scholarly journals Інтегральна оцінка стану популяцій рідкісних видів рослин

2017 ◽  
Vol 7 (2) ◽  
pp. 201-209
Author(s):  
G. Klimenko ◽  
A. Kovalenko ◽  
Yu. Lykholat ◽  
N. Khromykh ◽  
O. Didur ◽  
...  
Keyword(s):  
Population Density ◽  
Population Size ◽  
Plant Species ◽  
Rare Species ◽  
Field Size ◽  
Rare Plant ◽  
Population Status ◽  
Plant Populations ◽  
Ontogenetic Structure ◽  
Vital Structure

<p>The decline in the global biodiversity and the increase in the number of threatened plant species are the extremely unfavorable trends over the past decades. These phenomena determined the need for the thorough and detailed study of the plant population resistance mechanisms, and the development of the methods to predict the risks of their extinction. In the recent years, simultaneous assessment of the ontogenetic and the vital structure of the populations has become the most recognized method of studying populations. This approach has provided a significant increase in the reliability assessment of the population status and led to improved predictions of their dynamics. However, there are a limited number of the papers containing the complex demographic analysis, including the field size of the population, the number of individuals in the population, the population density, as well as genetic, ontogenetic, and vital structure of the populations with their dynamics. The purpose of this work was to determine the current state and to predict the possible trends in the status of seven rare plant species’ populations located on the territory of the National Nature Park “Desnyansko-Starogutsky” (Sumy province, Ukraine). Rare plants <em>Epipactis helleborine</em> (L.) Crantz, <em>Lilium martogon</em> L., <em>Listera ovata</em> (L.) R. Br., <em>Platanthera chlorantha</em> (Cust.) Rchb., and <em>Pulsatilla patens</em> (L.) Mill. are the species listed in the Red Book of Ukraine. Plant species <em>Circaea alpina</em> L. and <em>Pyrola chlorantha</em> Sw. are designated as the rare species on the territory of Sumy region. Integral estimation of the population status has based on the determination of such parameters as population size, population density, the ontogenetic index, and the index of the population vitality. Correlation analysis revealed a high level of correlation (r = 0. 99) not between everyone, but between some of the population parameters only. In our study, the indices that characterize the ontogenetic structure of the populations were the most frequently correlated: renewal index, generative index, as well as indexes of the population age (Δ) and the effectiveness of the population (ω). The regression analysis revealed that the long-term monitoring of the rare plant populations will be an integral character in the case of accounting for such factors as the population size and density dynamics over the years, changes in the population vitality (Q), and the annual changes of the magnitude of ω, which integrates the ontogenetic structure of the populations. It has been established that the populations of <em>L</em><em>.</em><em> martagon</em> from the phytocenoses of <em>Pinetum coryloso-maіanthemosum</em> and <em>Fraxinetum coryloso-convallariosum</em> were stable enough together with the progressive development trend. The populations of the rare species <em>C</em><em>.</em><em> alpina</em>, <em>L</em><em>.</em><em> martagon</em> (habitat between <em>Betuleta corylosa</em> and <em>Pineta corylosa-convallariosum</em>), and <em>P</em><em>.</em><em> patens</em> were estimated as the sustainable. A clear tendency toward a decrease in the individuals’ number was found in rare species represented by only one population (<em>L. ovata</em>, <em>P. chlorantha</em>, and <em>Pl. chlorantha</em>), as well as in one of the several populations of the species <em>C</em><em>.</em><em> alpina</em><em> </em>and <em>E. helleborine</em>. It was confirmed, that the dynamics of the rare plant populations is influenced not only by the internal population processes. The external ecological and coenotic factors, including the ones of a catastrophic nature, which are associated with the succession processes, as well as the level of wildlife conservation in the natural areas of Ukraine can be of decisive importance.</p>

scholarly journals Finding of rare species of plats in the southern part of the Sinyukha river basin

2021 ◽  
pp. 37-45
Author(s):  
K. V. Zhulenko
Keyword(s):  
Protected Areas ◽  
River Basin ◽  
Plant Species ◽  
Current Distribution ◽  
Rare Species ◽  
Rare Plant ◽  
Anthropogenic Pressure ◽  
Natural Habitats ◽  
Rare Plant Species ◽  
New Localities

Introduction. The Sinyukha river basin, in particular its southern part, is an area with a high level of anthropogenic pressure and a significant level of agricultural development (the proportion of agricultural land is more than 80%), with fragmented natural habitats. Detailed chorological study is needed to supplement the pattern of the distribution of rare plant species, to develop measures for their conservation, to optimize the existing network of protected areas in the region.Рurpose of the study isto analyze the current distribution and describe new finds of some rare plant species in the southern part of the Sinyukha river basin.Methods. The research was conducted in April-June 2021. We surveyed the area of the Sinyukha river valley from the village of Kalamazovo (Vilshansky district, Kirovohrad region) to its confluence with the Southern Bug River in Pervomaisk (Mykolayiv region), as well as – the valleys of its tributaries – Chorny Tashlyk, Malyi Tashlyk and Sukhyi Tashlyk. When locating a rare species, the plants were photographed and georeferenced at a point with GPS-navigator. Species cover is given according to the Broun-Blanquet scale. The distribution maps were performed by free QGIS software.Results.We revealed new and confirmed known localities of 20 rare species:Adonis vernalis, Asplenium septentrionale, Astragalus dasyanthus, A. odessanus, Bellevalia sarmatica, Clematis integrifolia, Crocus reticulatus, Dianthus hypanicus, Ephedra distachya, Hyacinthella leucophaea, Iris pontica, Iris pumila, Ornithogalum boucheanum, Pulsatilla pratensis, Primula veris, Sedum borissovae, Stipa capillata, S. lessingiana, S. pennata, Tulipa hypanica. Among the 20 identified rare species one has the category VU (Vulnerable) in the IUCN red list and belongs to the list of Resolution 6 of the Berne Convention; three species are narrowly local endemics of the Dnieper Upland; 11 are listed in the Red Book of Ukraine (5 of them have the status vulnerable, 1 – rare, 5 – insufficiently known); 5 species are regionally rare in Kirovohrad and 8 – in Mykolayiv regions. Most of the revealed species have a cover less than 5%. Only 9 of the 20 registered rare species characterized by more than five localities within the studied area. Originality. New localities of 20 rare species of plants of different levels of protection have been revealed. Prospects for conservation valuableof their habitats are offered.Conclusion. We have identified a significant number of new localities of rare plant species that are not covered by proper protection. This indicates the need for more detailed chorological research to elucidate the current distribution of rare species and the creation of new protected areas. Key words:rare species; threat category; red lists; natural habitats; chorology.

Ontogenetic Structure of Rare Plant Species on the Usturt Plateau in Uzbekistan

2020 ◽  
Vol 10 (3) ◽  
pp. 238-243
Author(s):  
T. Rakhimova ◽  
N. K. Rakhimova ◽  
Kh. F. Shomurodov ◽  
O. S. Abduraimov
Keyword(s):  
Plant Species ◽  
Rare Plant ◽  
Rare Plant Species ◽  
Ontogenetic Structure

scholarly journals The effects of hybridization on the small-scale variation in seed-bank composition of a rare plant species, Erica ciliaris L.

2007 ◽  
Vol 17 (3) ◽  
pp. 201-210 ◽  
Author(s):  
R.J. Rose
Keyword(s):  
Plant Species ◽  
Seed Bank ◽  
Rare Species ◽  
Habitat Restoration ◽  
Seed Banks ◽  
Small Scale ◽  
Rare Plant ◽  
Vegetation Types ◽  
Pure Species ◽  
Forestry Plantations

AbstractThe size and composition of the seed bank of a rare species (Erica ciliaris L.) was analysed. E. ciliaris hybridizes with a common relative in southern England (Erica tetralix). The seed banks of these co-occurring species were measured at a number of sites with a range of vegetation types and different management histories. Additional sets of samples were taken from forestry plantations on former heathland sites, where these species were known to occur. Relatively few hybrid seedlings were found in any of the seed-bank samples, even though their vegetative abundance within the sampling areas was equal to that of the pure plants. However, the abundance in the vegetation of the two pure species was reflected in the seed-bank size on each of the vegetation types, both with and without burning management. The seed banks from the forestry plantations show that the numbers of seeds of both E. tetralix and the hybrid were depleted, but that the seed bank of E. ciliaris was not significantly different from that of open heathland seed banks. The long-lived nature of the seed bank indicates that there are opportunities for habitat restoration on former heathland sites.

scholarly journals Composition, Distribution, Relative Abundance and Habitat Requirements of Endangered, Threatened and Rare Species to Southeast Utah Groups

1991 ◽  
Vol 15 ◽  
pp. 29-33
Author(s):  
Ken Heil ◽  
Lisa Floyd-Hanna
Keyword(s):  
Plant Species ◽  
Relative Abundance ◽  
Rare Species ◽  
National Park ◽  
Habitat Requirements ◽  
Rare Plant ◽  
Composition Distribution ◽  
Rare Plant Species ◽  
The Third

This was the third year of a four year investigation on the composition, distribution, relative abundance and habitat requirements of endangered, threatened, and rare plant species in the Southeastern Utah National Park Complex.

scholarly journals Avifauna of Saurashtra University Campus, Rajkot, Gujarat, India

2020 ◽  
Vol 12 (13) ◽  
pp. 16764-16774
Author(s):  
Varsha Trivedi ◽  
Sanjay Vaghela
Keyword(s):  
Species Richness ◽  
Population Density ◽  
Population Size ◽  
Rare Species ◽  
Bird Species ◽  
Species Density ◽  
Ecological Indices ◽  
University Campus ◽  
High Species Richness ◽  
Line Transects

We examined the avifauna of Saurashtra University Campus (SUC), Rajkot, Gujarat from July to December 2017.  The study area was divided into four sections: North (N), East (E), South (S) and West (W) and surveyed over 18 visits (four line transects/visit).  We recorded a total of 82 bird species from 67 genera, 40 families and 16 orders.  Of these 57 species were terrestrial and 25 aquatic.  By population size the most abundant birds were members of Columbidae (28%), Sturnidae (13%), and Charadridae (8%).  Seventy per cent of birds observed (n=7665) were classed as very common and 2% (n=261) as very rare.  Species density (S/N = 3.39) and population density (n/N = 196) were at their maximum in December.  Ecological indices on temporal base reveal high species richness and Simpson diversity (1/D =17.0 and 1-D= 0.942) in August and November and Shannon diversity was high (H’=3.275) in November during study period.  

scholarly journals Steppe and forest-steppe pine forests as refugiums in the conservation of rare and unique plant species

2021 ◽  
pp. 22-27
Author(s):  
N.О. Kin ◽  
◽  
P.V. Velmovskiy ◽  
Keyword(s):  
Plant Species ◽  
Rare Species ◽  
Pine Forests ◽  
Forest Steppe ◽  
Rare Plant ◽  
Steppe Species ◽  
Rare Plant Species

This report includes data on rare plant species of steppe and forest-steppe pine forests. We have identified the proportion of rare species that live in the studied forests for the regions where they are located, and for Russia as a whole. We have identified regional species found only in pine forests. The article shows that pine forests play an important role in the conservation of forest (boreal, boreonemoral, nemoral and boreonemoral forest-steppe) species and in the conservation of regional phytodiversity.

scholarly journals Conservation state of populations of rare plant species in highly transformed meadow steppes of Southern Opillya

2016 ◽  
Vol 24 (2) ◽  
Author(s):  
I. I. Dmytrash-Vatseba
Keyword(s):  
Plant Species ◽  
Rare Species ◽  
Grazing Intensity ◽  
Rare Plant ◽  
Meadow Steppe ◽  
Patch Area ◽  
Natural Habitats ◽  
Steppe Species ◽  
Rare Plant Species ◽  
Pasture Digression

Degradation of natural habitats causes rapid extinction of rare plant populations. The diversity of rare plant species in the meadow steppes of Southern Opillya (Western Ukraine) depends strongly on patch area, pasture digression of vegetation and a variety of eco-coenotical conditions. The main threats for the rare components of the meadow steppe flora are reduction of habitat and overgrazing. Spatial connections between sites are unable to support a constant rare plant population. The analysis of the composition of rare plant meadow-steppe species indicated that habitats with similar rare species composition usually have similar parameters of area, stages of pasture digression and eco-coenotical conditions. Spatial connectivity of patches does not ensure species similarity of rare components of the flora. Rare plant species were grouped according to their preferences for habitat , area and condition. In small patches subject to any stage of pasture digression grow populations of Adonis vernalis L., Pulsatilla patens (L.) Mill., P. grandis Wender., Stipa capillata L., S. рennata L., Chamaecytisus blockianus (Pawł.) Klásková etc. On the contrary, populations of other species (Carlina onopordifolia Besser. ex Szafer., Kuecz. et Pawł., Adenophora liliifolia (L.) Ledeb. ex A. DC., Crambe tataria Sebeók, Euphorbia volhynica Besser ex Racib., Stipa tirsa Stev. etc.) prefer large habitats, not changed by pasture digression. Prevention of reduction of rare species diversity requires preservation (also extension) of patch area and regulation of grazing intensity. 

scholarly journals Identification of valuable biotopes based on detailed geobotanical mapping in the territories of St. Petersburg proposed for protection

2020 ◽  
pp. 39-50
Author(s):  
V. N. Khramtsov
Keyword(s):  
Plant Species ◽  
Plant Communities ◽  
Rare Species ◽  
Animal Species ◽  
Gulf Of Finland ◽  
Rare Plant ◽  
Rare Plant Species ◽  
Black Alder ◽  
Forest Park ◽  
The Gulf Of Finland

Identification of valuable biotopes was carried out on the example of a small territory —the “Gagarka” forest park, located on the Northern coast of the Gulf of Finland within the borders of St. Petersburg (Fig. 1). Field data on landscapes, vegetation, flora and fauna were collected in 2018 to proof the need to create a specially protected natural territory of regional significance. The study area of 58.7 ha is an accumulative sea terrace with absolute elevations not exceeding 2.5 m above sea level. Despite of small area size, the vegetation is quite diverse and it is represented by the coniferous (spruce and pine) forests, several types of black alder forests, tree and shrub fens, littoral meadows, coastal and aquatic vegetation. Rare species of herbaceous plants and shrubs listed in the Red books of the Russian Federation (Krasnaya…, 2008) and St. Petersburg (Krasnaya…, 2018) are recorded and they often dominate in the plant communities. The preservation of biological diversity may be successful only if the landscapes and the biotopes hosting plant and animal species, including rare ones, are protected. Objects of protection can be both rare and typical ones for the regional biotopes. The environmental value of biotopes of the “Gagarka” forest park was assessed according to the following criteria: ecotopic (areas with rare and specific landforms, soils, hydrochemical regime), geobotanical (the presence of primary plant communities, rare plant communities; widespread, but with a tendency to reduce the area as a result of natural or anthropogenic impacts), floristic (the presence of rare species and species located on the border of their ranges), faunistic (the pre­sence of rare animal species, the species richness of fauna, the presence of permanent habitats of animals and birds, as well as biotopes used in certain seasons: during breeding, nesting, molting and migration). In addition, the compliance of biotopes with the European habitat classification EUNIS (European Nature Information System) was taken into account (Davies et al., 2004, EUNIS, 2018). Plant communities are the main indicator of habitats, and their borders mark the boundaries of habitats. In this regard, the geobotanical map (Fig. 2) is the basis for creating a map of biotopes. In addition to the geobotanical map, the map of actual landscapes, the map of the locations of rare plant species, and faunistic materials were used to create a map of valuable biotopes (Materialy…, 2018). It shows 6 types of habitats, that are particularly important for the conservation of biological and biotopic diversity (Fig. 3). All valuable habitats of the “Gagarka” forest park are located in the littoral zone of the Gulf of Finland and near its coast. They are grouped into 4 categories: black alder forests as a model of natural tree communities of the Littorina terrace and habitats of rare plant and animal species, coastal fens as rare plant communities on the territory of St. Petersburg and habitats of rare plant species, littoral meadows as rare plant communities on the territory of St. Petersburg and habitats of rare plant and animal species, shallow waters of the Gulf of Finland as habitats with highly productive communities of macrophytes, rare plant species, with a large species diversity and a high number of birds, including rare ones. The creation of new protected area “Gagarka” is necessary to preserve the habitats and rare species that grow and live here.

scholarly journals Distribution and population status of rare plant species in the Marmarosh Mountains (Ukrainian Carpathians)

2017 ◽  
Vol 74 (2) ◽  
pp. 163-176 ◽  
Author(s):  
Y. Kobiv ◽  
◽  
A. Prokopiv ◽  
V. Nachychko ◽  
L. Borsukevych ◽  
...  
Keyword(s):  
Plant Species ◽  
Rare Plant ◽  
Population Status ◽  
Rare Plant Species

Rare Plant Species of Natural Forests of Rostov Region

2020 ◽  
pp. 111-121
Author(s):  
Tatyana A. Sokolova ◽  
Olga Yu. Ermolaeva
Keyword(s):  
Plant Species ◽  
Rare Species ◽  
Iucn Red List ◽  
Red List ◽  
Rare Plant ◽  
Natural Forests ◽  
Rare Plant Species ◽  
Forest Flora ◽  
Rostov Region

As a result of long-term studies of natural forests in the Rostov region, more than 450 geobotanical descriptions of natural forest vegetation were performed, an inventory of forest flora and an ecological and floral classification of vegetation was carried out. Forest communities are described, represented by 6 classes (Carpino-Fagetea, Quercetea pubescentis, Alno glutinosae-Populetea albae, Alnetea glutinosae, Salicetea purpureae and Crataego-Prunetea), 7 unions (Scillo siberica-Quercion roboris, Aceri tatarici-Quercion, Alnion incanae, Alnion glutinosae, Salicion albae, berberidion vulgaris, Prunion Fruticosae) and 18 associations, 9 subassociations and more than 40 variants, 10 un-ranked communities. Plant species listed in the Red Book of the Rostov region (2014) were noted, including 9 species of Federal protection status, 8 species listed in the IUCN Red List (2014), and 11 species listed in the European Red List (2011). 75 rare species of plants were found in the natural forests of the region. After analyzing the geobotanical descriptions, the rare species were divided into 6 groups, relative to the topographical and historical characteristics of the forest. Key areas in forest areas for monitoring rare plant species are proposed and justified. A list of species recommended for inclusion in the new edition of the Red Book of the Rostov region has been compiled.

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