scholarly journals Nesting features of the red squirrel (Sciurus vulgaris) in conditions of Kamianets-Podilskyi

2021 ◽  
Vol 2020 (20) ◽  
pp. 139-149
Author(s):  
Mykola Matvieiev ◽  
◽  
Olena Buchatska ◽  
Keyword(s):  
Tree Species ◽  
Juglans Regia ◽  
Industrial Area ◽  
Red Squirrel ◽  
Sciurus Vulgaris ◽  
Salix Alba ◽  
Biotopic Distribution ◽  
Entire Area ◽  
Birch Tree ◽  
Norway Maple

Research on the biotopic distribution, abundance, and specific nesting features of the European red squirrel (Sciurus vulgaris) was carried out from October 2016 until May 2017 in the entire area of Kamianets-Podilskiy (Khmelnitskiy Oblast, Ukraine). By its construction type and tree vegetation, the following biotopes were singled out in the town area: one-storey buildings, multi-storey buildings, mixed housing types, parks, industrial area, the Smotrych river’s canyon, and gardening area. In total, 272 nests of the European red squirrel were registered, including 89 nests in parks (32.7 % of the total number of nests), 79 in the industrial area (29.0 %), 49 in the mixed housing area (18.0 %), 19 in the area of multi-storey buildings (7.0 %), 13 in the area of one-storey buildings (4.8 %), 12 in the gardening area (4.4 %), and 11 in the canyon of the Smotrych river (4.0 %). In Kamianets-Podilskiy and its surroundings, 178 178 pairs of the European red squirrel were recorded, what makes up 65.4 % of the number of registered nests. The population density (pair/km2) of the red squirrel in Kamianets-Podilskiy is 6.4 pairs/km2. The highest density was observed in the forest-park area (43.3 pairs/km2), in the canyon of the Smotrych river (10.7 pairs/km2), and in the area multi-storey buildings (9.1 pairs/km2). Squirrel nests were observed on 21 tree species, including the linden Тіlіа sp., the asp Populus sp., the chestnut Aesculus hippocastanum, the sycamore tree Acer tataricum, the field maple Асеr саmреstrе, the elm tree Ulmus laevis, the sweet cherry Prunus sp., the maple Acer negundo, the fir tree Рісеа sp., the walnut tree Juglans regia, the horn beech Саrріnus bеculus, the willow Salix alba, the acacia Robinia pseudoacacia, the ash tree Frахіnus ехсеlsіоr, the birch tree Betula sp., the poplar Populus sp., the pyramidal poplar Populus pyramidalis, the cedar Thuja occidentalis, the Norway maple Acer platanoides, the honey locust Gleditsia triacanthos, and the oak Quеrсus rоbur. Most nests were located on the pyramidal poplar (24.1 %), linden (19.7 %), and Norway maple (13.7 %), while the least number of nests was found on the fir tree (0.8 %) and chestnut (0.8 %). The European red squirrel usually arranges its nests at the height of 3.5 m to 23 m, in average 9.3 m. The specific features of location of squirrel nests depend on the tree species (the highest nests being located on the ash tree, pyramidal poplar, and the lowest nests being on the fir tree and cedar). The squirrel mostly arranges its nests at whorls usually made up of 3–4 branches (51.9 %), near the trunk (32.7 %), on the branches (13.0 %) and between trunks (2.4 %).

Managed parks as a refuge for the threatened red squirrel ( Sciurus vulgaris ) in light of human disturbance

2017 ◽  
Vol 211 ◽  
pp. 29-36 ◽  
Author(s):  
Amy Haigh ◽  
Fidelma Butler ◽  
Ruth O'Riordan ◽  
Rupert Palme
Keyword(s):  
Human Disturbance ◽  
Red Squirrel ◽  
Sciurus Vulgaris

A Note on the Association of Fall Cankerworm (Alsophila pometaria (Harr.)) with Winter Moth (Operophtera brumata (Linn.)) (Lepidoptera: Geometridae)

1958 ◽  
Vol 90 (9) ◽  
pp. 538-540 ◽  
Author(s):  
C. C. Smith
Keyword(s):  
Tree Species ◽  
Life Histories ◽  
Quercus Rubra ◽  
Acer Platanoides ◽  
Operophtera Brumata ◽  
Ulmus Americana ◽  
Winter Moth ◽  
The Third ◽  
Norway Maple ◽  
Fall Cankerworm

The fall cankerworm, Alsophila pometaria (Harr.), and the winter moth, Operophtera brumata (Linn.), both feed to a great extent on the same tree species and prefer apple, Malus spp., red oak, Quercus rubra L., basswood, Tilia spp., white elm, Ulmus americana L., and Norway maple, Acer platanoides L. They also have similar life-histories and habits (Smith 1950 and 1953). Both lay their eggs on the trees in the fall and overwinter in this stage. The eggs hatch about the same time and the larvae of (both species mature about the third week in June. They drop to the ground and form cocoons at a depth of about an inch. The adults emerge about the same time, commencing usually during the last week in October and continuing until early December or until the ground freezes.

scholarly journals Phytodepuration of Nitrate Contaminated Water Using Four Different Tree Species

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 515
Author(s):  
Luca Regni ◽  
Maria Luce Bartucca ◽  
Euro Pannacci ◽  
Francesco Tei ◽  
Daniele Del Buono ◽  
...  
Keyword(s):  
Tree Species ◽  
Photosynthetic Activity ◽  
Dry Weight ◽  
Contaminated Water ◽  
Buffer Strips ◽  
Sambucus Nigra ◽  
Salix Alba ◽  
Global Issue ◽  
Corylus Avellana L ◽  
Agricultural Areas

Water pollution by excessive amounts of nitrate (NO3−) has become a global issue. Technologies to clean up nitrate-contaminated water bodies include phytoremediation. In this context, this research aimed to evaluate four tree species (Salix alba L., Populus alba L., Corylus avellana L. and Sambucus nigra L.) to remediate nitrate-contaminated waters (100 and 300 mg L−1). Some physiological parameters showed that S. alba L. and P. alba L. increased particularly photosynthetic activity, chlorophyll content, dry weight, and transpired water, following the treatments with the above NO3− concentrations. Furthermore, these species were more efficient than the others studied in the phytodepuration of water contaminated by the two NO3− levels. In particular, within 15 days of treatment, S. alba L. and P. alba L. removed nitrate quantities ranging from 39 to 78%. Differently, C. avellana L. and S. nigra L. did not show particular responses regarding the physiological traits studied. Nonetheless, these species removed up to 30% of nitrate from water. In conclusion, these data provide exciting indications on the chance of using S. alba L. and P. alba L. to populate buffer strips to avoid NO3− environmental dispersion in agricultural areas.

scholarly journals Loss of Octarepeats in Two Processed Prion Pseudogenes in the Red Squirrel, Sciurus vulgaris

2010 ◽  
Vol 71 (5-6) ◽  
pp. 356-363
Author(s):  
Ole Madsen ◽  
Timothy T. Kortum ◽  
Marlinda Hupkes ◽  
Wouter Kohlen ◽  
Teun van Rheede ◽  
...  
Keyword(s):  
Red Squirrel ◽  
Sciurus Vulgaris

scholarly journals Classification of trees and tree species in Obrenovac “Mali park” by the elements of growth, vitality and ornamentalness

2010 ◽  
Vol 62 (4) ◽  
pp. 1119-1124 ◽  
Author(s):  
N. Stavretovic ◽  
M. Vuckovic ◽  
B. Stajic
Keyword(s):  
Tree Species ◽  
Juglans Regia ◽  
Platanus Acerifolia ◽  
Homogeneous Groups ◽  
Tree Vitality ◽  
Direct Measurements ◽  
Betula Verrucosa ◽  
The Town ◽  
Celtis Australis

The study was performed in Mali Park, in the town of Obrenovac. Our findings are based on the data obtained after direct measurements of elements of growth and the derived indicators of tree vitality and ornamentalness. Cluster analysis was applied to determine the relatively homogeneous groups of tree species. The results show that the group with the best functional characteristics includes Platanus acerifolia, Tilia grandifolia and Fraxinus ornus, and the group of species with inferior characteristics includes Betula verrucosa, Juglans regia, Celtis australis, Acer platanoides, Cedrus atlantica and Acer negundo.

scholarly journals Particles Matters Accumulation and Anatomical Leaf Properties of Three Tree Species Growing in the Industrial Area in Jeddah, Saudi Arabia

2015 ◽  
Vol 26 (2) ◽  
pp. 23-32
Author(s):  
Al-Toukhy s Al-Toukhy s
Keyword(s):  
Saudi Arabia ◽  
Tree Species ◽  
Coal Ash ◽  
Industrial Area ◽  
Fuel Oil ◽  
Characteristic Matrix ◽  
Lawsonia Inermis ◽  
Cell Region ◽  
Leaf Properties ◽  
And Control

Particles matters accumulation and anatomical leaf properties of Camphor (Cinnamomum camphora), Henna (Lawsonia inermis), and Bougainvillea (Bougainvillea spectabilis) trees growing in the industrial zone in Jeddah - Saudi Arabia and Hada Al-Shame area (control) was done. The leaf properties of all tree species growing in the industrial and control showed that each stoma had a raised edge over the guard cell region. The guard cells appeared more shrunken on the polluted leaves as compared with unpolluted leave. The results indicated that the most deposition particles on leaf surfaces of all tree species were: soot (C) and soil dust with characteristic matrix elements (Si, Al, Mg, Ca, K); fuel oil particles rich in Al, Si, Ca, and Pb; coal ash particles containing C, Al, Si, K, Ca, S; and Pb. As a result, leaves of those plant species may be used as bio-indicators for the assessment of particular matters in the industrial areas.

Natural Infection of a European Red Squirrel (Sciurus vulgaris) with Francisella tularensis subsp. Holarctica

2021 ◽  
Vol 57 (4) ◽  
Author(s):  
Simone R. R. Pisano ◽  
Sonja Kittl ◽  
Ulrike Eulenberger ◽  
Joerg Jores ◽  
Francesco C. Origgi
Keyword(s):  
Francisella Tularensis ◽  
Natural Infection ◽  
Red Squirrel ◽  
Sciurus Vulgaris ◽  
Tularensis Subsp

A novel dicistrovirus in a captive red squirrel (Sciurus vulgaris)

2021 ◽  
Vol 102 (3) ◽  
Author(s):  
Akbar Dastjerdi ◽  
David J. Everest ◽  
Hannah Davies ◽  
Daniela Denk ◽  
Roland Zell
Keyword(s):  
Genome Organization ◽  
New Genus ◽  
Mammalian Species ◽  
Particle Morphology ◽  
Intestinal Content ◽  
Red Squirrel ◽  
Sciurus Vulgaris ◽  
Red Squirrels ◽  
The Family ◽  
Generation Sequencing

Dicistroviruses are single-stranded RNA viruses in the family Dicistroviridae. The viruses have mainly been detected in arthropods and are the cause of several devastating diseases in many of these species such as honeybees. Increasingly, dicistroviruses have also been detected in both mammalian and avian species in faeces, blood and liver, but with unconfirmed pathology. Here, we report a novel dicistrovirus detected in the intestinal content of a captive red squirrel with enteritis along with the disease history, pathology and genomic characterisation of the virus. Virus particle morphology resembled those of picornaviruses with a diameter of 28–32 nm but failed to be detected using a mammalian/avian pan viral microarray. Next-generation sequencing confirmed a dicistrovirus having a typical dicistrovirus genome organization, but with the polyprotein 1 being shorter by about 100 amino acids, compared to that of other dicistroviruses. Phylogenetic analysis of ORF1 and ORF2 sequences clustered the virus with two yet unassigned dicistroviruses detected in Gorilla gorilla and a freshwater arthropod and likely to be designated to a new genus. Our data further highlights the ever-growing diversity of dicistroviruses, but the clinical significance of the virus in mammalian species and particularly red squirrels has yet to be established.

scholarly journals Assessment of land suitability for Norway maple and black locust plantations in the northeast of Iran

2018 ◽  
Vol 64 (No. 3) ◽  
pp. 129-138
Author(s):  
Bagherzadeh Ali
Keyword(s):  
Tree Species ◽  
Black Locust ◽  
Land Suitability ◽  
Semiarid Region ◽  
Parametric Approach ◽  
Analytic Hierarchy ◽  
Suitability Evaluation ◽  
Land Suitability Evaluation ◽  
The North ◽  
Norway Maple

In the present study the qualitative land suitability evaluation by parametric and analytic hierarchy process (AHP) approaches was investigated for two tree species including Norway maple and black locust in the Toroq watershed, a semiarid region, in the northeast of Iran. The values of land suitability indices by the parametric approach for Norway maple and black locust plantations ranged from 22.46 to 67.50 and 23.23 to 75.11 respectively, while by the AHP approach they varied between 35.91 and 84.58 for Norway maple and from 32.87 to 94.31 for black locust plantations. The suitability classes for both tree species by the parametric approach were classified into moderately suitable in the eastern part of the basin, and not suitable in the middle and western parts of the study area. According to the AHP approach the suitability classes varied from highly suitable in some parts in the east to moderately suitable in the middle, east and some parts in the west and not suitable in some parts in the north and southwest of the basin.

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