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Seve- Report- invertebrate fauna on the forest floor of Semuliki NP-Uganda-April 2017

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Progress report of findings to the Monitoring & Research unit of the UWA,
April 2017
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Progress report of findings to the Monitoring & Research unit of the UWA,
April 2017
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Progress report of findings to the Monitoring & Research unit of the UWA,
April 2017
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Seve- Report- invertebrate fauna on the forest floor of Semuliki NP-Uganda-April 2017

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Sever, Z. 2017. The invertebrate fauna on the forest floor of Semuliki rain forest's center. Progress report, submitted to the Monitoring & Research unit of the UWA, April 2017. 15 pp.

Sever, Z. 2017. The invertebrate fauna on the forest floor of Semuliki rain forest's center. Progress report, submitted to the Monitoring & Research unit of the UWA, April 2017. 15 pp.

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Seve- Report- invertebrate fauna on the forest floor of Semuliki NP-Uganda-April 2017

  1. 1. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 1 The invertebrate fauna on the forest floor of Semuliki rain forest's center Zvi Sever Biology Dep., University of Indianapolis, Indiana, U.S.A sever.zvi@gmail.com In order to obtain data on the invertebrates inhabiting the forest floor of a lowland tropical rain forest, I filtered leaves and ground during the dry season (February 2017) in a 1sq.km. area, populated by mixed evergreen forest and semi deciduous forest (see appendix map 4) in middle Semuliki forest (sq. No. 39-40 in map 1, see appendix), Kirumia trail, around 35N UTM 0089712 X 0088735, (see appendix map 2-3) of Semuliki N.P, (extension of Virunga forest) west Uganda on the D.R.C. border. Two samples a day (one between trees and one between a tree's buttresses) were taken over a 3 day period, composed of 80x80 cm of leaves and soil that had been filtered through nets (20x2o mm to 3x3 mm). The ground was filtered to a depth of 1 cm (6 liter each time). In order to obtain data on the mammals, four Trap cameras were wrapped to trees in North west Semuliki NP in the forest, 100 meter from Semuliki river (sq. No. 46-45; Semuliki river and Lamia river junction, around 36N UTM 0092620 X 0093345, see appendix map No. 1). Bait placed in front of three cameras (fruits, vegetables and breadcrumbs). Total of 91 specimens were caught in the filtration activity. Accordingly, 51 specimens covering 22 species were found on the ground surface among the leaves (leaf layer, average depth of 2.6 cm): 2 spiders, 4 snails and 16 species of insects. The 80X80X1 cm volume of filtered soil produced 40 specimens from total of 16 species: 1 species of millipede, 7 of snails and 8 species of insects. In both the leaf layer and the surface/soil layer, the same 4 species were found, that is, a sum total of 34 different species of animals, invertebrates, were observed.
  2. 2. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 2 By calculating how many individuals found in each layer, we can observe that the greatest number of individuals is present in the leaves layer. This can, probably be attributed to the fact that the leaves are humid by the dispersal rains during the dry season. By comparing both, layers and sites the largest number of specimens is in the leaves' layer between trees' buttresses. It can be explained by the comparatively absence effect between the buttresses during the dry season. It was apparent that additional filtering in central Semuliki during the dry season might produce a much longer list of species in both layers. It would be of interest for future research to conduct comparative studies on the forest floor of different flora in Semuliki N.P. (see appendix, map 3). The 'Trap cameras' produce 10,636 pictures with many flying insects and only 8 of mammals, sitatunga and duiker (see appendix, Pictures, p. 10). It is too early for any conclusion and next time it is important to try the Trap cameras method in some other areas in Semuliki NP. See Appendix: Appendix to the Forest floor's filtration research and Trap cameras Please find presented the next data: 1. The temperatures in the filtration sites …………………….. p.3 2. The animals' list and pictures ……………..……………….. p.3 Phylum – ARTHROPODA ………………….…………… p.3 -Spiders ……….………………………………… p.3 -Insects .. ……………………………………….. p.4 -Millipedes ………………………………….…… p.9 Phylum – MOLUSCA …………….……………………… p.9 -Snails ……….…………………………………. p.9 3. Trap Cameras- Pictures………….…………………...……. p.11 4. Maps ………………………………………………………. p.14
  3. 3. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 3 1. Temperatures The temperatures were measured in all the filtration sites every hour from 8:30 to 10:30 am. Stratum measured Average (c°) Air – 5 cm above the leaves……………………..... 25.5 On leaves' surface ……………………………..…. 24.9 Among the leaves ……………………………..…. 24.5 On the ground surface under the leaves …………. 23.8 In the ground (depth 2 cm) ………………………. 42 .3 It is possible to see that as much as we measured deeper to the leaves and ground surface, the temperature is lower. In the ground it is wormer than on ground in the dry season. 2. The animals' list and pictures (34 different species observed) (The pictures of some animals sent for final identification by experts). Body length - in mm. Phylum – ARTHROPODA Class - ARACHNIDA Order – ARANEAE Sub order- Araneomorphae 2 species of spiders: 1) Spider A - Body length 5 mm, found on ground among the leaves Sub order, Family and Species=?
  4. 4. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 4 2) Spider B - Body length 5 mm, found on ground among the leaves Class – INSECTA 24 species of insects: Order – LEPIDOPTERA Caterpillars Sub order, Family and Species=? 3) Caterpillar A - Body length 8 mm, found in the ground 4) Caterpillar - Body length 5 mm, was found among leaves 5) Caterpillar - Body length 70 mm, was found on the leaves 6) Caterpillar - Body length 7 mm, was found among the leaves Pupas Order- ? 7) Pupa's defend – Length 50 mm, Entrance diameter 20mm, was found in the ground
  5. 5. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 5 8) Pupa's defend – Length 50 mm, Entrance diameter 20mm, was found among leaves 9) Pupa -Length 11 mm, found among leaves 10) Pupa- Length 7.5 mm, was found in the ground 11) Pupa-Length 12-19 mm, Max. diameter 5mm,was found among leaves 12) Pupa- (11 pupas) Length 10, 12 mm, was found in the ground
  6. 6. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 6 13) Pupa- Length 10, 11 mm, Max. diameter 4, 5 mm, was found among leaves Order- DICTYOPTERA )‫מפותחים‬ ‫כנפיים‬ ‫(בעלי‬ ‫תיקנים‬ Sub order- BLATTODEA 14) Imago - Body length 10 mm, was found among leaves 15) Imago - Body length 3 mm, was found among leaves 16) Imago - Body length 10 mm, found in the ground 17) Imago - Body length 15 mm, found in the ground
  7. 7. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 7 18) Imago - Body length 15 mm, found in the ground Order: COLEOPTERA Family ? 19) Imago - Body length 7 mm, was found in the ground Order ? Fam.? ‫נמלים‬ ‫או‬ ‫טרמיטים‬‫טרמיטים‬ ‫אם‬ ?-??‫שייכים‬ ‫על‬ '‫קב‬ ‫לאיזו‬ 20) Imago - Body length 4 mm Termite or ant? Was found among lives Order- HYMENOPTERA ‫דבוראים‬ Sub order- APOCRITA Super family- FORMICOIDAE ‫נמלים‬ Family- Formicidae 21) Imago – Body length 2 mm, was found among leaves
  8. 8. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 8 Super family- FORMICOIDAE Family- Formicidae 22) Imago – Body length 10 mm, found among leaves 23) Imago – Body length 13 mm, found among leaves 24) Imago – Body length 2.5 mm, tow dots on the wings, found among leaves 25) Imago – Body length 3 mm, found among leaves
  9. 9. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 9 26) Imago – Big ants, Max head's width 5 mm, found among leaves 27) Imago – Another species of ant ? Sub Phylum – MYRIAPODA 1 species of Millipedes: 28) Millipede – Length 20 mm, was found in the ground Phylum – MOLUSCA Class - GASTROPODA Order – Stylommatophora 11 species of snails:
  10. 10. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 10 –4 Were found in the leaves Snail C – 8 mmSnail B- 10 mmSnail A- 4 mm Snail G- 36 mmSnail F- 7 mmSnail E- 10 mm –7 Were found in the ground Snail C – 10 mmSnail B- part of it-6 mmSnail A- 7 mm ‫חילזון‬2-
  11. 11. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 11 Snail H- 6 mmSnail G-10 mmSnail F- broken, 8 mm dorsal side ventral side, entrance=left Snail I- 6,7 mm 3. Trap Cameras' Pictures Sitatunga-
  12. 12. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 12 Duiker- Duiker enlarged (from different pictures):
  13. 13. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 13 See Maps – next page
  14. 14. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 14 4. Maps Map 1- Grid map of Semuliki N.P.(report about activities in sq. No. 46-45, 40-39) Map 2 - Semuliki N.P. (Photo of the map in the visitor center, April 2015)
  15. 15. Progress report of findings to the Monitoring & Research unit of the UWA, April 2017 --------------------------------------------------------------------------------------------- 15 Map 3 – Semuliki N.P. (fig. 4 in: Semuliki NP general management plan 2005-2015) Map 4 – Plant's map of Semuliki N.P. (map 2 from Howard et all, 1991) Howard, P.C., Butono, F., Kayondo-Jjemba, P., and Muhumuzaa, C. (1991). Integrating forest conservation into district development: a case study. Chapter 5 in: Howard, P.C. (Ed.). Nature Conservation in Uganda's Tropical Forest Reserves. IUCN, Gland, Switzerland and Cambridge, UK. Xvii. 313 pp.

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