DETERMINATION OF LICHEN DIVERSITY VARIATIONS IN HABITAT TYPE OF MEDITERRANEAN MAQUIS AND ARBORESCENT MATORRAL

AbstractThe description of the tenChamaespheciaspecies associated withEuphorbiain eastern and south-eastern Europe is based on external adult morphology, male and female genitalia, and the structure of the egg chorion. These species can be divided into two groups according to the shape of the setae of the dorso-basal part of the valvae in the male genitalia. MostChamaespheciaspecies are associated with one species of host-plant and all are closely tied to one habitat type. The host-plant and the structure of the egg chorion are fundamental characteristics for the determination of a few species, and very helpful for the others. All species bore into the main root of their host-plant and overwinter as larvae. With the exception of two species which have an annual or biennial life cycle, all species are univoltine. The larvae of three of the eightChamaespheciaspp. investigated feed and develop in the roots of North American leafy spurge,Euphorbia esulasensu lato. Of these, the best candidate for the biological control of leafy spurge isC. crassicornis, because the larvae have a similar survival rate on the target weed and the European host-plant,E. virgata.

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Exploiting hot-spots; effective determination of lichen diversity in a Carpathian virgin forest

PLoS ONE ◽

10.1371/journal.pone.0203540 ◽

2018 ◽

Vol 13 (9) ◽

pp. e0203540 ◽

Cited By ~ 8

Author(s):

Jan Vondrák ◽

Jiří Malíček ◽

Zdeněk Palice ◽

František Bouda ◽

Franz Berger ◽

...

Keyword(s):

Hot Spots ◽

Virgin Forest ◽

Lichen Diversity

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Determination of the Visual Preferences of Different Habitat Types

10.20944/preprints201807.0243.v1 ◽

2018 ◽

Author(s):

Engin Eroğlu ◽

Sertaç Kaya ◽

Tuba Gul Dogan ◽

Alperen Meral ◽

Sena Demirci ◽

...

Keyword(s):

Conservation Status ◽

Habitat Type ◽

Visual Quality ◽

Point Of View ◽

Quality Analysis ◽

Habitat Types ◽

Landscape Characteristics ◽

Visual Preferences ◽

Visual Attraction

The unique qualities of areas with natural landscape features help provide sustainability. Moreover, their different vegetation covers and ecosystems contribute to the preservation of their visual attraction. In recent years, the demand for natural areas has not only been seen at a recreational level, but has also become associated with the conservation and sustainability of those areas. Although the concept of sustainability is expressed from an ecological point of view, studies indicate that the visual aspect is also an important component. Thus, in this study, a visual quality assessment was carried out which considered both objective and subjective evaluations of different habitat types. Efteni lake-wetland and Melen Ağzı dunes (Düzce), Anzer, Ayder, and Çat Düzü highlands (Rize), and Sultanmurat and Taşli highlands (Trabzon) were selected as the study areas. A visual quality analysis was conducted with a total of 43 participants (23 students, 16 local inhabitants and four lecturers) in order establish their preferences in areas with different landscape characteristics. For the determination of the visual qualifications of these areas, a total of 24 photographs showing typical images representing each habitat type (three photographs for each) were employed. Taking perceptual parameters into consideration, assessment of visual quality was made according to the points given to each photo by the participants. Consequently, differences in visual quality were found to be influenced by the demographic status of the participants, differences in habitat types, recreational trends and the conservation status of the habitats.

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Nutritional relationships between hemi-parasitic mistletoe and some of its deciduous hosts in different habitats

Biologia ◽

10.2478/s11756-010-0088-5 ◽

2010 ◽

Vol 65 (5) ◽

Cited By ~ 8

Author(s):

Cengiz Türe ◽

Harun Böcük ◽

Zerrin Aşan

Keyword(s):

Host Plants ◽

Community Dynamics ◽

Plant Root ◽

Habitat Type ◽

Viscum Album ◽

Mineral Nutrient ◽

Habitat Types ◽

Nutrient Partitioning ◽

Host Parasite

AbstractParasitism of plants by other plants provides an exceptional opportunity for investigating correlative nutritional relationships. Because of lacking a usual plant-root sytem capable of active uptake, the best correlation for predicting the concentrations of elements in parasitic plants is often those in the host plants. This study, therefore, mainly focuses on determination of i) mineral nutrient partitioning between hemi-parasitic white berry mistletoe (Viscum album L. subsp. album) and four of its deciduous hosts growing in different habitats namely wetland and semi-arid and ii) effects of these habitat types on nutrient absorption. During the research, leaf samples of both hemi-parasites and their host plants were chemically analysed, mistletoes on each host plants were counted and the results were considered statistically. Concentrations of some elements (N, P, K, Na, S, Cu, Zn) were higher in mistletoe whereas some others (Ca, Mg, Fe, Mn and B) were higher in the hosts (p< 0.05). Habitat type was also determined to be effective in host-parasite systems. Revealing information about nutritional interactions between multi-host hemi-parasites and their host plants is a useful tool to understand their functions in ecosystems, population-community dynamics and their co-evolution process.

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Relationship between lichen diversity and air quality in urban region in Bourdj Bou Arriridj, Algeria

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d200831 ◽

2019 ◽

Vol 20 (8) ◽

Author(s):

Messaoud Ramdani ◽

Fatima Adjiri ◽

Takia Lograda

Keyword(s):

Air Pollution ◽

Air Quality ◽

Road Traffic ◽

Shannon Index ◽

Urban Region ◽

Epiphytic Lichens ◽

Lichen Diversity ◽

Bio Monitoring ◽

Eastern Algeria

Abstract. Fatima A, Messaoud R, Takia L. 2019. Relationship between lichen diversity and air quality in urban region in Bourdj Bou Arriridj, Algeria. Biodiversitas 20: 2329-2339. The lichenic biodiversity can be an excellent instrument for measuring air quality biomonitoring in urban and industrial areas. Two bio-monitoring techniques were used to assess and map the levels of air quality in Bordj Bou Arreridj region (BBA), an urban area located in Eastern Algeria, and to identify species sensitive to air pollution. The first one was based on the diversity and abundance of epiphytic lichens, while the other technique was using two bio-indication indices. Epiphytic lichens were sampled from thirty-four stations chosen on the basis of the presence of suitable phorophytes on which it is possible to observe lichens. The assessment of lichen biodiversity was based on the calculation of lichenic abundance indices (LA) and the Shannon index (H'). For the determination of the different levels of air pollution, the indices of atmospheric purity (IAP) and lichen diversity (LDV) were used. There were 62 identified species belong to 19 families and 31 genera of lichens, among which crustacean and foliose thalli were the most common in the region. Lichen biodiversity decreased as the sampled location approaching industrial sources and road traffic. The IAP ranged from 16.19-79.82 and LDV values ranged from 12.50-52.16. The results showed a significant relationship between lichen diversity and air quality, and indicated low atmospheric pollution in the BBA region. This study allowed us to draw up a list of sensitive species and tolerant species to air pollution.

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Factor analysis of the urban habitats classification on the example of the Sverdlovsk district of Irkutsk city

10.35688/2413-8452-2019-03-002 ◽

2019 ◽

Vol 3 ◽

pp. 12-19

Author(s):

Martynova A.E. ◽

Solodyankina S.V.

Keyword(s):

Habitat Type ◽

Principal Component ◽

Hierarchical Level ◽

Urban Greening ◽

Principal Component Method ◽

Habitat Classification ◽

Object Of Study ◽

Main Component ◽

The City

The habitats typification was made using the European Habitat Classification System EUNIS (European Nature Information System) for the Sverdlovsk District of the city of Irkutsk. The object of study is divided into 676 plots with QGIS software. Geobotanical descriptions were carried out for some of them. Six parameters were determined which influence to the configuration and the functioning of habitats: 1) the presence of urban greening (the ratio of the area with vegetation cover to the total area of the plot); 2) paving (the ratio of the area of artificial surfaces to the total area of the plot); 3) soil outcrops (the ratio of the area of barrens to the total area of the plot); 4) the presence of surface water (the ratio of the area of water bodies to the total area of the plot); 5) location heights and 6) slope steepness obtained for each section according to SRTM data. Analysis of the data by the principal component method showed that the greatest influence on the determination of the EUNIS habitat type of the first hierarchical level is exerted by the parameters of greenery, paving (the first main component) and slope (the second component). Evaluation of the results of classification by the method of the discriminant analysis showed that it is 51.5% attributable to these variables, and the rest is described by other factors.

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Diversity of lichens, mosses and vascular plants in the paludified herb-rich spruce forests of the Pinego-Mezen watershed (Arkhangelsk Region)

Проблемы ботаники Южной Сибири и Монголии ◽

10.14258/pbssm.2021049 ◽

2021 ◽

Vol 20 (1) ◽

pp. 255-260

Author(s):

S. A. Kutenkov ◽

V. N. Tarasova

Keyword(s):

Stand Structure ◽

Vascular Plant ◽

Habitat Type ◽

Basal Area ◽

Compositional Gradient ◽

Spruce Forests ◽

Lichen Diversity ◽

Tree Stand Structure ◽

Lichen Flora

The paludified herb-rich spruce forests of the Pinego-Mezen watershed are characterized by a high speciesand coenotical diversity. The habitat type (floodplain, stream valley, mire margin) is the main compositional gradientfor vascular plant and moss diversity. The density, basal area and proportion of spruce and deciduous species in thetree stand are less significant. The main compositional gradient of the lichen diversity is the tree stand structure, whichprovides the availability and quality of the substrate for the epiphytic and epixilic lichens that prevail in such communities.The gradient of paludified herb-rich spruce forests from floodplain habitat to mire margins is less significant for thecomposition of lichen flora.

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The determination of the changes in epiphytic lichen diversity at microclimatic conditions the Quercus petraea (Mattuschka) Liebl. forest in the Uludağ Mountains (Bursa, Turkey)

Nova Hedwigia ◽

10.1127/nova_hedwigia/2019/0556 ◽

2019 ◽

Vol 109 (3) ◽

pp. 475-487

Author(s):

Şule Öztürk ◽

Şaban Güvenç ◽

Seyhan Oran

Keyword(s):

Relative Humidity ◽

Common Species ◽

Quercus Petraea ◽

Tree Size ◽

Tree Bark ◽

Epiphytic Lichen ◽

Surface Moisture ◽

Lichen Diversity ◽

Microclimatic Conditions

The aim of this study is to determine the effects of microclimatic factors and tree size on epiphytic lichen diversity in different parts of Quercus petraea. The microclimatic factors used were tree size, the base and trunk of the tree, bark surface moisture, and environmental factors such as the amount of relative humidity and light in the environment. A total of 35 epiphytic lichen species was found in the Quercus petraea forest in the Uludağ Mountains. Parmelia sulcata was the most common species. The highest species diversity was found in small trees. Shannon diversity on the trunk of the tree decreased with the increase in the tree size. The relationship between tree size and species richness on the trunk of the tree was found to be more significant than that found on the base. It has been determined that the frequency of some species on the base and trunk of the tree was increased as a result of an increase in the amount of relative humidity and light in the environment and an increase in the bark surface moisture. At the same time the frequency decreased when the amount of relative humidity and light in the environment and bark surface moisture decreased.

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Galactic orbits of stars

Symposium - International Astronomical Union ◽

10.1017/s0074180900105340 ◽

1966 ◽

Vol 25 ◽

pp. 93-97

Author(s):

Richard Woolley

Keyword(s):

Globular Cluster ◽

Potential Field ◽

High Velocity ◽

Velocity Vector ◽

Variable Stars ◽

The Sun ◽

Proper Motions ◽

Rr Lyrae ◽

The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

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Distance to SN 1987A and the LMC

Symposium - International Astronomical Union ◽

10.1017/s0074180900118959 ◽

1999 ◽

Vol 190 ◽

pp. 549-554

Author(s):

Nino Panagia

Keyword(s):

Angular Size ◽

Large Magellanic Cloud ◽

Magellanic Cloud ◽

Light Curves ◽

Distance Modulus ◽

Absolute Size ◽

Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

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