Готові списки джерел за темами / Orchid conservation

Зміст

Статті в журналах
Дисертації
Книги
Частини книг
Тези доповідей конференцій

Добірка наукової літератури з теми "Orchid conservation"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 19 лютого 2022

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Orchid conservation".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Статті в журналах з теми "Orchid conservation"

Sulistya Dewi, Endah Rita, Ary Susatyo Nugroho, and Maria Ulfa. "Menuju Desa Konservasi Aggrek di Desa Ngresep Balong, Limbangan Kendal." Journal of Dedicators Community 2, no. 2 (July 9, 2018): 100–107. http://dx.doi.org/10.34001/jdc.v2i2.702.

Повний текст джерела

Анотація:

Forest Ungaran Mountain has a variety of plant diversity, one of which is a kind of forest orchids. Along with the wild hunting of Ungaran Mountain orchard and the change of function and clearing of forest land, then the popuasi and natural habitat for Ungaran Mountain Orchid species increasingly reduced. This makes the villagers of Ngesrep Balong feel worried about the species will disappear or extinct. To anticipate this, the villagers realized that the effort to conserve orchid of Ungaran Mountain needs to be done. The main problem is that villagers do not have enough skills to do conservation effort independently. Therefore it is very necessary to do counseling and training through this PPDM activity so that villagers gain knowledge and skills in conducting activities of conservation, cultivation until production of Ungaran Mountain Orchid independently. At Mount Ungaran Resort Limbangan Kendal District, found 12 species of orchids derived from 8 genera. Of the 12 species are 10 species of which are orchids epiphytes and two other types of terrestrial orchids. Looking at the potential, it can be concluded that Ngesrep Balong Village has potential to be used as Conservation Village of Orchid

Стилі APA, Harvard, Vancouver, ISO та ін.

Farokhah, Tria, Sri Utami, and Jumari Jumari. "Diversity and Abundance of Orchids at Gebugan Nature Reserve in Semarang, Indonesia." Biosaintifika: Journal of Biology & Biology Education 10, no. 2 (August 29, 2018): 284–90. http://dx.doi.org/10.15294/biosaintifika.v10i2.14579.

Повний текст джерела

Анотація:

Orchid is a plant with a high aesthetic value.The existence of orchids directly by the community from their natural habitat, causing the existence of orchid in nature was threatened. The potential of orchid diversity in the Gebugan Nature Reserve area needs exploration to maintain its sustainability. This research would explore the diversity and abundance of orchid species and determined the environmental conditionof Gebugan Nature Reserve. The study was done on 2 stations with altitude difference are 900 m asl and 1045 m asl. Five plots of 10 m x 10 m were systematically constructed at each station with a distance of plots 50 meters. Species of orchids found in the Gebugan Nature Reserve were 12 species, including 11 species of epiphytic orchids and 1 species of terrestrial orchids. The abundance of individual orchid species was relatively higher in places with higher altitudes. Micropera sp was the most abundant orchid species and Corymborkis veratrifolia was the species of orchid with the lowest abundance. It is found that the environmental conditions of Gebugan Nature Reserve are suitable for orchid. The novelty of the research is providing a new data base of orchid in the Gebugan Nature Reserve. The result of the study would be beneficial for developing strategy of genetic conservation of orchird germplasm.

Стилі APA, Harvard, Vancouver, ISO та ін.

Brundrett, Mark C. "Scientific approaches to Australian temperate terrestrial orchid conservation." Australian Journal of Botany 55, no. 3 (2007): 293. http://dx.doi.org/10.1071/bt06131.

Повний текст джерела

Анотація:

This review summarises scientific knowledge concerning the mycorrhizal associations, pollination, demographics, genetics and evolution of Australian terrestrial orchids relevant to conservation. The orchid family is highly diverse in Western Australia (WA), with over 400 recognised taxa of which 76 are Declared Rare or Priority Flora. Major threats to rare orchids in WA include habitat loss, salinity, feral animals and drought. These threats require science-based recovery actions resulting from collaborations between universities, government agencies and community groups. Fungal identification by DNA-based methods in combination with compatibility testing by germination assays has revealed a complex picture of orchid–fungus diversity and specificity. The majority of rare and common WA orchids studied have highly specific mycorrhizal associations with fungi in the Rhizoctonia alliance, but some associate with a wider diversity of fungi. These fungi may be a key factor influencing the distribution of orchids and their presence can be tested by orchid seed bait bioassays. These bioassays show that mycorrhizal fungi are concentrated in coarse organic matter that may be depleted in some habitats (e.g. by frequent fire). Mycorrhizal fungi also allow efficient propagation of terrestrial orchids for reintroduction into natural habitats and for bioassays to test habitat quality. Four categories of WA orchids are defined by the following pollination strategies: (i) nectar-producing flowers with diverse pollinators, (ii) non-rewarding flowers that mimic other plants, (iii) winter-flowering orchids that attract fungus-feeding insects and (iv) sexually deceptive orchids with relatively specific pollinators. An exceptionally high proportion of WA orchids have specific insect pollinators. Bioassays testing orchid-pollinator specificity can define habitats and separate closely related species. Other research has revealed the chemical basis for insect attraction to orchids and the ecological consequences of deceptive pollination. Genetic studies have revealed that the structure of orchid populations is influenced by pollination, seed dispersal, reproductive isolation and hybridisation. Long-term demographic studies determine the viability of orchid populations, estimate rates of transition between seedling, flowering, non-flowering and dormant states and reveal factors, such as grazing and competition, that result in declining populations. It is difficult to define potential new habitats for rare orchids because of their specific relationships with fungi and insects. An understanding of all three dimensions of orchid habitat requirements can be provided by bioassays with seed baits for fungi, flowers for insects and transplanted seedlings for orchid demography. The majority of both rare and common WA orchids have highly specific associations with pollinating insects and mycorrhizal fungi, suggesting that evolution has favoured increasing specificity in these relationships in the ancient landscapes of WA.

Стилі APA, Harvard, Vancouver, ISO та ін.

Phillips, Ryan D., Noushka Reiter, and Rod Peakall. "Orchid conservation: from theory to practice." Annals of Botany 126, no. 3 (May 14, 2020): 345–62. http://dx.doi.org/10.1093/aob/mcaa093.

Повний текст джерела

Анотація:

Abstract Background Given the exceptional diversity of orchids (26 000+ species), improving strategies for the conservation of orchids will benefit a vast number of taxa. Furthermore, with rapidly increasing numbers of endangered orchids and low success rates in orchid conservation translocation programmes worldwide, it is evident that our progress in understanding the biology of orchids is not yet translating into widespread effective conservation. Scope We highlight unusual aspects of the reproductive biology of orchids that can have important consequences for conservation programmes, such as specialization of pollination systems, low fruit set but high seed production, and the potential for long-distance seed dispersal. Further, we discuss the importance of their reliance on mycorrhizal fungi for germination, including quantifying the incidence of specialized versus generalized mycorrhizal associations in orchids. In light of leading conservation theory and the biology of orchids, we provide recommendations for improving population management and translocation programmes. Conclusions Major gains in orchid conservation can be achieved by incorporating knowledge of ecological interactions, for both generalist and specialist species. For example, habitat management can be tailored to maintain pollinator populations and conservation translocation sites selected based on confirmed availability of pollinators. Similarly, use of efficacious mycorrhizal fungi in propagation will increase the value of ex situ collections and likely increase the success of conservation translocations. Given the low genetic differentiation between populations of many orchids, experimental genetic mixing is an option to increase fitness of small populations, although caution is needed where cytotypes or floral ecotypes are present. Combining demographic data and field experiments will provide knowledge to enhance management and translocation success. Finally, high per-fruit fecundity means that orchids offer powerful but overlooked opportunities to propagate plants for experiments aimed at improving conservation outcomes. Given the predictions of ongoing environmental change, experimental approaches also offer effective ways to build more resilient populations.

Стилі APA, Harvard, Vancouver, ISO та ін.

Puy, David J., and Sandra Bell. "THE MADAGASCAR ORCHID PROJECT Growing Orchids for Conservation." Curtis's Botanical Magazine 13, no. 3 (August 1996): 163–64. http://dx.doi.org/10.1111/j.1467-8748.1996.tb00562.x.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Veldman, Sarina, Seol-Jong Kim, Tinde van Andel, Maria Bello Font, Ruth Bone, Benny Bytebier, David Chuba, et al. "Trade in Zambian Edible Orchids—DNA Barcoding Reveals the Use of Unexpected Orchid Taxa for Chikanda." Genes 9, no. 12 (November 30, 2018): 595. http://dx.doi.org/10.3390/genes9120595.

Повний текст джерела

Анотація:

In Zambia, wild edible terrestrial orchids are used to produce a local delicacy called chikanda, which has become increasingly popular throughout the country. Commercialization puts orchid populations in Zambia and neighbouring countries at risk of overharvesting. Hitherto, no study has documented which orchid species are traded on local markets, as orchid tubers are difficult to identify morphologically. In this study, the core land-plant DNA barcoding markers rbcL and matK were used in combination with nrITS to determine which species were sold in Zambian markets. Eighty-two interviews were conducted to determine harvesting areas, as well as possible sustainability concerns. By using nrITS DNA barcoding, a total of 16 orchid species in six different genera could be identified. Both rbcL and matK proved suitable to identify the tubers up to the genus or family level. Disa robusta, Platycoryne crocea and Satyrium buchananii were identified most frequently and three previously undocumented species were encountered on the market. Few orchid species are currently listed on the global International Union for the Conservation of Nature (IUCN) Red List. Local orchid populations and endemic species could be at risk of overharvesting due to the intensive and indiscriminate harvesting of chikanda orchids, and we therefore encourage increased conservation assessment of terrestrial African orchids.

Стилі APA, Harvard, Vancouver, ISO та ін.

Fay, Michael F. "Orchid conservation: further links." Annals of Botany 118, no. 1 (July 2016): 89–91. http://dx.doi.org/10.1093/aob/mcw147.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Heriansyah, Pebra, and Gusti Marlina. "Characterization and Potential of Coelogyne rochussenii Orchids from Bukit Rimbang and Bukit Baling Wildlife Sanctuary as Explant Source." Jurnal Sylva Lestari 9, no. 1 (January 29, 2021): 64. http://dx.doi.org/10.23960/jsl1964-75.

Повний текст джерела

Анотація:

Conservation is an effort to return natural resources to their habitat to restore the ecosystem balance, which can be done in-situ and ex-situ. Coelogyne rochussenii orchid conservation efforts are essential to maintain its sustainability. The purpose of this study was to characterize C. rochussenii orchids from Bukit Rimbang and Bukit Baling Wildlife Sanctuary as a source of tissue culture explants to support ex-situ conservation efforts. Orchid plant samples were obtained through exploration in three locations with an altitude of 92 masl, and then the characterization of leaf morphology, pseudobulbs, roots, and fruit were carried out. The characterization results showed that the young pseudobulbs, young leaves, healthy roots, and physiologically ripe fruits of the C. rochussenii orchids obtained could be used as a source of explants to support ex-situ conservation efforts.Keywords: ex-situ conservation, physiologically mature, young pseudobulbs

Стилі APA, Harvard, Vancouver, ISO та ін.

PUSPITANINGTYAS, DWI MURTI. "Orchid exploration in Mount Bintan Besar Protected Forest, Bintan Island, Riau Islands Province, Sumatra, Indonesia." Biodiversitas Journal of Biological Diversity 19, no. 3 (May 1, 2018): 1081–88. http://dx.doi.org/10.13057/biodiv/d190341.

Повний текст джерела

Анотація:

Puspitaningtyas DM. 2018. Orchid exploration in Mount Bintan Besar Protected Forest, Bintan Island, Riau IslandsProvince, Sumatra, Indonesia. Biodiversitas 19: 1081-1088. Sumatra is one of the main islands in Indonesia. The biodiversity is higherthan Java, but still below compare to Borneo and New Guinea. About 1,118 species of orchids are found growing in Sumatra, which41% of these are endemic to Sumatra. The exploration activities were conducted at Gunung Bintan Besar Protected Forest, Bintanisland-Sumatra. Orchid exploration was conducted in this area to collect living plants for ex situ conservation purpose. Orchid inventoryto record orchid diversity in this area, based on plant collection by purposive random sampling. The results of the study recordedapproximately 23 orchid collection numbers found in that area. These were representative of 15 genera and consist of 14 species ofepiphyte orchids and 9 species of terrestrial orchids. Most orchids found in this area are lowland orchid which are very common inSumatra. Dendrobium metachilinum Rchb.f., Dendrobium leonis (Lindl.) Rchb.f. and Plocoglottis lowii Rchb.f. are unique orchidsspecies found on this island.

Стилі APA, Harvard, Vancouver, ISO та ін.

Gaman, Gasper, Nouke Lenda Mawikere, and Barahima Abbas. "Perbanyakan Beberapa Jenis Anggrek Melalui Teknik Kultur Jaringan dan Analisis Keanekaragaman Genetik Berdasarkan Penanda RAPD." Cassowary 1, no. 2 (July 5, 2018): 121–32. http://dx.doi.org/10.30862/casssowary.cs.v1.i2.16.

Повний текст джерела

Анотація:

Papua is the habitat of a variety of orchids and several of orchid species are endemic in Papua. Diversity of orchid species in Papua is a natural resource which needs special attention in conservation efforts and cultivation. The aimes of this research were determined the suitable medium for in vitro propagation technique of several orchid species which endemic in Papua and determine the genetic diversity of five orchids species using RAPD markers. The research was carried out by cultivation of five edemism orchid species on MS medium which enriched 0 to 40% coconut water. Genetic diversities of five orchid species were determined by using RAPD markers. Results of research showed that overall of orchid were cultured can grow to planlet formation. The suitable medium for growing orchids based on this experiment was Murashige and Skoog (MS) medium that enriched with 40% coconut water. Molecular analysis using RAPD markers showed that the five species of Papua orchid were tested different from another. UPGMA grouping based on the polymorphic bands show that the five species of orchid studied were devided into three groups on the coefficient of 0.4 or 40% their genomic different.

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Дисертації з теми "Orchid conservation"

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.

Повний текст джерела

Анотація:

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.

Стилі APA, Harvard, Vancouver, ISO та ін.

Stewart, Scott L. "Integrated conservation of Florida Orchidaceae in the genera Habenaria and Spiranthes : model orchid conservation systems for the Americas /." View online, 2007. http://etd.fcla.edu/UF/UFE0021367/stewart_s.pdf.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Mursidawati, Sofi. "Mycorrhizal association, propagation and conservation of the myco-heterotrophic orchid Rhizanthella gardneri." University of Western Australia. School of Earth and Geographical Sciences, 2004. http://theses.library.uwa.edu.au/adt-WU2004.0014.

Повний текст джерела

Анотація:

Many orchids require mycorrhizal symbioses with fungi for their development and survival. Rhizanthella gardneri the Western Australian underground orchid is associated with the companion plant Melaleuca uncinata and its ectomycorrhizal fungus symbiont. Much less is known about the habitat requirements of its sister species, R. slateri, which occurs in Eastern Australia. The absence of chlorophyll from Rhizanthella gardneri and R. slateri results in total dependency on associations with fungal symbionts. Many ecological and biological aspects of these fascinating orchids remained poorly known, including the identity of the fungal associates and the nature of their tripartite associations with Rhizanthella and Melaleuca. Extremely high specificity of these mycorrhizal relationships is likely to be the most important factor explaining the highly specific habitat requirements of underground orchids. The purpose of this study was to conduct further investigations of the role of the mycorrhizal associations of Australian underground orchids by identifying the fungi involved in these associations, optimising their growth in sterile culture and devising efficient means for synthesising their tripartite associations with R. gardneri and M. uncinata. In total, 16 isolates of fungi were successfully obtained from the two underground orchids and used in a series of experiments to understand both the nature of the fungi and their relationship with orchids. The identity of these fungi was established by using conventional morphological and molecular methods. Cultural and morphological studies revealed that all isolates from R. gardneri and R. slateri were binucleate rhizoctonias with affinities to members of the genus Ceratobasidium. However, the teleomorph state that was observed from the R. slateri symbiont during this study more closely resembled a Thanatephorus species. Further identification using ITS sequence comparisons confirmed that mycorrhizal fungi of Rhizanthella belonged to the Rhizoctonia alliance with relatives that include Thanatephorus, Ceratobasidium, or Rhizoctonia from other continents with over 90% similarity. Most of these related fungi are known as plant pathogens, but some were orchid mycorrhizal fungi. However, the isolates from the two underground orchids were most closely related to each other and formed a discrete group relative to other known members of the Rhizoctonia alliance. Sterile culture experiments determined culture media preferences for mycorrhizal fungi from Rhizanthella and other orchids. A fully defined sterile culture medium designed to more closely resemble Australian soil conditions was formulated. This new medium was compared to undefined media containing oats or yeast extract and recommendations for growth of these fungi are provided. The undefined media based on oats provided the best growth of most fungi, but the new Australian soil media was also effective at growing most orchid mycorrhizal fungi and this fully defined media was less prone to contamination and should provide more reproducible results. A comparison of three methods for inoculating M. uncinata with the underground orchid fungi resulted in the production and characterisation of ectomycorrhizal roots and hyphae formed by fungi isolated from R. gardneri and R. slateri. These underground orchid fungi could easily be distinguished from other mycorrhizal fungi (caused by airborne contamination) by the characteristic appearance of these roots and hyphae. A new system for growing and observing tripartite mycorrhizal associations was devised using pots with side viewing windows and the use of transparent seed packets to contain Rhizanthella seeds. This method allowed all the stages of seed germination to be observed in the glasshouse, culminating in the production of underground orchid rhizomes. Seed germination was only successful when seed was placed directly over active M. uncinata ectomycorrhizas confirmed to belong to the correct fungus by microscopic observations through the side of window pots. The importance of these new scientific discoveries concerning the biology and ecology of the underground orchids and their associated fungi for the recovery of these critically endangered orchids are discussed.

Стилі APA, Harvard, Vancouver, ISO та ін.

Gale, Stephan William. "Population ecology and conservation of Nervilia nipponica, an endangered orchid in Japan." Thesis, University of Sussex, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494944.

Повний текст джерела

Анотація:

Nervilia nipiponica is a small terrestrial orchid known from a limited number of woodland sites in southwest and central Japan. Its scattered distribution, small total population size and sensitivity to stochastic events have led to its classification as Endangered at the national level, and it has recently been selected as a priority species for conservation. However, the reasons for the species' rarity are obscure, and the means by which its endangered status might be ameliorated remain speculative. In this study, multi-disciplinary research was undertaken to illuminate details of the species' ecology towards the development of practical management guidelines.

Стилі APA, Harvard, Vancouver, ISO та ін.

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Gustafsson, Susanne. "Population genetic analyses in the orchid genus Gymnadenia : a conservation genetic perspective." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3305.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

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.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Bougoure, Jeremy J. "The role of mycorrhizal fungi in nutrient supply and habitat specificity of the rare mycoheterotrophic underground orchid, Rhizanthella gardneri." University of Western Australia. School of Plant Biology, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0076.

Повний текст джерела

Анотація:

Rhizanthella gardneri (Rogers) is a critically endangered orchid restricted to two isolated regions of south-western Australia. Rhizanthella gardneri is an entirely subterranean mycoheterotrophic species that purportedly forms a tripartite relationship with a mycorrhizal fungus (Ceratobasidiales) that links with an autotrophic shrub of the Melaleuca uncinata complex to acquire nutrients. Whether the rarity of R. gardneri is intrinsic is overshadowed by the recent effect of extrinsic factors that means R. gardneri requires some form of conservation and may also be a viable candidate for restoration. To create an integrated conservation strategy for R. gardneri, reasons for its decline and knowledge of its biological and ecological functioning must be elucidated. This thesis focuses on three key questions; 1) what are the habitat requirements and limitations to R. gardneri survival; 2) what is the identity and specificity of the fungus R. gardneri forms mycorrhizas with; and 3) does R. gardneri form a nutrient-sharing tripartite relationship with a mycorrhizal fungus and autotrophic shrub. Key climate, soil and vegetation characteristics of known R. gardneri habitats were quantified to provide baseline data for monitoring known R. gardneri populations, to better understand how R. gardneri interacts with its habitat, and to identify possible new sites for R. gardneri introduction. Habitats of the two known R. gardneri populations differed considerably in soil chemistry, Melaleuca structure and Melaleuca productivity. Individual sites within populations were relatively similar in all attributes measured while overall Northern and Southern habitats were distinct from each other. These results suggest that R. gardneri can tolerate a range of conditions and may be more widespread than previously thought, given that there are extensive areas of Melaleuca thickets with similar habitat characteristics across south-western Australia. The fungus forming mycorrhizas with R. gardneri was identified, using nuclear ribosomal DNA sequences, as a Rhizoctonia-type fungus within the Ceratobasidiales. All fungi isolated from R. gardneri individuals representative of its currently known distribution were genetically similar, suggesting R. gardneri is highly dependent on this specific fungal species. Given that R. gardneri appears to exclusively associate with a specific fungal species, species-specific molecular primers were designed and used to analyse the fungis presence in known and potential R. gardneri habitats. These results 6 suggest that the fungus exists beyond the known R. gardneri habitats and gives hope to finding new populations.

Стилі APA, Harvard, Vancouver, ISO та ін.

Lin, Wuying. "Comparative Reproductive Biology of a Rare Endemic Orchid and its Sympatric Congeners in Southwestern China." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/570.

Повний текст джерела

Анотація:

Comparative studies on endangered species and their more common congeners can shed light on the mechanism of species rarity, and enable conservationists to formulate effective management strategies. I compared the breeding and pollination systems of the endangered Geodorum eulophioides and its two more common sympatric congeners in subtropical China. Geodorum eulophioides and G. recurvum were self-compatible, both depending on Ceratina cognata for fruit production, while G. densiflorum can autonomously self. Although the floral visitation frequency of G. eulophioides was the highest among the three, its natural fruit set was similar to that of G. recurvum, but both lower than that of G. densiflorum. These results partially explain the difference in species abundance. Coupled with severe habitat loss and degradation, the extremely low pollinator visitation and natural fruit set of G. eulophioides calls for rapid establishment of ex-situ collection, in conjunction with improving in-situ habitat. Natural hybridization tendencies were also studied among species.

Стилі APA, Harvard, Vancouver, ISO та ін.

Sanborn, Mark A. "A Model for Field Deployment of Wireless Sensor Networks (WSNs) within the Domain of Microclimate Habitat Monitoring." NSUWorks, 2011. http://nsuworks.nova.edu/gscis_etd/296.

Повний текст джерела

Анотація:

Wireless sensor networks (WSNs) represent a class of miniaturized information systems designed to monitor physical environments. These smart monitoring systems form collaborative networks utilizing autonomous sensing, data-collection, and processing to provide real-time analytics of observed environments. As a fundamental research area in pervasive computing and envisioned as large-scale autonomous networks of communicating nodes capable of monitoring conditional metrics over vast geographic areas, WSNs have the potential to provide researchers and conservationists with increased knowledge of the intricacies and interrelationships of disparate environments. The author addressed the problem of developing a methodology for the design and deployment of WSNs in uncontrolled and harsh outdoor environments. Within the context of a research and conservation field study of flora, the author developed a model for deployment of WSNs within the domain of microclimate habitat monitoring. The goal of this study was to contribute to the body of knowledge in WSN research by developing a model for deployment that was scientifically sound and replicable. To accomplish this goal, the author conducted an investigation of current technologies associated with WSNs, their capabilities, and their applications specific to the stated domain. To validate this model, the author deployed a WSN for monitoring the microclimate habitats of a population of Spiranthes lacera var. gracilis, common name, slender ladies' tresses. During this field study, the WSN performed according to design and produced sufficient data to provide an accurate representation of the microclimate habitats of the objects of study. As a contribution to the WSN research body of knowledge, the author used an SDLC methodology to provide a pragmatic approach to deployment focused on the elements of nuance specific to WSNs for microclimate habitat monitoring.

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Книги з теми "Orchid conservation"

1927-, Kramer Jack, and Conservation International, eds. The Conservation International book of orchids. New York: Abbeville Press, 1989.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

International Festival of Orchids (Workshop and Show) (1998 Itanagar, India). Orchids: Conservation, culture, farming, and trade. Edited by Hegde S. N. 1947-. Delhi: Himalayan Publishers, 1998.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Mezhdunarodnai︠a︡, nauchnai︠a︡ konferent︠s︡ii︠a︡ "Okhrana i. kulʹtivirovanie orkhideĭ" (9nd 2011 Sankt-Peterburg Russia). Okhrana i kulʹtivirovanie orkhideĭ: Materialy IX Mezhdunarodnoĭ nauchnoĭ konferent︠s︡ii, Sankt-Peterburg, 26-30 senti︠a︡bri︠a︡ 2011 g. Moskva: T-vo nauch. izdaniĭ KMK, 2011.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Pritchard, H. W., ed. Modern Methods in Orchid Conservation: The Role of Physiology, Ecology and Management. Cambridge: Cambridge University Press, 1989. http://dx.doi.org/10.1017/cbo9780511551307.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Conservation, International Conference on Orchid. Orchid conservation: Proceedings : an International Conference on Orchid Conservation, June 5-8, 1997, at the Marie Selby Botanical Gardens, Sarasota, Florida, USA : with a comprehensive 2001 reading list. Sarasota, FL: Selby Botanical Gardens Press, 2001.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Western Prairie Fringed Orchid Recovery Team. Platanthera praeclara (western prairie fringed orchid) recovery plan. [Ft. Snelling, Minn.]: Dept. of the Interior, U.S. Fish & Wildlife Service, 1996.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Western Prairie Fringed Orchid Recovery Team. Platanthera praeclara (western prairie fringed orchid) recovery plan. [Ft. Snelling, Minn.]: Dept. of the Interior, U.S. Fish & Wildlife Service, 1996.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Orchids and their conservation. Portland, Or: Timber Press, 2001.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Kramer, Jack. The Conservation International book of orchids. New York: Abbeville Press, 1989.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Ch, Roberto Vásquez. Orquídeas de Bolivia: Diversidad y estado de conservación = Orchids of Bolivia : diversity and conservation status. Santa Cruz de la Sierra, Bolivia: Editorial F.A.N., 2000.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Частини книг з теми "Orchid conservation"

Teoh, Eng Soon. "The Challenge: Orchid Conservation." In Orchids as Aphrodisiac, Medicine or Food, 363–76. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18255-7_18.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Liu, Hong, and Jiangyun Gao. "Orchid Conservation Translocation Efforts in China." In Conservation and Reintroduction of Rare and Endangered Plants in China, 205–24. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5301-1_19.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Rahamtulla, Mohammed, Ashis Kumar Roy, and S. M. Khasim. "Orchid Diversity in Darjeeling Himalaya, India: Present Status and Conservation." In Orchid Biology: Recent Trends & Challenges, 155–88. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-32-9456-1_9.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Dolce, Natalia Raquel, Ricardo Daniel Medina, Graciela Terada, María Teresa González-Arnao, and Eduardo Alberto Flachsland. "In Vitro Propagation and Germplasm Conservation of Wild Orchids from South America." In Orchid Biology: Recent Trends & Challenges, 37–94. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-32-9456-1_4.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Hegde, Sadanand N. "Status of Orchid Diversity, Conservation, and Research and Development in Arunachal Pradesh: An Overview." In Orchid Biology: Recent Trends & Challenges, 223–35. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-32-9456-1_12.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Dearnaley, J. D. W., F. Martos, and M. A. Selosse. "12 Orchid Mycorrhizas: Molecular Ecology, Physiology, Evolution and Conservation Aspects." In Fungal Associations, 207–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-30826-0_12.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Gantait, Saikat, and Monisha Mitra. "Applications of Synthetic Seed Technology for Propagation, Storage, and Conservation of Orchid Germplasms." In Synthetic Seeds, 301–21. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-24631-0_13.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Bhattacharyya, Paromik, Shubhpriya Gupta, and Johannes Van Staden. "Phytochemistry, Pharmacology, and Conservation of Ansellia africana: A Vulnerable Medicinal Orchid of Africa." In Reference Series in Phytochemistry, 1–18. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-11257-8_17-1.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Gao, Jiangyun, Xuli Fan, and Wenke Yang. "Reintroduction and Assisted Colonization of Paphiopedilum spicerianum: An Orchid with Extremely Small Populations in China." In Conservation and Reintroduction of Rare and Endangered Plants in China, 199–204. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5301-1_18.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Seaton, Philip T., Silvério T. Hosomi, Ceci C. Custódio, Timothy R. Marks, Nelson B. Machado-Neto, and Hugh W. Pritchard. "Orchid Seed and Pollen: A Toolkit for Long-Term Storage, Viability Assessment and Conservation." In Springer Protocols Handbooks, 71–98. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7771-0_4.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Orchid conservation"

Semiarti, Endang. "Orchid biotechnology for Indonesian orchids conservation and industry." In INVENTING PROSPEROUS FUTURE THROUGH BIOLOGICAL RESEARCH AND TROPICAL BIODIVERSITY MANAGEMENT: Proceedings of the 5th International Conference on Biological Science. Author(s), 2018. http://dx.doi.org/10.1063/1.5050118.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Endah Rita, Sulistya Dewi, Susatyo Nugroho Ary, and Maria Ulfah. "Study on the Conservation of Forest Orchid and Community Perception Towards the Preservation of Ungaran Mountain Orchid in Ex Situ." In Proceedings of the 1st International Conference on Education and Social Science Research (ICESRE 2018). Paris, France: Atlantis Press, 2019. http://dx.doi.org/10.2991/icesre-18.2019.25.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Slepchenko, N. A. "Rare and endangered species orchids in the collection of FRC SSC RAS." In Botanical Gardens as Centers for Study and Conservation of Phyto-Diversity. TSU Press, 2020. http://dx.doi.org/10.17223/978-5-94621-956-3-2020-54.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Hiola, St, and Gufran Dirawan. "Analysis of community needs around the Mallawa Resort in Bantimurung Bulusaraung National Park for Conservation of Natural Orchids." In Proceedings of the 7th Mathematics, Science, and Computer Science Education International Seminar, MSCEIS 2019, 12 October 2019, Bandung, West Java, Indonesia. EAI, 2020. http://dx.doi.org/10.4108/eai.12-10-2019.2296354.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Houlihan, Peter R. "Cross-pollination in the 21st century: Integrating entomologists and botanists to explore the island biogeography and conservation of Caribbean orchids." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.115646.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!