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Meso-Archaean and Palaeo-Proterozoic Sedimentary Sequence Stratigraphy of the Kaapvaal Craton
Marine and Petroleum Geology 33 (2012) 92e116 Contents lists available at SciVerse ScienceDirect Marine and Petroleum Geology journal homepage: www.elsevier.com/locate/marpetgeo Meso-Archaean and Palaeo-Proterozoic sedimentary sequence stratigraphy of the Kaapvaal Craton Adam J. Bumby a,*, Patrick G. Eriksson a, Octavian Catuneanu b, David R. Nelson c, Martin J. Rigby a,1 a Department of Geology, University of Pretoria, Pretoria 0002, South Africa b Department of Earth and Atmospheric Sciences, University of Alberta, Canada c SIMS Laboratory, School of Natural Sciences, University of Western Sydney, Hawkesbury Campus, Richmond, NSW 2753, Australia article info abstract Article history: The Kaapvaal Craton hosts a number of Precambrian sedimentary successions which were deposited Received 31 August 2010 between 3105 Ma (Dominion Group) and 1700 Ma (Waterberg Group) Although younger Precambrian Received in revised form sedimentary sequences outcrop within southern Africa, they are restricted either to the margins of the 27 September 2011 Kaapvaal Craton, or are underlain by orogenic belts off the edge of the craton. The basins considered in Accepted 30 September 2011 this work are those which host the Witwatersrand and Pongola, Ventersdorp, Transvaal and Waterberg Available online 8 October 2011 strata. Many of these basins can be considered to have formed as a response to reactivation along lineaments, which had initially formed by accretion processes during the amalgamation of the craton Keywords: Kaapvaal during the Mid-Archaean. Faulting along these lineaments controlled sedimentation either directly by Witwatersrand controlling the basin margins, or indirectly by controlling the sediment source areas. Other basins are Ventersdorp likely to be more controlled by thermal affects associated with mantle plumes. -
The Geology of the Olifants River Area, Transvaal
REPUBLIC OF SOUTH AFRICA REPUBLIEK VANSUID-AFRIKA· DEPARTMENT OF MINES DEPARTEMENT VAN MYNWESE GEOLOGICAL SURVEY GEOLOGIESE OPNAME THE GEOLOGY OF THE OLIFANTS RIVER AREA, TRANSVAAL AN EXPLANATION OF SHEETS 2429B (CHUNIESPOORT) AND 2430A (WOLKBERG) by J. S. I. Sehwellnus, D.Se., L. N. J. Engelbrecht, B.Sc., F. J. Coertze, B.Sc. (Hons.), H. D. Russell, B.Sc., S. J. Malherbe, B.Sc. (Hons.), D. P. van Rooyen, B.Sc., and R. Cooke, B.Sc. Met 'n opsomming in Afrikaans onder die opskrif: DIE GEOLOGIE VAN DIE GEBIED OLIFANTSRIVIER, TRANSVAAL COPYRIGHT RESERVED/KOPIEREG VOORBEHOU (1962) Printed by and obtainable (rom Gedruk deur en verkrygbaar the Government Printer, B(ls~ van die Staatsdrukker, Bosman man Street, Pretoria. straat, Pretoria. Geological map in colour on a Geologiese kaart in kleur op 'n scale of I: 125,000 obtainable skaal van I: 125.000 apart ver separately at the price of 60c. krygbaar teen die prys van 60c. & .r.::-~ h'd'~, '!!~l p,'-' r\ f: ~ . ~) t,~ i"'-, i CONTENTS PAGE ABSTRACT ........................ ' ••• no ..........' ........" ... • • • • • • • • •• 1 I. INTRODUCTION........ •.••••••••.••••••••.....••...•.•..••••..• 3 II. PHYSIOGRAPHY................................................ 4 A. ToPOGRAPHY..... • • . • • . • . • • . • • • . • • . • . • • • • • . • • • • • . • • • • • • ... 4 B. DRAINAGE.................................................... 6 C. CLIMATE ..........•.••••.•••••.••....................... ,.... 7 D. VEGETATION .••••.•••••.•.........•..... , ..............•... , . 7 III. GEOLOGICAL FORMATIONS .................... -
Sequence Stratigraphic Development of the Neoarchean Transvaal Carbonate Platform, Kaapvaal Craton, South Africa Dawn Y
DAWN Y. SUMNER AND NICOLAS J. BEUKES 11 Sequence Stratigraphic Development of the Neoarchean Transvaal carbonate platform, Kaapvaal Craton, South Africa Dawn Y. Sumner Department of Geology, University of California 1 Shields Ave, Davis, CA 95616 USA e-mail: [email protected] Nicolas J. Beukes Department of Geology, University of Johannesburg P.O. Box 524, Auckland Park, 2000 South Africa e-mail: [email protected] © 2006 March Geological Society of South Africa ABSTRACT The ~2.67 to ~2.46 Ga lower Transvaal Supergroup, South Africa, consists of a mixed siliciclastic-carbonate ramp that grades upward into an extensive carbonate platform, overlain by deep subtidal banded iron-formation. It is composed of 14 third-order sequences that develop from a mixed siliciclastic-carbonate ramp to a steepened margin followed by a rimmed margin that separated lagoonal environments from the open ocean. Drowning of the platform coincided with deposition of banded iron-formation across the Kaapvaal Craton. The geometry and stacking of these sequences are consistent with more recent patterns of carbonate accumulation, demonstrating that Neoarchean carbonate accumulation responded to subsidence, sea level change, and carbonate production similarly to Proterozoic and Phanerozoic platforms. The similarity of carbonate platform geometry through time, even with significant changes in dominant biota, demonstrates that rimmed margins are localized primarily by physiochemical conditions rather than growth dynamics of specific organisms. Stratigraphic patterns during deposition of the Schmidtsdrift and Campbellrand-Malmani subgroups are most consistent with variable thinning of the Kaapvaal Craton during extrusion of the ~2.7 Ga Ventersdorp lavas. Although depositional patterns are consistent with rifting of the western margin of the Kaapvaal Craton during this time, a rift-to-drift transition is not required to explain subsidence. -
Article ISSN 1179-3163 (Online Edition)
Phytotaxa 408 (1): 069–076 ISSN 1179-3155 (print edition) https://www.mapress.com/j/pt/ PHYTOTAXA Copyright © 2019 Magnolia Press Article ISSN 1179-3163 (online edition) https://doi.org/10.11646/phytotaxa.408.1.5 Gymnosporia sekhukhuniensis (Celastraceae), a new species from South Africa MARIE JORDAAN1,2 & ABRAHAM E. VAN WYK1,2* 1National Herbarium, South African National Biodiversity Institute, Private Bag X101, Pretoria, 0001 South Africa. 2H.G.W.J. Schweickerdt Herbarium, Department of Plant and Soil Sciences, University of Pretoria, Pretoria, 0002 South Africa. *Author for correspondence. E-mail: [email protected] Abstract Gymnosporia sekhukhuniensis, a new species from north-eastern South Africa, is described, illustrated, mapped, and compared with closely related species. It belongs to Gymnosporia sect. Buxifoliae, more specifically Group 1, the members of which are characterized by the capsules being (2)3(4)-valved, rugose or verrucose, and the seeds partially covered by the aril. The new species has a restricted distribution range and is near-endemic to the Sekhukhuneland Centre of Endemism. This biogeographical region rich in restricted-range plants is more or less congruent with surface outcrops of mafic and ultramafic igneous rocks belonging to the Rustenburg Layered Suite of the eastern Bushveld Complex. The range of the new species shows marginal intrusion into the far northern part of the nearby Wolkberg Centre of Endemism, where it is associated with dolomites of the Malmani Subgroup. Gymnosporia sekhukhuniensis is a suffrutex mainly associated with rocky outcrops in open savannah. Diagnostic characters include its dwarf habit (up to 1.6 m tall), capsules that are relatively small (5–8 mm long), woody, scaly-rugose, with hard pointed apices, and leaves that are very laxly arranged on the stems, with some often present on the thorns. -
Private Governance of Protected Areas in Africa: Case Studies, Lessons Learnt and Conditions of Success
Program on African Protected Areas & Conservation (PAPACO) PAPACO study 19 Private governance of protected areas in Africa: case studies, lessons learnt and conditions of success @B. Chataigner Sue Stolton and Nigel Dudley Equilibrium Research & IIED Equilibrium Research offers practical solutions to conservation challenges, from concept, to implementation, to evaluation of impact. With partners ranging from local communities to UN agencies across the world, we explore and develop approaches to natural resource management that balance the needs of nature and people. We see biodiversity conservation as an ethical necessity, which can also support human wellbeing. We run our own portfolio of projects and offer personalised consultancy. Prepared for: IIED under contract to IUCN EARO Reproduction: This publication may be reproduced for educational or non-profit purposes without special permission, provided acknowledgement to the source is made. No use of this publication may be made for resale or any other commercial purpose without permission in writing from Equilibrium Research. Citation: Stolton, S and N Dudley (2015). Private governance of protected areas in Africa: Cases studies, lessons learnt and conditions of success. Bristol, UK, Equilibrium Research and London, UK, IIED Cover: Private conservancies in Namibia and Kenya © Equilibrium Research Contact: Equilibrium Research, 47 The Quays Cumberland Road, Spike Island Bristol, BS1 6UQ, UK Telephone: +44 [0]117-925-5393 www.equilibriumconsultants.com Page | 2 Contents 1. Executive summary -
Know Your National Parks
KNOW YOUR NATIONAL PARKS 1 KNOW YOUR NATIONAL PARKS KNOW YOUR NATIONAL PARKS Our Parks, Our Heritage Table of contents Minister’s Foreword 4 CEO’s Foreword 5 Northern Region 8 Marakele National Park 8 Golden Gate Highlands National Park 10 Mapungubwe National Park and World Heritage site 11 Arid Region 12 Augrabies Falls National Park 12 Kgalagadi Transfrontier Park 13 Mokala National Park 14 Namaqua National Park 15 /Ai/Ais-Richtersveld Transfrontier Park 16 Cape Region 18 Table Mountain National Park 18 Bontebok National Park 19 Agulhas National Park 20 West Coast National Park 21 Tankwa-Karoo National Park 22 Frontier Region 23 Addo Elephant National Park 23 Karoo National Park 24 DID YOU Camdeboo National Park 25 KNOW? Mountain Zebra National Park 26 Marakele National Park is Garden Route National Park 27 found in the heart of Waterberg Mountains.The name Marakele Kruger National Park 28 is a Tswana name, which Vision means a ‘place of sanctuary’. A sustainable National Park System connecting society Fun and games 29 About SA National Parks Week 31 Mission To develop, expand, manage and promote a system of sustainable national parks that represent biodiversity and heritage assets, through innovation and best practice for the just and equitable benefit of current and future generation. 2 3 KNOW YOUR NATIONAL PARKS KNOW YOUR NATIONAL PARKS Minister’s Foreword CEO’s Foreword We are blessed to live in a country like ours, which has areas by all should be encouraged through a variety of The staging of SA National Parks Week first took place been hailed as a miracle in respect of our transition to a programmes. -
The Ecology of Large Herbivores Native to the Coastal Lowlands of the Fynbos Biome in the Western Cape, South Africa
The ecology of large herbivores native to the coastal lowlands of the Fynbos Biome in the Western Cape, South Africa by Frans Gustav Theodor Radloff Dissertation presented for the degree of Doctor of Science (Botany) at Stellenbosh University Promoter: Prof. L. Mucina Co-Promoter: Prof. W. J. Bond December 2008 DECLARATION By submitting this dissertation electronically, I declare that the entirety of the work contained therein is my own, original work, that I am the owner of the copyright thereof (unless to the extent explicitly otherwise stated) and that I have not previously in its entirety or in part submitted it for obtaining any qualification. Date: 24 November 2008 Copyright © 2008 Stellenbosch University All rights reserved ii ABSTRACT The south-western Cape is a unique region of southern Africa with regards to generally low soil nutrient status, winter rainfall and unusually species-rich temperate vegetation. This region supported a diverse large herbivore (> 20 kg) assemblage at the time of permanent European settlement (1652). The lowlands to the west and east of the Kogelberg supported populations of African elephant, black rhino, hippopotamus, eland, Cape mountain and plain zebra, ostrich, red hartebeest, and grey rhebuck. The eastern lowlands also supported three additional ruminant grazer species - the African buffalo, bontebok, and blue antelope. The fate of these herbivores changed rapidly after European settlement. Today the few remaining species are restricted to a few reserves scattered across the lowlands. This is, however, changing with a rapid growth in the wildlife industry that is accompanied by the reintroduction of wild animals into endangered and fragmented lowland areas. -
A New Species of Disa (Orchidaceae) from Mpumalanga, South Africa ⁎ D
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector South African Journal of Botany 72 (2006) 551–554 www.elsevier.com/locate/sajb A new species of Disa (Orchidaceae) from Mpumalanga, South Africa ⁎ D. McMurtry a, , T.J. Edwards b, B. Bytebier c a Whyte Thorne, P O Box 218, Carino 1204, South Africa b School of Biological and Conservation Sciences, University of KwaZulu–Natal Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa c Biochemistry Department, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa Received 10 November 2005; accepted 8 March 2006 Abstract A new species, Disa vigilans D. McMurtry and T.J. Edwards, is described from the Mpumalanga Escarpment. The species is a member of the Disa Section Stenocarpa Lindl. Its alliances are discussed in terms of its morphology and its phylogenetic placement is elucidated using molecular data. D. vigilans has previously been considered as an anomalous form of Disa montana Sond. but is more closely allied to Disa amoena H.P. Linder. © 2006 SAAB. Published by Elsevier B.V. All rights reserved. Keywords: Disa; Draensberg endemic; New species; Orchidaceae; Section Stenocarpae; South Africa; Mpumalanga province 1. Introduction with 3 main veins, margins thickened and translucent. Inflorescence lax, cylindrical, 40–75 mm long; bracts light green suffused pinkish Disa is the largest genus of Orchidaceae in southern Africa (162 with darker green veins, linear-lanceolate, acuminate, 11–29×2– spp.) and has been the focus of considerable taxonomic investigation 3 mm, scarious at anthesis. Flowers white suffused with carmine- (Linder, 1981a,b, 1986; Linder and Kurzweil, 1994). -
Biodiversity in Sub-Saharan Africa and Its Islands Conservation, Management and Sustainable Use
Biodiversity in Sub-Saharan Africa and its Islands Conservation, Management and Sustainable Use Occasional Papers of the IUCN Species Survival Commission No. 6 IUCN - The World Conservation Union IUCN Species Survival Commission Role of the SSC The Species Survival Commission (SSC) is IUCN's primary source of the 4. To provide advice, information, and expertise to the Secretariat of the scientific and technical information required for the maintenance of biologi- Convention on International Trade in Endangered Species of Wild Fauna cal diversity through the conservation of endangered and vulnerable species and Flora (CITES) and other international agreements affecting conser- of fauna and flora, whilst recommending and promoting measures for their vation of species or biological diversity. conservation, and for the management of other species of conservation con- cern. Its objective is to mobilize action to prevent the extinction of species, 5. To carry out specific tasks on behalf of the Union, including: sub-species and discrete populations of fauna and flora, thereby not only maintaining biological diversity but improving the status of endangered and • coordination of a programme of activities for the conservation of bio- vulnerable species. logical diversity within the framework of the IUCN Conservation Programme. Objectives of the SSC • promotion of the maintenance of biological diversity by monitoring 1. To participate in the further development, promotion and implementation the status of species and populations of conservation concern. of the World Conservation Strategy; to advise on the development of IUCN's Conservation Programme; to support the implementation of the • development and review of conservation action plans and priorities Programme' and to assist in the development, screening, and monitoring for species and their populations. -
Cultural Heritage Impact Assessment
Cultural Heritage Impact Assessment: Phase 1 Investigation for Proposed Development of New Access Roads within the Marataba Section of the Marakele National Park, Lephalale Local Municipality, Waterberg District Municipality, Limpopo Province For Project Applicant Environmental Consultant Marakele National Park (Pty) Ltd NuLeaf Planning and Environmental (Pty) Ltd 8a Trevor Street Murrayfield Pretoria, 0184 Tel: 012 753 5792 Fax: 086 571 6292 E-mail:[email protected] By Francois P Coetzee Heritage Consultant ASAPA Professional Member No: 028 99 Van Deventer Road, Pierre van Ryneveld, Centurion, 0157 Tel: (012) 429 6297 Fax: (012) 429 6091 Cell: 0827077338 [email protected] Date: January 2018 Version: 2 (Final Report) 1 Coetzee, FP HIA: Proposed New Access Roads, Marataba NP, Limpopo Executive Summary This report contains a comprehensive heritage impact assessment investigation in accordance with the provisions of Sections 38(1) and 38(3) of the National Heritage Resources Act (Act No. 25 of 1999) (NHRA) and focuses on the survey results from a cultural heritage survey as requested by NuLeaf Planning and Environmental (Pty) Ltd. A Basic Assessment (BA) process will be followed for the proposed establishment of approximately 20 km of additional game viewing tracks within the Marataba Section of the Marakele National Park, Lephalale Local Municipality, Waterberg District Municipality, Limpopo Province. The Marakele National Park is located approximately 50 km north east of Thabazimbi. The Basic Assessment process provided for in Regulation 19 read with Appendix 1 of GN R326 of 7 April 2017 of the EIA Regulations, as amended, published under the National Environmental Management Act (Act No. -
A Synthesis of Renosterveld Ecology and Conservation
Environmental Conservation Fragmented Landscape, Fragmented Knowledge: A Synthesis of Renosterveld Ecology and Conservation Emmeline N Topp1,2 and Jacqueline Loos1 cambridge.org/enc 1Institute of Ecology, Faculty of Sustainability Science, Leuphana University Lüneburg, Universitätsallee 1, 21335 Lüneburg, Germany and 2Agroecology, Department of Crop Science, Georg-August University, Grisebachstrasse 6, 37077 Göttingen, Germany Subject Review Summary Cite this article: Topp EN, Loos J (2019) Knowledge of ecological patterns and processes is key to effective conservation of biodiversity Fragmented Landscape, Fragmented Knowledge: A Synthesis of Renosterveld hotspots under threat. Renosterveld is one of the most critically endangered habitats in the Ecology and Conservation. Environmental biologically unique Cape Floristic Region, South Africa. For the first time, we map and Conservation 46: 171–179. doi: 10.1017/ synthesize the current state of knowledge on renosterveld ecology and conservation. We S0376892918000498 investigated 132 studies for the themes, locations and taxa of renosterveld research and the fragmentation, threats, recommendations and barriers to renosterveld conservation. More Received: 4 August 2017 Accepted: 18 December 2018 studies focused on plants than any other taxa (48% of articles) and are conducted mostly in larger, intact renosterveld fragments. The most commonly identified threat to renosterveld Keywords was agricultural intensification; conservation recommendations spanned improved farming Cape Floristic Region; farmland expansion; practices, formal protection and local patch management. Conservation implementation has fire regime; fragmentation; fynbos; South Africa; global biodiversity hotspot; been piecemeal and has depended largely on the goodwill of landowners, which can be Mediterranean ecosystem; value perception constrained by costs of conservation measures and a lack of suitable restoration means. Citizen science is a promising potential solution to some barriers. -
Threatened Ecosystems in South Africa: Descriptions and Maps
Threatened Ecosystems in South Africa: Descriptions and Maps DRAFT May 2009 South African National Biodiversity Institute Department of Environmental Affairs and Tourism Contents List of tables .............................................................................................................................. vii List of figures............................................................................................................................. vii 1 Introduction .......................................................................................................................... 8 2 Criteria for identifying threatened ecosystems............................................................... 10 3 Summary of listed ecosystems ........................................................................................ 12 4 Descriptions and individual maps of threatened ecosystems ...................................... 14 4.1 Explanation of descriptions ........................................................................................................ 14 4.2 Listed threatened ecosystems ................................................................................................... 16 4.2.1 Critically Endangered (CR) ................................................................................................................ 16 1. Atlantis Sand Fynbos (FFd 4) .......................................................................................................................... 16 2. Blesbokspruit Highveld Grassland