PETRIFIED FOREST and PAINTED DESERT PETRIFIED

Total Page:16

File Type:pdf, Size:1020Kb

PETRIFIED FOREST and PAINTED DESERT PETRIFIED r~ HIGHll.JAVS JULY 1958 FORTY CENTS In This Issue: PETRIFIED FOREST and PAINTED DESERT PETRIFIED VOL. XXXIV NO. 7 JULY 1958 FOREST RAYMOND CARLSON, Editor GEORGE M. A VEY, Art E ditor In that intermixture of anthropology, archeology, JAMES E. STEVENS, Business Manager geology, biology, mineralogy, astronomy, history, antiq­ LEGEND uity, geography, topography, poetry, distance, vastness, emptiness, scenery, sunshine and starlight that make up T r-rn Y uccA Mon-r AND THE FLOWER 2 this wonderland we call Arizona the most strangely beau­ D ESC RIPTIO N OF ONE OF OLD i\lloTH ER N _• \TURE's STR ANG EST LOVE AFFAIRS. tiful and weirdly fantastic is that area known, and with poetic appropriateness, as Petrified Forest. GEOLOGY OF TH E PAINTED D ESERT (Whew! We really drooled a bib full that time!) AN D THE PETRIFIED FoRLcS T 7 A LEARNED DI SCUSS ION OF FORCES As of this moment, the official name of this part of \Vl-I ICH MOULDED TI-IE LOVELY LAND. our state is Petrified Forest National Monument. The THE ENCHA;\TF!) S1·0NF FOREST learned ladies and gentlemen of Congress, and with the A N INVITATIO N TO \l!S IT ONE OF President's ready consent and bold signature, ha ve passed ]~'. Aiffl-I 'S MOST FASCINATING AREAS. a law changing the i\!Ionument to Petrified Forest Nation­ LAST STAN D OF Tiff G,wu:s:n SLOTH al Park with a provision that certain private lands in the CAVE IN LOWER GRAND CANYON '~'AS area be acquired by the Government. Acquisition of these HAUNT OF PREHI STORIC ANIMALS. private lands is going forward with haste and ,1 ·ith the DEEP IN THF H FART OF SYCAiVlORE CANYON 34 expenditure of not inconsiderable monies; so it is possible ]sor.ATE D WILDER NESS EXPANSE IS that when you read this Arizona will have one less Na­ i\TrR •\CTION FOR THE VENT URESOME. tional Monument but one more National Parle ERNEST W. McFARLAND You might ask, as we have asked, \\'hy a Monu­ Governor of Arizona ment or Park; vVhat's the difference? A Nati'onal {Vlonu­ ARTZONA HIGHWAY COMMISSION ment, in general terms, is a protected area containing one Wm. P. Copple, Chairman . Yuma item of national interest ( examples: Tonto, Saguaro, L. F. Quinn, Vice-Chairman . Miami Tumacacori, Montezuma Castle, Rainbow Bridge). A Frank L. Christensen, Member Flagstaff National Park is a protected and preserved area containing 1Vlilron L. Reay, i\ lernber ......... ... Safford specific items of national interest, but also possessed of John J. Bugg: Member . Florence vVrn . E. vVilley, State Hwy. Engineer . Phoenix scenic beauty of national and 7..uorld reno--wn and reputa­ Justin Herman, Secretary . Phoenix tion ( examples: Grand Canyon, Zion, Bryce). (The good gentlemen of the National Park Service A1u::60NA H1GI-IWAYS is published monthly by the Arizona Highway may blanch at such a pedestrian explanation, but let it Department a few miles north of the confluence of the Gila and Salt in Arizona. Address: ARIZONA HIGHW AYS, Phoenix, Arizona. be said, with all enthusiasm, that Petrified Forest has all $3.50 per year in U.S. and possessions; $4-50 elsewhere; 40 cents the ingredients of specific interest and incomparable each. Entered as second-class matter Nov. 5, 1941 at Post Office in scenery to be worthy of the name "National Park" and Phoenix, under Act of March 3, 1879 . Copyrighted, 1958, by the Natio11al P::irk it w ill soon be.) Arizona Highway Department. This month we take you on a journey to Petrified FRONT COVER Forest. We hope you find the journey both pleasant and "GlANT TURNED TO STONE" BY CARLOS ELMER. 4x5 educational, and we hope you'll agree with us th::it Amer­ Burke & James Press camera; Ektachrome; f.16 at 1/ 1oth sec.; ica's newest National Park is something to see and to Goertz Aerotat 6" lens; August, bright sunlight; Meter reading 250-400 foot candles. ASA 12. Scene: about two hundred feet remember. ... R.C. from Monument headquarters and i\lluseum Building, Petrified Forest National Monument, Arizona, near Holbrook. This is Old Faithful petrified log, which is easily the most famous piece of petrified wood in the world. Old Faithful log must rank with the leaders as one of America's most photographed natural wonders. COLOR CLASSICS FROM ARIZONA HIGHWAYS The huge root structure, shown here, towers about 9 feet in height, and the log, itself, measure about 50 feet in length. The experience This Issue of seein g this huge stone tree makes one grateful that such natural 35 mm. slides in 2" 'l'llOrtnts, 1 to 15 slides, 40¢ each; marvels have been preserved for the enjoyment of all. 16 to 49 slides, 35q, each; 50 or 711ore, 3 for $1.00. OPPOSITE PAGE PF-26 Giant Turned to Stone, cov. 1; PF-27 Polished "POLISHED STONE-ONCE LIVING WOOD" BY JOSEF Stone- Once Li,·ing vVood, cov. 2; PF-27 A Polished MUENCH. 4x5 Speed Graphic camera; daylight Ektachrome; Stone-Once LiYing Wood, cov. 2; PF-28 E rosion in f.29 at 1/ 2 sec.; 5" Tessar lens; June. Both of these pictures were Color, cov. 3; PF-29 In the Heart of Petrified Forest, cov. taken inside the Museum at the Rainbow Forest in the Petrified 4; PF-30 Rainbow Colors in Stone, p. 17; PF-, 1 In Blue Forest National Monument. They arc polished pieces showing the Forest of Petrified Forest, p. 18; PF-p The F,~llcn Mon­ beautiful colors and rhc way in w hich the material takes a high arch, p. 19; PF-33 Agate House- Petrified Forest, p. 19; polish after cutting. Petrified wood, found in a number of places PF-34 Panorama- Painted Desert, center spre,1d; PF-,, in Arizona, is avidly sought by collectors. Petrified wood, w hen Landscape of Shimmering Color, p. 22; PF-,6 Arch ~f cut and polished, is used in many striking ways for jewelry, book­ Petrified vVood, p. 22; PF-37 vVildcrness ·of Color­ ends, etc. Collecting of specimens in the National Monument is Painted Desert, p. 23; PF -38 Walls of the Blue Forest, p. 2+ prohibited. ~ 115 ~~ PAGE ONE • ARLZON A HlGH\VAYS • JULY 1958 Closeup, Maj.ave Yucca blossom 1\!lojave Yucca m Bloom Yucca schidegra (mohavensis) flower clusters. Lighting the hills and canyons of the coastal regions is the shimmering beauty of fifteen foot flO\ver spikes of the Candles of God. A tourist might well hazard the guess that the yucca is some kind of cactus. They are often found growing side by side and, to the non-botanist, there might seem to be a certain similarity in appearance. Certain it is that the rapier-like leaves of the yucca are as protective in their sharpness as are the thorns of the cactus. And yet, ower strangely, the naturalist knows the yucca as a lily, a Mature fruit, Joshua Tree member of the g-reat order of Liliaceae; a brother under the ski n to the ~ore tender and succulent garden forms 1110th larvae near mature stage of lilies with which we all are familiar. This kinship is BY VESTA M. AND RALPH D. CORNELL recoQ·n izable in the individual flowers of the yucca and PHOTOGRAPHS BY RALPH D. CORNELL it is -doubtless to this kinship that we owe the ethereal quality of the tall blooming tarers_ which reach toward n the far-flung distances of the Ameri­ from early March to late autumn. Equally prominent in heaven out of a harsh and forb1ddmg background. can Southwest there are many natural interest is the life cycle of the yuccas, for therein lies a Yucca flowers are white or shaded with cream, red phenomena that are unique and of tale of wondrous cooperation between the plant world or violet, usually cup shaped or somewhat flattened into intriguing interest to casual observer and the insect world. saucer-like form. Their petals are thick and of an almost and experienced naturalist alike. Let There are some thirty-odd varieties of yucca native alabaster translucency. They grow, tightly clustered, the passerby but stop to observe al­ to the United States and over half of that number occur along a heavy flower stalk which is generally ere_ct, with most anywhere and he will find some naturally in the Southwest. They vary greatly in form, the individual blossoms .pendulous. However, 111 some aspect of the !ntricate processes by which life in those size and appearance. In the high deserts are the grotesque varieties, just the opposite occurs for both stem and areas can survive. figures of the Joshua Trees, with their "gaunt, stiff arms blossoms. The flowers open at night, like white chalices, Conspicuous in the panoramic scenes of the South­ propping the star-sagged sky." In the low, dry deserts but do not close during the day as do so many of the west are the y uccas, always arresting in form, especially are less conspicuous species which are little more th:111 nocturnal blooms. They have a sweet and penetrating beautiful during their blooming season which extends rosettes of harsh needle-like leaves ,vith short-stemmed fragrance which is sometimes too strong for human pleas- PACE T\VO • ARI ZO NA H J(;JJ WAYS • DRAWINGS OF PRONUBA Y UCCASELLA ARE COPIES FROM PLATES IN THE MISSOU RI BOTAN ICAL GARDEN'S 3nD AN N UAL REPORT, P UBLISHED IN 1892. ORIGIN AL DRA,VINGS MADE BY C. V. RILEY, PH.D. Arriving on the scene with this unfailing timeliness, One cannot find a mature pod of yucca without ure but which seems to be attractive to certain kinds the mother moth goes busily from flower to flow er.
Recommended publications
  • M O J a V E D E S E R T I S S U E S a Secondary
    MOJAVE DESERT ISSUES A Secondary School Curriculum Bruce W. Bridenbecker & Darleen K. Stoner, Ph.D. Research Assistant Gail Uchwat Mojave Desert Issues was funded with a grant from the National Park �� Foundation. Parks as Classrooms is the educational program of the National ����� �� ���������� Park Service in partnership with the National Park Foundation. Design by Amy Yee and Sandra Kaye Published in 1999 and printed on recycled paper ii iii ACKNOWLEDGMENTS Thanks to the following people for their contribution to this work: Elayn Briggs, Bureau of Land Management Caryn Davidson, National Park Service Larry Ellis, Banning High School Lorenza Fong, National Park Service Veronica Fortun, Bureau of Land Management Corky Hays, National Park Service Lorna Lange-Daggs, National Park Service Dave Martell, Pinon Mesa Middle School David Moore, National Park Service Ruby Newton, National Park Service Carol Peterson, National Park Service Pete Ricards, Twentynine Palms Highschool Kay Rohde, National Park Service Dennis Schramm, National Park Service Jo Simpson, Bureau of Land Management Kirsten Talken, National Park Service Cindy Zacks, Yucca Valley Highschool Joe Zarki, National Park Service The following specialists provided information: John Anderson, California Department of Fish & Game Dave Bieri, National Park Service �� John Crossman, California Department of Parks and Recreation ����� �� ���������� Don Fife, American Land Holders Association Dana Harper, National Park Service Judy Hohman, U. S. Fish and Wildlife Service Becky Miller, California
    [Show full text]
  • Climate Change Vulnerability and Adaptation Strategies for Natural Communities Piloting Methods in the Mojave and Sonoran Deserts
    Climate Change Vulnerability and Adaptation Strategies for Natural Communities Piloting methods in the Mojave and Sonoran deserts September 2012 i Prepared by Patrick J. Comer, Chief Ecologist, NatureServe Bruce Young, Director of Species Science, NatureServe Keith Schulz, Regional Vegetation Ecologist, NatureServe Gwen Kittel, Regional Riparian Ecologist, NatureServe Bob Unnasch, Terrestrial Ecologist, Sound Science David Braun, Aquatic Ecologist/Biohydrologist, Sound Science Geoff Hammerson, Research Zoologist, NatureServe Lindsey Smart, Ecologist/Spatial Analyst, NatureServe Healy Hamilton, Climate Scientist/Ecologist, Stephanie Auer, Climate Scientist/Spatial Analyst Regan Smyth, Landscape Ecologist/Spatial Analyst, NatureServe Jon Hak, Ecologist/Spatial Modeler, NatureServe Citation: Comer, P. J., B. Young, K. Schulz, G. Kittel, B. Unnasch, D. Braun, G. Hammerson, L. Smart, H. Hamilton, S. Auer, R. Smyth, and J. Hak.. 2012. Climate Change Vulnerability and Adaptation Strategies for Natural Communities: Piloting methods in the Mojave and Sonoran deserts. Report to the U.S. Fish and Wildlife Service. NatureServe, Arlington, VA. ii Table of Contents Executive Summary ...................................................................................................................................... 1 Introduction and Project Overview ............................................................................................................... 4 Defining Climate-Change Vulnerability and Adaptation Strategies ........................................................
    [Show full text]
  • Biome (Desert)- Climate Affecting Soil And
    With reference to one biome that you have studied, account for the type of climate experienced in this biome and explain how this climate impacts on soils and vegetation within the biome. (80 marks) Marking Scheme: Number of aspects discussed: 3 @ 20 marks each 4 @ 15 marks each For each aspect: Identifying aspect 4 marks 3 marks Discussion 8 x SRPs 6 x SRPs Overall Coherence 20 marks graded* 20 marks graded* In this answer, I choose 3 aspects to discuss (1. Climate, 2. Climate’s impact on soil and, 3. Climate’s impact on vegetation). Overall coherence means how well your answer is structured (Introduction, main section, conclusion – well-structured and coherent) and do you keep to the point/ answer the question directly. Introduction: In this answer I am going to discuss the type of climate experienced in the hot desert biome and how this climate impacts on soils and vegetation within this biome. Biomes are classified according to the predominant vegetation and characterized by adaptations of organisms to that particular environment. They are a large geographical area controlled by climate. Therefore the climate of a particular region will affect what type of soil is formed in that biome as well as what types of plants (flora) grow there. The hot desert that I have studied is the North American Desert Biome. Body of Topic: A desert biome can be defined as an arid region that is characterised by little or no rainfall, in which vegetation is scarce or absent, unless it has specially adapted. As a result of its location, between 15º and 30º north of the Equator, the climate of the hot desert biome is hot and dry.
    [Show full text]
  • The Mediterranean Climate: an Overview of the Main Characteristics and Issues
    Introduction The Mediterranean Climate: An Overview of the Main Characteristics and Issues P. Lionello,1 P. Malanotte-Rizzoli,2 R. Boscolo,3 P. Alpert,4 V. Artale,5 L. Li,6 J. Luterbacher,7 W. May,10 R. Trigo,8 M. Tsimplis,9 U. Ulbrich11 and E. Xoplaki7 1Department of Material Sciences, University of Lecce, Italy, [email protected] 2Massachusetts Institute of Technology, USA, [email protected] 3ICPO, UK and Spain, [email protected] 4Tel Aviv University, Israel, [email protected] 5ENEA, Roma, Italy, [email protected] 6Laboratory of Dynamical Meteorology CNRS, Paris, France, [email protected] 7Institute of Geography and NCCR Climate, University of Bern and NCCR Climate, Switzerland, [email protected], [email protected] 8University of Lisbon, Portugal, [email protected] 9National Oceanography Centre, Southampton, UK, [email protected] 10Danish Meteorological Institute, Copenhagen, Denmark, [email protected] 11Freie Universita¨t Berlin, Germany, [email protected] 1. The Mediterranean Region: Climate and Characteristics The Mediterranean Region has many morphologic, geographical, historical and societal characteristics, which make its climate scientifically interesting. The purpose of this introduction is to summarize them and to introduce the material extensively discussed in the succeeding chapters of this book. The connotation of ‘‘Mediterranean climate’’ is included in the qualitative classification of the different types of climate on Earth (e.g. Ko¨ppen, 1936) and it has been used to define the climate of other (generally smaller) regions besides that of the Mediterranean region itself. The concept of ‘‘Mediterranean’’ climate is characterized by mild wet winters and warm to hot, dry summers and may occur on the west side of continents between about 30 and 40 latitude.
    [Show full text]
  • Outdoor Comfort: Hot Desert and Cold Winter Cities
    Arch. &Comport. I Arch. & Behav., Vol. 10, no 1, p. 73 - 94 73 Outdoor Comfort : Hot Desert and Cold Winter Cities Madis Pihlak Landscape Architecture Program Department of Horticulture University of Maryland College Park, MD 20742-5611 U.S.A. Summary Cities of extreme climate highlight the need for climate sensitive urban design at the site design scale. Relatively inexpensive energy costs have allowed cities as different climatically as Edmonton, Alberta and Phoenix, Arizona to develop more or less in the same manner. Both cities ignore their unique climate and thus any potential to capitalize on their unique characteristics. Both the Sonoran Desert and the high Canadian Prairie are starkly beautiful natural places. By using site design principles which maximize the positive aspects and minimize the negative aspects of each climate type, both cities could develop as uniquely beautiful and comfortable urban places. Most of the literature to date has focused on interior architectural issues of energy conservation or interior comfort. Some urban planning work has focused on the general issue of climate sensitive urban design. There is need for further research with extreme climate cities to develop site level outdoor design principles which will improve everyday comfort within hot desert and cold winter cities. Resume Les villes jouissant d'un climat extreme mettent en Cvidence l'importance d'une planification qui tiendrait compte de cet aspect. Le cofit relativement bas de l'tnergie a permis B des villes aussi diffkrentes sur le plan du climat qu'Edmonton, Alberta, et Phoenix, Arizona, de se dtvelopper de manikre assez semblable. Ces deux villes ne tiennent pas compte du fait qu'elles jouissent d'un climat unique et nCgligent donc toute possibilitC de profiter de cet aspect.
    [Show full text]
  • Precipitation History and Ecosystem Response to Multidecadal Precipitation Variability in the Mojave Desert Region, 1893–2001
    ARTICLE IN PRESS Journal of Arid Environments Journal of Arid Environments 67 (2006) 13–34 www.elsevier.com/locate/jaridenv Precipitation history and ecosystem response to multidecadal precipitation variability in the Mojave Desert region, 1893–2001 R. HerefordÃ,1, R.H. Webb, C.I. Longpre´ US Geological Survey, 2255 North Gemini Drive, Flagstaff, Arizona 86001, USA; 520 North Park Avenue Tucson, AZ 85719, USA Abstract Precipitation varied substantially in the Mojave Desert through the 20th century in a manner broadly similar to the other warm North American deserts. Episodes of drought and prolonged dry conditions (1893–1904, ca. 1942–1975, and 1999-present) alternated with relatively wet periods (1905–ca. 1941 and ca. 1976–1998), probably because of global-scale climate fluctuations. These are the El Nin˜o-Southern Oscillation that affects interannual climate and the Pacific Decadal Oscillation that evidently causes decadal-scale variability such as prolonged dry and wet episodes. Studies done in the late 20th century demonstrate that precipitation fluctuations affected populations of perennial vegetation, annuals, and small herbivores. Landscape rephotography reveals that several species, particularly creosote bush, increased in size and density during the ca. 1976–1998 wet period. A brief, intense drought from 1989 to 1991 and the ongoing drought caused widespread mortality of certain species; for example, chenopods and perennial grasses suffered up to 100% mortality. Drought pruning, the shedding of above-ground biomass to reduce carbon allocation, increased substantially during drought. Overall, drought had the greatest influence on the Mojave Desert ecosystem. r 2006 Published by Elsevier Ltd. Keywords: Mojave desert; Precipitation variability; ENSO; PDO; Desert ecosystem ÃCorresponding author.
    [Show full text]
  • Agriculture Project in India: Hypothetical Agriculture Project for India1
    Climate and Disaster Risk Screening Report for Agriculture Project in India: Hypothetical Agriculture Project for India1 1 This is the output report from applying the World Bank Group's Climate and Disaster Risk Screening Project Level Tool. The findings, interpretations, and conclusions expressed from applying this tool are those of the individual that applied the tool and should be in no way attributed to the World Bank, to its affiliated institutions, to the Executive Directors of The World Bank or the governments they represent. The World Bank does not guarantee the accuracy of the information included in the screening and this associated output report and accepts no liability for any consequence of its use. 1/11 1. Introduction The project level Climate and Disaster Risks Screening Tool provides due diligence on climate and disaster risks at an early concept stage. The tool uses an exposure - sensitivity - adaptive capacity framework to consider and characterize risks from climate and geophysical hazards, based on key components of a project and its broader development context (Annex 1). The tool helps inform consultation, dialogue, and further work to be done in the course of project design. The results of applying the project level tool to screen for climate and disaster risks for "Hypothetical Agriculture Project" in India are summarized below. 2/11 2. Climate and Disaster Risk Screening Results Summary 2.1 Project Information Summary Table 1 below provides key project information. Table 1: Project Information Project Information
    [Show full text]
  • Watermelons Quench the Great Thirst Social Studies
    Watermelons Quench the Great Thirst Grades 5-6 Kalahari is derived from the Tswana word “Kgalagadi”, meaning, “the great thirst”. It is the ancestral land of the Bushmen, nomadic hunter-gatherers, who are thought to be the first inhabitants of southern Africa. Subject: Geography 1. Ask students to locate Botswana, Zimbabwe, Namibia, South Africa, and the Kalahari Desert on their maps. Objective: Students should be able to 2. Explain the term climate and climate groups. (Climate means the average weather conditions begin identifying different of a specific area. The earth has many different climate zones. Climatologists organize similar climate zones. types of climates into groups, based on a region’s vegetation and weather.) Materials: 3. Ask students to try to describe the Kalahari Desert. What is the climate like? Write their Political maps of Africa, descriptions on the board. watermelon 4. Describe the Kalahari Desert’s climate and the term semi-arid. The Kalahari Desert is a Lesson: semi-arid area. (Semi-arid and desert climates occur in regions that have little or no rainfall. Give maps to students and tell The temperature changes drastically from morning to evening.) The Kalahari Desert has vast them you will be discussing areas of red-brown sand and no permanent surface water. It is not really a desert though the climate zones of the because it receives over 250 mm of rainfall annually and has vegetation in some parts. Kalahari Desert and Egypt, where watermelons originated 5. Share the following with the students. The first recorded watermelon harvest occurred and were first harvested.
    [Show full text]
  • Earth System
    Name: Date: Deserts Quiz Class: 1. What do all deserts have in common? 6. What can you infer about penguins from the a. They're all very hot. information presented in the movie? b. They all lack fertile soil. a. Their diet consists mainly of fish. c. They are all very flat. b. They live in the coldest parts of Antarctica. d. They are all completely empty of human life. c. They live alone, and not in groups. d. They are not true birds. 2. A desert's climate is mostly determined by its: a. Latitude 7. Compared to the Sahara Desert, the Gobi Desert is: b. Size a. Wetter c. Population b. Hotter d. Vegetation c. Cooler d. Drier 3. Which two factors keep the Sahara Desert hot? 8. Antelope squirrels and scorpions are nocturnal desert animals. What can you conclude about them from this fact? a. They live in temperate deserts a. Distance from the ocean and very long summer days b. They live in cold deserts b. Volcanic activity and low-pressure air masses c. They live in the parts of deserts nearest to the ocean c. High-pressure air masses and direct sunlight d. They live in hot deserts d. Heat-absorbing soil and abundant hot springs 9. Most animals in hot deserts can't: 4. Which continent is virtually all desert? a. Drink liquid water a. Africa b. Sweat b. South America c. Sleep c. Asia d. Walk d. Antarctica 10. The roots of cactuses: 5. In which region can the air hold the most moisture? a.
    [Show full text]
  • Inland Deserts Region Report
    CALIFORNIA’S FOURTH CLIMATE CHANGE ASSESSMENT Inland Deserts Region Report Coordinating Agencies: CALIFORNIA’S FOURTH CLIMATE CHANGE ASSESSMENT Introduction to California’s Fourth Climate Change Assessment alifornia is a global leader in using, investing in, and advancing research to set proactive climate change policy, and its Climate Change Assessments provide the scientific foundation for understanding climate- related vulnerability at the local scale and informing resilience actions. The Climate Change Assessments C directly inform State policies, plans, programs, and guidance to promote effective and integrated action to safeguard California from climate change. California’s Fourth Climate Change Assessment (Fourth Assessment) advances actionable science that serves the growing needs of state and local-level decision-makers from a variety of sectors. This cutting-edge research initiative is comprised of a wide-ranging body of technical reports, including rigorous, comprehensive climate change scenarios at a scale suitable for illuminating regional vulnerabilities and localized adaptation strategies in California; datasets and tools that improve integration of observed and projected knowledge about climate change into decision- making; and recommendations and information to directly inform vulnerability assessments and adaptation strategies for California’s energy sector, water resources and management, oceans and coasts, forests, wildfires, agriculture, biodiversity and habitat, and public health. In addition, these technical reports have been distilled into summary reports and a brochure, allowing the public and decision-makers to easily access relevant findings from the Fourth Assessment. • A concise summary of the Fourth Assessment’s most important findings and conclusions. • An in-depth report on how California’s people, built KEY FINDINGS environment, and ecosystems will be impacted by climate change and how we can proactively adapt, based on the Fourth Assessment’s findings.
    [Show full text]
  • 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.
    [Show full text]
  • Desert Plants of Utah
    DESERT PLANTS OF UTAH Original booklet and drawings by Berniece A. Andersen Revised May 1996 HG 505 FOREWORD The original Desert Plants of Utah by Berniece A. Andersen has been a remarkably popular book, serving as a tribute to both her botanical knowledge of the region and to her enthusiastic manner. For these reasons, we have tried to retain as much of the original work, in both content and style, as possible. Some modifications were necessary. We have updated scientific names in accordance with changes that have occurred since the time of the first publication and we have also incorporated new geographic distributional data that have accrued with additional years of botanical exploration. The most obvious difference pertains to the organization of species. In the original version, species were organized phylogenetically, reflecting the predominant concepts of evolutionary relationships among plant families at that time. In an effort to make this version more user-friendly for the beginner, we have chosen to arrange the plants primarily by flower color. We hope that these changes will not diminish the enjoyment gained by anyone familiar with the original. We would also like to thank Larry A. Rupp, Extension Horticulture Specialist, for critical review of the draft and for the cover photo. Linda Allen, Assistant Curator, Intermountain Herbarium Donna H. Falkenborg, Extension Editor TABLE OF CONTENTS The Nature of Deserts ........................................................1 Utah’s Deserts ........................................................2
    [Show full text]