scholarly journals The study of the zoobenthos of the Tsraudon river basin (the Terek river basin)

2020 ◽  
Vol 169 ◽  
pp. 03006
Author(s):  
Ia E. Dzhioeva ◽  
Susanna K. Cherchesova ◽  
Oleg A. Navatorov ◽  
Sofia F. Lamarton
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
River Basin ◽  
Mountain Forest ◽  
Forest Zone ◽  
Distribution Boundary ◽  
The Family ◽  
Species Composition And Distribution

The paper presents data on the species composition and distribution of zoobenthos in the Tsraudon river basin, obtained during the 2017-2019 research. In total, 4 classes of invertebrates (Gastropoda, Crustacea, Hydracarina, Insecta) are found in the benthic structure. The class Insecta has the greatest species diversity. All types of insects in our collections are represented by lithophilic, oligosaprobic fauna. Significant differences in the composition of the fauna of the Tsraudon river creeks and tributary streams have been identified. 7 families of the order Trichoptera are registered in streams, and 4 families in the river. It is established that the streamlets of the family Hydroptilidae do not occur in streams, the distribution boundary of the streamlets of Hydropsyche angustipennis (Hydropsychidae) is concentrated in the mountain-forest zone. The hydrological features of the studied watercourses are also revealed.

scholarly journals Staphylinids (Coleoptera, Staphylinidae) of Ukrainian metropolises

2020 ◽  
Vol 28 (1) ◽  
pp. 41-47
Author(s):  
A. V. Puchkov ◽  
V. V. Brygadyrenko ◽  
L. I. Faly ◽  
N. A. Komaromi
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Urban Environment ◽  
Common Species ◽  
Diverse Group ◽  
Insect Communities ◽  
Large Cities ◽  
The Family ◽  
Carnivorous Species ◽  
Original Species

During hundreds of years, in large cities man has been forming a specific urban environment with original species composition of insect communities, including the most diverse group of predatory beetles – Staphylinidae family. Kyiv, Kharkiv, Dnipro are the three most populated cities of Ukraine. In the urban cenoses of these cities, over 140 species from 66 genera of Staphylinidae have been recorded. The total of 69 species (43 genera) were recorded in Kyiv, 67 (39 genera) in Dnipro and 66 (37 genera) in Kharkiv. Among them, , eight species in the catalogue of Palearctic staphylinds had not been previously recorded for Ukraine: Arpedium quadrum Grav., Atheta laticeps Thomson, Medon apicalis Kraatz, Ocalea rivularis Müll., Philonthus salinus Kiesenwetter, Quedius invreae Gridelli, Tasgius pedator Grav. and Xantholinus gallicus Coiffait. By number, common species accounted for 29 in Dnipro, 21 in Kyiv and 19 in Kharkiv. In all the metropolises, two species (Staphylinus caesareus Cederhjelm and Drusilla canaliculata (F.)) were identified as eudominants. Dominants and subdominants comprised 18–25 species. Almost two thirds of the fauna of staphylinids of the cities was classified as rare species. The lowest faunistic similarity was seen between the staphylinids of the urban cenoses of Dnipro and those in Kyiv and Kharkiv (15.3% and 17.5%), similarity was higher for Staphylinidae of Kyiv and Kharkiv (36.0%). Similarity by common species of staphylinids for Kyiv and Kharkiv equaled 73.9%, 28.2% for Dnipro and Kyiv and 37.1% for Dnipro and Kharkiv. The article offers a review of species diversity, number and ecological structure (biotopic confinedness, hygrothermal preference) of typical species of staphylinids in different urban cenoses of Kharkiv. Differences in qualitative-quantitative and ecological structures of staphylinids are related to the diversity of the conditions in a particular urban cenoses. The commonest representatives of the family in the metropolises were polytopic mesophilous carnivorous species.

scholarly journals Genetic Diversity of Freshwater Leeches in Lake Gusinoe (Eastern Siberia, Russia)

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Irina A. Kaygorodova ◽  
Nadezhda Mandzyak ◽  
Ekaterina Petryaeva ◽  
Nikolay M. Pronin
Keyword(s):  
Genetic Diversity ◽  
Species Diversity ◽  
Molecular Marker ◽  
Species Composition ◽  
Morphological Identification ◽  
Adjacent Area ◽  
Eastern Siberia ◽  
Species List ◽  
The Family ◽  
Unidentified Species

The study of leeches from Lake Gusinoe and its adjacent area offered us the possibility to determine species diversity. As a result, an updated species list of the Gusinoe Hirudinea fauna (Annelida, Clitellata) has been compiled. There are two orders and three families of leeches in the Gusinoe area: order Rhynchobdellida (families Glossiphoniidae and Piscicolidae) and order Arhynchobdellida (family Erpobdellidae). In total, 6 leech species belonging to 6 genera have been identified. Of these, 3 taxa belonging to the family Glossiphoniidae (Alboglossiphonia heteroclita f. papillosa, Hemiclepsis marginata, andHelobdella stagnalis) and representatives of 3 unidentified species (Glossiphoniasp.,Piscicolasp., andErpobdellasp.) have been recorded. The checklist gives a contemporary overview of the species composition of leeches and information on their hosts or substrates. The validity of morphological identification of each taxon has been verified by phylogenetic approach with a molecular marker adopted for a DNA barcoding of most invertebrates.

The aquatic oligochaetes (Annelida: Clitellata) of eight lakes in the Aşği Firat River Basin (Lower Euphrates, Turkey)

Biologia ◽  
2016 ◽  
Vol 71 (1) ◽  
Author(s):  
Seval Aras ◽  
Özlem Fındik
Keyword(s):  
River Basin ◽  
Principal Component ◽  
Point Sources ◽  
Eastern Anatolia ◽  
Chemical Parameters ◽  
Aquatic Oligochaetes ◽  
Physico Chemical ◽  
The Family ◽  
Species Composition And Distribution

AbstractThe Aşağ Fırat River is located in the south-eastern Anatolia, Turkey. The water quality of the Aşağ Fırat River basin has been degrading for some time, primarily as the result of pollutants associated with the discharges from numerous domestic and agricultural point sources. Aquatic macroinvertebrate samples were collected from eight lakes conducted by using both hand-nets and an Ekman-Birge grab sampler during the summer and autumn of 2014, focusing on the species composition and distribution of aquatic oligochaetes in eight lakes of the Aşağ Fırat River basin, and their relationships with physico-chemical parameters measured in those lakes using Principal Component Analysis. Results of analyses of all identified benthic macroinvertebrates clearly indicate the percent dominance of oligochaetes in benthic samples in the eight dam lakes that were sampled: Hacıhıdır lake (62.9%); Atatürk lake (49.6%); Üçöz lake (28.9%); Dumluca lake (22.01%); Seve lake (13.9%); Çat lake (8.5%); Karakaya lake (7.8%) and Birecik lake (5%). During this study, 1044 oligochaete specimens representing 10 species of two subfamilies within the family Naididae were identified. The most abundant taxa were

scholarly journals PRELIMINARY STUDY OF SPECIES COMPOSITION AND DISTRIBUTION OF ECONOMICALLY VALUABLE PRAWNS IN THE NORTHEASTERN COASTAL WATERS OF VIETNAM

2015 ◽  
Vol 37 (2) ◽  
pp. 105-108
Author(s):  
Do Dinh Thinh
Keyword(s):  
Species Composition ◽  
Environmental Pollution ◽  
Coastal Waters ◽  
Economic Importance ◽  
The Family ◽  
Preliminary Study ◽  
Species Composition And Distribution ◽  
Marine Environmental ◽  
Marine Environmental Pollution

The northeastern coastal waters of Vietnam contains diverse and abundant prawns with economic importance. In recent years, overexploitation and marine environmental pollution have led to the decrease of prawns. The purpose of this study is to identify the current diversity and distribution of prawns in this region. Prawns were sampled by a trawl net at four sites in 2011. A total of 21 species of three families of the superfamily Penaeoidea was distributed in this area. The family Penaeidae is the most diverse with 19 species, while each of family Sicyoniidae and Solenoceridae has only one species.

scholarly journals Tree Species Composition and Distribution Pattern in a Myristica Swamp of Northern Kerala, India

2016 ◽  
Vol 11 (3) ◽  
pp. 743-750
Author(s):  
K. A Sreejith ◽  
U. M Chandrashekara ◽  
T. K Nirmesh ◽  
V. B Sreekumar
Keyword(s):  
Species Composition ◽  
Distribution Pattern ◽  
Tree Species ◽  
Dominant Species ◽  
Basal Area ◽  
Essential Elements ◽  
Tree Species Composition ◽  
The Family ◽  
Species Composition And Distribution ◽  
Species Specific

Knema Phytosociological studies have been carried out in a Myristica swamp in Northern Kerala to reveal the composition and distribution pattern of different tree species. On the basis of IVI, the family Myristicaceae was dominant and the association is attenuata - Myristica malabarica -Holigarna arnottiana type. The species like Gymnacranthera canarica and Myristica fatua var. magnifica, which are believed to be the essential elements of Myristica swamps, are totally absent here. A total 403 individuals (gbh > 10.1 cm) were recorded with a basal area of 34.25 m2 ha-1 in 0.5 ha. area. Total number of species recorded was 28, which represent 21families in which Myristicaceae represents 48.18% of total IVI. Among two dominant species, Myristica malabarica prefer swampy area hence their number of individual shows decreasing trend when we move from the swamp while the second dominant species Knema attenuata showing a reverse trend and was completely absent in the first five quadrats where soil water content is too high. Species specific eco-physiological studies are required to understand the reasons for change in the distribution pattern of these dominant species.

scholarly journals Factors Affecting Lichen Diversity in Manor Parks of Pskov Region (Northwestern Russia)

2021 ◽  
Vol 35 ◽  
pp. 19-33
Author(s):  
N. B. Istomina ◽  
◽  
O. V. Likhacheva ◽  
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Lichen Species ◽  
Species Number ◽  
Dispersion Pattern ◽  
Natural Forests ◽  
Forest Zone ◽  
Factors Affecting ◽  
Lichen Diversity ◽  
The Impact

The article describes the results of studies of the factors affecting lichen diversity in 46 manor parks of the region of Pskov. The investigated parks were founded in the end of XVIII – beginning of XX centuries. Twenty of them are fragmented and currently occupy less than 5 ha, the area of nine parks varies from 5 to 10 ha, those preserved within historical boundaries cover from 11 to 100 ha. Manor parks are situated both within the settlements’ boundaries (31 parks) and outside the settlements either bordering forest (12) or agricultural lands (3). Ten of the former border the forests. During the study 166 lichen species were identified. Statistical methods were performed to investigate the factors affecting lichen diversity in manor parks. Linear regression analysis was used to examine the dependence of the lichens species number on the park age/date of park creation (dispersion pattern), area of the parks (box plot), substrata diversity (dispersion pattern), and the dependence of the epiphytic lichens species number on tree and shrub species diversity (dispersion pattern). With the biserial correlation coefficient the impact of the settlement and the presence of the surrounding natural forests was calculated. Correlation analysis was performed to demonstrate the colligation between lichen species composition of the parks located in different subzones of forest zone in the region of Pskov. Our findings show that the number of lichen species depends on the park area (p = 0,0315), the variety of substrate types (p ˂ 0,001), and the variety of trees and bushes planted (p ˂ 0,001). The date of park creation and the presence of the surrounding natural forests do not influence the species diversity of lichens. We reveal that the location of the parks in a specific subzone of forest zone (southern taiga and mixed coniferous-broad-leaved forest) has no significant effect on the lichen species composition. The species richness of lichens tends to decrease in parks located within the settlements. The data obtained indicate not only the similarity of the species composition of lichens in the studied communities, but also the long-term development of lichen park communities in comparable climatic and landscape conditions.

Terrestrial lithophilic algae in a granite canyon of the Teteriv River (Ukraine)

Biologia ◽  
2008 ◽  
Vol 63 (6) ◽  
Author(s):  
Tatiana Mikhailyuk
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Green Algae ◽  
New Records ◽  
Plant Cover ◽  
Steppe Zone ◽  
Forest Zone ◽  
Granite Outcrops ◽  
Interesting Species ◽  
High Diversity

AbstractSixty-eight species of algae were found on granite outcrops of a canyon of the Teteriv River in the forest zone of Ukraine (Cyanoprokaryota 1 species, Chlorophyta 49, Streptophyta 11, Xanthophyta 2, Eustigmatophyta 1, Bacillariophyta 4). Two of these are new records for the flora of Ukraine [Spirotaenia bryophila (Brébisson) Lütkemüller and Coelastrella multistriata (Trenkwalder) Kalina et Punčochářová] and several are rare and interesting species [Stichococcus mirabilis Lagerheim, Dictyochloropsis splendida Geitler, D. reticulata (Tschermak-Woess) Tschermak-Woess, Mesotaenium macrococcum (Kützing) Roy et Bisset, M. chlamydosporum De Bary, Klebsormidium cf. bilatum Lokhorst]. The species composition of algae of this granite canyon was characterized by the following specific features: a high diversity of green algae (mainly trebouxiophycean and streptophycean algae); a considerable species diversity and abundance of green conjugating algae among the mentioned streptophycean algae; a low species diversity of cyanoprokaryotes, as well as the presence of the genera Mesotaenium Nägeli and Trentepohlia Martius in the dominating complex. Two slopes of the canyon with different expositions and plant cover were characterized by different proportions of epilithic and chasmoendolithic groups of algae as well as different dominating complexes. The species composition of algae from granite canyon of forest zone was the most similar to the more humid and shaded habitats of a granite canyon of steppe zone of Ukraine studied previously.

scholarly journals New Records of Lake Baikal Leech Fauna: Species Diversity and Spatial Distribution in Chivyrkuy Gulf

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Irina A. Kaygorodova ◽  
Nikolay M. Pronin
Keyword(s):  
Spatial Distribution ◽  
Species Diversity ◽  
Species Composition ◽  
Lake Baikal ◽  
New Records ◽  
Biological Productivity ◽  
The Family ◽  
Unidentified Species ◽  
Diverse Community ◽  
First Time

The study of several Lake Baikal leech collections offered us the possibility to determine species diversity in the Chivyrkuy Gulf, the biggest one in the lake. As a result, the first information on the Chivyrkuy Hirudinea fauna (Annelida, Clitellata) has been revealed. There are two orders and four families of leeches in the Chivyrkuy Gulf: order Rhynchobdellida (families Glossiphoniidae and Piscicolidae) and order Arhynchobdellida (families Erpobdellidae and Haemopidae). In total, 22 leech species and 2 subspecies belonging to 11 genera were identified. Of these, 4 taxa belong to the family Glossiphoniidae (G. concolor,A. hyalina,A. heteroclitaf.papillosa, andA. heteroclitaf.striata) recorded in Baikal for the first time. Representatives of 8 unidentified species (Glossophiniasp.,Baicaloclepsissp.,Baicalobdellasp.,Piscicolasp. 1,Piscicolasp. 2,Erpobdellasp. 1,Erpobdellasp. 2, andErpobdellasp. 3) have been also recorded. The checklist gives a contemporary overview of the species composition of leech parasites, their hosts, and distribution within the Chivyrkuy Gulf. The analysis of spatial distribution has shown that the leech species diversity is correlated with the biological productivity of the bay. The most diverse community of leech species is detected in the eutrophic zone of the lake.

scholarly journals Biodiversity of free-living ciliates of the Kura River basin (within Azerbaijan)

2020 ◽  
pp. 97-113
Author(s):  
Ilham Kh. Alekperov ◽  
Elyana N. Tahirova
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
River Basin ◽  
Species Occurrence ◽  
Free Living ◽  
Time Part ◽  
Sample Points ◽  
Total Species ◽  
Group Species ◽  
Freshwater Ciliates

As a result of long therm free-living ciliates investigation of the Kura River basin, in all 308 species have been noted. The article provides information on the ciliates species diversity of 8 sample points, across the Kura River within Azerbaijan – from Georgian state border to the delta. The freshwater ciliates species diversity varies considerably depending on location and environment sample points. The greatest diversity of freshwater ciliates noted in Mingechevir and Varvara reservoirs (128 and 140 species respectively), which in our opinion, is related with a variety of biotopes in these reservoirs and an abundance of food organisms. The analysis on the occurrence of ciliates showed that the group of dominants (noted in more than 80 % of all samples) includes 10.71 % of the total species diversity, and the group of regular ones (occurrence less than 80, but more than 50 %) 13.60 % of the entire species composition, 71.47 % belong to the largest group of irregular ones (occurrence from 30 to 50 % in samples), and 4.22 % of the total species diversity to the group of random species (occurrence less than 30 % of all samples). It has been established that the largest group of irregular species is consist ciliates, confined to a certain time of the year – mainly in spring and fall. At the same time, part of this group species appeared in the communities only in the summer.

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