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Neil D. Springate The Natural History Museum, London, UK (nds@nhm.ac.uk)

The IBISCA Malaise trap programme and focal taxa: ‘Hymenoptera Parasitica’. Neil D. Springate The Natural History Museum, London, UK (nds@nhm.ac.uk) Sara Pinz ó n University of Panama, Panama, PA Yves Basset Smithsonian Tropical Research Institute, Panama, PA. The Malaise trap programme.

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Neil D. Springate The Natural History Museum, London, UK (nds@nhm.ac.uk)

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  1. The IBISCA Malaise trap programme and focal taxa: ‘Hymenoptera Parasitica’ Neil D. Springate The Natural History Museum, London, UK (nds@nhm.ac.uk) Sara Pinzón University of Panama, Panama, PA Yves Basset Smithsonian Tropical Research Institute, Panama, PA

  2. The Malaise trap programme Site R1 Estimates the flight activity of insects in the understorey For each of 9 sites in 2004: One trap set in the understorey (n = 9) Traps run for 10 days Replication in February/March, May and October 2004 Total 73 trap surveys

  3. Results - abundance per site all arthropods Total 162,113 individuals collected but sampling effort greatly different among sites

  4. Average per survey Raw results Average per survey in Feb-March 2004 Abundance at B1 higher, lower at B2 and C2 during Feb-March 2004 Sticky traps Results - abundance per site

  5. Processing of material: 1) Sorted by higher categories (families) with focal taxa extracted 2) ‘Hymenoptera Parasitica’ isolated but not processed yet 3) From focal taxa: information available on homopterans, sorted by species/morphospecies Site B1

  6. Abundance of most common families (> 100 ind.) per site Formicidae I1 Cixiidae I1 Coccinellidae I1

  7. Relationships between site characteristics and arthropod abundance Best relationship with NDVI

  8. Explain here strategies for processing, sorting and analyzing Hymenoptera Parasitica (and what do they include: not Braconidae, not Ichneumonidae, = Chalcidoidea only?

  9. Collecting effort by method (no. ind.) 3,006 homopterans collected by MT, 179 species Total 15,245 homopterans Challenge: To account for different sampling efforts among sampling methods and habitats Biolleyana

  10. DCA of homopteran spp. collected by MT and ordered by sites: 39 common spp. (no. ind.  9) Total inertia = 1.319 Axis 1 = 34% Axis 2 = 14% of variance I1 rather different but meaning of axes obscure Better calibrating I1

  11. Conclusions • Processing of material difficult without adequate support • Needs to calibrate (rarefaction, re-sampling?) the data • Abundance/activity among sites may be related to forest type (NDVI) • Abundance/activity among sites may/may not be related to other • sampling methods • Differences among sites for homopteran species • obscure at this stage Oronoqua

  12. Acknowledgements: our sponsors and the IBISCA team Part of IBISCA participants during the field replication of May 2004

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