The Systematist 16
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
UNIVERSITY of CALIFORNIA Santa Barbara Ancient Plant Use and the Importance of Geophytes Among the Island Chumash of Santa Cruz
UNIVERSITY OF CALIFORNIA Santa Barbara Ancient Plant Use and the Importance of Geophytes among the Island Chumash of Santa Cruz Island, California A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Anthropology by Kristina Marie Gill Committee in charge: Professor Michael A. Glassow, Chair Professor Michael A. Jochim Professor Amber M. VanDerwarker Professor Lynn H. Gamble September 2015 The dissertation of Kristina Marie Gill is approved. __________________________________________ Michael A. Jochim __________________________________________ Amber M. VanDerwarker __________________________________________ Lynn H. Gamble __________________________________________ Michael A. Glassow, Committee Chair July 2015 Ancient Plant Use and the Importance of Geophytes among the Island Chumash of Santa Cruz Island, California Copyright © 2015 By Kristina Marie Gill iii DEDICATION This dissertation is dedicated to my Family, Mike Glassow, and the Chumash People. iv ACKNOWLEDGEMENTS I am indebted to many people who have provided guidance, encouragement, and support in my career as an archaeologist, and especially through my undergraduate and graduate studies. For those of whom I am unable to personally thank here, know that I deeply appreciate your support. First and foremost, I want to thank my chair Michael Glassow for his patience, enthusiasm, and encouragement during all aspects of this daunting project. I am also truly grateful to have had the opportunity to know, learn from, and work with my other committee members, Mike Jochim, Amber VanDerwarker, and Lynn Gamble. I cherish my various field experiences with them all on the Channel Islands and especially in southern Germany with Mike Jochim, whose worldly perspective I value deeply. I also thank Terry Jones, who provided me many undergraduate opportunities in California archaeology and encouraged me to attend a field school on San Clemente Island with Mark Raab and Andy Yatsko, an experience that left me captivated with the islands and their history. -
Can You Make Morphometrics Work When You Know the Right Answer? Pick and Mix Approaches for Apple Identification
RESEARCH ARTICLE Can you make morphometrics work when you know the right answer? Pick and mix approaches for apple identification 1¤ 2 1 Maria D. ChristodoulouID , Nicholas Hugh Battey , Alastair CulhamID * 1 University of Reading Herbarium, Harborne Building, School of Biological Sciences, University of Reading, Whiteknights, Reading, United Kingdom, 2 School of Biological Sciences, University of Reading, Whiteknights Reading, United Kingdom a1111111111 ¤ Current address: Department of Statistics, University of Oxford, Oxford, United Kingdom a1111111111 * [email protected] a1111111111 a1111111111 a1111111111 Abstract Morphological classification of living things has challenged science for several centuries and has led to a wide range of objective morphometric approaches in data gathering and analy- sis. In this paper we explore those methods using apple cultivars, a model biological system OPEN ACCESS in which discrete groups are pre-defined but in which there is a high level of overall morpho- Citation: Christodoulou MD, Battey NH, Culham A logical similarity. The effectiveness of morphometric techniques in discovering the groups is (2018) Can you make morphometrics work when you know the right answer? Pick and mix evaluated using statistical learning tools. No one technique proved optimal in classification approaches for apple identification. PLoS ONE on every occasion, linear morphometric techniques slightly out-performing geometric 13(10): e0205357. https://doi.org/10.1371/journal. (72.6% accuracy on test set versus 66.7%). -
Herbarium News
Herbarium News University of Reading Herbarium Newsletter Issue No. 45, December 2008. ISSN 0953-0080 URL: www.herbarium.reading.ac.uk INTRODUCTION Welcome to another Christmas Herbarium News. As with every edition we have much to report! During the last year a number of important things have happened, not least the refurbishment of two of our taxonomy laboratories (more details below). We have also changed the name of our building from ‘Plant Science Laboratories’ to ‘The Harborne Building’ to commemorate Jeffrey Harborne, FRS, our late lamented phytochemist. This is in line with University policy to name buildings after people, and the new biomolecular sciences building (behind Chemistry) for our medical and pharmacy researchers will be called the Hopkins Building, after the late Professor Harold Hopkins, sometime Professor in Physics here who developed fibre optics and the endoscope. The Herbarium has been especially busy having now completed the incorporation of the Herbarium from the University of Southampton, again see below. HERBARIUM REVIEW AND STRATEGY Our School of Biological Sciences recently undertook a review of the Herbarium, along with the Cole Museum of Zoology and a number of other issues. Ours was led by Professor Philip John with Professor Martin Bell (Archaeology), Kate Arnold-Foster (Head of the University’s Museums and Special Collections Service and Dr Karen Henderson (Head of Technical Services, Biological Sciences). They were very positive and have recommended that a Herbarium Strategy be drawn up for the next five years, currently in progress. Senate also positively noted the Herbarium’s growing level of engagement with the University and the likely increase in the commercial value of this resource. -
RHS Gardening in a Changing Climate Report
Gardening in a Changing Climate Acknowledgements The RHS and University of Reading would like to acknowledge the support provided by Innovate UK through the short Knowledge Transfer Partnership KTP 1000769 from November 2012 to September 2013. The RHS is grateful to the Trustees of Spencer Horticultural Trust, who supported the project to revise the Gardening in the Global Greenhouse report. The RHS would also like to thank: The authors of the 2002 report, Richard Bisgrove and Professor Paul Hadley, for building the foundations for this updated report. The contributors of this report: Dr John David (RHS), Dr Ross Cameron (University of Sheffield), Dr Alastair Culham (University of Reading), Kathy Maskell (Walker Institute, University of Reading) and Dr Claudia Bernardini (KTP Research Associate). Dr Mark McCarthy (Met Office) and Professor Tim Sparks (Coventry University) for their expert consultation on the climate projections and phenology chapters, respectively. This document is available to download as a free PDF at: Gardening in a www.rhs.org.uk/climate-change Citation Changing Climate Webster E, Cameron RWF and Culham A (2017) Gardening in a Changing Climate, Royal Horticultural Society, UK. Eleanor Webster, About the authors Ross Cameron and Dr Eleanor Webster is a Climate Scientist at the Royal Horticultural Alastair Culham Society Dr Ross Cameron is a Senior Lecturer in Landscape Management, Ecology & Design at the University of Sheffield Dr Alastair Culham is an Associate Professor of Botany at the University of Reading Gardening in a Changing Climate RHS 2 3 Contents Acknowledgements ............................................................................................................................................................................. 2 3.4 The UK’s variable weather and its implications for projections of future climate ....................................................... -
Arxiv:1810.00224V2 [Q-Bio.PE] 7 Dec 2020 Humanity Is Increasingly Influencing Global Environments [195]
A Survey of Biodiversity Informatics: Concepts, Practices, and Challenges Luiz M. R. Gadelha Jr.1* Pedro C. de Siracusa1 Artur Ziviani1 Eduardo Couto Dalcin2 Helen Michelle Affe2 Marinez Ferreira de Siqueira2 Luís Alexandre Estevão da Silva2 Douglas A. Augusto3 Eduardo Krempser3 Marcia Chame3 Raquel Lopes Costa4 Pedro Milet Meirelles5 and Fabiano Thompson6 1National Laboratory for Scientific Computing, Petrópolis, Brazil 2Friedrich-Schiller-University Jena, Jena, Germany 2Rio de Janeiro Botanical Garden, Rio de Janeiro, Brazil 3Oswaldo Cruz Foundation, Rio de Janeiro, Brazil 4National Institute of Cancer, Rio de Janeiro, Brazil 5Federal University of Bahia, Salvador, Brazil 6Federal University of Rio de Janeiro, Rio de Janeiro, Brazil Abstract The unprecedented size of the human population, along with its associated economic activities, have an ever increasing impact on global environments. Across the world, countries are concerned about the growing resource consumption and the capacity of ecosystems to provide them. To effectively conserve biodiversity, it is essential to make indicators and knowledge openly available to decision-makers in ways that they can effectively use them. The development and deployment of mechanisms to produce these indicators depend on having access to trustworthy data from field surveys and automated sensors, biological collections, molec- ular data, and historic academic literature. The transformation of this raw data into synthesized information that is fit for use requires going through many refinement steps. The methodologies and techniques used to manage and analyze this data comprise an area often called biodiversity informatics (or e-Biodiversity). Bio- diversity data follows a life cycle consisting of planning, collection, certification, description, preservation, discovery, integration, and analysis. -
Mitochondrial and Chloroplast Dna-Based Phylogeny of Pelargonium (Geraniaceae)1
CORE Metadata, citation and similar papers at core.ac.uk Provided by Central Archive at the University of Reading American Journal of Botany 87(4): 727±734. 2000. MITOCHONDRIAL AND CHLOROPLAST DNA-BASED PHYLOGENY OF PELARGONIUM (GERANIACEAE)1 FREEK T. B AKKER,2,4 ALASTAIR CULHAM,2 CLIVE E. PANKHURST,2 AND MARY GIBBY3 2Department of Botany, Centre for Plant Diversity and Systematics, The University of Reading, P.O. Box 221, Reading RG6 6AS, UK; and 3Department of Botany, Natural History Museum, London SW7 5BD, UK Overall phylogenetic relationships within the genus Pelargonium (Geraniaceae) were inferred based on DNA sequences from mitochondrial(mt)-encoded nad1 b/c exons and from chloroplast(cp)-encoded trnL (UAA) 59 exon±trnF (GAA) exon regions using two species of Geranium and Sarcocaulon vanderetiae as outgroups. The group II intron between nad1 exons b and c was found to be absent from the Pelargonium, Geranium, and Sarcocaulon sequences presented here as well as from Erodium, which is the ®rst recorded loss of this intron in angiosperms. Separate phylogenetic analyses of the mtDNA and cpDNA data sets produced largely congruent topologies, indicating linkage between mitochondrial and chloroplast genome inheritance. Simultaneous analysis of the combined data sets yielded a well-resolved topology with high clade support exhibiting a basic split into small and large chromosome species, the ®rst group containing two lineages and the latter three. One large chromosome lineage (x 5 11) comprises species from sections Myrrhidium and Chorisma and is sister to a lineage comprising P. mutans (x 5 11) and species from section Jenkinsonia (x 5 9). -
Networks in a Large-Scale Phylogenetic Analysis: Reconstructing Evolutionary History of Asparagales (Lilianae) Based on Four Plastid Genes
Networks in a Large-Scale Phylogenetic Analysis: Reconstructing Evolutionary History of Asparagales (Lilianae) Based on Four Plastid Genes Shichao Chen1., Dong-Kap Kim2., Mark W. Chase3, Joo-Hwan Kim4* 1 College of Life Science and Technology, Tongji University, Shanghai, China, 2 Division of Forest Resource Conservation, Korea National Arboretum, Pocheon, Gyeonggi- do, Korea, 3 Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, United Kingdom, 4 Department of Life Science, Gachon University, Seongnam, Gyeonggi-do, Korea Abstract Phylogenetic analysis aims to produce a bifurcating tree, which disregards conflicting signals and displays only those that are present in a large proportion of the data. However, any character (or tree) conflict in a dataset allows the exploration of support for various evolutionary hypotheses. Although data-display network approaches exist, biologists cannot easily and routinely use them to compute rooted phylogenetic networks on real datasets containing hundreds of taxa. Here, we constructed an original neighbour-net for a large dataset of Asparagales to highlight the aspects of the resulting network that will be important for interpreting phylogeny. The analyses were largely conducted with new data collected for the same loci as in previous studies, but from different species accessions and greater sampling in many cases than in published analyses. The network tree summarised the majority data pattern in the characters of plastid sequences before tree building, which largely confirmed the currently recognised phylogenetic relationships. Most conflicting signals are at the base of each group along the Asparagales backbone, which helps us to establish the expectancy and advance our understanding of some difficult taxa relationships and their phylogeny. -
(Largeflower Triteleia): a Technical Conservation Assessment
Triteleia grandiflora Lindley (largeflower triteleia): A Technical Conservation Assessment © 2003 Ben Legler Prepared for the USDA Forest Service, Rocky Mountain Region, Species Conservation Project January 29, 2007 Juanita A. R. Ladyman, Ph.D. JnJ Associates LLC 6760 S. Kit Carson Cir E. Centennial, CO 80122 Peer Review Administered by Society for Conservation Biology Ladyman, J.A.R. (2007, January 29). Triteleia grandiflora Lindley (largeflower triteleia): a technical conservation assessment. [Online]. USDA Forest Service, Rocky Mountain Region. Available: http://www.fs.fed.us/r2/ projects/scp/assessments/triteleiagrandiflora.pdf [date of access]. ACKNOWLEDGMENTS The time spent and the help given by all the people and institutions mentioned in the References section are gratefully acknowledged. I would also like to thank the Colorado Natural Heritage Program for their generosity in making their files and records available. I also appreciate access to the files and assistance given to me by Andrew Kratz, USDA Forest Service Region 2. The data provided by the Wyoming Natural Diversity Database and by James Cosgrove and Lesley Kennes with the Natural History Collections Section, Royal BC Museum were invaluable in the preparation of the assessment. Documents and information provided by Michael Piep with the Intermountain Herbarium, Leslie Stewart and Cara Gildar of the San Juan National Forest, Jim Ozenberger of the Bridger-Teton National Forest and Peggy Lyon with the Colorado Natural Heritage Program are also gratefully acknowledged. The information provided by Dr. Ronald Hartman and B. Ernie Nelson with the Rocky Mountain Herbarium, Teresa Prendusi with the Region 4 USDA Forest Service, Klara Varga with the Grand Teton National Park, Jennifer Whipple with Yellowstone National Park, Dave Dyer with the University of Montana Herbarium, Caleb Morse of the R.L. -
Xochiquetzallia (Asparagaceae, Brodiaeoideae), a New Genus Segregated from the Paraphyletic Dandya
A peer-reviewed open-access journal PhytoKeys 139: 39–49Xochiquetzallia (2020) , a new genus for Mexico and Dandya circumscription 39 doi: 10.3897/phytokeys.139.46890 RESEARCH ARTICLE http://phytokeys.pensoft.net Launched to accelerate biodiversity research Xochiquetzallia (Asparagaceae, Brodiaeoideae), a new genus segregated from the paraphyletic Dandya Jorge Gutiérrez1, Teresa Terrazas2 1 Área de Biología, Departamento de Preparatoria Agrícola, Universidad Autónoma Chapingo, Carretera México-Texcoco km 38.5, Texcoco 56230, Estado de México, México 2 Instituto de Biología, Universidad Na- cional Autónoma de México, Ciudad Universitaria, Coyoacán 04510, Ciudad de México, México Corresponding author: Jorge Gutiérrez ([email protected]) Academic editor: C. Morden | Received 27 September 2019 | Accepted 16 December 2019 | Published 27 January 2020 Citation: Gutiérrez J, Terrazas T (2020) Xochiquetzallia (Asparagaceae, Brodiaeoideae), a new genus segregated from the paraphyletic Dandya. PhytoKeys 139: 39–49. https://doi.org/10.3897/phytokeys.139.46890 Abstract A new genus, Xochiquetzallia, for the Brodiaeoideae, Asparagaceae family is here proposed. A taxonomic analysis based on morphology highlights its synapomorphies. The characters that distinguish Xochiquet- zallia are the absence of a pith in the gynophore and the presence of an entire stigma. The recognition of Dandya purpusii as a monotypic genus is supported by the development of a short floral tube (< 2 mm) and a pith in the gynophore, as well as a divided stigma shared with the other genera of the Milla clade, Bessera, Jaimehintonia, Petronymphe and Milla. A key to its taxonomic determination is given for both the Xochiquetzallia species and the Milla clade genera. Keywords Asparagales, geophyte, gynophore, Mexico, Milla clade Introduction Dandya H.E. -
Abstract Patrones De Diversidad De Geofitas
MANUEL CUÉLLAR-MARTÍNEZ AND VICTORIA SOSA* Botanical Sciences 94 (4): 687-699, 2016 Abstract Background: Geophytes, plants with underground perennating organs that lose their aerial organs annually, are able to sur- DOI: 10.17129/botsci.763 vive in harsh habitats. This life form is common in the monocots that inhabit Mediterranean climates around the world. In Mexico only the northern area of Baja California has this type of climate. Hypothesis: In this study, we recorded the species and distribution of Mexican geophyte monocots to pinpoint diversity hot- spots. Our hypothesis is that the highest diversity of geophytes will be found in biogeographic areas with complex topography and seasonal climate not only in the north of the Baja California Peninsula. Data description: Records of geophytes were taken from different sources, collections, taxonomic references and diversity databases. Geophyte locations were mapped in the context of biogeographic and protected areas. Climate preferences were estimated using bioclimatic variables and by a Principal Component Analysis we identified the most significant variables explaining distribution of geophytes. Results: The Mexican geophyte flora is composed of 476 species, approximately 10 % of the total diversity of monocots. Echeandia and Tigridia were the two most diverse genera. This flora is dominated by the taxa of Orchidaceae, Asparagaceae and Iridaceae, and ten small endemic genera were recorded. Geophyte diversity was highest in two biogeographic provinces: the Trans-Mexican Volcanic Belt and the Sierra Madre del Sur, in dry forests such as oak-pine, seasonally dry tropical forests and semi-arid shrubby vegetation. Three bioclimatic variables: temperature seasonality, annual precipitation and precipitation of the wettest quarter resulted significant for understanding distribution of geophytes. -
Systematics and Taxonomy: Follow-Up
HOUSE OF LORDS Science and Technology Committee 5th Report of Session 2007–08 Systematics and Taxonomy: Follow-up Report with Evidence Ordered to be printed 21 July 2008 and published 13 August 2008 Published by the Authority of the House of Lords London : The Stationery Office Limited £price HL Paper 162 Science and Technology Committee The Science and Technology Committee is appointed by the House of Lords in each session “to consider science and technology”. Current Membership The Members of the Science and Technology Committee are: Lord Colwyn Lord Crickhowell Lord Haskel Lord Howie of Troon Lord Krebs Lord May of Oxford Lord Methuen Earl of Northesk Lord O’Neill of Clackmannan Lord Patel Earl of Selborne Lord Sutherland of Houndwood (Chairman) Lord Taverne Lord Warner Information about the Committee and Publications Information about the Science and Technology Committee, including details of current inquiries, can be found on the internet at http://www.parliament.uk/hlscience/. Committee publications, including reports, press notices, transcripts of evidence and government responses to reports, can be found at the same address. Committee reports are published by The Stationery Office by Order of the House. General Information General information about the House of Lords and its Committees, including guidance to witnesses, details of current inquiries and forthcoming meetings is on the internet at: http://www.parliament.uk/about_lords/about_lords.cfm. Contacts for the Science and Technology Committee All correspondence should be addressed to: The Clerk of the Science and Technology Committee Committee Office House of Lords London SW1A 0PW The telephone number for general enquiries is 020 7219 6075. -
International Code of Nomenclature for Cultivated Plants
INTERNATIONAL CODE OF NOMENCLATURE FOR CULTIVATED PLANTS (ICNCP or Cultivated Plant Code) incorporating the Rules and Recommendations for naming plants in cultivation Ninth Edition Adopted by the International Union of Biological Sciences International Commission for the Nomenclature of Cultivated Plants Prepared and edited by C.D. Brickell (Commission Chairman), C. Alexander, J.J. Cubey, J.C. David, M.H.A. Hoffman, A.C. Leslie, V. Malécot, Xiaobai Jin, members of the Editorial Committee June, 2016 ISSN 1813-9205 ISBN 978-94-6261-116-0, Scripta Horticulturae Number 18 Published by ISHS, June 2016 Executive Director of ISHS: Ir. J. Van Assche ISHS Secretariat, PO Box 500, 3001 Leuven 1, Belgium Printed by Drukkerij Station Drukwerk, PO Box 3099, 2220 CB Katwijk aan Zee, The Netherlands © 2016 by the International Society for Horticultural Science (ISHS). All rights reserved. No part of this book may be reproduced and/or published in any form or by any means, electronic or mechanical, including photocopying, microfilm and recording, or by any information storage and retrieval system, without written permission from the publishers. Photograph on the front cover: Lettuce trial 2003. Credit: RHS / Jacquie Gray. Contents CONTENTS Foreword v Membership of the IUBS International Commission for the Nomenclature of Cultivated vii Plants Preface ix Comparison between the 2009 Code and this edition xii New provisions xv Important dates in this Code xvi Previous editions of this Code xvii PREAMBLE 1 DIVISION I: PRINCIPLES 3 DIVISION II: RULES AND