scholarly journals Generative propagation of Robinia x ambigua POIR. – Pink locust

2010 ◽  
Vol 16 (5) ◽  
Author(s):  
K. Rédei ◽  
Zs. Keserű ◽  
Z. Osváth-Bujtás ◽  
M. E. Malvolti
Keyword(s):  
Small Group ◽  
The South ◽  
Important Species ◽  
South Eastern ◽  
Trees And Shrubs

The genus Robinia is a small group of about 10 species of trees and shrubs indigenous only to NorthAmerica. Two species are endemic to Mexico, one being confined to south-western part of the country, while the rest are endemic to the south-eastern part of USA. Of the most important species and varieties of genus Robinia, Robinia x ambigua Poir.(Robinia viscosa x R. pseudo-acacia)-pink locust can be considered as the most significant one for bee-forage and decorative planting. In this paper a generative propagation method is presented for pink locust.

Diets and trophic guilds of demersal fishes of the south-eastern Australian shelf

2001 ◽  
Vol 52 (4) ◽  
pp. 537 ◽  
Author(s):  
C. Bulman ◽  
F. Althaus ◽  
X. He ◽  
N. J. Bax ◽  
A. Williams
Keyword(s):  
Fish Species ◽  
Abundant Species ◽  
Trophic Guilds ◽  
The South ◽  
Important Species ◽  
Trawl Fishery ◽  
South Eastern ◽  
Total Fish ◽  
Wet Weight ◽  
Commercially Important

A total of 8200 stomach samples was collected from 102 fish species caught by trawl or gillnet during research surveys on the south-eastern Australian shelf from 1993 to 1996. Diet compositions were analysed based on percentages of wet weight of prey. Of the total fish examined, 70 species had sufficient stomach samples (i.e. >10) for further analysis. Ten trophic guilds were identified from cluster analysis. Benthic prey dominated the diets. However, analysis on a subset of 28 abundant species that were commercially and ecologically important, showed that pelagic prey was dominant, particularly for 12 quota species. This suggests that pelagic production contributes significantly to the trawl fishery production. Further analysis on the diets of these 28 species found that although fish was more important than invertebrate prey, there was no evidence of significant predation on commercially important species (quota species)by other fish species. A food web diagram was constructed, mostly based on the diet compositions, guild structure and relative abundance of commercially and ecologically important fish species, to show major trophic interactions of the shelf ecosystem.

scholarly journals ORNAMENTAL ARBOREAL PLANTS IN SETTLEMENTS OF THE SOUTH-EASTERN CRIMEA (ON THE EXAMPLE OF MALORECHENSKOYE AND RYBACHYE SETTLEMENTS)

Ekosistemy ◽  
2021 ◽  
pp. 58-73
Author(s):  
I. L. Potapenko ◽  
N. I. Klymenko ◽  
V. Yu. Letukhova
Keyword(s):  
Species Diversity ◽  
Large Scale ◽  
Good Condition ◽  
The South ◽  
High Concentration ◽  
Coniferous Trees ◽  
South Eastern ◽  
Eastern Crimea ◽  
Deciduous Shrubs ◽  
Trees And Shrubs

The results of research of green areas in localities Malorechenskoye and Rybachye (South-Eastern Crimea) are presented. Large-scale landscaping of the studied territory was carried out in the 60-80-ies of the XX century. Modern structure of green spaces is typical for coastal settlements – basically, these are parks of recreational complexes, with high concentration of diversity of trees and shrubs species. A historical park (the oldest one) in the South-Eastern Crimea (late 50s – early 60s of the XIXth century) is also located in Malorechenskoye. The researches made taxonomic, botanical-geographical and biomorphological analysis of dendroflora. The frequency of occurrence of species, the condition of plants, as well as the degree of their drought and frost were assessed. The studied dendroflora includes 106 species belonging to 75 genera from 43 families. The species diversity of trees and shrubs in Rybachye is higher than in Malorechenskoye (89 and 67, respectively). At the same time, 13 species are widely distributed in both settlements, the most numerous of which is Cupressus sempervirens. It was revealed that species of the Mediterranean floristic region predominate (31.1 %), and representatives of native Crimean flora take a significant place (34.9 %). The leading position in the biomorphological structure of the dendroflora belongs to deciduous trees (25.5 %), followed by deciduous and evergreen deciduous shrubs (19.8 % each), and coniferous trees (17.0 %). The species diversity of deciduous shrubs and coniferous trees is significantly higher in Rybachye than in Malorechenskoye. Most plants are adapted to local climatic conditions: 57.5 % of species are not damaged by drought, the rest suffer from it in different degrees; 78.3% of species are frost-resistant, others are periodically damaged by low temperatures and need better protected from frost and cold winds planting sites. The absolute majority of species (95.3 %) are in good condition. Plants Aesculus hippocastanum, Buxus balearica, B. sempervirens, Euonimus japonica are more or less affected by pests and diseases. Special attention should be paid to the preserve the historical park in Malorechenskoye and to give it a protected status.

Polychaete assemblages in the south-eastern Bering Sea: linkage with groundfish distribution and diet

2010 ◽  
Vol 90 (5) ◽  
pp. 903-917 ◽  
Author(s):  
Cynthia Yeung ◽  
Mei-Sun Yang ◽  
Robert A. McConnaughey
Keyword(s):  
Correspondence Analysis ◽  
Bering Sea ◽  
Environmental Variables ◽  
Spatial Association ◽  
Benthic Habitat ◽  
The South ◽  
Important Species ◽  
South Eastern ◽  
Eastern Bering Sea ◽  
Sediment Types

Ecological information on the polychaete community may improve habitat descriptions and distribution models of commercially important species that are polychaete-feeders. This study reports on the first new observations in nearly three decades on the polychaete assemblages in the south-eastern Bering Sea. This information was used in an exploratory assessment of the association between polychaete assemblages and environmental variables that define the benthic habitat. The spatial association between polychaete assemblages and groundfish predators was also explored for insight into whether prey assemblages influence predator distribution. Canonical correspondence analysis indicates that surficial sediment is the most important factor in organizing polychaete assemblages, over other common environmental variables such as depth and temperature. Co-correspondence analysis of the distributions of groundfish species and polychaete families does not indicate that predators are associated with specific prey families. Families that are most frequent in stomach contents of some of the fish in the analysis, mainly Maldanidae and Nephtyidae, are widely distributed across the Bering Sea shelf in diverse sediment types, as are the principal polychaete-feeders in the eastern Bering Sea such as Alaska plaice (Pleuronectes quadrituberculatus) and northern rock sole (Lepidopsetta polyxystra).

scholarly journals Summer‐flowering trees and shrubs in landscaping for the south‐eastern coast of the Crimea

2021 ◽  
Vol 16 (1) ◽  
pp. 6-16
Author(s):  
N. I. Klimenko ◽  
I. L. Potapenko ◽  
О. Е. Klimenko
Keyword(s):  
Species Composition ◽  
Early Summer ◽  
Green Spaces ◽  
Eastern Coast ◽  
The South ◽  
Albizia Julibrissin ◽  
South Eastern ◽  
The Crimea ◽  
Ornamental Trees ◽  
Trees And Shrubs

Aim.  To  study  the  species  composition,  form  diversity,  bioecological  features of summer‐ flowering trees and shrubs in green spaces of the  south‐eastern coast of the Crimea and suggest ways to expand the range.  Materials and Methods. The green spaces of Feodosia, Sudak and the  localities of Semidvorye, Solnechnogorskoye, Malorechenskoye, Rybachye,  Morskoye,  Novy  Svet,  Solnechnaya  Dolina,  Shchebetovka,  Kurortnoye,  Koktebel and Primorskiy were investigated. Bioecological and phenological  studies of ornamental trees and shrubs were undertaken according to  generally accepted methods.  Results. The species composition and shape diversity of summer‐flowering  trees and shrubs in green plantings of Crimea’s south‐eastern coast were  identified. It was found that summer‐ flowering plants make up almost half  of the species composition (48.6%) used in landscaping. However, only 23  species are widespread throughout the region, such as Ailanthus altissima  (Mill.) Swingle, Albizia julibrissin Durazz., Buddleja davidii Franch., Campsis  radicans (L.) Seem., Elaeagnus angustifolia L. etc. The greatest number of  species and forms of arboreal plants bloom in early summer, their number  decreasing significantly from the second decade of June.  Conclusion. An assortment is proposed for increasing the number of trees  and shrubs which flower during the summer, taking into account both their  decorative visual appeal and their environmental requirements, especially  drought and frost resistance. Of great interest are species that bloom from  June onwards, especially those which are highly decorative and have a long  flowering period, such as Albizia julibrissin, Buddleja davidi and forms,  Hydrangea arborescens L., Campsis radicans, Kerria japonica f. plena C.K.  Schneid, Robinia viscosа Vent., Vitex angus‐castus L. 

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