scholarly journals Current state, habitat and potential invasiveness of Montia linearis (Douglas ex Hook.) Greene in Poland

2015 ◽  
Vol 84 (3) ◽  
pp. 347-356
Author(s):  
Iwona Dembicz ◽  
Łukasz Kozub ◽  
Piotr T. Zaniewski

<p><em>Montia linearis</em> is a vascular plant originating from western North America. The expansion of this species has been observed for several decades. For the first time <em>M. linearis</em> was found in Europe in 1989. Further six populations were documented by 2004 within the continent: three in Poland, two in Denmark and one in Hungary.</p><p>Apart from discovering a new population of <em>M. linearis</em>, we confirmed two out of the three previously known localities of the species in Poland. All the currently known populations of <em>M. linearis</em> occupied predominantly meadow habitats, especially intensively managed sites. Some individuals were also found in disturbed sites with bare soil. The studied species inhabited soils of various types with broad range of fertility as well as humidity. <em>Montia linearis</em> populations reached densities up to 87 individuals per 0.04 m<sup>2</sup>. The number of seeds produced by an individual was between 10 and 55 in 90% of the studied specimens, however much more fertile specimens were also observed.</p><p>As the previously presented hypothesis of <em>M. linearis</em> dispersal with rail transport seemed not to be well supported, the connection between the <em>M. linearis</em> presence and cattle husbandry is considered. It is possible that the species can be transferred with living animals or manure.</p><p>The species was able to survive for at least 26 years within once inhabited site. Further spread of <em>M. linearis</em> within Europe is highly probable. The aim of the study is to: (i) describe the current state of populations of <em>M. linearis</em> in Poland, (ii) provide information on habitat preferences and biology of the species, (iii) assess the invasiveness potential of <em>M. linearis</em> in Poland.</p>

2020 ◽  
pp. 22-38
Author(s):  
Natalia Guseva ◽  
Vitaliy Berdutin

At present, the problem of establishing disability is a point at issue in Russia. Despite the fact that medical criteria for disability are being developed very actively, high-quality methods for assessing social hallmarks are still lacking. Since disability is a phenomenon inherent in any society, each state forms a social and economic policy for people with disabilities in accordance with its level of development, priorities and opportunities. We have proposed a three-stage model, which includes a system for the consistent solution of the main tasks aimed at studying the causes and consequences of the problems encountered today in the social protection of citizens with health problems. The article shows why the existing approaches to the determination of disability and rehabilitation programs do not correspond to the current state of Russian society and why a decrease in the rate of persons recognized as disabled for the first time does not indicate an improvement in the health of the population. The authors proposed a number of measures with a view to correcting the situation according to the results of the study.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shreeya Sriram ◽  
Shitij Avlani ◽  
Matthew P. Ward ◽  
Shreyas Sen

AbstractContinuous multi-channel monitoring of biopotential signals is vital in understanding the body as a whole, facilitating accurate models and predictions in neural research. The current state of the art in wireless technologies for untethered biopotential recordings rely on radiative electromagnetic (EM) fields. In such transmissions, only a small fraction of this energy is received since the EM fields are widely radiated resulting in lossy inefficient systems. Using the body as a communication medium (similar to a ’wire’) allows for the containment of the energy within the body, yielding order(s) of magnitude lower energy than radiative EM communication. In this work, we introduce Animal Body Communication (ABC), which utilizes the concept of using the body as a medium into the domain of untethered animal biopotential recording. This work, for the first time, develops the theory and models for animal body communication circuitry and channel loss. Using this theoretical model, a sub-inch$$^3$$ 3 [1″ × 1″ × 0.4″], custom-designed sensor node is built using off the shelf components which is capable of sensing and transmitting biopotential signals, through the body of the rat at significantly lower powers compared to traditional wireless transmissions. In-vivo experimental analysis proves that ABC successfully transmits acquired electrocardiogram (EKG) signals through the body with correlation $$>99\%$$ > 99 % when compared to traditional wireless communication modalities, with a 50$$\times$$ × reduction in power consumption.


2015 ◽  
Vol 129 (1) ◽  
pp. 24 ◽  
Author(s):  
Paul C. Sokoloff

New collections of vascular plants, bryophytes, lichen, and algae are reported for Cunningham Inlet on the north coast of Somerset Island, Nunavut. This list of 48 species of vascular plants, 13 bryophytes, 10 lichens, and five algae includes 136 specimens collected in 2013 and 39 previously unreported specimens from the National Herbarium of Canada at the Canadian Museum of Nature (CAN), Agriculture and Agri-Food Canada’s Vascular Plant Herbarium (DAO), and University of Alberta (ALTA). Ten vascular plants from previous collecting in 1958 are re-reported here to give a comprehensive account of the vascular plant flora of the region. Two vascular plants are recorded for the first time for Somerset Island: Smooth Draba (Draba glabella Pursh) and Edlund’s Fescue (Festuca edlundiae S. G. Aiken, Consaul & Lefkovitch).


2021 ◽  
Vol 30 (1) ◽  
pp. 25-39
Author(s):  
M.J. Ebejer

All 41 species of Dolichopodidae in 22 genera (excluding one species each in the subfamilies Microphorinae and Parathalassinae) known to occur on the Maltese Islands are reviewed, with 31 of these being recorded for the first time. Habitat preferences and flight periods of the species recorded are tabulated and discussed.


2017 ◽  
pp. 133-136
Author(s):  
Emanuele Guido Condello ◽  
Edoardo Razzetti ◽  
Cristiano Liuzzi ◽  
Vittoria D’Agostino ◽  
Fabio Mastropasqua

Two populations of Brachythemis impartita (Karsch, 1890) are here reported in peninsular Italy. The species was found for the first time in 2015 in Calabria in the area of the Angitola artificial lake (Maierato and Monterosso Calabro municipalities) not far from the Tyrrhenian coast. In 2016 the species was also observed in southern Apulia, along the banks of two artificial lagoons in the municipality of Ugento. Information are provided that confirm the habitat preferences of the species and a northward expansion.


2020 ◽  
Vol 41 (2) ◽  
pp. 213-220
Author(s):  
Fermín Del Egido ◽  
Patricio Bariego ◽  
Alberto Rodríguez ◽  
María Santos Vicente

We provide new records and notes on 25 protected and/or threatened vascular plant species in Castilla y León. Some of them illustrate not only new findings but also an interesting expansion of their geographic range. Eight taxa are reported for the first time in some provinces, while eleven of them were two or three times previously reported.


2020 ◽  
Vol 9 (3) ◽  
pp. 142-147
Author(s):  
Olga E. Tokar

This paper analyzes the current state of landscaping in Ishim. The data on the qualitative and quantitative characteristics of woody plants have been obtained for the first time; the assessment of trees and shrubs state is based on the analysis of the vitality index. A database of green plants within 21 objects in Ishim was created and analyzed. The paper also contains data on the species diversity of trees and shrubs in Ishim. It turned out that the objects under study have trees and shrubs placed in special dividing strips, linearly, in rows or in small compact groups, less often they are planted singly. The species composition is represented by 47 species from 28 genera, 16 families and 2 divisions. The biomorphological structure is represented by trees (25, or 53% of species) and shrubs (22, or 47% of species). The total composition of tree and shrub plantations, determined by the number of trunks (bushes) and the percentage of woody plants, is 2854; the composition of the preserved ones is 2 815 (99%) pieces; the ones assigned for removal are 39 (1%) pcs. The vitality index shows that among 85% of the studied objects of the town at the time of the survey were healthy, among 10% of the objects they were qualified as damaged, among 5% of them were severely damaged. Based on the results of examining crowns and trunks of woody plants, signs of diseases and pests, a plan of measures for the treatment, restoration and preservation of woody plants was drawn up and recommendations were given for caring, sanitary felling and removal of single specimens.


2021 ◽  
Vol 8 (2) ◽  
pp. 12-14
Author(s):  
Bolívar R. Garcete-Barrett ◽  
◽  
Sergio D. Rios ◽  
Sergio Galeano ◽  
◽  
...  

The Western conifer seed bug, Leptoglossus occidentalis Heidemann, 1910, native to western North America and in ongoing worldwide expansion, is recorded from Paraguay for the first time.


PhytoKeys ◽  
2018 ◽  
Vol 113 ◽  
pp. 1-31 ◽  
Author(s):  
David J. Goyder ◽  
Nigel Barker ◽  
Stoffel P. Bester ◽  
Arnold Frisby ◽  
Matt Janks ◽  
...  

This paper aims to provide a baseline for conservation planning by documenting patterns of plant diversity and vegetation in the upper catchment of the Cuito River. 417 species are recorded from this region. Nine of these are species potentially new to science. Ten species are newly recorded from Angola, with an additional species only recorded previously within Angola from the northern enclave of Cabinda. The 108 new provincial records for Moxico clearly indicate the lack of collections from Angola’s largest province. We note the existence of extensive peat deposits in the Cuito river system for the first time and suggest that one of Barbosa’s vegetation types in the area needs to be reassessed.


Author(s):  
I.V. Mosharova ◽  
V.V. Il’inskij ◽  
O.V. Il’ina

Sanitary and microbiological researches of a coastal surface water of the southern part of Lake Baikal (from the Listvyanka to the Tanghui) were conducted in June, 2017. Total number of bacteria varied over a wide range – from 0.93 million сells/ml up to 2:05 million сells/ml, with an average 1.41 ± 0.3 million сells/ml. Biomass of bacteria varied from 11.05 to 305.00 mg С/m3, with an average of 123.34 mg С/m3. Coastal waters of the southern site of Lake Baikal mainly had a beta-meso-saprobic status in June, 2017. The total microbial number was determined with the use of the test systems for the first time. The values of the total microbial number were less than 1 000 COU/ml and varied from 9 to 412 COU/ml. Innovative test systems Petrifilm are of great interest for rapid assessments of the sanitary and microbiological status of reservoirs directly in the field conditions.


Sign in / Sign up

Export Citation Format

Share Document