scholarly journals Structural peculiarities of the flower-bearing shoot of some Apiaceae Lindl. species

Author(s):  
D. T. Khamraeva

The article considers the synflorescence structure of five little-studied and endemic representatives ofUmbelliferae (Apiaceae Lindl.) from Central Asia. Among the taxa studied, Komarovia anisosperma is distinguished bya special organization of the inflorescence, and which is represented by the type of storey raceme from open double umbels collected 2–6 in whorls. The remaining species are characterized by one type of inflorescence – this is a panicle ofclosed double umbels. Belonging to the same tribe Komarovieae J. Zhou et S. R. Downie, species Komarovia anisosperma and Sphaerosciadium denaense, have some similar features in the structure of the synflorescence. So, the first specieshas 5 lateral axes of the I order around the main axis assembled in whorls, while in the second species they are locatedwith a whorl under the central umbel , in addition, both species do not have involucres and involucels. The revealedfeatures of branching of the inflorescence and flower arrangement, signs of involucres and involucels, the length of therays of the umbels and pedicels, as well as the characteristic of the formation of various types of flowers in the umbeland synflorescence can be used in keys and diagnoses, and also for the conservation of rare and endemic species, forthe collection of made seeds from plants in natural conditions with further introduction to the botanical gardens or onthe protected areas.

2021 ◽  
Vol 58 (1) ◽  
pp. 4878-4882
Author(s):  
Lebedeva N.I. Et al.

The article highlights information on the study of the fauna of stoneflies existing in the watercourses of Uzbekistan. Substantiating original collections and data from literary sources, a revision of the fauna of stoneflies in Uzbekistan, which includes 48 species from 19 genera and 7 families, was conducted. The endemic species have been identified for Central Asia and Uzbekistan for the first time.


2009 ◽  
pp. 179-193
Author(s):  
Krisztián Kis

One of the biggest questions of developing rural areas is that people and organisations living and making their activity there how and in what measure utilize the local or obtainable externalresources. The concept of the landscape expresses the direct connection of the natural resources with the socio-economic processes. This is a two-way connection, (1) on the one hand the single landscapes provide the unique combination of natural conditions for the socio-economic utilisation which is different from other landscapes, (2) on the other hand as the result of the interaction of natural spheres together with the social and economic spheres the landscapes change in a different manner and in a different measure. The landscape as a territorial unit and as a resource is inseparable from the natural resources, and the natureconservation plays an increasingly important role in the use of the landscape and landscape management, which is an essential task not only in protected areas, but everywhere. The natural resources, the landscape, the nature conservation and the landscape use are related tightly, in which the so-called ecological/biological resources and their sustainable use have asignificant role. 


2005 ◽  
Vol 30 ◽  
pp. 111-125 ◽  
Author(s):  
José Miguel Medina-Cazorla ◽  
Francisco Javier Pérez-García ◽  
Juan Antonio Garrido-Becerra ◽  
Fabián Martínez-Hernández ◽  
Antonio Mendoza ◽  
...  

RESUMEN. Riqueza y rareza florísticas en los afloramientos dolomíticos de las Cordilleras Béticas (sur de España): ensayo preliminar. Sobre los afloramientos dolomíticos de las Cordilleras Béticas se desarrollan comunidades vegetales muy específicas y ricas en endemismos. Dichas comunidades no han sido estudiadas desde un punto de vista conservacionista. Este trabajo aborda su distribución, riqueza y grado de protección actuales permitiendo evaluar la eficacia de la red de espacios protegidos. Para ello, se ha creado una base de datos de presencia/ausencia de dolomitófilos en cuadrículas UTM de 10 km. de lado que han sido definidas como unidades geográficas operacionales (UGOs). Posteriormente, se ha evaluado la riqueza, la rareza en continuo y la rareza en discontinuo de las UGOs. Los resultados obtenidos han subrayado la importancia del sector Malacitano-Almijarense de la provincia Bética (en especial la zona del Trevenque) como centro de riqueza y endemicidad de dolomitófilos. Por otra parte, la red de espacios naturales abarca casi la totalidad de las localidades de mayor interés en la Comunidad Autónoma de Andalucía, mientras que tiene importantes lagunas en la Región de Murcia y en la provincia de Albacete (perteneciente a la Comunidad Autónoma de Castilla-La Mancha).Palabras clave. Dolomitófilo, dolomías, selección de reservas, endemismo, espacios naturales protegidos, flora.ABSTRACT. Floral richness and rarity in the dolomitic outcrops of the Baetic Ranges (southern Spain): a preliminary essay. The dolomitic areas of the Baetic Ranges house extremely peculiar plant communities. These communities are diverse and especially rich in endemic species. The vegetation and flora of the dolomitic outcrops have not been studied from a conservation point of view. This work is focused on the distribution, richness and current level of protection of these areas, consequently, it allows us to evaluate the efficacy of the protected areas network. In order to meet this goal, a “presence/absence” database of the dolomitic taxa has been carried out, according to UTM cells sized an area of 10 × 10 km. These cells have been used as “Operational Geographic Units” (OGU’s). In due course, the richness, the continuous and discontinuous rarity of every OGU have been evaluated. The results depicted the great importance of the Malacitano-Almijarense sector of the Baetic province (especially where the Trevenque mountain is located) as a spot of richness and endemicity of dolomitic taxa. In addition, the protected areas network appears to be quite efficient in meeting conservation objectives in the Region of Andalusia, whilst it is clearly deficient in the Region of Murcia and the Province of Albacete (included in the Region of Castilla-La Mancha).Key words. Dolomitic species, dolomites, selection of reserves, endemism, natural protected areas, flora.


2018 ◽  
pp. 137-148
Author(s):  
E. I. Rachkovskaya ◽  
Z. V. Karamysheva ◽  
N. P. Litvinova ◽  
I. Yu. Sumerina ◽  
V. N. Khramtsov ◽  
...  

On May 3, 2018 Elena Anatolievna Volkova ce­lebrates her anniversary. She is a highly qualified phytogeographer, thoughtful field researcher, expert in mountain vegetation of Asia, tireless traveler. The field of her scientific interests is the regularity of vegetation cover, small- and large-scale mapping of vegetation in different regions of Eurasia. She has made a great contribution to the study of the composition and structure of vegetation cover of complex and inaccessible arid and subarid mountain areas of Central Asia. E. Volkova began to work in deserts and steppes of Kazakhstan, and then 15 years studied arid plain and mountain regions of Mongolia. In Joint Soviet-Mongolian complex biological expedition of Academies of sciences of USSR and Mongolian People’s Republic E. Volkova investigated the deserts of Alashan Gobi, Trans-Altai Gobi and Dzhungarian Gobi. The result of these field works was a publication on the study of the relationship between the composition and structure of plant communities with the petrographic composition of rocks in melkosopochniks in different subzones and provinces of Gobi (Volkova, 1976); together with E. I. Rachkovskaya original vegetation maps of these extra-arid territories were created (Rachkovskaya, Volkova, 1977, 1980, etc.). The collected data on mountain vegetation were used to produce the vegetation map of Mongolia in the National Atlas (Karta..., 1990) and the monograph “Botanical geography of Mongolian and Gobi Altai” (Volkova, 1994). E. Volkova has made two vegetation maps: of Asia in atlas “Our Earth” (Волкова, 1996) and (together with I. Fedorova) of the World (scale 1: 60 000 000) for “Resources and Environment: World Atlas” (Volkova, Fedorova, 1998). In 2003 the monograph “Botanical geography of Kazakhstan and Central Asia (within the desert area)” was published in which E. Volkova is the author of a large section “Vegetation cover of mountains” and sub-section “Mountain provinces” in the section “Principles and basic units of regionalization” (Volkova, 2003a, b). After the collapse of the Soviet Union, most of the arid areas of the country became inaccessible for research, and E. Volkova’ interests have turned to the vegetation of the Northwest of European Russia (Le­ningrad Region). The Botanical Institute of Russian Academy of sciences organized complex researches for the purpose of inventory of natural complexes and their components in territories valuable for nature protection, and also of areas of economic importance. The result of this work was the organization of natural protected areas in the Leningrad Region and Saint Petersburg and the publication of the “Atlas of natural protected areas of St. Petersburg” (Atlas..., 2013, 2016) and 11 collective monographs (2001–2017) in which E.Volkova is the constant co-editor and author of the sections on vegetation. E. A. Volkova has published about 190 works, including articles in the journals “Proceedings of theRussianGeographical Society”, “Botanical journal”, “Vegetation of Russia”, “Biosphere”, the “Geobotanical mapping” (Volkova, Khramtsov 2018). She conti­nues to be an active field researcher and preparing new articles and monographs.


Geografie ◽  
2018 ◽  
Vol 123 (3) ◽  
pp. 295-316
Author(s):  
Lucia Bendíková ◽  
Markéta Šantrůčková ◽  
Zdeněk Lipský

Qualities of protected areas in Europe are the result of mutual collaboration, and the influence of natural conditions and historical development. Therefore, landscape protection has a wider scope. In addition to the protection of the landscape’s natural qualities, landscape protection also needs to identify human-driven impacts that support or directly affect landscape qualities. We have compared the development of land use/land cover in selected landscape conservation areas, and suitably selected referential areas in four time levels within a period of more than 150 years. The goals were to identify the types of land use that decrease, or increase the qualities of landscape, and to verify the hypothesis that landscape conservation areas, protected areas, have gone through a different land use/land cover development than the referential areas. The results of this comparison do not confirm our hypothesis. The most substantial changes in the rural areas in Czechia took place in a distant past not covered by the dataset used in this study.


2021 ◽  
Author(s):  
Alexandra Rodriguez ◽  
Sebastien Caron ◽  
Jean-Marie Ballouard

Behavioural studies are more an more implicated in species conservation. Determining individuals personality in the case of reintroduction operations may be very useful. Actually, indiviuals temperament may be associated to their dispersal capacities and their habilities to adapt to novel environments. Considered as asociable species, few studies have been conducted on reptiles and this is even worse in the case of endangered species. Hermann tortoise, Testudo hermanni, an endemic species from Mediterranean region is endangered because of the lost and modification of its habitats. Before conducting reintroduction actions it is important to have more information on individuals personality traits. We have tested the reaction of three groups of tortoises (domestic, wild and from the SOPTOM center) when confronted to a novel environment and to human presence. The aim was to discriminate individuals with bold and shy behaviours. Behavioural profiles are different between the three groups of tortoises, the domestic group appeared to be bolder than the wild one. Moreover, for the wild group, bold individuals travel longer distances in the field, sometimes outside the protected areas. Thus, it is important to take into account the personality of individuals choosen for translocation projects.


PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7155 ◽  
Author(s):  
Germán Baldi ◽  
Santiago Schauman ◽  
Marcos Texeira ◽  
Sofía Marinaro ◽  
Osvaldo A. Martin ◽  
...  

Background South America faces strong environmental pressures as a result of agriculture and infrastructure expansion and also of demographic growth, demanding immediate action to preserve natural assets by establishing protected areas. Currently, 7.1% of the (sub)continent is under strict conservation categories (I to IV, IUCN), but the spatial distribution of these 1.3 × 106 km2 is poorly understood. We evaluated the representation of nature within the networks of protected areas, map conservation priorities and assess demographic, economic or geopolitical causes of existing protection patterns. Methods We characterized nature representation by looking at two components: the extent and the equality of protection. The first refers to the fraction of territory under protection, while the second refers to the homogeneity in the distribution along natural conditions of this protected fraction. We characterized natural conditions by either 113 biogeographical units (specifically, ecoregions) or a series of limited and significant climatic, topographic and edaphic traits. We analyzed representation every ten years since 1960 at national and continental levels. In the physical approach, histograms allowed us to map the degree of conservation priorities. Finally, we ranked the importance of different economic or geopolitical variables driving the observed distributions with a random forest technique. Results Nature representation varied across countries in spite of its priority in conservation agendas. In Brazil, Peru and Argentina there are still natural conditions with no formal protection, while in Bolivia and Venezuela, protected areas incorporate the natural diversity in a more balanced manner. As protected networks have increased their extent, so did their equality across and within countries over time. Our maps revealed as top continental priorities the southern temperate, subhumid and fertile lowland environments, and other country-specific areas. Protection extent was generally driven by a low population density and isolation, while other variables like distance to frontiers, were relevant only locally (e.g., in Argentina). Discussion Our description of the spatial distribution of protected areas can help societies and governments to improve the allocation of conservation efforts. We identified the main limitations that future conservation efforts will face, as protection was generally driven by the opportunities provided by low population density and isolation. From a methodological perspective, the physical approach reveals new properties of protection and provides tools to explore nature representation at different spatial, temporal and conceptual levels, complementing the traditional ones based on biodiversity or biogeographical attributes.


2016 ◽  
Vol 12 (30) ◽  
pp. 152
Author(s):  
Jose Luis Muñoz Marcillo ◽  
Marcelo Andrade Mesía ◽  
Betty González Osorio

The "Mache-Chindul" -REMACH- Ecological Reserve is one of the 33 natural areas that make up the National System of Protected Areas - SNAP-, administered by the Ecuadorian government through the Ministry of Environment, MAE. This ecological reserve protects one of the few remnants of tropical dry Ecuador forest, as well as a variety of endemic species of flora and fauna, many of which are endangered, the study allowed us to determine the multitemporal cover change plant (natural forest, pasture and cultivated timberline) and fragmentation of forest area between 2002- 2012 with the implementation of programs GIS and ArcGIS Desktop 9.3 Er Mapper. Information of the study area was lifted from satellite Landsat 7 ETM (spatial resolution 30 m per pixel) to the same as a composition of pseudo color (RGB-431) and a classification applied supervised using the method of Minimum Distance. The ecological reserve has an area of 53,662 hectares of natural forest, equivalent to 44.7 % of total area, 23.1 % is regeneration or recovery of natural forest with an area of 27,707 hectares; the natural forest has undergone several interventions, considering the most affected and the peripheral area south of the rivet end, fragmentation was of 38,632 was equivalent to 32.2 % of the total area of the reserve, in the category of cultivated grass product the increase of the agricultural frontier and decreasing natural forest cover from the illegal extraction of wood, also the pressure from timber companies and colonization fronts, concerning the population index this has decreased from 5.71 to 5.39 hab / km2.


2020 ◽  
Vol 12 (15) ◽  
pp. 6123
Author(s):  
Changjun Gu ◽  
Pei Zhao ◽  
Qiong Chen ◽  
Shicheng Li ◽  
Lanhui Li ◽  
...  

Himalaya, a global biodiversity hotspot, has undergone considerable forest cover fluctuation in recent decades, and numerous protected areas (PAs) have been established to prohibit forest degradation there. However, the spatiotemporal characteristics of this forest cover change across the whole region are still unknown, as are the effectiveness of its PAs. Therefore, here, we first mapped the forest cover of Himalaya in 1998, 2008, and 2018 with high accuracy (>90%) using a random forest (RF) algorithm based on Google Earth Engine (GEE) platform. The propensity score matching (PSM) method was applied with eight control variables to balance the heterogeneity of land characteristics inside and outside PAs. The effectiveness of PAs in Himalaya was quantified based on matched samples. The results showed that the forest cover in Himalaya increased by 4983.65 km2 from 1998 to 2008, but decreased by 4732.71 km2 from 2008 to 2018. Further analysis revealed that deforestation and reforestation mainly occurred at the edge of forest tracts, with over 55% of forest fluctuation occurring below a 2000 m elevation. Forest cover changes in PAs of Himalaya were analyzed; these results indicated that about 56% of PAs had a decreasing trend from 1998 to 2018, including the Torsa (Ia PA), an area representative of the most natural conditions, which is strictly protected. Even so, as a whole, PAs in Himalaya played a positive role in halting deforestation.


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