Conservation Research in the African Rain Forests a Technical Handbook
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Leaf Anatomy and C02 Recycling During Crassulacean Acid Metabolism in Twelve Epiphytic Species of Tillandsia (Bromeliaceae)
Int. J. Plant Sci. 154(1): 100-106. 1993. © 1993 by The University of Chicago. All rights reserved. 1058-5893/93/5401 -0010502.00 LEAF ANATOMY AND C02 RECYCLING DURING CRASSULACEAN ACID METABOLISM IN TWELVE EPIPHYTIC SPECIES OF TILLANDSIA (BROMELIACEAE) VALERIE S. LOESCHEN,* CRAIG E. MARTIN,' * MARIAN SMITH,t AND SUZANNE L. EDERf •Department of Botany, University of Kansas, Lawrence, Kansas 66045-2106; and t Department of Biological Sciences, Southern Illinois University, Edwardsville, Illinois 62026-1651 The relationship between leaf anatomy, specifically the percent of leaf volume occupied by water- storage parenchyma (hydrenchyma), and the contribution of respiratory C02 during Crassulacean acid metabolism (CAM) was investigated in 12 epiphytic species of Tillandsia. It has been postulated that the hydrenchyma, which contributes to C02 exchange through respiration only, may be causally related to the recently observed phenomenon of C02 recycling during CAM. Among the 12 species of Tillandsia, leaves of T. usneoides and T. bergeri exhibited 0% hydrenchyma, while the hydrenchyma in the other species ranged from 2.9% to 53% of leaf cross-sectional area. Diurnal malate fluctuation and nighttime atmospheric C02 uptake were measured in at least four individuals of each species. A significant excess of diurnal malate fluctuation as compared with atmospheric C02 absorbed overnight was observed only in T. schiedeana. This species had an intermediate proportion (30%) of hydrenchyma in its leaves. Results of this study do not support the hypothesis that C02 recycling during CAM may reflect respiratory contributions of C02 from the tissue hydrenchyma. Introduction tions continue through fixation of internally re• leased, respired C02 (Szarek et al. -
Conserving Wildlife in African Landscapes Kenya’S Ewaso Ecosystem
Smithsonian Institution Scholarly Press smithsonian contributions to zoology • number 632 Smithsonian Institution Scholarly Press AConserving Chronology Wildlife of Middlein African Missouri Landscapes Plains Kenya’sVillage Ewaso SitesEcosystem Edited by NicholasBy Craig J. M. Georgiadis Johnson with contributions by Stanley A. Ahler, Herbert Haas, and Georges Bonani SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTION Emphasis upon publication as a means of “diffusing knowledge” was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: “It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge.” This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, com- mencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Botany Smithsonian Contributions to History and Technology Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Museum Conservation Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoology In these series, the Institution publishes small papers and full-scale monographs that report on the research and collections of its various museums and bureaus. The Smithsonian Contributions Series are distributed via mailing lists to libraries, universities, and similar institu- tions throughout the world. Manuscripts submitted for series publication are received by the Smithsonian Institution Scholarly Press from authors with direct affilia- tion with the various Smithsonian museums or bureaus and are subject to peer review and review for compliance with manuscript preparation guidelines. -
Method to Estimate Dry-Kiln Schedules and Species Groupings: Tropical and Temperate Hardwoods
United States Department of Agriculture Method to Estimate Forest Service Forest Dry-Kiln Schedules Products Laboratory Research and Species Groupings Paper FPL–RP–548 Tropical and Temperate Hardwoods William T. Simpson Abstract Contents Dry-kiln schedules have been developed for many wood Page species. However, one problem is that many, especially tropical species, have no recommended schedule. Another Introduction................................................................1 problem in drying tropical species is the lack of a way to Estimation of Kiln Schedules.........................................1 group them when it is impractical to fill a kiln with a single Background .............................................................1 species. This report investigates the possibility of estimating kiln schedules and grouping species for drying using basic Related Research...................................................1 specific gravity as the primary variable for prediction and grouping. In this study, kiln schedules were estimated by Current Kiln Schedules ..........................................1 establishing least squares relationships between schedule Method of Schedule Estimation...................................2 parameters and basic specific gravity. These relationships were then applied to estimate schedules for 3,237 species Estimation of Initial Conditions ..............................2 from Africa, Asia and Oceana, and Latin America. Nine drying groups were established, based on intervals of specific Estimation -
The Condensed Tannins of Okoume (Aucoumea Klaineana Pierre)
www.nature.com/scientificreports OPEN The condensed tannins of Okoume (Aucoumea klaineana Pierre): A molecular structure and thermal stability study Starlin Péguy Engozogho Anris 1,2*, Arsène Bikoro Bi Athomo1,2, Rodrigue Safou Tchiama2,3, Francisco José Santiago-Medina4, Thomas Cabaret1, Antonio Pizzi4 & Bertrand Charrier1 In order to promote convenient strategies for the valorization of Aucoumea klaineana Pierre (Okoume) plywood and sawmill wastes industry in the felds of adhesives and composites, the total phenolic content of Okoume bark, sapwood and heartwood was measured. The molecular structure of tannins extracted from the bark was determined by Matrix Assisted Laser Desorption/Ionization Time-Of-Flight (Maldi-ToF) mass spectrometry and Fourier transform infrared spectroscopy (FTIR). The total phenolic content displayed signifcant diference (p = 0.001) between the bark, sapwood and heartwood which decreased as follows: 6 ± 0.4, 2 ± 0.8 and 0.7 ± 0.1% respectively. The pro-anthocyanidins content was also signifcantly diferent (p = 0.01) among the three wood wastes, and the bark was the richest in condensed tannins (4.2 ± 0.4%) compared to the sapwood (0.5 ± 0.1%) and heartwood (0.2 ± 0.2%). Liquid chromatography coupled mass spectroscopy (LC-MS) and Maldi-ToF analysis of the bark showed for the frst time that Okoume condensed tannins are fsetinidin, gallocatechin and trihydroxyfavan based monomers and complex polymers obtained with glycosylated units. No free catechin or robitinidin units were detected, whereas distinctive dihydroxy or trihydroxyfavan-3-benzoate dimers were observed in the investigated condensed tannin extracts. FTIR analysis showed the occurrence of glucan- and mannan-like sugars in the condensed tannins, and Maldi-ToF highlighted that these sugars should account for ten glycosylated units chemically bonded with two fsetinidins and one gallocatechin trimer. -
Plants for Tropical Subsistence Farms
SELECTING THE BEST PLANTS FOR THE TROPICAL SUBSISTENCE FARM By Dr. F. W. Martin. Published in parts, 1989 and 1994; Revised 1998 and 2007 by ECHO Staff Dedication: This document is dedicated to the memory of Scott Sherman who worked as ECHO's Assistant Director until his death in January 1996. He spent countless hours corresponding with hundreds of missionaries and national workers around the world, answering technical questions and helping them select new and useful plants to evaluate. Scott took special joy in this work because he Photo by ECHO Staff knew the God who had created these plants--to be a blessing to all the nations. WHAT’S INSIDE: TABLE OF CONTENTS HOW TO FIND THE BEST PLANTS… Plants for Feeding Animals Grasses DESCRIPTIONS OF USEFUL PLANTS Legumes Plants for Food Other Feed Plants Staple Food Crops Plants for Supplemental Human Needs Cereal and Non-Leguminous Grain Fibers Pulses (Leguminous Grains) Thatching/Weaving and Clothes Roots and Tubers Timber and Fuel Woods Vegetable Crops Plants for the Farm Itself Leguminous Vegetables Crops to Conserve or Improve the Soil Non-Leguminous Fruit Vegetables Nitrogen-Fixing Trees Leafy Vegetables Miners of Deep (in Soil) Minerals Miscellaneous Vegetables Manure Crops Fruits and Nut Crops Borders Against Erosion Basic Survival Fruits Mulch High Value Fruits Cover Crops Outstanding Nuts Crops to Modify the Climate Specialty Food Crops Windbreaks Sugar, Starch, and Oil Plants for Shade Beverages, Spices and Condiment Herbs Other Special-Purpose Plants Plants for Medicinal Purposes Living Fences Copyright © ECHO 2007. All rights reserved. This document may be reproduced for training purposes if Plants for Alley Cropping distributed free of charge or at cost and credit is given to ECHO. -
PLANT COMMUNITY FIELD GUIDE Introduction to Rainforest
PLANT COMMUNITY FIELD GUIDE Introduction to Rainforest Communities Table of Contents (click to go to page) HCCREMS Mapping ....................................................................... 3 Field Data Sheet ............................................................................. 4 Which of the following descriptions best describes your site? ................................................................ 5 Which plant community is it? .......................................................... 9 Rainforest communities of the Lower Hunter .................................. 11 Common Rainforest Species of the Lower Hunter ........................................................................ 14 A picture guide to common rainforest species of the Lower Hunter ........................................................... 17 Weeding of Rainforest Remnants ................................................... 25 Rainforest Regeneration near Black Jacks Point ............................ 27 Protection of Rainforest Remnants in the Lower Hunter & the Re-establishment of Diverse, Indigenous Plant Communities ... 28 Guidelines for a rainforest remnant planting program ..................... 31 Threatened Species ....................................................................... 36 References ..................................................................................... 43 Acknowledgements......................................................................... 43 Image Credits ................................................................................ -
Extreme Ecological Specialization in a Rainforest Mammal, the Bornean
bioRxiv preprint doi: https://doi.org/10.1101/2020.08.03.233999; this version posted August 3, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. 1 2 3 4 Extreme ecological specialization in a rainforest mammal, 5 the Bornean tufted ground squirrel, Rheithrosciurus macrotis 6 7 8 Andrew J. Marshall1*, Erik Meijaard2, and Mark Leighton3 9 10 1Department of Anthropology, Department of Ecology and Evolutionary Biology, Program in the 11 Environment, and School for Environment and Sustainability, 101 West Hall, 1085 S. University 12 Ave, Ann Arbor, Michigan, 48109 USA. 13 2Borneo Futures, Block C, Unit C8, Second Floor, Lot 51461, Kg Kota Batu, Mukim Kota Batu, 14 BA 2711, Brunei Darussalam. 15 3Harvard University, 11 Divinity Ave, Cambridge, MA, 02138, U.S.A. 16 17 * Corresponding author 18 E-mail: [email protected] (AJM) 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.08.03.233999; this version posted August 3, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. 19 Abstract 20 The endemic Bornean tufted ground squirrel, Rheithrosciurus macrotis, has attracted great 21 interest among biologists and the public recently. Nevertheless, we lack information on the most 22 basic aspects of its biology. -
Araceae), with P
bioRxiv preprint doi: https://doi.org/10.1101/2020.10.05.326850; this version posted October 7, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Taxonomic revision of the threatened African genus Pseudohydrosme Engl. (Araceae), with P. ebo, a new, Critically Endangered species from Ebo, Cameroon. Martin Cheek¹, Barthelemy Tchiengue2, Xander van der Burgt¹ ¹Science, Royal Botanic Gardens, Kew, Richmond, Surrey, U.K. 2 IRAD-Herbier National Camerounais, Yaoundé, BP 1601, Cameroon Corresponding author: Martin Cheek¹ Email address: [email protected] ABSTRACT This is the first revision in nearly 130 years of the African genus Pseudohydrosme, formerly considered endemic to Gabon. Sister to Anchomanes, Pseudohydrosme is distinct from Anchomanes because of its 2–3-locular ovary (not unilocular), peduncle concealed by cataphylls at anthesis and far shorter than the spathe (not exposed, far exceeding the spathe), stipitate fruits and viviparous (vegetatively apomictic) roots (not sessile, roots non-viviparous). Three species, one new to science, are recognised, in two sections. Although doubt has previously been cast on the value of recognising Pseudohydrosme buettneri, of Gabon, it is here accepted and maintained as a distinct species in the monotypic section, Zyganthera. However, it is considered to be probably globally extinct. Pseudohydrosme gabunensis, type species of the genus, also Gabonese, is maintained in Sect. Pseudohydrosme together with Pseudohydrosme ebo sp.nov. of the Ebo Forest, Littoral, Cameroon, the first addition to the genus since the nineteenth century, and which extends the range of the genus 450 km north from Gabon, into the Cross-Sanaga biogeographic area. -
Seed Germination and Genetic Structure of Two Salvia Species In
Seed germination and genetic structure of two Salvia species in response to environmental variables among phytogeographic regions in Jordan (Part I) and Phylogeny of the pan-tropical family Marantaceae (Part II). Dissertation Zur Erlangung des akademischen Grades Doctor rerum naturalium (Dr. rer. nat) Vorgelegt der Naturwissenschaftlichen Fakultät I Biowissenschaften der Martin-Luther-Universität Halle-Wittenberg Von Herrn Mohammad Mufleh Al-Gharaibeh Geb. am: 18.08.1979 in: Irbid-Jordan Gutachter/in 1. Prof. Dr. Isabell Hensen 2. Prof. Dr. Martin Roeser 3. Prof. Dr. Regina Classen-Bockhof Halle (Saale), den 10.01.2017 Copyright notice Chapters 2 to 4 have been either published in or submitted to international journals or are in preparation for publication. Copyrights are with the authors. Just the publishers and authors have the right for publishing and using the presented material. Therefore, reprint of the presented material requires the publishers’ and authors’ permissions. “Four years ago I started this project as a PhD project, but it turned out to be a long battle to achieve victory and dreams. This dissertation is the culmination of this long process, where the definition of “Weekend” has been deleted from my dictionary. It cannot express the long days spent in analyzing sequences and data, battling shoulder to shoulder with my ex- computer (RIP), R-studio, BioEdite and Microsoft Words, the joy for the synthesis, the hope for good results and the sadness and tiredness with each attempt to add more taxa and analyses.” “At the end, no phrase can describe my happiness when I saw the whole dissertation is printed out.” CONTENTS | 4 Table of Contents Summary .......................................................................................................................................... -
Food Hardness and Stone Tool Weight in Wild Primate Nut-Cracking
bioRxiv preprint doi: https://doi.org/10.1101/267542; this version posted February 19, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 1 Food hardness and stone tool weight in wild primate nut-cracking Michael Haslam1* 1School of Archaeology, University of Oxford, Oxford OX1 3QY, UK *Corresponding author email: [email protected] ORCID: 0000-0001-8234-7806 Abstract This study presents data on average stone tool weights and the hardness of foods processed by the three known stone-tool-using primate species: Burmese long-tailed macaques (Macaca fascicularis aurea), bearded capuchins (Sapajus libidinosus) and Western chimpanzees (Pan troglodytes verus). Each of these primates uses stone hammers to crack open nuts in the wild, making them suitable for inter-species behavioural comparison. This work draws on published results to identify a distinct difference in the tool weight/food hardness curve between chimpanzees and the two monkey taxa, with the latter reaching an asymptote in mean tool weight of just over 1 kg regardless of increasing food hardness. In contrast, chimpanzees rapidly increase their tool weight in response to increasing hardness, selecting average masses over 5 kg to process the hardest nuts. Species overlap in their preference for tools of 0.8-1 kg for opening foods of hardness 2-3 kN, suggesting that this conjunction may represent a primate stone-tool-use optimum. Keywords Stone tool; percussion; hammer; macaque; capuchin; chimpanzee bioRxiv preprint doi: https://doi.org/10.1101/267542; this version posted February 19, 2018. -
Late Quaternary Extinction of Ungulates in Sub-Saharan Africa: a Reductionist's Approach
Late Quaternary Extinction of Ungulates in Sub-Saharan Africa: a Reductionist's Approach Joris Peters Ins/itu/ für Palaeoanatomie, Domestikationsforschung und Geschichte der Tiermedizin, Universität München. Feldmochinger Strasse 7, D-80992 München, Germany AchilIes Gautier Laboratorium VDor Pa/eonlo/agie, Seclie Kwartairpaleo1ltologie en Archeozoölogie, Universiteit Gent, Krijgs/aon 2811S8, B-9000 Gent, Belgium James S. Brink National Museum, P. 0. Box 266. Bloemfontein 9300. Republic of South Africa Wim Haenen Instituut voor Gezandheidsecologie, Katholieke Universiteit Leuven, Capucijnenvoer 35, B-3000 Leuven, Belgium (Received 24 January 1992, revised manuscrip/ accepted 6 November 1992) Comparative osteomorphology and sta ti st ical analysis cf postcranial limb bone measurements cf modern African wildebeest (Collnochaetes), eland (Taura/ragus) and Africa n buffala (Sy" cer"s) have heen applied to reassess the systematic affiliations between these bovids and related extinct Pleistocene forms. The fossil sam pies come from the sites of Elandsfontein (Cape Province) .nd Flarisb.d (Orange Free State) in South Afrie • . On the basis of differenees in skull morphology and size of the appendicular skeleton between fossil and modern blaek wildebeest (ConlJochaeus gnou). the subspecies name anliquus, proposed earlier to designate the Pleistoeene form, ean be retained. The same taxonomie level is accepted for the large Pleistocene e1and, whieh could be named Taurolragus oryx antiquus. The long horned or giant buffa1o, Pelorovis antiquus, can be inc1uded in the polymorphous Syncerus caffer stock and could therefore be called Syncerus caffer antiquus. The ecology of Pleistocene and modern Connochaetes, Taurolragus and Syncerus is discussed. A relationship between herbivore body size and c1imate, as Bergmann's Rule predicts, could not be demonstrated. -
Novembre 2020
Novembre 2020 Abelmoschus esculentus Acacia auriculiformis Adansonia grandidieri Gombo - Ocra Acacia Baobab Lieu de récolte : Cameroun Lieu de récolte : Fruit rond Lieu de récolte : Madagascar Ile de la Réunion 14 € Le fruit Non disponible 0,10 € La valve Abelmoschus esculentus Acrocomia aculeata Adenanthera pavonina Gombo - Ocra Macauba Poids de l’or - Vakana Lieu de récolte : Cameroun Lieu de récolte : Bresil Fruit foncé Lieu de récolte : Madagascar 1,50 € Le fruit 3 € Le fruit 4,50 € Les 100 graines Abelmoschus esculentus Adansonia digitata Adenanthera pavonina Gombo - Ocra Baobab Poids de l’or - Vakana Lieu de récolte : Cameroun Fruit long Lieu de récolte : Madagascar Lieu de récolte : Madagascar Les douze graines 3 € Le fruit 2 € 2 € Le fruit Abrus precatorius Adansonia digitata Afrostyrax lepidophyllus Voamaintilany Lieu de récolte : Madagascar Baobab Ail de Brousse Vente réservée aux musées Lieu de récolte : Madagascar Conditions particulières, Lieu de récolte : Cameroun voir en page 23. 14 € Le fruit 1 € Les 5 graines 3 € Les 35 graines Abrus precatorius Adansonia grandidieri Afzelia africana Voamaintilany Baobab Doussié rouge Lieu de récolte : Madagascar Vente réservée aux musées Lieu de récolte : Madagascar Lieu de récolte : Cameroun Conditions particulières, Les huit graines 15 € Le fruit fermé voir en page 23. 2 € 12 € La grappe 55 € Le fruit ouvert Aleurites moluccana Aspidosperma macrocarpon Barringtonia asiatica Noix de Bancoule Peroba-cetim Fotabé Lieu de récolte : Madagascar Lieu de récolte : Bresil Lieu de récolte : Madagascar