scholarly journals Floristic composition in the ruderal areas of Southeast Anatolia, Turkey

2021 ◽  
Vol 28 (1) ◽  
pp. 241-256
Author(s):  
Zeynep Zeynep Izgördü ◽  
Hasan Akan

Survey on the floral diversity is an important activity to evaluate the existing flora. This study was carried out from 2018 to 2020 to investigate the flora existing in the roadside and ruderal areas between Şanlıurfa and Bozova, nearby Euphrates river. A total of 200 taxa belonging to 138 genera and 41 families were determined. 9 of these taxa are endemic to Turkey. Among the plants identified, there are 5 geophytes, 1 parasite and 14 cultivated plants. The families with the most taxa are Fabaceae (47), Asteraceae (30), Lamiaceae (15), Poaceae (13) and Brassicaceae (7). The genera with the dominant taxa are; Astragalus (7), Medicago (7), Trigonella (7), Vicia (5) and Trifolium (5). In distribution of plants in the study area, the Irano-Turanian elements (38%, 75 taxa) ranks first, Mediterranean elements second (15%, 30 taxa) and Euro-Siberian elements third (1%, 3). The botanical- and vernacular names and habit categories of the recorded plant taxa are cited systematically. Threats to these plants and possible conservation strategies are also discussed briefly. Bangladesh J. Plant Taxon. 28(1): 241-256, 2021 (June)

2020 ◽  
Vol 27 (1) ◽  
pp. 137-152
Author(s):  
P Radha ◽  
R Nagaraj ◽  
C Udhayavani ◽  
K Sivaranjani

Survey on the floral diversity is an important activity to assess the existing flora. This study was carried out from December 2017 to December 2018 to document the flora existing in the Udumalpet Taluk, Tiruppur District, Tamil Nadu, India. As a result, a total of 370 taxa belonging to 263 genera of 82 angiosperm families have been documented. 52% of species of them are herbaceous. Euphorbiaceae and Fabaceae with 23 taxa each, Asteraceae with 21 species, Acanthaceae with 20 species and Amaranthaceae with 18 species are observed as the dominant families. In this article, family, botanical name, habit, vernacular name and various applications of the recorded plants are enumerated systematically. Threats to these plants and possible conservation strategies are also discussed briefly. Bangladesh J. Plant Taxon. 27(1): 137-152, 2020 (June)


PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3591 ◽  
Author(s):  
Tineke Kraaij ◽  
Richard M. Cowling ◽  
Brian W. van Wilgen ◽  
Diba R. Rikhotso ◽  
Mark Difford

Season of fire has marked effects on floristic composition in fire-prone Mediterranean-climate shrublands. In these winter-rainfall systems, summer-autumn fires lead to optimal recruitment of overstorey proteoid shrubs (non-sprouting, slow-maturing, serotinous Proteaceae) which are important to the conservation of floral diversity. We explored whether fire season has similar effects on early establishment of five proteoid species in the eastern coastal part of the Cape Floral Kingdom (South Africa) where rainfall occurs year-round and where weather conducive to fire and the actual incidence of fire are largely aseasonal. We surveyed recruitment success (ratio of post-fire recruits to pre-fire parents) of proteoids after fires in different seasons. We also planted proteoid seeds into exclosures, designed to prevent predation by small mammals and birds, in cleared (intended to simulate fire) fynbos shrublands at different sites in each of four seasons and monitored their germination and survival to one year post-planting (hereafter termed ‘recruitment’). Factors (in decreasing order of importance) affecting recruitment success in the post-fire surveys were species, pre-fire parent density, post-fire age of the vegetation at the time of assessment, and fire season, whereas rainfall (for six months post-fire) and fire return interval (>7 years) had little effect. In the seed-planting experiment, germination occurred during the cooler months and mostly within two months of planting, except for summer-plantings, which took 2–3 months longer to germinate. Although recruitment success differed significantly among planting seasons, sites and species, significant interactions occurred among the experimental factors. In both the post-fire surveys and seed planting experiment, recruitment success in relation to fire- or planting season varied greatly within and among species and sites. Results of these two datasets were furthermore inconsistent, suggesting that proteoid recruitment responses are not related to the season of fire. Germination appeared less rainfall-dependent than in winter-rainfall shrublands, suggesting that summer drought-avoiding dormancy is limited and has less influence on variation in recruitment success among fire seasons. The varied response of proteoid recruitment to fire season (or its simulation) implies that burning does not have to be restricted to particular seasons in eastern coastal fynbos, affording more flexibility for fire management than in shrublands associated with winter rainfall.


2020 ◽  
Vol 27 (1) ◽  
pp. 37-65
Author(s):  
Goutam Kumer Roy ◽  
Saleh Ahammad Khan

This study has documented the contemporary taxonomic information on the species of the class Magnoliopsida (Dicotyledons) extant in the homestead areas of Dhaka, Gazipur, Manikganj and Tangail districts of Bangladesh. In these areas, the Dicotyledons are comprised of total 455 species under 302 genera belonging to 78 families. Fabaceae with 41 species is the largest family and Solanum and Lindernia are the largest genera. Total 238 species are herbs followed by 129 species of trees and 88 species of shrubs. Total 332 species are economically useful. The composition and distribution of the species of this plant group are remarkably variable in the homestead areas of the four districts. The current status of seven threatened species viz., Abroma augusta, Andrographis paniculata, Aniseia martinicensis, Mucuna bracteata, Pterocarpus santalinus, Rauvolfia serpentina and Tournefortia roxburghii, included in the Red Data Book of Bangladesh and extant in the study area, has been evaluated and described. This study has identified some threats to the homestead flora and formulated some recommendations for the conservation of threatened and declining native plant species of the study area. The data provided by this study will serve as an important baseline to track the trend of changes in the floristic composition and diversity and sustainable development of plant genetic resources in the homesteads of the study area. Bangladesh J. Plant Taxon. 27(1): 37-65, 2020 (June)


2021 ◽  
Vol 9 ◽  
Author(s):  
Imade Y. Nsa ◽  
Oyetola O. Oyebanji ◽  
Eric E. Igbinigie ◽  
Ayodeji A. Odunsi

The remnant floral diversity of a naturally reclaimed area proximal to an abandoned mine was assessed. The coal mine site, the Incident zone (IZ) and an unsullied site, the Control zone (CZ), were sampled. Using a 5 m2 quadrat, the floristic composition was determined by the occurrence, distribution analysis, and species diversity indices. The study revealed a degraded vegetation type and recorded a total of 60 species, 53 genera and 27 families. Both the IZ and CZ shared 26.67% species similarity, while 36.67% are were unique to each zone. Five species were dominant (Ageratum conyzoides, Panicum maximum, Calopogonium mucunoides, Chromolaena odorata). While the dominant genera vary between IZ (Borreria, Dioscorea, Ipomoea, and Phyllanthus) and CZ (Desmodium, Euphorbia, and Ipomoea), Asteraceae and Poaceae were the dominant families in both zones. Forbs were the most dominant life forms in both zones; Cyclosorus sp. and Adiantum sp. were only found on the IZ, whereas, Kyllinga erecta and Mariscus alternifolius were exclusive to the CZ. Our results reflect that species composition and vegetation paradigm in the study area could be influenced by coal mining, farming, infrastructural installations and climate. Hence, we suggest future studies to investigate how the species adapt to the environment. Although most of the species encountered belonged to lower-risk conservation, the conservation of the species to this area is imperative.


2004 ◽  
Vol 31 (1) ◽  
pp. 38-46 ◽  
Author(s):  
J. BOTHA ◽  
E.T.F. WITKOWSKI ◽  
C. M. SHACKLETON

Rising demand for medicinal plants has led to increased pressure on wild plant populations. This, combined with shrinking habitats, means that many species in South Africa are now facing local extinction. In 1997, a study was initiated to determine the extent of trade in medicinal plants in the South African Lowveld (the low lying plains to the east of the Drakensberg escarpment), and to investigate socio-economic factors influencing trade and resource management. Trade was not as extensive in the Lowveld as in major urban markets such as Durban or the Witwatersrand (Johannesburg and surrounding towns), either in terms of the quantity, number or range of species sold, or the numbers of people relying on the trade for an income. In markets assessed in Mpumalanga Province, 176 species were identified (71% of the vernacular names encountered in the market place), representing 69 plant families. In Limpopo, 70 different species were identified (84% of the vernacular names encountered in the market place), representing 40 families. Imports were significant in Mpumalanga (33% of the plants on offer), mainly from Mozambique. A detrended correspondence analysis showed substantial differences between species traded in Mpumalanga and those sold in Limpopo. There was little variation in the species stocked by vendors in Mpumalanga, regardless of the season, the attributes of the seller, or whether business was carried out in urban or rural areas. In contrast, there was considerable variation in the stock inventories of the Limpopo traders. Despite the lower levels of local trade, increased harvesting pressure is being experienced regionally, to meet demand in metropolitan centres such as the Witwatersrand. This study showed considerable local variation and complexities in the harvesting and marketing of medicinal plants, with both a national and an international dimension. This dual spatial scale presents both opportunities and challenges in the management of these plants, which need to be addressed simultaneously, particularly with respect to research requirements and development of predictive models and capacity. Cooperation in conservation strategies and policies is required at regional, national and international levels, while ensuring that management initiatives take into account local market conditions and the socio-economic realities facing both consumers and those who depend on the trade for their livelihoods.


2017 ◽  
Vol 6 (9) ◽  
pp. 1681
Author(s):  
Vineet K. Shrivastava ◽  
Upamanyu Hore ◽  
Jagdish C. Kala ◽  
Arpita Srivastava

Assessment of flora species which form an integral part of animal ecology, in wildlife based protected areas is necessary before any meaningful conservation work can commence. Understanding floral diversity is important for helping forests managers to evaluate the complexity and resources. Substantial literature is not available on floral diversity of the Orchha Wildlife Sanctuary as a ready reference and thus require to take up study of flora of the sanctuary to fill the gap. Orchha Sanctuary is situated between Betwa and Jamni rivers of Bundelkhand region of Madhya Pradesh. The total area of the sanctuary is 45.86 square kilometer, which includes both land and water bodies. The extensive floristic exploration of Orchha Wildlife Sanctuary was carried out. The floristic composition was recorded by making visual observations. Specimen samples were collected at different reproductive stages to prepare herbarium and substantiate their correct identity. Forests in Orchha Sanctuary are Southern Tropical Dry Deciduous Forests and Kardhai Forests. The forests are predominately covered by Teak and Kardhai. Other species like Haldu, Sejha, Arjun, Saja, Khair, Achar and mahua are scattered all over the area. 42 genera of Angiosperms comprising 23 families occured in the Sanctuary. The prominently represented family in terms of highest number of genera is Leguminosae comprising 11 genera. The study on floral diversity in the sanctuary will serve as a basic tool that will enable other researcher and managers of the sanctuary to further take up studies on biodiversity assessment and vegetation structure.


1993 ◽  
Vol 83 (1) ◽  
pp. 94
Author(s):  
Will D. Swearingen ◽  
John F. Kolars ◽  
William A. Mitchell

2021 ◽  
Vol 28 (1) ◽  
pp. 27-60
Author(s):  
Saleh Ahammad Khan ◽  
Sharmin Sultana ◽  
Gazi Mosharof Hossain ◽  
Shayla Sharmin Shetu ◽  
Md Abdur Rahim

This study represents comprehensive taxonomic information on current floristic composition in the semi-natural campus area of Jahangirnagar University. This study reveals that this campus area harbours a total of 917 species belonging to 574 genera and 145 families of vascular plants. 70.34% of these species are wild and the rest are cultivated/planted. 63.79% of the species are native and 36.21% are exotic to Bangladesh. Pteridophytes and Gymnosperms are represented by 22 and 12 species, respectively, whereas, Angiosperms by 883 species. Magnoliopsida (dicotyledons) and Liliopsida (monocotyledons) are composed of 618 and 265 species, respectively. The family Poaceae with 89 species is the largest, which is followed by Fabaceae with 44 species and Asteraceae with 40 species. Most of the species are herbs (56.16%) and growing in diverse habitats. All species are economically or ecologically important, but mostly as medicinal, ornamental, fodder and forage, fruit, vegetable, timber and fuel wood. The study area houses 15 plant species, previously listed as threatened to Bangladesh. Thus, the study area is floristically rich in respect to its number of plant species belonging to different groups and its size. This area might serve as a campus-based excellent center of biodiversity conservation by strengthening the existing management and adopting necessary policies and strategies. Bangladesh J. Plant Taxon. 28(1): 27-60, 2021 (June)


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