Bibliografías temáticas / Endangered plants

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  1. Artículos de revistas
  2. Tesis
  3. Libros
  4. Capítulos de libros
  5. Actas de conferencias
  6. Informes

Literatura académica sobre el tema "Endangered plants"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 30 de julio de 2024

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Artículos de revistas sobre el tema "Endangered plants"

1

Allen, William H. "Reintroduction of Endangered Plants". BioScience 44, n.º 2 (febrero de 1994): 65–68. http://dx.doi.org/10.2307/1312203.

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Maunder, Mike y Simon C. Cropper. "Management of Endangered Plants". Kew Bulletin 50, n.º 2 (1995): 429. http://dx.doi.org/10.2307/4110653.

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Willis, Arthur J. "Endangered plants in Iran". New Phytologist 149, n.º 2 (febrero de 2001): 165. http://dx.doi.org/10.1046/j.1469-8137.2001.00043-3.x.

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Nelson, Jim. "Conference on Endangered Plants". Brittonia 38, n.º 1 (enero de 1986): 47. http://dx.doi.org/10.1007/bf02806761.

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Al Thani, Noora Jabor. "Endangered wild plants in Qatar". Qatar Foundation Annual Research Forum Proceedings, n.º 2010 (13 de diciembre de 2010): EEP10. http://dx.doi.org/10.5339/qfarf.2010.eep10.

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IWATSUKI, Kunio. "Endangered vascular plants in Japan". Proceedings of the Japan Academy, Series B 84, n.º 8 (2008): 275–86. http://dx.doi.org/10.2183/pjab.84.275.

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Subbaiyan, B., P. Samydurai, M. Karthik Prabu, R. Ramakrishnan y V. Thangapandian. "Inventory of Rare, Endangered and Threatened (RET) Plant Species in Maruthamalai Hills, Western Ghats of Tamilnadu, South India". Our Nature 12, n.º 1 (3 de marzo de 2015): 37–43. http://dx.doi.org/10.3126/on.v12i1.12255.

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The present study deal with identification of rare, endanger and threatened plants in Maruthamalai Hills, part of Southern Western Ghats of Coimbatore District, Tamilnadu. In this investigation 30 rare, endangered and threatened (RET) plant species belongs to 15 families were identified and documented. Names of plants and RET category was gathered from IUCN annual reports and standard research articles. Enumerated plants were categorized in rare, endangered, endemic and threatened, species such as Caralluma bicolor, Terminalia arjuna, Ceropegia juncea, Rubia cordifolia, Celastrus paniculatus, Gloriosa suberpa, Gymnema sylvestres and so on. Finally it has been suggested that the RET medicinal plants are need to be proper conservation and management plans before it lost forever. DOI: http://dx.doi.org/10.3126/on.v12i1.12255Our Nature (2014), 12(1): 37-43.
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Zhu, Hongjuan, Dan He, Xialan Cheng, Liufeng Chen, Zhenyuan Zhang, Yi Tang, Jing Yu y Dongmei Yang. "Unveiling Distribution Patterns and Community Characteristics of Rare and Endangered Plants in the Sanya River Basin, China". Forests 14, n.º 2 (18 de enero de 2023): 176. http://dx.doi.org/10.3390/f14020176.

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Wetlands have an important ecological function and economic value. However, with economic development and urban expansion, wetland plants have suffered serious damage. Rare and endangered plants are “thermometers” that reflect the health processes of their ecosystems. To better protect the wetlands in Sanya, China, we systematically investigated and analyzed the species, quantities, distributions, and community characteristics of the rare and endangered plants in the Sanya River basin using the sample and sample strip methods. We established a total of 152 quadrats, of which 46 contained rare and endangered plants. We identified 27 rare and endangered plants that mainly appeared in the tree and shrub layers. The dominant families and genera of the community were evident. However, the proportion of families and genera with fewer or single species was high, indicating that the species composition of the community is complex, and the plant species diversity is rich. The dominant species in each layer of the community were evident, and the rare and endangered plants are occasional species of the community. The community similarity in the urban areas was high, indicating that the rare and endangered plants in these areas require highly homogenous habitats. The community similarity in the suburbs was low, indicating that the rare and endangered plants in these areas are highly adaptable to different habitats. Threat factors and vegetation coverage degree had a significant impact on the number of species and population size of rare and endangered plants. Finally, according to our study and IUCN classification criteria for the endangered levels, Sonneratia × gulngai meets the CR (Critical Endangered) assessment criteria, thus we recommend upgrading it to the endangered level from VU (Vulnerable).
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Thornton, William C. "Should Endangered Plants Be Propagated Commercially?" Cactus and Succulent Journal 85, n.º 4 (julio de 2013): 143–44. http://dx.doi.org/10.2985/0007-9367-85.4.143.

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Schmid, Rudolf, J. Leigh, R. Boden y J. Briggs. "Extinct and Endangered Plants of Australia". Taxon 35, n.º 1 (febrero de 1986): 205. http://dx.doi.org/10.2307/1221080.

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Tesis sobre el tema "Endangered plants"

1

Robertson, Emma. "TRANSITIONS: Biophilia, Beauty and Endangered Plants". Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/17875.

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While the science continues to underline the increasing risks posed by climate change, rallying the public to the cause has proved increasingly difficult. A major challenge is finding alternatives to the despair, hopelessness and consequent sense of disempowerment that confronting the realities of climate change can provoke. It is also the case that particular silent aspects of the impact of climate change – for example on the future viability of certain plant species – receive less public and political attention than others, such as catastrophic weather events. Artists have been active in exploring the impact of climate change through a variety of aesthetic strategies in attempts to address these challenges and mobilise complex understandings of the phenomenon. The response of this thesis is to focus on a specific issue and location – endangered Australian plants – and to experiment with a range of different artistic approaches, filtered through the lens of biophilia and beauty. The experimental artwork produced builds and demonstrates a bridge between botanical science, endangered plant species, and art, in relation to climate change. The PhD research makes four substantial contributions. First, it presents a different perspective on the applied use of art as a mode of enquiry into climate change, through creative agency and advocacy on the focused theme of endangered Australian plants. Second, the research explores and assesses alternative methods for making and reconceptualising static drawings into moving images, as a strategy to engage artistically and positively with the negative ecopsychology and ecoanxiety of climate change. Third, newly initiated, collaborative projects with non-arts partners are deployed to enhance audience engagement through the application of drawings. In parallel to this, conventional international and national exhibitions, publications and workshops are also realised as additional contributions to knowledge within different communities. Fourth, the research results in a document which explores a hopeful reconnection with nature through applying and embracing an aesthetic of beauty and meditative mindfulness. A Transmedia Art method is utilised to enhance broader community understanding of Eco Art, using a mindful, practice based research process.
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Swarts, Nigel. "Integrated conservation of the rare and endangered terrestrial orchid Caladenia huegelii H.G. Reichb /". Connect to this title, 2007. http://theses.library.uwa.edu.au/adt-WU2008.0044.

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Filipski, Jules. "Reproductive biology of the endangered plant, Phlox hirsuta (E.E. Nelson)". View full-text version online, 2005. http://soda.sou.edu/awdata/060221b1.pdf.

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Thesis (M.S.) --Southern Oregon University, 2005.
"A thesis submitted to the Department of Biology and the Graduate School of Southern Oregon University in partial fulfillment of the requirements for the degree of Master of Science in Science." Includes bibliographical references (p. 69-75) Also available via Internet as PDF file through Southern Oregon Digital Archives: http://soda.sou.edu. Search Bioregion Collection.
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Kaye, Thomas N. "Population viability analysis of endangered plant species an evaluation of stochastic methods and an application to a rare prairie plant /". Connect to this title online, 2001. http://fresc.usgs.gov/products/thesis/kaye/thesis.html.

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Swarts, Nigel. "Integrated conservation of the rare and endangered terrestrial orchid Caladenia huegelii H.G. Reichb". University of Western Australia. School of Earth and Geographical Sciences, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0044.

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The Orchidaceae is characterized by a remarkably diverse range of life forms and some of the most highly specialized interactions with soil fungi and insect pollinators found in the flowering plants. Many species are rare or threatened with extinction either directly through loss of habitat or over-collection or, indirectly through debilitation or loss of mycorrhizal association or pollinator capacity. Australian temperate terrestrial orchids represent one of the most threatened groups in the Australian flora with many taxa clinging to existence in urban and rural bushland remnants, road verges and unprotected bushland. The aim of this study is to research and develop integrated conservation based on critical aspects of terrestrial orchid biology and ecology, towards the recovery of the rare and endangered Western Australian terrestrial orchid Caladenia huegelii. This study identified key aspects involved in an integrated conservation approach and research focused on conservation genetics, mycorrhizal interactions and in situ and ex situ conservation strategies for this species. Using polymorphic microsatellite molecular markers, high levels of genetic diversity were found within remnant populations of C. huegelii, while weak differentiation was observed among populations over the species geographic range. These results indicate historic genetic exchange between C. huegelii populations, a possible consequence of the sexually deceptive pollination strategy and the capacity for widespread seed dispersal. Symbiotic germination studies revealed compatibility barriers to C. huegelii germination with the orchid possessing a highly specific orchid-mycorrhizal association relative to common sympatric congeners. These results were reflected in a phylogenetic analysis of DNA sequences, revealing C. huegelii associates with only one endophyte species within the fungal family Sebacinaceae across its geographic range. Large scale in situ seed baiting demonstrated that endophytes compatible with C. huegelii were limited in distribution relative to common and widespread orchid species, a feature for C. huegelii that may be a major contributing factor in limiting the distributional range of the species. Detailed, within site seed baiting methods identified hotspots for mycorrhizal fungus compatible with C. huegelii that were unoccupied by the orchid. These mycorrhizal hotspots where used to investigate the effect of endophyte presence on survival of transplanted mature plants and seedling outplants. The in situ survival of glasshouse propagated seedlings was further optimized by incubating seedlings in growth containers before transfer to soil and outplanting seedlings in their second growing season. The findings of this study will substantially advance the recovery of C. huegelii and provide benchmark knowledge for similar projects with other rare and threatened terrestrial orchid species.
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Xego, Sibusiso. "Hydroponic propagation of Siphonochilus aethiopicus: an endangered medicinal plant". Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2421.

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Thesis (MTech (Horticultural Sciences))--Cape Peninsula University of Technology, 2017.
The increasing demand for medicinal plants has led into serious over-harvesting of wild populations and presents an opportunity for potential profitable cultivation. Production of medicinal plants in controlled environments particularly hydroponic technology provides opportunities for high quality biomass accumulation and optimizes production of secondary metabolites. Water availability and supplies are becoming scarce, thus search for innovative irrigation practices is desirable and vital. The proper irrigation interval and growing media can play a major role in increasing the water use efficiency. Thus, Siphonochilus aethiopicus was cultivated by means of the hydroponic technique, under various substrate combinations and watering regimes.
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Grant, Marissa Catherine Jernegan. "Survival strategies of the endangered Physaria ludoviciana (silvery bladderpod; Brassicaceae) /". View online, 2009. http://repository.eiu.edu/theses/docs/32211131592147.pdf.

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Sharma, Jyotsna. "Mycobionts, germination, and conservation genetics of federally threatened Platanthera praeclara (Orchidaceae) /". free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3060142.

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Mosime, Bonolo. "In vitro conservation of selected endangered plant species indigenous to the Cape Floristic Region, South Africa". Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2343.

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Thesis (MTech (Horticulture))--Cape Peninsula University of Technology, 2016.
This study focused on optimising four types of in-vitro conservation methods, namely: 1), micropropagation, 2) in-vitro slow growth, 3) seed germination and 4) cryopreservation for selected endangered plant species indigenous to the Cape Floristic Region. It is one of the targets set by United Nations millennium development goals, to integrate different conservation measures in order to preserve plant diversity and mitigate losses of genetic diversity. Therefore this study uses Phalaenopsis hybrids as a trial species that can be studied for the conservation of endangered Disa and Eulophia species through micropropagation and in vitro slow growth. Also conservation attempts on Leucadendron and Mimetes species that occur in the Cape Floristic Region were attemted to increase population densities by increasing germination percentages using smoke. Furthermore, the study attempted to store seeds by assessing different cooling rates for optimising cryopreservation measures for effective conservation. The use of tissue culture to increase propagules especially critically endangered species in South African has proven to be feasible. For the trial hybrids, shoot and protocorm explants of Phalaenopsis Psychosis Pink X P. No. 1; P. Large white X P. Large pink; P. No. 1 X P. Large pink; P. Mini pink X Brighton belle; and the P. aphrodite formed clusters of protocorms and shoots when cultured on ½ strength MS media supplemented with 10, 20 and 30gL-1 banana extract or ½ strength Murashige and Skoog, (1962) (MS) media supplemented with peptone. Continuous protocorms formation could therefore be obtained by culturing endangered Disa and Eulophia shoots and protocorms on banana containing media. Plantlet conversion from somatic embryos produced on 10gL-1 banana extract enriched media was successfully achieved on ½ strength MS supplemented with 20gL-1 sucrose and no plant growth regulators in the medium. However, optimum rooting was achieved on ½ strength MS supplemented with 30gL-1 of banana extract and this medium yielded the highest survival percentages for plantlet acclimatisation. Furthermore, ½ strength MS supplemented with 1gL-1 of peptone served as a stimulant for shoot development and protocorm formation. When coupled with banana extract at all stages of development, regeneration and rooting were enhanced.
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Walker, Charles Henry. "Biological and ecological attributes of some endangered vascular plants of southern Illinois /". Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1324370471&sid=4&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Libros sobre el tema "Endangered plants"

1

Landau, Elaine. Endangered plants. New York: Watts, 1992.

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Madulid, Domingo A. Endangered plants. Manila: Published for Pundasyon sa Pagpapaunlad ng Kaalaman sa Pagtuturo ng Agham, Ink. by Island Pub. House, Inc., 2000.

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Čeřovský, Jan. Endangered plants. London: Sunburst Books, 1995.

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Fandel, Jennifer. Endangered plants. Sioux Falls, SD: Lake Street Publishers, 2003.

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Niskern, Diana. Endangered species (plants). Washington, D.C: Science Reference Section, Science and Technology Division, Library of Congress, 1989.

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B, Chaudhuri A. Endangered medicinal plants. Delhi, India: Daya Publishing House, 2007.

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Niskern, Diana. Endangered species (plants). Washington, D.C: Science Reference Section, Science and Technology Division, Library of Congress, 1989.

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Niskern, Diana. Endangered species (plants). Washington, D.C: Science Reference Section, Science and Technology Division, Library of Congress, 1989.

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Southwestern Rare and Endangered Plant Conference (1992 Santa Fe, N.M.). Southwestern rare and endangered plants: Proceedings of the Southwestern Rare and Endangered Plant Conference. Santa Fe, N.M. (P.O. Box 1948, Santa Fe, 87504): New Mexico Forestry and Resources Conservation Division, Energy, Minerals and Natural Resources Dept., 1993.

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Miasek, Meryl A. Endangered plant species of the world and their endangered habitats: A compilation of the literature. Bronx, N.Y: Library of the New York Botanical Garden, 1985.

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Capítulos de libros sobre el tema "Endangered plants"

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Carr, John y Tema Milstein. "Manatees and fossil-fuel power plants". En Communicating Endangered Species, 218–32. London: Routledge, 2021. http://dx.doi.org/10.4324/9781003041955-18.

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Mukherjee, Dhiman. "Endangered Medicinal Plants of Temperate Regions: Conservation and Maintenance". En Medicinal Plants, 213–54. Boca Raton: Apple Academic Press, 2022. http://dx.doi.org/10.1201/9781003277408-9.

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Rieseberg, Loren H. y Susan M. Swensen. "Conservation Genetics of Endangered Island Plants". En Conservation Genetics, 305–34. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-2504-9_10.

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Qin, Haining, Xiaohua Jin y Lina Zhao. "Rare and Endangered Plants in China". En Conservation and Reintroduction of Rare and Endangered Plants in China, 21–31. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5301-1_2.

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Huang, Lu-qi y Chao-yi Ma. "Salvation of Rare and Endangered Medicinal Plants". En Molecular Pharmacognosy, 105–27. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4945-0_6.

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Wang, Xueyong, Khabriev Ramil Usmanovich, Linglong Luo, Wen Juan Xu y Jia Hui Wu. "Salvation of Rare and Endangered Medicinal Plants". En Molecular Pharmacognosy, 103–43. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9034-1_5.

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Ahmad, Sohail, Maria Faraz, Arshad Farid y Shakira Ghazanfar. "Threatened and Endangered Medicinal and Aromatic Plants". En Ethnobotany and Ethnopharmacology of Medicinal and Aromatic Plants, 59–77. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/b22842-4.

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Ren, Hai, Hongfang Lu, Hongxiao Liu y Zhanhui Xu. "Reintroduction of Rare and Endangered Plants in China". En Conservation and Reintroduction of Rare and Endangered Plants in China, 49–107. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5301-1_4.

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Abegaz, Berhanu M. y Joan Mutanyatta. "Bioactive Compounds from Some Endangered Plants of Africa". En Biodiversity, 71–78. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4419-9242-0_8.

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Zheng, Yuhong, Xin Shi y Li Fu. "Pharmacological Properties and Tissue Culture Method of Endangered Medicinal Plants". En Bioprospecting of Tropical Medicinal Plants, 1081–95. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-28780-0_45.

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Actas de conferencias sobre el tema "Endangered plants"

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Chernetskaya, A. G., T. V. Yunkevich y T. V. Kalenchuk. "ADDITIONAL METHODS FOR PRESERVING THE GENE POOL OF POPULATIONS OF RARE SPECIES OF MEDICINAL PLANTS". En SAKHAROV READINGS 2021: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2021. http://dx.doi.org/10.46646/sakh-2021-2-371-374.

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To effectively conserve the gene pool of protected plants ex situ, a wide range of methods and approaches is used, each of which has its own advantages and disadvantages. To date, considerable experience has been gained in the preservation of plant genetic resources, which are important mainly for the agricultural sector, using different temperature regimes; gene banks have been created all over the world. Unfortunately, cryopreservation of seeds and various other plant material is successfully used mainly for agricultural crops, and experiments to preserve the gene pool of rare and endangered plant species are not so widespread. It is necessary to investigate the possibility of sustainable reproduction of the gene pool of certain rare and endangered species. The use of microclonal reproduction of protected plants is an additional way to preserve their gene pool and a prerequisite for the repаtriation of species that are disappearing in nature. The development of effective methods of microclonal reproduction is the basis of work on the creation of in vitro genetic banks of rare and endangered plant species, as well as one of the promising directions for the conservation of biodiversity in general.
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Wei, Haochuan, Qianchi Zhang, Weixuan Gao y Xianghao Meng. "Construction and Application of the Knowledge Graph in Endangered Plants". En 2022 IEEE/ACIS 22nd International Conference on Computer and Information Science (ICIS). IEEE, 2022. http://dx.doi.org/10.1109/icis54925.2022.9882464.

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Echeverri Del Sarto, Julieta, María Celeste Gallia, Ana Ferrari y Guillermina A. Bongiovanni. "TISSUE PLANT CULTURE AS A NOVEL INDUSTRIAL STRATEGY TO PRODUCE BIOPHARMACEUTICALS FROM ENDANGERED PLANTS". En 24th International Academic Conference, Barcelona. International Institute of Social and Economic Sciences, 2016. http://dx.doi.org/10.20472/iac.2016.024.030.

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Raizer, O. B. y O. N. Khapilina. "Culture in vitro of rare and endemic species of Allium (A. ledebourianum, A. altaicum)". En 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.204.

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Rare and endemic Allium ledebourianum and Allium altaicum were introduced into the culture in vitro. When cultivated under conditions of slight osmotic stress, viable cultures of rare and endangered Allium species were obtained.
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He, Wenli, XingZhao Dai, Xinghua Le, Yu Fang, Bangyou Yan y Haiou Bao. "Information system of the rare endangered plants in Poyang Lake watershed". En 2015 4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icmmcce-15.2015.321.

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Achimova, A. A., Е. V. Zhmud, I. N. Kuban y M. B. Yamtyrov. "The study of rare and endangered species of plants in the Botanical gardens: traditional and modern approaches". En Problems of studying the vegetation cover of Siberia. TSU Press, 2020. http://dx.doi.org/10.17223/978-5-94621-927-3-2020-5.

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Liu, Yuhuai, Zhang Xiaofe, Wende Huang, Dajiang He y Xianwu Mi. "A Framework for Rare and Endangered Plants Protection Based on Beidou and Digital Twins Technology". En 2021 International Conference on Electronic Information Technology and Smart Agriculture (ICEITSA). IEEE, 2021. http://dx.doi.org/10.1109/iceitsa54226.2021.00034.

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Churikova, O. A. y A. A. Krinitsina. "PECULIARITIES OF INTRODUCTION AND PROPAGATION IN STERILE CULTURE OF SOME SPECIES OF RARE AND ENDANGERED PLANTS". En СОВРЕМЕННЫЕ ПРОБЛЕМЫ ИНТРОДУКЦИИ И СОХРАНЕНИЯ БИОРАЗНООБРАЗИЯ РАСТЕНИЙ. Воронеж: Цифровая полиграфия, 2022. http://dx.doi.org/10.17308/978-5-907283-86-2-2022-232-240.

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Derjanschi, Valeriu. "Some rare Heteroptera species (Hemiptera) from the „Cobîleni” natural reserve, Republic of Moldova". En Xth International Conference of Zoologists. Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/icz10.2021.31.

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A list of the some rare heteroptera species from the „Cobîleni” Natural Reserve is published. The list contains 9 species from 5 families: Corixidae (3 species), Anthocoridae (1), Miridae (3), Lygaeidae (1) and Pentatomidae – 1 species. Data on bio-ecology and host plants are given. It is noted that the „Cobîleni” Reserve are the guarantor of the preservation of both typical biotopes and rare and endangered species of true bugs.
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Tao, Zhang, Wang Wei, Gary Z. Wang, Hongyan Luo, Cunzhu Liang, Jiahui Liu, Huijun An, Hao Pei, Huidong Zhong y Xiaojun Chen. "Using AHP to analyze and ascertain the priority protective order of endangered plants in East Alashan-West Erdos". En SPIE Optics + Photonics, editado por Wei Gao y Susan L. Ustin. SPIE, 2006. http://dx.doi.org/10.1117/12.681226.

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Informes sobre el tema "Endangered plants"

1

Peter Breslin, Peter Breslin. Next Generation Conservation Strategies for Endangered Plants. Experiment, noviembre de 2017. http://dx.doi.org/10.18258/10273.

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Bekessy, Sarah, Georgia Garrard y Tasha Wibawa. Cities can be safe havens for endangered plants and animals. Monash University, octubre de 2022. http://dx.doi.org/10.54377/1a63-64de.

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Chass?, Michael. Restoring the endangered San Francisco lessingia to Fort Funston, GGNRA: Final project completion report. National Park Service, 2024. http://dx.doi.org/10.36967/2302635.

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San Francisco lessingia (lessingia germanorum) is an endangered plant species found in dune habitats on the northern San Francisco Peninsula of California, USA. Expanding habitat for this species through dune restoration is a key component of its recovery plan. The Golden Gate National Recreation Area (GGNRA) established a project to reintroduce San Francisco lessingia to potential habitat at Fort Funston. We (park staff, contractors, and volunteers) prepared restoration areas through invasive plant removal and installation of protective fencing. Over a three-year period, we collected seeds of San Francisco lessingia from the Daly City population throughout the summer fruiting season. GGNRA nursery staff propagated San Francisco lessingia and other associated dune plants, which were planted and direct seeded at Fort Funston. A monthly volunteer stewardship program was established to support ongoing habitat restoration at Fort Funston. Park staff have initiated annual monitoring of San Francisco lessingia. As of the writing of this report, a small population of San Francisco lessingia has persisted in the primary reintroduction site. Although it is too early to determine if the reintroduction is successful in the long term, the restored dune habitats now support a more diverse dune flora with greatly reduced invasive plant threats.
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Sackschewsky, Michael R. Threatened and Endangered Species Evaluation for Operating Commercial Nuclear Power Generating Plants. Office of Scientific and Technical Information (OSTI), enero de 2004. http://dx.doi.org/10.2172/15010482.

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Sackschewsky, M. R. Threatened and endangered species evaluation for 75 licensed commercial nuclear power generating plants. Office of Scientific and Technical Information (OSTI), marzo de 1997. http://dx.doi.org/10.2172/475640.

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Hohmann, Matthew y Wade Wall. Operational-scale demonstration of propagation protocols and comparative demographic monitoring for reintroducing five southeastern endangered and at-risk plants : final report. Construction Engineering Research Laboratory (U.S.), marzo de 2018. http://dx.doi.org/10.21079/11681/26525.

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Goswami, Omanjana y Stacy Woods. Waste Deep: How Tyson Foods Pollutes US Waterways and Which States Bear the Brunt. Union of Concerned Scientists, abril de 2024. http://dx.doi.org/10.47923/2024.15384.

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Tyson Foods, the nation’s largest meat and poultry producer, released hundreds of millions of pounds of pollutants from its slaughterhouses and processing plants into local waterways across the United States between 2018 and 2022. Water pollutants from Tyson plants pose a risk to people and the environment and include large amounts of nitrogen and phosphorus. These nutrients feed algal blooms that clog water infrastructure, exacerbate asthma and other respiratory conditions, and contribute to dead zones that harm fish, shellfish, and people. Many of these facilities are also located close to federally defined critical habitats for endangered or threatened species. This analysis adds to a broader critique of Tyson Foods and the impact of this megacorporation on communities, consumers, farmers, and workers. Policymakers can reduce the damage Tyson causes by tightening wastewater pollution standards, better enforcing discharge limits, and cracking down on the corporate consolidation that enables Tyson’s excesses.
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Raikow, David, Jacob Gross, Amanda McCutcheon y Anne Farahi. Trends in water quality and assessment of vegetation community structure in association with declining mangroves: A condition assessment of American Memorial Park. National Park Service, 2023. http://dx.doi.org/10.36967/2301598.

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American Memorial Park (AMME) in Saipan contains a rare mangrove wetland that is known to support several endangered species. Through monitoring water quality and vegetation characteristics of the wetland for >10 years we documented a declining mangrove population, an increase in invasive plant species, and declining surface water salinity. Comprehensive surveys conducted in 2014 and 2019 quantified declines in the plant community observed by park staff. Surface water salinity declined from 2009 to 2018 and no other trend in surface water quality was observed. Over the time period of the present study, AMME experienced shifts in annual rainfall conditions that could be associated with ENSO cycles. Dry conditions beginning in late 2016 and continuing through mid-2018 resulted in some surface water sampling sites completely drying. Several stressors may have contributed to declines in mangroves adapted to saturated soils directly and allowed competing plants to proliferate, including disruption of hydrologic connectivity with marine waters resulting in reduced surface water salinity, reduced rainfall causing dry soil conditions, and physical storm damage to canopies. Recommendations include study of groundwater salinity, maintaining or modifying a culvert subject to filling with sediment or other excavation work to improve saline water flow to the wetland at high tides, the establishment of a new groundwater monitoring well, adding a surface water monitoring station near the culvert, conducting a spatial assessment of the mangrove habitat suitability within the mangrove wetland, and developing or assisting with mangrove interpretive and outreach programs.
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Dawson, William O. y Moshe Bar-Joseph. Creating an Ally from an Adversary: Genetic Manipulation of Citrus Tristeza. United States Department of Agriculture, enero de 2004. http://dx.doi.org/10.32747/2004.7586540.bard.

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Citrus is one of the major agricultural crops common to Israel and the United States, important in terms of nutrition, foreign exchange, and employment. The economy of both citrus industries have been chronically plagued by diseases caused by Citrus tristeza virus (CTV). The short term solution until virus-resistant plants can be used is the use of mild strain cross-protection. We are custom designing "ideal" protecting viruses to immunize trees against severe isolates of CTV by purposely inoculating existing endangered trees and new plantings to be propagated as infected (protected) citrus budwood. We crossed the substantial technological hurdles necessary to accomplish this task which included developing an infectious cDNA clone which allows in vitro manipulation of the virus and methods to then infect citrus plants. We created a series of hybrids between decline-inducing and mild CTV strains, tested them in protoplasts, and are amplifying them to inoculate citrus trees for evaluation and mapping of disease determinants. We also extended this developed technology to begin engineering transient expression vectors based on CTV as tools for genetic improvement of tree crops, in this case citrus. Because of the long periods between genetic transformation and the ultimate assay of mature tree characteristics, there is a great need for an effective system that allows the expression or suppression of target genes in fruiting plants. Virus-based vectors will greatly expedite progress in citrus genetic improvement. We characterized several components of the virus that provides necessary information for designing virus-based vectors. We characterized the requirements of the 3 ’-nontranslated replication promoter and two 3 ’-ORF subgenomic (sg) mRNA controller elements. We discovered a novel type of 5’-terminal sgRNAs and characterized the cis-acting control element that also functions as a strong promoter of a 3 ’-sgRNA. We showed that the p23 gene controls negative-stranded RNA synthesis and expression of 3 ’ genes. We identified which genes are required for infection of plants, which are host range determinants, and which are not needed for plant infection. We continued the characterization of native dRNA populations and showed the presence of five different classes including class III dRNAs that consists of infectious and self-replicating molecules and class V dRNAs that contain all of the 3 ’ ORFs, along with class IV dRNAs that retain non-contiguous internal sequences. We have constructed and tested in protoplasts a series of expression vectors that will be described in this proposal.
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Pavlovic, Noel, Barbara Plampin, Gayle Tonkovich y David Hamilla. Special flora and vegetation of Indiana Dunes National Park. National Park Service, 2024. http://dx.doi.org/10.36967/2302417.

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The Indiana Dunes (comprised of 15 geographic units (see Figure 1) which include Indiana Dunes National Park, Dunes State Park, and adjacent Shirley Heinze Land Trust properties) are remarkable in the Midwest and Great Lakes region for the vascular plant diversity, with an astounding 1,212 native plant species in an area of approximately 16,000 acres! This high plant diversity is the result of the interactions among postglacial migrations, the variety of soil substrates, moisture conditions, topography, successional gradients, ?re regimes, proximity to Lake Michigan, and light levels. This richness is all the more signi?cant given the past human alterations of the landscape resulting from logging; conversion to agriculture; construction of transportation corridors, industrial sites, and residential communities; ?re suppression; land abandonment; and exotic species invasions. Despite these impacts, multiple natural areas supporting native vegetation persist. Thus, each of the 15 units of the Indiana Dunes presents up to eight subunits varying in human disturbance and consequently in ?oristic richness. Of the most signi?cant units of the park in terms of number of native species, Cowles Dunes and the Dunes State Park stand out from all the other units, with 786 and 686 native species, respectively. The next highest ranked units for numbers of native species include Keiser (630), Furnessville (574), Miller Woods (551), and Hoosier Prairie (542). The unit with lowest plant richness is Heron Rookery (220), with increasing richness in progression from Calumet Prairie (320), Hobart Prairie Grove (368), to Pinhook Bog (380). Signi?cant natural areas, retaining native vegetation composition and structure, include Cowles Bog (Cowles Dunes Unit), Howes Prairie (Cowles Dunes), Dunes Nature Preserve (Dunes State Park), Dunes Prairie Nature Preserve (Dunes State Park), Pinhook Bog, Furnessville Woods (Furnessville), Miller Woods, Inland Marsh, and Mnoke Prairie (Bailly). Wilhelm (1990) recorded a total of 1,131 native plant species for the ?ora of the Indiana Dunes. This was similar to the 1,132 species recorded by the National Park Service (2014) for the Indiana Dunes. Based on the nomenclature of Swink and Wilhelm (1994), Indiana Dunes National Park has 1,206 native plant species. If we include native varieties and hybrids, the total increases to 1,244 taxa. Based on the nomenclature used for this report?the Flora of North America (FNA 2022), and the Integrated Taxonomic Information System (ITIS 2022)?Indiana Dunes National Park houses 1,206 native vascular plant species. As of this writing (2020), the Indiana Dunes is home to 37% of the species of conservation concern in Indiana (241 out of 624 Indiana-listed species): state extirpated = 10 species, state endangered = 75, and state threatened = 100. Thus, 4% of the state-listed species in the Indiana Dunes are extirpated, 31% endangered, and 41% threatened. Watch list and rare categories have been eliminated. Twenty-nine species once documented from the Indiana Dunes may be extirpated because they have not been seen since 2001. Eleven have not been seen since 1930 and 15 since 1978. If we exclude these species, then there would be a total of 1,183 species native to the Indiana Dunes. Many of these are cryptic in their life history or diminutive, and thus are di?cult to ?nd. Looking at the growth form of native plants, <1% (nine species) are clubmosses, 3% (37) are ferns, 8% (297) are grasses and sedges, 56% (682) are forbs or herbs, 1% (16) are herbaceous vines, <1% (7) are subshrubs (woody plants of herbaceous stature), 5% (60) are shrubs, 1% (11) are lianas (woody vines), and 8% (93) are trees. Of the 332 exotic species (species introduced from outside North America), 65% (219 species) are forbs such as garlic mustard (Alliaria petiolata), 15% (50 species) are graminoids such as phragmites (Phragmites australis ssp. australis), 2% (seven species) are vines such as ?eld bindweed (Convulvulus arvensis), <1% (two species) are subshrubs such as Japanese pachysandra (Pachysandra terminalis), 8% (28 species) are shrubs such as Asian bush honeysuckle (Lonicera spp.), 1% (three species) are lianas such as oriental bittersweet (Celastrus orbiculatus), and 8% (23 species) are trees such as tree of heaven (Ailanthus altissimus). Of the 85 adventive species, native species that have invaded from elsewhere in North America, 14% (11 species) are graminoids such as broom sedge (Andropogon virginicus), 57% (48 species) are forbs such as fall phlox (Phlox paniculata), 5% (six species) are shrubs such as Carolina allspice (Calycanthus floridus), 3% (two species) are subshrubs such as holly leaved barberry (Berberis repens), 1% (one species) is a liana (trumpet creeper (Campsis radicans), 3% two species) are herbaceous vines such as tall morning glory (Ipomoea purpurea), and 17% (15 species) are trees such as American holly (Ilex opaca). A total of 436 species were found to be ?special? based on political rankings (federal and state-listed threatened and endangered species), species with charismatic ?owers, and those that are locally rare.
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