Lichens and ultramafic rocks: a review

2004 ◽  
Vol 36 (6) ◽  
pp. 391-404 ◽  
Author(s):  
Sergio E. FAVERO-LONGO ◽  
Deborah ISOCRONO ◽  
Rosanna PIERVITTORI
Keyword(s):  
Environmental Factors ◽  
20Th Century ◽  
Distribution Patterns ◽  
Disjunct Distribution ◽  
Ultramafic Rocks ◽  
Chemical Interactions ◽  
Ecological Features ◽  
Physico Chemical ◽  
Wide Range ◽  
Occurrence Of Species

Floristic, vegetational and ecological features of lichens in ultramafic environments are reviewed using a wide range of literature dating from the beginning of the 20th century. Co-presence of acidophytic (silicicolous) and basiphytic (calcicolous) species and the occurrence of species characterized by particular (disjunct) distribution patterns are features of lichens in ultramafic environments. It is not possible to detect consistent trends in data on other broadly accepted features, such as paucity of species, low cover and the occurrence of particular ecotypes because of the influence of several environmental factors in addition to the substratum. Some recent data about physico-chemical interactions between saxicolous lichens and ultramafic rocks are also reported.

ECOLOGICAL FEATURES OF HIBERNATING ANIMALS OF YAKUTIA

2021 ◽  
Vol 3 ◽  
pp. 16-27
Author(s):  
V.T. Sedalishchev ◽  
V.A. Odnokurtsev
Keyword(s):  
Gastrointestinal Tract ◽  
Environmental Factors ◽  
Ground Squirrel ◽  
Brown Bear ◽  
The Body ◽  
Ecological Features ◽  
Winter Conditions ◽  
Literary Sources ◽  
Wide Range ◽  
Physiological Adaptations

Under the influence of environmental factors, in winter-sleeping animals living in extreme winter conditions, a wide range of mechanisms of ecological and physiological adaptations is mani-fested that ensure the normal course of wintering and the survival of populations of species after its end. We carried out an analysis of our own data and literary sources on ecology and endoparasite infestation in three species of rodents – black-capped marmot, Asian long-tailed ground squirrel, Siberian (Asian) chipmunk, and in a representative of predators– brown bear. Data on the distribu-tion of the listed species of hibernating animals in the territory of Yakutia, their reproduction, nutri-tion, the extent of infestation by helminths, hibernation, time of bedding and awakening are given. Before going into hibernation, all hibernating animals reduce their diet and resort to hunger strikes. During this period, liquid and solid excrement is excreted from the body and, together with food waste, helminths leave or destrobilatethe gastrointestinal tract.

scholarly journals Research on the Physico-Chemical Properties of Soils Locality Dobrosloveni, Olt County for Sustainable Agriculture

2021 ◽  
Vol 9 (2) ◽  
pp. 8
Author(s):  
Anca-Luiza Stănilă
Keyword(s):  
Environmental Factors ◽  
Soil Cover ◽  
Chemical Properties ◽  
Hydrological Regime ◽  
Physico Chemical ◽  
Wide Range ◽  
Low Altitude ◽  
Chemical Properties Of Soils ◽  
Direct Reflection ◽  
Pedogenetic Processes

The studied territory located in the central-western part of Olt County, belongs to the Caracal Plain and extremely little in the Leu-Rotunda Field in the SW part, both as divisions of the Romanati Plain.Locality presents a predominant relief of plain low altitude that is characterized by alluvio-proluvial plains moderately fragmented with local terraces, covered with loess-like deposit but relief of saucer.The soil cover of the territory under study is the direct reflection of all environmental factors, each having a role in the pedogenetic processes. Climate, as a pedogenetic factor, acted by its components, namely: temperature, precipitation, evapotranspiration, global radiation.Forest steppe vegetation was the supply of organic matter and biomass, because the hydrological regime is deficient, but especially the lithological substrate (loess-like complex) to steer solification to types characteristic of the cernisols class.Under the influence of environmental factors and pedogenetic processes within the locality Dobrosloveni it formed a wide range of soils, namely: protisols, cernisols, luvisols and hydrisols.

scholarly journals Research on the Physico-Chemical Properties of Soils Locality Daneasa, Olt County for Sustainable Agriculture

2020 ◽  
Vol 8 (2) ◽  
pp. 1
Author(s):  
Anca-Luiza Stănilă
Keyword(s):  
Environmental Factors ◽  
Chemical Properties ◽  
Hydrological Regime ◽  
Left Bank ◽  
Climate Conditions ◽  
Physico Chemical ◽  
Wide Range ◽  
Chemical Properties Of Soils ◽  
Direct Reflection ◽  
Pedogenetic Processes

The territory studied is situated in the South-Eastern part of Olt County, it is part of the great unit of the Romanian Plain, that is, from the subunit of Boianu Plain (Calmatui Plain), being located on the left bank of Olt River. Locality presents a predominant relief of plain low altitude that is characterized by alluvio-proluvial plains moderately fragmented with local terraces, covered with loess-like deposit but relief of saucer.The soil cover of the territory under study is the direct reflection of all environmental factors, each having a role in the pedogenetic processes. Thus, the climate conditions have ensured the solification direction, taking into account the temperature regime and the specific precipitation of the Boianu Plain.Steppe vegetation was the supply of organic matter and biomass, because the hydrological regime is deficient, but especially the lithological substrate (loess) to steer solification to types characteristic of the cernisols class.Under the influence of environmental factors and pedogenetic processes within the locality Daneasa it formed a wide range of soils, namely: protisols, cernisols, luvisols, hydrisols and salsodisols.

scholarly journals Ecological features of some species of the Lily of the valley family (Convallariaceae) in the Kirov Region

2019 ◽  
Vol 8 (4) ◽  
pp. 89-93
Author(s):  
Venera Nuritdinovna Suleimanova ◽  
Tatyana Leonidovna Egoshina
Keyword(s):  
Environmental Factors ◽  
Plant Communities ◽  
Ecological Niches ◽  
Natural Habitats ◽  
Ecological Conditions ◽  
Ecological Features ◽  
Ecological Scales ◽  
Wide Range ◽  
Shade Tolerant Species ◽  
Convallaria Majalis

In connection with the anthropogenic load on the natural habitats of many medicinal plant species, it is relevant to assess the ecological conditions of growth in order to study the relationships between species and plant communities. The paper presents the analysis of ecological features of some species of the Lily of the valley family (Convallariaceae) in the Kirov Region. To identify the ecological-phytocoenotic association of the studied species in forest communities of the Kirov Region, 45 coenotic populations (CP) of Convallaria majalis , 10 CP of Polygonatum odoratum and 20 CP of Majanthemum bifolium were studied. When analyzing the ecological conditions of the species habitats, H. Ellenberg ecological scales were used. Geobotanical descriptions of plant communities were carried out according to generally accepted methods. It has been established that the amplitudes of the ecological spaces of the studied species in the Kirov Region practically do not fit into most ranges of ecological niches calculated on the basis of H. Ellenberg scales. The species have a wide range of adaptability to the studied environmental factors. All studied species are distributed on medium-moist soils (5th level of H. Ellenberg scale). The authors have shown that the studied species are similar in environmental factors such as moisture and soil richness with nitrogen. Convallaria majalis and Polygonatum odoratum - photophilous species, Majanthemum bifolium - shade-tolerant species are distinguished with respect to illumination. In the grass-shrub layer of the studied habitats of the species, 7 rare, small, narrowly araic species are listed in the Red Book of the Kirov Region ( Pulsatilia flavescens (Zuccar.) Juz., Potentilla humifusa Willd. ex Schlecht., Centaurea sumensis Kalen., Koeleria glauca (Spreng.) DC., Eryngium planum L., Geranium sanguineum L., Carex bohemica Schreb.). And 4 species that need constant monitoring and observation in the region (Annex 2) - Campanula perscifolia L., Pulsatilia patens (L.) Mill., Platanthera bifolia (L.) Rich., Iris sibirica L.).

On physico-chemical interactions between daunomycin and nucleic acids

1965 ◽  
Vol 103 (1) ◽  
pp. 25-49 ◽  
Author(s):  
E. Calendi ◽  
A. Di Marco ◽  
M. Reggiani ◽  
B. Scarpinato ◽  
L. Valentini
Keyword(s):  
Nucleic Acids ◽  
Chemical Interactions ◽  
Physico Chemical

scholarly journals Behavioral medicine challenges in the shadow of a global pandemic

2020 ◽  
Author(s):  
Alyssa T Brooks ◽  
Hannah K Allen ◽  
Louise Thornton ◽  
Tracy Trevorrow
Keyword(s):  
Environmental Factors ◽  
Health Behavior ◽  
Health Behaviors ◽  
Natural Experiment ◽  
Direct Effects ◽  
Global Pandemic ◽  
Wide Range ◽  
Future Data ◽  
Short And Long Term

Abstract Health behavior researchers should refocus and retool as it becomes increasingly clear that the challenges of the COVID-19 pandemic surpass the direct effects of COVID-19 and include unique, drastic, and ubiquitous consequences for health behavior. The circumstances of the pandemic have created a natural experiment, allowing researchers focusing on a wide range of health behaviors and populations with the opportunity to use previously collected and future data to study: (a) changes in health behavior prepandemic and postpandemic, (b) health behavior prevalence and needs amidst the pandemic, and (c) the effects of the pandemic on short- and long-term health behavior. Our field is particularly challenged as we attempt to consider biopsychosocial, political, and environmental factors that affect health and health behavior. These realities, while daunting, should call us to action to refocus and retool our research, prevention, and intervention efforts

Theory in closer contact with industrial life: American institutional economists on competition theory and policy

2021 ◽  
pp. 1-18
Author(s):  
Matthew T. Panhans ◽  
Reinhard Schumacher
Keyword(s):  
20Th Century ◽  
Competition Policy ◽  
Self Regulation ◽  
Consumer Welfare ◽  
Antitrust Enforcement ◽  
Mainstream Economic ◽  
Competition Theory ◽  
One Stage ◽  
Wide Range ◽  
Experimental Attitude

Abstract This paper investigates the views on competition theory and policy of the American institutional economists during the first half of the 20th century. These perspectives contrasted with those of contemporary neoclassical and later mainstream economic approaches. We identify three distinct dimensions to an institutionalist perspective on competition. First, institutionalist approaches focused on describing industry details, so as to bring theory into closer contact with reality. Second, institutionalists emphasized that while competition was sometimes beneficial, it could also be disruptive. Third, institutionalists had a broad view of the objectives of competition policy that extended beyond effects on consumer welfare. Consequently, institutionalists advocated for a wide range of policies to enhance competition, including industrial self-regulation, broad stakeholder representation within corporations, and direct governmental regulations. Their experimental attitude implied that policy would always be evolving, and antitrust enforcement might be only one stage in the development toward a regime of industrial regulation.

Cholinium-amino acid based ionic liquids: a new method of synthesis and physico-chemical characterization

2015 ◽  
Vol 17 (32) ◽  
pp. 20687-20698 ◽  
Author(s):  
Serena De Santis ◽  
Giancarlo Masci ◽  
Francesco Casciotta ◽  
Ruggero Caminiti ◽  
Eleonora Scarpellini ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Room Temperature ◽  
Chemical Characterization ◽  
New Method ◽  
Room Temperature Ionic Liquids ◽  
Synthetic Method ◽  
Chemical Structures ◽  
Physico Chemical ◽  
Wide Range

Fourteen cholinium-amino acid based room temperature ionic liquids were prepared using a cleaner synthetic method. Chemicophysical properties were well correlated with the wide range of amino acid chemical structures.

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