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Dit wordt hem!

Welk dier moet vaak kakken en kijkt tevens veel oude presentaties terug? "Een Diarree"

Nick Pruijn

on 2 October 2012

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Transcript of Dit wordt hem!

Trapstation tree DBH
Trapstation tree height

Vertical column of 3m in diameter
# Coverage plains
# Branches
# Trees
Average DBH
Vertical column of 6m in diameter
% Canopy cover
# Shrubs
# Lianas Marmosa Constantiae Introduction Gracilinanus Agilis A Paraguayan game of Height and Seek Marsupial Gracilinanus agilis Brownish-grey
Black eye rings Moderately large ears Content Species Methodology Introduction Results Discussion Questions Marmosa constantiae Pale Bellied Wooly mouse opossum
(Thomas, O. 1904) Bi-colored prehensile tail Black eye rings Large and stocky Introduction Complete forest clearing in Paraguay Deforestation RNLB Important key role for opossums Species Methodology Species introduction Methodology Methodology Results Results Discussion Discussion Conclusion Agile Gracile Opossum (Burmeister, 1854) Prehensile Tail Study site Reserva Natural Laguna Blanca (RNLB) Data sampling Dry season
Total #traps
Sherman (23x8x9 cm)
Rebait Overall trapping results The 3 habitats Methodology Opossum data collection Vertical strata Opossum data collection Methodology Habitat structure data collection Habitat structure influences Trap
Transparant bag
Spring balance
Notebook Difference in weight between the sexes of Marmosa Constaniae Difference in weight between the sexes of Gracilinanus Agilis per habitat Methodology Opossum data collection movie Omnivorous Insects Nuts and berries G. Agilis
(OR 7,8; 95% CI 5,8; 10,2)
(OR 2,7; 95% CI 1,6; 4,7)

M. Constantiae
(OR 6,2; 95% CI 1,2; 32,2)
(OR 3.1; 95% CI 0,8; 12,4) Vertical stratification (Bakker & Kelt 2000, Malcolm 1995, McClearn et al. 1994, Stallings 1989).
Branch diameter per strata (Gallardo-Sintas et al. 2005, Meserve 1981).
Disturbed and less complex habitat (Hannibal and Caceres 2010, Malcolm 1994, Laurance 1997 and Pardini et al. 2005)
Species diet (Cunha & Vierra, 2002 and Passamani and Fernandez 2011).
Occurrence in habitats (Lambert & Adler 2000; Lambert et al. 2005; Malcolm 1995, 1997; Terborgh et al. 2001). Conclusion Any Questions? Marsupial G. Agilis M. constantiae Aboreal species All three habitats Heaviest in Transitional Forest Canopy species Transitional Forest Depend on shrub density Males heavier than females Depend on canopy density Seed dispersers
Regulators of insects populations
Food source for other predators References • Bakker, V.J. & Kelt, D.A. (2000). Scale dependent patterns in body size distributions of neotropical mammals. Ecology 81: 3530–3547.

• Cunha, A. A. and Vieira, M.V. (2002) Support diameter, incline, and vertical movements of four didelphid marsupials in the Atlantic Forest of Brazil. Journal of Zoology 258: 419-426

• Gallardo-Santis, A., Simonetti, J.A. and Vasquez, R.A. (2005). Influence of tree diameter on climbing ability of small mammals.Journal of Mammalogy 86:969–973.

• Hannibal, W. and Caceres, N.C. (2010). Use of vertical space by small mammals in gallery forest and woodland savannah in south-western Brazil. Mammalia 74: 247–255.

• Lambert, T.D. & Adler, G.H. (2000). Microhabitat use by a tropical forest rodent, Proechimys semispinosus, in central Panama. Journal of Mammalogy 81:70–76.

• Lambert, T.D., Malcolm, J.R. and Zimmerman, B.L. (2005). Variation in small mammal species richness by trap height and trap type in southeastern Amazonia. Journal of Mammalogy 86: 982–990.

• Laurance, W.L. (1997). Responses of mammals to rainforest fragmentation in Tropical Queensland: a review and synthesis. Wildlife Res. 24: 603–612.

• Malcolm, J.R. (1994). Edge effects in central Amazon forest. Ecology 75: 2438–2445.

• Malcolm, J.R. (1995). Forest structure and the abundance and diversity of neotropical small mammals. In Forest canopies: 179 - 197. Lowman, M. D. & Nadkarni, N. M. (Eds). San Diego: Academic Press.

• Malcolm, J.R. (1997). Biomass and diversity of small mammals in Amazonian forest fragments. Tropical forest. 207–221. University of Chicago Press, Chicago, Illinois.

• McClearn, D., Kohler, J., McGowan, K.J., Ceden, O.E., Carbone, L.G. & Miller, D. (1994). Arboreal and terrestrial mammal trapping on Gigante Peninsula, Barro Colorado nature monument, Panama. Biotropica 26:208–213.

• Meserve, P.L. (1981). Resource partitioning in a Chilean semi-arid small mammal community. Journal of Animal Ecology 50:745–757.

• Pardini, R., Marques de Souza, S., Braga-Neto, R. and Metzger, J.P. (2005). The role of forest structure, fragment size and corridors in maintaining small mammal abundance and diversity in an Atlantic Forest landscape. Biological Conservation 124. 253–266

• Passamani, M. and Fernandez, F.A.S. (2011). Abundance and richness of small mammals in fragmented Atlantic Forest of southeastern Brazil. Journal of Natural History 45, Nos. 9-10: 553-565.

• Stallings, J.R. (1989). Small mammal inventories in an eastern Brazilian park. Bulletin Florida State Museum, Biological Sciences 34:153–200.

• Terborgh, J., Lopez, L., Nuñez, P., Rao, M., Shahabuddin, G., Orihuela, G., Riveros, M., Ascanio, R., Adler, G.H., Lambert, T.D. and Balbas, L. (2001). Ecological meltdown in predator-free forest fragments. Science 294:1923–1926. IUCN Red-list IUCN Red list Gracilinanus agilis
Marmosa constantiae Methodology Results Methodology Introduction According to Hannibal & Caceres (2010). Discussion Conclusion
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