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Interplant variation in creosotebush foliage characteristics and canopy arthropods (1989)

Lightfoot, David C. ; Whitford, Walter G.

Springer

Oecologia 81 (1989), S. 166-175

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ISSN: 1432-1939

Keywords: Desert shrubs ; Larrea tridentata ; Nitrogen ; Plant-insect interactions ; Phytophagous insects

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Summary We conducted a field study to test the hypothesis that creosotebush (Larrea tridentata) shrubs growing in naturally nutrient-rich sites had better quality foliage and supported greater populations of foliage arthropods than shrubs growing in nutrient-poor sites. Nutrient-rich sites had significantly higher concentrations of soil nitrogen than nutrient-poor sites. Multivariate analysis of variance revealed significant differences between high nutrient and low nutrient shrubs based on a number of structural and chemical characteristics measured. High nutrient shrubs were larger, had denser foliage, greater foliage production, higher concentrations of foliar nitrogen and water, and lower concentrations of foliar resin than low nutrient shurbs. Numbers of foliage arthropods, particularly herbivores and predators, were significantly higher on high nutrient shrubs. Shrub characteristics and foliage arthropod abundances varied considerably from shrub to shrub. Shrub characteristics representing shrub size, foliage density, foliage growth, and foliar nitrogen and water concentrations were positively correlated with arthropod abundances. Foliar resin concentrations were negatively correlated with foliage arthropod abundances. The positive relationship between creosotebush productivity and foliage arthropods is contradictory to the tenet that physiologically stressed plants provide better quality foliage to insect herbivores.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00379801

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Fatale eosinophile meningoencephalitis nach lackintoxikation (1986)

Kleinert, R. ; Kleinert, G. ; Walter, G. F. ; [et al.]

Springer

European archives of psychiatry and clinical neuroscience 235 (1986), S. 378-381

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ISSN: 1433-8491

Keywords: Eosinophilic meningoencephalitis ; CSF-cytology ; Helminthic infections ; Allergic-toxic encephalitis ; Eosinophile Meningoencephalitis ; CSF-Cytologie ; Wurmerkrankungen ; Allergisch-toxische Enzephalitis

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Description / Table of Contents: Zusammenfassung Berichtet wird über eine akute toxische Schädigung des Gehirns bei einem 43-jährigen Patienten, der 12 Tage vor seinem Tode, nach dem Versiegeln seines Bodens an starken Kopfschmerzen ohne Fieber erkrankte und eine extreme Eosinophilie im Liquor cerebrospinalis zeigte. Eine Übersicht über die mannigfaltige Ätiologie der Liquoreosinophilie wird gegeben.

Notes: Summary The authors report about a 43-year-old male patient, who suffered from an acute toxic brain injury. Twelve days prior to death, after sealing his floor, he experienced progressively increasing headache without fever; the CSF examination disclosed marked eosinophilia. The clinical and pathomorphological features of his illness are discussed and together with the various possible etiologies of eosinophilia in the CSF.