A Comparison of the Urban Flora of Different Phytoclimatic Regions in Italy

1998 ◽  
Vol 7 (5) ◽  
pp. 367 ◽  
Author(s):  
L. Celesti Grapow ◽  
C. Blasi
Keyword(s):  
Author(s):  
Philip James

Beginning in the Far East over 2000 years ago the discussion in this chapter charts the movement of species found in contemporary urban environments around the globe. A city is dependent on trade for the resources required by the inhabitants to live and work. Some items of trade are plants and animals, and over time, many species have been introduced intentionally, and many others unintentionally (perhaps as a result of hitching a lift in or on items being traded between countries and continents) to become part of the urban flora and fauna. All the time that such global dispersal has been occurring, some floral and faunal species originally present in an urban area have become locally extinct. These processes of invasion and extinction are controlled by filters and process, and there are certain traits, the possession of which is seemingly beneficial to organisms in urban environments.


Author(s):  
G. G. Derevyanska ◽  
O. Z. Glukhov

<p>This paper considers the problem of geographic links between the urban flora of steppe zone of Ukraine on the example of the industrial agglomeration Donetsk-Makeyevka, in comparison with urban flora of Kherson and Kirovograd. We presented the detailed description of special features of the composition of geographic elements of the agglomeration flora. It strongly reflects the characteristic features of steppe urban flora, because its territory is affected by the anthropogenic influence at large extend. The spectrum of geographic ranges of species from the agglomeration Donetsk-Makeyevka urban flora numbers 6 types, 12 classes and 130 groups of ranges. The urban flora is both represented by species with wide and local ranges, endemics, that point to its significant heterogeneity. However, compared to the flora of Kherson and Kirovograd, the role of holarctic type of ranges in the agglomeration flora (375 species compared to 400 and 522 species, respectively) is reduced in favor of the polyregional type, reflecting active adventization processes. The holarctic class itself is represented by 150 species (16.7%). It far exceeds the number of species of this class in the regional flora (9.2%), since nearly a half of their number in the observed flora is adventive species. Second place by the number of species in the holarctic class belongs to the European and North American group (13; 1.5%). Apart from this, seven more groups of the class, comprising 1-3 species each, are connected with North America. The polyregional type is represented to a large extent by the species of ruderal habitats. The total number of species of this type is 199. The palaearctic class includes the greatest number of ranges of species from the agglomeration urban flora (31); it consists of 175 species (19.5%), that is less than such index for regional flora (27.3%). The European and Old Mediterranean transition type comprises 97 species (10.8%), that is less than in other urban flora of steppe zone (128; 13.3% in Kherson and 171; 18.0% in Kirovograd). The Nomadic type numbers 132 species (14.7%). One more species – Verbascum marschallianum Ivanina et Tzvelev – is related to the Nomadic and European transition type. The Nomadic and Old Mediterranean transition type includes 93 species (10.4%). This all suggests heterogeneity of urban flora of steppe zone of Ukraine due to their wide geographic connections. On the one hand, they have features of regional flora, which was formed under the great influence of Old Mediterranean flora and has a significant number of narrow-range and endemic species. On the other hand, under the impact of urbanization one can observe the reduction of the role of ranges of the Nomadic type and the enhanced role of the polyregional type due to the significant number of adventive species.</p><p> </p>


2013 ◽  
Vol 55 (2) ◽  
pp. 141-165
Author(s):  
Janina Skrzyczyńska ◽  
Jolanta Marcinik

Attempt of comparative analysis of the segetal flora of Siedlce City with similar flora of areas of arable lands of the Siedlce Upland is presented in the paper. Received results show the larger value for urban flora of apophitysm coefficient - 63,3% (61% for Upland), flora modernization - 0,52 (0,42 for Upland) and flora lability - 19 (15 for Upland). On the other hand segetal flora of the Siedlce Upland is characterised by larger synanthropization coefficient - 104 (93 for the city). As to other differences, considerable larger participation of perennial species in the flora of the city (45,5% Siedlce; 37,1% Upland) is noteworthy. Moreover the occurrence of juvenile forms of arborescent species and plants running wild from gardens and parks, e.g.: <i>Mathiola incana, Aesculus hippocastanus, Sedum reflexum, Nigella damascena, Helianthus tuberosus</i> among species weeding urban cultivation is clearly noticeable.


1990 ◽  
Vol 22 (1) ◽  
pp. 87-101 ◽  
Author(s):  
O. L. Gilbert

AbstractThe lichen colonization of recently created urban wasteland is described by referenceto 40 sites in England, Scotland and Wales. The 100 species encountered form a series of overlapping communities in which successional relationships over the first 16 years have been investigated. Floristic variation within towns tends to be greater than variation between them. Ona national scale climatological, geological and historical factors appear to play only a small part in determining the composition of this pioneering flora. Many species can be accommodated within the strategy group stress-tolerant ruderals; a few possess the character of ruderals. The heyday of this component of the urban flora may be drawing to a close. Acarospora heppii f. luteopruinosa, Lecidea polycarpella and Micarea excipulata are reported as new to Britain.


2019 ◽  
Vol 26 (3) ◽  
Author(s):  
Nathalia Monalisa-Francisco ◽  
Flavio Nunes Ramos

2020 ◽  
Vol 80 (1) ◽  
Author(s):  
Slobodan Jovanović ◽  
Milan Glišić

In the last two decades, the number of research articles with a focus on urban ecosystems in Europe has increased significantly. However, explored cities are very unevenly distributed, and most of the studies are focused on Central Europe. The aim of this analysis was to provide a realistic insight into the results of previous research on urban flora and vegetation in Southeast Europe. The analysis covers a total of 149 articles, which are classified according to the topic and concept of research. The rates of exploration of urban flora and vegetation vary considerably across the countries of Southeast Europe. The floristic approach was the most common in most of the countries. Although some countries of Southeast Europe have a significant number of floristic studies (e.g. Serbia and Croatia with more than 20 of each country), their urban flora is still insufficiently explored compared to other European regions. Also, the use of different methodologies makes it impossible to compare results in an adequate way and draw relevant conclusions. Unlike the studies in most of Europe, with a broader spatial framework and uniform methodology, in Southeast Europe they usually referred to individual cities, specific habitats or certain parts of the cities. Hence, including Southeast Europe in large-scale studies would be beneficial.


Flora ◽  
2003 ◽  
Vol 198 (5) ◽  
pp. 366-376 ◽  
Author(s):  
Zdena Chocholoušková ◽  
Petr Pyšek

2006 ◽  
Vol 12 (5) ◽  
pp. 490-501 ◽  
Author(s):  
Laura Celesti-Grapow ◽  
Petr Pyšek ◽  
Vojtěch Jarošik ◽  
Carlo Blasi

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