scholarly journals Caryological and physiological characteristics of rare species Potentilla porphyrantha Juz. (Rosaceae) in Armenia

2020 ◽  
Vol 24 ◽  
pp. 00030
Author(s):  
Karine Janjughazyan
Keyword(s):  
Rare Species ◽  
Water Regime ◽  
Botanical Garden ◽  
Included Study ◽  
Physiological Characteristics ◽  
Ex Situ ◽  
Physiological Investigation ◽  
In Situ Conditions ◽  
Viable Seeds

Caryological and physiological features of rare species Potentilla porphyrantha Juz. were investigated. It was shown that this species is diploid with 2n = 14 (x = 7). Physiological investigation included study of water regime, intensity of transpiration and photosynthesis. It was shown, that this species growing in-situ conditions on Amulsar Mountain (2900 m a.s.l.) now is very good adapted to ex-situ conditions in the Sevan botanical garden (1900 m a.s.l.). It grows very well, bloom and produce viable seeds, and in the future could be reintroduced into nature.

scholarly journals Interactions between coral propagules in aquarium and field conditions

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Poh Leong Loo ◽  
Anqi Li ◽  
Koh Siang Tan
Keyword(s):  
Scleractinian Coral ◽  
Interspecific Interactions ◽  
Optimal Growth ◽  
Interspecific Interaction ◽  
Ex Situ ◽  
Tissue Loss ◽  
Intraspecific Interaction ◽  
Growth And Survival ◽  
In Situ Conditions

AbstractThe effects of intraspecific and interspecific interactions between three species of scleractinian coral micro-colonies, namely Lithophyllon undulatum, Turbinaria mesenterina and Platygyra sinensis were evaluated for their survivorship, tissue loss and growth in both field (in-situ) and aquarium (ex-situ) conditions over 12 weeks. Regardless of environmental conditions and interactions, L. undulatum survived better (91.7 ± 6.2%) than T. mesenterina (75.0 ± 25.0%) and P. sinensis (60.4 ± 39.5%). Similarly, L. undulatum registered the lowest tissue loss (0.5 ± 0.7%) as compared to T. mesenterina (14.3 ± 19.4%) and P. sinensis (22.0 ± 30.0%). However, P. sinensis gained more weight (3.2 ± 5.2 g) than either T. mesenterina (2.7 ± 2.4 g) or L. undulatum (0.8 ± 1.1 g). In both environments, all three species in intraspecific interaction generally had higher survivorship, lower tissue loss and better growth than those in interspecific interaction except the latter in in-situ conditions had a twofold increase in growth (5.8 ± 3.7 g) than the former in-situ conditions (2.8 ± 3.7 g). Hence, all three species are potentially suitable for transplantation and mariculture except perhaps for P. sinensis which performed poorly in ex-situ conditions. Corals can be transplanted either with different colonies of the same species or together with other coral taxa. This study demonstrated that L. undulatum should be transplanted between T. mesenterina and P. sinensis for optimal growth and survival.

Concurrent in-situ measurement of flow capacity, gas content and saturation

2013 ◽  
Vol 53 (1) ◽  
pp. 273
Author(s):  
Quentin Morgan ◽  
John Pope ◽  
Peter Ramsay
Keyword(s):  
Field Trials ◽  
Gas Content ◽  
Ex Situ ◽  
Test Procedures ◽  
Flow Capacity ◽  
In Situ Conditions ◽  
Overall Performance ◽  
Testing Techniques ◽  
Cost Implications

A new core-less testing capability has been developed to provide concurrent measurements of coal seam flow capacity and gas content at in-situ conditions. The fluid-based measurement principles are intended to overcome time constraints, accuracy limitations, and cost implications of discrete measurements attributed to traditional ex-situ measurements on core samples. Details of measurement principles, associated enabling technologies, and generic test procedures have been disclosed in a previous publication. In 2012 a number of field trials were conducted with this new service for both coal mine operators and CSG operators. This peer-reviewed paper will detail pre-job planning, well site execution, and data analysis for one of these trials, which involved testing several seams across two wells, and will illustrate comparison with data acquired using conventional testing techniques from offset wells. This peer-reviewed paper will also highlight key learnings and overall performance, and explain how the learned lessons can be applied to improve testing efficacy and data quality.

scholarly journals Rare species of Tulipa (Liliaceae) from Tashkent Botanical Garden

2020 ◽  
Vol 6 ◽  
pp. 385-397
Author(s):  
Vladimir P. Pechenitsyn ◽  
Mirabdulla D. Turgunov ◽  
Natalya Yu. Beshko ◽  
Davlatali A. Abdullaev
Keyword(s):  
Rare Species ◽  
Botanical Garden ◽  
Ex Situ ◽  
The Republic

Biomorphological features of 14 rare Tulipa species listed in the Red Book of the Republic of Uzbekistan (Tulipa affinis, T. carinata, T. ferganica, T. fosteriana, T. greigii, T. ingens, T. kaufmanniana, T. korolkowii, T. lanata, T. micheliana, T. scharipovii, T. tubergeniana, T. uzbekistanica and T. vvedenskyi) were studied under ex situ conditions in the Tashkent Botanical Garden. It has been found, that all studied species successfully grow and bear fruits ex situ. All 14 species are able to autogamy; even solitary generative specimens regularly produce seeds. This feature significantly facilitates the further breeding of rare species of tulips. Considering the heterospermy and irregular quality of seedlings, the most rapidly developing individuals should be selected for cultivation and reintroduction.

scholarly journals Ex situ Conservation of Three Endemic and/or Endangered Dianthus Species

2013 ◽  
Vol 41 (1) ◽  
pp. 73 ◽  
Author(s):  
Victoria CRISTEA ◽  
Liliana JARDA ◽  
Irina HOLOBIUC
Keyword(s):  
Ex Situ Conservation ◽  
Positive Impact ◽  
Botanical Garden ◽  
Ex Situ ◽  
First Year ◽  
Genetic Uniformity ◽  
Current Context ◽  
Different Populations

Within the current context of declining biodiversity, the botanical gardens play an essential role in its conservation. Dianthus callizonus, D. glacialis ssp. gelidus and D. spiculifolius are the species that we seek to preserve in "Alexandru Borza" Botanical Garden of Cluj-Napoca (Romania). Several replicates were collected for each taxon from different populations in order to avoid the genetic uniformity. The material collected from the natural sites, was planted on a rockery, specially designed for this collection in the Botanical Garden. At the time of planting, each individual was sampled for setting up an in vitro collection and further biochemical and molecular analyses. In case of ex situ outdoor conservation of the three Dianthus species, 80.6% of the individuals collected in the field survived during the first year but the percentage decreased drastically after four years. In the case of in situ collected individuals, as well as in the case of in vitro individuals, D. spiculifolius had the best ability to acclimatize in the Botanical Garden, and D. callizonus presented the lowest number of surviving individuals. The ex vitro acclimatization of the plantlets had 80% efficiency at 10ºC, using three different substrates: soil and pearl stone mix 1/1, soil and sand mix 1/1 and pearl stone. All the three species are preserved in vitro, whereas the plantlets are acclimatized outdoors. Ex situ conservation of these species will have a positive impact on the biodiversity conservation.

scholarly journals Comparing Genetic Diversity in Three Threatened Oaks

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 561
Author(s):  
Emma Suzuki Spence ◽  
Jeremie B. Fant ◽  
Oliver Gailing ◽  
M. Patrick Griffith ◽  
Kayri Havens ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Size ◽  
Rare Species ◽  
Genetic Erosion ◽  
Geographic Range ◽  
Range Size ◽  
Ex Situ ◽  
Botanic Gardens ◽  
Geographic Range Size

Genetic diversity is a critical resource for species’ survival during times of environmental change. Conserving and sustainably managing genetic diversity requires understanding the distribution and amount of genetic diversity (in situ and ex situ) across multiple species. This paper focuses on three emblematic and IUCN Red List threatened oaks (Quercus, Fagaceae), a highly speciose tree genus that contains numerous rare species and poses challenges for ex situ conservation. We compare the genetic diversity of three rare oak species—Quercus georgiana, Q. oglethorpensis, and Q. boyntonii—to common oaks; investigate the correlation of range size, population size, and the abiotic environment with genetic diversity within and among populations in situ; and test how well genetic diversity preserved in botanic gardens correlates with geographic range size. Our main findings are: (1) these three rare species generally have lower genetic diversity than more abundant oaks; (2) in some cases, small population size and geographic range correlate with genetic diversity and differentiation; and (3) genetic diversity currently protected in botanic gardens is inadequately predicted by geographic range size and number of samples preserved, suggesting non-random sampling of populations for conservation collections. Our results highlight that most populations of these three rare oaks have managed to avoid severe genetic erosion, but their small size will likely necessitate genetic management going forward.

scholarly journals Rare species of natural steppe flora – on prospects for their conservation in Samara region in situ and ex situ

2021 ◽  
Vol 817 (1) ◽  
pp. 012043
Author(s):  
L M Kavelenova ◽  
O A Kuzovenko ◽  
I V Ruzaeva ◽  
S A Rozno ◽  
A V Pomogaybin ◽  
...  
Keyword(s):  
Rare Species ◽  
Ex Situ

scholarly journals Achievements in the Domain of Geobotany and Forestry in the Last 70 Years

2021 ◽  
Vol XII (2(21)) ◽  
Author(s):  
Gheorghe Postolache ◽  
◽  
◽  
Keyword(s):  
Biological Sciences ◽  
Plant Diversity ◽  
In Situ Conservation ◽  
Botanical Garden ◽  
Ex Situ ◽  
Marsh Vegetation ◽  
Protected Natural Areas ◽  
The Republic ◽  
New Research

The achievements of the Geobotany and Forestry Laboratory over the 70 years of activity of “Alexandru Ciubotaru” National Botanical Garden (Institute) have been described. Brief information has been presented about institutional and editorial projects. Based on scientific research, the ways of formation and distribution of plant communities have been determined, new research methods, scientific concepts, recommendations and publications have been elaborated. For the in-situ conservation of plant diversity, research was conducted in protected natural areas of the Republic of Moldova. For the ex-situ conservation of plant diversity, in 1972, the Vegetation of Moldova Exhibition was created and it now includes 12 forest mini-exhibitions, a mini-exhibition with steppe vegetation, a mini-exhibition with meadow vegetation and a mini-exhibition with aquatic and marsh vegetation. Fourteen doctoral theses and 3 habilitation dissertations in biological sciences have been defended.

scholarly journals Dynamic guardianship of potato landraces by Andean communities and the genebank of the International Potato Center

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Sophia Lüttringhaus ◽  
Willy Pradel ◽  
Víctor Suarez ◽  
Norma C. Manrique-Carpintero ◽  
Noelle L. Anglin ◽  
...  
Keyword(s):  
Geographic Location ◽  
Evidence Base ◽  
Ex Situ ◽  
Distribution Data ◽  
Survival Times ◽  
Structured Interviews ◽  
International Potato ◽  
In Situ Conditions ◽  
Dynamic Exchange

Abstract Background Potato landraces (Solanum spp.) are not only crucial for food security and sustenance in Andean communities but are also deeply rooted in the local culture. The crop originated in the Andes, and while a great diversity of potato persists, some landraces have been lost. Local communities and the genebank of the International Potato Center (CIP) partnered to re-establish some of these landraces in situ by supplying clean seed potatoes to farmers. Over time, the genebank formalized a repatriation program of potato landraces. Repatriation is the process of returning native germplasm back to its place of origin, allowing a dynamic exchange between ex situ and in situ conditions. So far, no comprehensive description of CIP’s repatriation program, the changes it induced, nor its benefits, has been carried out. Methods We addressed this research gap by analyzing CIP genebank distribution data for repatriated accessions, conducting structured interviews with experts of the repatriation program, and applying duration and benefit analyses to a survey dataset of 301 households. Results Between 1997 and 2020, 14,950 samples, representing 1519 accessions, were distributed to 135 communities in Peru. While most households (56%) abandoned the repatriated material by the fourth year after receiving it, the in situ survival probability of the remaining material stabilized between 36% in year 5 and 18% in year 15. Households where the plot manager was over 60 years old were more likely to grow the repatriated landraces for longer periods of times. While male plot management decreased survival times compared to female plot management, higher levels of education, labor force, wealth, food insecurity, and geographic location in the southern part of Peru were associated with greater survival times. Most farmers reported nutritional and cultural benefits as reasons for maintaining landrace material. Repatriated potatoes enabled farmers to conserve potato diversity, and hence, re-establish and broaden culinary diversity and traditions. Conclusions Our study is the first to apply an economic model to analyze the duration of in situ landrace cultivation by custodian farmers. We provide an evidence base that describes the vast scope of the program and its benefits.

scholarly journals Drosera in Ukraine: Ecological, сhorological specifics and phytosozonomical characteristics

2019 ◽  
Vol 27 (1) ◽  
pp. 3-15
Author(s):  
V. V. Konishchuk ◽  
O. I. Skakalska
Keyword(s):  
Nature Reserve ◽  
Botanical Garden ◽  
Ex Situ ◽  
Phylogenetic Studies ◽  
Drosera Rotundifolia ◽  
New Locations ◽  
Nature Park ◽  
Data Book ◽  
High Degree

The paper presents a chorologically systematized description of all taxa of the Drosera L. genus in Ukraine. We performed an analysis of environmental conditions, phytocoenotic characteristics and found new locations of sundew. We generalized the morphometric parameters and proposed a concept – “leaf roundness index”; and recommended including Drosera rotundifolia, Drosera x obovata in the next edition of the Red Data Book of Ukraine due to the contraction of their habitat and their high degree of vulnerability to unfavourable environmental factors and anthropogenic impact; we reccommend growing Drosera ex-situ on the example of Kremenets Botanical Garden with further repatriation in-situ; proved the efficiency of the proposed methods of farming cultivation. The paper substantiates the complex of phytosozological criteria, measures for protection and reproduction of the endangered species of Drosera genus. We suggested a hypothesis about the independence of the taxon of Drosera x obovata. Despite the fact that Drosera longifolia x D. rotundifolia is generally considered to be sterile hybrid, individuals breed vegetatively, are fertile and retain germinability after germination, and have a clearly specific ecotype, sometimes loci are isolated from parent species. To isolate the Drosera x obovata as a single taxon, additional phylogenetic studies are needed, but as a rare, disappearing taxon it needs protection and background monitoring of populations. The area of greatest phytosozological value for sundews in Ukraine is Western Polissia (Volyn, Rivne regions) (D. longifolia – 31, 20 sites, D. intermedia – 31 and 30 respectively). Drosera longifolia is on average distributed slightly further south in Ukraine than D. intermedia, although both taxa are confined to the humid, boreal zone. D. rotundifolia is most widespread in the humid zone (Polissia, the Carpathians). Despite the presence of Drosera x obovata in the Cheremskyi, Rivnenskyi Nature Reserve, Shatskyi National Nature Park, and several landscape reserves, the taxon is continuing to disappear due to succession, afforestation, water regime change etc.

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