scholarly journals Vegetation Classification of Juniperus communis L. Species in Azerbaijan

2019 ◽  
Vol 9 (6) ◽  
Author(s):  
Afag Rzaeva
Keyword(s):  
Vegetation Classification ◽  
Juniperus Communis

Second international scientific conference «Present fundamental problems of vegetation classification» (Yalta, 15–20 September 2019)

2019 ◽  
pp. 135-142
Author(s):  
K. V. Ivanova ◽  
A. M. Lapina ◽  
V. V. Neshataev
Keyword(s):  
Plant Communities ◽  
National Archive ◽  
Botanical Garden ◽  
Vegetation Classification ◽  
Scientific Conference ◽  
Scientific Journals ◽  
Time Dynamics ◽  
The Past ◽  
Research Organizations

The 2nd international scientific conference «Fundamental problems of vegetation classification» took place at the Nikitskiy Botanical Garden (Yalta, Republic of Crimea, Russia) on 15–20 September 2019. There were 56 participants from 33 cities and 43 research organizations in Russia. The conference was mostly focused on reviewing the success in classification of the vegetation done by Russian scientists in the past three years. The reports covered various topics such as classification, description of new syntaxonomical units, geobotanical mapping for different territories and types of vegetation, studies of space-time dynamics of plant communities. The final discussion on the last day covered problems yet to be solved: establishment of the Russian Prodromus and the National archive of vegetation, complications of higher education in the profile of geobotany, and the issue of the data leakage to foreign scientific journals. In conclusion, it was announced that the 3rd conference in Nikitskiy Botanical Garden will be held in 2022.

Classification of woody-shrub vegetation of the forest-steppe complex of Privolzhskaya Upland

2009 ◽  
pp. 27-53
Author(s):  
A. Yu. Kudryavtsev
Keyword(s):  
Plant Community ◽  
Plant Communities ◽  
Dominant Species ◽  
Large Scale ◽  
Nature Reserve ◽  
Vegetation Mapping ◽  
Vegetation Classification ◽  
Forest Steppe ◽  
Mapping Data

Diversity of plant communities in the nature reserve “Privolzhskaya Forest-Steppe”, Ostrovtsovsky area, is analyzed on the basis of the large-scale vegetation mapping data from 2000. The plant community classi­fication based on the Russian ecologic-phytocoenotic approach is carried out. 12 plant formations and 21 associations are distinguished according to dominant species and a combination of ecologic-phytocoenotic groups of species. A list of vegetation classification units as well as the characteristics of theshrub and woody communities are given in this paper.

Carabid Beetle and vegetation associations in the Tasmanian Eastern Tiers: implications for conservation

1998 ◽  
Vol 4 (3) ◽  
pp. 240 ◽  
Author(s):  
Karyl Michaels ◽  
Louise Mendel
Keyword(s):  
Evaluation Criteria ◽  
Vegetation Classification ◽  
Carabid Beetle ◽  
Conservation Value ◽  
Pitfall Traps ◽  
High Conservation ◽  
Conservation Values ◽  
Conservation Assessments ◽  
Sclerophyll Forests

The distribution and abundance of the carabid beetle fauna of selected grassy ecosystems, wet and dry sclerophyll forests, and wet heaths in the Eastern Tiers, Tasmania was examined using pitfall traps. The conservation values of the sites were assessed by applying evaluation criteria typically used for vegetation (i.e., representativeness, typicalness, diversity and rarity) to both the carabid fauna data and the vegetation data. Sites of high conservation value for carabids and vegetation were identified and compared. Sites that ranked highest in terms of the carabid fauna on all conservation criteria were not the sites that ranked highest based on the vegetation. Classification of sites produced different results depending on whether plant or carabid data were used. Conservation based solely on vegetation attributes will therefore not necessarily conserve a rich and/or representative carabid fauna. If the objective to conserve a representative range of all biota is to be met, the use of additional taxa such as carabids in conservation assessments is desirable.

Classification of communities with invasive species in the South Urals. II. Communities with a presence of genera Cyclachaena Fresen. and Xanthium L. species

2015 ◽  
pp. 24-39 ◽  
Author(s):  
L. M. Abramova
Keyword(s):  
Invasive Species ◽  
Vegetation Classification ◽  
South Urals ◽  
Black Book ◽  
The South ◽  
Species Invasion ◽  
Flood Plains ◽  
Central Russia ◽  
Deductive Method

This article is the second part of the series of publications on vegetation classification of communities with invasive species in the South Urals (Abramova, 2011). The communities with a presence of two aggressive species of North American origin such as Cyclachaena xanthiifolia (Nutt.) Fresen. and Xanthium albinum (Widd.) H. Scholz. are presented. Both species are included in “The black book of flora of the Central Russia” (Vinogradova et al., 2010). Research was conducted during 2000–2009 in the territory of Bashkortostan Republic. Species invasion in the region and their naturalization on flood plains of the South Urals was noted (Abramova, Anufriyev, 2008; Abramova, 2014; Abramova, Nurmiyeva, 2014). In the centers of invasion of mentioned species 110 complete geobotanical descriptions of communities on trial platforms of 4–100 m² were executed. Classification of communities with the invasive species is carried out according to the Braun-Blanquet method with application of the deductive method (Kopečky, Hejny, 1974). The allocated syntaxa were compared to units earlier described in Bashkortostan Republic and other regions (Vegetace …, 2009; Yamalov et al., 2012; etc.).

Isolation, absolute configuration and bioactivities of megastigmanes or C13 isonorterpinoides

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Cucumis Sativus ◽  
Absolute Configuration ◽  
Oxidative Cleavage ◽  
Juniperus Communis ◽  
Plant Source ◽  
Potential Activity ◽  
Terminal Component

Megastigmanes or C13 isonorterpenoids a terpene class of compounds, specially the title compounds are related to sesquiterpenoides but due to C13 skeleton also it is called as norterpenoides. Most of the megastimane compounds have been isolated from the plant source such as Cucumis sativus, Crotalaria zanzibarica, staphylea bumalda, Juniperus communis and Excoecaria cohinchinensis etc. Few reports were showing the megastimane compounds are showing potencial activity against scavenging radical (DPPH) and hepatoprotective activities. The classification of C13 norisoprenoides, are assumed to be apocarotenoides that is formed from the degradation of carotenoides by the action of carotenoides cleavage dioxygenases which have been isolated from various plants. The majority of the evidences for this assumption is the similarly between most megastigmanes and the terminal component of plant carotenoides. Because such compounds are generally not oxygenated at C7 but commonly oxygenated at C9 presumably as a result of the oxidative cleavage of the acyclic portion of caritenoides, the key step in megastigmanes formation has been thought to be transportion of oxygen from C9 to C7. Hence, based on the above information the C9 position and its absolute configuration is very important to get potential activity against various diseases, in this progression a lot of literature reports were showing the importance and absolute configuration at C9 position in megastigmanes or C13 norisoprenoides. In this review, we are reporting the chemistry, absolute configuration and bioactivities of megastigmanes or C13 norisoterpenoides. To our knowledge, this is the first review on megastimanes and its absolute configuration.

The influence of sampling intensity on vegetation classification and the implications for environmental management

2006 ◽  
Vol 33 (2) ◽  
pp. 118-127 ◽  
Author(s):  
A. COOPER ◽  
T. MCCANN ◽  
R. G. H. BUNCE
Keyword(s):  
Random Sample ◽  
Landscape Structure ◽  
Landscape Scale ◽  
Vegetation Classification ◽  
Sampling Effort ◽  
Sampling Intensity ◽  
Natural Grasslands ◽  
The Uk ◽  
Natural Grassland

As part of a programme of landscape-scale habitat surveillance in the United Kingdom (UK), the effect of grassland sampling intensity on the outcome of numerical classification was assessed. Sample quadrats from two regions of the UK were available for post priori analysis; a random sample from Great Britain (GB), with grasslands sampled in proportion to area, and an independent stratified random sample from Northern Ireland (NI), with similar numbers of quadrats from agricultural and semi-natural grassland habitat strata. Classification of a combined area-proportional (balanced) random sample from GB and NI showed the species composition of UK grasslands to be determined largely by climate, landscape structure and land-use intensity. The classification was influenced primarily by the greater number of eutrophic agricultural grassland quadrats and semi-natural grassland quadrats of the larger GB study area. The semi-natural grasslands of NI, represented by a small number of quadrats, had little influence. Classification of a stratified NI sample combined with an area-proportional GB sample was influenced most by the NI semi-natural grassland quadrats. The structure of the classifications depended on sampling intensity. Vegetation classification should be derived from a balanced sample so that it is representative and its application does not lead to decisions being directed at classes of vegetation (or estimates derived from them) that are weighted by sampling intensity. Area-proportional sample design linked explicitly to landscape structure satisfies the requirement for a balanced classification. The issue of data-balance is relevant in conservation management and environmental assessment, where stratification is a commonly accepted procedure to reduce sampling effort, or is carried out to sample rare or ecologically interesting vegetation. It applies to landscape-scale vegetation classifications used for environmental assessments and to classifications that compare plant communities between regions (as in phytosociological studies). The issue is also important when combining environmental databases from international sources for classification purposes.

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