Are you E. J. ASTERAKI?

Claim your profile

Publications (2)3.49 Total impact

  • Article: The impact of the chemical removal of the hedge‐base flora on the community structure of carabid beetles (Col., Carabidae) and spiders (Araneae) of the field and hedge bottom
    E. J. Asteraki, C. B. Hanks, R. O. Clements
    [show abstract] [hide abstract]
    ABSTRACT: In commercial farming practice herbicides may be used to eradicate or manipulate the flora in the base of hedgerows. The effect of this on the carabid and spider communities was assessed. The carabid and spider communities of a hawthorn hedge alongside a semipermanent sward and of the adjacent part of the field were sampled using pitfall traps. The hedge was divided into three replicates of two herbicide treatments (‘Broadshot’ and ‘Roundup’) and a control. The carabid data were ordinated (DECORANA) and showed that both herbicide treatments affected the communities; the spider data showed similar but less marked responses. Both herbicides had important effects on the carabid communities, but, the spider communities were most affected when only the broadleaved forbs were removed.ZusammenfassungÜber die Auswirkungen einer chemischen Entfernung der Heckenboden-Flora auf die Gemeinschaftsstruktur der den Feld- und Heckenboden bewohnenden Laufkäfer (Col., Carabidae) und Spinnen (Araneae)In der kommerziellen landwirtschaftlichen Praxis werden Herbizide verwendet, um die Pflanzen am Boden von Hecken zu entfernen oder zu manipulieren. Die Carabiden- und Spinnengemeinschaften einer Weißdornhecke entlang einer semipermanenten Grasnarbe sowie des angrenzenden Feldteils wurden mit Hilfe von Bodenfallen gesammelt. Die Hecke wurde in 3 Parzellen gegliedert, von denen 2 mit Herbiziden (“Broadshot” und “Roundup”) behandelt wurden, während die 3. Parzelle als Kontrolle unbehandelt blieb. Die Carabidenfauna wurde einer DECORANA-Datenanalyse unterzogen. Aus den Ergebnissen geht hervor, daß beide Herbizide die Gemeinschaft der Laufkäferarten wesentlich beeinflußte. Die Spinnen reagierten im allgemeinen weniger stark. Sie zeigten ihre größten Veränderungen, wenn die breitblätterigen Pflanzen entfernt wurden.
    Journal of Applied Entomology 08/2009; 113(1‐5):398 - 406. · 1.31 Impact Factor
  • Article: The impact of two insecticides on predatory ground beetles (Carabidae) in newly‐sown grass
    E. J. ASTERAKI, C. B. HANKS, R. O. CLEMENTS
    [show abstract] [hide abstract]
    ABSTRACT: Field scale experiments carried out over three years showed that chlorpyrifos reduced the numbers of several carabid beetle species caught in pitfall traps. Fonofos seed treatment was also shown to affect selected species. Consideration of the biology of individuals of groups of species provided explanations of why some species such as Nebria brevicollis, Notiophilus spp., Bembidion spp., and Trechus quadristriatus were severely affected by one or other of the chemicals, whereas other species (e.g. Amara spp., Harpalus spp.) were able to survive or recolonise pastures shortly after chemical application. Measurements of elytral and pronotal widths and counts of mature eggs in N. brevicollis, which was trapped in reduced numbers over a long period, were made and provided some information about the mode of action of these chemicals.
    Annals of Applied Biology 02/2008; 120(1):25 - 39. · 2.18 Impact Factor