Potential Natural Vegetation of Eastern Africa (Ethiopia, Kenya, Malawi, Rwanda, Tanzania, Uganda and Zambia)
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Harvesting Impacts on Commonly Used Medicinal Tree Species (Catha
botha.qxd 2004/10/05 09:53 Page 1 Harvesting impacts on commonly used medicinal tree species (Catha edulis and Rapanea melanophloeos) under different land management regimes in the Mpumalanga Lowveld, South Africa J. BOTHA, E.T.F. WITKOWSKI and C.M. SHACKLETON Botha, J., E.T.F. Witkowski and C.M. Shackleton. 2004. Harvesting impacts on com- monly used medicinal tree species (Catha edulis and Rapanea melanophloeos) under different land management regimes in the Mpumalanga Lowveld, South Africa. Koedoe 47(2): 1–18. Pretoria. ISSN 0075-6458. Harvesting of products from plants in the wild is widespread throughout southern Africa. Particularly important products are plant parts used in traditional medicine. However, the impacts of harvesting practices are rarely quantified, with as yet insuffi- cient generic rules across species and life forms. This limits the predictive ability to monitor and manage the affected populations. This paper examines the harvesting impact on two popular woody medicinal species used throughout sub-Saharan Africa, namely Catha edulis (Vahl) Forssk. ex Endl. (bushman’s tea) and Rapanea melanophloeos (L.) Mez. (Cape beech). In both species, basal diameters, heights, and the number of size classes in the harvest- ed populations were lower than in unharvested. Densities of harvested populations were higher in both species, including densities of young plants, but the frequency of indi- viduals in larger size classes was lower. The populations of both species being harvest- ed for medicinal products appeared to be withstanding the current levels of harvesting, but the population structure of C. edulis populations being harvested for poles on the roadside and near human settlements had been substantially altered. -
Vascular Plant Survey of Vwaza Marsh Wildlife Reserve, Malawi
YIKA-VWAZA TRUST RESEARCH STUDY REPORT N (2017/18) Vascular Plant Survey of Vwaza Marsh Wildlife Reserve, Malawi By Sopani Sichinga ([email protected]) September , 2019 ABSTRACT In 2018 – 19, a survey on vascular plants was conducted in Vwaza Marsh Wildlife Reserve. The reserve is located in the north-western Malawi, covering an area of about 986 km2. Based on this survey, a total of 461 species from 76 families were recorded (i.e. 454 Angiosperms and 7 Pteridophyta). Of the total species recorded, 19 are exotics (of which 4 are reported to be invasive) while 1 species is considered threatened. The most dominant families were Fabaceae (80 species representing 17. 4%), Poaceae (53 species representing 11.5%), Rubiaceae (27 species representing 5.9 %), and Euphorbiaceae (24 species representing 5.2%). The annotated checklist includes scientific names, habit, habitat types and IUCN Red List status and is presented in section 5. i ACKNOLEDGEMENTS First and foremost, let me thank the Nyika–Vwaza Trust (UK) for funding this work. Without their financial support, this work would have not been materialized. The Department of National Parks and Wildlife (DNPW) Malawi through its Regional Office (N) is also thanked for the logistical support and accommodation throughout the entire study. Special thanks are due to my supervisor - Mr. George Zwide Nxumayo for his invaluable guidance. Mr. Thom McShane should also be thanked in a special way for sharing me some information, and sending me some documents about Vwaza which have contributed a lot to the success of this work. I extend my sincere thanks to the Vwaza Research Unit team for their assistance, especially during the field work. -
Impacts of Global Climate Change on the Phenology of African Tropical Ecosystems
IMPACTS OF GLOBAL CLIMATE CHANGE ON THE PHENOLOGY OF AFRICAN TROPICAL ECOSYSTEMS GABRIELA S. ADAMESCU MSc by Research UNIVERSITY OF YORK Biology October 2016 1 Abstract The climate has been changing at an unprecedented rate, affecting natural systems around the globe. Its impact has been mostly reflected through changes in species’ phenology, which has received extensive attention in the current global-change research, mainly in temperate regions. However, little is known about phenology in African tropical forests. Africa is known to be vulnerable to climate change and filling the gaps is an urgent matter. In this study we assess plant phenology at the individual, site and continental level. We first compare flowering and fruiting events of species shared between multiple sites, accounting for three quantitative indicators, such as frequency, fidelity for conserving a certain frequency and seasonal phase. We complement this analysis by assessing interannual trends of flowering and fruiting frequency and fidelity to their dominant frequency at 11 sites. We complete the bigger picture by analysing flowering and fruiting frequency of African tropical trees at the site and community level. Next, we correlate three climatic indices (ENSO, IOD and NAO) with flowering and fruiting events at the canopy level, at 16 sites. Our results suggest that 30 % of the studied species show plasticity or adaptability to different environments and will most likely be resilient to moderate future climate change. At both site and continental level, we found that annual flowering cycles are dominant, indicating strong seasonality in the case of more than 50% of African tropical species under investigation. -
The Ecology of the African Buffalo in the Eastern Kalahari Region, South Africa
University of Pretoria etd – Cromhout, M (2007) The ecology of the African buffalo in the eastern Kalahari region, South Africa by Marzanne Cromhout Submitted in partial fulfillment of the requirements for the degree MAGISTER SCIENTIAE (WILDLIFE MANAGEMENT) in the Centre for Wildlife Management Department of Animal and Wildlife Sciences Faculty of Natural and Agricultural Sciences University of Pretoria Pretoria Supervisor: Prof. J. du P. Bothma Co-supervisor: Prof. M.W. van Rooyen March 2006 University of Pretoria etd – Cromhout, M (2007) The ecology of the African buffalo in the eastern Kalahari region, South Africa by Marzanne Cromhout Supervisor: Prof. J. du P. Bothma Co-supervisor: Prof. M.W. van Rooyen in the Centre for Wildlife Management Department of Animal and Wildlife Sciences Faculty of Natural and Agricultural Sciences University of Pretoria Pretoria MAGISTER SCIENTIAE (WILDLIFE MANAGEMENT) ABSTRACT This study was conducted on Tswalu Kalahari Reserve in the eastern Kalahari region of South Africa. The long-term sustainability of the valued African or Cape buffalo Syncerus caffer caffer was investigated in an area that falls outside their permanent historical distribution. The habitat utilisation of the buffalo population and their range use patterns were investigated. Seasonal differences were apparent in habitat utilisation and were guided by nutritional needs and climatic variables. Range use patterns revealed an increase in range size during the cold, dry season. The buffalo density on Tswalu was the lowest recorded in the literature to date with 0.15 buffalo/km². The animals showed seasonal changes in their feeding preferences with occasional browsing. During the cold, dry season the population was under severe nutritional stress. -
University of California Santa Cruz Responding to An
UNIVERSITY OF CALIFORNIA SANTA CRUZ RESPONDING TO AN EMERGENT PLANT PEST-PATHOGEN COMPLEX ACROSS SOCIAL-ECOLOGICAL SCALES A dissertation submitted in partial satisfaction of the requirements for the degree of DOCTOR OF PHILOSOPHY in ENVIRONMENTAL STUDIES with an emphasis in ECOLOGY AND EVOLUTIONARY BIOLOGY by Shannon Colleen Lynch December 2020 The Dissertation of Shannon Colleen Lynch is approved: Professor Gregory S. Gilbert, chair Professor Stacy M. Philpott Professor Andrew Szasz Professor Ingrid M. Parker Quentin Williams Acting Vice Provost and Dean of Graduate Studies Copyright © by Shannon Colleen Lynch 2020 TABLE OF CONTENTS List of Tables iv List of Figures vii Abstract x Dedication xiii Acknowledgements xiv Chapter 1 – Introduction 1 References 10 Chapter 2 – Host Evolutionary Relationships Explain 12 Tree Mortality Caused by a Generalist Pest– Pathogen Complex References 38 Chapter 3 – Microbiome Variation Across a 66 Phylogeographic Range of Tree Hosts Affected by an Emergent Pest–Pathogen Complex References 110 Chapter 4 – On Collaborative Governance: Building Consensus on 180 Priorities to Manage Invasive Species Through Collective Action References 243 iii LIST OF TABLES Chapter 2 Table I Insect vectors and corresponding fungal pathogens causing 47 Fusarium dieback on tree hosts in California, Israel, and South Africa. Table II Phylogenetic signal for each host type measured by D statistic. 48 Table SI Native range and infested distribution of tree and shrub FD- 49 ISHB host species. Chapter 3 Table I Study site attributes. 124 Table II Mean and median richness of microbiota in wood samples 128 collected from FD-ISHB host trees. Table III Fungal endophyte-Fusarium in vitro interaction outcomes. -
Doctorat De L'université De Toulouse
En vue de l’obt ention du DOCTORAT DE L’UNIVERSITÉ DE TOULOUSE Délivré par : Université Toulouse 3 Paul Sabatier (UT3 Paul Sabatier) Discipline ou spécialité : Ecologie, Biodiversité et Evolution Présentée et soutenue par : Joeri STRIJK le : 12 / 02 / 2010 Titre : Species diversification and differentiation in the Madagascar and Indian Ocean Islands Biodiversity Hotspot JURY Jérôme CHAVE, Directeur de Recherches CNRS Toulouse Emmanuel DOUZERY, Professeur à l'Université de Montpellier II Porter LOWRY II, Curator Missouri Botanical Garden Frédéric MEDAIL, Professeur à l'Université Paul Cezanne Aix-Marseille Christophe THEBAUD, Professeur à l'Université Paul Sabatier Ecole doctorale : Sciences Ecologiques, Vétérinaires, Agronomiques et Bioingénieries (SEVAB) Unité de recherche : UMR 5174 CNRS-UPS Evolution & Diversité Biologique Directeur(s) de Thèse : Christophe THEBAUD Rapporteurs : Emmanuel DOUZERY, Professeur à l'Université de Montpellier II Porter LOWRY II, Curator Missouri Botanical Garden Contents. CONTENTS CHAPTER 1. General Introduction 2 PART I: ASTERACEAE CHAPTER 2. Multiple evolutionary radiations and phenotypic convergence in polyphyletic Indian Ocean Daisy Trees (Psiadia, Asteraceae) (in preparation for BMC Evolutionary Biology) 14 CHAPTER 3. Taxonomic rearrangements within Indian Ocean Daisy Trees (Psiadia, Asteraceae) and the resurrection of Frappieria (in preparation for Taxon) 34 PART II: MYRSINACEAE CHAPTER 4. Phylogenetics of the Mascarene endemic genus Badula relative to its Madagascan ally Oncostemum (Myrsinaceae) (accepted in Botanical Journal of the Linnean Society) 43 CHAPTER 5. Timing and tempo of evolutionary diversification in Myrsinaceae: Badula and Oncostemum in the Indian Ocean Island Biodiversity Hotspot (in preparation for BMC Evolutionary Biology) 54 PART III: MONIMIACEAE CHAPTER 6. Biogeography of the Monimiaceae (Laurales): a role for East Gondwana and long distance dispersal, but not West Gondwana (accepted in Journal of Biogeography) 72 CHAPTER 7 General Discussion 86 REFERENCES 91 i Contents. -
NIGERIA National Forest (Carbon) Inventory
NIGERIA National Forest (Carbon) Inventory WITH TECHNICAL SUPPORT OF: Cover Illustration: ©Lorenzo Catena NIGERIA National Forest (Carbon) Inventory FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Abuja, 2020 REQUIRED CITATION FAO. 2020. Nigeria - National forest (carbon) inventory. Abuja. https://doi.org/10.4060/cb1328en The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO) concerning the legal or development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The mention of specific companies or products of manufacturers, whether or not these have been patented, does not imply that these have been endorsed or recommended by FAO in preference to others of a similar nature that are not mentioned. The views expressed in this information product are those of the author(s) and do not necessarily reflect the views or policies of FAO. ISBN 978-92-5-133393-8 ©FAO, 2020 Some rights reserved. This work is made available under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 IGO licence (CC BY-NC-SA 3.0 IGO; https://creativecommons.org/licenses/by-nc-sa/3.0/igo/legalcode). Under the terms of this licence, this work may be copied, redistributed and adapted for non-commercial purposes, provided that the work is appropriately cited. In any use of this work, there should be no suggestion that FAO endorses any specific organization, products or services. The use of the FAO logo is not permitted. -
Assessment of Prunus Africana Bark Exploitation Methods and Sustainable Exploitation in the South West, North-West and Adamaoua Regions of Cameroon
GCP/RAF/408/EC « MOBILISATION ET RENFORCEMENT DES CAPACITES DES PETITES ET MOYENNES ENTREPRISES IMPLIQUEES DANS LES FILIERES DES PRODUITS FORESTIERS NON LIGNEUX EN AFRIQUE CENTRALE » Assessment of Prunus africana bark exploitation methods and sustainable exploitation in the South west, North-West and Adamaoua regions of Cameroon CIFOR Philip Fonju Nkeng, Verina Ingram, Abdon Awono February 2010 Avec l‟appui financier de la Commission Européenne Contents Acknowledgements .................................................................................................... i ABBREVIATIONS ...................................................................................................... ii Abstract .................................................................................................................. iii 1: INTRODUCTION ................................................................................................... 1 1.1 Background ................................................................................................. 1 1.2 Problem statement ...................................................................................... 2 1.3 Research questions .......................................................................................... 2 1.4 Objectives ....................................................................................................... 3 1.5 Importance of the study ................................................................................... 3 2: Literature Review ................................................................................................. -
Avian Fruit Ingestion Differentially Facilitates Seed Germination of Four Fleshy-Fruited Plant Species of an Afrotropical Forest
Plant Ecology and Evolution 144 (1): 96–100, 2011 doi:10.5091/plecevo.2011.503 SHORT COMMUNICATION Avian fruit ingestion differentially facilitates seed germination of four fleshy-fruited plant species of an Afrotropical forest Valérie Lehouck1,2,*, Toon Spanhove1,2,3 & Luc Lens1 1Terrestrial Ecology Unit, Ghent University, K.L. Ledeganckstraat 35, BE-9000 Ghent, Belgium 2Ornithology Section, Zoology Department, National Museums of Kenya, P.O. Box 40658, 00100, Nairobi, Kenya 3Institute for Nature and Forest (INBO), Kliniekstraat 25, BE-1070 Brussels, Belgium *Author for correspondence: [email protected] Background and aims – The effects of gut treatment on the germination of animal-dispersed seeds are critical for the recruitment of many fleshy-fruited plant species, and hence for forest dynamics. However, these effects remain poorly studied especially in African plant species. In this paper, we aim to investigate the effects of gut treatment on the germination capacity and mean germination time of four common plant species of an Afrotropical cloud forest. Methods – We fed Xymalos monospora fruits to its three main avian dispersers to investigate different responses among frugivore species. Next, fruits of four plant species were fed to the most dominant avian disperser, Andropadus milanjensis, to compare responses among plant species. Germination capacity and mean germination time were compared among gut-passed seeds, manually depulped seeds and intact fruits. Key results – Germination of Xymalos monospora seeds was up to nine times more likely and almost twice as fast after bird ingestion compared to intact fruits. An increase in germination capacity, but not in mean germination time, was also detected in four sympatric plant species after ingestion by Andropadus milanjensis. -
Effect of Heat Treatment on Antioxidant and Antimicrobial Activity of Croton Gratissimus and Xylopiaaethiopica Spices
مجلة العلوم الزراعية Journal of Agricultural, Environmental والبيئية والبيطرية and Veterinary Sciences املجلد )4(، العدد )1(: 30 مارس 2020م Volume (4), Issue (1): 30 Mar 2020 ص: P: 84 - 93 ISSN: 2522-3364 93 - 84 Effect of Heat Treatment on Antioxidant and Antimicrobial Activity of Croton gratissimus and Xylopiaaethiopica Spices Afraa Awadallah Ahamed Yassir Salah Ibrahim Adam Amna Mokhtar Hussien Faculty of agricultural Technology & fish science || Alneelain University || Sudan Mohammed Elamin Hassan Sudan Academy of Banking and Financial Sciences || Sudan Abstract: Background and objective Croton gratissimus and Xylopiaaethiopicaare tropical African shrubs or small tree with corky bark. It is traditionally used as a febrifuge, styptic, cathartic and is medic for dropsy. This study was designed to determine antioxidant, antimicrobial and toxicity of local spices Crotongratissimus (A), Xylopiaaethiopica (B) and measure effect of heat process on their characteristics of antioxidant, antimicrobial activity, and toxicity. Materials and methods Samples were purchased from JubelAulia and Klakla Al Lafa Markets, Sudan and prepared samples for analysis in three replicates. All samples were extracted by ethanol (80%) A Crotongratissimus and B Xylopiaaethiopica and extract treated by heat treatment (80°C) C Crotongratissimus and D Xylopiaaethiopica. Antioxidant activity was determined by using (DPPH) detector. Results: There were found the extracts with and without heat treatment (A, B, C and D) were grading from highest to lowest, respectively. Antimicrobial activity of (Croton gratissimus, Xylopiaaethiopica) extracts were determined against Bacillssubtilis, Staphylococcus aureus, Escherichia coli, Pseudomonasaeruginosa, and Candida albicans. Toxicity of extracts (Croton gratissimus, Xylopiaaethiopica) was determined for edible matter by using (MTT) assay method, and there were no toxic in both of them. -
Le Genre Entandrophragma (Meliaceae)
B A S E Biotechnol. Agron. Soc. Environ. 2018 22(2) Le Point sur : Le genre Entandrophragma (Meliaceae) : taxonomie et écologie d’arbres africains d’intérêt économique (synthèse bibliographique) Emmanuel Kasongo Yakusu (1, 2, 3), Franck S. Monthe (4), Nils Bourland (3, 5, 6), Olivier J. Hardy (4), Dominique Louppe (7), Félicien Bola Mbele Lokanda (8), Wannes Hubau (3), Jean-Marie Kahindo Muhongya (8), Jan Van Den Bulcke (2), Joris Van Acker (2), Hans Beeckman (3) (1) Université de Kisangani. Faculté de Gestion des Ressources Naturelles Renouvelables. B.P. 2012. Avenue Kitima, 3. Kisangani (République Démocratique du Congo). E-mail : [email protected] (2) Université de Gand. Laboratoire de Technologie du Bois. Coupure Links, 653. BE-9000 Gand (Belgique). (3) Musée Royal de l’Afrique Centrale. Service de Biologie du Bois. Leuvensesteenweg, 13. BE-3080 Tervuren (Belgique). (4) Université libre de Bruxelles. Faculté des Sciences. Évolution biologique et Écologie. CP 160/12. Avenue F. D. Roosevelt, 50. BE-1050 Bruxelles (Belgique). (5) Centre de Recherche Forestière Internationale. Situ Gede Bogor Barat 16115 (Indonésie). (6) Resources and Synergies Development. Noliktavu iela, 7. Dreilini, Stopinu novads. Riga 2130 (Lettonie). (7) Centre de coopération Internationale en Recherche Agronomique pour le Développement (Cirad). Département forestier. Campus international de Baillarguet. TA 10/C 34398. FR-Montpellier Cedex 5 (France). (8) Université de Kisangani. Faculté des Sciences. B.P. 2012. Avenue Kitima, 3. Kisangani (République Démocratique du Congo). Reçu le 28 juin 2017, accepté le 23 janvier 2018, mis en ligne le 6 mars 2018. Cet article est distribué suivant les termes et les conditions de la licence CC-BY (http://creativecommons.org/licenses/by/4.0/ deed.fr) Introduction. -
Spatial and Matrix Influences on the Biogeography of Insect Taxa in Forest Fragments in Central Uganda
Spatial and matrix influences on the biogeography of insect taxa in forest fragments in central Uganda Perpetra Akite Dissertation for a cotutelle award of Doctor of Philosophy Degree of Makerere University, Uganda and University of Bergen, Norway Makerere University University of Bergen 2016 Department of Biological Sciences, Makerere University Department of Biology, University of Bergen ii DECLARATION OF ORIGINALITY This is my own work and it has never been submitted for any degree award in any University iii TABLE OF CONTENTS DECLARATION OF ORIGINALITY......................................................................................iii LIST OF CONTENTS...............................................................................................................iv ACKNOWLEDGEMENTS.......................................................................................................vi LIST OF PAPERS....................................................................................................................vii Declaration of authors’ contributions…………………….…...……………...……...viii ABSTRACT...............................................................................................................................x BACKGROUND........................................................................................................................1 Problem statement..........................................................................................................……….2 Objectives........................................................................................................................3