scholarly journals Bryophytes of the Larsemann Hills (Princess Elizabeth Land, Antarctica)

2015 ◽  
Vol 49 ◽  
pp. 360-368 ◽  
Author(s):  
L. E. Kurbatova ◽  
M. P. Andreev
Keyword(s):  
Field Studies ◽  
Moss Species ◽  
Larsemann Hills ◽  
Bryum Pseudotriquetrum ◽  
Associated Species ◽  
First Time

The bryoflora of Larsemann Hills oasis (Princess Elizabeth Land, Antarctica) was investigated. Six moss species and one liverwort, Cephaloziella varians, were recorded during field studies over the period 2009–2014. Bryum archangelicum Bruch et Schimp. is new for Princess Elizabeth Land and three species [B. archangelicum, Bryoerythrophyllum antarcticum (L. I. Saviz et Smirnova) P. Sollman and Syntrichia sarconeurum Ochyra et R. H. Zander] are new for Larsemann Hills. Representative specimens are listed and data on habitats and associated species provided. The most common mosses in the area are Bryum pseudotriquetrum and Coscinodon lawianus. Bryum pseudotriquetrum was found for the first time in Larsemann Hills at the bottom of lakes.

Bryophytes of the oasis Molodyoznyi (Enderby Land, Antarctica)

2014 ◽  
Vol 48 ◽  
pp. 365-373
Author(s):  
L. E. Kurbatova ◽  
M. P. Andreev ◽  
A. V. Dolgikh
Keyword(s):  
Field Studies ◽  
Ceratodon Purpureus ◽  
Moss Species ◽  
Botanical Institute ◽  
Komarov Botanical Institute ◽  
Bryum Argenteum ◽  
Bryum Pseudotriquetrum ◽  
Associated Species ◽  
First Time

For the first time the bryoflora of oasis Molodyoznyi (Enderby Land, Antarctica) was investigated in details. Detailed field studies in 2010–2013, generalization of literature data and study of collections from Bryological Herbarium of Komarov Botanical Institute (LE) resulted in records of eight moss species. Four species (Bryum archangelicum Bruch et Schimp., B. argenteum Bruch et Schimp., Coscinodon lawianus (J. H. Willis) Ochyra и Schistidium antarctici (Card.) L. I. Savicz et Smirnova) are new for oasis Molodyoznyi. Coscinodon lawianus and Schistidium antarctici are new for Enderby Land. Representative specimens and data on habitats and associated species are provided. The moss vegetation of oasis Molodyoznyi is very poor and typical for continental coastal oases of Antarctica. The most common mosses are Ceratodon purpureus and Bryum pseudotriquetrum. Bryum argenteum, Coscinodon lawianus and Schistidium antarctici are rare in oasis Molodyoznyi and Hennediella heimii (Hedw.) R. H. Zander and Orthogrimmia sessitana (De Not.) Ochyra et Żarnowiec are known for oasis Molodyoznyi from the literature only.

The Sayan borderlands: Tuva’s ethnocultural landscapes in changing natural and sociocultural environments

2020 ◽  
Vol 13 (1) ◽  
pp. 29-36
Author(s):  
D. A. Dirin ◽  
Paul Fryer
Keyword(s):  
Cultural Landscapes ◽  
Field Studies ◽  
Social Environments ◽  
Key Factors ◽  
Role Of Government ◽  
Literary Sources ◽  
Population Migrations ◽  
The Republic ◽  
Sociocultural Processes ◽  
First Time

The paper is devoted to ethno-cultural landscapes of the Republic of Tuva. Ethnocultural landscapes (ECLs) are specific socio-environmental systems that developed as a result of the interaction of ethnic groups with their natural and social environments and are in a constant process of transformation. An attempt is made to identify the mechanisms of the formation, functioning and dynamics of ethnocultural landscapes in the specific conditions of the intracontinental cross-border mountain region, as well as to establish the main factors-catalysts of their modern changes. For the first time an attempt is made to delimit and map the ethnocultural landscapes of Tuva. For this, literary sources, statistical data and thematic maps of different times are analyzed using geoinformation methods. The results of 2014-2018 field studies are also used, during which interviews with representatives of different ethno-territorial, gender, age and social groups were taken. It is revealed that the key factors of Tuva’s ethnocultural landscape genesis are the natural isolation of its territory; the features of its landscape structure; the role of government; population migrations from other regions and the cultural diffusion provoked by them. 13 ethnocultural landscapes are identified at the regional level. Their modern transformation is determined by the shift of climatic cycles, aridisation, globalisation of sociocultural processes, changes in economic specialisation and ethnopsychological stereotypes.

scholarly journals Morphological, Anatomical and Cytological Studies of some Moss Species from Nigeria

2017 ◽  
Vol 9 (3) ◽  
pp. 404-413
Author(s):  
Abolade Oluremi BOLAJI ◽  
Julius Olaoye FALUYI
Keyword(s):  
Chromosome Numbers ◽  
Taxonomic Status ◽  
Knowledge Gaps ◽  
Moss Species ◽  
Anatomical Studies ◽  
First Time

Morphological, anatomical and chromosome studies of Hyophila crenulata C, Mull. Ex Dus, Thuidium gratum (P. Beauv) Jaeg., Barbula lambarenensis P. Vard.. Stereophyllum nitense Mitt. and Bryum coronatum Schwaegr from Nigeria, were carried out with a view to bridging some knowledge gaps that exist in their characterization and providing insightful information that could be useful in elucidating their taxonomic status. The morphological and anatomical studies revealed several gametophytic and sporophytic attributes which have not been previously reported and which were diagnostic for the moss species studied. The chromosome studies revealed the chromosome numbers to be Hyophila crenulata n = 4; Thuidium gratum n = 12 (10 + 2 m); Barbula lambarenensis n = 3; Stereophyllum nitense n = 9; and Bryum coronatum n = 10. The study concluded that the details of the morphological and anatomical descriptions as well as the chromosome numbers being reported for the first time in this study for the moss species studied could be very useful in their identification and taxonomic delimitation.

scholarly journals Molecular-level evidence for marine aerosol nucleation of iodic acid and methanesulfonic acid

2021 ◽  
Author(s):  
An Ning ◽  
Ling Liu ◽  
Lin Ji ◽  
Xiuhui Zhang
Keyword(s):  
Molecular Level ◽  
Methanesulfonic Acid ◽  
Field Studies ◽  
Nucleation Mechanism ◽  
Polar Regions ◽  
Atmospheric Conditions ◽  
Iodic Acid ◽  
Quantum Chemical Approach ◽  
Marine Areas ◽  
First Time

Abstract. Both iodic acid (HIO3, IA) and methanesulfonic acid (CH3S(O)2OH, MSA) have been identified by field studies as important precursors of new particle formation (NPF) in marine areas. However, the mechanism of NPF in which IA and MSA are jointly involved is still unclear. Hence, we investigated the IA-MSA nucleation system under different atmospheric conditions and uncovered the corresponding nucleating mechanism at a molecular level for the first time using quantum chemical approach and Atmospheric Cluster Dynamics Code (ACDC). The findings showed that MSA can stabilize IA clusters via both hydrogen and halogen bonds. Moreover, the joint nucleation rate of IA-MSA system is significantly higher than that of IA self-nucleation, particularly in relatively cold marine regions with sparse IA and rich MSA. For the IA-MSA nucleation mechanism, in addition to self-nucleation of IA, the IA-MSA-involved clusters can also directly participate in the nucleation process, and their contribution is particularly prominent in the polar regions with rich MSA and sparse IA. The IA-MSA nucleation mechanism revealed in this work may help to elucidate some missing sources of marine NPF.

scholarly journals Geographical vocabulary of the Shilan dialect of the Erzya-Mordovian language

2020 ◽  
Vol 12 (4) ◽  
pp. 358-367
Author(s):  
Nikolai V. Belenov
Keyword(s):  
Original Composition ◽  
Research Methods ◽  
Field Studies ◽  
The Other ◽  
Volga Region ◽  
The One ◽  
Xix Century ◽  
First Time ◽  
Source Materials ◽  
Made In

Introduction. The article presents the results of research of the geographical vocabulary of the Shilan dialect, one of the Erzya-Mordovian dialects of the Samara region, common among Erzya population of Shilan village in Krasnoyarsk region. The dialect belongs to rare Mordovian dialects of the Samara Volga region that were formed in the region since the middle of the XIX century, and therefore its research is of extra interest. Materials and Methods. The research methods are determined by the purpose and objectives of the study. The analysis of the geographical vocabulary of the Shilan dialect is carried out with the involvement of relevant items made in other Mordovian dialects of Samara region, adjacent territories of neighboring regions, as well as other territories of settlement of the Mordovians. Data on geographical vocabulary of the dialect introduced into research for the first time. The main source materials for the article is based on field studies in Silane village during the field seasons in 2017 and 2020, as well as in other Erzya-Mordovian and Moksha-Mordovian villages of Samara region and adjacent territories in 2015 – 2020. Results and Discussion. The study showed that the geographical vocabulary of the Shilan dialect of the Erzya-Mordovian language is significantly different from the corresponding lexical clusters in other dialects of the Mordovian region, which can be explained by natural geographical conditions surrounding Shilan village and the original composition of this lexical cluster of Erzya immigrants who founded this village. Conclusion. The analysis of the geographical vocabulary of the Shilan dialect allowed, on the one hand, to identify specific features of this cluster that distinguish it from the corresponding materials of other Mordovian dialects of the region, and, on the other hand, to identify common isoglosses between it and a number of the Erzya-Mordovian dialects of the Samara Volga region.

scholarly journals DNA screening of Drosophila suzukii predators in berry field orchards shows new predatory taxonomical groups

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0249673
Author(s):  
Sara Sario ◽  
Conceição Santos ◽  
Fátima Gonçalves ◽  
Laura Torres
Keyword(s):  
Large Scale ◽  
Field Studies ◽  
Life Cycles ◽  
Gut Content ◽  
Drosophila Suzukii ◽  
Potential Predator ◽  
The Family ◽  
First Time ◽  
South Europe ◽  
New Habitats

Drosophila suzukii (spotted wing drosophila, SWD) is a pandemic quarantine pest that attacks mostly red fruits. The high number of life cycles per year, its ability to rapidly invade and spread across new habitats, and highly polyphagous nature, makes this a particularly aggressive invasive species, for which efficient control methods are currently lacking. The use of native natural predators is particularly promising to anchor sustainable and efficient measures to control SWD. While several field studies have suggested the presence of potential predatory species in infested orchards, only a few confirmed the presence of SWD DNA in predators’ gut content. Here, we use a DNA-based approach to identify SWD predators among the arthropod diversity in South Europe, by examining the gut content of potential predator specimens collected in SWD-infested berry fields in North Portugal. These specimens were morphologically identified to the family/order, and their gut content was screened for the presence of SWD DNA using PCR. New SWD predatory taxonomical groups were identified, as Opiliones and Hemerobiidae, in addition to known SWD predators, such as Hemerobiidae, Chrysopidae, Miridae, Carabidae, Formicidae and Araneae. Additionally, the presence of a spider family, Uloboridae, in the orchards was recorded for the first time, posing this family as another SWD-candidate predator. This study sets important bases to further investigate the potential large-scale use of some of these confirmed predator taxa for SWD control in South Europe.

scholarly journals Мансийские исследования: от истоков к современности

2020 ◽  
Vol 13 (3) ◽  
pp. 743-765
Author(s):  
Natalia A. Koshelyuk ◽  
◽  
Keyword(s):  
20Th Century ◽  
18Th Century ◽  
Field Studies ◽  
Online Research ◽  
Late 20Th Century ◽  
Research Activities ◽  
Language Research ◽  
The 19Th Century ◽  
Historical Methods ◽  
First Time

Introduction. The article reviews background studies on the Mansi language and its dialects performed by European and Russian (Soviet) linguists. Goals. The paper seeks to provide a comprehensive historical description of Mansi language research. Methods. The descriptive and comparative-historical methods have been employed thereto. Results. The work arranges the studies chronologically — from earliest research activities to contemporary ones — highlighting most essential achievements. Mansi is one of the least studied languages with earliest written accounts dating to the 16th-17th centuries. The earliest Mansi dictionaries were compiled by explorers and missionaries (I. Kuroedov, S. Cherkalov, P. S. Pallas, etc.) in the 18th century. In the 19th century, the Mansi language officially became a subject of scientific research, and expeditions by Finnish and Hungarian linguists (Antal Reguly, August Engelbrekt Ahlqvist, Bernát Munkácsi, Artturi Kannisto) proved the first field studies. In the 20th century, quite a number of European scientists have contributed to Mansi language research, namely: W. Steinitz, L. Honti, K. F. Кarjalainen, M. Bakró-Nagy, K. Rédei, M. Szilasi, and others. In Russia, the first Mansi studies were initiated by Soviet scholars in the 1930s (V. Chernetsov, A. Balandin). Studies in spoken Mansi evolved into a national Cyrillic alphabet, and for the first time ever there were published comprehensive works dealing with Mansi studies, textbooks on Mansi phonetics, morphology, and grammar. Experimental phonetic explorations emerged in the mid-to-late 20th century resulting in new Mansi dictionaries (A. Sainakhova, T. FrankKamenetskaya, E. Rombandeeva, and others). Mansi studies in the 21st century in Russia and Europe have reached a brand new level: there appeared online research laboratories and linguistic platforms which make it possible to further investigate the Mansi language and verify up-to-date materials.

The optimum cut-off value to differentiate Echinococcus granulosus sensu stricto from other species of E. granulosus sensu lato using larval rostellar hook morphometry

2013 ◽  
Vol 89 (1) ◽  
pp. 1-8 ◽  
Author(s):  
S.V. Soriano ◽  
N.B. Pierangeli ◽  
L.A. Pianciola ◽  
M. Mazzeo ◽  
L.E. Lazzarini ◽  
...  
Keyword(s):  
Molecular Epidemiology ◽  
Echinococcus Granulosus ◽  
Cystic Echinococcosis ◽  
Control Strategies ◽  
High Sensitivity ◽  
Field Studies ◽  
Sensu Stricto ◽  
Roc Curve Analysis ◽  
First Time

AbstractCystic echinococcosis caused by Echinococcus granulosus sensu lato is one of the most important helminth zoonoses in the world; it affects both humans and livestock. The disease is endemic in Argentina and highly endemic in the province of Neuquén. Considerable genetic and phenotypic variation has been demonstrated in E. granulosus, and ten different genotypes (G1–G10) have been identified using molecular tools. Echinococcus granulosus sensu lato may be considered a species complex, comprised of E. granulosus sensu stricto (G1–G3), E. equinus (G4), E. ortleppi (G5) and E. canadensis (G6–G10). In endemic areas, the characterization of cystic echinococcosis molecular epidemiology is important in order to apply adequate control strategies. A cut-off value for larval large hook total length to distinguish E. granulosus sensu stricto isolates from those produced by other species of the complex was defined for the first time. Overall, 1780 larval hooks of 36 isolates obtained from sheep (n= 11, G1), goats (n= 10, G6), cattle (n= 5, G6) and pigs (n= 10, G7) were analysed. Validation against molecular genotyping as gold standard was carried out using the receiver operating characteristic (ROC) curve analysis. The optimum cut-off value was defined as 26.5 μm. The proposed method showed high sensitivity (97.8%) and specificity (91.1%). Since in most endemic regions the molecular epidemiology of echinococcosis includes the coexistence of the widely distributed E. granulosus sensu stricto G1 strain and other species of the complex, this technique could be useful as a quick and economical tool for epidemiological and surveillance field studies, when fertile cysts are present.

Additions to the lichen flora of the Kerzhensky Nature Reserve and Nizhny Novgorod Region

2021 ◽  
Vol 55 (1) ◽  
pp. 195-213
Author(s):  
I. N. Urbanavichene ◽  
G. P. Urbanavichus
Keyword(s):  
Rare Species ◽  
Nature Reserve ◽  
Field Studies ◽  
River Valley ◽  
European Russia ◽  
Annotated List ◽  
First Time ◽  
Nizhny Novgorod Region ◽  
Lichen Flora

The results of field studies of the lichen flora of the Kerzhensky Reserve (Nizhny Novgorod Region), carried out mainly in the Kerzhenets River valley in May 2019, are presented. An annotated list of taxa previously unknown for the reserve includes 121 species from 70 genera. Of these, 97 species and 31 genera are new to the Nizhny Novgorod Region. The species Micarea soralifera and Rinodina excrescens are published for the first time for European Russia. We have found some very rare species in European Russia previously known from single records (Agonimia repleta, Bacidina indigens, Gyalideopsis alnicola, Sclerophora amabilis, Stigmidium mycobilimbiae, Telogalla olivieri, and Verrucaria ochrostoma).

Distinguishing ten sympatric species of fiddler crab (Decapoda: Ocypodidae) using a suite of phenotypic characteristics

Zootaxa ◽  
2021 ◽  
Vol 5026 (4) ◽  
pp. 480-506
Author(s):  
LAURA A. MICHIE ◽  
R. S. K. BARNES ◽  
PAUL F. CLARK ◽  
WAYNE A. BENNETT ◽  
SIMON M. CRAGG
Keyword(s):  
Fiddler Crab ◽  
Taxonomic Revision ◽  
Field Studies ◽  
Sympatric Species ◽  
Phenotypic Characteristics ◽  
Biogeographic Region ◽  
Males And Females ◽  
First Time ◽  
The Village ◽  
Major Cheliped

Ten species of fiddler crab are reported inhabiting the intertidal zone of a shore on Kaledupa Island, Indonesia. This is one of the highest recorded numbers of fiddler crab species living in sympatry, equating to over two-thirds of those known from the Wallacea biogeographic region and more than half of all those recorded from Indonesia. The descriptions to identify and distinguish these ten species are provided using a suite of characters e.g., carapace, major cheliped, male gonopods, gastric mills, life colouration in males and females, and notes on their ecology and distribution. Specimens were observed and collected in the Wakatobi National Park, near the village of Ambeua on Kaledupa island, Sulawesi Tenggara, Indonesia. Gastric mills are described for the first time for Gelasimus jocelynae, Paraleptuca crassipes, Tubuca coarctata, T. demani and T. dussumieri. A tabulation of anatomical features and colouration for all species in this study is provided as a support for field studies. It identifies features that support the recently proposed taxonomic revision of fiddler crabs by Shih et al. (2016).  

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