Bolea
Keyword(s):  
Forest Stand ◽  
Mediterranean Forest ◽  
Epiphytic Lichens

Post-Fire Colonization of a Mediterranean Forest Stand by Epiphytic Lichens

1999 ◽  
Vol 31 (4) ◽  
pp. 389-395 ◽  
Author(s):  
Angels Longán ◽  
Ester Gaya ◽  
Antonio Gómez-Bolea
Keyword(s):  
Quercus Ilex ◽  
Common Species ◽  
Forest Stand ◽  
Mediterranean Forest ◽  
Total Biomass ◽  
Epiphytic Lichens ◽  
Lichen Diversity ◽  
Cistus Albidus ◽  
Suitable Substratum ◽  
Ne Spain

AbstractThe post-fire colonization of a Quercus ilex forest by epiphytic lichens has been studied in Catalonia (NE Spain), eleven years after a fire. Specific richness and lichen biomass have been studied separately on Quercus ilex, Erica arborea, Rosmarinus officinalis. and Cistus albidus, to reveal possible differences among phorophytes in facilitating lichen establishment. Shrubs play an important role in colonization by common species whereas the stools of Quercus ilex offer a suitable substratum for rarer species. Cistus albidus, with the highest lichen diversity and 98·2% of the total biomass of macrolichens, is the most suitable phorophyte for lichen establishment.

Litter fall of epiphytic macrolichens in two old Picea abies forests in Sweden

1985 ◽  
Vol 63 (5) ◽  
pp. 980-987 ◽  
Author(s):  
Per-Anders Esseen
Keyword(s):  
Standing Crop ◽  
Annual Variation ◽  
Length Distribution ◽  
Forest Stand ◽  
Epiphytic Lichens ◽  
Litter Fall ◽  
Alectoria Sarmentosa ◽  
Usnea Longissima ◽  
Tree Litter ◽  
Thallus Length

The seasonal and annual variation in the litter fall of epiphytic lichens and tree litter was studied over a period of 2 to 3 years at two forested hills in the eastern part of central Sweden. Litter fall was measured using traps and for one species, Usnea longissima, by collecting specimens present on the ground. Total litter fall amounted to 2.5 and 2.8 tons ha−1 year−1 of which lichens constituted 4.6 and 5.7% at the two sites. Lichen litter fall was highest during the period from late autumn to the beginning of summer. Both the lichens and the tree litter showed significant between-year differences. Usnea longissima had an annual turnover of 7.0 and 10.0% of the standing crop at the two sites. The thallus length distribution of U. longissima was positively skewed. It is concluded that dispersal of thallus fragments by wind evidently plays an important role for many of the filamentous lichens studied. It is suggested that U. longissima disperses over a much shorter distance than Alectoria sarmentosa and Bryoria spp. within a forest stand.

scholarly journals Stem CO2 efflux and its contribution to ecosystem CO2 efflux decrease with drought in a Mediterranean forest stand

2014 ◽  
Vol 195-196 ◽  
pp. 61-72 ◽  
Author(s):  
Jesús Rodríguez-Calcerrada ◽  
Nicolas K. Martin-StPaul ◽  
Morine Lempereur ◽  
Jean-Marc Ourcival ◽  
María del Carmen del Rey ◽  
...  
Keyword(s):  
Forest Stand ◽  
Mediterranean Forest ◽  
Co2 Efflux ◽  
Stem Co2 Efflux

scholarly journals Using low density LiDAR data to map Mediterranean forest characteristics by means of an area-based approach and height threshold analysis

2016 ◽  
pp. 103 ◽  
Author(s):  
J. Guerra-Hernández ◽  
M. Tomé ◽  
E. González-Ferreiro
Keyword(s):  
Regression Models ◽  
Deciduous Forest ◽  
Coniferous Forest ◽  
Mixed Forest ◽  
Forest Stand ◽  
Airborne Lidar ◽  
Mediterranean Forest ◽  
Lidar Data ◽  
Low Density ◽  
Airborne Lidar Data

<p>This study reports progress in forest inventory methods involving the use of low density airborne LiDAR data and an area-based approach (ABA). It also emphasizes the usefulness of the Spanish countrywide LiDAR dataset for mapping forest stand attributes in Mediterranean stone pine forest characterized by complex orography. Lowdensity airborne LiDAR data (0.5 first returns m<sup><span lang="EN-US">–2</span></sup>) was used to develop individual regression models for a set of forest stand variables in different types of forest. LiDAR data is now freely available for most of the Spanish territory and is provided by the Spanish National Aerial Photography Program (Plan Nacional de Ortofotografía Aérea, PNOA). The influence of height thresholds (MHT: Minimun Height Threshold and BHT: Break Height Threshold) used in extracting LiDAR metrics was also investigated. The best regression models explained 61-85%, 67-98% and 74-98% of the variability in ground-truth stand height, basal area and volume, respectively. The magnitude of error for predicting structural vegetation parameters was higher in closed deciduous and mixed forest than in the more homogeneous coniferous stands. Analysis of height thresholds (HT) revealed that these parameters were not particularly important for estimating several forest attributes in the coniferous forest; nevertheless, substantial differences in volume modelling were observed when the height thresholds (MHT and BHT) were increased in complex structural vegetation (mixed and deciduous forest). A metric-by-metric analysis revealed that there were significant differences in most of the explanatory variables computed from different height thresholds (HBT and MHT).The best models were applied to the reference stands to yield spatially explicit predictions about the forest resources. Reliable mapping of biometric variables was implemented to facilitate effective and sustainable management strategies and practices in Mediterranean Forest ecosystems.</p>

scholarly journals Evapotranspiration measurements in a Mediterranean forest stand by means of ecophysiological and microclimatic techniques

1989 ◽  
Vol 46 (Supplement) ◽  
pp. 325s-329s ◽  
Author(s):  
R. Valentini ◽  
G. E. Scarascia-Mugnozza ◽  
M. Sabatti
Keyword(s):  
Forest Stand ◽  
Mediterranean Forest

scholarly journals Epiphytic lichens of the dark coniferous forest within the outbreak of Ips sexdentatus Boern. in the Maly Abakan site of the Khakassky Nature Reserve

2019 ◽  
Vol 16 ◽  
pp. 00019
Author(s):  
Evgenia Makeeva ◽  
Olga Zyryanova
Keyword(s):  
Bark Beetle ◽  
Nature Reserve ◽  
Coniferous Forest ◽  
Forest Stand ◽  
Epiphytic Lichens ◽  
Epiphytic Lichen ◽  
Dark Coniferous Forest ◽  
State Nature Reserve ◽  
Ips Sexdentatus ◽  
State Nature

The article demonstrates the results of studies epiphytic lichens species composition from the territory of the Khakassky State Nature Reserve, conducted in the alpine cedar taiga at the location of the Ips sexdentatus outbreak. There were two types of sample plots: damaged plots, characterized by shriveled cedars infected by bark beetle and flawless plots containing forest stand of primarily vigorous trees. All sample plots were found to comprise 46 species of lichens belonging to 24 genera and 13 families. It was observed that plots infected by bark beetle were inhabited by lichens with poor vital activities manifested by their damaged thalli. However, there were no evident changes in the epiphytic lichen communities on floristic and coenotic levels.

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