DOCSLIB.ORG

Sistema Universitario Ana G. Méndez Universidad Del Turabo

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Sistema Universitario Ana G. Méndez Universidad Del Turabo Sistema Universitario Ana G. Méndez Universidad del Turabo 52nd ACS Junior Technical Meeting 37th Puerto Rico Interdisciplinary Scientific Meeting PROGRAM AGENDA April 28/2018 52nd ACS Junior Technical Meeting 37th Puerto Rico Interdisciplinary Scientific Meeting (PRISM) Sistema Universitario Ana G. Méndez Universidad del Turabo Gurabo, Puerto Rico April 28/2018 SPONSORED BY American Chemical Society – Puerto Rico Section Puerto Rico Louis Stokes Alliance for Minority Participation Resource Center for Science and Engineering, University of Puerto Rico Central Administration Sistema Universitario Ana G. Mendez, Universidad del Turabo 3 52nd ACS Junior Technical Meeting 37th Puerto Rico Interdisciplinary Scientific Meeting (PRISM) Sistema Universitario Ana G. Méndez Universidad del Turabo April 28/2018 Table of Contents Map Universidad del Turabo - Gurabo, Puerto Rico .............................................................. 7 Invited Speaker ........................................................................................................................... 13 Program Agenda ........................................................................................................................ 17 Oral Sessions .............................................................................................................................. 19 Agricultural Sciences ................................................................................................................. 21 Astronomy ................................................................................................................................... 23 Chemistry .................................................................................................................................... 25 Computer Sciences ..................................................................................................................... 39 Electronics ................................................................................................................................... 41 Engineering ................................................................................................................................. 43 Environmental Sciences............................................................................................................. 51 General Sciences ......................................................................................................................... 61 Geosciences ................................................................................................................................. 63 Life/Biological Sciences ............................................................................................................ 67 Mathematics ................................................................................................................................ 93 Pharmaceutical Sciences ............................................................................................................ 95 Physics ......................................................................................................................................... 97 Poster Sessions ......................................................................................................................... 101 Agricultural Sciences ............................................................................................................... 103 Chemistry .................................................................................................................................. 104 Engineering ............................................................................................................................... 108 Environmental Sciences........................................................................................................... 110 General Sciences ....................................................................................................................... 112 Geosciences ............................................................................................................................... 113 Industrial Pharmacy ................................................................................................................ 114 Life / Biological Sciences ........................................................................................................ 115 Mathematics .............................................................................................................................. 119 Pharmaceutical Sciences .......................................................................................................... 120 Physics ....................................................................................................................................... 121 5 Map - Universidad del Turabo - Gurabo, Puerto Rico 7 52nd ACS Junior Technical Meeting 37th Puerto Rico Interdisciplinary Scientific Meeting (PRISM) Sistema Universitario Ana G. Méndez Universidad del Turabo Organizing and Scientific Committees Puerto Rico Local Section American Chemical Society Officers 2018 Chair Dr. Carlos R. Cabrera Elected Chair Dr. Ángela González Immediate Past Chair Dr. José Ramírez Secretary Angel G. Colón Santiago Treasurer Dr. Jorge Colón Northeastern Representative Dr. Laura Santiago Southwestern Representative Dr. Ubaldo Córdova Counselor Dr. Edmy J. Ferrer Counselor Dr. Néstor Carballeira Counselor Myrna Otaño Counselor Dr. Jorge Colón Alternate Counselor Orlando J. Morales Alternate Counselor Dr. Bárbara Casañas Alternate Counselor Dr. Brenda Ramos Director at Large Dr. Ingrid Montes Sistema Universitario Ana G. Méndez Universidad del Turabo Research and JTM/PRISM Committee President Dr. José F. Méndez Méndez Acting Chancellor Dr. David Méndez Vice Chancellor Sponsored Research Dra. Jacqueline A. Mullen Hunt Dean, School of Science Dr. Teresa Lipsett Ruiz Dean, School of Engineering Dr. Rolando García González Associate Dean, School of Engineering Dr. Idalides Vergara Laurens Committee President Dr. Miguel Goenaga Jiménez Register Mrs. Zoraida Ortiz Muñoz Physical Facilities Manager Eng. Mayra Rodríguez Collaborators and Special Thanks: Associate Degree Director Mr. Nelson Martínez Administrative Director Mrs. Daisy Román Student Service Director Mrs. Luz Vilches Administrative Assistant Mrs. Lydia Centeno 9 PR-LSAMP Co-PI Dr. Eduardo Nicolau Director Dr. Pablo A. Llerandi Academic Coordinator Prof. Javier Figueroa Santiago Management Coordinator Ms. Zulma I. Crespo Figueroa, MS UPR-Central Administration Acting UPR President/PR-LSAMP PI Dr. Darrell F. Hillman Barrera Acting UPR Vice President Dr. Ilka C. Ríos Reyes Acting Associate Vice President for Dr. José Rodríguez Medina Research and Innovation Acting Director of the Resource Center Dr. Ana R. Guadalupe for Science and Engineering 11 52nd ACS Junior Technical Meeting 37th Puerto Rico Interdisciplinary Scientific Meeting (PRISM) Sistema Universitario Ana G. Méndez Universidad del Turabo April 28/2018 INVITED SPEAKER Jorge Vélez-Juarbe, PhD Mammalogy Assistant Curator, Jorge Vélez-Juarbe, holds a PhD from Howard University, where he studied the morphology, systematics, and paleobiology of fossil sirenians and cetaceans. After receiving his doctorate in 2012, Dr. Vélez-Juarbe held Post-Doctoral Associate positions at the Florida Museum of Natural History, the Smithsonian Tropical Research Institute in Panama, and at California State University Fullerton before being hired as Mammalogy Assistant Curator of Marine Mammals at our Museum. Dr. Vélez-Juarbe's appointment involves curatorial responsibility for both out fossil and extant marine mammal collections. Some of his current projects include: diversity and dynamics of ancient marine mammal herbivore communities, marine mammals from Central America and the Caribbean, Evolution of Cenozoic marine faunas of the Eastern Pacific region, Evolution and diversification of early odontocetes and mysticetes, and paleobiogeography of Cenozoic vertebrates from the Caribbean region. 13 52nd ACS Junior Technical Meeting 37th Puerto Rico Interdisciplinary Scientific Meeting (PRISM) Sistema Universitario Ana G. Méndez Universidad del Turabo April 28/2018 INVITED SPEAKER Rafael Irizarry, PhD Rafael Irizarry received his Bachelor’s in Mathematics in 1993 from the University of Puerto Rico and went on to receive a Ph.D. in Statistics in 1998 from the University of California, Berkeley. His thesis work was on Statistical Models for Music Sound Signals. He joined the faculty of the Department of Biostatistics in the Johns Hopkins Bloomberg School of Public Health in 1998 and was promoted to Professor in 2007. Currently, Professor of Biostatistics and Computational Biology at the Dana-Farber Cancer Institute and a Professor of Biostatistics at Harvard School of Public Health. Since 1999, Rafael Irizarry’s work has focused on Genomics and Computational Biology problems. In particular, he has worked on the analysis and signal processing of microarray, next-generation sequencing, and genomic data. He is currently interested in leveraging his knowledge in translational work, e.g. developing diagnostic tools and discovering biomarkers. Professor Irizarry also develops open source software implementing his statistical methodology. His software tools are widely used and he is one of the leaders and founders of the Bioconductor Project, an open source and open development software project for the analysis
Load more

Recommended publications
  • Pine Island Ridge Management Plan
    Pine Island Ridge Conservation Management Plan Broward County Parks and Recreation May 2020 Update of 1999 Management Plan Table of Contents A. General Information ..............................................................................................................3 B. Natural and Cultural Resources ...........................................................................................8 C. Use of the Property ..............................................................................................................13 D. Management Activities ........................................................................................................18 E. Works Cited ..........................................................................................................................29 List of Tables Table 1. Management Goals…………………………………………………………………21 Table 2. Estimated Costs……………………………………………………………….........27 List of Attachments Appendix A. Pine Island Ridge Lease 4005……………………………………………... A-1 Appendix B. Property Deeds………….............................................................................. B-1 Appendix C. Pine Island Ridge Improvements………………………………………….. C-1 Appendix D. Conservation Lands within 10 miles of Pine Island Ridge Park………….. D-1 Appendix E. 1948 Aerial Photograph……………………………………………………. E-1 Appendix F. Development Agreement………………………………………………….. F-1 Appendix G. Plant Species Observed at Pine Island Ridge……………………………… G-1 Appendix H. Wildlife Species Observed at Pine Island Ridge ……... …………………. H-1 Appendix
    [Show full text]
  • Plant Species List for Bob Janes Preserve
    Plant Species List for Bob Janes Preserve Scientific and Common names obtained from Wunderlin 2013 Scientific Name Common Name Status EPPC FDA IRC FNAI Family: Azollaceae (mosquito fern) Azolla caroliniana mosquito fern native R Family: Blechnaceae (mid-sorus fern) Blechnum serrulatum swamp fern native Woodwardia virginica Virginia chain fern native R Family: Dennstaedtiaceae (cuplet fern) Pteridium aquilinum braken fern native Family: Nephrolepidaceae (sword fern) Nephrolepis cordifolia tuberous sword fern exotic II Nephrolepis exaltata wild Boston fern native Family: Ophioglossaceae (adder's-tongue) Ophioglossum palmatum hand fern native E I G4/S2 Family: Osmundaceae (royal fern) Osmunda cinnamomea cinnamon fern native CE R Osmunda regalis royal fern native CE R Family: Polypodiaceae (polypody) Campyloneurum phyllitidis long strap fern native Phlebodium aureum golden polypody native Pleopeltis polypodioides resurrection fern native Family: Psilotaceae (whisk-fern) Psilotum nudum whisk-fern native Family: Pteridaceae (brake fern) Acrostichum danaeifolium giant leather fern native Pteris vittata China ladder break exotic II Family: Salviniaceae (floating fern) Salvinia minima water spangles exotic I Family: Schizaeaceae (curly-grass) Lygodium japonicum Japanese climbing fern exotic I Lygodium microphyllum small-leaf climbing fern exotic I Family: Thelypteridaceae (marsh fern) Thelypteris interrupta hottentot fern native Thelypteris kunthii widespread maiden fern native Thelypteris palustris var. pubescens marsh fern native R Family: Vittariaceae
    [Show full text]
  • Understory Plants on Reforested Pastures at Finca Alexis, Puntarenas, Costa Rica
    Project report Understory plants on reforested pastures at Finca Alexis, Puntarenas, Costa Rica PP Tropenbotanik und Pflanzen-Tier-Interaktionen in Costa Rica by Angelika Till WS 19/20 Supervisor: Mag. Dr. Anton Weissenhofer Introduction Costa Rica, as one of the most biodiverse countries worldwide, accommodates about 9,361 plant species, including ferns and fern allies, Gymnosperms and Angiosperms (Hammel et al., 2004). There are several studies about plant biodiversity in the tropics, but since there is such an immense species richness, there is still a significant gap in the knowledge of several plant groups, e.g. understorey plants. Understory plants make up about half of the Costa Rican flora, consisting of herbs (27%), treelets (16%), and part of vines (16%) (Hammel et al., 2004). Nevertheless, most of the conducted studies are concerned with tree biodiversity (Gentry & Dodson, 1987a; Huber, 1996; Huber et al., 2008; Mayfield & Daily, 2005). This is why this survey pursues the study of understory plants in the Golfo Dulce region where the La Gamba Field Station is situated. A first survey on the herbaceous flora around La Gamba has been conducted by Holzer et al. (2016) during a field course of the University of Vienna in 2016. This study focuses on the understory flora of Finca AleXis. Finca AleXis is a former pasture with a farmhouse (Casa AleXis) of the Tropical station at the Fila Consteña mountain range (Fila Cal) that was converted into a simple field station. It is part of the COBIGA project (Corredor Biológico La Gamba) with the goal to form a rainforest corridor between the tropical mountain rainforest of Fila Cal and the lowland rainforest of the Golfo Dulce (https://www.regenwald.at/en/project-information/biological-corridor- cobiga-forest-and-climate-protection).
    [Show full text]
  • Distrito Regional De Manejo Integrado Cuervos Plan De
    DISTRITO REGIONAL DE MANEJO INTEGRADO CUERVOS PLAN DE MANEJO Convenio Marco 423-2016, Acta de ejecución CT-2016-001532-10 - Cornare No 564-2017 Suscrito entre Cornare y EPM “Continuidad del convenio interadministrativo 423-2016 acta de ejecución CT-2016-001532-10 suscrito entre Cornare y EPM para la implementación de proyectos de conservación ambiental y uso sostenible de los recursos naturales en el Oriente antioqueño” PRESENTADO POR: GRUPO BOSQUES Y BIODIVERSIDAD CORNARE EL Santuario – Antioquia 2018 REALIZACIÓN Corporación Autónoma Regional de las Cuencas de los Ríos Negro y Nare – Cornare GRUPO BOSQUES Y BIODIVERSIDAD COORDINADORA DE GRUPO BOSQUES Y BIODIVERSIDAD ELSA MARIA ACEVEDO CIFUENTES Grupo Bosques y Biodiversidad SUPERVISOR DAVID ECHEVERRI LÓPEZ Biólogo (E), Grupo Bosques y Biodiversidad SUPERVISOR EPM YULIE ANDREA JÍMENEZ GUZMAN Ingeniera Forestal, Epm EQUIPO PROFESIONAL GRUPO BOSQUES Y BIODIVERSIDAD LUZ ÁNGELA RIVERO HENAO Ingeniera Forestal, Grupo Bosques y Biodiversidad EDUARDO ANTONIO RIOS PINEDO Ingeniero Forestal, Grupo Bosques y Biodiversidad DANIEL MARTÍNEZ CASTAÑO Biólogo, Grupo Bosques y Biodiversidad STIVEN BARRIENTOS GÓMEZ Ingeniero Ambiental, Grupo Bosques y Biodiversidad NICOLAS RESTREPO ROMERO Ingeniero Ambiental, Grupo Bosques y Biodiversidad JULIETH VELASQUEZ AGUDELO Ingeniera Forestal, Grupo Bosques y Biodiversidad SANTIAGO OSORIO YEPES Ingeniero Forestal, Grupo Bosques y Biodiversidad TABLA DE CONTENIDO 1. INTRODUCCIÓN ..........................................................................................................
    [Show full text]
  • CARIBBEAN REGION - NWPL 2014 FINAL RATINGS User Notes: 1) Plant Species Not Listed Are Considered UPL for Wetland Delineation Purposes
    CARIBBEAN REGION - NWPL 2014 FINAL RATINGS User Notes: 1) Plant species not listed are considered UPL for wetland delineation purposes. 2) A few UPL species are listed because they are rated FACU or wetter in at least one Corps region.
    [Show full text]
  • Corkscrew Permit Modification, January 7, 2014 [PDF]
    FLORIDA DEPARTMENT OF ENVIRONMENTAL PROTECTION RICK SCOTT GOVERNOR BOB MARTINEZ CENTER 2600 BLAIRSTONE ROAD HERSCHEL T. VINYARD JR. TALLAHASSEE, FLORIDA 32399-2400 SECRETARY January 6, 2014 Mr. Jerome Ryan EarthMark Southwest Florida Mitigation, LLC c/o Jerome Ryan, Managing Member Post Office Box 621990 Oviedo, Florida 32762-1990 Dear Mr. Ryan: RE: Corkscrew Regional Mitigation Bank ---Permit #0198035-001, Lee County ---Approval of Modification #0198035-023 Your request to modify this permit has been received and reviewed by Florida Department of Environmental Protection (Department) staff. This modification revises the target community types and success criteria for the Bank’s restoration area based on a more detailed description of the Bank’s site characteristics and historic natural communities typical of South Florida. This modification also eliminates phase boundaries and revises the construction plans. There is no change to the mitigation service area and there are no major changes to the construction schedule or the number mitigation credits assigned. This major modification provides the opportunity to revise, clarify and update all permit documents to account for completed work, in addition to incorporating the current modifications described below. The attached modified permit, figures, and attachments will replace the original permit. The original permit for the Corkscrew Regional Mitigation Bank (CRMB) was issued on June 4, 2004 and was later modified on February 10, 2006 and November 8, 2006. The ~632.5-acre CRMB project is designed to enhance water quality and wetland function by eliminating agricultural drainage and removing cattle, by grading and planting pasture areas to restore or create natural communities, by treating and managing exotic and nuisance vegetation on native lands, and by implementing a long-term management program, including prescribed fires.
    [Show full text]
  • Appendix B: Plant Species List for Pop Ash Creek Preserve Common and Scientifc Names for This List Were Obtained from Wunderlin Hansen, 2003
    Appendix B: Plant Species List for Pop Ash Creek Preserve Common and scientifc names for this list were obtained from Wunderlin Hansen, 2003 Scientific Name Common Name Native/Exotic EPPC FDACS IRC FNAI Family: Blechnaceae (min-sorus fern) Blechnum serrulatum swamp fern native Family: Nephrolepidaceae (sword fern) Nephrolepis exaltata wild Boston fern native Osmunda regalis royal fern native Family: Polypodiaceae (polypod) Phlebodium aureum golden polypody native Family: Pteridaceae (brake fern) Pteris vittata Chinese ladder brake fern exotic II Family: Schizaeaceae (curly-grass) Lygodium microphyllum Old World climbing fern exotic I Family: Pinaceae (pine) Pinus elliottii var. densa south Florida slash pine native Family: Agavaceae (agave) Yucca aloifolia Spanish bayonet native Family: Alismataceae (water plantain) Sagittaria graminea grassy arrowhead native R Sagittaria lancifolia bulltongue arrowhead native Family: Amaryllidaceae (amaryllis) Crinum americanum string-lily native Hymenocallis palmeri alligatorlily native Family: Arecaceae (palm) Sabal palmetto cabbage palm native Serenoa repens saw palmetto native Family: Bromeliaceae (pineapple) Tillandsia paucifolia potbelly airplant native Tillandsia recurvata ballmoss native Tillandsia usneoides Spanish moss native Tillandsia utriculata giant airplant native E Family: Commelinaceae (spiderwort) Commelina diffusa var. diffusa common dayflower exotic Family: Cyperaceae (sedge) Cladium jamaicense Jamaica swamp sawgrass native Cyperus esculentus yellow nutgrass exotic Cyperus flavescens
    [Show full text]
  • George J. Wilder Jean M. Mccollom Naples Botanical Garden Natural Ecosystems 4820 Bayshore Drive 985 Sanctuary Road Naples, Florida 34112-7336, U.S.A
    A FLORISTIC INVENTORY OF CORKSCREW SWAMP SANCTUARY (COLLIER COUNTY AND LEE COUNTY), FLORIDA, U.S.A. George J. Wilder Jean M. McCollom Naples Botanical Garden Natural Ecosystems 4820 Bayshore Drive 985 Sanctuary Road Naples, Florida 34112-7336, U.S.A. Naples, Florida 34120-4800, U.S.A [email protected] [email protected] ABSTRACT Documented presently as growing wild within Corkscrew Swamp Sanctuary (Collier Co. and Lee Co., Florida, U.S.A) are individuals of 126 families, 401 genera, 756 species, and 773 infrageneric taxa of vascular plants. Those data, combined with records from previous workers, yield a total of 770 species and 787 infrageneric taxa documented for the Sanctuary. Of the 773 infrageneric taxa documented presently, 611 (79.0%) are native to Florida. Herein, seven main kinds of habitats are recognized for the study area, and individual taxa inhabit one or more of those habitats. Twenty-nine presently reported infrageneric taxa are listed as Endangered (16 taxa) or Threatened in Florida (13 taxa). For South Florida, 36 infrageneric taxa listed as Extirpated (3 taxa), as Historical (5 taxa), or as Critically Imperiled (28 taxa) were documented during this study. RESUMEN Existen documentados individuos de 126 familias, 401 géneros, 756 especies, y 773 taxa infragenéricos de plantas vasculares que actual- mente crecen silvestres en Corkscrew Swamp Sanctuary (Collier Co. y Lee Co., Florida, U.S.A). Estos datos, combinados con los registros de investigadores anteriores, dan un total de 770 especies y 787 taxa infragenéricos documentados para el Sanctuary. De los 773 taxa infra- genéricos documentados actualmente, 611 (79.0%) son nativos de Florida.
    [Show full text]
  • Tri-Ology Vol 58, No. 1
    FDACS-P-00124 January - March 2020 Volume 59, Number 1 TRI- OLOGY A PUBLICATION FROM THE DIVISION OF PLANT INDUSTRY, BUREAU OF ENTOMOLOGY, NEMATOLOGY, AND PLANT PATHOLOGY Division Director, Trevor R. Smith, Ph.D. BOTANY ENTOMOLOGY NEMATOLOGY PLANT PATHOLOGY Providing information about plants: Identifying arthropods, taxonomic Providing certification programs and Offering plant disease diagnoses native, exotic, protected and weedy research and curating collections diagnoses of plant problems and information Florida Department of Agriculture and Consumer Services • Division of Plant Industry 1 Argemone mexicana, Mexican prickly poppy Photo by Roger Hammer ABOUT TRI-OLOGY TABLE OF CONTENTS The Florida Department of Agriculture and Consumer Services- Division of Plant Industry’s (FDACS-DPI) Bureau of Entomology, HIGHLIGHTS 03 Nematology, and Plant Pathology (ENPP), including the Botany Noteworthy examples from the diagnostic groups Section, produces TRI-OLOGY four times a year, covering three throughout the ENPP Bureau. months of activity in each issue. The report includes detection activities from nursery plant inspections, routine and emergency program surveys, and BOTANY 04 requests for identification of plants and pests from the public. Samples are also occasionally sent from other states or countries Quarterly activity reports from Botany and selected plant identification samples. for identification or diagnosis. HOW TO CITE TRI-OLOGY Section Editor. Year. Section Name. P.J. Anderson and G.S. Hodges ENTOMOLOGY 07 (Editors). TRI-OLOGY Volume (number): page. [Date you accessed site.] Quarterly activity reports from Entomology and samples reported as new introductions or interceptions. For example: S.E. Halbert. 2015. Entomology Section. P.J. Anderson and G.S. Hodges (Editors). TRI-OLOGY 54(4): 9.
    [Show full text]
  • Original Research Paper Harshal V. Poojari* Botany Jayananda Tosh
    VOLUME - 10, ISSUE - 01, JANUARY - 2021 • PRINT ISSN No. 2277 - 8160 • DOI : 10.36106/gjra Original Research Paper Botany ADDITION TO THE FLORA OF MAHARASHTRA STATE, INDIA Department of Botany, Faculty of Science, S.D Arts, V.S Apte Commerce and Harshal V. Poojari* M.H. Mehta Science College, Palghar, University of Mumbai, Maharashtra, India.*Corresponding Author Department of Botany, Faculty of Science, S.D Arts, V.S Apte Commerce and Jayananda Tosh M.H. Mehta Science College, Palghar, University of Mumbai, Maharashtra, India. Crotalaria goreensis Guill. & Perr., Mitracarpus hirtus (L.) DC., and Spermacoce remota Lam. Tabl., are ABSTRACT three plant species reported for the rst time in Palghar taluka, Palghar district, Maharashtra state, India and is a new addition to the ora of Maharashtra state. KEYWORDS : Crotalaria goreensis, Mitracarpus hirtus, Spermacoce remota, Palghar taluka, Palghar district, Maharashtra state, New record, Paplionaceae, Rubiaceae. 1. INTRODUCTION 3. Results Biota is a collective composition of all the plant and animal Enumeration species residing in the particular region. It won't be wrong in Family: Paplionaceae Giseke. considering plants as the main component of forest, grassland, terrestrial ecosystem etc., due to their innate ability 1) Crotalaria goreensis Guill. & Perr., Fl. Seneg. Tent. 165. to synthesize food material through photosynthesis. Flora of a 1832; Bhatt in J. Bombay Nat. Hist. Soc., 96(1): 174. 1999; region deals with the study of oristic diversity which Crotalaria macrostipula Steud. Ex. A. Rich., Tent. Fl. Abyss. 1: eventually helps in documenting abundance and rarity status 153. 1847; Crotalaria goreensis subsp. macrostipula (Steud. of plant species. Such data are indeed helpful in developing Ex.
    [Show full text]
  • Woodiness Within the Spermacoceae–Knoxieae Alliance (Rubiaceae): Retention of the Basal Woody Condition in Rubiaceae Or Recent Innovation?
    Annals of Botany 103: 1049–1064, 2009 doi:10.1093/aob/mcp048, available online at www.aob.oxfordjournals.org Woodiness within the Spermacoceae–Knoxieae alliance (Rubiaceae): retention of the basal woody condition in Rubiaceae or recent innovation? Frederic Lens1,*, Inge Groeninckx1, Erik Smets1,2 and Steven Dessein3 1Laboratory of Plant Systematics, Institute of Botany and Microbiology, K.U. Leuven, Kasteelpark Arenberg 31 Box 2437, BE-3001 Leuven, Belgium, 2Nationaal Herbarium Nederland – Leiden University Branch, P.O. Box 9514, NL-2300 RA Leiden, The Netherlands and 3National Botanic Garden of Belgium, Domein van Bouchout, Nieuwelaan 38, BE-1860 Meise, Belgium Received: 12 November 2008 Returned for revision: 11 December 2008 Accepted: 16 January 2009 Published electronically: 11 March 2009 † Background and Aims The tribe Spermacoceae is essentially a herbaceous Rubiaceae lineage, except for some species that can be described as ‘woody’ herbs, small shrubs to treelets, or lianas. Its sister tribe Knoxieae con- tains a large number of herbaceous taxa, but the number of woody taxa is higher compared to Spermacoceae. The occurrence of herbaceous and woody species within the same group raises the question whether the woody taxa are derived from herbaceous taxa (i.e. secondary woodiness), or whether woodiness represents the ancestral state (i.e. primary woodiness). Microscopic observations of wood anatomy are combined with an independent molecu- lar phylogeny to answer this question. † Methods Observations of wood anatomy of 21 woody Spermacoceae and eight woody Knoxieae species, most of them included in a multi-gene molecular phylogeny, are carried out using light microscopy. † Key Results Observations of wood anatomy in Spermacoceae support the molecular hypothesis that all the woody species examined are secondary derived.
    [Show full text]
  • Texto Completo
    UNIVERSIDAD NACIONAL AGRARIA LA MOLINA ESCUELA DE POSGRADO MAESTRÍA EN AGRICULTURA SUSTENTABLE “MALEZAS ASOCIADAS AL CULTIVO DE CAFÉ EN LA SELVA CENTRAL DEL PERÚ” Presentada por: LEONEL EDUARDO ALVARADO HUAMÁN TESIS PARA OPTAR EL GRADO DE MAESTRO MAGISTER SCIENTIAE EN AGRICULTURA SUSTENTABLE Lima - Perú 2018 UNIVERSIDAD NACIONAL AGRARIA LA MOLINA ESCUELA DE POSGRADO MAESTRÍA EN AGRICULTURA SUSTENTABLE “MALEZAS ASOCIADAS AL CULTIVO DE CAFÉ EN LA SELVA CENTRAL DEL PERÚ” TESIS PARA OPTAR EL GRADO DE MAESTRO MAGISTER SCIENTIAE EN AGRICULTURA SUSTENTABLE Presentada por: LEONEL EDUARDO ALVARADO HUAMÁN Sustentada y aprobada ante el siguiente jurado: Ph. D. Salomón Helfgott Lerner Dr. Alberto Julca Otiniano PRESIDENTE PATROCINADOR Mg. Sc. Viviana Castro Cepero Mg. Sc. Jorge Tejada Soraluz MIEMBRO MIEMBRO DEDICATORIA A todos mis seres queridos, especialmente a mi mamá, papá y hermana. AGRADECIMIENTOS Al Dr. Alberto Julca, asesor, maestro y amigo quien me da la confianza y motivación para continuar en este camino. A la profesora Mg. Sc. Viviana Castro Cepero, por sus consejos y la oportunidad brindada para realizar este trabajo de investigación. Al Ph. D. Salomón Helfgott Lerner por sus comentarios y recomendaciones que ayudaron a mejorar este trabajo. Al Mg. Sc. Jorge Tejada Soraluz por sus ideas y apoyo en todas las fases de este estudio. ÍNDICE GENERAL I. INTRODUCCIÓN ..................................................................................................................... 1 II. REVISIÓN DE LITERATURA ................................................................................................
    [Show full text]