scholarly journals Validation of associations, alliances and orders of the Algerian forest and scrub vegetation

2021 ◽  
Vol 42 ◽  
pp. e75352
Author(s):  
Rachid Meddour ◽  
Ladislav Mucina
Keyword(s):  
New Associations

This paper presents description protocols of 13 new associations, 12 alliances, and 1 order of the Algerian forest and forest-associated vegetation of the classes Quercetea ilicis, Junipero-Pinetea sylvestris, Quercetea pubescentis, Alno glutinosae-Populetea albae, Alnetea glutinosae, Franguletea and Nerio-Tamaricetea.

Conservation of meaning as a factor in forgetting new associations.

1969 ◽  
Vol 80 (2, Pt.1) ◽  
pp. 322-325
Author(s):  
Eli Saltz ◽  
Vito Modigliani
Keyword(s):  
New Associations

Swamp plant communities with Salix reptans Rupr. and S. lanata L. in the west of tundra zone of Taymyr Peninsula

2003 ◽  
pp. 28-40 ◽  
Author(s):  
L. L. Zanokha
Keyword(s):  
Plant Communities ◽  
Species Group ◽  
Intermediate Position ◽  
Tundra Zone ◽  
The West ◽  
Diagnostic Species ◽  
New Associations ◽  
Mire Vegetation ◽  
Humidity Gradient ◽  
Ecological Regime

The 2 new associations, Carici stantis—Salicetum reptantis and Salico-Polemonietum acutiflori, are described within the all. Caricionstantis of the class Scheuchzerio-Caricetea fuscae R. Tx. 1937 for the northern belt of the typical tundra subzone of Taymyr. The diagnostic species group of the first syntaxon includes plants typical of sites with excessive watering. The ass. Carici stantis—Salicetum reptantis is restricted to bottoms or lower parts of the watershed and moun­tain terrace slopes. The ecological regime of these sites is subject to slight variations reflected in presence/ absence of certain species. Due to floristic differences, the association is subdivided into several subassociations which form a topographic-ecological series along the humidity gradient: epilobietosum palustris→ptilidietosum ciliaris→typicum→petasitetosum frigidi. The ass. Carici stantis—Salicetum reptantis is referred to the all. Caricionstantis which also includes the associations Meesiotriquetris—Caricetumstantis and Pooarcticae—Dupontietumfisheri (also described from the Ragozinka R. basin); the latter occur in the wet depres­sions between sloping hills and the flowing valleys, respectively. If compared to these two, the ass. Carici stantis—Salicetum reptantis is shown to hold an intermediate position between them. The ass. Salico-Polemonietum acutiflori with the 2 variants, Salix lanata and S. reptans, represents various variants of mire vegetation which have under­gone zoogenic transformation (by lemmings). The stands size 1—1.5 m2 in space. The diagnostic species group comprises plants common of the wet mossy stream banks. The association is referred to the all. Caricion stantis, although many diagnostic species of the alliance are not present in its composition. When the new data are available, the association is probable to be separated into an independent alliance.

Sand vegetation of Verkhnecharskaya depression (Zabaikalsky Krai)

2013 ◽  
pp. 29-37
Author(s):  
N. A. Dulepova ◽  
A. Yu. Korolyuk
Keyword(s):  
Plant Communities ◽  
New Associations

The results of syntaxonomical studies of psammophyte vegetation of the Chara sands (Verkhnecharskaya depression Zabaikalsky Krai) are presented. Plant communities on open sands belong to the class Brometea korotkyi Hilbig et Korolyuk 2000 and to the order Oxytropidetalia lanatae Brzeg et Wika 2001. The new alliance Aconogonion chlorochryseum is established. 4 new associations, 3 new subassociations and 2 communities are characterized.

New associations of the class Molinio-Arrhenatheretea in the in Southern Nechernozemie region of Russia

2014 ◽  
pp. 3-12
Author(s):  
A. D. Bulokhov
Keyword(s):  
Loess Plateau ◽  
Plant Communities ◽  
Mineral Nitrogen ◽  
New Associations ◽  
Medicago Lupulina ◽  
Fallow Lands ◽  
Small Sites ◽  
First Time ◽  
Podzol Soils

3 new associations, distributed in the Southern Nechernozemie of Russia, are described for the first time with use of the Braun-Blanquet approach: Poo angustifoliae–Arrhenatheretum elatioris, Festuco pratensis–Leucanthemetum vulgaris, Trifolio ar­ven­si–Rumicetum thyrsiflori. The synecological amplitudes of humidity, acidity and soil richness by mineral nitrogen of the associations are defined. Communities of ass. Poo angustifoliae–Arrhenatheretum elatioris are distributed on the flat slopes of ravines on the dry, subacidic, grey wood loamy soils moderately rich by mineral nitrogen. Communities of ass. Festuco pratensis–Leucanthemetum vulgaris are distributed on fresh, subacidic, rather poor in mineral nitrogen grey and dark grey wood loamy soils on the fallow lands of various age within landscapes of loess plateau; on sod-podzolic loamy, sandy and subsandy soils within landscapes of fluvioglacial loamy and moraine-outwash plains. They can meet occasionally on grey wood loamy soils. Communities of the Potentilla argentea var. are distributed on grey and dark grey wood loamy soils on the fallow lands within landscapes of loess plateau. Communities of the Medicago lupulina var. are distributed on sod-podzolic loamy, sandy and subsandy subacidic, rather poor in mineral nitrogen soils on the fallow lands of various age. They may occur in the small sites on the continental meadows or along highways. Occasionally these plant communities can be found on grey wood loamy soils. Communities of ass. Trifolio arvensi–Rumicetum thyrsiflori are distributed on raised sites on gentle-wavy outwash or moraine-outwash plains on dry and moderately sour, poor by mineral nitrogen easily sandy and sandy podzol soils. For the estimation of a homotoneity of established syntaxa the index of homotoneity of H.Passarge (1979) is used. The ass. Poo angustifoliae–Arrhenatheretum elatioris is characteristic by the high homogenetic variability. Totally, association’s index of homotoneity is high — 0.52. The low index of a homotoneity is characteristic for аss. Festuco pratensis–Leucanthemetum vulgaris — 0.35, for the Potentilla argentea var. — 0.33 and Medicago lupulina var. — 0.44. Following associations have a low index of the homotoneity: аss. Trifolio arvensi–Rumicetum thyrsiflori — 0.33, as in subass. T.a.–R.th. typicum— 0.33, and in subass. T.a.–R.th. helichrysetosum arenarii — 0.44. Such low indexes of a homotoneity are characteristic for semiruderal and serial commu­nities.

The forest margin vegetation of the South Urals (Bashkortostan Republic)

2009 ◽  
pp. 54-96 ◽  
Author(s):  
S. M. Yamalov ◽  
S. V. Kucherova
Keyword(s):  
Southern Urals ◽  
South Urals ◽  
The South ◽  
The Southern Urals ◽  
New Associations ◽  
Class Distribution ◽  
Forest Margin ◽  
Eastern Border

The syntaxonomy of the Southern Urals’ forest margins in Bashkortostan Republic is presented. Three new associations and four communities are described. The criteria of identifying the forest margins communities to belong to the class Trifolio-Geranietea and the eastern border of the class distribution are discussed.

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