Trockenrasen im pannonischen raum

Zusammenhang der physiognomischen struktur und der floristischen komposition mit den insektenzönosen

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Dry grasslands of the Pannonian lowland: loess, sand and alkali grasslands and semi-dry grasslands of the hilly areas of the Aggtelek karst are compared. Floristical and life-form composition, physiognomical structure are considered in connection to two dominant phytophagous insect groups. The microclimatically sensible, but trophically not specialized Orthoptera-assemblages reflect mostly the physiognomical structure of vegetation. They proved as good indicators of structural changes of vegetation based on quantitative relations of their well-defined life-form types. Because they are relatively unsensible on smaller-scale heterogeneities of their environment, their assemblages can be easily parallelized with the plant associations. Butterflies are often food-plant specialized, thus their resources regularly display a patchy pattern. Hence, their meta-populations often cover a larger area which can be characterized by smaller spots of larval food-plants, stands of nectar-sources and also by a landscape-scale structure of sigma-associations. It means that they do not have a well-defined indicative value as a community, but "individually" several species can be regarded as "keystone species" of large-scale spatial patterns of vegetation.

Original languageGerman
Pages (from-to)509-571
Number of pages63
JournalPhytocoenologia
Volume27
Issue number4
Publication statusPublished - 1997

Keywords

  • Alkali and semi-dry grasslands
  • Butterfly-assemblages
  • Floristic composition and structure
  • Keystone species
  • Loess
  • Orthoptera-assemblages
  • Sand

ASJC Scopus subject areas

  • Plant Science

Cite this

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abstract = "Dry grasslands of the Pannonian lowland: loess, sand and alkali grasslands and semi-dry grasslands of the hilly areas of the Aggtelek karst are compared. Floristical and life-form composition, physiognomical structure are considered in connection to two dominant phytophagous insect groups. The microclimatically sensible, but trophically not specialized Orthoptera-assemblages reflect mostly the physiognomical structure of vegetation. They proved as good indicators of structural changes of vegetation based on quantitative relations of their well-defined life-form types. Because they are relatively unsensible on smaller-scale heterogeneities of their environment, their assemblages can be easily parallelized with the plant associations. Butterflies are often food-plant specialized, thus their resources regularly display a patchy pattern. Hence, their meta-populations often cover a larger area which can be characterized by smaller spots of larval food-plants, stands of nectar-sources and also by a landscape-scale structure of sigma-associations. It means that they do not have a well-defined indicative value as a community, but {"}individually{"} several species can be regarded as {"}keystone species{"} of large-scale spatial patterns of vegetation.",
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