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Journal articles on the topic 'Braun-Blanquet scale'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Dengler, Jürgen, and Iwona Dembicz. "Should we estimate plant cover in percent or on ordinal scales?" Vegetation Classification and Survey 4 (July 7, 2023): 131–38. http://dx.doi.org/10.3897/vcs.98379.

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Question: We explored the error resulting from different methods for recording the cover of plants in vegetation plots, specifically the direct estimation of percent cover vs. the use of ordinal cover scales (7-step Braun-Blanquet and 5-step Hult-Sernander-Du Rietz). Methods: We simulated 121 plant species of different cover, sampled with 13 different levels of estimation precision. Estimation precision was either based on a constant coefficient of variation (0.1–1.0) across all cover values or on empirical data from Hatton et al. (1986, Journal of Range Management 39: 91–92) (× 0.5, × 1.0, ×

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Dengler, Jürgen, and Iwona Dembicz. "Should we estimate plant cover in percent or on ordinal scales?" Vegetation Classification and Survey 4 (July 7, 2023): 131–38. https://doi.org/10.3897/VCS.98379.

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Question: We explored the error resulting from different methods for recording the cover of plants in vegetation plots, specifically the direct estimation of percent cover vs. the use of ordinal cover scales (7-step Braun-Blanquet and 5-step Hult-Sernander-Du Rietz). Methods: We simulated 121 plant species of different cover, sampled with 13 different levels of estimation precision. Estimation precision was either based on a constant coefficient of variation (0.1–1.0) across all cover values or on empirical data from Hatton et al. (1986, Journal of Range Management 39: 91–92) (× 0.5, × 1.0, ×

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Chmura, Damian, and Anna Salachna. "The Errors in Visual Estimation of Plants Cover in the Context of Education of Phytosociology." Chemistry-Didactics-Ecology-Metrology 21, no. 1-2 (2016): 75–82. http://dx.doi.org/10.1515/cdem-2016-0006.

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AbstractIn vegetation science including phytosociology, visual estimates of plant cover and point method belong to the common field method to record species composition and their abundance. Two methods were compared: Braun-Blanquet scale and point method using Levy bridge. A group of students performed measurements in five plots belonged to an oak-hornbeam forest Tilio-Carpinetum. It was revealed that there is a very high discrepancy in a observed number of species. Total mean numbers obtained are 13.4 and 31.2 for point method and Braun-Blanquet method respectively. However, there is the sign

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Golovanov, Yaroslav, and Larisa Abramova. "Database of anthropogenic vegetation of the Urals and adjacent territories." BIO Web of Conferences 38 (2021): 00037. http://dx.doi.org/10.1051/bioconf/20213800037.

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The main data on the geobotanical database – Database of antropogenic vegetation of Urals and adjacent territories registered in the Global Index of Vegetation-Plot Databases and the European Vegetation Archive are presented. The database includes more than 4,000 complete geobotanical relevés made between 1984 and 2020. The database contains the territories of 3 subjects of the Russian Federation (the Republic of Bashkortostan, Orenburg, Chelyabinsk regions) and 1 - the Republic of Kazakhstan (Aktobe region). For each relevés, a complete list of species with indication of abundance in points o

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Dembicz, Iwona, and Jürgen Dengler. "Should we estimate plant cover in percent or on ordinal scales? II – Diversity indices." Vegetation Classification and Survey 6 (May 19, 2025): 133–40. https://doi.org/10.3897/VCS.144252.

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Question: We asked whether ordinal cover scales cause biases in biodiversity indices derived from vegetation plots and, if so, whether a different back-translation of ordinal categories could improve the situation. Methods: We took three empirical vegetation-plot datasets from different regions and habitat types with species cover estimated in percent. We applied three ordinal cover scales (13-step Londo, 7-step Braun-Blanquet and 5-step Hult-Sernander-Du Rietz) and back-transformed the resulting categories to percent (mid-point of the respective cover class). For each plot, we then calculated

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Brown, Leslie R., Itumeleng P. Magagula, and Alan S. Barrett. "A vegetation classification and description of Telperion Nature Reserve, Mpumalanga, South Africa." Vegetation Classification and Survey 3 (November 3, 2022): 199–219. http://dx.doi.org/10.3897/vcs.85209.

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Aims: This study identified, classified and mapped the different plant communities found on the Telperion Nature Reserve. Study area: Telperion Nature Reserve, Mpumulanga, South Africa. Methods: Using a 1:10,000 aerial photograph, Telperion was delineated into homogenous physiognomic-physiographic units. 294 sample plots (100 m2) were placed in a randomly stratified manner within identified homogenous units. Plant species present in sample plots were recorded and allocated a modified Braun-Blanquet cover abundance scale value. Sample plot data were captured into TURBOVEG and exported for editi

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Brown, Leslie R., Itumeleng P. Magagula, and Alan S. Barrett. "A vegetation classification and description of Telperion Nature Reserve, Mpumalanga, South Africa." Vegetation Classification and Survey 3 (November 3, 2022): 199–219. https://doi.org/10.3897/VCS.85209.

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Aims: This study identified, classified and mapped the different plant communities found on the Telperion Nature Reserve. Study area: Telperion Nature Reserve, Mpumulanga, South Africa. Methods: Using a 1:10,000 aerial photograph, Telperion was delineated into homogenous physiognomic-physiographic units. 294 sample plots (100 m<sup>2</sup>) were placed in a randomly stratified manner within identified homogenous units. Plant species present in sample plots were recorded and allocated a modified Braun-Blanquet cover abundance scale value. Sample plot data were captured into TURBOVEG and exporte

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Shovkun, Mikhail, Natalya Ivanova, Larisa Khanina, Michael Romanov, and Vasily Demidov. "Current vegetation data from the Prioksko-Terrasnyi Biosphere Reserve." Biodiversity Data Journal 9 (August 25, 2021): e71266. https://doi.org/10.3897/BDJ.9.e71266.

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Here we present the sampling event dataset that contributes to the knowledge of current vegetation of the Prioksko-Terrasnyi Biosphere Reserve (part of the UNESCO World Wide Network of Biosphere Reserves), Moscow Region, Russia. The Reserve is situated on the terraces of the Oka river in the zone of mixed coniferous forests.The dataset provides 269 relevés (9 174 associated occurrences) collected in 2019-2020. It contains representative information on plant communities in localities with assigned GPS coordinates sampled using the standard relevé method with Braun-Blanquet cover-abundance scale

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Holubec, V. "Monitoring of selected threatened species in Bohemia." Czech Journal of Genetics and Plant Breeding 46, Special Issue (2010): S21—S26. http://dx.doi.org/10.17221/694-cjgpb.

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The monitoring was based on 6 localities selected from within different regions of the Czech Republic. The vegetation was monitored during 2005 to 2008. Plant checklists have been made for each locality. Permanent plots of 9 m<SUP>2</SUP> in size have been marked and the phytosociological relevés have been recorded. The standard Braun-Blanquet scale of abundance/dominance was used. Biological diversity was evaluated using the Shannon, Simpson, and Evennes indexes. While some localities were stable and no threat was found (Radobýl), other localities were (to an extent) disturbed (Gr

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Kenar, Nihal, Fatoş Şekerciler, and Süleyman Çoban. "The phytosociology, ecology, and plant diversity of new plant communities in Central Anatolia (Turkey)." Hacquetia 19, no. 1 (2020): 1–22. http://dx.doi.org/10.2478/hacq-2019-0014.

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AbstractThe Central Anatolian vegetation has diverse site conditions and small-scale plant diversity. For this reason, identification of plant communities is important for understanding their ecology and nature conservation. This study aims to contribute the syntaxonomical classification of the Central Anatolian vegetation. The study area is situated among Güzelyurt, Narköy, and Bozköy (Niğde) in the east of Aksaray province of Central Anatolia in Turkey. The vegetation data were collected using the phytosociological method of Braun-Blanquet and classified using TWINSPAN. The ecological charac

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van Aardt, Andri C. van, J. C. Linde de de Jager, and Johan J. van van Tol. "Firebreaks and Their Effect on Vegetation Composition and Diversity in Grasslands of Golden Gate Highlands National Park, South Africa." Diversity 16, no. 7 (2024): 373. http://dx.doi.org/10.3390/d16070373.

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Southern African grasslands with a rich flora, shaped by fire, grazing, climate and geology, as well as playing a role in carbon sequestration, are becoming more important in conservation. Fire is often used as a management tool to improve vegetation and to protect property against uncontrolled fire. We therefore attempt to determine the effect consecutive burning has on vegetation. Paired plots along firebreaks were used to collect vegetation data using the Braun-Blanquet cover abundance scale. Soil samples were also collected to determine the impact of fire on below-ground nitrogen (N) and c

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Sokolova, T. A. "Large-scale geobotanical map of the Tuzla Spit and Tuzla Island (the Kerch Strait)." Geobotanical mapping, no. 2019 (2019): 57–67. http://dx.doi.org/10.31111/geobotmap/2019.57.

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During an ecological expertise the vegetation of Tuzla Spit and Tuzla Island, located in the middle part of the Kerch Strait (Fig. 1), was studied. This area is unique in terms of biological diversity and a presence of rare species (Ermolaeva et al., 2018). The study is based on 150 geobotanical relevés. Field data, topographic maps, and high-resolution satellite images were used in the vegetation mapping. The total area of the study is 383 hectares. There are the following hierarchical levels in the legend to the vegetation map: types of vegetation and classes of associations. A mapping unit

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Lysenko, Tatyana Mikhaylovna. "Steppe communities in the vicinity of Togliatti (Samara Region)." Samara Journal of Science 7, no. 4 (2018): 74–80. http://dx.doi.org/10.17816/snv201874113.

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The paper describes the study of steppe vegetation in the Samara Region. It contains results of the steppe communities field study conducted in 2014-2015 in the vicinity of Togliatti (Samara Region). Geobotanical relevs were made on standard sites for steppe vegetation. Projective covering of plant species in field conditions was estimated as a percentage and then converted to scores using B.M. Mirkins scale. The relevs are placed in the geobotanical database Vegetation of the Volga and Ural Basins and processed using the computer program JUICE. Bioindication studies were conducted using the I

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Willner, Wolfgang. "What is an alliance?" Vegetation Classification and Survey 1, no. () (2020): 139–44. https://doi.org/10.3897/VCS/2020/56372.

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The alliance is the basic unit of the EuroVegChecklist, and it often serves as the lowest rank in broad-scale vegetation surveys. However, there is hardly any literature about the concept and definition of this syntaxonomic rank, leading to uncertainty in its application. Here, I explore the original association concept of Braun-Blanquet, which was based on absolute character species, and I show that this concept is more or less identical with the units that we now call alliances. By also incorporating the concept of central syntaxa, I propose the following definition: "An alliance is a modera

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Pirini, Chrisoula, Vasiliki Karagiannakidou, and Savvas Charitonidis. "Abundance, diversity and distribution of macrophyte communities in neighboring lakes of different trophic states and morphology in north-central Greece." Archives of Biological Sciences 63, no. 3 (2011): 763–74. http://dx.doi.org/10.2298/abs1103763p.

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The role of aquatic vegetation in wetland ecosystems is closely related with their abundance, diversity and distribution, which in turn represents synergy of various environmental factors. The floristic composition of the aquatic vegetation in two neighboring lakes (Vegoritida and Petron) in north-central Greece was investigated by means of 160 relev?s, which were recorded using the Braun-Blanquet method. The analysis of relev?s based on TWINSPAN clustering showed the existence of 10 plant communities from the Lemnetea, Potametea, Phragmito-Magnocaricetea and Juncetea maritimi classes. The mos

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Willner, Wolfgang. "What is an alliance?" Vegetation Classification and Survey 1 (November 16, 2020): 139–44. http://dx.doi.org/10.3897/vcs/2020/56372.

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The alliance is the basic unit of the EuroVegChecklist, and it often serves as the lowest rank in broad-scale vegetation surveys. However, there is hardly any literature about the concept and definition of this syntaxonomic rank, leading to uncertainty in its application. Here, I explore the original association concept of Braun-Blanquet, which was based on absolute character species, and I show that this concept is more or less identical with the units that we now call alliances. By also incorporating the concept of central syntaxa, I propose the following definition: “An alliance is a modera

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17

Arepieva, L. A. "Communities with Ambrosia artemisiifolia L. in the Kursk Region." Vegetation of Russia, no. 36 (December 12, 2019): 41–58. http://dx.doi.org/10.31111/vegrus/2019.36.41.

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The purpose of this study is to characterize plant communities with Ambrosia artemisiifolia in the Kursk Region. The work is based on 32 relevés made by the author in the city of Kursk and few district centers of the Kursk Region in 2009–2018. Some information about natural conditions of the Kursk Region is given in Table 1. Classification is carried out according to Braun-Blanquet approach. The data were treated by IBIS 7.2 software package (Zverev, 2007). The names of the higher syntaxa follow to «Vegetation of Europe…» (Mucina et al., 2016). Synoptic tables include only species with a cons

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Chirilă, Simona Dumitrița, Kiril Vassilev, and Alexandru Sabin Bădărău. "Wide habitat preference found in a rare, regional endemic species: Iris brandzae Prodán (Iridaceae Juss., subgenus Limniris, series Spuriae) in Romania." Hacquetia 23, no. 2 (2024): 203–12. http://dx.doi.org/10.2478/hacq-2023-0009.

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Abstract Iris brandzae is one of the most threatened plant species in Romania. The current distribution of this species is very fragmented, and the population size has been reduced in the last 30 years. Information on the habitat preferences of the species has not been summarized yet. In this context, this study aimed to identify the habitat preferences of the species I. brandzae in Romania. The study was carried out in the NE (Moldova) and SE (Muntenia) regions of Romania. For the vegetation analysis, a total of 46 relevés were used. To classify the vegetation, we applied the hierarchical agg

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Ciosek, Marek T. "The ladybells Adenophora liliifolia (L.) Besser in forests near Kisielany (Siedlce Upland, E Poland)." Biodiversity: Research and Conservation, no. 3-4 (December 30, 2006): 324–28. https://doi.org/10.14746/biorc.2006.3-4.28.

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The ladybells Adenophora liliifolia in Poland was found in only 8 sites after 1980, so it is now classified as critically endangered (E). Since 2001 the species has been strictly protected and enlisted in the Habitat Directive of the EU. In 1995 in Kisielany, northwest of Siedlce, a rich population of Adenophora liliifolia was found. This study was undertaken to characterize phytosociologically the patches with ladybells and to analyse the structure of this opulation. One hundred specimens were randomly selected for population analysis carried out in 2005. Measurements were done on live plants

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Fomin, Valery V., Natalya S. Ivanova, Sergey V. Zalesov, and Anna P. Mikhailovich. "Pan-European Approaches to the Classification of Habitats, Vegetation and Forest Types." Lesnoy Zhurnal (Forestry Journal), no. 4 (July 5, 2022): 9–24. http://dx.doi.org/10.37482/0536-1036-2022-4-9-24.

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The article describes the approaches and features of classification of forests, habitats and vegetation at the Pan-European level on the example of the classification of European forest types (EFT), the EUNIS habitat classification and the Europe vegetation classification created by the phytosociologists of the European Vegetation Survey (EVS). The forest type in the EFT classification is a large forest vegetation unit distinguished within biogeographic regions by the similarity of forest site conditions, structure and productivity of the plantation, and the degree of anthropogenic transformat

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Štefanić, Edita, Vesna Kovačević, and Slavica Antunović. "Decline of arable flora diversity in Istria (from the year 2005 to the year 2017)." Zbornik Veleučilišta u Rijeci 6, no. 1 (2018): 385–98. http://dx.doi.org/10.31784/zvr.6.1.25.

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Changes in floristic composition of weed flora were assessed comparing two phytocoenological surveys carried out during vegetation seasons in 2005 and in 2017 on the Istrian Peninsula. A total of 50 fields (row crops, cereals, alfalfa fields, orchards/vineyards and ruderal areas) were surveyed for each of the sampling time using Braun-Blanquet cover-abundance scale. Altogether 175 vascular plant species were recognized in both investigations. The most abundant species in 2005 were Avena fatua, Setaria verticilata, Lolium multiflorum and Veronica persica. In the recent survey these species beca

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Semenishchenkov, Yu A., and R. S. Korsikov. "Comparative analysis of two approaches to large-scale mapping of forest vegetation in the Southern Nechernozemye of Russia." Geobotanical mapping, no. 2020 (December 2020): 3–23. http://dx.doi.org/10.31111/geobotmap/2020.3.

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The results of the comparative analysis of traditional forest typology data and the data of floristic classification by the J. Braun-Blanquet approach for large-scale mapping of forest vegetation from the Southern Nechernozemye of Russia are presented. 3 model forest areas located in the forestries in borders of different botanic-geographical districts with specific climatic and edaphic conditions have been chosen to make the comparative analysis of cartographic materials (Bryansk and Smolensk Regions). A comparison of existing afforestation plans and created geobotanical maps demonstrates the

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Štefanić, Edita, Vesna Kovačević, Lea Jakovljević, Urška Kosić, Dinko Zima, and Alka Turalija. "Weed Community in a Conventionally-Grown Olive Orchard Vs. Weed Community in Consociation with Pyrethrum (Tanacetum cinerariifolium (Trevir.) Sch. Bip.)." Poljoprivreda 27, no. 1 (2021): 30–36. http://dx.doi.org/10.18047/poljo.27.1.4.

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On the experimental plots of the Institute of Agriculture and Tourism in Poreč, weed communities were analyzed in a conventionally‐grown olive orchard and in consociation with pyrethrum. Phytocenological surveys were conducted in March, June, and September using the Braun-Blanquet Cover Abundance Scale. Altogether, 54 species of vascular plants were recognized in both orchards. However, in a conventionally‐grown olive orchard, 27 were identified, whereas 42 weed species were identified in consociation with pyrethrum. Only 15 weeds were common to both orchards. Between both olive orchards, sign

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Fazekaš, Juraj, Danica Fazekašová, Ondrej Hronec, Eva Benková, and Martin Boltižiar. "Contamination of soil and vegetation at a magnesite mining area in Jelšava-Lubeník (Slovakia)." Ekológia (Bratislava) 37, no. 2 (2018): 101–11. http://dx.doi.org/10.2478/eko-2018-0010.

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AbstractThis paper is focused on the impacts of alkaline and metal deposition on soil and vegetation in the immission field of magnesium factory Jelšava-Lubeník (Slovakia). Soil samples and the foliage of vegetation were obtained from the Jelšava-Lubeník area with specific alkaline pollutants. The examined area is one of the most devastated regions of Slovakia. From the point of view of environmental regionalization, it belongs to an environmentally damaged area of Category 3. The total content of heavy metals in the soil and vegetation (Pb, Zn, Cr, Mn, Mg) were determined by atomic absorption

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Nowak, Arkadiusz, Marcin Nobis, Sylwia Nowak, et al. "Syntaxonomy and ecology of thermophilous deciduous open woodlands and scrub vegetation in Tajikistan (Middle Asia)." Dendrobiology 87 (March 16, 2022): 47–68. http://dx.doi.org/10.12657/denbio.087.004.

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In this paper we present the first syntaxonomic classification for the thermophilous open wood and scrub vegetation in Tajikistan with some remarks on its environmental gradients. Altogether 143 relevés were sampled between 2014–2021 using the seven-degree cover-abundance scale of Braun-Blanquet. They were classified by the modified TWINSPAN method with the use of the four step interval scale with cutoff levels of 0%, 2%, 5% and 10% and total inertia as a measure of cluster heterogeneity. Diagnostic species were identified using the phi coefficient as a fidelity measure. Detrended Corresponden

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Pukacz, Andrzej, and Mariusz Pełechaty. "Spatial structure of vegetation in a small charophyte dominated lake." Biodiversity: Research and Conservation 29, no. 1 (2013): 97–104. http://dx.doi.org/10.2478/biorc-2013-0001.

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Abstract The aim of the paper was to recognize the current spatial structure and organization of vegetation and the diversity of charophytes on an ecosystem scale of a small, outflow Lake Jasne (Western Poland). The lake is characterized by limited anthropogenic pressure and forested catchment basin. The study was performed in the vegetative season 2010. The vegetation was studied along transect, using the mid-European Braun-Blanquet method of phytosociological relevés. Additionally, basic physical-chemical parameters were measured, to characterize habitat conditions of the lake. The results o

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Nowak, Arkadiusz, Marcin Nobis, Sylwia Nowak, Marcin Kotowski, and Sebastian Świerszcz. "Phytosociological survey of juniper wood vegetation in Tajikistan (Middle Asia)." Dendrobiology 88 (August 24, 2022): 17–37. http://dx.doi.org/10.12657/denbio.088.002.

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The paper presents the first syntaxonomic classification for juniper wood communities in Tajikistan with some remarks on their environmental gradients. A total of 119 relevés were sampled between 2015 and 2021 using the seven-degree Braun-Blanquet cover-abundance scale. They were classified by a modified TWINSPAN method. Diagnostic species were identified using phi coefficient as a fidelity measure. Detrended Correspondence Analysis (DCA) was used to determine relationships between samples, vegetation units and major gradients in species composition. Plant communities have been divided into tw

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Štefanić, Edita, Vesna Kovačević, Slavica Antunović, et al. "Floristic Biodiversity of Weed Communities in Arable Lands of Istria Peninsula (From 2005 to 2017)." Ekológia (Bratislava) 38, no. 2 (2019): 166–77. http://dx.doi.org/10.2478/eko-2019-0013.

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AbstractThis paper analyses the floristic biodiversity of weed communities in the arable lands of the Istrian peninsula during a twelve year period (2005–2017). A total of 50 fields were surveyed for each sampling time using the seven-degree Braun-Blanquet cover abundance scale in the following agricultural categories: a) permanent crops (vineyards/olive groves), b) alfalfa fields, c) cereals, d) row crops and e) ruderal areas. The taxonomic identification was performed during the full development of vegetation, for cereals in June and July, and for the rest – in August and September. A total

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Petriccione, Bruno, and Alessandro Bricca. "Thirty years of ecological research at the Gran Sasso d'Italia LTER site: climate change in action." Nature Conservation 34 (May 3, 2019): 9–39. https://doi.org/10.3897/natureconservation.34.30218.

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Since 1986, vegetation monitoring of alpine plant communities has been performed at the Gran Sasso d'Italia LTER site (https://deims.org/c0738b00-854c-418f-8d4f-69b03486e9fd) in the Central Apennines, through phytosociological relevés and abundance and coverage estimation of the vascular flora at fine scale. The monitoring activities for abiotic parameters regard air and soil temperatures, rainfall, snowfall and snow cover persistence. A comparative analysis of changes in species composition, life forms, life strategies and morpho-functional types allowed recognition of dynamical processes (fl

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Veres, Katalin, Zsolt Csintalan, Bence Kovács, and Edit Farkas. "Factors at multiple scales influence the composition of terricolous lichen communities in temperate semi-arid sandy grasslands." Lichenologist 53, no. 6 (2021): 467–79. http://dx.doi.org/10.1017/s0024282921000360.

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AbstractInland dune ecosystems are rich in terricolous lichen species. However, these communities are sensitive to human activities, both locally and globally. Since terricolous lichens have a dominant role in semi-arid sandy grasslands, it is important to explore the composition of their communities and the environmental factors affecting them. We studied the structure of the terricolous lichen assemblages of calcareous grassland in an inland duneland ecosystem by comparing the lichen communities of arid and humid dune sides on two sites with different disturbance histories. Microcoenological

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Kosakowska, Olga, Katarzyna Bączek, Jarosław L. Przybył, Ewelina Pióro-Jabrucka, and Zenon Węglarz. "Chemical variability of common skullcap (Scutellaria galericulata L.) wild growing in the area of eastern Poland." Herba Polonica 62, no. 3 (2016): 7–19. http://dx.doi.org/10.1515/hepo-2016-0013.

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Summary Introduction. In the group of plants revealing adaptogenic activity, species belonging to Scutellaria genus are considered to be the most important ones. Common skullcap (Scutellaria galericulata L.) is less known species from this genus, growing wild in Poland in wet habitats. Its herb has been used in the past as a sedative and diuretic agent. Objective. The aim of the study was to determine the variability of common skullcap in terms of the accumulation of flavonoids in the herb. Methods. The objects of the study were 17 common skullcap populations growing wild in eastern Poland. At

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Yulianto, Roni, Amam, Pradiptya Ayu Harsita, and Mochammad Wildan Jadmiko. "Selected Dominance Plant Species for Increasing Availability Production of Cattle Feed." E3S Web of Conferences 142 (2020): 03001. http://dx.doi.org/10.1051/e3sconf/202014203001.

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Production and availability of plant species have an essential role as cattle feed. Feed supplies for animal depend on plant species to produce more preferred types of quantity and quality. The purpose of this study was to select dominance of plant species to increasing productivity and develop grazing area. The study was conducted at field farming with large area ± 1.2 ha, consists of 6 cows, and 10 goats in Bondowoso. Identification of species composition was conducted following method Braun-Blanquet scale using a line transect of 0-70 m at every 10 m interval to determine the adaptation of

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Wieland, Ronald G., and M. J. A. Werger. "Land types and vegetation in the Luuq district of south-western Somalia." Journal of Tropical Ecology 1, no. 1 (1985): 65–87. http://dx.doi.org/10.1017/s0266467400000092.

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ABSTRACTA land use survey involving land typing and vegetation classification was conducted within the Luuq District Refugee Area (200,000 ha) in south-western Somalia. Average rainfall and annual temperature of the area are 310 mm and 30.5° C. The area is composed of limestone and basalt uplands, gypsiferous and alluvial interplains, and ancient and recent alluvial terraces of the Juba River.Land types were identified by aerial photo survey and ground observation and mapped on a 1:100,000 scale LandSat Satellite (colour) Image. Soil types were classified according to the method used by the US

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Gofman, O. P. "Results of studies of post pyrogenic vegetational associations' renewal of feather fescue grass steppe «Askania Nova»." Ecology and Noospherology 26, no. 3-4 (2015): 30–41. http://dx.doi.org/10.15421/031518.

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The results of studies of post pyrogenic vegetational associations' renewal of the feather fescue grass steppe that is under protection of the Biosphere Reserve «Askania-Nova» are given in the paper. The fire's effect is one of most ancient and powerful factors that forms and determines the development of a steppe ecosystem. The steppe fires are rather often phenomenon at the natural core area of the Biosphere Reserve «Askania-Nova» due to the following factors: 1) availability of long dry period in summer; 2) a plane where any natural obstacles for spreading of the fire are absent; 3) steppe

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Vacek, S., and K. Matějka. "Vegetation changes in beech and spruce stands in the Orlické hory Mts. in 1951–2001." Journal of Forest Science 49, No. 10 (2012): 445–73. http://dx.doi.org/10.17221/4718-jfs.

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Plant cenological surveys on the basis of Braun-Blanquet&rsquo;s seven-point scale were made on 34 research plots in the course of studies of vegetation changes in beech and spruce stands in the Orlick&eacute; hory Mts. over period of 1951&ndash;2001. The acquired data were processed not only by traditional plant coenological methods but also by numerical analyses (agglomerative and divisive classification, ordination, species diversity). The results document marked changes that occurred in species-rich spruce communities of the association Athyrio alpestre-Piceetum (Aa-P) as well

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36

Eke-John, H., V. A. Owoleke, and G. W. Komi. "The effect of crude oil pollution on macrophyte assemblage in Kporghor River, southern Nigeria." Scientia Africana 21, no. 1 (2022): 223–32. http://dx.doi.org/10.4314/sa.v21i1.19.

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A study of the effects of crude oil pollution on macrophyte assemblage was carried out in Kporghor River, Rivers State. Standard procedures were used in data collection. Temperature, total dissolved solutes, dissolved oxygen, pH and electrical conductivity were taken in-situ using Extech multi-parameter equipment while biological oxygen demand was incubated in a BOD bottle and determined using standard methods. Aquatic macrophytes were sampled with 0.5m × 0.5m quadrant and estimates of the percentage cover of each species inside the 0.5 × 0.5 m quadrant was transformed onto a scale based on Br

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Nowak, Sylwia, Sebastian Świerszcz, Marcin Nobis, Grzegorz Swacha, and Arkadiusz Nowak. "Chionophilous vegetation in the high alpine and subnival belts of the Pamir-Alai and western Tian Shan Mts. (Tajikistan and Kyrgyzstan)." Acta Societatis Botanicorum Poloniae 93 (August 16, 2024): 1–26. http://dx.doi.org/10.5586/asbp/190173.

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The aim of this study was to complete a syntaxonomic scheme for the high alpine and subnival vegetation in the Pamir-Alai and western Tian Shan Mts. 303 relevés were sampled in 2013–2022 using the seven-degree cover-abundance scale of the Braun-Blanquet approach. The dataset was classified using the <i>k</i>-means algorithm. Diagnostic species were determined using the <i>phi</i> coefficient as a fidelity measure. Differences between vegetation units were visualized using non-metric Multidimensional Scaling (NMDS). Fifteen associations (13 newly described) and three ran

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38

Jelinčić, Antun, Joso Vukelić, and Dora Papković. "Phytosociological research into the Illyrian oak–hornbeam forest on the limestone cliffs of Kupa River canyon (Kamanje, West-Central Croatia)." Šumarski list 148, no. 1-2 (2024): 7–18. http://dx.doi.org/10.31298/sl.148.1-2.1.

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In this paper, we present 14 relevés of oak-hornbeam forest from the limestone cliffs of Kupa River canyon in Kamanje, West-Central Croatia. The investigated forest is part of the Natura 2000 ecological network, and it represents one of the rare remnants of climax forest in the area that is not highly influenced by anthropogenic management. Plant community composition was recorded using the six-degree Braun-Blanquet scale, and its relation to similar forests studied by other authors was assessed using agglomerative hierarchical clustering. Because of the abundance of limestone rocks and cons

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Shushpannikova, G. S., and S. M. Yamalov. "Meadow vegetation of the floodplains of the Vychegda and Pechora rivers. Order Arrhenatheretalia R. Tx. 1931." Vegetation of Russia, no. 25 (2014): 89–115. http://dx.doi.org/10.31111/vegrus/2014.25.89.

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The present study continues a series of publications of the authors on diversity of the meadow vegetation in the floodplains of the Vychegda and Pechora rivers and their tributaries (Komi Republic). The floristic classification of wet meadows of the order Molinietalia Koch 1926 was published early (Shushpanikova, Yamalov, 2013). The results of floristic classification of meadow vegetation belonging to the order Arrhenatheretalia R. Tx. 1937 are discussed in this article. Analysis was based on 383 original relevés of the meadow vegetation of the order Arrhenatheretalia made in accordance with p

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Nowak, Arkadiusz, Sebastian Świerszcz, Sylwia Nowak, and Marcin Nobis. "Classification of tall-forb vegetation in the Pamir-Alai and western Tian Shan Mountains (Tajikistan and Kyrgyzstan, Middle Asia)." Vegetation Classification and Survey 1 (December 30, 2020): 191–217. http://dx.doi.org/10.3897/vcs/2020/60848.

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Aims: To complete the syntaxonomic scheme for tall-forb vegetation of the montane and alpine belts in the Pamir-Alai and western Tian Shan Mountains in Tajikistan and Kyrgyzstan with some remarks on its environmental predictors. Study area: Middle Asia: Tajikistan and Kyrgyzstan. Methods: A total of 244 relevés were sampled in 2013–2019 using the seven-degree cover-abundance scale of the Braun-Blanquet approach. These were classified with a modified TWINSPAN algorithm with pseudospecies cut-levels 0%, 5% and 25%, and total inertia as a measure of cluster heterogeneity. Diagnostic species were

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Tsheboeng, Gaolathe. "Classification of riparian woody plant communities along the Thamalakane River in northwestern Botswana." Botswana Journal of Agriculture and Applied Sciences 14, no. 1 (2020): 47–59. http://dx.doi.org/10.37106/bojaas.2020.85.

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There is still paucity of information on the species composition of woody species along the Thamalakane River, northern Botswana, which may limit efforts aimed at conserving riparian woodland species. The current study was aimed at classifying the vegetation, and determining the species composition and diversity of the riparian woodland plant communities along the Thamalakane River. It was hypothesized that there will be no different woodland communities along the Thamalakane River. The 71 sampling plots measured 1000m2 (20m × 50m). In each plot,the percentage cover for each species was estima

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Fazekašová, Danica, Gabriela Barančíková, Juraj Fazekaš, et al. "Chemical and Phytocoenological Characteristics of Two Different Slovak Peatlands." Plants 10, no. 7 (2021): 1290. http://dx.doi.org/10.3390/plants10071290.

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This paper presents the results of pedological and phytocoenological research focused on the detailed research of chemical parameters (pH, organic carbon, and nutrients), risk elements (As-metalloid, Cd, Co, Cr, Cu, Ni, Pb, and Zn), and species composition of the vegetation of two different peatlands on the territory of Slovakia—Belianske Lúky (a fen) and Rudné (a bog). Sampling points were selected to characterize the profile of the organosol within the peatland, the soil profile between the peatland and the agricultural land, and the soil profile of the outlying agricultural land, which is u

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43

Nowak, Arkadiusz, Sylwia Nowak, Marcin Nobis, and Agnieszka Nobis. "Vegetation of rock clefts and ledges in the Pamir Alai Mts, Tajikistan (Middle Asia)." Open Life Sciences 9, no. 4 (2014): 444–60. http://dx.doi.org/10.2478/s11535-013-0274-x.

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AbstractThe paper presents the results of phytosociological research conducted on the vegetation of rock clefts and ledges in the Pamir-Alai Mountains (Tajikistan, Middle Asia). During the field studies, done in 2010–2012, 101 phytosociological relevés were taken. Plant species were recorded according to the Braun-Blanquet cover-abundance scale. Communities of calcareous rock clefts and ledges with small soil amounts from several ranges (Zeravshan Mts, Hissar Mts, Hazratishokh Mts, Darvaz Mts, Rushan Mts and Vanch Mts), inhabiting mainly the alpine and subnival zone, have been described. A syn

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Ciosek, Marek Tadeusz, Janusz Krechowski, Roman Sikorski, Agata Trębicka, Katarzyna Piórek, and Barbara Przybylska. "The Twinflower (Linnaea borealis L.) in the northern part of the Południowopodlaska Lowland." Forest Research Papers 76, no. 2 (2015): 113–21. http://dx.doi.org/10.1515/frp-2015-0011.

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Abstract Linnaea borealis, the twinflower, is considered a critically endangered species in the Południowopodlaska Lowland. The disappearance of the twinflower is mainly caused by habitat changes resulting from forest management, but also light deficiency due to the increase in canopy cover and growth of the shrub layer (processes of succession). The aim of the paper is to present the actual distribution and phytosociological characteristics of L. borealis in the northern part of the Południowopodlaska Lowland. In this region, only three out of ten known areas of occurrence (Werchliś, Serpelic

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45

Nowak, Arkadiusz, Sebastian Świerszcz, Sylwia Nowak, and Marcin Nobis. "Vegetation of hot semi-deserts, badlands and related ruderal vegetation in western Tajikistan (Middle Asia)." Acta Musei Silesiae, Scientiae Naturales 73, no. 1 (2024): 40–68. http://dx.doi.org/10.2478/cszma-2024-0005.

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Abstract Aims: To complete the syntaxonomic conspectus of the vegetation of Tajikistan, hot semi-deserts and ruderal vegetation, mainly of the lowlands and montane belt, were surveyed with some remarks on their environmental predictors. Location: Tajikistan. Methods: A total of 143 relevés were sampled in 2022 using the seven degree cover-abundance scale of Braun-Blanquet. All these samples were classified by unsupervised k-means analysis with cut-offs of 0%, 5%, 25% and Hellinger transformation. Diagnostic species were identified using the phi coefficient as a measure of fidelity. Non-metric

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46

Nowak, Arkadiusz, Sebastian Świerszcz, Sylwia Nowak, Agnieszka Nobis, Ewelina Klichowska, and Marcin Nobis. "Conspectus of the vegetation types of Tajikistan and adjacent areas with special focus on phytosociological classes." Acta Societatis Botanicorum Poloniae 93 (October 11, 2024): 1–16. http://dx.doi.org/10.5586/asbp/191675.

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Vegetation classification is a tool for organizing the patterns and diversity of plant communities. It is used in nature conservation, and helps to understand the role of vegetation in the biosphere. Given the rapidly diminishing opportunity to understand the vegetation diversity of Tajikistan located in the Middle Asian region, phytosociological surveys using the floristic-ecological approach and the Braun-Blanquet cover-abundance scale were undertaken in 2006. Aer 18 years of research, with a total of 55 research expeditions to Tajikistan, Kyrgyzstan, and Uzbekistan, it is time to summarise

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47

Świerkosz, Krzysztof, and Kamila Reczyńska. "VESTA – resurvey of natural, non-forest vegetation (Central Europe)." Vegetation Classification and Survey 3 (November 14, 2022): 221–22. http://dx.doi.org/10.3897/vcs.96011.

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“VESTA - resurvey of natural, non-forest vegetation (Central Europe)” is a thematic, resurvey database focused on documentation of changes in natural, non-forest communities. Currently, the database includes 549 relevés (231 replots for 84 sites) corresponding to the classes Asplenietea trichomanis (incl. Polypodietea), Koelerio-Corynephoretea (rocky grasslands), Loiseleurio-Vaccinietea and Betulo carpaticae-Alnetea viridis. The project is continuous in character. It is based on the phytosociological relevés from own field studies which have been carried out in the Sudetes Mts. and their footh

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48

Masresha Kassa, Getinet, Addis Getnet Deribie, and Getnet Chekole Walle. "Woody Species Composition, Structure, and Regeneration Status of Gosh-Beret Dry Evergreen Forest Patch, South Gondar Zone, Northeast Ethiopia." International Journal of Forestry Research 2023 (April 28, 2023): 1–16. http://dx.doi.org/10.1155/2023/5380034.

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Owing to its variable topographic features, Ethiopia is endowed with rich biological resources. However, nowadays, these vital resources, mainly forests, are declining alarmingly, largely, due to agricultural expansion and energy consumption. This study was conducted at Gosh-Beret forest with the objective of investigating the status of forest species. Fifty-one main plots, spaced at a 100 m interval, were laid on north-south oriented transects. Within the main plots, five subplots, at each corner and center, were set to collect data for juveniles. In each plot, individuals of each woody speci

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49

Nowak, Arkadiusz, Sebastian Świerszcz, Sylwia Nowak, and Marcin Nobis. "Classification of tall-forb vegetation in the Pamir-Alai and western Tian Shan Mountains (Tajikistan and Kyrgyzstan, Middle Asia)." Vegetation Classification and Survey 1, no. () (2020): 191–217. https://doi.org/10.3897/VCS/2020/60848.

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Aims: To complete the syntaxonomic scheme for tall-forb vegetation of the montane and alpine belts in the Pamir-Alai and western Tian Shan Mountains in Tajikistan and Kyrgyzstan with some remarks on its environmental predictors. Study area: Middle Asia: Tajikistan and Kyrgyzstan. Methods: A total of 244 relevés were sampled in 2013–2019 using the seven-degree cover-abundance scale of the Braun-Blanquet approach. These were classified with a modified TWINSPAN algorithm with pseudospecies cut-levels 0%, 5% and 25%, and total inertia as a measure of cluster heterogeneity. Diagnostic species were

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50

Świerkosz, Krzysztof, and Kamila Reczyńska. "VESTA – resurvey of natural, non-forest vegetation (Central Europe)." Vegetation Classification and Survey 3 (November 14, 2022): 221–22. https://doi.org/10.3897/VCS.96011.

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Abstract:

"VESTA - resurvey of natural, non-forest vegetation (Central Europe)" is a thematic, resurvey database focused on documentation of changes in natural, non-forest communities. Currently, the database includes 549 relevés (231 replots for 84 sites) corresponding to the classes Asplenietea trichomanis (incl. Polypodietea), Koelerio-Corynephoretea (rocky grasslands), Loiseleurio-Vaccinietea and Betulo carpaticae-Alnetea viridis. The project is continuous in character. It is based on the phytosociological relevés from own field studies which have been carried out in the Sudetes Mts. and their footh

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