scholarly journals VARIABILITY OF THE COMPOSITION AND RATIO OF VASCULAR PLANT LIFE FORMS IN ECOTONE COMMUNITIES OF THE UPPER BORDER OF WOODY VEGETATION IN THE POLAR URALS

2020 ◽  
Vol 30 (1) ◽  
pp. 5-17
Author(s):  
N.I. Andreyashkina
Keyword(s):  
Vascular Plants ◽  
Vascular Plant ◽  
Floristic Composition ◽  
Life Forms ◽  
Polar Urals ◽  
Plant Life Forms ◽  
Plant Life ◽  
Different Types ◽  
Species Similarity ◽  
The Polar Urals

For phytoindication of ecotopic conditions according to the degree of moisture and heat supply, full floristic composition was used in a number of communities and ecotopes within them. Different hydrothermal regimes of ecotopes underlie the distribution of life forms of vascular plants. The spatial heterogeneity of floristic diversity is largely due to a set of species of grassy life forms. Woody life forms are not numerous, but play a significant role in the structure of the vegetation cover. The species richness of communities naturally decreases during the transition from larch forests and woodlands to mountain tundras with single trees. At the same time, communities are largely similar in species composition, and the set of life forms is preserved, but the composition and ratio of different types of life forms change. The transition from smooth variability in the composition and ratio of life forms to markedly increased variability as a result of natural environmental factors is clearly visible, which is correspondingly reflected in a decrease in indicators of species similarity of communities.

Distribution of plant life forms along an altitudinal gradient in the semi-arid valley of Zapotitlán, Mexico

2000 ◽  
Vol 11 (1) ◽  
pp. 39-42 ◽  
Author(s):  
Numa P. Pavón ◽  
Humberto Hernández-Trejo ◽  
Víctor Rico-Gray
Keyword(s):  
Altitudinal Gradient ◽  
Life Forms ◽  
Plant Life Forms ◽  
Plant Life ◽  
Semi Arid

scholarly journals The role of terrestrial bromeliads in determining the spatial organization of plant life forms in a tropical coastal forest

2017 ◽  
Vol 31 (1) ◽  
pp. 84-92
Author(s):  
Celio M. Lopes ◽  
Flora Misaki ◽  
Karina Santos ◽  
Carlos A. P. Evangelista ◽  
Tatiana T. Carrijo ◽  
...  
Keyword(s):  
Spatial Organization ◽  
Life Forms ◽  
Coastal Forest ◽  
Plant Life Forms ◽  
Plant Life

scholarly journals Relationship between Species Richness, Biomass and Structure of Vegetation and Mycobiota along an Altitudinal Transect in the Polar Urals

2020 ◽  
Vol 6 (4) ◽  
pp. 353
Author(s):  
Anton G. Shiryaev ◽  
Ursula Peintner ◽  
Vladimir V. Elsakov ◽  
Svetlana Yu. Sokovnina ◽  
Denis A. Kosolapov ◽  
...  
Keyword(s):  
Species Richness ◽  
Vascular Plants ◽  
Fungal Species ◽  
River Valley ◽  
Tree Age ◽  
Ecological Groups ◽  
Polar Urals ◽  
Crown Density ◽  
Aphyllophoroid Fungi ◽  
The Polar Urals

Aboveground species richness patterns of vascular plants, aphyllophoroid macrofungi, bryophytes and lichens were compared along an altitudinal gradient (80–310 m a.s.l.) on the Slantsevaya mountain at the eastern macroslope of the Polar Urals (Russia). Five altitudinal levels were included in the study: (1) Northern boreal forest with larch-spruce in the Sob’ river valley habitats; (2–3) two levels of closed, northern boreal, larch-dominated forests on the slopes; (4) crook-stemmed forest; (5) tundra habitats above the timberline. Vascular plant or bryophyte species richness was not affected by altitudinal levels, but lichen species richness significantly increased from the river valley to the tundra. For aphyllophoroid macrofungi, species richness was highest at intermediate and low altitudes, and poorest in the tundra. These results indicate a positive ecotone effect on aphyllophoroid fungal species richness. The species richness of aphyllophoroid fungi as a whole was neither correlated to mortmass stocks, nor to species richness of vascular plants, but individual ecological or morphological groups depended on these parameters. Poroid fungal species richness was positively correlated to tree age, wood biomass and crown density, and therefore peaked in the middle of the slope and at the foot of the mountain. In contrast, clavarioid fungal species richness was negatively related to woody bio- and mortmass, and therefore peaked in the tundra. This altitudinal level was characterized by high biomass proportions of lichens and mosses, and by high litter mortmass. The proportion of corticoid fungi increased with altitude, reaching its maximum at the timberline. Results from the different methods used in this work were concordant, and showed significant patterns. Tundra communities differ significantly from the forest communities, as is also confirmed by nonmetric multidimensional scaling (NMDS) analyses based on the spectrum of morphological and ecological groups of aphyllophoroid fungi.

BIODIVERSITY AND INTERSLOPE DIVERGENCE OF VASCULAR PLANTS CAUSED BY MICROCLIMATIC DIFFERENCES AT “EVOLUTION CANYON”, LOWER NAHAL OREN, MOUNT CARMEL, ISRAEL

1999 ◽  
Vol 47 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Eviatar Nevo ◽  
Ori Fragman ◽  
Amots Dafni ◽  
Avigdor Beiles
Keyword(s):  
Natural Selection ◽  
Species Diversity ◽  
Vascular Plants ◽  
Vascular Plant ◽  
Plant Cover ◽  
Life Forms ◽  
Valley Bottom ◽  
Content Sharing ◽  
The North ◽  
Evolution Canyon

Species diversity of plants was recorded in 1992 and 1993 at seven stations of the “Evolution Canyon” microsite. Higher solar radiation on the South-Facing Slope (SFS) causes warm, xeric savannoid formation versus temperate, cool, mesic, dense maquis on the North-Facing Slope (NFS), and riverine, segetal plant formations on the Valley Bottom (VB). In an area of 7000 m2, we recorded 320 vascular plant species in 217 genera and 59 families. Plant cover varied from 35% (SFS) to 150% (NFS). Annuals predominated among all life forms (61.3% of all species). SFS and NFS varied in species content, sharing only 31–18% of species. Phytogeographical types varied among the two slopes and valley bottom. Inter-and intraslope species composition varied drastically due to differential microclimatic stresses, thereby demonstrating at a microscale natural selection in action.

scholarly journals Plant Life Forms

Nature ◽  
1937 ◽  
Vol 140 (3555) ◽  
pp. 1035-1035
Keyword(s):  
Life Forms ◽  
Plant Life Forms ◽  
Plant Life

scholarly journals Root-shoot interactions and plant life forms.

1983 ◽  
Vol 31 (4) ◽  
pp. 291-303
Author(s):  
E.-D. Schulze
Keyword(s):  
Leaf Area ◽  
Water Uptake ◽  
Transpiration Rate ◽  
Plant Architecture ◽  
Life Forms ◽  
Competitive Growth ◽  
Nutrient Flows ◽  
Plant Life Forms ◽  
Plant Life ◽  
Root:Shoot Ratios

Interactions of water and nutrient flows on C relations are explained and typical features of root:shoot ratios in perennial plants including grasses and woody spp. are discussed. In a hydrostable annual crop plant (cowpea) partitioning was controlled by transpiration rate/leaf area and by the capacity of the root for water uptake. For perennial woody spp. the significance of plant architecture and morphology is demonstrated for a situation of competitive growth. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Influence of Habitat Types on Diversity and Species Composition of Urban Flora—A Case Study in Serbia

Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2572
Author(s):  
Milan Glišić ◽  
Ksenija Jakovljević ◽  
Dmitar Lakušić ◽  
Jasmina Šinžar-Sekulić ◽  
Snežana Vukojičić ◽  
...  
Keyword(s):  
Species Composition ◽  
Vascular Plant ◽  
Habitat Type ◽  
Floristic Composition ◽  
Life Forms ◽  
Urban Habitat ◽  
Residential Areas ◽  
Gamma Diversity ◽  
Habitat Types ◽  
Diagnostic Species

The aim of this study was to investigate the floristic composition and diversity of seven urban habitat types in 24 Serbian cities with different climatic affiliation. In each of the 24 cities, we selected 1 ha plots representing a habitat from one of the following groups: square, boulevard, residential area with compact and with open building pattern, city park, and sites with early and mid-succession vegetation stages. All vascular plant species that occur spontaneously in these plots were observed. Data on the main climatic characteristics were collected for each plot, and data on the life forms were obtained for each species recorded. Diagnostic species were identified for each habitat type analyzed, and alpha, beta and gamma diversity were calculated. A total of 674 taxa were recorded in the studied area. Significant differences were observed in habitats by diagnostic species and by life form representation. The lowest alpha and gamma diversity and the dominance of therophytes were observed in habitat types with intensive anthropogenic impact, whereas the highest number was recorded in mid-successional sites and residential areas with a compact building pattern. The analysis showed that habitat type influences species composition much more than climate.

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