Gaia Hypothesis
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Cephalobus Litoralis: Biology and Tolerance to Desiccation
Journal of Nematology 20(2):327-329. 1988. © The Society of Nematologists 1988. Cephalobus litorali . Biology and Tolerance to Desiccation M. SAEED, S. A. KHAN, V. A. SAEED, AND H. A. KHAN1 Abstract: Cephalobus litoralis (Akhtar, 1962) Andr~ssy, 1984 reproduced parthenogenetically and completed its life cycle in 72-90 hours. Each female deposited 200-300 eggs. The nematodes showed synchronized movements in the rhythms of the anterior parts of the body. The nematodes were coiled when dried in culture medium or in slowly evaporating water droplets on the tops of culture plates, but in pellets they assumed irregular postures. Nematodes in pellets stored at high humidity could be reactivated after storage for 28 days. Key words: behavior, Cephalobus litoralis, coiling, desiccation tolerance, life cycle, parthenogenesis, synchronized movement. Cephalobus litoralis (Akhtar) Andrfissy, by a modified Baermann funnel method. 1984 was described in 1962 by Akhtar (1) A single gravid female was placed in a cav- as Paracephalobus litoralis based on only two ity slide containing water. After oviposi- female specimens collected from soil tion, a single egg was transferred to a petri around the roots of sugarcane (Saccharum dish containing finely blended pea meal o~cinarum L.) in the agricultural farms of paste (PMP) and water. All experiments the Pakistan Council of Scientific and In- were conducted with nematodes from sin- dustrial Research (PCSIR), Lahore, Paki- gle egg progeny raised in this manner. stan. It had not been reported elsewhere For mass rearing, nematodes were cul- until the authors found it in Karachi. In tured in 14-cm-d petri dishes containing 1967 Andrfissy (3) transferred Eucephalo- pea meal paste. -
Modelling Panspermia in the TRAPPIST-1 System
October 13, 2017 Modelling panspermia in the TRAPPIST-1 system James A. Blake1,2*, David J. Armstrong1,2, Dimitri Veras1,2 Abstract The recent ground-breaking discovery of seven temperate planets within the TRAPPIST-1 system has been hailed as a milestone in the development of exoplanetary science. Centred on an ultra-cool dwarf star, the planets all orbit within a sixth of the distance from Mercury to the Sun. This remarkably compact nature makes the system an ideal testbed for the modelling of rapid lithopanspermia, the idea that micro-organisms can be distributed throughout the Universe via fragments of rock ejected during a meteoric impact event. We perform N-body simulations to investigate the timescale and success-rate of lithopanspermia within TRAPPIST-1. In each simulation, test particles are ejected from one of the three planets thought to lie within the so-called ‘habitable zone’ of the star into a range of allowed orbits, constrained by the ejection velocity and coplanarity of the case in question. The irradiance received by the test particles is tracked throughout the simulation, allowing the overall radiant exposure to be calculated for each one at the close of its journey. A simultaneous in-depth review of space microbiological literature has enabled inferences to be made regarding the potential survivability of lithopanspermia in compact exoplanetary systems. 1Department of Physics, University of Warwick, Coventry, CV4 7AL 2Centre for Exoplanets and Habitability, University of Warwick, Coventry, CV4 7AL *Corresponding author: [email protected] Contents Universe, and can propagate from one location to another. This interpretation owes itself predominantly to the works of William 1 Introduction1 Thompson (Lord Kelvin) and Hermann von Helmholtz in the 1.1 Mechanisms for panspermia...............2 latter half of the 19th Century. -
Biophilia, Gaia, Cosmos, and the Affectively Ecological
vital reenchantments Before you start to read this book, take this moment to think about making a donation to punctum books, an independent non-profit press, @ https://punctumbooks.com/support/ If you’re reading the e-book, you can click on the image below to go directly to our donations site. Any amount, no matter the size, is appreciated and will help us to keep our ship of fools afloat. Contri- butions from dedicated readers will also help us to keep our commons open and to cultivate new work that can’t find a welcoming port elsewhere. Our ad- venture is not possible without your support. Vive la Open Access. Fig. 1. Hieronymus Bosch, Ship of Fools (1490–1500) vital reenchantments: biophilia, gaia, cosmos, and the affectively ecological. Copyright © 2019 by Lauren Greyson. This work carries a Creative Commons BY-NC-SA 4.0 International license, which means that you are free to copy and redistribute the material in any medium or format, and you may also remix, transform and build upon the material, as long as you clearly attribute the work to the authors (but not in a way that suggests the authors or punctum books endorses you and your work), you do not use this work for commercial gain in any form whatsoever, and that for any remixing and transformation, you distribute your rebuild under the same license. http://creativecommons.org/li- censes/by-nc-sa/4.0/ First published in 2019 by punctum books, Earth, Milky Way. https://punctumbooks.com ISBN-13: 978-1-950192-07-6 (print) ISBN-13: 978-1-950192-08-3 (ePDF) lccn: 2018968577 Library of Congress Cataloging Data is available from the Library of Congress Editorial team: Casey Coffee and Eileen A. -
Earths Climate Crisis and the Fate of Humanity PDF Book
REVENGE OF GAIA: EARTHS CLIMATE CRISIS AND THE FATE OF HUMANITY PDF, EPUB, EBOOK James Lovelock | 208 pages | 05 Jun 2007 | The Perseus Books Group | 9780465041695 | English | New York, United States Revenge of Gaia: Earths Climate Crisis and the Fate of Humanity PDF Book It is running a fever born of increased atmospheric greenhouse gases. Ratings and Reviews Write a review. Bibcode : Natur. Lovelock therefore fears - nay, predicts, even - a 'tipping point' in climate is approaching, one which will push the climate beyond Gaia's ability to moderate sufficiently to be compatible with our the Western world's lifestyle. Lovelock proposed that instead of providing negative feedback in the climate system, the components of the CLAW hypothesis may act to create a positive feedback loop. Cancel Submit. James Lovelock, one of the giants of environmental thinking, argues passionately and poetically that, although global warming is now inevitable, we are not yet too late to save at least part of human civilization. Buy It Now. Your question required. Thus appropriate urgent action life support is required to keep the natural systems working temporarily whilst we find and adapt to workable long-term solutions. Walmart April 17, From Wikipedia, the free encyclopedia. Put simply the global natural ecosystem is in bad health. Peterson Paperback 4. It is already too late, Lovelock says, to prevent the global climate from "flipping" into an entirely new equilibrium that will threaten civilization as we know it. To ensure we are able to help you as best we can, please include your reference number:. The book contained some surprising ideas: support for nuclear energy, disapproval of organic farming. -
Peter D. Ward – Curriculum Vitae Born May 12, 1949, Seattle Washington, USA Married, Two Children
1 Peter D. Ward – Curriculum Vitae Born May 12, 1949, Seattle Washington, USA Married, two children 1. Education B.S., 1971 Interdisciplinary Studies (Paleoecology), University of Washington, Seattle M.S., 1973 Geology, University of Washington, Seattle Ph.D., 1976 Geology, McMaster University, Hamilton, Ontario, Canada Employment 1976-1978 Assistant Professor, Department of Geology, Ohio State University 1978-1981 Assistant Professor, Department of Geology, University of California, Davis 1981-1983 Associate Professor with Tenure, Department of Geology and Division of Environmental Sciences, University of California, Davis 1982 Visiting Scientist, Laboratoire Arago (C.N.R.S.), Banyuls, France 1984 Professor, Department of Geology, University of California, Davis 1985 Associate Professor, University of Washington 1986 Professor, Department of Geological Sciences, and Adjunct Professor, Department of Zoology, University of Washington 1989- 1996 Curator of Invertebrate Paleontology, Thomas Burke Memorial Museum, University of Washington 1991. Visiting Scientist, South African Museum 1992-1996 Chairman and Head, Division of Geology and Paleontology, Thomas Burke Memorial Museum, University of Washington 2000. Visiting Scientist, South African Museum 2001 – present, Adjunct Professor, Department of Astronomy, University of Washington 2003- present, Professor, Dept. of Biology, and Professor, Department of Earth and Space Sciences, The University of Washington 2007- Adjunct Curator, Burke Museum of Natural History and Culture, University of -
Advances in Understanding of Desiccation Tolerance of Lichens and Lichen-Forming Algae
plants Review Advances in Understanding of Desiccation Tolerance of Lichens and Lichen-Forming Algae Francisco Gasulla *, Eva M del Campo, Leonardo M. Casano and Alfredo Guéra * Department of Life Sciences, Universidad de Alcalá, Alcalá de Henares, 28802 Madrid, Spain; [email protected] (E.M.d.C.); [email protected] (L.M.C.) * Correspondence: [email protected] (F.G.); [email protected] (A.G.) Abstract: Lichens are symbiotic associations (holobionts) established between fungi (mycobionts) and certain groups of cyanobacteria or unicellular green algae (photobionts). This symbiotic association has been essential in the colonization of terrestrial dry habitats. Lichens possess key mechanisms involved in desiccation tolerance (DT) that are constitutively present such as high amounts of polyols, LEA proteins, HSPs, a powerful antioxidant system, thylakoidal oligogalactolipids, etc. This strategy allows them to be always ready to survive drastic changes in their water content. However, several studies indicate that at least some protective mechanisms require a minimal time to be induced, such as the induction of the antioxidant system, the activation of non-photochemical quenching including the de-epoxidation of violaxanthin to zeaxanthin, lipid membrane remodeling, changes in the proportions of polyols, ultrastructural changes, marked polysaccharide remodeling of the cell wall, etc. Although DT in lichens is achieved mainly through constitutive mechanisms, the induction of protection mechanisms might allow them to face desiccation stress in a better condition. The proportion and relevance of constitutive and inducible DT mechanisms seem to be related to the ecology at which lichens are adapted to. Citation: Gasulla, F.; del Campo, E.M; Casano, L.M.; Guéra, A. -
Evolutionary Processes Transpiring in the Stages of Lithopanspermia Ian Von Hegner
Evolutionary processes transpiring in the stages of lithopanspermia Ian von Hegner To cite this version: Ian von Hegner. Evolutionary processes transpiring in the stages of lithopanspermia. 2020. hal- 02548882v2 HAL Id: hal-02548882 https://hal.archives-ouvertes.fr/hal-02548882v2 Preprint submitted on 5 Aug 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. HAL archives-ouvertes.fr | CCSD, April 2020. Evolutionary processes transpiring in the stages of lithopanspermia Ian von Hegner Aarhus University Abstract Lithopanspermia is a theory proposing a natural exchange of organisms between solar system bodies as a result of asteroidal or cometary impactors. Research has examined not only the physics of the stages themselves but also the survival probabilities for life in each stage. However, although life is the primary factor of interest in lithopanspermia, this life is mainly treated as a passive cargo. Life, however, does not merely passively receive an onslaught of stress from surroundings; instead, it reacts. Thus, planetary ejection, interplanetary transport, and planetary entry are only the first three factors in the equation. The other factors are the quality, quantity, and evolutionary strategy of the transported organisms. -
Holism in Deep Ecology and Gaia-Theory: a Contribution to Eco-Geological
M. Katičić Holism in Deep Ecology and Gaia-Theory: A Contribution to Eco-Geological... ISSN 1848-0071 UDC 171+179.3=111 Recieved: 2013-02-25 Accepted: 2013-03-25 Original scientific paper HOLISM IN DEEP ECOLOGY AND GAIA-THEORY: A CONTRIBUTION TO ECO-GEOLOGICAL SCIENCE, A PHILOSOPHY OF LIFE OR A NEW AGE STREAM? MARINA KATINIĆ Faculty of Humanities and Social Sciences, University of Zagreb, Croatia e-mail: [email protected] In the second half of 20th century three approaches to phenomenon of life and environmental crisis relying to a holistic method arose: ecosophy that gave impetus to the deep ecology movement, Gaia-hypothesis that evolved into an acceptable scientific theory and gaianism as one of the New Age spiritual streams. All of this approaches have had different methodologies, but came to analogous conclusions on relation man-ecosystem. The goal of the paper is to introduce the three approaches' theoretical and practical outcomes, compare them and evaluate their potency to stranghten responsibility of man towards Earth ecosystem which is a self-regulating whole which humanity is part of. Key words: holism, ecosophy, deep ecology movement, gaia-theory, new age, responsibility. Holizam u dubinskoj ekologiji i teoriji Geje: doprinos ekogeološkoj znanosti, filozofija života ili struja New agea? U drugoj polovici 20. stoljeća pojavila su se tri pristupa fenomenu života i ekološkoj krizi s osloncem u holističkoj metodi: ekozofija koja je dala poticaj razvoju pokreta dubinske ekologije, hipoteza Geje koja se razvila u prihvatljivu znanstvenu teoriju i gajanizam kao jedna od New Age duhovnih struja. Ova su se tri pristupa služila različitim metodama, no došla su do analognih zaključaka o odnosu čovjek-ekosustav. -
A Comparison of the Dinosaur Communities from the Middle
Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 31 July 2018 doi:10.20944/preprints201807.0610.v1 Peer-reviewed version available at Geosciences 2018, 8, 327; doi:10.3390/geosciences8090327 1 Review 2 A comparison of the dinosaur communities from 3 the Middle Jurassic of the Cleveland (Yorkshire) 4 and Hebrides (Skye) basins, based on their ichnites 5 6 Mike Romano 1*, Neil D. L. Clark 2 and Stephen L. Brusatte 3 7 1 Independent Researcher, 14 Green Lane, Dronfield, Sheffield S18 2LZ, England, United Kingdom; 8 [email protected] 9 2 Curator of Palaeontology, The Hunterian, University of Glasgow, University Avenue, Glasgow 10 G12 8QQ, Scotland, United Kingdom; [email protected] 11 3 Chancellor's Fellow in Vertebrate Palaeontology, School of Geosciences, University of Edinburgh, 12 Grant Institute, The King's Buildings, James Hutton Road, Edinburgh EH9 3FE, Scotland, United Kingdom; 13 [email protected] 14 * Correspondence: [email protected]; Tel.: 01246 417330 15 16 Abstract: 17 Despite the Hebrides and Cleveland basins being geographically close, research has not 18 previously been carried out to determine faunal similarities and assess the possibility of links 19 between the dinosaur populations. The palaeogeography of both areas during the Middle Jurassic 20 shows that there were no elevated landmasses being eroded to produce conglomeratic material in 21 the basins at that time. The low-lying landscape and connected shorelines may have provided 22 connectivity between the two dinosaur populations. 23 The dinosaur fauna of the Hebrides and Cleveland basins has been assessed based primarily 24 on the abundant ichnites found in both areas as well as their skeletal remains. -
Contemporary Life Stances and Education for Sustainable
WWW.RE-NET.AC.UK PACK T8 AUTUMN 2005 Contemporar y Life Stances and Education for Sustainable Development CONTENTS A pack to support tutors new to RE initial teacher training by Robert Bowie Senior Lecturer in Religious Education, 1 Aims Canterbury Christ Church University 2 Part 1 - Pluralist and multi- disciplinary approaches to con- Contemporary Life Stances and Education for Sus- temporary life stances tainable Development 4 Part 2 - Non statutory guid- ance on RE and ESD Aims 7 Part 3 - Key Considerations The purpose of this pack is 11 Conclusion • to examine important themes for tutors to consider when preparing student teachers for teaching life 12 Appendix stances in Religious Education • to suggest ways in which tutors might encourage stu- 20 Acknowledgments dent teachers to look at the role Religious Education has for education for sustainable development • to identify important themes that RE tutors should refer to when supporting student teachers to teach about environmentalist life stances • to identify starting points for supporting pluralist and critically literate understandings of these topics in RE whether that be with a single religious tradition, across religious and non religious traditions or within a secular framework. RE-NET - CANTERBURY CHRIST CHURCH UNIVERSITY 1 WWW.RE-NET.AC.UK PACK T8 AUTUMN 2005 “Our biggest challenge in this new century is to take an idea that sounds abstract – sustainable de- velopment – and turn it into a reality for all the world’s people.” Kofi Annan, UN press release: SC/SM/7739 “Secretary General Calls for Break in Political Stalemate over Environmental Is- sues”, 15/03/01 Part 1 Pluralist and multi-disciplinary approaches to con- temporary life stances Many of the other induction packs have a focus on a principal UK religion. -
Gaia's Evil Twin: Is Life Its Own Worst Enemy? Page 1 of 5 Gaia's Evil Twin
Gaia's evil twin: Is life its own worst enemy? - life - 17 June 2009 - New Scientist Page 1 of 5 Home | Life | Environment | In-Depth Articles | Back to article Gaia's evil twin: Is life its own worst enemy? 17 June 2009 by Peter Ward Magazine issue 2713. Subscribe and save For similar stories, visit the Endangered Species and Evolution Topic Guides ADVERTISEMENT Interactive graphic: Medean extinctions throughout evolutionary history THE twin Viking landers that defied the odds to land on Mars in 1976 and 1977 had one primary goal: to find life. To the disappointment of nearly all concerned, the data they sent back was a sharp dash of cold water. The Martian surface was harsh and antibiotic and there was no sign of life. To two NASA scientists, James Lovelock and Dian Hitchcock, this came as no surprise - in fact, they would have been amazed to see Toxic gases and mass extinctions mean Earth isn't any evidence of life on Mars. A decade always life friendly (Image: Sarah Howell) before Viking, Lovelock and Hitchcock, both Enlarge image atmospheric scientists, had used observations of the Martian atmosphere to 1 more image deduce that there could be no life on the planet. From their research arose one of the most influential, ground-breaking scientific ideas of the 20th century - the Gaia hypothesis, named after the ancient Greek goddess of the Earth, a nurturing "mother" of life. But is it correct? New scientific findings suggest that the nature of life on Earth is not at all like Gaia. If we were to choose a mythical mother figure to characterise the biosphere, it would more accurately be Medea, the murderous wife of Jason of the Argonauts. -
REVELATORY VERNACULAR RHETORIC on the INTERNET By
PASSAGES DIVINELY LIT: REVELATORY VERNACULAR RHETORIC ON THE INTERNET By ROBERT GLENN HOWARD A DISSERTATION Presented to the Department of English and the Graduate School of the University of Oregon in partial fulfillment of the requirements for the degree of Doctor of Philosophy August 2001 ii "Passages Divinely Lit: Revelatory Vernacular Rhetoric on the Internet," a dissertation prepared by Robert Glenn Howard in partial fulfillment of the requirements for the Doctor of Philosophy degree in the Department of English. This dissertation has been approved and accepted by: Dr. Daniel Wojcik, Chair of the Examining Committee Date Committee in charge: Dr. Daniel Wojcik, Chair Dr. James Crosswhite Dr. David Frank Dr. John Gage Dr. Sharon Sherman Accepted by: Dean of the Graduate School iii © 2001 Robert Glenn Howard iv An Abstract of the Dissertation of Robert Glenn Howard for the degree of Doctor of Philosophy in the Department of English to be taken August 2001 Title: PASSAGES DIVINELY LIT: REVELATORY VERNACULAR RHETORIC ON THE INTERNET Approved: Dr. Daniel Wojcik Since the advent of the public World-Wide-Web in 1992, networked computer communication has rapidly become integral to the daily lives of many North Americans. Many researchers in the humanities and social sciences debate the potential power and nature of the effects of these new forms of communication. Some scholars see dangers in the changing forms of "media literacy," but others see the Internet engendering new levels of democratic debate at grassroots and personal levels. However, much of this research still lacks the basic methodological rigor necessary to make reasonable claims about actual individual human communicative behavior on the Internet.