scholarly journals Attempt to accurate the palaeophytosociological method in peat deposit investigations

10.5586/1162 ◽  
2014 ◽  
Vol 61 (1) ◽  
pp. 115-123 ◽  
Author(s):  
Adam Pałczyński
Keyword(s):  
Plant Communities ◽  
Peat Deposit ◽  
Plant Association ◽  
Plant Associations ◽  
Seeds And Fruits ◽  
Interpretation Of Results

Productivity of fruits and seeds of some more important plant associations of lowland mires in the valley of Biebrza river has been investigated. The results obtained were compared with results of stratigraphic analyses. These investigations aimed into accuration of the palaeophytosociological method of reconstruction of the subfossil plant association. The productivity of fruits and seeds of some species is in accordance with quantities occurring in peat-samples. Some other species do not exhibit such an accordance. Reasons are diversified. Of great importance is that the modern quantitetive data explain reasons why seeds of given species dominate in peat-samples and clearly show that the subfossil plant communities can be reconstructed, especially if accompanying species represented by seeds and vegetative remnants are also considered. Data on productivity of seeds and fruits of all peat-forming with regard to the particular plant association should be elaborated. This would make interpretation of results of stratigraphic analyses easier and the reconstruction of subfossil plant associations more reliable.

scholarly journals Ramondo-Ostryetum carpinifoliae – a new association from the hop-hornbeam forests of the Sharri Mountains, Kosovo

Hacquetia ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 323-336
Author(s):  
Naim Berisha ◽  
Fadil Millaku ◽  
Bekim Gashi ◽  
Vlado Matevski
Keyword(s):  
Plant Community ◽  
Plant Communities ◽  
Plant Association ◽  
Limestone Habitat ◽  
Plant Associations ◽  
New Association ◽  
Ostrya Carpinifolia ◽  
Ramonda Myconi

Abstract In Europe, the genus Ramonda is represented with three species: Ramonda nathaliae, Ramonda serbica and Ramonda myconi. The first two are endemic Balkan species that are distributed also in Kosovo. These species grow in limestone as well as serpentine substrates, forming chasmophytic vegetation. The species Ramonda nathaliae is found in Macedonia, Greece, Serbia and in two localities in Kosovo, in the Sharri Mountains (Luboten and Gotovushë). R. nathaliae forms the following plant associations in the serpentines of Macedonia: Asplenio­Ramondetum nathaliae and Scorzonero-Ramondetum nathaliae, and the Achilleo­Ramondetum nathaliae in limestone substrates. Ostrya carpinifolia is charateristic species in Querco pubescentis-Ostryetum carpinifoliae, Ostryo-Fagetum, Querco-Ostryetum carpinifoliae and Corylo colurnae-Ostryetum carpinifoliae. This paper presents plant communities of Ramonda nathaliae and Ostrya carpinifolia in a limestone habitat, where the proposed new plant association named Ramondo­Ostryetum carpinifoliae ass. nova. is described. This plant community belongs to the class Quercetea pubescentis, order Quercetalia pubescenti­petraeae and alliance Fraxino orni­Ostryion. It was found and described on the limestone substrate on Mt. Luboteni (at 960–982 m a.s.l.).

CHARACTERISTICS OF THE CLIFF PLANT COMMUNITIES OF THE TUAPKHAT MASSIF

2017 ◽  
Author(s):  
Sergey Krylenko ◽  
Sergey Krylenko
Keyword(s):  
Sustainable Development ◽  
Plant Communities ◽  
Biological Diversity ◽  
Life Forms ◽  
The Black Sea ◽  
Plant Associations ◽  
Black Sea Coast ◽  
Paper Structure ◽  
Sea Coast ◽  
Main Factor

Preservation of biological diversity is necessary for sustainable development and rational use of coastal resources. In this paper structure of the cliff plant communities of the massif Tuapkhat (the Black Sea coast, Russia) are characterized. Flora of this coastal zone combines features of Mediterranean and middle European Russia types. Herbaceous and shrub life-forms and xeromorphous and petrophilous plant associations dominate at the studied area. The main factor determining the species composition of the examined communities is substrate character.

CHARACTERISTICS OF THE CLIFF PLANT COMMUNITIES OF THE TUAPKHAT MASSIF

2017 ◽  
Author(s):  
Sergey Krylenko ◽  
Sergey Krylenko
Keyword(s):  
Sustainable Development ◽  
Plant Communities ◽  
Biological Diversity ◽  
Life Forms ◽  
The Black Sea ◽  
Plant Associations ◽  
Black Sea Coast ◽  
Paper Structure ◽  
Sea Coast ◽  
Main Factor

Preservation of biological diversity is necessary for sustainable development and rational use of coastal resources. In this paper structure of the cliff plant communities of the massif Tuapkhat (the Black Sea coast, Russia) are characterized. Flora of this coastal zone combines features of Mediterranean and middle European Russia types. Herbaceous and shrub life-forms and xeromorphous and petrophilous plant associations dominate at the studied area. The main factor determining the species composition of the examined communities is substrate character.

scholarly journals Vegetation dynamics under non-strong agricultural impact (by the example of Oktyabrsk village environs in the Uchalinskiy District of the Republic of Bashkortostan)

2021 ◽  
Vol 10 (1) ◽  
pp. 121-127
Author(s):  
Nazar Nikolayevich Nazarenko ◽  
Svetlana Yuryevna Batyusheva
Keyword(s):  
Plant Communities ◽  
Vegetation Dynamics ◽  
Vascular Plants ◽  
Abiotic Factors ◽  
Pasture Digression ◽  
Plant Associations ◽  
Republic Of Bashkortostan ◽  
Principal Factors ◽  
The Republic ◽  
Agricultural Impact

Vegetation and its biotopes that are transitional between ruderal and natural ones have been researched in Oktyabrsk village environs (Uchalinskiy District of the Republic of Bashkortostan). The studied vegetation is characterized by rather low biodiversity values and high values of dominance 56 species of vascular plants are identified, 10-species plant communities with 23 clear identified dominant and co-dominant species prevail. Ruderal species are dominant and co-dominant for the majority of plant communities. Fifteen plant associations and specific biotopes have been defined by multivariate statistics methods. The identified associations are phytometers for detected principal abiotic factors. The detected associations form ordination series the authors have identified three biotopical centers (ruderal, birch forest and steppe), three biotopical series and three coenotic series, which are associated with high and temperate pasture loading levels and pasture digression series, forming an integrated succession system of the studied territory. It has been established that principal factors of associations forming is pasture loading level and the principal factors of biotopes forming are soil moistening and its variability, ombroregime (humidification level), termoregime and regime of continentality (temperature-varying amplitude).

scholarly journals Geobotanical Study of the Microforests of Juniperus oxycedrus subsp. badia in the Central and Southern Iberian Peninsula

2019 ◽  
Vol 11 (4) ◽  
pp. 1111 ◽  
Author(s):  
Eusebio Cano ◽  
Carmelo Musarella ◽  
Ana Cano-Ortiz ◽  
José Piñar Fuentes ◽  
Alfonso Rodríguez Torres ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Iberian Peninsula ◽  
Plant Communities ◽  
Potential Evapotranspiration ◽  
Statistical Treatment ◽  
Juniperus Oxycedrus ◽  
Cross Border ◽  
Plant Associations ◽  
General Cluster ◽  
Cross Border Cooperation

We have studied Juniperus oxycedrus L. subsp. badia (H.Gay) Debeaux in the central and southern Iberian Peninsula, where the macrobioclimate ranges from Mediterranean-pluviseasonal-oceanic to Mediterranean-pluviseasonal-continental, and the thermotype from the thermo- to the supramediterranean. The relevés were taken following the Braun-Blanquet phytosociological methodology. A statistical treatment was applied to establish a separation among Juniperus communities. To understand the presence of Juniperus communities in territories dominated by species in the Quercus genus, we applied Thornthwaite’s formula to calculate potential evapotranspiration. The general cluster analysis clearly distinguishes two groups of plant communities and separates the different associations in each group. All the plant communities growing on rocky crests and in extremely steep sloping areas are significantly influenced by the soil. The ombroclimatic index does not explain the presence of plant communities influenced by substrate, so we proposed a new ombroedaphoxeric index which explains the presence of Juniperus communities in territories with a thermotype between the thermo- and supramediterranean. The areas of distribution of Juniperus species are expanding due to the spread of rocky areas; this phenomenon causes an increase in edaphoxerophilous areas and a decrease in climatophilous ones. We propose four new plant associations, with updated structures and floristic compositions. Efficient conservation is possible in both the territories studied (Spain and Portugal) through the implementation of specific cross-border cooperation projects.

ETUDE AGRO-ECOLOGIQUE DANS LE COMTE DE RIVIERE-DU-LOUP: ASPECT ECOLOGIQUE

1978 ◽  
Vol 58 (1) ◽  
pp. 117-128
Author(s):  
J. M. DESCHENES ◽  
J. C. ST-PIERRE
Keyword(s):  
Ecological Study ◽  
Ecological Factors ◽  
Vegetation Changes ◽  
Plant Association ◽  
Vegetation Survey ◽  
Land Utilization ◽  
Red Fescue ◽  
Plant Associations ◽  
Ecological Habitat ◽  
Successional Stages

Intensive studies of soil and vegetation were performed in Rivière-du-Loup County to identify various plant associations of meadows and pastures, describe the successional trends of each ecological habitat and establish a relationship between plant associations and various environmental factors. After vegetation survey and analysis, four plant associations and their successional trends were described. Each plant association was identified by the dominant species at the most advanced stage of secondary succession: (1) red fescue-bent grass association, (2) red fescue-Lindberg’s plume moss association, (3) bent grass–red fescue association, and (4) poverty grass–mouse-eared hawkweed association. All four plant associations were distributed in space according to the physiography and nature of the soils. Vegetation was highly influenced by age of sites. Young meadows and pastures were dominanted by timothy, red top, white clover and Canada bluegrass. Red fescue was very important on all 10 yr-old sites and remained so in all successional stages except in bent grass–red fescue and poverty grass–mouse-eared hawkweed associations. Vegetation changes with age depended on both ecological factors and land utilization. The results suggest that intensive soil studies and a rapid survey of vegetation would have provided results very similar to those obtained by a very detailed ecological study.

Vegetation diversity of the two Dinaric karstic rivers in Bosnia and Herzegovina

Biologia ◽  
2016 ◽  
Vol 71 (7) ◽  
Author(s):  
Anđelka Lasić ◽  
Nenad Jasprica
Keyword(s):  
Plant Communities ◽  
Bosnia And Herzegovina ◽  
Vegetation Diversity ◽  
Plant Associations ◽  
Phytosociological Relevés

AbstractPlant communities were studied along two oligotrophic karstic rivers – Trebižat and Lištica – from 2007 to 2009. Based on 93 phytosociological relevés, using Braun–Blanquet methods, a total of 25 plant associations were recognised in the rivers and nearby surveyed area. These associations have been subordinated to 11 alliances, eight orders and six classes:

scholarly journals Zur Pollenanalyse von Lössen: Untersuchungen der Lößprofile von Oberfellabrunn und Stillfried (Niederösterreich)

1964 ◽  
Vol 15 (1) ◽  
pp. 5-39
Author(s):  
Burkhard Frenzel
Keyword(s):  
Plant Communities ◽  
Vegetation History ◽  
Northern Eurasia ◽  
Loamy Soil ◽  
Plant Associations ◽  
Surface Samples ◽  
Last Glaciation ◽  
Steppe Communities ◽  
History Of ◽  
Eemian Interglacial

Abstract. A method for pollenanalytical investigations of loesses is described. If several sources of error are duely taken into consideration, this method is successful in the reconstruction of the vegetation history of those phases of pleniglacial times, during which the thick loess layers were accumulated. The method can be employed in pollenanalytical investigations of weathered and unweathered loesses, with the exception of redeposited loesses. It can be shown that the famous sequence of fossil soils at Oberfellabrunn, known as the soils of the "Fellabrunner Komplex" („Stillfried A"), which is sometimes held to be the equivalent of the "Göttweig Interstadial", must be divided into the brown loamy soil at the base of the sequence, which was formed during the Eemian Interglacial, and into the younger humic layers, which developed during the Interstadials of Amersfoort and Brørup. The amelioration of climate during the "Stillfried B-Interstadial" (perhaps equivalent of the "Paudorf Interstadial"?) was strong enough to enable local subalpine conifer forests and riverine broad-leaved forests to spread along the rivers and other suitable places within the still dominant steppe formations on the drier loess plateaus. The loess layers of the Riss and Würm glaciations have been accumulated within the eastern Dart of Niederösterreich in different steppe communities, which can be described at best as belonging to the Gramineae steppe formation, rich in herbaceous plants. Sometimes there occurred plants of recent tundra-communities in the loess steppe: but real tundras did not exist at that time in Niederösterreich. This holds true most of all for the last period of loess accumulation after the Stillfried B-Interstadial. When being compared with pollen spectra of surface samples of recent tundra, steppe and semidesert plant communities, it becomes evident, that the open vegetation, thriving during the last glaciation in vast regions of Northern Eurasia cannot be described in terms of modern plant associations.

scholarly journals Plant associations for three sawfly species (Hymenoptera, Tenthredinidae) in the Pacific Northwest

2019 ◽  
Vol 74 ◽  
pp. 27-33
Author(s):  
Quinlyn Baine ◽  
Chris Looney
Keyword(s):  
Pacific Northwest ◽  
Plant Association ◽  
Plant Associations ◽  
The Pacific

Plant associations are newly recorded for three tenthredinid species in the Pacific Northwest. A single Monardis pulla D.R. Smith, 1969 emerged from a chamber inside a cynipid gall on Rosa nutkana C. Presl. (Rosaceae). This is the first plant association record for M. pulla. Two Aphilodyctium fidum (Cresson, 1880) emerged from a stem and cynipid gall of Rosa rugibinosa Linnaeus, 1758, respectively. Several Rhogogaster lateraria (Cresson, 1880) eggs were discovered on Castilleja sp., which has no previously recorded sawfly associations.

scholarly journals Association distribution characteristics of natural and artificial Larix gmelinii forests along environmental gradients in northeast China

2019 ◽  
Author(s):  
Xiaohang Bai ◽  
Jinghua Yu ◽  
Shusheng Yuan ◽  
Yihong Tan
Keyword(s):  
Species Diversity ◽  
Northeast China ◽  
Larix Gmelinii ◽  
Annual Precipitation ◽  
Environmental Drivers ◽  
Slope Aspect ◽  
Scientific Management ◽  
Plant Association ◽  
Natural Forests ◽  
Plant Associations

Abstract Background: Larix gmelinii forest is one of coniferous forests in cold-temperate zone, which is a vital part of national strategic landscape of ecological security of China. Plant association distribution is different in natural and artificial Larix gmelinii forests, meanwhile, determining mechanisms in typical associations of Larix gmelinii forests still need to be explored. The study focused on which environmental factors actuated association distribution of natural and artificial Larix gmelinii forests in northeast China. Two-way indicator species analysis (TWINSPAN) and canonical correspondence analysis (CCA) were used to classify plant associations and explored the relationship between species and environment. Results: All the plots (n=175, size=30 m×30 m) of Larix gmelinii forests were classified into 6 plant associations by TWINSPAN. Species diversity in natural forests were higher than that in artificial forests. Ass.III and Ass.IV only appeared in natural forests, meanwhile, Ass.VI only appeared in artificial forests. The primary environmental drivers of species diversity patterns in natural forests were annual mean temperature, followed by annual precipitation, elevation, slope aspect, and canopy density. However, elevation and annual precipitation had strong effects in determining association distribution in artificial forests. Conclusions: Plant association distribution showed habitat preferences, besides, natural forests had higher species diversity and more resistance than artificial forests. The study can be used as a reference for Larix gmelinii forest ecosystem protection in northeast China and a theoretical basis for scientific management in similar areas.

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