Plant and soil relationship in different halophytic communities

2002 ◽  
pp. 377-383
Author(s):  
Muhammad Zafar Iqbal ◽  
Sobia Maleeha ◽  
Muhammad Shafiq
Keyword(s):  
Halophytic Communities

Halophytic plant communities of the Stavropol’ depression (Samara Region)

2003 ◽  
pp. 42-50 ◽  
Author(s):  
T. M. Lysenko ◽  
D. N. Karpov ◽  
V. B. Golub
Keyword(s):  
Plant Communities ◽  
Halophytic Plant ◽  
Halophytic Communities

Halophytic communities and their complexes des­cribed on the territory of Stavropol’ district of Samara region are characterized in the article. They were referred to the class Thero-Salicornietea R. Tx. ex Géhu et Géhu-Franck 1984 and class Festuco-Puccinellietea Soó 1968.

Studies on halophytes from Iran and Afghanistan. II Ecology of halophytes along salt gradients

1986 ◽  
Vol 89 ◽  
pp. 203-215 ◽  
Author(s):  
Siegmar-W. Breckle
Keyword(s):  
Ionic Composition ◽  
Physiological Characteristics ◽  
Ion Concentrations ◽  
Ecological Implications ◽  
Halophytic Communities

SynopsisThe halophytic communities of Iran and Afghanistan are rich in species compared with similar communities in S Europe or in N America. Ionic composition and the ion concentrations in the respective habitats characterise the main phytochemical types which develop. Such chemotypes or physiotypes of halophytes are partly correlated with conventional taxonomic units. The various types of halophytes from Iran and Afghanistan were compared and some eco-physiological characteristics are presented. The differences between “stem-halosucculents”, “leaf-halosucculents”, “recreting halophytes”, and types of ‘salt-avoiders” (“pseudohalophytes” and “non-halophytes” or “glycophytes”) are stressed. The ecological implications of the characteristics of these different halophytes, which lead to a typical halo-catena, are discussed.

scholarly journals Taxonomic analysis of saline habitats flora of the Southern Urals

2018 ◽  
Vol 7 (1) ◽  
pp. 50-53
Author(s):  
Daniel Nikolayevich Karpov ◽  
Stanislav Danielivich Karpov ◽  
Liliya Zaynullovna Atnasheva
Keyword(s):  
Higher Plants ◽  
Southern Urals ◽  
Saline Soils ◽  
The Southern Urals ◽  
Puccinellia Distans ◽  
Taxonomic Analysis ◽  
Number Of Species ◽  
Ephedra Distachya ◽  
Saline Habitats ◽  
Halophytic Communities

The paper presents a taxonomic analysis of saline habitats flora of the southern Urals. The authors have established vegetation of 317 types of glycophytic and halophytic higher plants belonging to 172 genera and 44 families on the saline soils of the southern Urals (including adjacent territories). The number of halophytic species in the studied area is low and estimated at 59 or 18,6% of the total number of species. Among them are representatives of the genus Limonium, of the family Chenopodiaceae - Halimione verrucifera , Salicorna perennans , Suaeda acuminata , S. corniculata , S. prostrata ; family Asteraceae - Artemisia lerchiana , A. nitrosa , Cirsium esculentum , family Poaceae - Hordeum brevisubulatum , Puccinellia distans , etc. The vast majority of flora - 316 species (99,9%) - belong to the division Magnoliophyta, 251 species (79,4%) are Magnoliopsida members and 65 (20,6%) are registered in the class Liliopsida. The ratio of monocots and dicots is expressed in a proportion of 1: 3,8. The largest families in saline soils flora of the southern Urals are: Asteraceae, Poaceae, Chenopodiaceae, Fabaceae, Cyperaceae, Apiaceae, Rosaceae. Caryophyllaceae, Lamiaceae, Scrophulariaceae, Polygonaceae, Ranunculaceae number of species from 57 to 9, in total 247 species. There is a clear predominance of the hemicryptophytes - 232, 19 geoview, 11 - geloview, biennials - 9; one - biennials - 4, tirefits - 56, hamiphites - 19, nano phanerophytes - 5, - 1 phanerophytes. In halophytic communities on salted soils that form complexes with glycophyte ones 4 of relict and endemic species Koeleria sclerophylla , Glycyrrhiza korshinskyi , Nanophyton erinaceum , Ephedra distachya meet, 27 are in need of protection, including 4 halophyt ( Frankenia hirsuta , Limonium bellidifolium , L. macrorhizon , L. suffruticosum ).

Influence of edaphic factors on the spatial structure of inland halophytic communities: a case study in China

1998 ◽  
Vol 9 (6) ◽  
pp. 797-804 ◽  
Author(s):  
Daiyuan Pan ◽  
André Bouchard ◽  
Pierre Legendre ◽  
Gérald Domon
Keyword(s):  
Spatial Structure ◽  
Edaphic Factors ◽  
Halophytic Communities

Late Quaternary Vegetational and Climatic Changes in the Pampa Grassland of Argentina

1996 ◽  
Vol 45 (1) ◽  
pp. 73-88 ◽  
Author(s):  
Aldo Raúl Prieto
Keyword(s):  
Sea Level ◽  
18Th Century ◽  
Late Quaternary ◽  
Climatic Changes ◽  
Annual Precipitation ◽  
Southwestern Part ◽  
Edaphic Conditions ◽  
Dry Conditions ◽  
Vegetation Characteristic ◽  
Halophytic Communities

AbstractThe vegetation and climate of the Pampa grassland, Argentina, during the late Quaternary are reconstructed from pollen recovered from dated stratigraphic sections from arroyo walls and from archaelogical excavations. Prior to 10,500 yr B.P., herbaceous psammophytic steppe existed in the central part of the Pampa grassland while xerophytic woodland associated with psammophytic and halophytic steppe occurred in the southwestern part of the Pampa. These types of vegetation and the continental conditions that prevailed in the area of the present-day coast (38°S), indicate subhumid-dry climate and annual precipitation 100 mm lower than present. A subsequent change toward a vegetation characteristic of ponds, swamps, and foodplains, or toward environments with locally more effective moisture, occurred ca. 10,500 yr B.P. suggesting annual precipitation close to modern levels or a higher availability of water in the central part of the Pampa grassland, this type of vegetation existed until 8000 yr B.P., when it was replaced by grassland communities that lasted until 7000 yr B.P. In the southwestern part of the Pampa grassland, this vegetation developed before 7000 yr B.P. and persisted until ca. 5000 yr B.P. Sea level higher than the present ca. 6200 yr B.P. is consistent with sharp modification of the vegetation and development of local halophytic communities dominant at 38°S. A return to subhumid-dry conditions occurred after 5000 yr B.P. The late Holocene vegetation is characterized by pollen assemblages similar to the psammophytic and halophytic communities of the Southern pampa grassland, associated with communities with more edaphic conditions. At the same time, at 38°S a sea level regression is suggested by the dominance of fresh-water pollen assemblages and micropaleontological remains. The trend toward humid, temperate conditions ca. 1000 yr B.P. suggested by vertebrate remains characteristic of temperate and humid conditions, as well as a very short but dry episode during the 18th century suggested by the geology, are not clearly evidenced in the pollen sequences. Vegetational and climatic changes are explained by the latitudinal shifts and changes in intensity of the southern atmospheric circulation and changes in sea level.

Vegetation and climate change Since 14,810 14C yr B.P. in southeastern uruguay and implications for the rise of early Formative societies

2006 ◽  
Vol 65 (1) ◽  
pp. 20-32 ◽  
Author(s):  
José Iriarte
Keyword(s):  
South America ◽  
Environmental Changes ◽  
Late Glacial ◽  
Climatic Conditions ◽  
Humid Climate ◽  
Drying Trend ◽  
Late Glacial And Holocene ◽  
Halophytic Communities ◽  
Early Formative

AbstractThis article presents a combined pollen and phytolith record of a 1.70-m sediment core from the wetlands of India Muerta (33° 42′ S, 53° 57′ W) in the lowland Pampa (grasslands) of southeastern Uruguay. Six 14C dates and the pollen and phytolith content of the samples permitted the recognition of four distinct climatic periods between 14,850 14C yr B.P. and the present. The Late Pleistocene period (between ca. 14,810 and ca. 10,000 14C yr B.P.) was characterized by drier and cooler conditions indicated by the presence of a C3-dominated grassland. These conditions prevailed until the onset of the warmer and more humid climate of the Holocene around 9450 14C yr B.P. The early Holocene (between around 10,000 and 6620 14C yr B.P.) was characterized by the establishment of wetlands in the region as evidenced by the formation of black peat, the increase in wetland taxa, and the replacement of C3 Pooideae by C4 Panicoideae grasses. During the mid-Holocene, around 6620 14C yr B.P., began a period of environmental change characterized by drier climatic conditions, which resulted in the expansion of halophytic communities in the flat, low-lying areas of the wetlands of India Muerta. About 4020 14C yr B.P. a massive spike of Amaranthaceae/Chenopodiaceae coupled with a radical drop in wetland species indicates another major and more severe period of dryness. After ca. 4000 14C yr B.P., a decrease of halophytic species indicates the onset of more humid and stable climatic conditions, which characterized the late Holocene.The findings reported in this article substantially improve our knowledge of the late Glacial and Holocene climate and vegetation in the region. The data provide a detailed record of the timing and severity of mid-Holocene environmental changes in southeastern South America. Significantly, the mid-Holocene drying trend coincided with major organizational changes in settlement, subsistence, and technology of the pre-Hispanic populations in the region, which gave rise to early Formative societies. This study also represents the first combined pollen and phytolith record for southeastern South America reinforcing the utility of phytoliths as significant indicators of long-term grassland dynamics.

scholarly journals Syntaxonomy of vegetation of Kalush hexachlorobenzene toxic waste landfill (Ivano-Frankivsk region)

2016 ◽  
Vol 24 (2) ◽  
pp. 364-370
Author(s):  
V. I. Parpan ◽  
N. V. Shumska ◽  
M. J. Rudeichuk-Kobzeva ◽  
M. M. Mylenka
Keyword(s):  
Hazardous Waste ◽  
Vegetation Cover ◽  
Test Site ◽  
Toxic Waste ◽  
Moisture Regime ◽  
Herbaceous Plant ◽  
Vegetation Composition ◽  
Waste Landfill ◽  
Halophytic Communities ◽  
Succession Processes

The vegetation of a landfill of hexachlorobenzene toxic waste was studied. It is situated in the neighborhood of Kalush (Ivano-Frankivsk region) and has an area of 4.5 ha. As a result of damage to the containers, hazardous waste has contaminated the air, soil and aquifers at the test site and adjacent areas. During the period 2010–2012 measures were taken to recover and remove the mixture of toxic waste and contaminated soil from the landfill. In its place, unpolluted soil was brought to the landfill. Work was carried out to recultivate the territory. Nowadays natural succession of vegetation cover is observed. There is closed herbaceous cover in the western part of the landfill. The total projective herbaceous cover in the central and eastern parts varies from 10% to 60%. Vegetation composition of the landfill contains eight syntaxa of association rank that belong to seven alliances, six orders and five classes. Communities of the Phragmito-Magnocaricetea and Bolboschoenetea maritimi classes (ass. Typhetum laxmanii) grow in areas with excessive humidification. The central and eastern parts of the waste landfill are primarily occupied by halophytic communities of the Puccinellio distanti-Tripolietum vulgare association of the Asteretea tripolium class. Ruderal communities belong to three associations of the Artemisietea vulgaris class. These communities mainly occur in the periphery zone of Kalush landfill. Areas with a moderate moisture regime are occupied by ruderal communities of the Calamagrostietum epigeios association of the Agropyretea repentis class. The total number of vascular herbaceous plant species at the landfill is 119. The dominating groups are meadow, synanthropic and wetland species. The differentiation of vegetation cover is caused by heterogeneity of edaphic and hydrological conditions, also by different activity of succession processes. 

SOME EFFECTS OF INCREASING SOIL SALINITY ON PLANT COMMUNITIES

1958 ◽  
Vol 36 (1) ◽  
pp. 79-89 ◽  
Author(s):  
Lloyd B. Keith
Keyword(s):  
Saline Soils ◽  
Upward Movement ◽  
Soluble Salts ◽  
Clear Cut ◽  
The Third ◽  
Natural Lake ◽  
Per Se ◽  
Prairie Community ◽  
Halophytic Communities ◽  
Prairie Vegetation

Analyses of halophytic vegetation and saline soils adjacent to three different-aged impoundments were conducted on a study area in southeastern Alberta. Two impoundments had been constructed by Ducks Unlimited (Canada), and were 4 and 8 years old. The third was a small natural lake. Mesic prairie vegetation and soils were also sampled to secure comparative data. The establishment of artificial impoundments has raised the water table, permitting a rapid upward movement of soluble salts into the surface soils from lower levels in the glacial drift. Four distinct halophytic communities were recognized: a Hordeum community around all three impoundments, a Distichlis community around the older two, and Suaeda–Chenopodium and Salicornia communities around the oldest (the natural lake). It is believed that as salt concentrations increase the mesic prairie community is replaced by a Hordeum community which in turn is replaced by a Distichlis community. Evidence of Suaeda–Chenopodium and Salicornia communities supplanting the Distichlis community is not clear cut and edaphic factors other than salinity per se are involved.

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