scholarly journals Floristic characteristics of some synanthropic plant communities of the Kobuleti lowland (Adjara, Georgia)

2021 ◽  
Vol 91-92 ◽  
pp. 10-23
Author(s):  
Irakli Mikeladze ◽  
Nani Gvarishvili ◽  
Aleksandre Sharabidze ◽  
Gogita Shainidze
Keyword(s):  
Plant Communities ◽  
Woody Plants ◽  
Castanea Sativa ◽  
Field Research ◽  
Woody Species ◽  
Corylus Avellana ◽  
Asian Origin ◽  
Ancient Times ◽  
Floristic Characteristics

The materials of the field research of synanthropic vegetation in the territory of the Kobuleti in the 2016–2020 years are provided. In particular, 134 taxa belonging to 49 families and 97 genera were revealed in the three different plant communities (Cryptomerietum japonicae, Eucalyptetum-viminali-globulo-cinerei, and Cinnamomo glanduliferae-Cryptomerietum japonicae) in the Kobuleti lowland. The community Cryptomerietum japonicae comprises 66 taxa, 33 of which are native, and 33 have an alien origin. Woody plants in Cryptomerietum japonicae are represented by 15 taxa. The community Eucalyptetum-viminali-globulo-cinerei comprises 91 taxa, 36 of which are native and 55 are alien. Woody plants in Eucalyptetum-viminali-globulo-cinerei are represented with 17 taxa, while the rest 74 taxa are herbaceous. In Cinnamomo glanduliferae-Cryptomerietum japonicae there are discovered 49 plant taxa, including 25 native and 24 aliens. In this community, 16 taxa are represented by woody plants and 33 taxa – by herbaceous ones.Therefore, in the investigated region, 60 taxa (44.77%) were found to be native and 74 taxa (55.23%) alien. Among aliens, 31 taxa have East Asian origin, 16 taxa are from the Mediterranean, 13 taxa originated from Europe, ten taxa originated from North American, and four – originated from Australia.Despite cuttings and artificial planting of alien representatives, some indigenous woody species (i.e., Corylus avellana, Frangula alnus, Vaccinium arctostaphylos, Smilax excelsa, Quercus hartwissiana, Carpinus caucasica, Castanea sativa, and Hedera colchica) still occur in this territory. Both native and alien taxa participate in the formation of the described landscape structure. Successional events have started in the Kolkheti Lowland in ancient times. It is a long-term process, which is still ongoing, as our observations confirmed it.

scholarly journals Urban Dendroflora of the Macedonia Park in the City of Skopje, North Macedonia

2019 ◽  
Vol 2 (3) ◽  
pp. 10-28
Author(s):  
Martina Shotaroska ◽  
Bojan Simovski ◽  
Tomcho Nikolovski ◽  
Katerina Chonevska ◽  
Ivan Minčev ◽  
...  
Keyword(s):  
Woody Plants ◽  
Field Research ◽  
Woody Species ◽  
Pinus Nigra ◽  
Capital City ◽  
Cupressus Sempervirens ◽  
Hedera Helix ◽  
Platycladus Orientalis ◽  
Ecological Features ◽  
Juniperus Scopulorum

Subject of research in this article is the urban dendroflora of the Macedonia Park, situated on about 50,000 m2 in the Macedonian capital city of Skopje, i.e., identification and presence of the recent woody plants. Thus, observed are morphological and ecological features of the woody plants and their current state in this urban environment. The investigation relates to a seven-year period (since the establishment of the Park in 2012 up to late 2019). After the field research and the inventorisation of the woody plants in the Park, 82 taxa were identified, represented in 1,318 individuals. Most represented tree species is the hybrid Platanus × hispanica Mill. ex Münchh. with 103 individuals (7.81% of the overall urban dendroflora). Most frequent tree including infraspecific taxa is Fraxinus excelsior L. (including F. e. ‘Globosa’, F. e. ‘Jaspidea’, and F. e. ‘Pendula’) with a total number of 146 individuals (11.08%). Concerning other growth form, the mini and small tree roses of hybrid Rosa Floribunda Group outnumber all ornamental woody species with 225 bushes (17.07%). Climbers are represented with 3 taxa (3.66% of identified taxa) in pergolas (Wisteria sinensis /Sims/ Sweet, Parthenocissus quinquefolia /L./ Planch.), and wire cage topiary (Hedera helix L.). Likewise, 87 individuals (6.60%) of 10 species (12.19%) occur as remnants of the greening in the past of which 3 species are used as a green core of a small sacral architecture: Cupressus sempervirens var. horizontalis (Mill.) Loudon (with 10 trees), Platycladus orientalis (L.) Franco (3), and Pinus nigra J.F.Arnold (1). In general, the urban dendroflora is properly selected and used for greening, although certain species and individuals are withering (e.g. Betula pendula ‘Youngii’, Juniperus scopulorum ‘Skyrocket’, F. e. ‘Jaspidea’) or unsuitably used for avenue and in small alpine-like garden.

Impacts of traditional livestock corrals on woody plant communities in an East African savanna

2013 ◽  
Vol 35 (3) ◽  
pp. 349 ◽  
Author(s):  
Kari E. Veblen
Keyword(s):  
Plant Communities ◽  
Woody Plant ◽  
Woody Species ◽  
East African ◽  
Fuel Wood ◽  
Impact Zones ◽  
Chronosequence Approach ◽  
Over Time ◽  
Central Kenya

In African savannas, humans and their livestock leave long-term legacies on the landscape in the form of abandoned livestock bomas (corrals). Once abandoned, bomas develop into nutrient-rich herbivore hotspots characterised by distinctive plant communities. Impacts of bomas, however, extend beyond the boundaries of the boma site itself. This is especially true for woody species which are intensively harvested for boma fencing material and fuel wood. Following boma abandonment, it is not clear how quickly, or to what extent, woody plant communities may change and develop over time. A chronosequence approach was used to investigate the effects of traditional livestock bomas on woody plant communities over time in an Acacia drepanolobium Sjost. savanna in central Kenya. Densities of woody species associated with boma sites that had been abandoned <4, 7–42, and >42 years before were measured. Reductions in densities of the dominant tree, A. drepanolobium, were still detectable after >42 years, especially in the highest impact zones at boma edges (up to 60 m from the boma). Despite these overall reductions, the edge zones of old boma sites had unusually high densities of very large A. drepanolobium trees. Woody species richness increased at edges of newly abandoned bomas, as did densities of the uncommon shrub Lycium europaeum L., and these changes persisted for several decades. These patterns likely result from interactions among species within the woody plant community, as well as interactions with herbivores and edaphic factors.

scholarly journals Changes in vegetation of the Mszar Bogdaniec nature reserve

2016 ◽  
Vol 77 (2) ◽  
pp. 104-116
Author(s):  
Marcin K. Dyderski ◽  
Andrzej M. Jagodziński
Keyword(s):  
Plant Communities ◽  
Nature Reserve ◽  
Detrended Correspondence Analysis ◽  
Woody Species ◽  
Monitoring And Evaluation ◽  
Ecological Traits ◽  
Current State ◽  
As Species ◽  
Phytosociological Relevés

Abstract Changes of vegetation in forests and wetlands require continuous monitoring and evaluation. Due to the lack of in-depth knowledge, it is still very challenging to predict and record vegetation changes. This study attempts to evaluate changes in forest and transitional bog vegetation over 14 years in the Mszar Bogdaniec nature reserve (West Poland; 21.98 ha). We described the current vegetation using 50 phytosociological relevés conducted in 2012 and 2013. Moreover, we calculated and compared ecological indices describing ecological traits of the vegetation in two different times. We also used Detrended Correspondence Analysis (DCA) to assess changes in floral composition. Most of the studied vegetation traits did not change significantly during the last 14 years. Statistically significant changes occured in the proportion of mosses and cover of the herb layer, both of which increased, as well as species richness in forest plant communities, and the cover of species from Scheuchzerio-Caricetea class in peat bog plant communities, both of which decreased. The current state of the vegetation is a result of former human activity such as drainage and planting monoculture tree stands. The observed changes during the last 14 years were fluctuations rather than direct changes. Encroachment of the woody species into transitional bog is a fluctuation, which may be secondary succession in the long-term.

Long-term dynamics and destruction of marsh vegetation in the Kolokolkova Bay of the Barents Sea

2012 ◽  
pp. 66-77 ◽  
Author(s):  
I. A. Lavrinenko ◽  
O. V. Lavrinenko ◽  
D. V. Dobrynin
Keyword(s):  
Species Composition ◽  
Plant Communities ◽  
Barents Sea ◽  
Mean Value ◽  
Marsh Vegetation ◽  
Composition And Structure ◽  
The Mean ◽  
Species Composition And Structure

The satellite images show that the area of marshes in the Kolokolkova bay was notstable during the period from 1973 up to 2011. Until 2010 it varied from 357 to 636 ha. After a severe storm happened on July 24–25, 2010 the total area of marshes was reduced up to 43–50 ha. The mean value of NDVI for studied marshes, reflecting the green biomass, varied from 0.13 to 0.32 before the storm in 2010, after the storm the NDVI decreased to 0.10, in 2011 — 0.03. A comparative analysis of species composition and structure of plant communities described in 2002 and 2011, allowed to evaluate the vegetation changes of marshes of the different topographic levels. They are fol­lowing: a total destruction of plant communities of the ass. Puccinellietum phryganodis and ass. Caricetum subspathaceae on low and middle marches; increasing role of halophytic species in plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. typicum on middle marches; some changes in species composition and structure of plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. festucetosum rubrae on high marches and ass. Parnassio palustris–Salicetum reptantis in transition zone between marches and tundra without changes of their syntaxonomy; a death of moss cover in plant communities of the ass. Caricetum mackenziei var. Warnstorfia exannulata on brackish coastal bogs. The possible reasons of dramatic vegetation dynamics are discussed. The dating of the storm makes it possible to observe the directions and rates of the succession of marches vegetation.

scholarly journals Efficient Protocol for Improving the Development of Cryopreserved Embryonic Axes of Chestnut (Castanea sativa Mill.) by Encapsulation–Vitrification

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 231
Author(s):  
Mariam Gaidamashvili ◽  
Eka Khurtsidze ◽  
Tamari Kutchava ◽  
Maurizio Lambardi ◽  
Carla Benelli
Keyword(s):  
Activated Charcoal ◽  
Castanea Sativa ◽  
Alginate Beads ◽  
Embryonic Axes ◽  
Root Regrowth ◽  
Castanea Sativa Mill ◽  
Whole Plants ◽  
Long Term Preservation ◽  
Direct Immersion

An optimized cryopreservation protocol for embryonic axes (EAs) of chestnut (Castanea sativa Mill.) has been developed based on the encapsulation–vitrification procedure. EAs of mature seeds were aseptically dissected and encapsulated in alginate beads with or without 0.3% (w/v) activated charcoal (AC). Embedded EAs were dehydrated with Plant Vitrification Solution 2 for different treatment times up to 120 min, followed by direct immersion in liquid nitrogen. Cryopreserved embryonic axes encapsulated with AC showed higher survival (70%) compared to those encapsulated without AC (50%). Sixty-four percent of embryonic axes, from synthetic seeds with AC, subsequently developed as whole plants. Plantlet regrowth was faster in AC-encapsulated EAs and showed enhanced postcryopreservation shoot and root regrowth over 2 cm after five weeks from rewarming. Results indicate that encapsulation–vitrification with activated charcoal added to the beads is an effective method for the long-term preservation of Castaneasativa embryonic axes.

scholarly journals Toward a Better Understanding of Metal Nanoparticles, a Novel Strategy from Eucalyptus Plants

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 929
Author(s):  
Hanadi Sawalha ◽  
Rambod Abiri ◽  
Ruzana Sanusi ◽  
Noor Azmi Shaharuddin ◽  
Aida Atiqah Mohd Noor ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Woody Plants ◽  
Woody Species ◽  
Forest Products ◽  
Ideal Candidate ◽  
Promising Tool ◽  
Novel Strategy ◽  
The Ideal

Nanotechnology is a promising tool that has opened the doors of improvement to the quality of human’s lives through its potential in numerous technological aspects. Green chemistry of nanoscale materials (1–100 nm) is as an effective and sustainable strategy to manufacture homogeneous nanoparticles (NPs) with unique properties, thus making the synthesis of green NPs, especially metal nanoparticles (MNPs), the scientist’s core theme. Researchers have tested different organisms to manufacture MNPs and the results of experiments confirmed that plants tend to be the ideal candidate amongst all entities and are suitable to synthesize a wide variety of MNPs. Natural and cultivated Eucalyptus forests are among woody plants used for landscape beautification and as forest products. The present review has been written to reflect the efficacious role of Eucalyptus in the synthesis of MNPs. To better understand this, the route of extracting MNPs from plants, in general, and Eucalyptus, in particular, are discussed. Furthermore, the crucial factors influencing the process of MNP synthesis from Eucalyptus as well as their characterization and recent applications are highlighted. Information gathered in this review is useful to build a basis for new prospective research ideas on how to exploit this woody species in the production of MNPs. Nevertheless, there is a necessity to feed the scientific field with further investigations on wider applications of Eucalyptus-derived MNPs.

scholarly journals Rearing Trissolcus japonicus and Trissolcus mitsukurii for Biological Control of Halyomorpha halys

Insects ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 787
Author(s):  
Giuseppino Sabbatini-Peverieri ◽  
Christine Dieckhoff ◽  
Lucrezia Giovannini ◽  
Leonardo Marianelli ◽  
Pio Federico Roversi ◽  
...  
Keyword(s):  
Biological Control ◽  
Control Method ◽  
Egg Parasitoids ◽  
Halyomorpha Halys ◽  
Progeny Production ◽  
Asian Origin ◽  
Frequent Use ◽  
Trissolcus Japonicus ◽  
Cumulative Curves

Halyomorpha halys is a severe agricultural pest of Asian origin that has invaded many countries throughout the world. Pesticides are currently the favored control methods, but as a consequence of their frequent use, often disrupt Integrated Pest Management. Biological control with egg parasitoids is seen as the most promising control method over the long-term. Knowledge of the reproductive biology under laboratory conditions of the most effective candidates (Trissolcus japonicus and Trissolcus mitsukurii) for optimizing production for field releases is strongly needed. Rearing of these egg parasitoids was tested by offering three different host supply regimes using new emerged females and aged, host-deprived females in different combinations. Results showed a mean progeny per female ranging from 80 to 85 specimens for T. japonicus and from 63 to 83 for T. mitsukurii. Sex ratios were strongly female biased in all combinations and emergence rates exceeded 94% overall. Cumulative curves showed that longer parasitization periods beyond 10–14 days (under the adopted rearing regimes) will not lead to a significantly increase in progeny production. However, ageing females accumulate eggs in their ovaries that can be quickly laid if a sufficient number of host eggs are supplied, thus optimizing host resources. Our data showed that offering H. halys egg masses to host-deprived female Trissolcus once a week for three weeks allowed its eggs to accumulate in the ovary, providing the greatest number of offspring within a three week span.

scholarly journals Revised distribution and phytosociological data of Orobanche coerulescens Stephan in Willd. (Orobanchaceae): Poland in relation to Central Europe

2012 ◽  
Vol 26 (1) ◽  
pp. 61-72 ◽  
Author(s):  
Renata Piwowarczyk
Keyword(s):  
Eastern Europe ◽  
Central Europe ◽  
Plant Communities ◽  
Field Research ◽  
Range Limits ◽  
Migration Routes ◽  
Original Field ◽  
Critical Revision ◽  
And Migration ◽  
North Western

Abstract Orobanche coerulescens has a Eurasian distribution. The species is classified as extinct at most of its localities at the western limit of its range. Its populations are very scarce and critically endangered in Central Europe. This work presents the current distribution of O.coerulescens in Poland, based on a critical revision of herbarium and literature data as well as results of original field research, and reviews its distribution in Central Europe (partly in Eastern Europe). Habitats, plant communities, and migration routes of O.coerulescens in Central Europe are discussed. The species was initially known in Poland from now historical localities in Pomerania and the valley of the lower Vistula. In 2000-2011 it was recorded at 9 localities in Podlasie, the Małopolska Upland (Wyżyna Małopolska), and the Łódź Hills (Wzniesienia Łódzkie). Its abundance at the localities ranged from a few to over 1000 shoots. These are the largest populations of O.coerulescens at its western and north-western range limits.

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