THE POLITICAL ECOLOGY of EDUCATION in the BRAZILIAN LANDLESS WORKERS' MOVEMENT by DAVID DUNCAN MEEK

Total Page:16

File Type:pdf, Size:1020Kb

THE POLITICAL ECOLOGY of EDUCATION in the BRAZILIAN LANDLESS WORKERS' MOVEMENT by DAVID DUNCAN MEEK MOVEMENTS IN EDUCATION: THE POLITICAL ECOLOGY OF EDUCATION IN THE BRAZILIAN LANDLESS WORKERS’ MOVEMENT by DAVID DUNCAN MEEK (Under the Direction of J. Peter Brosius and Julie Velásquez Runk) ABSTRACT What are the opportunities and constraints towards advancing agroecological education within Brazil’s Landless Workers’ Movement? In this dissertation, I advance a theoretical framework, which I term the political ecology of education, to help answer this question. The political ecology of education perspective incorporates insights from the political economy of education and political ecology into a holistic perspective. I first trace the intellectual genealogy of this perspective, and the reason agrarian movements mobilize around agroecology. I then apply the political ecology of education lens to illuminate how political and economic processes mediate the interrelations between an agrarian reform settlement of the Brazilian Landless Workers’ Movement (Movimento dos Trabalhadores Rurais Sem Terra or MST), known as the 17 de Abril, and a series of social movement and state-funded educational spaces in southeastern Pará, Brazil. I draw upon the political ecology of education perspective to answer three interrelated questions. First, why does the MST see agroecology as a valuable ideological and practical tool? Second, how do MST activists access political programs and financial resources to facilitate the evolution of agroecological education opportunities in southeastern Pará? Third, what are the opportunities and constraints towards disseminating agroecological education within the MST? Specifically, how does the larger cultural milieu influence efforts to disseminate agroecological education? I address these questions by drawing on 17 months of multi-sited fieldwork from 2009 to 2013, during which I conducted life histories, participant observation of agricultural and movement activities, and an analysis of archival aerial photography and multi-temporal satellite imagery. My analysis of these data reveals that activist professors serve as mediators between the state and MST. These professors are able to access, through every day struggle, the political and economic resources to provide institutionalized agroecological education opportunities. By collaborating with institutionalized education, the MST is able to develop its own autonomous radical educational spaces. However, I also identified various impediments to agroecological education, including the political participation of educators, and the histories of credit and agricultural extension. I advance scholars’ critical analysis of the relationships between politics, economy, ecology and education by developing a political ecology of education framework. INDEX WORDS: Political Ecology, political economy, political ecology of education, political economy of education, Landless Workers’ Movement, MST, critical place-based education, territoriality, Gramsci, politics of scale, educational politics of scale, critical pedagogy, institutional activists, place. MOVEMENTS IN EDUCATION: THE POLITICAL ECOLOGY OF EDUCATION IN THE BRAZILIAN LANDLESS WORKERS’ MOVEMENT by DAVID DUNCAN MEEK B.A., Bard College, 2004 M.Sc., Antioch University New England, 2007 A Dissertation Submitted to the Graduate Faculty of The University of Georgia in Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY ATHENS, GEORGIA 2014 © 2014 David Duncan Meek All Rights Reserved MOVEMENTS IN EDUCATION: THE POLITICAL ECOLOGY OF EDUCATION IN THE BRAZILIAN LANDLESS WORKERS’ MOVEMENT by DAVID DUNCAN MEEK Major Professor: J. Peter Brosius and Julie Velásquez Runk Committee: Ted Gragson Diane Napier Wendy Wolford Electronic Version Approved: Maureen Grasso Dean of the Graduate School The University of Georgia May 2014 DEDICATION I dedicate this dissertation to all the landless farmers in Brazil, and the marginalized communities throughout the world, who see alternative forms of agricultural knowledge and practice as resistance to environmental degradation. iv ACKNOWLEDGEMENTS This dissertation is the product of seven years of academic study, during which I have benefitted from the advice and tireless support of numerous individuals and institutions. First, I would like to thank my major advisers: J. Peter Brosius and Julie Velásquez Runk. The Department of Anthropology at the University of Georgia was the only doctoral program to which I applied. And I applied explicitly to work with Pete. I have never once regretted either decision. Pete’s enthusiasm has helped maintain my motivation since the first communication we had via email when I was considering applying. From my first year, in which I vacillated, on what seemed like a weekly basis, between working in India, Central Africa, New Zealand, Alaska, and ultimately Brazil, Pete was supremely patient and supportive as I honed in on my dissertation topic, through my qualifying exams, hiatus in India, funding negotiations, fieldwork, and writing. Julie’s support has equally been a constant throughout my time at UGA. Her attention to detail, constructive criticism, availability, and mentorship in all things academic has been one of the defining parts of my experience at UGA. Ted Gragson has always been supportive and encouraging, whether it is in feedback on grant applications, research design, fieldwork reports, or careful criticism concerning the mechanics of writing. Ted has an uncanny ability to cut through superfluous verbiage, and identify the weaknesses and merits of arguments. These abilities have unquestionably resulted in a much stronger dissertation. Diane Napier has played a central role in my academic development at UGA. Through education-related coursework with Diane, I focused on the MST as the subject of my research, and first began v exploring the literature that would form the backbone of the dissertation. Diane’s support throughout my time at UGA has been an unquestionable foundation to which I have turned again and again. Although an external committee member, Wendy Wolford has been a pivotal force in shaping both my research and this dissertation. Wendy has challenged me throughout my work to look at what really matters. I remember visiting her at Chapel Hill, where on a walk she pushed me to think critically about what constitutes political participation. This suggestion, and many others, have structured my research design, data collection, analytical framework and writing. I am grateful to Wendy for the time and effort she has devoted to ensuring that my research and writing are rigorous. In addition to my committee, I would also like to express my gratitude to Don Nelson, with whom I worked as a research assistant both at UGA and in Fortaleza, Brazil. The latter trip was pivotal for me, enabling a short visit to my field community, which provided continuity for my research. I’d also like to thank Tommy Jordan and Marguerite Madden for all of their instruction and guidance as I pursued training in GIS, aerial photography, and remote sensing. Their enthusiasm for training and mentorship defines interdisciplinarity, and is an example to which I aspire. Much of the success of this project is also attributed to the assistance and friendship of my colleagues at several institutions in Brazil. I would first like to recognize Bernardo Mançano Fernandes, who continues to be my principal academic mentor, an intellectual inspiration, and an exemplar of engaged scholarship. I would also like to thank Ligia Simonian Perez of NAEA at UFPA for her mentorship and institutional support over the years of this project. Whereas I could easily devote this entire acknowledgement section to the following two individuals, for brevity, and fairness, it must suffice to say that without the assistance of two particular individuals in Brazil, there is no chance this research would ever have gotten off the vi ground, much less been successful. Dan Baron Cohen and Manoela Souza are tireless activists in the region where I conducted my fieldwork, and were instrumental in facilitating my introduction to the 17 de Abril settlement. The ground-work they did before I arrived for my first stint of pilot research in 2009 ensured a smooth landing, and set the stage for a lifelong series of friendships. Over the years they have been intellectual and personal advisers, providing support on all matters personal and professional. I am forever indebted to their friendship, and magnanimity. This research has been made possible by generous funding and in-kind donations from numerous organizations. In chronological order, pilot research funding was supplied by the Latin American and Caribbean Studies Institute’s Tinker Award, and the Janice Steingruber award through the Department of Anthropology. In-kind donations of satellite imagery were provided by both Digital Globe as part of the American Society for Photogrammetry and Remote Sensing’s GeoEye prize, as well as Digital Globe, as part of their 8-band challenge. Dissertation funding was provided by the National Science Foundation (BCS #1060888), the Fulbright Program, and the Social Science Research Council. Particular thanks go out to Deborah Wilson at NSF, Daniella Sarnoff at SSRC, and Jody Dudderar at Fulbright for their patience and commitment to my research during the funding negotiation process. Extra special thanks go out to Patricia Grijo for her administrative and personal support throughout my time in Brazil, particularly during the difficult times of my daughter’s illness while in the field. Last,
Recommended publications
  • Oasis America, Mesoamerica Y Aridoamerica
    OASISAMERICA, MESOAMERICA Y ARIDOAMERICA En el transcurso de los siglos, las prácticas culturales y las condiciones del medio ambiente propiciaron en algunas zonas el desarrollo de la agricultura como fuente principal de subsistencia y con ello, se definieron alrededor de 2500 a.C. dos grandes áreas o superáreas culturales: Aridoamérica y Mesoamérica. En el primer espacio la fuente principal de vida siguió siendo la caza y recolección, mientras que en Mesoamérica la vida se hizo sedentaria con base en la agricultura. Con el paso del tiempo, alrededor de 500 a.C., por la mejora de las técnicas de cultivo y de riego y el intercambio cultural parte de Aridoamérica (Suroeste de los E.U. y el Noroeste de México) fue ocupada por pueblos sedentarios. Esta región con cultura mixta se le conoce como Oasisamérica. Fue el antropólogo Paul Kirchhoff quien conceptualizó en 1943 estas tres grandes áreas geográficas-culturales: Aridoamérica, Oasisamérica y Mesoamérica. Queremos destacar que se trata de conceptos y que estas áreas no eran inmutables, sino en constante transformación de acuerdo con el desarrollo de las sociedades. Oasisamérica En algunas regiones semiáridas, haciendo uso de algunos ríos como el Gila y el Asunción en Arizona, los pobladores no quedaron en el nivel del nomadismo gracias a la adopción de nuevas técnicas e instrumentos de trabajo y el intercambio con las culturas mesoamericanas. Así, dentro de Aridoamérica se empezó a distinguir, alrededor de 500 a.C., un área cultural que se conoce como Oasisamérica. Se ubica en parte de los territorios actuales de Arizona, Nuevo México y California en los E.U.
    [Show full text]
  • Integrated Pest Management of the Mexican Rice Borer in Louisiana and Texas Sugarcane and Rice Francis P
    Louisiana State University LSU Digital Commons LSU Doctoral Dissertations Graduate School 2005 Integrated pest management of the Mexican rice borer in Louisiana and Texas sugarcane and rice Francis P. F. Reay-Jones Louisiana State University and Agricultural and Mechanical College, [email protected] Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_dissertations Part of the Entomology Commons Recommended Citation Reay-Jones, Francis P. F., "Integrated pest management of the Mexican rice borer in Louisiana and Texas sugarcane and rice" (2005). LSU Doctoral Dissertations. 761. https://digitalcommons.lsu.edu/gradschool_dissertations/761 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Doctoral Dissertations by an authorized graduate school editor of LSU Digital Commons. For more information, please [email protected]. INTEGRATED PEST MANAGEMENT OF THE MEXICAN RICE BORER IN LOUISIANA AND TEXAS SUGARCANE AND RICE A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the formal requirements for the degree of Doctor of Philosophy in The Department of Entomology by Francis P. F. Reay-Jones B.S., Université Bordeaux 1, 1999 M.S., Université d’Angers/Institut National d’Horticulture, 2001 August 2005 ACKNOWLEDGEMENTS I wish to express my gratitude to my major advisor, Dr. Thomas E. Reagan, for his guidance, motivation, and also for introducing me with great enthusiasm to LSU football and Cajun cuisine. I would like to express my appreciation to my graduate committee, Drs. Benjamin L Legendre, E.
    [Show full text]
  • PERFORMANCE REPORT State: Louisiana Project Number: W-55-25 Project Title: Upland Survey Period Covered: July 1, 2010
    PERFORMANCE REPORT State: Louisiana Project Number: W-55-25 Project Title: Upland Survey Period Covered: July 1, 2010 - June 30, 2011 Study Number and Title: V-4, Bobwhite Fall Whistling Surveys Study Objective: To determine relative size and distribution of bobwhite populations in Louisiana. Study Abstract Bobwhite fall whistling counts were conducted statewide along 32 routes (7 additional routes were assumed zeros and 4 others were unable to be run). Fall whistling counts did not differ (P = 0.3482) among the 5 habitat types for 2010. They did, however, differ between 2009 and 2010, with more whistling counts detected in 2009 than in 2010 for both the Northwest mixed shortleaf and loblolly pine-hardwood and Florida Parishes loblolly pine habitats. No coveys were recorded on the Northwest mixed shortleaf and loblolly pine- hardwood or Mississippi/Atchafalaya agricultural belt (0.00 whistles/stop) in 2010 (Tables 1 and 2). Jackson- Bienville WMA, Camp Beauregard, and Vernon District No. 1 routes yielded 0.25, 0.00, and 0.10 whistles/stop, respectively (Table 3). Five (5) summer bobwhite counts were conducted on the Sandy Hollow Wildlife Management Area. Counts ranged from 12-45 (Figure 1). The 2011 mean count was 27.6, which is the same as in 2010. The peak count (45) was lower than the long-term (1986-2010) average peak count of 89.3, but was higher than 8 of the past 10 years (Figure 2). A. Activity: Fall whistling counts were conducted along 37 pre-selected routes to determine relative size and distribution of fall bobwhite populations. The 5 habitat types surveyed were historic longleaf pine, mixed shortleaf and loblolly pine-hardwood, loblolly pine (Florida Parishes), the rice belt and the Mississippi/Atchafalaya agricultural belt.
    [Show full text]
  • A. FINAL Rice Report Cover 9-28-00 #2
    Report by the INSTITUTE FOR SCIENCE, TECHNOLOGY AND PUBLIC POLICY George Bush School of Government and Public Service ECOLOGICAL, ECONOMIC AND POLICY ALTERNATIVES FOR TEXAS RICE AGRICULTURE September 25, 2000 Funded by TEXAS WATER RESOURCES INSTITUTE TR-181 Alston, L.T., Lacher, T.E., Slack, R.D., Vedlitz, A., Woodward, R.T., Franklin, J.C., Canzoneri, N., Torres Conkey, A.A., Cowman, D.F., Harris, J., Henry, A., Kennedy, E., Krohn, M.R., Mizell, K., Nicholson, J., Tierce, K., and Wui, Y. (2000). Ecological, economic, and policy alternatives for Texas rice agriculture. A report by the Institute for Science, Technology and Public Policy in the George Bush School of Government and Public Service to the Texas Water Resources Institute/Agricultural Program, Texas A&M University System. (TWRI Report TR-181). This work may not be reproduced in its entirety, nor in part, without the knowledge and permission of its authors. INSTITUTE FOR SCIENCE, TECHNOLOGY AND PUBLIC POLICY A nonpartisan, interdisciplinary public policy research institute. FACULTY RESEARCHERS Letitia T. Alston, Ph.D. • Institute for Science, Technology and Public Policy Thomas E. Lacher, Ph.D. • Wildlife and Fisheries Sciences R. Douglas Slack, Ph.D. • Wildlife and Fisheries Sciences Arnold Vedlitz, Ph.D. • Political Science • Institute for Science, Technology and Public Policy Richard T. Woodward, Ph.D. • Agricultural Economics POST-DOCTORAL RESEARCH ASSOCIATE James C. Franklin, Ph.D. • Political Science • Institute for Science, Technology and Public Policy RESEARCH ASSISTANTS Nicole Canzoneri • Political Science April Ann Torres Conkey • Wildlife and Fisheries Sciences Deborah F. Cowman • Wildlife and Fisheries Sciences Jeanine Harris • Political Science April Henry • Wildlife and Fisheries Sciences Elizabeth Kennedy • Forestry Sciences Michelle R.
    [Show full text]
  • Warehouses Licensed Under the U.S. Warehouse
    Warehouses United States Department of Agriculture Licensed Under the Farm Service U.S. Warehouse Act Agency Deputy Administrator for Commodity As of December 31, 2014 Operations LICENSED AND BONDED WAREHOUSE The Storage of Agricultural Products Is Locked Into the Marketing System Through -- Farmers Who Produce Warehouse Operators Who Store Bankers Who Loan Merchants Who Buy and Sell Processors Who Manufacture Consumers Who Use Users of Electronic Warehouse Receipts and other Electronic Documents With Assurance of Return of the Stored Commodity in Marketable Condition. And the Key Is Integrity of the Warehouse Operator and the Warehouse Receipt Through -- Financial Responsibility Warehouse Facilities and Practices Management’s Ethics and Capabilities Licensing Bonding Examination Electronic Providers March 2015 BACKGROUND INFORMATION LEGISLATIVE The United States Warehouse Act (USWA) or the Act was originally passed by AUTHORITY the Congress on August 11, 1916. On November 9, 2000, the President signed the Grain Standards and Warehouse Improvement Act of 2000 (Public Law 106-472) which amended the USWA in its entirety and modernized the regulation of Federal warehouses to better reflect current trade and operational practices. The 2000 Act authorizes the Secretary of Agriculture to license and examine public warehouse operators that store agricultural products. It also gives the Secretary broad authority to improve the administration of various aspects involving the trade of agricultural products under the purview of the USWA, including the use, establishment and maintenance of electronic warehouse receipts and other electronic documents for all agricultural products. The USWA is considered a “permissive regulatory act.” It is permissive because it only applies to warehouse operators who voluntarily apply for licensing and regulatory because each licensee must operate under its provisions and be subject to the regulations and licensing agreements administered by the USWA.
    [Show full text]
  • Semiarid Ethnoagroforestry Management: Tajos in the Sierra Gorda, Guanajuato, Mexico Vincent M
    Hoogesteger van Dijk et al. Journal of Ethnobiology and Ethnomedicine (2017) 13:34 DOI 10.1186/s13002-017-0162-y RESEARCH Open Access Semiarid ethnoagroforestry management: Tajos in the Sierra Gorda, Guanajuato, Mexico Vincent M. Hoogesteger van Dijk1, Alejandro Casas1 and Ana Isabel Moreno-Calles2* Abstract Background: The semi-arid environments harbor nearly 40% of biodiversity, and half of indigenous cultures of Mexico. Thousands of communities settled in these areas depend on agriculture and using wild biodiversity for their subsistence. Water, soil, and biodiversity management strategies are therefore crucial for people’s life. The tajos, from Sierra Gorda, are important, poorly studied, biocultural systems established in narrow, arid alluvial valleys. The systems are constructed with stone-walls for capturing sediments, gradually creating fertile soils in terraces suitable for agriculture in places where it would not be possible. We analyzed biocultural, ecological, economic and technological relevance of the artificial oasis-like tajos, hypothesizing their high capacity for maintaining agricultural and wild biodiversity while providing resources to people. Methods: We conducted our research in three sections of the Mezquital-Xichú River, in three communities of Guanajuato, Mexico. Agroforestry management practices were documented through semi-structured and in-depth qualitative interviews. Vegetation composition of local forests and that maintained in tajos was sampled and compared. Results: Tajos harbor high agrobiodiversity, including native varieties of maize and beans, seven secondary crops, 47 native and 25 introduced perennial plant species. Perennial plants cover on average 26.8% of the total surface of plots. Tajos provide nearly 70% of the products required by households’ subsistence and are part of their cultural identity.
    [Show full text]
  • 2015 Winter Whole Grain
    VOL 2. NO 1 AND 2 I WINTER 2015 2015 USA RICE OUTLOOK CONFERENCE: WISH YOU WERE HERE! also in this issue: 2015 USA RICE OUTLOOK CONFERENCE INTERNATIONAL DECEMBER 9-11 TRADE: SHERATON NEW ORLEANS TPP – Why Should Rice Care? NEW ORLEANS, LA PAGE 6 CONFERENCE BROCHURE SPECIAL SECTION REP. RALPH ABRAHAM (R-LA) PAGE 8 INTERNATIONAL PROMOTION: Fortified Rice Good for Food Aid PAGE 22 USA Rice Financial Report PAGE 28 FROM THE CHAIRMAN’S FARM: VOL 2. NO 1 & 2 I WINTER 2015 December is a Time to Meet and Help BY DOW BRANTLEY who we are: IT’S DECEMBER WHICH MEANS IT’S TIME FOR THE USA EDITOR: RICE OUTLOOK CONFERENCE — an exciting and valuable annual Michael Klein gathering of the rice industry. We come together, this year in New [email protected] Orleans, to hear interesting speakers talk not just about the outlook for rice in our states and around the world, but to exchange ideas, concepts, DEPUTY EDITOR: and information, and to help each other achieve our common goal: Deborah Willenborg being a part of a profitable and sustainable rice industry. [email protected] Speaking of helping people, I’ve just returned from a trip to Havana, Cuba, where USA Rice participated in the Havana Trade CONTRIBUTORS: Show, and if there was ever a group of people that need our help, it’s Rebecca Bratter, Bob Cummings, Donna Dittmann, Jim Guinn, Colleen the Cuban people. Klemczewski, Meghan Mahoney, Don I know there are people right here at home that need our help too, Molino, Sarah Moran, Linda Sieh and I personally do what I can, and I know you do too.
    [Show full text]
  • Admixture and Population Structure in Mexican-Mestizos Based on Paternal Lineages
    Journal of Human Genetics (2012) 57, 568–574 & 2012 The Japan Society of Human Genetics All rights reserved 1434-5161/12 $32.00 www.nature.com/jhg ORIGINAL ARTICLE Admixture and population structure in Mexican-Mestizos based on paternal lineages Gabriela Martı´nez-Corte´s1,5, Joel Salazar-Flores1, Laura Gabriela Ferna´ndez-Rodrı´guez1, Rodrigo Rubi-Castellanos1, Carmen Rodrı´guez-Loya1, Jesu´s Salvador Velarde-Fe´lix2, Jose´ Franciso Mun˜oz-Valle3, Isela Parra-Rojas4 and He´ctor Rangel-Villalobos1,5 In the nonrecombining region of the Y-chromosome, there are single-nucleotide polymorphisms (Y-SNPs) that establish haplogroups with particular geographical origins (European, African, Native American, etc.). The complex process of admixture that gave rise to the majority of the current Mexican population (B93%), known as Mestizos, can be examined with Y-SNPs to establish their paternal ancestry and population structure. We analyzed 18 Y-SNPs in 659 individuals from 10 Mexican-Mestizo populations from different regions of the country. In the total population sample, paternal ancestry was predominately European (64.9%), followed by Native American (30.8%) and African (4.2%). However, the European ancestry was prevalent in the north and west (66.7–95%) and, conversely, Native American ancestry increased in the center and southeast (37–50%), whereas the African ancestry was low and relatively homogeneous (0–8.8%). Although this paternal landscape concurs with previous studies based on genome-wide SNPs and autosomal short tandem repeats (STRs), this pattern contrasts with the maternal ancestry, mainly of Native American origin, based on maternal lineages haplogroups. In agreement with historical records, these results confirm a strong gender-biased admixture history between European males and Native American females that gave rise to Mexican-Mestizos.
    [Show full text]
  • Texas Rice June 2010 Volume X Number 4
    Texas Beaumont, Texas Rice June 2010 Volume X Number 4 Past, Present, and Future Disease Management in Rice The Texas Rice Belt provides a warm, humid climate favorable for the development of many rice diseases. Rice diseases cause significant reductions in yield, grain quality, and income to rice growers. The development of diseases is greatly affected by many factors including varietal resistance, environmental conditions, and agronomic practices. As a result, the prevalence and severity of diseases significantly vary with year and location. However, losses from certain diseases can be reduced by the use of resistant varieties, improved practices and management, and effective fungicides and their combinations. The purpose Fig. 1. Severity of brown leaf spot in rice varieties affected by year of this article is to briefly review past of varietal release. and current rice diseases and their management and to outline future by Bipolaris oryzae in 1934, leaf smut caused by disease management of rice in Texas. Entyloma oryzae in 1934, narrow brown leaf spot Rice diseases have changed profoundly in caused by Cercospora janseana in 1935, and kernel severity and importance affecting grain yield over smut caused by Tilletia barclayana in 1936 (Atkins, the past 100 years of Texas rice production. Since the 1975). These diseases were commonly seen in rice first Texas rice production in the 1800’s, rice diseases fields. However, leaf smut, narrow brown leaf spot, have continued to be one of the factors limiting rice and kernel smut were minor in damage to rice. Brown production. It was believed that some of the earliest leaf spot could cause severe damage to rice under rice diseases were originally introduced along with favorable environmental conditions.
    [Show full text]
  • Chapter 7 SPACE, TIME, and VARIATION S
    Chapter 7 SPACE, TIME, AND VARIATION s G gi l~ oj . some species can Indeed be said to dl C( have had a single and sudden origin, local­ o Ized and capable of being located. With is others, however, the or/gin Is no origin at 01/ d, but a gradual transformation extending over wide areas and long periods and shifting Its focus In the course of time. Between the two Is every gradation. D.C. Darlington and EK Janakl Amma!, 1945 1 n s' b c s s e ( '\;, Space, Time, and Variation! KINDS OF PATTERNS OF VARIAnON Geographic patterns of variation have historically been used to trace the ori­ gin and evolution of cultivated plants. We have seen that Vavilov (1926. 1949/50) thought that areas of maximum genetic diversity represented centers of origin and that the origin of a crop could be identified by the simple proce­ dure of analyzing variation patterns and plotting regions where diversity was concentrated. It turned out that centers of diversity are not the same as centers of origin. yet many crops do exhibit centers of diversity. The phenomenon is real and requires explanation. What causes variation to accumulate in secon­ dary centers is not too well understood, but some observable factors are: 1. A long history of continuous cultivation. 2. Ecological diversity. many habitats accommodate many races. 3. Human diversity, different tribes are attracted to different races of the crop. 4. Introgression with wild and weedy relatives or between different races of a crop. There may be other causes. but the reasons for secondary centers are hu­ man.
    [Show full text]
  • Reconstructing the History of Mesoamerican Populations Through the Study of the Mitochondrial DNA Control Region
    Reconstructing the History of Mesoamerican Populations through the Study of the Mitochondrial DNA Control Region Amaya Gorostiza1,2,Vı´ctor Acunha-Alonzo3,Lucı´a Regalado-Liu1, Sergio Tirado1, Julio Granados4, David Sa´mano5,He´ctor Rangel-Villalobos6, Antonio Gonza´ lez-Martı´n1* 1 Department of Zoology and Physical Anthropology, Faculty of Biology, Complutense University of Madrid, Madrid, Spain, 2 Laboratorio de Identificacio´n Gene´tica, GENOMICA S.A.U. Grupo Zeltia, Madrid, Spain, 3 Laboratorio de Gene´tica Molecular, Escuela Nacional de Antropologı´a e Historia, Mexico City, Mexico, 4 Divisio´nde Immunogene´tica, Departamento de Trasplantes, Instituto Nacional de Ciencias Me´dicas y Nutricio´n Salvador Zubiran, Mexico City, Mexico, 5 Academia de Cultura Cientı´fica – Humanı´stica, Universidad Auto´noma del Estado de Me´xico, Mexico City, Mexico, 6 Instituto de Investigacio´n en Gene´tica Molecular, Centro Universitario de la Cie´naga, Universidad de Guadalajara, Ocotlan, Mexico Abstract The study of genetic information can reveal a reconstruction of human population’s history. We sequenced the entire mtDNA control region (positions 16.024 to 576 following Cambridge Reference Sequence, CRS) of 605 individuals from seven Mesoamerican indigenous groups and one Aridoamerican from the Greater Southwest previously defined, all of them in present Mexico. Samples were collected directly from the indigenous populations, the application of an individual survey made it possible to remove related or with other origins samples. Diversity indices and demographic estimates were calculated. Also AMOVAs were calculated according to different criteria. An MDS plot, based on FST distances, was also built. We carried out the construction of individual networks for the four Amerindian haplogroups detected.
    [Show full text]
  • April to June, 1917, Inclusive : Index to Volume
    TWO SECTIONS--SECTION TWO (Issue of July 14 1917) The Randal attat r nide INCLUDING Bank St Quotation Section Railway & Industrial Section Electric Railway Section Railway Earnings Section Bankers' Convention Section State and City Section A WEEKLY NEWSPAPER Representing the Industrial Interests of the United States. APRIL TO JUNE, 1917, INCLUSIVE. VOLUME 104—PART 2 WILLIAM B. DANA COMPANY, PUBLISHERS FRONT, PINE & DEPEYSTER STS., NEW YORK. Digitized for FRASER http://fraser.stlouisfed.org/ Federal Reserve Bank of St. Louis Copyrighted in 1917, according to Act of Congress, by WILLIAM B. DANA COMPANY in office of Librarian of Congress, Washington, D. C. Digitized for FRASER http://fraser.stlouisfed.org/ Federal Reserve Bank of St. Louis APRIL-JUNE) 1917.] INDEX. III INDEX TO VOLUME•104 PART 2. APRIL 1 TO JUNE 30 1917. EDITORIAL AND COMMUNICATED ARTICLES. Page. Page. Page A cceptances-See Federal Reserve Matters. pabson Warns of Socialistic Changes After British-(Coucluded) ,racworth, W. M., Before Newlands Corn- 2-• War 2595 Food Controller Ownership Warns of Coming Priva- mittee on Government of Baker, Raymond T., Confirmed as Director tion-Increase of Acreage 1670 Roads 2079 of Mint 1343 Labor Commission, Capital and Labor Agricultural Development, N. Y. Bankers' Baltimore & Ohio RR., Commerce Commis- Commune With 1964 Association on 1448 sion Ruling on Embargo, Practice of 2610 Labor Commission Preparedness Measures, Farm- Co-operating With Agricultural Bank Clearings in Canada-See Canada American Labor 2418 ers Urged to Join in 1340 Bank Clearings at Leading Cities 1361, Labor Strike Among Agricultural Resources, N. Y. State Bank- Munition Workers Co-operate 1772, 2316 and London Bus Drivers 1942 ing Institutions Urged to Bank Clearings by Telegraph_1361, 1772, 2316 Lens (French Coal City) Surrounded__ _ _2582 with Farmers in Developing 1755 Bank Clearings in U.
    [Show full text]