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Ecology of ants

Ecology of ants

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Ecology of ants

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Presentation Transcript

  1. Ecology of ants Ant Mosaics and Dominance

  2. Ants` role in ecosystems • 40-60% of all animal biomass • predation & scavenging

  3. Ants` role in ecosystems • niche diversification • structuring the invertebrate community

  4. Community ecology of ants • convenient model organisms • modular, sessile organisms • parallel with plants

  5. Ant Functional Groups • Andersen 1986 • parallel to Grime`s classification

  6. Dominant Dolichoderinae Subordinate Camponotini Generalized Myrmicinae

  7. Ant Mosaics • groups of particular co-occurring ant species • specific functional groups • positive & negative associations

  8. Nigeria /Taylor 1975/ negative associations positive associations

  9. abundance

  10. Ant Dominance • space and food resources monopolization • different types of dominance: 1. Ecological 2. Behavioural 3. Numerical

  11. Ant Dominance • cca. 150 of 12 000 species referred as dominant Dolichoderinae Formicinae Myrmicinae

  12. Ant Dominance • trophobiosis • arboreal ants • nitrogen gained from lower trophic levels

  13. Ant Dominance PCA, 53% ax1+ax2

  14. Cluster analysis Ward`s method Euclidean distances • 4 groups of dominant ants distinguished

  15. Phylogeny vs Environment 0,329 Phylogeny 0,166 Environment 0,043 0,053