Phytosociological Classification of Grassland Vegetation

Dry Grasslands in the Slovenský Kras MTS (Slovakia) and the Aggteleki-karszt MTS (Hungary) — A Comparison of Two Classification ApproachesThe paper brings numerical classification of 48 new phytosociological relevés of dry grassland vegetation from the Slovenský kras Mts and the Aggteleki-karszt Mts located on the border between Slovakia and Hungary (Central Europe). We performed a comparison of two classification approaches (an unsupervised method - modified TWINSPAN, and a supervised approach - electronic expert system based on formal definitions of associations), which were applied on the same dataset. Four associations were distinguished:Campanulo divergentiformis-Festucetum pallentisZólyomi (1936) 1966,Poo badensis-Caricetum humilis(Dostál 1933) Soó ex Michálková in Janišová et al. 2007,Alysso heterophylli-Festucetum valesiacae(Dostál 1933) Kliment in Kliment et al. 2000 andFestuco rupicolae-Caricetum humilisKlika 1939. A newly recorded stand of the rareStipetum tirsaeMeusel 1938 association is characterised. What is more, we established a neotype of theAlysso heterophylli-Festucetum valesiacaeassociation.

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Classification of zoogenic and anthropogenic vegetation of Central-Siberian sector of the Arctic (Taymyr Peninsula, Severnaya Zemlya Archipelago)

Vegetation of Russia ◽

10.31111/vegrus/2001.01.6 ◽

2001 ◽

pp. 6-16 ◽

Cited By ~ 4

Author(s):

L. L. Zanokha

Keyword(s):

The Arctic ◽

Grass Cover ◽

Tundra Zone ◽

Grassland Vegetation ◽

Polar Desert ◽

New Associations ◽

Anthropogenic Vegetation ◽

Severnaya Zemlya ◽

Severnaya Zemlya Archipelago

The grassland vegetation which occurs in places of animal colonies or around human settlements in the Central-Siberian sector of the Arctic is referred to 2 new associations, namely Saxifrago cernuae—Alopecuretum alpini and Poo arcticae—Calamagrostietum holmii ass. nov., and also to 2 variants (inops and Astragalus umbellatus var. nov) of the previously described association Saxifrago hirculi—Poetum alpigenae (Zanokha, 1995). The first association is distributed within the whole Taymyr Peninsula and also the part of the polar desert subzone in the Bolshevik Isl. The grass cover is formed by Poa alpigena and Alopecurus alpinus in various combinations of their dominance. The ass. Poo arcticae—Calamagrostietum holmii is distributed only throughout the tundra zone of Taymyr; its grass layer consists of Calamagrostis holmii and Poa arctica. The mentioned variants of ass. Saxifrago hirculi—Poetum alpigenae occur locally in the vicinities of Dixon settlement.

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(A review) A. V. Polujanov, E. A. Averinova. Grassland vegetation of the Kursk region. Kursk, 2012. 276 p.

Vegetation of Russia ◽

10.31111/vegrus/2013.22.129 ◽

2013 ◽

pp. 129-131

Author(s):

B. M. Mirkin ◽

L. G. Naumova

Keyword(s):

Large Region ◽

Grassland Vegetation ◽

Central Chernozem Region ◽

Floristic Classification ◽

Kursk Region ◽

Central Chernozem

The emergence of peer-reviewed monographs on herbal floristic classification of the vegetation of the Kursk region is a large region of the Central Chernozem region of Russia was preceded by the publication of another work on the vegetation of the Kursk region within the basin of the Sejm.

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Classification of continental halophytic grassland vegetation of Southeastern Europe

Phytocoenologia ◽

10.1127/phyto/2016/0076 ◽

2016 ◽

Vol 46 (3) ◽

pp. 317-331 ◽

Cited By ~ 3

Author(s):

Zora Dajić Stevanović ◽

Svetlana Aćić ◽

Milica Luković ◽

Ivana Zlatković ◽

Jovica Vasin ◽

...

Keyword(s):

Southeastern Europe ◽

Grassland Vegetation

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Ecological Evaluation of Grassland Vegetation in Hodrušská Hornatina Highland

Ekológia (Bratislava) ◽

10.2478/eko-2020-0018 ◽

2020 ◽

Vol 39 (3) ◽

pp. 236-249

Author(s):

Alexandra Klimantová

Keyword(s):

Species Composition ◽

Environmental Variables ◽

Environmental Gradient ◽

Detrended Correspondence Analysis ◽

Grassland Vegetation ◽

Ecological Evaluation ◽

Factors Affecting ◽

Phytosociological Relevés ◽

Grassland Communities

AbstractIn the submitted paper, we have analysed the results of a systematic survey of grassland communities, performed in Hodrušská hornatina highland, in Štiavnické vrchy mountains. The main aims of the research were: i) syntaxonomical classification of grassland vegetation; ii) analysis of the main ecological gradients in species composition; iii) evaluation of the influence of environmental factors on species composition of grasslands. The dataset included 153 phytosociological relevés recorded on grasslands. Grassland communities were classified within five associations: Holcetum lanati, Pastinaco sativae-Arrhenatheretum elatioris, Alchemillo-Arrhenatheretum elatioris, Anthoxantho odorati-Agrostietum tenuis, Onobrychido viciifoliae-Brometum erecti; and the successional and transitional stages belonging to alliances Arrhenatherion elatioris and Bromion erecti. The results of the Detrended Correspondence Analysis support our assumption that the main environmental gradient in species composition on grassland is related to moisture. The results of the Redundancy Analysis show that all used environmental variables explained 3.4% of the variability of the species data. The most important factors affecting the species composition were altitude, slope, distance from settlements, and management.

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Note on the spectral classification of carbon stars in the photographic infrared region

Symposium - International Astronomical Union ◽

10.1017/s0074180900053080 ◽

1966 ◽

Vol 24 ◽

pp. 21-23

Author(s):

Y. Fujita

Keyword(s):

Infrared Region ◽

Spectral Classification ◽

Carbon Stars

We have investigated the spectrograms (dispersion: 8Å/mm) in the photographic infrared region fromλ7500 toλ9000 of some carbon stars obtained by the coudé spectrograph of the 74-inch reflector attached to the Okayama Astrophysical Observatory. The names of the stars investigated are listed in Table 1.

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Diagnostic Value of Electron Microscopy in Soft Tissue Tumors

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100068096 ◽

1970 ◽

Vol 28 ◽

pp. 220-221

Author(s):

Gerald Fine ◽

Azorides R. Morales

Keyword(s):

Cardiac Myxoma ◽

Osteogenic Sarcoma ◽

Diagnostic Value ◽

Soft Tissue Tumors ◽

Amelanotic Melanoma ◽

Growth Patterns ◽

Light Microscopic Level ◽

Mesenchymal Tumors ◽

Good Agreement

For years the separation of carcinoma and sarcoma and the subclassification of sarcomas has been based on the appearance of the tumor cells and their microscopic growth pattern and information derived from certain histochemical and special stains. Although this method of study has produced good agreement among pathologists in the separation of carcinoma from sarcoma, it has given less uniform results in the subclassification of sarcomas. There remain examples of neoplasms of different histogenesis, the classification of which is questionable because of similar cytologic and growth patterns at the light microscopic level; i.e. amelanotic melanoma versus carcinoma and occasionally sarcoma, sarcomas with an epithelial pattern of growth simulating carcinoma, histologically similar mesenchymal tumors of different histogenesis (histiocytoma versus rhabdomyosarcoma, lytic osteogenic sarcoma versus rhabdomyosarcoma), and myxomatous mesenchymal tumors of diverse histogenesis (myxoid rhabdo and liposarcomas, cardiac myxoma, myxoid neurofibroma, etc.)

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Ultrastructure of mesotheliomas

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100110775 ◽

1984 ◽

Vol 42 ◽

pp. 98-101

Author(s):

Irving Dardick

Keyword(s):

Electron Microscopy ◽

Latent Period ◽

Spindle Cell ◽

Spindle Cell Sarcoma ◽

Metastatic Adenocarcinoma ◽

Cell Sarcoma ◽

Cytological Features ◽

Industrial Use ◽

Degree Of Differentiation

With the extensive industrial use of asbestos in this century and the long latent period (20-50 years) between exposure and tumor presentation, the incidence of malignant mesothelioma is now increasing. Thus, surgical pathologists are more frequently faced with the dilemma of differentiating mesothelioma from metastatic adenocarcinoma and spindle-cell sarcoma involving serosal surfaces. Electron microscopy is amodality useful in clarifying this problem.In utilizing ultrastructural features in the diagnosis of mesothelioma, it is essential to appreciate that the classification of this tumor reflects a variety of morphologic forms of differing biologic behavior (Table 1). Furthermore, with the variable histology and degree of differentiation in mesotheliomas it might be expected that the ultrastructure of such tumors also reflects a range of cytological features. Such is the case.

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