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022_000049/0000

Foundations of Agro-Zoocoenology

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Author
Gusztáv Szelényi
Field of science
Ökológia / Ecology (10733), Ökológia (elméleti és kísérleti, populáció, faj és közösségek szinten) / Ecology (theoretical and experimental: population, species and community level) (10734), Rovartan / Entomology (10704)
Type of publication
monográfia
022_000049/0147
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Page 148 [148]
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022_000049/0147

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146 IVII. Zoocoenological characteristics § THE APPLICATION OF THE CHARACTERISTICS To demonstrate the zoocoenological census methods and the use of characteristics, we use the following example. The census location is a 7 ha field of sweet poppies belonging to the “Béke” Agricultural Cooperative at Nagykovacsi, and the zoocoenological category is a catenarium formed in the arvideserta biotope, on the energy source transformed from the oecus Papaver somniferum. To simplify the example, we omit the other semaphoront groups also caught there (that are obviously associated through the presocium). The field census was performed weekly, starting after the first weeding of the poppies. During the census period, we distinguished four aspects of the catenarium: that of Stenocarus ruficornis (sprouting plants), Apis mellifera (flowering), Neoglocianus (Ceutorrhynchus) maculaalba larvae (development of the poppy heads), and Aphis fabase (after ripening). Only the last three appear on Plate II. The reason for this is the extraordinarily low abundance of Stenocarus ruficornis population (2 adults per 100 plants), and whose further development during the presence of the larval semaphoronts was not followed. It follows from the appearance of the aspects, that a zoocoenosis is a process, composed of a series of events; a dynamic phenomenon during which both its quantitative and qualitative characteristics must change. The table aims to present this movement of the catenarium. To this end - deviating from the general practice - the data presented are not those obtained during the individual censuses, but those that convey the changes in the quantitative and qualitative characteristics within the individual aspects.

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