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Chemical Element Concentrations of Cycad Leaves: Do We Know Enough?
horticulturae Review Chemical Element Concentrations of Cycad Leaves: Do We Know Enough? Benjamin E. Deloso 1 , Murukesan V. Krishnapillai 2 , Ulysses F. Ferreras 3, Anders J. Lindström 4, Michael Calonje 5 and Thomas E. Marler 6,* 1 College of Natural and Applied Sciences, University of Guam, Mangilao, GU 96923, USA; [email protected] 2 Cooperative Research and Extension, Yap Campus, College of Micronesia-FSM, Colonia, Yap 96943, Micronesia; [email protected] 3 Philippine Native Plants Conservation Society Inc., Ninoy Aquino Parks and Wildlife Center, Quezon City 1101, Philippines; [email protected] 4 Plant Collections Department, Nong Nooch Tropical Botanical Garden, 34/1 Sukhumvit Highway, Najomtien, Sattahip, Chonburi 20250, Thailand; [email protected] 5 Montgomery Botanical Center, 11901 Old Cutler Road, Coral Gables, FL 33156, USA; [email protected] 6 Western Pacific Tropical Research Center, University of Guam, Mangilao, GU 96923, USA * Correspondence: [email protected] Received: 13 October 2020; Accepted: 16 November 2020; Published: 19 November 2020 Abstract: The literature containing which chemical elements are found in cycad leaves was reviewed to determine the range in values of concentrations reported for essential and beneficial elements. We found 46 of the 358 described cycad species had at least one element reported to date. The only genus that was missing from the data was Microcycas. Many of the species reports contained concentrations of one to several macronutrients and no other elements. The cycad leaves contained greater nitrogen and phosphorus concentrations than the reported means for plants throughout the world. Magnesium was identified as the macronutrient that has been least studied. -
Cycad Forensics: Tracing the Origin of Poached Cycads Using Stable Isotopes, Trace Element Concentrations and Radiocarbon Dating Techniques
Cycad forensics: Tracing the origin of poached cycads using stable isotopes, trace element concentrations and radiocarbon dating techniques by Kirsten Retief Supervisors: Dr Adam West (UCT) and Ms Michele Pfab (SANBI) Submitted in partial fulfillment of the requirements for the degree of Masters of Science in Conservation Biology 5 June 2013 Percy FitzPatrick Institution of African Ornithology, UniversityDepartment of Biologicalof Cape Sciences Town University of Cape Town, Rondebosch Cape Town South Africa 7701 i The copyright of this thesis vests in the author. No quotation from it or information derived from it is to be published without full acknowledgement of the source. The thesis is to be used for private study or non- commercial research purposes only. Published by the University of Cape Town (UCT) in terms of the non-exclusive license granted to UCT by the author. University of Cape Town Table of Contents Acknowledgements iii Plagiarism declaration iv Abstract v Chapter 1: Status of cycads and background to developing a forensic technique 1 1. Why are cycads threatened? 2 2. Importance of cycads 4 3. Current conservation strategies 5 4. Stable isotopes in forensic science 7 5. Trace element concentrations 15 6. Principles for using isotopes as a tracer 15 7. Radiocarbon dating 16 8. Cycad life history, anatomy and age of tissues 18 9. Recapitulation 22 Chapter 2: Applying stable isotope and radiocarbon dating techniques to cycads 23 1. Introduction 24 2. Methods 26 2.1 Sampling selection and sites 26 2.2 Sampling techniques 30 2.3 Processing samples 35 2.4 Cellulose extraction 37 2.5 Oxygen and sulphur stable isotopes 37 2.6 CarbonUniversity and nitrogen stable of isotopes Cape Town 38 2.7 Strontium, lead and elemental concentration analysis 39 2.8 Radiocarbon dating 41 2.9 Data analysis 42 3. -
Verzeichnis Der Gattungen Und Arten
Verzeichnis der Gattungen und Arten Abies 79, 93, 296, 300ff, 310, Adansonia fony 318f Alluaudia humbertii 318f 426f, 435, 452, 455, 476f, Adansonia gregorii 368f, Alnus 92f, 301, 409, 416, 426, 505, 606 571f 432ff, 452 Abies balsamea 426 Adansonia za 318f Alnus crispa 426 Abies balsamifera 427, 435 Adenium socotranum 566 Alnus fruticosa 409, 416, 426, Abies firma 455, 505 Adenostoma fasciculatum 434 Abies fraseri 310 486 Alnus hirsuta 426, 432 Abies heterophylla 296 Adiantum 73, 498 Alnus incana 426 Abies koreana 296 Adiantum reniforme 498 Alnus japonica 434 Abies nebrodensis 476 Adonis vernalis 9 Alnus kamschatica 426 Abies nephrolepis 300, 426, Aechmea 322, 327 Alnus maximowiczii 434 433 Aechmea smithiorum 327 Alnus rugosa 426 Abies nordmannia 304f, 452 Aegilops squarrosa 239 Alnus subcordata 452 Abies pinsapo 476 Aeonium 541 Alnus tenuifolia 426 Abies sachalinensis 426, 433 Aesculus 307ff, 450f, 460 Aloa impennis 232 Abies sibirica 296, 302, 426f, Aesculus hippocastanum Aloe 177, 232, 291, 334, 558, 435 450, 460 566 Acacia 198, 328, 331ff, 368f, Aesculus parviflora 309 Aloe arborescens 177 373, 548, 552, 565ff, 587 Agathis 73, 98, 173ff, Aloe dichotoma 558 Acacia aneura 552 512f, 593 Aloe perryi 566 Acacia brachystachia 553 Agathis australis 512 Aloe plicata 291 Acacia cambagai 553 Agathis jurassica 73 Alopecurus alpinus 413 Acacia cyclops 198 Agathis microstachya 593 Alpinia purpurata 321f Acacia dealbata 328 Agathis robusta 175, 593 Alpinia zerumbet 317 Acacia kempeana 553 Agathis vitiensis 175 Amanita muscaria 428 Acacia koa 588 -
Darwin International Airport Landscape Treatments
Darwin International Airport Landscape Treatments FINAL REPORT - 29.06.09 ISSUE E DARWIN INTERNATIONAL AIRPORT LANDSCAPE TREATMENTS FINAL REPORT Northern Territory Airports Pty Ltd PO Box 40996 CASUARINA NT 0811 CLOUSTON Associates Landscape Architects • Urban Designers • Landscape Planners Level 1, 1 Briggs Street • Darwin • NT 0801 PO Box 1118 • Darwin • NT 0801 Telephone (08) 8941 2450 • Facsimile (08) 8981 8230 Email • [email protected] ND609 • Issue E • 29.06.09 TABLE OF CONTENTS Title page CONTENTS TABLE OF CONTENTS 3 EXECUTIVE SUMMARY 4 LANDSCAPE treatments summary 5 INTRODUCTION 6 LANDSCAPE TREATMENTS 7 HIGHLIGHT LANDSCAPE treatment SHOWCASE LANDSCAPE treatment STRUCTURE LANDSCAPE treatment UTILITY LANDSCAPE treatment habitat LANDSCAPE treatment APPENDIX - BANNED SPECIES list 20 DARWIN INTERNATIONAL AIRPORT - LANDSCAPE TREATMENTS • ISSUE E JUNE 2009 3 EXECUTIVE SUMMARY The Darwin International Airport masterplan identifies a range of uses and functions that include airport operations, tourist development, environmental areas and commercial opportunities. These functions are supported by existing services and infrastructure. All this occurs within a landscape framework. It is recognised that the landscape development of the site is a significant factor in establishing a distinct character that reflects the overall development philosophy and objectives as described in the Masterplan. The landscape masterplan prepared by Greening Australia in 2005 established a landscape approach ‘that incorporates and builds on the strengths of the Rapid Creek catchment’s unique plant communities that include riparian monsoon forest, eucalypt woodland, melaleuca swamps and wetlands”. The resultant landscape deliberately introduces international and national visitors to the beauty and diversity of the Top End environment and associated flora. In order to provide clear direction to future works within the precinct, it has been recognised that a ‘kit of part’ comprising distinct landscape treatments is required. -
Elemental Profiles in Cycas Micronesica Stems
plants Article Elemental Profiles in Cycas micronesica Stems Thomas E. Marler College of Natural and Applied Sciences, University of Guam, UOG Station, Mangilao, Guam 96923, USA; [email protected]; Tel.: +1-671-735-2100 Received: 24 August 2018; Accepted: 30 October 2018; Published: 1 November 2018 Abstract: Essential nutrients and metals have been quantified in stems of many tree species to understand the role of stems as storage and source organs. Little is known about stored stem resources of cycad tree species. Cycas micronesica tissue was collected from apical and basal axial regions of stems; and pith, vascular, and cortex tissues were separated into three radial regions. Leaves were also sampled to provide a comparison to stems. Minerals and metals were quantified in all tissues. Minerals and metals varied greatly among the six stem sections. Phosphorus varied more among the three radial sections than the other macronutrients, and zinc and nickel varied more than the other micronutrients. Stem carbon was less than and stem calcium was greater than expected, based on what is currently known tree stem concentrations in the literature. Elemental concentrations were generally greater than those previously reported for coniferous gymnosperm trees. Moreover, the stem concentrations were high in relation to leaf concentrations, when compared to published angiosperm and conifer data. The results indicated that the addition of more cycad species to the literature will improve our understanding of gymnosperm versus angiosperm stem nutrient relations, and that the non-woody cycad stem contains copious essential plant nutrients that can be mobilized and deployed to sinks when needed. -
Botany News #1 - April 22, 2020 California Academy of Sciences
Botany News #1 - April 22, 2020 California Academy of Sciences Osbeckia octandra (a Princess Flower). Frank Almeda Hello to our volunteers, Happy Volunteer Week! Thank you for all that you do and we look forward to having you back with us. We all miss you dearly, so we have prepared this newsletter to let you know what we have been up to recently. Please enjoy reading these stories in our first newsletter, and we will keep you updated in the future. We hope that you are all well and safe during this challenging time. Please let us know if you need anything. With our best wishes from the Botany Department Making the Rounds Deb Trock The Collection Managers have been taking turns making rounds through all of the collection spaces each weekday. I have been fortunate enough to be able to make a couple of trips to the building to do rounds and check on the mail that is still coming in. I can tell you that the building is as empty as Emily describes in her update. I’ve encountered a couple of biologists on my rounds and they report that - for the most part - the animals are enjoying their little break from people. I think the penguins are a bit lonely, but Claude seems quite happy. Pestec, our pest management contractor, has been working hard to help us monitor and reduce the number of rodent and insect pests that we are constantly dealing with in our unique building. They report that, with the absence of food and people in the building, the rodents are going into the traps much better, so we are getting a much better handle on what has been an ongoing problem. -
Fossil and Living Cycads Say No More Megasporophylls
hology orp a Miao et al., J Morphol Anat 2017, 1:2 nd M f A o n l a a t n o r m u y o J Journal of Morphology and Anatomy Research Article Article Open Access Fossil and Living Cycads Say "No More Megasporophylls" Yuyan Miao1,2, Zhong-Jian Liu3, Meina Wang3,4 and Xin Wang5* 1Beijing Museum of Natural History, Beijing, China 2State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan, China 3Shenzhen Key Laboratory for Orchid Conservation and Utilization, National Orchid Conservation Center of China and Orchid Conservation and Research Center of Shenzhen, Shenzhen, China 4College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou, China 5CAS Key Laboratory of Economic Stratigraphy and Paleogeography, Nanjing Institute of Geology and Palaeontology, Nanjing, China Abstract The origins of angiosperms and cycads are still mysterious. To understand the evolution of these groups as well as other gymnosperms it was impossible without mentioning a frequently used term “megasporophyll”. “Megasporophyll” is a concept that has been used widely in botany. This term is more or less related with the famous saying “Alles ist Blatt” by Goethe. This term became popular since Arber and Parkin hypothesized that the carpels in the Magnoliales were equivalent to and derived from former foliar parts bearing ovules along their margins (“megasporophyll”). Many botanists uncritically called the parts in all the reproductive organs of seed plants as “sporophylls”, no matter what they actually saw in the plants. However, the fact is that none of the reproductive parts (fossil or living), except those in the Cycadales, are foliar or leaf-like. -
Bryological Times
The Bryological Times Volume 146 President’s Message – In This Issue – Bernard Goffinet | University of President’s Message ........................................ 1 Connecticut | Storrs, U.S.A. | Fieldwork in the Cook Islands of the [email protected] South Pacific ....................................................... 2 News from the Hattori Botanical Every day important contributions to our Laboratory .......................................................... 4 understanding of the biology of bryophytes are Bryophytes at the IBC, Shenzhen, China ..... disseminated through peer-review publications. Although bryology could benefit from more ................................................................................. 5 researchers devoted to it, bryophytes are not Paroicous inflorescence of a liverwort, understudied per se, but are widely overlooked or Liochlaena lanceolata Nees. .......................... 9 one could say transparent to a large part of the News from the IAB council ............................ 9 public and also our fellow colleague botanists. Hence it is important that bryologists engage in The joint social event of IAB and the activities promoting an awareness of bryophytes Bryological Society of China ...................... 10 and advances unraveling their evolutionary history Review of Bryophyte Ecology, Vol. 1 ....... 12 and diversity, the genetic networks underlying their Peru bryology travel log.............................. 12 ontogeny, their unique physiological properties and their interactions -
1 a Simple and Efficient Method of Germinating Cycad Seeds Bart Schutzman Environmental Horticulture Department, University of F
1 A Simple and Efficient Method of Germinating Cycad Seeds© Bart Schutzman Environmental Horticulture Department, University of Florida, Gainesville, Florida 32611-0670, USA Email: [email protected] INTRODUCTION Cycads, an endangered group of plants from the world’s tropics and subtropics, have been a mysterious and intriguing plant group to botanists since they were first documented more than 200 years ago. The number of described species continues to grow as subtropical and tropical regions are thoroughly explored; the latest count published in the World List of Cycads (q.v.) is 343. Interest in these plants has grown tremendously over the last 20 years, especially since accurate information has become readily available on the internet. The World List of Cycads, the Cycad Pages, the Cycad Society’s Web site, and a number of other groups readily share information and photographs. Many species of cycads are endangered, and both plants and seeds can be both difficult and expensive to obtain. The seeds of several species can be difficult to germinate and keep alive. The purpose of this paper is to explain and recommend the “baggie method” of germination, a technique that already is well-known in palms. It is not a new method for cycads by any means, but too many people are still unfamiliar with its ease and benefits. The method increases germination percentage and survivability of scarce and expensive seed. The information is especially useful to both the nursery industry and hobbyists; it will ultimately reduce the pressure exerted by poaching on indigenous cycad populations by making plants of the species easier to 2 obtain. -