Bradleya最新文献

{"title":"Brazil's Micranthocereus polyanthus ninety years on","authors":"D. Zappi, Sinzinando Albuquerque‐Lima, N. Taylor","doi":"10.25223/brad.sp40.2022.a21","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a21","url":null,"abstract":"Summary. The dramatic threats to the population at the locus classicus of Micranthocereus polyanthus (EN) is reported and all surviving mature individuals counted. The urgent need for the secure preservation of its habitat at Brejinho das Ametistas, Bahia, Brazil is emphasised.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47382967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Succulent conservation nearer home","authors":"R. Stephenson","doi":"10.25223/brad.sp40.2022.a19","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a19","url":null,"abstract":"Summary: Many growers, keen to conserve exotic species abroad, are often unaware of the decimation of native species.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42820109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE AUTHORS","authors":"Thieres Santos Almeida","doi":"10.25223/brad.sp40.2022.a22","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a22","url":null,"abstract":"Luciano Delmondes de Alencar graduated in agroecology from the Federal University of São Carlos with a Masters in agronomy from the Agronomic Institute of Campinas (IAC). He is currently a doctoral student at UNICAMP (genetics and molecular biology) and works on the taxonomic classification of the genus Coleocephalocereus through the plastidial genome and genetic populations, aiming to propose public policies and management strategies for the preservation and maintenance of the genus, thus ensuring sustainability throughout generations.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69418310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review and update of the conservation status of Kalanchoe species (Crassulaceae subfam. Kalanchooideae) in the Flora of Southern Africa region","authors":"Gideon F. Smith, E. Figueiredo, K. Oberlander","doi":"10.25223/brad.sp40.2022.a18","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a18","url":null,"abstract":"Summary: An overview and update is provided of the conservation status of the twenty species of Kalanchoe (Crassulaceae subfam. Kalanchooideae) indigenous in southern Africa. Fourteen of the species grow abundantly in extensive natural geographical distribution ranges and from a conservation perspective are of Least Concern. One species, K. laciniata, has a very wide global distribution range but is restricted to Namibia in the southern African region. The other five Kalanchoe species that are of conservation concern are all southern African endemics, being additionally endemic to specific Regions or Centres of Endemism. These are: K. alticola (Barberton Centre of Endemism), K. crouchii (Wolkberg Centre of Endemism), K. crundallii (Soutpansberg Centre of Endmism), K. longiflora (Maputaland-Pondoland Region of Endemism) and K. winteri (Wolkberg Centre of Endemism).","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47892815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ceropegia europaea (Guss.) Bruyns, (Apocynaceae; Asclepiadoideae; Ceropegieae) in Tunisia: occurrence and conservation","authors":"R. Mokni","doi":"10.25223/brad.sp40.2022.a7","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a7","url":null,"abstract":"Summary: Despite its importance for scientific and conservation purposes, knowledge about the real distribution and status of native Tunisian flora is far from exhaustive. Chorological data for Ceropegia europaea (Guss.) Bruyns, the only taxon of stapeliads in the country is here presented. Morphological characters together with data on its phenology, habitat and ecology are also given. Threats at national level are evaluated and measures for conservation are here proposed.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49097341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Editorial","authors":"G. Thomson","doi":"10.25223/brad.n40.2022.a20","DOIUrl":"https://doi.org/10.25223/brad.n40.2022.a20","url":null,"abstract":"George Miley, Editor in Chief of Laser and Particle Beams, celebrated his 60th birthday on August 6, 1993. While born in Shreveport, Louisiana, he was raised in western Pennsylvania, in the heavily industrialized area around Pittsburgh. Influenced by his father's position as a chemist in an oil refinery, George Miley decided to pursue a career in chemical engineering. When he was admitted into Carnegie-Mellon University his junior year in high school, he immediately entered the Chemical Engineering Department. When he entered graduate school at the University of Michigan, his interests turned to nuclear sciences, and his PhD research dealt with the effect of radiation on chemical reactions. He graduated with a dual chemical/nuclear engineering degree. It is a pleasure to see how George's career led him to the study of lasers and particle beams. Several plasma courses stimulated his interest in fusion, and his first job was in the advanced theory section of the Knolls Atomic Power Laboratory (KAPL), where he felt he would learn more about \"practical\" nuclear systems. (KAPL was renowned for its work on naval submarine fission reactors.) Although at KAPL for only 2 years, Dr. Miley gained a wide reputation for his work on burnable poisons to extend reactor core lifetimes and his development of calculational methods for lifetime estimates. Admiral Rickover took a special interest in the work of this young scientist because of its obvious importance to naval reactors. He even took the unusual step of requesting that Dr. Miley spend 1 week locked in one of the submarine simulators so that he would \"fully appreciate the importance that the crew placed on the accuracy of lifetime calculations.\" When he joined the faculty at the University of Illinois in 1961, his main interest was in fission reactor dynamics. He immediately set up a combined theoretical/experimental program on reactor kinetics and neutron wave propagation, publishing several pioneering articles on these topics, and reporting the first measurement and theory for neutron wave propagation in a moderating medium in response to a reactor pulse. In 1963, he developed the concept for a nuclear-pumped laser after reading one of the first books on electrically pumped lasers. Later, he discovered that his concept had been anticipated by 6 months by another scientist, Lloyd Herwig of United Aircraft Corporation. But, by then his study of nuclear pumping had begun in earnest.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45977504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bulbine sceletium, a new cliff-dwelling Bulbine species (Asphodelaceae) from the Eastern Cape","authors":"E. V. VAN JAARSVELD, A. Harrower","doi":"10.25223/brad.n40.2022.a12","DOIUrl":"https://doi.org/10.25223/brad.n40.2022.a12","url":null,"abstract":"Summary: Bulbine sceletium (Asphodelaceae), only known from cliffs along the lower Great Fish and Mzimvubu Rivers, Eastern Cape Province, South Africa, is described. Its decumbent large greyish-green leaf rosettes are up to 300mm in diameter with persistent ovate to broadly ovate-acuminate leaves 300 × 140mm, drying from the tips into a thin papery striate persistent skeleton. The description of this taxon forms part of an extensive survey of cliff-dwelling succulent and bulbous-succulent taxa in South Africa and Namibia. A table is provided with a selection of characters of similar species of Bulbine in the Eastern Cape. A key is also provided to the cliff-dwelling Bulbine species of the summer rainfall parts of South Africa.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48980042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"×Rhipsatiora astra (Cactaceae). A new intergeneric hybrid between Rhipsalis cereuscula and Hatiora salicornioides which can exist in nature","authors":"Tadaaki Urano","doi":"10.25223/brad.n40.2022.a7","DOIUrl":"https://doi.org/10.25223/brad.n40.2022.a7","url":null,"abstract":"Summary: The name ×Rhipsatiora astra Urano is published here for the artificial crossed intergeneric hybrid between genera Rhipsalis Gaertn and Hatiora Britton & Rose. This is the first report of an intergeneric hybrid for both R. cereuscula Haw. and H. salicornioides (Haw.) Britton & Rose in L.H.Bailey. The intergeneric hybrid has similarities to both parent species in terms of morphological characteristics. It could occur in a natural habitat.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47581477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conservation status of the genus Aloe L. (Asphodelaceae) in Zimbabwe","authors":"A. Maroyi","doi":"10.25223/brad.sp40.2022.a16","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a16","url":null,"abstract":"Summary: An overview of the conservation status of the genus Aloe L. (Asphodelaceae) in Zimbabwe is presented. Currently, fifteen Aloe taxa are threatened and near-threatened with extinction in Zimbabwe. There is great horticultural interest in the genus and there is evidence that Aloe taxa have been collected from the wild and used for this purpose. Other major threats to their conservation include agriculture, urbanisation, bush fires, habitat fragmentation and loss. Information about the habitat, conservation status and distribution maps of threatened and near-threatened Aloe taxa is presented.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47630415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Are endangered cacti safe in Brazil?","authors":"M. Meiado, Thieres Santos Almeida","doi":"10.25223/brad.sp40.2022.a12","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a12","url":null,"abstract":"Summary: In situ conservation is an effective way to conserve living organisms, particularly endangered species. One way to encourage and guarantee in situ conservation is the creation of Conservation Units. Thus, this study points out which endangered cacti are protected in these Conservation Units and which are living in unprotected areas. Furthermore, we also discuss the effectiveness of these different types of Conservation Units in protecting these endangered cacti. Initially, we made up a list of all Cactaceae species in Brazil to assign their respective extinction risk category. This list was prepared according to the ‘Flora do Brasil’ database, the IUCN Red List of Threatened Species, and the book Cacti of Eastern Brazil. We only included cacti assigned to the Near Threatened, Vulnerable, Endangered and Critically Endangered categories. We also obtained information about the phytogeographic domain and Conservation Unit where cacti grow. There are 272 species and thirty-seven genera of the Cactaceae family in Brazil. Cacti grow in all six Brazilian phytogeographic domains. We found 135 species grouped into twenty-three genera threatened with extinction in Brazil. Parodia Speg. (nineteen species), Pilosocereus Byles & Rowley (sixteen species) and Rhipsalis Gaertn. (sixteen species) are the genera with the largest number of endangered species. There is no record of endangered cacti in the Amazon Rainforest. The largest number of endangered taxa are in the Cerrado (fifty-two taxa), Caatinga (fifty-one taxa), and Atlantic Forest (forty-eight taxa). We found that about 50% of these taxa grow in unprotected areas outside Conservation Units, which means that most endangered cacti are not safe in Brazil. If we do not take urgent protection actions for their conservation, many endangered cacti will be extinct from the wild in a few years in Brazil.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41312447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}