The Foreign Service Journal, February 1970
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Australia: State of the Environment 1996: Chapter 4
Chapter 4 . Biodiversity ‘Still Flying’ from the painting of a Wandering Albatross by Richard Prepared by Weatherly. Denis Saunders (Chair), CSIRO Division of Wildlife and Ecology Andrew Beattie, Centre for Biodiversity and Bioresources, School of Biological Sciences, Macquarie University Susannah Eliott (Research Assistant/Science Writer), Centre for Science Communication, University of Technology, Sydney Marilyn Fox, School of Geography, University of New South Wales Burke Hill, CSIRO Division of Fisheries Bob Pressey, New South Wales National Parks and Wildlife Service Duncan Veal, Centre for Biodiversity and Bioresources, School of Biological Sciences, Macquarie University Jackie Venning, State of Environment Reporting, South Australian Department of Environment and Natural Resources Mathew Maliel (State of the Environment Reporting Unit member), Department of the Environment, Sport and Territories (Facilitator) Charlie Zammit (former State of the Environment Reporting Unit member), Department of the Environment, Sport and Territories (former Facilitator) 4-1 . Australia: State of the Environment 1996 . Contents Introduction. 4-4 Pressure . 4-7 Human populations . 4-9 Urban development . 4-9 Tourism and recreation . 4-9 Harvesting resources and land use. 4-10 Fisheries . 4-10 Forestry . 4-11 Pastoralism. 4-12 Agriculture . 4-12 Introduced species . 4-16 Vertebrates . 4-16 Invertebrates. 4-17 Plants. 4-18 Micro-organisms. 4-20 Native species out of place . 4-20 Pollution . 4-21 Mining . 4-22 Climate change . 4-22 State . 4-23 The state of ecosystem diversity . 4-23 Biogeographic regionalisations for Australia . 4-23 Ecosystem diversity. 4-26 The state of species diversity. 4-30 Number and distribution of species . 4-31 Status of species . -
Law at War: Vietnam, 1964-1973
YIETMM STUDIES LAW AT WAR: VIETNAM * 1964-1973 by Major General George S. Prugh DEPARTMENT OF THE ARMY WASHINGTON, D.C., 1975 Library of Congress Catalog Card Number: 74-3 1399 First Printing For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 -Price $2.30 StockNumber0820-00531 The United States Army has met an unusually complex challenge in Southeast Asia. In conjunction with the other services, the Army has fought in support of a national policy of assisting an emerging nation to develop governmental processes of its own choosing, frpe of outside coercion. In addition to the usual problems of waging armed conflict, the assignment in Southeast Asia has required superimposing the imniensely sophisticated tasks of a modern army upon an under- developed environment and adapting them to demands covering a wide spectrum. These involved helping to fulfill the basic needs of an agrarian population, dealing with the frustrations of antiguerrilla operations, and conducting conventional campaigns against well- trained and determined regular units. Although this assignment has officially ended, the U.S. Army must prepare for other challenges that may lie ahead. While cognizant that history never repeats itself exactly and that no army ever profited from trying to meet a new challenge in terms of the old one, the Army nevertheless stands to benefit immensely from a study of its experience, its shortcomings no less than its achievements. Aware that some years must elapse before the official histories will provide a detailed and objective analysis of the experience in South- east Asia, we have sought a forum whereby some of the more salient aspects of that experience can be made available now. -
Survey of the Underground Signs of Marsupial Moles in the WA Great Victoria Desert
Survey of the underground signs of marsupial moles in the WA Great Victoria Desert Report to Tropicana Joint Venture and the Department of Natural Resources, Environment and the Arts, Northern Territory Government Joe Benshemesh Martin Schulz September 2008 Marsupial moles in the WA Great Victoria Desert Benshemesh & Schulz 2008 Contents Summary.......................................................................................................................3 Introduction..................................................................................................................5 Methods........................................................................................................................7 Methods........................................................................................................................8 Sites.........................................................................................................................8 Trenches.................................................................................................................9 Moleholes ..............................................................................................................9 Additional data ....................................................................................................9 Results..........................................................................................................................12 Characteristics attributes of backfilled tunnels in WA GVD.............................12 -
(A) Global Distribution of Hyperarid and Dryland Areas Figure 9.2
a Figure 9.2 (a) Global distribution of hyperarid and dryland areas Drylands Dry subhumid areas Dry subhumid areas DrylandsSemiarid areas AridSemiarid areas areas DrylandsDryDry subhumidsubhumid areasareas HyperaridArid areas areas SemiaridSemiaridDryDry subhumidsubhumid areasareas areasareas AridArid areasareasHyperarid areas SemiaridSemiarid areasareas HyperaridHyperarid areasareas Map produced by ZOÏ Environment Network, September 2010 Source: UNEAridAridP W orld areasareas Conservation Monitoring Centre DrylandsHyperaridHyperarid areasareas Map produced by ZOÏ Environment Network, September 2010 MapMap producedproduced byby ZOÏZOÏ EnvironmentEnvironment Network,Network, SeptemberSeptember 20102010 Source: UNEDryP subhumidWorld Conservation areas Monitoring Centre Source:Source:b UNEUNEPP WWorldorld ConservationConservation MonitoringMonitoring CentreCentre DrylandsSemiarid areas Arid areas Figure 9.2 DryDry subhumidsubhumid areasareas Hyperarid areas SemiaridSemiarid areasareas (b) Regions MapMap producedproduced byby ZOÏZOÏ EnvironmentEnvironment Network,Network, SeptemberSeptember 20102010 Source:Source: UNEUNEPPAridArid WW areasorldareasorld ConservationConservation MonitoringMonitoring CentreCentre vulnerable to HyperaridHyperarid areasareas Map produced by ZOÏ Environment Network, September 2010 Source: UNEP World Conservation Monitoring Centre desertification MapMap producedproduced byby ZOÏZOÏ EnvironmentEnvironment Network,Network, SeptemberSeptember 20102010 Source:Source: UNEUNEPP WWorldorld ConservationConservation MonitoringMonitoring -
Desert-2.Pdf
Desert Contens Top Ten Facts PG 1 front cover 1 All Deserts are all different but they all have low amounts of rain PG 2 contens 2 Deserts normally have less than 40 CM a year 3 The Sahara desert is in Northern Africa and is over 12 different countries PG 3 top ten facts 4 Sahara desert is the largest desert in the Earth PG 4 whether and climate 5 Only around 20% of the Deserts on Earth are covered in sand 6 Around one third of the Earth's surface is covered in Desert PG 5 desert map 7 The largest cold Desert on Earth is Antarctica PG 6 animals and people that live there 8 Located in South America, the Atacama Desert is the driest place in the world PG 7 what grows there 9 Lots of animals live in Deserts such as the wild dog 10 The Arabian Desert in the Middle East is the second largest hot desert on Earth but is substantially smaller than the Sahara. This is a list of the deserts in Wether And Climate the world Arabian Desert. ... Kalahari Desert. ... Wether Mojave Desert. ... Sonoran Desert. ... Chihuahuan Desert. ... This is a map showing Deserts are usually very, very dry. Even the wettest deserts get less than ten Thar Desert. ... the deserts in the world inches of precipitation a year. In most places, rain falls steadily throughout the Gibson Desert. year. But in the desert, there may be only a few periods of rains per year with a lot of time between rains. -
Evidence of Altered Fire Regimes in the Western Desert Region of Australia
272 Conservation Science W. Aust. 5 (3)N.D. : 272–284 Burrows (2006) et al. Evidence of altered fire regimes in the Western Desert region of Australia N.D. BURROWS1, A.A. BURBIDGE2, P.J. FULLER3 AND G. BEHN1 1Department of Conservation and Land Management, Locked Bag 104, Bentley Delivery Centre, Bentley, Western Australia, 6983. 2Department of Conservation and Land Management, Western Australian Wildlife Research Centre, P.O. Box 51, Wanneroo, Western Australia, 6946. 33 Willow Rd, Warwick, Western Australia, 6024. SUMMARY and senescing vegetation or vast tracts of vegetation burnt by lightning-caused wildfires. The relatively recent exodus of Aboriginal people from parts of the Western Desert region of Australia has coincided with an alarming decline in native mammals INTRODUCTION and a contraction of some fire sensitive plant communities. Proposed causes of these changes, in what The Great Victoria, Gibson, Great Sandy and Little Sandy is an otherwise pristine environment, include an altered Deserts (the Western Desert) occupy some 1.6 million fire regime resulting from the departure of traditional km2 of Western Australia, of which more than 100 000 Aboriginal burning, predation by introduced carnivores km2 is managed for nature conservation. The and competition with feral herbivores. conservation reserves in the Western Desert are large, Under traditional law and custom, Aboriginal people remote and relatively undisturbed. A management option inherit, exercise and bequeath customary responsibilities for such reserves is not to intervene -
The Vegetation of the Western Australian Deserts
©Reinhold-Tüxen-Gesellschaft (http://www.reinhold-tuexen-gesellschaft.de/) Ber. d. Reinh.-Tüxen-Ges. 18, 219-228. Hannover 2006 The Vegetation of the Western Australian Deserts - Erika and Sandro Pignatti, Rom - Abstract The internal area of W. Australia has arid climate and conditions for plant growth are particularly difficult. The surface of this huge, almost uninhabited territory consists of four landscape systems: the Great Sandy Desert, the Little Sandy Desert, the Great Victoria Desert, the Gibson Desert. The four deserts extend between 21-26° of south- ern latitude, linking to the central Australian deserts and the Nullarbor Plain in the South. Meteorological stations are only in settlements of the surrounding semi-desert areas (Wiluna, Meekatharra, Cue, Warburton), and all show around 200-250 mm year- ly rainfall; in the centre of the deserts rainfall is still much lower, and indicated as “erratic and unreliable”; some areas may lack rain for several years. Despite of the par- ticularly severe ecological conditions, most of the surface is covered by vegetation (at least a discontinuous one) and during expeditions in 2001 and 2002 over 700 species were collected and more than 350 phytosociological relevés were carried out.Two main habitat types can be recognized: Mulga – scattered growth of treelets (Acacia aneura, generally about 3-4 m height), with open understorey (Senna, Eremophila, Solanum) and herbs usually covering less than 20 % of the surface; in the Gibson Desert mulga occurs mainly on hard rock sub- strate (granite, laterite). Because of the discontinuous plant cover, fire can spread only over limited areas. Spinifex – Quite a compact cover of perennial grasses (several species of Triodia, with sharply pointed leaves in dense tussocks 3-5 dm high, panicles up to 1 m and high- er) in monospecific populations covering 60-80 % of the surface; in the sandy deserts, on siliceous sand. -
Gibson Desert Bioregion
Gibson Desert bioregion Description Data sources available Area: 156 290 km2 There are no site-based monitoring data. The Gibson Desert bioregion has vast, undulating Other data sources include: sand plains, dunefields and lateritic gibber plains. The vegetation is mainly mulga and other mixed shrubs n fire extent, intensity and frequency, which over spinifex. The bioregion includes Aboriginal land, provides high reliability for reporting change unallocated crown land and conservation reserves. n dust Conservation and Aboriginal land are the main land n distribution and relative abundance of invasive uses. The bioregion has a very low population, with animals and weeds the major centres being the Kanpa, Patjarr and Tjirrkarli Aboriginal communities. n land use n conservation estate. Location The Gibson Desert bioregion is located in the Climate central east rangelands of Western Australia The Gibson Desert bioregion has an arid climate (see Figure 1). with variable and unpredictable rainfall. Spatially averaged median (1890–2005) rainfall is 163 mm Figure 1 Location of the Gibson Desert (April to March rainfall year; see Figure 2). bioregion Figure 2 Decile rainfall for the period 1991–1992 to 2004–2005 10 9 8 7 6 median 5 4 3 Rainfall decile 2 1 0 1991-92 1993-94 1995-96 1997-98 1999-00 2001-02 2003-04 Rainfall year Annual rainfall is for the 12‑month period 1 April to 31 March. Location of Gibson Desert bioregion Gibson Desert bioregion 1 Decile rainfall was generally well above average for Components of total grazing the 1992–2005 period after improving from a drier pressure year in 1991–1992. -
Geomorphology and Quaternary History of the Australian Continental Dunefields R. J. WASSON
Geographical Review of Japan Vol. 59 (Ser. B), No. 1, 55-67, 1986 Geomorphology and Quaternary History of the Australian Continental Dunefields R. J. WASSON This summary paper forms part of a Japanese-Australian research project on human impact in the Australian semi-arid and arid zone. The dunefields are introduced in their various geologic and geomorphic settings and the sources and types of dune sands are then examined. The chro nology of dune building is detailed from the earliest evidence of aeolian activity. This is followed by a reconstruction of the palaeoenvironment of the last dune building phases, an assessment of the impact of Aboriginal burning, and a concluding sketch of the impact of European settlement. scale anti-clockwise whorl in which sand has I. The dunefields in their geologic been transported towards the east in the and geomorphic settings southern part of the dunefield, towards the north in the eastern part, and towards the Continental dunes of varying areal density west in the northern part of the whorl. The occur on about 40% of the surface of Australia most recent mapping of the dunefield has (Figure 1), making dunefields the most common augmented JENNINGS'(1968) map and now it landform assemblage, followed by uplands, is clear that the whorl is closed on its western alluvial plains, the coastal zone, lakes and side in the Gibson Desert of Western Australia. volcanic landforms. Examples of the main dune Despite the apparent potential for transport types are shown in Figure 2. Linear dunes of of sand over long distances around the whorl, different types are dominant in the dunefields, grain size and petrographic data show that with linear narrow crested dunes outnumbering sand has not moved very far from its sources both broad crested linear dunes and very short (WASSON,1983a). -
Media Coverage of the War
Media Coverage of the War No Censorship The ability of the news media to be present throughout Vietnam and cover the war without censorship was unique - - such reporting freedom did not exist before that conflict and hasn’t since. The absence of censorship appears to have been a development that was not given a great deal of thought - - somewhat like the war itself. Under the Kennedy Administration, with relatively few boots on the ground and scarcely any US reporters on the scene, press coverage of events in Vietnam was sparse until the Buddhist protests against Diem’s policies. And in the Administration belated and bungled reaction to that crisis, press censorship was apparently not considered. President Johnson’s efforts to downplay the seriousness of the conflict and paint a rosy picture of Vietnam was a major factor in his administration’s decision not to impose some form of censorship - - since censorship might alert Congress and the public that the US effort was not going as well as the White House said it was. In addition, until 1967 press coverage of America’s conduct of the war was generally very positive. Even reporters who were critical of the military’s conduct of the war, such as Neil Sheehan or David Halberstam in their accounts of the battle of An Bac in 1963, didn’t question the underlying purpose of the war until much later. In Armies of the Night, published in early 1968, Norman Mailer portrayed the mainstream press as highly critical of the anti- war movement and almost a cheerleader for the Johnson Administration. -
Pre-Columbian Cultivation of Agave Species Through Rock Mulching: Potential for Modern Applications
Brigham Young University BYU ScholarsArchive Theses and Dissertations 2021-07-30 Pre-Columbian Cultivation of Agave Species Through Rock Mulching: Potential for Modern Applications Hector Genaro Ortiz Cano Brigham Young University Follow this and additional works at: https://scholarsarchive.byu.edu/etd Part of the Life Sciences Commons BYU ScholarsArchive Citation Ortiz Cano, Hector Genaro, "Pre-Columbian Cultivation of Agave Species Through Rock Mulching: Potential for Modern Applications" (2021). Theses and Dissertations. 9174. https://scholarsarchive.byu.edu/etd/9174 This Dissertation is brought to you for free and open access by BYU ScholarsArchive. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of BYU ScholarsArchive. For more information, please contact [email protected]. Pre-Columbian Cultivation of Agave Species Through Rock Mulching: Potential for Modern Applications Hector Genaro Ortiz-Cano A dissertation submitted to the faculty of Brigham Young University in partial fulfillment of the requirements for the degree of Doctor of Philosophy J. Ryan Stewart, Chair Steven L. Petersen Neil C. Hansen Michael T. Searcy Antonio Villanueva-Morales Department of Plant and Wildlife Sciences Brigham Young University Copyright © 2021 Hector Genaro Ortiz-Cano All Rights Reserved ABSTRACT Pre-Columbian Cultivation of Agave Species Through Rock Mulching: Potential Application for Modern Cultivation Hector Genaro Ortiz-Cano Department of Plant and Wildlife Sciences, BYU Doctor of Philosophy As global temperatures rise, cultivation of C3 and C4 crops in arid and semi-arid regions will face major challenges in producing biomass for billions of people. Conventional agricultural techniques that require copious irrigation will need to be complemented with dryland-farming techniques and drought-tolerant crops, such as those from the Agave genus, which use CAM photosynthesis. -
Geomorphology and Biogeography of Tropical Deserts - Silvio Carlos Rodrigues, Gelze Serrat De Souza Campos Rodrigues
TROPICAL BIOLOGY AND CONSERVATION MANAGEMENT – Vol. IX - Geomorphology and Biogeography of Tropical Deserts - Silvio Carlos Rodrigues, Gelze Serrat de Souza Campos Rodrigues GEOMORPHOLOGY AND BIOGEOGRAPHY OF TROPICAL DESERTS Silvio Carlos Rodrigues Instituto de Geografia, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil Gelze Serrat de Souza Campos Rodrigues Instituto de Geografia, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil Keywords: Tropical deserts, geomorphology, landforms, landscape, morphological systems, eolian process, dune, erg, hamada, inselbergs, playas, climate, temperature, precipitation, continents, latitude, longitude, biogeography, water-balance. Contents 1. Introduction 2. Tropical Deserts 2.1. Geographical Distribution 2.2. Controlling Factors 2.3. Distinguishing Characteristics 2.3.1. Temperature 2.3.2. Precipitation 3. Processes, Landforms and Tropical Desert Typology 3.1. Eolian Processes 3.2. Sandy Deserts 3.2.1. Dunes 3.2.2. Ergs 3.3. Pavement Features 3.3.1. Regs 3.3.2. Wadis and Chotts 3.3.3. Pediments, Playas and Alluvial Fans. 3.3.4. Mountains Features 4. Biogeography of Tropical Deserts 4.1. Biological Adaptation to Aridity 4.1.1. DesertUNESCO Vegetation – EOLSS 4.1.2. Desert Fauna Glossary Bibliography Biographical SketchesSAMPLE CHAPTERS Summary Geomorphology of Tropical Deserts is driven by the dry climatic condition of the environment. The heat provided by the sun reaches the surface and creates a high temperature in days, but at night the temperature falls. This cycle creates the conditions conducive to the physical weathering that predominates in the tropical deserts. Aeolian processes commands the shaping of surfaces, moving sediments provided by the weathering. These conditions occur in a specific area of the Earth near the sub-tropical ©Encyclopedia of Life Support Systems (EOLSS) TROPICAL BIOLOGY AND CONSERVATION MANAGEMENT – Vol.