scholarly journals Species diversity of sandflies (Diptera: Psychodidae) during different seasons and in different environments in the district of Taquaruçú, state of Tocantins, Brazil

2012 ◽  
Vol 107 (7) ◽  
pp. 955-959 ◽  
Author(s):  
Tâmara Oliveira Machado ◽  
Marcos Antônio Lima Bragança ◽  
Muzenilha Lima Carvalho ◽  
José Dilermando Andrade Filho
Keyword(s):  
Species Diversity ◽  
Different Seasons

scholarly journals Temporal and Spatial Dynamics of Dark Septate Endophytes in the Roots of Lycium ruthenicum in the Desert Region of Northwest China

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 648
Author(s):  
Li Han ◽  
Jingxin Shi ◽  
Chao He ◽  
Xueli He
Keyword(s):  
Species Diversity ◽  
Spatial Dynamics ◽  
Northwest China ◽  
Dark Septate Endophytes ◽  
Desert Ecosystems ◽  
Lycium Ruthenicum ◽  
Different Seasons ◽  
Application Potential ◽  
First Time ◽  
Hydrolyzable Nitrogen

With the intensification of desertification in northwest China, drought has become a serious environmental problem restricting plant growth and ecological restoration. Recently, dark septate endophytes (DSEs) have attracted more attention because of their ability to improve plants’ resistance to drought. Here, we investigated DSE colonization and species diversity in roots of Lycium ruthenicum collected from Anxi and Minqin, in northwest China, during July, September, and December 2019. This study aimed to evaluate the influence of seasonality and sampling sites on DSEs. In different seasons, DSE colonization varied with the phenology of L. ruthenicum. At different sites, DSE colonization significantly differed. Four isolates were reported in desert ecosystems for the first time. The results showed microsclerotial colonization was directly affected by changing seasons, while hyphal colonization and species diversity were directly affected by sampling sites. The soil organic carbon, pH, alkaline phosphatase, and alkali-hydrolyzable nitrogen were the main predictors of DSE colonization and species diversity. We conclude that DSE colonization and diversity showed significant spatial–temporal heterogeneity and were closely related to soil factors. This research provides a basis for the further understanding of the ecological functions of DSEs and their application potential for vegetative restoration and agricultural cultivation in drylands.

Species diversity and biomass of macroalgae in different seasons in the northern part of the Persian Gulf

2017 ◽  
Vol 15 ◽  
pp. 26-30 ◽  
Author(s):  
Nassir Niamaimandi ◽  
Zahra Bahmyari ◽  
Nematalah Sheykhsagha ◽  
Esmaeel Kouhgardi ◽  
Reza Ghorbani Vaghei
Keyword(s):  
Species Diversity ◽  
Persian Gulf ◽  
Different Seasons ◽  
The Persian Gulf

scholarly journals Species Diversity and Decorative Features of Plants Used in the Landscaping of Hanoi

2021 ◽  
pp. 65-75
Author(s):  
Thi Yen Nguyen ◽  
◽  
Van Ha Dang ◽  
Tatyana A. Parinova ◽  
Keyword(s):  
Species Diversity ◽  
Urban Landscape ◽  
Evergreen Species ◽  
Main Species ◽  
Palm Trees ◽  
Urban Gardening ◽  
Khaya Senegalensis ◽  
Different Seasons ◽  
Hopea Odorata ◽  
The City

The article presents the results of studies on species diversity and decorative features of plantations in Hanoi. The relevance of this research is justified by the failure to meet the standards of landscaping in the city in accordance with global recommendations and standards. The dendroflora of central Hanoi has 304 species (including varieties and forms) belonging to 253 genera and 104 families. The leading families are Fabaceae, Arecaceae, Asteraceae, Apocynaceae, Bignoniaceae, Meliaceae, Verbenaceae, Myrtaceae, Moraceae, Caesalpiniaceae, Rosaceae, and Magnoliaceae. The Fabaceae family predominates by the the number of genera and species; and is followed by the Moraceae family. The greatest species diversity is observed among trees (151 species – 49.67 % of the total number). The most commonly used species in the urban gardening are Peltophorum pterocarpum, Delonix regia, Khaya senegalensis, Chukrasia tabularis, Ceiba pentandra, Pterocarpus macrocarpus, Hopea odorata, Dracontomelon mangiferum, Alstonia scholaris, Lagerstroemia speciosa, and Terminalia mantaly. Evergreen species predominate among plantations of Hanoi; while deciduous (including shrubs and trees) have a smaller proportion. Of 151 species of trees, 70 are classified as decorative. Shrubs and herbs are inferior to trees by the number of species (58 species each – 19.08 %). Palm trees are the least numerous – 11 species (3.62 %). The decorative features of the main species have been determined. A list of trees with 3 or more decorative features, shrubs and herbs with 2 or more decorative features was compiled. In order to create a unique urban landscape in different seasons of the year it is recommended to use the species included in this list. For citation: Nguyen Thi Yen, Dang Van Ha, Parinova T.A. Species Diversity and Decorative Features of Plants Used in Landscaping of Hanoi. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 5, pp. 65–75. DOI: 10.37482/0536-1036-2021-5-65-75

scholarly journals Soil spider (Arachnida, Aranei) fauna of Samara parks zones

2016 ◽  
Vol 5 (2) ◽  
pp. 8-10
Author(s):  
Evgeny Alexandrovich Belosludtsev
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Jaccard Index ◽  
Species Range ◽  
Original Material ◽  
Gradual Decline ◽  
Spider Species ◽  
Quantitative Ratio ◽  
Number Of Species ◽  
Different Seasons

The aim of the work is to identify the species composition of aranei fauna and quantitative ratio of soil spiders in the parks of Samara in different seasons. The paper contains the results of the study of spider fauna in six parks of Samara. The author has used the original material collected in Samara from May to October 2002-2006. The author has identified 3081 individuals from 17 families of spiders. 77 spider species from 54 genera and 17 family have been found, it is 80% of the list of species of ground tier Samara spiders. Species range from 19 to 33 in each park. In the studied parks Linyphiidae family, Lycosidae and Gnaphosidae dominate in the number of species. The analysis of the number of spider species in different seasons of the year showed a gradual decline of species diversity from spring to autumn. According to Jaccard index, each of the studied fauna of spiders has a distinct originality. Only 4 species are present in all parks ( Diplostyla concolor (Wider, 1834), Pardosa lugubris (Walckenaer, 1802), Trochosa ruricola (De Geer, 1778) и Tr. terricola (Thorell, 1856).

Diatoms in the Early Valdai (Weichselian) sediments in Lake Ladoga basin

2019 ◽  
pp. 225-228
Author(s):  
Anna V. Ludikova
Keyword(s):  
Species Diversity ◽  
High Energy ◽  
Lake Ladoga ◽  
Diatom Assemblages ◽  
Marine Diatoms ◽  
Selective Preservation

The pioneer diatom study of the Early Weichselian (Valdai) sediments in Lake Ladoga basin was performed. The specifics of the diatom assemblages (co-occurrence of ecologically incompatible taxa, poor species diversity, low diatom concentration and selective preservation) suggest that during the Early Weichselian time intense erosion of previously deposited marine Eemian (Mikulino) sediments prevailed, which resulted in re-deposition of marine diatoms. The sedimentation took place in high-energy environments unfavorable for diatom accumulation and preservation.

Sign in / Sign up

Export Citation Format

Share Document