International Journal of Biometeorology

, Volume 14, Issue 3, pp 219–226 | Cite as

Hurricane Beulah. A report in retrospect on the hurricane and its effect on biological processes in the Rio Grande Valley, Texas

  • N. E. Flitters


The decreased barometric pressures (to 951.5 mb)that accompanied the wind (113 knots/hr) and the torrential rain that Hurricane Beulah (1967) inflicted on Brownsville, Texas had a marked physiological effect on both biological and vegetative forms of life. Ants survived the floods by congregating in spheres of living colonies and thus floated down the streams to safety; predaceous beetle larvae preyed on frogs and rodents, and crustaceous inhabitants of the beaches migrated en masse to the protection of high ground. Plant materials exhibited phase change in their development.


Plant Material Plant Physiology Biological Process Beach Phase Change 
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Während des Hurrikans Beulah (1967) führte der Fall des Luftdruckes (bis 951,5 mb) im Zusammenhang mit dem Wind (113 Knoten) und stürmischem Regen in Brownsville, Texas, zu einer starken Wirkung auf tierisches und pflanzliches Leben. Ameisen überlebten die Fluten durch Bildung grosser Scheiben lebender Kolonien, die auf den Fluten trieben; räuberische Käferlarven saugten sich an Fröschen und Nagern fest und Schalentiere wanderten in Massen in höhere Lagen am Strand. Pflanzen zeigten in ihrer Entwicklung Phasenwechsel.


La baisse de pression (jusqu'à 951, 5 mb) accompagnée de forts vents (113 noeuds) et de pluies torrentielles provoquée par le passage de la tornade Beulah (1967) à Brownsville (Texas) a eu un effet physiologique marqué sur toutes les formes de vie aussi bien animale que végétale. Les fournis ont survécu à l'inondation en formant des agglomérats de colonies vivantes qui surnageaient sur les flots. Les larves de coléoptères carnivores se sont agrippées à des grenouilles ou à des rongeurs et les crustacés se sont déplacés en masse vers les lieux surélevés du rivage. Quant aux plantes, on a pu constater un changement de phase dans leur développement.


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  2. US ARMY ENGINEER DISTRICT, GALVESTON CORPS OF ENGINEERS, GALVESTON, TEXAS.: Report on Hurricane "Beulah" 8–21 September 1967. 26 pp., 76 plates, 21 exhibits.Google Scholar
  3. US DEPARTMENT OF COMMERCE (1967): Hurricane Beulah. 74 pp.Google Scholar
  4. WELLINGTON, W.G. (1946): The effects of variations in atmospheric pressure upon insects. Canad.J.Res., 24: 51–70.Google Scholar

Copyright information

© Swets & Zeitlinger N.V. 1970

Authors and Affiliations

  • N. E. Flitters
    • 1
  1. 1.US Department of AgricultureBiology Research LaboratoryGainesvilleUSA

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