scholarly journals Diversity and distribution of epiphytic lichens on Cedrus atlantica and Quercus faginea in Mount Babor Forest, Algeria

2021 ◽  
Vol 22 (2) ◽  
Author(s):  
Amina Belguidoum ◽  
Takia Lograda ◽  
Messaoud Ramdani
Keyword(s):  
Large Diameter ◽  
Similarity Index ◽  
Biological Indicators ◽  
Common Species ◽  
Epiphytic Lichens ◽  
Quercus Faginea ◽  
Cedrus Atlantica ◽  
Lichen Diversity ◽  
Host Trees ◽  
Sørensen Index

Abstract. Belguidoum A, Lograda T, Ramdani M. 2021. Diversity and distribution of epiphytic lichens on Cedrus atlantica and Quercus faginea in Mount Babor Forest, Algeria. Biodiversitas 22: 887-899. Information about lichen diversity in Algeria is limited despite their important role as biological indicators of ecosystem health. The aim of the study was to carry out an inventory of epiphytic lichens in the Mount Babor Forest on two types of phorophytes (host trees), i.e., Cedrus atlantica and Quercus faginea, in varying altitudinal gradients and the diameter of host tree. The similarity of the sampled sites was assessed by the Sorensen index (β). Sixty-six species of epiphytic lichens were identified, which belong to 24 families and 38 genera. C. atlantica hosted a higher number of species than Q. faginea. The majority of lichen on C. atlantica belonged to the Parmeliaceae family, whereas those on Q. faginea belonged to the Physciaceae family. Crustose and foliose lichens were the most common species in the study area. The results showed the existence of a distinct relationship between the parameters of the distribution (i.e., tree diameter, elevation) and the specific lichen richness. The greatest number of lichen species (59 species) was observed on large diameter trunks (41-60 cm). Lichen diversity increased along with the increase in altitude. Sorensen’s similarity index revealed the presence of heterogeneity in the community composition of lichen vegetation.

Lichens on Picea abies and Pinus sylvestris – from tree bottom to the top

2013 ◽  
Vol 45 (1) ◽  
pp. 51-63 ◽  
Author(s):  
Liis MARMOR ◽  
Tiiu TÕRRA ◽  
Lauri SAAG ◽  
Ede LEPPIK ◽  
Tiina RANDLANE
Keyword(s):  
Vertical Gradient ◽  
Common Species ◽  
Lichen Species ◽  
Coniferous Forests ◽  
Epiphytic Lichens ◽  
Forest Canopies ◽  
Number Of Species ◽  
Lichen Diversity ◽  
The Mean ◽  
One New Species

AbstractThe vertical gradient of the community structure of epiphytic lichens in forest canopies was studied in southern Estonian coniferous forests. All lichen species on 15 Norway spruces and 15 Scots pines were recorded; age of trees ≥100 years. Species were sampled in height ranges on entire trees from the bottom to the top. The number of lichen species on pine trunks decreased with height from the ground, whereas the number of species on branches increased. There was no significant vertical change in the number of lichen species on spruce trunks; number of species on spruce branches was highest in mid canopy. The mean number of lichen species on a tree was 41 in spruces and 34 in pines; the mean number of species on the first 2 m was 14 in spruces and 12 in pines. According to the results, about two thirds of a tree's lichen species remain unrecorded if only the first 2 m near the ground are surveyed. Many lichen species were found only higher than 2 m, including several common species (e.g. Buellia griseovirens, Lecanora pulicaris, and Melanohalea exasperatula), but also some locally rather rare (Fellhanera subtilis, Micarea nitschkeana, Rinodina efflorescens) or red-listed ones (Evernia mesomorpha, Usnea barbata, U. fulvoreagens, U. substerilis, U. wasmuthii) and one new species for Estonia, Lecanora farinaria. There were also some species, such as Chaenotheca stemonea, Cladonia cenotea and C. norvegica, that were restricted to the lowest 2 m. The results indicate that canopy lichens form a significant part of lichen diversity in coniferous forests, and could add valuable information when estimating forest lichen diversity for conservation and other purposes.

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.

scholarly journals Epiphytic lichens as indicator of land-use pattern and forest harvesting in a community forest in west Nepal

2012 ◽  
Vol 8 ◽  
pp. 24-32 ◽  
Author(s):  
Pramod Nag ◽  
Himanshu Rai ◽  
Dalip Kumar Upreti ◽  
Sanjeeva Nayaka ◽  
Rajan Kumar Gupta
Keyword(s):  
Land Use ◽  
Forest Harvesting ◽  
Conservation Strategy ◽  
Stand Age ◽  
Epiphytic Lichens ◽  
Community Forest ◽  
Land Use Pattern ◽  
Community Based ◽  
Lichen Diversity ◽  
Use Pattern

Human inhabitance and agriculture have fundamentally altered global pattern of biodiversity and ecosystem processes. Therefore, integration of community-based approach is an effective conservation strategy. Community forestry is an important community-based approach, which can help in conserving local ecological assets in a sustainable manner. Lichens are known to be more sensitive indicators of ecosystem functions and disturbances than any other cryptogam and vascular plant community. Present study reports a preliminary assessment of epiphytic lichens in a community forest in Dadeldhura district, west Nepal, in order to identify potential indicator of forest health and land-use pattern. Epiphytic (corticolous) lichens were sampled from ten land-use units (LUU), using narrow frequency grids of 10 cm × 50 cm, each divided into five sampling units of 10 cm × 10 cm, on the bark of selected tree species. Quercus leucotrichophora was the dominant phorophyte followed by Pinus roxburghii, Rhododendron arboreum and Myrica esculenta. Foliose parmeloid (Parmotrema spp., Heterodermia spp., Hypotrachyna spp., Bulbothrix spp., Canoparmelia spp., Canomaculina spp.) was the most abundant lichen group, found inhabiting all the phorophytes followed by crustose, fruticose and dimorphic growth forms. Maximum diversity of parmeloid lichens was recorded on older stand of Quercus while younger stands usually harbored crustose lichens (e.g., Lecanora spp., Basidia spp.). Though the lichen diversity increased from outer fringes of the forest to the core, the vegetation stand age was not distributed in any consistent pattern suggesting unconstrained harvesting of the forest. Lichen diversity was found constrained by phorophyte determinants (stand age, aspect, and bark properties) and community harvesting of the forest.doi: http://dx.doi.org/10.3126/botor.v8i0.5555 Botanica Orientalis – Journal of Plant Science (2011) 8: 24-32

Identifying chironomids (Diptera: Chironomidae) for biological monitoring with PCR–RFLP

2003 ◽  
Vol 93 (6) ◽  
pp. 483-490 ◽  
Author(s):  
M.E. Carew ◽  
V. Pettigrove ◽  
A.A. Hoffmann
Keyword(s):  
Molecular Markers ◽  
Large Scale ◽  
Life Stage ◽  
Biological Indicators ◽  
Geographic Area ◽  
Common Species ◽  
Rapid Identification ◽  
Chironomid Species ◽  
Pcr Rflp ◽  
Identification Of Species

AbstractChironomids are excellent biological indicators for the health of aquatic ecosystems, but their use at finer taxonomic levels is hindered by morphological similarity of species at each life stage. Molecular markers have the potential to overcome these problems by facilitating species identification particularly in large-scale surveys. In this study, the potential of the polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP) approach was tested to rapidly distinguish among chironomids within a geographic area, by considering chironomid species from Melbourne, Australia. By comparing molecular markers with diagnostic morphological traits, RFLP profiles of the cytochrome oxidase I (COI) region were identified that were specific to genera and some common species. These profiles were used to develop an RFLP–based key, which was validated by testing the markers on samples from several wetlands and streams. As well as allowing for rapid identification of species that are difficult to separate on morphological grounds, this approach also has the potential to resolve current taxonomic ambiguities.

scholarly journals Assessment of environmental quality by the diversity of epiphytic lichens in a semi-arid mediterranean area (Val Basento, South Italy)

Biologia ◽  
2006 ◽  
Vol 61 (4) ◽  
Author(s):  
Luca Paoli ◽  
Anna Guttová ◽  
Stefano Loppi
Keyword(s):  
Environmental Quality ◽  
Mediterranean Area ◽  
Arid Area ◽  
Epiphytic Lichens ◽  
Industrial Zone ◽  
Environmental Alteration ◽  
South Italy ◽  
Lichen Diversity ◽  
Rural Context ◽  
Semi Arid

AbstractThe results of a bioindication study based on the diversity of epiphytic lichens in a semi-arid area of South Italy are presented. The area features the presence of an industrial zone located in a rural context. The survey was performed in 20 sampling sites. The lichen diversity values (LDV) were determined by the frequencies of all lichen species within a sampling grid placed on tree trunks. Lichens demonstrated a condition of environmental alteration extending to the industrial zone, and tending towards a recovery in the rural surroundings. The survey also showed evidence of eutrophication all over the study area.

scholarly journals Farfalle diurne e incendi: indagine in foreste lombarde (Lepidoptera Hesperioidea, Papilionoidea)

2012 ◽  
pp. 79-86
Author(s):  
Giampio D’Amico
Keyword(s):  
Ad Hoc ◽  
State Of The Art ◽  
Habitat Preferences ◽  
Sono State ◽  
Common Species ◽  
Ecological Value ◽  
Management Actions ◽  
The Subject ◽  
Sørensen Index ◽  
New Habitats

Riassunto - La risposta dei lepidotteri diurni agli effetti del fuoco è estremamente variabile. Per approfondire le attuali conoscenze sull’argomento in italia sono state indagate 5 aree boscate lombarde collinari o montane percorse dal fuoco. La ricchezza in specie di farfalle diurne e la loro abbondanza relativa sono state registrate nel corso di campionamenti condotti mensilmente tra giugno e agosto 2000 lungo due transetti campione limitrofi in ogni area oggetto di studio: uno danneggiato dal fuoco e l’altro (di controllo) mai o poco interessato dall’incendio. Per ogni specie rilevata sono state prese in considerazione le preferenze di habitat. Dalla ricerca è emerso sostanzialmente che in aree boscate di non elevato pregio naturalistico, come quelle indagate, l’azione del fuoco può costituire un pericolo reale per specie nemorali e non comuni (es. Lasiommata achine, Limenitis populi), mentre può originare ambienti nuovi per specie non esclusivamente forestali o comunque svantaggiate dall’infittirsi dei boschi (Leptidea sinapis, Melitaea athalia), finendo quindi per costituire in alcuni casi un elemento di arricchimento delle popolazioni di farfalle diurne locali, anche se limitato per lo più a specie di ambienti transitori di interesse conservazionistico non particolarmente elevato. L’utilizzo dell’indice di Sørensen per valutare la somiglianza specifica tra ambiente incendiato e di controllo non ha fornito risultati significativi. interventi di gestione post-incendio in aree forestali come quelle oggetto di studio, oltre a tener presente considerazioni di ordine generale sulle cause di minaccia dei lepidotteri diurni in italia, si dovrebbero basare sui risultati di ulteriori indagini di cui vengono indicate le modalità eventualmente da adottare a partire dal quadro conoscitivo iniziale fornito dalla presente ricerca.Abstract - Butterflies and fires: a survey in forests of Lombardy (Lepidoptera Hesperioidea, Papilionoidea). The response of butterflies to the effects of fire is extremely variable. in order to improve the state-of-the-art knowledge on the subject in Italy, five wooded areas interested by fire in the region of Lombardy (Northern italy) have been investigated. Butterfly richness and relative abundance have been recorded through monthly surveys carried out between June and August 2000. For each area, two neighboring transects have been analyzed, respectively damaged and not damaged by fire. The latter was used as a reference for comparison. The habitat preferences have been analyzed for each sampled species. Results show that the action of fire can work as a real danger for nemoral and non common species (e.g., Lasiommata achine, Limenitis populi) in wooded areas of poor ecological value. on the other hand, fire can create new habitats for species which are not exclusively nemoral or - more generally- for butterflies which need open habitats and cannot colonyze forests (e.g., Leptidea sinapis, Melitaea athalia). The Sørensen index has also been used to evaluate the specific similarities between the investigated areas, but it has not given significant results. The findings of this research can be used to plan ad-hoc post-fire management actions in forestal areas as a complement to the general considerations on the causes of threat of diurnal Lepidoptera in italy.

Response of Evernia prunastri to urban environmental conditions in Central Europe after the decrease of air pollution

2013 ◽  
Vol 45 (1) ◽  
pp. 89-100 ◽  
Author(s):  
Anna LACKOVIČOVÁ ◽  
Anna GUTTOVÁ ◽  
Martin BAČKOR ◽  
Peter PIŠÚT ◽  
Ivan PIŠÚT
Keyword(s):  
Air Pollution ◽  
Central Europe ◽  
Photosynthetic Pigments ◽  
Urban Environments ◽  
Physiological Status ◽  
Epiphytic Lichens ◽  
Evernia Prunastri ◽  
Epiphytic Lichen ◽  
Lichen Diversity ◽  
Positive Correlations

AbstractThe epiphytic lichen Evernia prunastri is sensitive to air pollution and reacted by total retreat to the worsening of air quality during the peak of SO2 pollution in Central Europe (1950s–1990). Since 1990, after a significant decrease in air pollution, epiphytic lichens recolonized previously polluted areas, including E. prunastri. We investigated the physiological status of E. prunastri, transplanted for six months in 34 sites in the urban area of Bratislava (Slovakia) under current conditions. The content of chlorophylls, cortical and medullar secondary metabolites and soluble proteins were explored. We then examined the relationship of these parameters with the environmental quality status, reflected by the diversity of epiphytic lichens. The results showed that the physiological status of E. prunastri did not change significantly after exposure. Positive correlations were found between lichen diversity in the sampling sites and physiological parameters (photosynthetic pigments and phaeophytinization quotient) in the transplants. Transplants from sampling sites with a greater proportion of nitrophilous lichens displayed a decrease in photosynthetic pigments. Sites where E. prunastri naturally occurred had a lower proportion of nitrophilous species in comparison to sites where E. prunastri was not present. This suggests that the indicator species E. prunastri may also recolonize sites with low eutrophication in urban environments under decreased air pollution, and the information on its presence can help to assess the pressure caused by nitrogen excess.

scholarly journals Ecology-faunistic analysis of blackflies (DIPTERA, SIMULIIDAE) of hydrobiocenesis on the north-eastern macroslope of the Ukrainian Carpathians

2019 ◽  
Vol 77 (1) ◽  
pp. 32-38
Author(s):  
A. Tepliuk ◽  
T. Tepliuk
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Similarity Index ◽  
Common Species ◽  
Beech Forests ◽  
Species Diversity Index ◽  
Quantitative Correlation ◽  
The North ◽  
Plant Groups ◽  
North Eastern

It has been installed that the species richness of the blackflies of the north-eastern macroslope of the Ukrainian Carpathians counts 38 species of 2 genera: Prosimulium Roubaud, 1906 (2 species) and Simulium Latreille, 1802 (36 species). 20 species develop in the streams (Simpson's species diversity index (Іs) equals to 0,22), and 26 species develop in the rivers (Іs – 0,10). There are 8 common species of Simuliidae for both types of watercourses (similarity index by Czekanowski/Sørensen (І) is 0,26). 12 species of blackflies develop only in the streams, and 18 species develop only in the rivers. S. trifasciatum Curtis, 1839, S. reptanoides Carlsson, 1962, S. ornatum Meigen, 1818 and S. intermedium Roubaud, 1906 dominate in the hydrobiocenoses of the north-eastern macroslope of the Ukrainian Carpathians. S. trifasciatum and S. ornatum are widespread. It has been discovered that Simuliidae fauna of main altitudinal zonal plant groups of the region differs in composition and quantitative correlation of species. S. intermedium, S. ornatum, S. reptans Linnaeus, 1758 and S. trifasciatum are eurytopic. In the hydrobiocenoses of the district of beech forests has been registered 31 species (Is – 0.09), and in the watercourses of the district of spruce mountain Carpathian forests has been registered 24 species (Is – 0.18). It has been found out that with the decrease of height in the district of the beech forests, the value of Simpson's species diversity index decreases from 0.16 (20 species) in the subdistrict of the dark-coniferous-beech watershed forests to 0.11 (21 species) in the subdistrict of fir-beech and beech-fir precarpathian forests.

Variability of lichen diversity in a climatically heterogeneous area (Liguria, NW Italy)

2003 ◽  
Vol 35 (1) ◽  
pp. 55-69 ◽  
Author(s):  
Giorgio Brunialti ◽  
Paolo Giordani
Keyword(s):  
High Frequency ◽  
Environmental Variables ◽  
Epiphytic Lichens ◽  
Mountain Ridge ◽  
Oak Wood ◽  
Po Valley ◽  
Lichen Diversity ◽  
Mediterranean Regions ◽  
Nw Italy ◽  
Coastal Mountain

AbstractThe influence of environmental variables on epiphytic lichens in Liguria (NW Italy) was examined using two complementary approaches. Firstly, the variability of lichen vegetation in relation to environmental variables was investigated. Secondly, the variability of Lichen Biodiversity (LB) counts, used in biomonitoring studies, was analysed in relation to bioclimatic areas. Geomorphology strongly affects lichen vegetation. The coastal mountain ridge and the Tyrrhenian-Po valley watershed limit the distribution range of three different communities: a Parmelion community with a high frequency of coastal suboceanic species, a Parmelion community rich in oak wood species and the Pannelietum acetabuli association, situated beyond the Po Valley watershed. Substantial differences in the distribution of lichen communities related to a climatic gradient (from humid Mediterranean to dry sub-Mediterranean regions) are not matched by corresponding statistically significant differences in LB counts. More accurate studies are necessary to define homogeneous bioclimatic areas, in which LB values can be compared for biomonitoring purposes.

La structure forestière du mont Babor

1984 ◽  
Vol 50 ◽  
Author(s):  
K. De Smet ◽  
F. Bouanza
Keyword(s):  
Forest Structure ◽  
Forest Dynamics ◽  
Forest Types ◽  
Vertical Projection ◽  
Quercus Faginea ◽  
Cedrus Atlantica ◽  
Main Species ◽  
Fundamental Research ◽  
Near Future ◽  
North Algeria

The  Babor forest is situated in the central part of north Algeria. It is  dominated by two conifers, namely Cedrus atlantica and the endemic fir Abies numidica, as well as one decidious oak  Quercus faginea. The percentage of conifers  increases on higher altitude while around the top (~ 2000 m) the oak totally  disappears. Between 1650 and 1950 m a mixture of the above-mentioned species  occurs; although they may grow in equal proportions, oak and fir are more  widespread. The distribution of the different forest types is shown on a map  and the applied classification is compared with two other types of  classifications, mentioned in the literature.           The forest structure of the oak-fir-cedar type has been illustrated by two  drawings, each with the horizontal and vertical projection of a transect. The  behaviour of each of the six main species has been analysed in terms of their  role in forest dynamics. Some propositions were made for the procedure of the  fundamental research to be done in the near future.

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