scholarly journals A SURVEY OF VASCULAR PLANT SPECIES IN THE DRY SEASON, CAM MOUNTAIN, AN GIANG PROVINCE

2018 ◽  
Vol 54 (2A) ◽  
pp. 64
Author(s):  
Nguyen Thi Hai Ly

The survey which was conducted in the dry season (from February to April) in Cam Mountain, reported 49 plant species belonged to 45 genera and 29 families. These species include 10 big wood species (G) (20.4 %), 14 small wood species (g) (28.6 %), 7 bush species (17.2 %), 9 creeper species (18.4 %) and 9 herbaceous species (18.4 %). There are 33 species used for herbal medicines, 12 species for wood fire, 11 species for fruit, 10 species for household tools and 9 species for food. Pterocarpus macrocapus Kurz is the species that listed in Viet Nam Red Data Book (2007). The average value of Margalef (d) and Pielou (J’) indexes are 2.45 ± 0.37 and 0.94 ± 0.02, respectively. There are 54.5 % quadrates which (d) and (J’) indexes are higher than Margalef (d) and Pielou (J’) indexes. The Shannon – Weiner (H’) index of 63.6 % quadrats is higher than the average value of Shannon - Weiner index (1.94 ± 0.19). The number of species at quadrats O1T1, O3T1 and O1T2 are more diverse than other quadrats. The transect 1 (T1) to the east is more diverse than the transect 2 to the west of Cam forest.

1997 ◽  
Vol 24 (3) ◽  
pp. 207-209 ◽  
Author(s):  
ALF OREDSSON

In the beautifully-illustrated book of rare and threatened plants of Greece (Phitos et al. 1995), the selection of species is based strictly on the four World Conservation Union (IUCN) categories of ‘extinct’, ‘endangered’, ‘vulnerable’ and ‘rare’ (Lucas & Synge 1978). The Swedish ‘red data’ book of plants (Aronsson et al. 1995) adds ‘care-demanding species’ to the list. Five percent of the total number of vascular plant species in Greece are included in the Greek book, while 23% of the vascular plant species in Sweden are in the Swedish book. This latter percentage may appear to be sufficiently large, but is it?


2021 ◽  
Vol 9 ◽  
Author(s):  
Oxana Cherednichenko ◽  
Tatiana Gavrilova

Here we present the sampling event dataset that contributes to studying the flora of grasslands in Central Forest State Nature Biosphere Reserve (part of the UNESCO World Network of Biosphere Reserves), Tver Oblast, Russia. The Reserve is located in the SW part of the Valdai Upland within the main Caspian-Baltic watershed of the Russian plain (Latitude: 56° 26' – 56° 39' N, Longitude: 32° 29' – 33° 01' E). The territory of Central Forest Reserve belongs to the subzone of subtaiga. The dataset includes the occurrences of vascular plant species in four types of grasslands from 209 vegetation plots (8,506 associated occurrences), collected in 2013-2014. The dataset described in this paper has never been published before. As the grasslands in Central Forest State Nature Biosphere Reserve are relatively unstudied, we are providing a new comprehensive dataset on the vascular plant species occurrences in the grasslands of the Reserve. The dataset contains representative information on floristic composition of plant communities in localities with assigned GPS coordinates. As the vegetation of the Reserve is typical of the subtaiga subzone, the results of analysing this dataset can be useful for grassland management in the whole subtaiga subzone. During this study, we found one vascular plant species included in the Red Data Book of the Russian Federation, three species from the Red Data Book of Tver Oblast, as well as 10 alien vascular plant species for the Reserve. These data, especially, the occurrences of protected and alien species, contribute to our knowledge of species composition of the grasslands of the Reserve.


1970 ◽  
Vol 18 (1) ◽  
pp. 81-91 ◽  
Author(s):  
Haseeb Md Irfanullah

In the light of important developments in biodiversity conservation in the global and national arenas over the last decade (2001-2010), this paper appraises the progress in identifying threatened vascular plant species of Bangladesh as a primary step of species diversity conservation. It is argued that, as per the IUCN Red List categories and the Volume 1 of ‘Red Data Book of Vascular Plants of Bangladesh’ published in 2001, only four angiosperm species are threatened (1 Critically Endangered (CR), 1 Endangered (EN), 2 Vulnerable (VU)) in Bangladesh, not 106 vascular species. This account also records that, accordingly to the ‘Encyclopedia of Flora and Fauna of Bangladesh’ (2007-2009; Volumes 5-12), 36 pteridophyte species (all VU; 18.46% of 195 recorded species), 1 gymnosperm species (EN; 14.29% of 7 species), and 449 angiosperm species (30 CR, 126 EN, 293 VU; 12.43% of 3,611 recorded species) are threatened in the country. The paper discusses and explores the importance, limitations and opportunities for red listing of threatened plants of Bangladesh. This account further advocates for a well-planned initiative to effectively complete the Red List of threatened plant species of the country by considering appropriate, established, updated assessment methods; following collaborative approach; and capitalizing on the progress made so far. Such steps may subsequently contribute to the species diversity conservation endeavours in Bangladesh.Keywords: Angiosperm; Biodiversity; Convention on Biological Diversity; Red Data Book; Red List; Vascular plants.DOI: 10.3329/bjpt.v18i1.7844Bangladesh J. Plant Taxon. 18(1): 81-91, 2011 (June)


2020 ◽  
Vol 28 (1) ◽  
pp. 81-91
Author(s):  
D. A. Davydov ◽  
L. M. Gomlya

Current progress in botany requires new claims for floristic research. Now the latter is not a simple species inventory of a separate local or regional flora but it needs coordination with recent results of critical taxonomic, nomenclatural and molecular phylogenetic investigations. Based on the fact that detailed research on steppes as a zonal type of vegetation in the Forest-Steppe zone of Ukraine is very important for preservation of current steppe territories, the authors studied several territories with steppe vegetation near Poltava town (Poltava region, Ukraine). The key steppe territories found are situated near Abazivka, Rozhayivka, Kostochky, Buhayivka, Machukhy, Ivonchentsi and Zhuky villages. Data about steppe flora from only the first territory located between Abazivka and Rozhayivka villages including “Rozhayivskyi” local botanical reserve were early reported in literature sources while data about steppe vegetation of the other areas has never been published in detail. The full list of 401 vascular plant species found on these steppe territories with the frequency of distribution, major synonym names and references to current taxonomic papers for separate species are proposed. One of these species (Hemerocallis fulva (L.) L.) is a new alien for Poltava region. Taxonomy for all species was critically revised, nomenclature of several taxa (Dichoropetalum carvifolia (Vill.) Pimenov & Kljuykov, Erophila verna (L.) DC., Campanula canescens (Waldst. & Kit.) Roth) is discussed in detail. The name “Dichoropetalum carvifolium-chabraei (Crantz) Soldano et al.” is an invalid designation based on trinominal and must be rejected. The names Selinum chabraei Jacq. ex Murray, Peucedanum euphimiae Kotov and Hemerocallis lilio-asphodelus var. fulva L. were lectotypified. The studied steppe territories have the great significance in the sozological aspect, they include 32 rare steppe plant species (seven from the Red Data Book of Ukraine and 25 from the list of locally rare plants within Poltava region) so the primary task for further research is to organize their protection as the most valuable steppe areas and the monitoring of their condition in the future.


2018 ◽  
Vol 7 (4) ◽  
pp. 14-19
Author(s):  
Elena Anatolyevna Borisova ◽  
Dmitriy Sergeevich Markov ◽  
Anton Aleksandrovich Kurganov

The paper deals with the ecological research of Ivanovo Region natural monument Lake Vazal (reservoir in town Yuzha). The reservoir is located in Yuzha of the Ivanovo Region, it was founded in 1859 by the overlapping a small river Vazovka with dam filling a formed basin with water. This reservoir was named Lake Vazal. The reservoir was recognized as a natural monument of regional value in 1975. The author describes different parameters of the lake and presents a bathymetric schema of the bottom. The relief of the lake banks is characterized. There are sod-shallow podzolic medium-power, medium sod medium- and low-humic sandy soils on the water-ice scurf on the banks of the lake. The water analysis is made. Meadow, marshy, aquatic and hygrophytic plant communities of this protected area are described briefly. The author has registered 277 vascular plant species from 3 divisions, 4 classes, 64 families and 180 genera, among them 3 species ( Sanguisorba officinalis , Lembotropis nigricans and Geranium palustre ) are included to the Ivanovo Region Red Data Book. 6 species are rare for the region flora. Populations of rare plant species are briefly characterized. Examples of alien and invasion plant species are given. The lake has a great hydrological and environment-forming value and forms a specific microclimate. The square of specially protected natural area is 42 hectares; the square of secured zone is 67,3 hectares.


2016 ◽  
Vol 5 (1) ◽  
pp. 14-18
Author(s):  
Elena Anatol’evna Borisova

In the article the floristic data of Lukh, one of the ancient Ivanovo region settlements, are given. The present Lukh settlement flora consists of 402 vascular plant species from 4 classes, 76 families and 255 genera. Compositae - 53 species (13,2%), Rosaceae - 39 species (9,7%), Poaceae - 27 species (6,9%), Fabaceae - 23 species (5,7%), Cruciferae - 18 species (4,2%) are leading families of the flora. The basis of biomorphological structure of the Luch flora is made up by the perennial grass plants (233 species; 57,9%), arboreous plants include 60 species (14,9%), among which 23 species are trees, 33 species are shrubs. Geographical analysis ascertained prevalence of native species. The native component of Lukh flora comprises 247 species (61,6%), the аlien component - 153 species (38,4%). The adventivity index is 0,38 which is typical for the small towns and large settlements of the Upper Volga region. 2 rare species ( Gerntiana pneumonanthe , Populus nigra ) included in the regional red data book, some native ( Thelypteris palustris, Juniperus communis , Dactulorhiza fuchii, Platanthera bifolia, Convallaria majalis, Carex pilosa, Trollius earopaeus, Daphne mezerum) and alien (Atriрlex patens, Symphytum x uplandicum, Hesperis matronalis, Veronica persica, Zizania latifolia) rare plant species are briefly characterized


2000 ◽  
Vol 60 (1) ◽  
pp. 129-145 ◽  
Author(s):  
M. A. BATALHA ◽  
W. MANTOVANI

A natural vegetation area, with 1269 ha, composed mainly by cerrado, located at Santa Rita do Passa Quatro Municipality, São Paulo State, southeastern Brazil (21°36-39'S, 47°36-38'W), was studied. From September 1995 to February 1997, a floristic survey was carried out, when all vascular plant species at reproductive stage were collected. The flowering and fruiting patterns of the community were studied, comparing the herbaceous and the woody species. In the herbaceous component, 239 species were found and, in the woody one, 108 species. The woody species flowered mainly at the beginning of the rainy season, while the herbaceous ones produced flowers generally at the end of that season. The proportion of anemo and autochorous species was greater in the herbaceous component. The zoochorous ones, on the contrary, were more frequent in the woody component. At the dry season, when their dispersion is more efficient, the proportion of anemo and autochorous species producing fruits was higher. During the rainy season, when their fruits become attractive for longer time, the zoochorous species fruited more intensely.


2021 ◽  
Vol 24 (2-3) ◽  
pp. 140-143
Author(s):  
T.A. Rubtsova ◽  
V.A. Gorelov

The paper provides brief information on the formation of the list of vascular plant species that need protection in the Jewish Autonomous Region. The author also reports about the current species composition in the regional Red Data Book. It is for the first time that a distribution and concentration of rare plant species in the region have been analyzed. It is revealed that the maximum density of protected plants is observed in the southern part of the Pompeevsky ridge, and among the administrative areas – in the Oktyabrsky district.


2021 ◽  
Vol 9 (1) ◽  
pp. 44-52
Author(s):  
Vadim V. Datsyuk

Abstract The current conservation status of the rare vascular plant species and rare forest communities of the Volyn Upland (Ukraine) was characterized and analyzed. We found 14 rare plant species belonging to the Red Data Book of Ukraine in this territory (Lycopodium annotium L., Allium ursinum L., Cephalanthera longifolia (L.) Fritsch, Cephalanthera rubra (L.) Rich., Cypripedium calceolus L., Epipactis atrorubens (Hoffm.) Schult., E. helleborine (L.) Crantz, Lilium martagon L., Listera ovata (L.) R. Br., Neottia nidus-avis (L.) Rich., Platanthera bifolia (L.) Rich., P. chlorantha (Cust.) Reichenb., Galanthus nivalis L., Carex umbrosa Host) and 28 locally rare species preserved within the Volyn, Rivne and Lviv regions. The major threats for these species were indicated. Four rare associations, according to the Green Data Book of Ukraine, were studied in the Volyn Upland (Carpineto (betuli)–Quercetum (roboris) hederosum (helicis), Carpineto (betuli)–Fraxineto (excelsioris)–Quercetum (roboris) alliosum (ursini), Tilieto (cordatae)–Carpineto (betuli)–Quercetum (roboris) alliosum (ursini) and Pinetum (sylvestris) caricosum (humilis)) and their structure, main features and status were characterized in detail. The importance of further research, and the development of recommendations for the conservation and continued preservation of these forest ecosystems of the Volyn Upland was highlighted.


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