Latitudinal decrease in acorn size in bur oak (Quercus macrocarpa) is due to environmental constraints, not avian dispersal

Botany

Volumn 87, Issue 4, 2009, Pages 349-356

  Koenig, Walter D ^a   Knops, Johannes M H ^b   Dickinson, Janis L ^a   Zuckerberg, Benjamin ^a  

^a Fuller Evolutionary Biology Program   (United States)

^b UNIVERSITY OF NEBRASKA LINCOLN   (United States)

Author keywords

Blue jay; Differential dispersal; Latitudinal gradient; Life history trade offs; Seed dispersal; Seed size

Indexed keywords

DECIDUOUS TREE; ENVIRONMENTAL FACTOR; GLACIATION; HYPOTHESIS TESTING; LATITUDINAL GRADIENT; LIFE HISTORY; PASSERINE; SEED DISPERSAL; SEED SIZE;

AVES; CYANOCITTA; CYANOCITTA CRISTATA; QUERCUS; QUERCUS MACROCARPA;

EID: 68049123272     PISSN: 19162804     EISSN: None     Source Type: Journal    
DOI: 10.1139/B09-008     Document Type: Article

References (32)

1. Adams, B., White, A., and Lenton, T.M. 2004. An analysis of some diverse approaches to modelling terrestrial net primary productivity. Ecol. Model. 177: 353-391. doi:10.1016/j.ecolmodel. 2004.03.014.
2. Aizen, M.A., and Patterson, W.A. 1990. Acorn size and geographical range in the North American oaks. J. Biogeogr. 17: 327-332. doi:10.2307/2845128.
3. Aizen, M.A., and Patterson, W.A. 1992. Do big acorns matter? - A reply to R.J. Jenson. J. Biogeogr. 19: 581-582. doi:10.2307/2845777.
4. Aizen, M.A., and Woodcock, H. 1992. Latitudinal trends in acorn size in eastern North American species of Quercus. Can. J. Bot. 70: 1218-1222. doi:10.1139/b92-153.
5. Anderson, D.R. 2008. Model based inference in the life sciences: A primer on evidence. Springer-Verlag, New York, N.Y.
6. Baker, H.G. 1972. Seed weight in relation to environmental conditions in California. Ecology, 53: 997-1010. doi:10.2307/1935413.
7. Burnham, K.P., and Anderson, D.R. 2002. Model selection and multimodel inference: A practical information-theoretic approach. 2nd ed. Springer-Verlag, New York, N.Y.
8. Darley-Hill, S., and Johnson, W.C. 1981. Acorn dispersal by the blue jay (Cyanocitta cristata). Oecologia (Berl.), 50: 231-232. doi:10.1007/BF00348043.
9. Fischer, M.P. 2008. Glaciers. [Online]. Available from jove.geol. niu.edu/faculty/fischer/429-info/429trips/NIF/Glaciers.htm [accessed 24 March 2008].
10. Gómez, J.M. 2004. Bigger is not always better: conflicting selective pressures on seed size in Quercus ilex. Evolution, 58: 71- 80. PMID:15058720.
11. Hewitt, N. 1998. Seed size and shade-tolerance: A comparative analysis of North American temperate trees. Oecologia (Berl.), 114: 432-440. doi:10.1007/s004420050467.
12. Isachsen, Y.W., Mock, T.D., Nyahay, R.E., and Rogers, W.B. 1990. New York state geological highway map. New York State Museum educational leaflet No. 33.
13. Johnson, W.C., and Adkisson, C.S. 1986. Airlifting the oaks. Nat. Hist. 95: 40-47.
14. Johnson, W.C., and Webb, T. 1989. The role of blue jays (Cyanocitta cristata L.) in the postglacial dispersal of fagaceous trees in eastern North America. J. Biogeogr. 16: 561-571. doi:10.2307/2845211.
15. Laing, C.L. 1966. Bur oak seed size and shadiness of habitat in southeastern Nebraska. Am. Midl. Nat. 76: 534-536. doi:10. 2307/2423111.
16. Leishman, M.R. 2001. Does the seed size/number trade-off model determine plant community structure? An assessment of the model mechanisms and their generality. Oikos, 93: 294-302. doi:10.1034/j.1600-0706.2001.930212.x.
17. Leishman, M.R., and Westoby, M. 1994. The role of large seeds in seedling establishment in dry soil conditions-experimental evidence for semi-arid species. J. Ecol. 82: 249-258. doi:10.2307/2261293.
18. Moles, A.T., and Westoby, M. 2003. Latitude, seed predation and seed mass. J. Biogeogr. 30: 105-128. doi:10.1046/j.1365-2699. 2003.00781.x.
19. Moles, A.T., Ackerly, D.D., Tweddle, J.C., Dickie, J.B., Smith, R., Leishman, M.R., Mayfield, M.M., Pitman, A., Wood, J.T., and Westoby, M. 2007. Global patterns in seed size. Glob. Ecol. Biogeogr. 16: 109-116. doi:10.1111/j.1466-8238.2006.00259.x. (Pubitemid 44942315)
20. Moore, J.E., and Swihard, R.K. 2006. Nut selection by captive blue jays: importance of availability and implications for seed dispersal. Condor, 108: 377-388. doi:10.1650/0010-5422(2006) 108[377:NSBCBJ]2.0.CO;2. (Pubitemid 43787741)
21. Pielou, E.C. 1991. After the Ice Age. The return of life to glaciated North America. University of Chicago Press, Chicago, Ill. PRISM. 2008. [Online].
22. PRISM Group, Oregon State University, Corvallis. Available from www.prismclimate.org [accessed 17 October 2008].
23. R Development Core Team. 2008. R: A language and environment for statistical computer, version 2.6.2.
24. [Online]. R Foundation for Statistical Computing, Vienna, Austria. Available from www.R-project.org.
25. Scarlett, T.L., and Smith, K.G. 1991. Acorn preference of urban blue jays (Cyanocitta cristata) during fall and spring in northwestern Arkansas. Condor, 93: 438-442. doi:10.2307/1368961.
26. Schopmeyer, C.S. 1974. Seeds of the woody plants of the United States. USDA Agricultural Handbook No. 450.
27. Seiwa, K. 2000. Effects of seed size and emergence time on tree seedling establishment: importance of developmental constraints. Oecologia (Berl.), 123: 208-215. doi:10.1007/s004420051007.
28. Smith, C.C., and Fretwell, S.D. 1974. The optimal balance between size and number of offspring. Am. Nat. 108: 499-506. doi:10. 1086/282929.
29. USGS. 2007. [Online]. US board on geographic names. Available from geonames.usgs.gov/index.html [accessed 1 March 2008].
30. United States Geological Survey. 2008. Digital representations of tree species range maps from Atlas of United States trees by Elbert L. Little, Jr. [Online]. Available from esp.cr.usgs.gov/data/atlas/little [accessed 20 April 2008].
31. Webb, S.L. 1986. Potential role of passenger pigeons and other vertebrates in the rapid Holocene migrations of nut trees. Quat. Res. 26: 367-375. doi:10.1016/0033-5894(86)90096-90097
32. Westoby, M., Jurado, E., and Leishman, M.R. 1992. Comparative evolutionary ecology of seed size. Trends Ecol. Evol. 7: 368- 372. doi:10.1016/0169-5347(92)90006-W.