Diversity of the Cyanoprokaryota in polar deserts of Innvika cove North-East Land (Nordaustlandet) Island, Spitsbergen

2016 ◽  
Vol 6 (1) ◽  
pp. 66-79 ◽  
Author(s):  
Denis Davydov
Keyword(s):  
Common Species ◽  
Southern Coast ◽  
Nostoc Commune ◽  
The West ◽  
North East ◽  
West Part ◽  
Wet Rocks ◽  
First Time ◽  
Very High ◽  
Sørensen Index

The study of polar deserts cyanoprokaryotes up to now is few. Foremost this is connected with difficulty visiting of the area. The paper presents the results of a study of сyanoprokaryota on the southern coast of Innvika cove (Fotherbyfjorden bay, North-East Land Island, Spitsbergen archipelago). A total of 74 taxa were observed in various habitats of investigated area. Nine species are reported for the first time for Spitsbergen flora. Gloeocapsopsis magma (20 observations), Nostoc commune (19), Microcoleus autumnalis (17) were the most common species in the investigated samples. The most number of species (42) was found on wet rocks. The similarity Sorensen index between wet rock species, seepage species and pools species is very high. It can mean that for many species the only necessary preference in habitat is a rock substrate and wetting. Most similar are the flora of the Innvika area and flora of the west part of Oscar II Land (61%).

Cyanoprokaryotes of the west part of Oscar II Land, West Spitsbergen Island, Spitsbergen archipelago

2017 ◽  
Vol 7 (1) ◽  
pp. 94-108 ◽  
Author(s):  
Denis Davydov
Keyword(s):  
Nostoc Commune ◽  
Svalbard Archipelago ◽  
Microcoleus Vaginatus ◽  
New Information ◽  
Geological Conditions ◽  
West Part ◽  
Wet Rocks ◽  
Almost All ◽  
West Spitsbergen ◽  
First Time

The present study provides new information about the diversity of freshwater and terrestrial cyanoprokaryotes of the western part of the Oscar II Land, Spitsbergen (Svalbard) archipelago. Altogether, and 51 taxa were found in different habitats (29 species was found on wet rocks, 21 on the seepages, 18 on the lakes, 11 on the moss tundra), mainly in wet ones. Nostoc commune, Gloeocapsa kuetzingiana, Microcoleus autumnalis, and Microcoleus vaginatus dominated almost all types of habitats. Aphanocapsa rivularis and Woronichinia karelica are reported for the first time for Spitsbergen flora. The studied flora is most similar to the flora of the vicinity of settlement Pyramiden. Since all these areas are dominated by carbonate rocks, it can assume that this might be due to the similarity of the geological conditions. In general, the cyanobacterial (cyanoprokaryotes) flora of western part of the Oscar II Land includes widespread, frequent and typical Spitsbergen species.

scholarly journals The Whitefly Dialeurodes citri: A New Pest on Citrus in Tunisia?

2021 ◽  
Vol 16 (1) ◽  
pp. 11-18
Author(s):  
Synda Boulahia-Kheder ◽  
Keyword(s):  
Common Species ◽  
Biological Traits ◽  
Severe Damage ◽  
Control Programs ◽  
North East ◽  
Dialeurodes Citri ◽  
Citrus Orchards ◽  
Parabemisia Myricae ◽  
Very High ◽  
New Pest

Whiteflies invaded citrus orchards in Tunisia in the 90’s. Two species: Aleurothixus floccosus and Parabemisia myricae have been recorded successively infesting citrus and causing severe damage in Cap-Bon (North-East of Tunisia). These pests were first controlled by several insecticidal applications but with a relative efficiency. Then two biological control programs have been deployed completing the action of native natural enemies especially for P. myricae. The result was a very satisfactory control of both whitefly species, to a point that they almost disappeared from orchards for about 30 years. In 2017, a third whitefly species, identified as Dialeurodes citri, was observed during a prospection in citrus orchards in Takelsa region (Cap-Bon). It was a common species in Algeria, but never caused damage in Tunisia. In 2020, D. citri was found again with very high population densities in the regions of Menzel Bou Zelfa (Cap-Bon) and Tunis. These observations confirmed its change of status and spread in Tunisia. The main morphological and biological traits to distinguish between D. citri and the other two whitefly species, already recorded in Tunisia, were described and first observations on its infestation were reported. Some recommendations to manage this new pest are given.

Level of endemism in high-mountain flora of isolated Fisht-Oshten massif and Black Sea Chain

2019 ◽  
pp. 122-131
Author(s):  
I. N. Timukhin
Keyword(s):  
Black Sea ◽  
High Mountain ◽  
The West ◽  
The Caucasus ◽  
North West ◽  
The Third ◽  
West Part ◽  
Current Area ◽  
High Level ◽  
First Time

For the first time the level of endemism in high-mountain flora of north-west edge of uplands of the Caucasus was estimated. A uniquely high level of endemism in Fisht-Oshten Massif and Chernomorskaya (Black Sea) Chain was observed: 28.4% (342 species) with predominance of Caucasian (9.2%), Pan Caucasian (7.4%) and West-Caucasian (5.1%) endemics. Colchis and North Colchis endemics total take 5.8%, and together with local endemics riches the third position. The level of endemism of alpine species is one of the highest in the Caucasus and is 43.2% (276 species). The levels of endemism revealed general trends, depending on the remoteness of local flora from the main diaspora on the Fisht-Oshten massif and the current area of the meadow belt. These trends are visible for endemics of all ranks, with the exception of the West Caucasian endemic, whose number is higher in the eastern part of Black Sea Chain and is falling sharply to the west part.

scholarly journals New records of weevils (Coleoptera: Curculionoidea) in Volyn Polesia (Ukraine)

2019 ◽  
Vol 27 (2) ◽  
pp. 16-22
Author(s):  
S. V. Volovnyk ◽  
V. Yu. Nazarenko ◽  
P. L. Voitko
Keyword(s):  
Host Plant ◽  
Additional Data ◽  
New Records ◽  
Range Limit ◽  
The West ◽  
New Host ◽  
Carpinus Betulus ◽  
Annotated List ◽  
West Part ◽  
First Time

An annotated list of new records of 45 weevil species is provided. Hadroplontus litura, Larinus iaceae, Magdalis exarata, Pissodes validirostris, Stereocorynes truncorum, Platystomos albinus, Nanophyes globiformis, Ceutorhynchus dubius, and Dorytomus suratus are registered in Ukrainian Polesia for the first time. 34 species are recorded in the west part of Volynian Polesia (= Volyn Region) for the first time. Total known richness of weevils in Volyn Region is increased by 9%. Currently, the list of Curculionoideae inhabiting Volyn Region includes 386 species and subspecies. Additional data on 11 species rare in Ukraine are given. The west range limit of Asproparthenis foveocollis is extended to Volyn Polesia. Discovery of Asproparthenis vexata in Volyn Polesia confirms coexistence of specific insect assemblages associated with endemic psammophilous flora. An alien Lygniodes bischoffi entered into Ukrainian Polesia presumably from Poland. The hornbeam, Carpinus betulus was detected as a new host plant of Cossonus cylindricus for the first time.

scholarly journals KETERDAPATAN HALOYSIT DAN IKUTANNYA DI PERAIRAN UTARA JAWA TIMUR

2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Udaya Kamiludin ◽  
Noor C.D. Aryanto
Keyword(s):  
Aluminum Content ◽  
Major Element ◽  
Sediment Accumulation ◽  
X Ray Diffraction ◽  
The West ◽  
X Ray ◽  
North East ◽  
Investigation Area ◽  
Fine Grain ◽  
West Part

Perairan Utara Jawa Timur adalah perairan berenergi rendah yang berkaitan erat dengan akumulasi sedimen berbutir halus. Berdasarkan hasil pengolahan data granulometri menunjukkan sebagian besar percontohan sedimen diklasifikasikan kedalam lanau. Hasil Analisis “X-ray diffraction”, lanau yang secara megaskopis sebagai lempung mengandung mineral lempung jenis Haloysit; ikutannya yaitu kuarsa alfa, kalsit, feldspar, halit dan hematit. Hasil analisis mineral menunjukan haloysit ini mempunyai persentase antara 38,57-55,79 % dengan penyusunnya terlihat dari hasil analisis kimia unsur utama berupa aluminium dalam Al2O3 dan silikon dalam SiO2. Keterdapatan haloysit terbentuk secara mekanik dari pelapukan mineral aluminosilikat, seperti feldspar yang bersumber dari batuan volkanik di bagian barat dan bahan gunungapi di sebelah selatan daerah penelitian. Kata kunci : Lanau, haloysit, feldspar, perairan Utara Jawa Timur North East Java waters is a low energy waters in relation to fine grain sediment accumulation. Based on the processing results of granulometry data show the majority sample of sediment classified into silt. Results of X-ray diffraction analysis, silt megascopically described as clay which is consisted of clay mineral of halloysite type; its associations are quartz alpha, calcite, feldspar, halite and hematite. Mineral analyses results show the halloysite has percentage between 38,57 - 55,79 % with composition confirmed from major element chemical analysis which show aluminum content in Al2O3 and silicon in SiO2. The occurrence of halloysite formed through mechanical processes from surface weathering of aluminosilicate minerals, as feldspars which source from volcanic rock in the west part and from volcanic materials in the south side of the investigation area. Keywords : silt, halloysite, feldspar, Northeast Java waters.

scholarly journals Investigating Volcanic Plumes from Mt. Etna Eruptions of December 2015 by Means of AVHRR and SEVIRI Data

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1174 ◽  
Author(s):  
Francesco Marchese ◽  
Alfredo Falconieri ◽  
Carolina Filizzola ◽  
Nicola Pergola ◽  
Valerio Tramutoli
Keyword(s):  
Eruption Rate ◽  
Volcanic Plumes ◽  
Average Value ◽  
North East ◽  
Infrared Imager ◽  
Rapid Sequence ◽  
Eruptive Column ◽  
Mt Etna ◽  
First Time ◽  
Very High

In early December 2015, a rapid sequence of strong paroxysmal events took place at the Mt. Etna crater area (Sicily, Italy). Intense paroxysms from the Voragine crater (VOR) generated an eruptive column extending up to an altitude of about 15 km above sea level. In the following days, other minor ash emissions occurred from summit craters. In this study, we present results achieved by monitoring Mt. Etna plumes by means of RSTASH (Robust Satellite Techniques-Ash) algorithm, running operationally at the Institute of Methodologies for Environmental Analysis (IMAA) on Advanced Very High Resolution Radiometer (AVHRR) data. Results showed that RSTASH detected an ash plume dispersing from Mt. Etna towards Ionian Sea starting from 3 December at 08:40 UTC, whereas it did not identify ash pixels on satellite data of same day at 04:20 UTC and 04:40 UTC (acquired soon after the end of first paroxysm from VOR), due to a mixed cloud containing SO2 and ice. During 8–10 December, the continuity of RSTASH detections allowed us to estimate the mass eruption rate (an average value of about 1.5 × 103 kg/s was retrieved here), quantitatively characterizing the eruptive activity from North East Crater (NEC). The work, exploiting information provided also by Spinning Enhanced Visible and Infrared Imager (SEVIRI) data, confirms the important contribution offered by RSTASH in identifying and tracking ash plumes emitted from Mt. Etna, despite some operational limitations (e.g., cloud coverage). Moreover, it shows that an experimental RST product, tailored to SEVIRI data, for the first time used and preliminarily assessed here, may complement RSTASH detections providing information about areas mostly affected by volcanic SO2.

Copepods associated with Phallusia mamillata and Ciona intestinalis (Tunicata) in the area of Taranto (Ionian Sea, southern Italy)

2001 ◽  
Vol 81 (3) ◽  
pp. 427-432 ◽  
Author(s):  
Michele Pastore
Keyword(s):  
Sex Ratio ◽  
Southern Italy ◽  
Diversity Index ◽  
Ciona Intestinalis ◽  
Common Species ◽  
Ionian Sea ◽  
Parasitic Copepods ◽  
First Time ◽  
Sea Squirts ◽  
Sørensen Index

Commensal and parasitic copepods (Arthropoda: Crustacea: Copepoda) of two common species of sea squirts, Phallusia mamillata and Ciona intestinalis have been investigated in the sea of Taranto (southern Italy).A total of 2590 specimens of copepods were collected (five families, eight genera and 13 species). The sex ratio on 2582 specimens was 1228 males (47·56%) to 1354 females (52·44%).The species were identified by the hosts in which they were found, their sex ratio host by host, and the specific variability and affinity analysis by means of the Sørensen index and the diversity index by means of the Shannon application.Some species of copepods have been found for the first time as in Ciona intestinalis (Hermannella rostrata) and in Phallusia mamillata (Notodelphys canui, Doropygus pulex, Pachypygus gibber, Notopterophorus auritus, Lichomolgus albens, Hersiliodes latericia). The association Notodelphys canui–Doropygus pulex—Notopterophorus auritu–Lichomolgus albens is noted for the first time in the Mediterranean Sea.

Excavations in Midea 2007

2009 ◽  
Vol 2 ◽  
pp. 7-30 ◽  
Author(s):  
Katie Demakopoulou ◽  
Nicoletta Divari-Valakou ◽  
Monica Nilsson ◽  
Ann-Louise Schallin
Keyword(s):  
Bronze Age ◽  
Early Phase ◽  
The West ◽  
Large Section ◽  
Ample Evidence ◽  
West Part ◽  
Large Opening

Excavations in Midea continued in 2007 as a Greek-Swedish programme under the direction of Dr Katie Demakopoulou in collaboration with Dr Ann-Louise Schallin. In the West Gate area excavation continued in the west part of the building complex that abuts the fortification wall. Room XIV was excavated with abundant remains of LH IIIB2 pottery. A sealstone with a unique, possibly ritual, scene was also found. On the lower west terrace of the acropolis excavation continued in Trench C, where a large section of the fortification wall was uncovered. Room I was excavated here, adjacent to the inner face of the fortification wall. Finds in this room date to the early phase of LH IIIC, under which there was ample evidence of the LH IIIB2 destruction, including human skeletons. Under this debris, a large opening leading to a gallery or syrinx through the thickness of the fortification wall was found. Excavation was resumed also in the East Gate area, where a new wall was revealed in the baulk between Trench 3 and Room 9. The wall is perpendicular to the citadel wall and borders Trench 3. Excavation was also resumed in Trenches 9 and 14. The latest Mycenaean material in this area dates to LH IIIB2, but there is evidence of post-Bronze Age activity, which is demonstrated mainly by pottery finds.

Peregrinação Acadêmica: A mulher Romeira do Bom Jesus da Lapa

2020 ◽  
Author(s):  
Sandra Célia Coelho Gomes da Silva
Keyword(s):  
Gender Identity ◽  
Social Reproduction ◽  
Participant Observation ◽  
Female Gender ◽  
Age Group ◽  
Structured Interviews ◽  
The West ◽  
Patriarchal Family ◽  
The Family ◽  
West Part

This work is the result of the doctoral thesis entitled Pilgrimage of Bom Jesus da Lapa: Social Reproduction of the Family and Female Gender Identity, specifically the second chapter that talks about women in the Pilgrimage of Bom Jesus da Lapa, emphasizing gender relations, analyzing the location of the pilgrimage as a social reproduction of the patriarchal family and female gender identity. The research scenario is the Bom Jesus da Lapa Pilgrimage, which has been held for 329 years, in that city, located in the West part of Bahia. The research participants are pilgrim women who are in the age group between 50 and 70 years old and have participated, for more than five consecutive years in the Bom Jesus da Lapa Pilgrimage, belonging to five Brazilian states (Bahia, Minas Gerais, São Paulo, Espírito Santo and Goiás) that register a higher frequency of attendance at this religious event. We used bibliographic, qualitative, field and documentary research and data collection as our methodology; we applied participant observation and semi-structured interviews as a technique. We concluded that the Bom Jesus da Lapa Pilgrimage is a location for family social reproduction and the female gender identity, observing a contrast in the resignification of the role and in the profile of the pilgrim women from Bom Jesus da Lapa, alternating between permanence and the transformation of gender identity coming from patriarchy.

Mosses and lichens of Shokalsky Island (Kara Sea, Yamal-Nenets Autonomous Area)

2020 ◽  
Vol 54 (2) ◽  
pp. 497-513 ◽  
Author(s):  
L. N. Beldiman ◽  
I. N. Urbanavichene ◽  
V. E. Fedosov ◽  
E. Yu. Kuzmina
Keyword(s):  
Plant Communities ◽  
Species Distribution ◽  
Arctic Tundra ◽  
Kara Sea ◽  
Lichenicolous Fungi ◽  
South West ◽  
West Part ◽  
First Time ◽  
Nenets Autonomous ◽  
Made In

We studied in detail a moss-lichen component of Shokalsky Island vegetation for the first time and identified 79 species of mosses and 54 species and 2 subspecies of lichens and lichenicolous fungi. All species of mosses and 23 species and 2 subspecies of lichens and lichenicolous fungi are recorded for the first time for the island. The study is based on collections made in South West part of the island, in arctic tundra. We also explored the participation of the mosses and lichens in the main types of plant communities and the species distribution in 10 ecotopes. The paper describes the noteworthy findings (Abrothallus parmeliarum, Aongstroemia longipes, Arthonia peltigerea, Caloplaca caesiorufella, Catillaria stereocaulorum, Ceratodon heterophyllus, Lecanora leptacinella, Sphagnum concinnum, S. olafii) and features of bryo- and lichenoflora of Shokalsky Island.

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