Datafile Name: Acorns
Story Names: Acorn Size Oak Distribution
Reference: Aizen and Patterson. (1990). Journal of Biogeography, volume 17, p. 327-332.
Description: Interest lies is the relationship between the size of the acorn and the geographic range of the oak tree species. Note that the Quercus tomentella Engelm species in the California region grows only on the Channel Islands (total area 1014 sq. km) and the island of Guadalupe (total area 265 sq. km). All other species grow on the Continental United States.
Number of cases: 39
Variable Names:
  1. Species: Latin name of the species
  2. Region: Atlantic or California region
  3. Range: The geographic area covered by the species in km2x100
  4. Acorn_size: Acorn size (cm3)
  5. Tree_height: Tree Height (m)
The Data:
Species	Region	Range	Acorn_size	Tree_Height
Quercus alba L.	Atlantic	24196	1.4	27
Quercus bicolor Willd.  	Atlantic	7900	3.4	21
Quercus macrocarpa Michx.	Atlantic	23038	9.1	25
Quercus prinoides Willd.	Atlantic	17042	1.6	3
Quercus Prinus L.	Atlantic	7646	10.5	24
Quercus stellata Wang.	Atlantic	19938	2.5	17
Quercus virginiana Mill	Atlantic	7985	0.9	15
Quercus Michauxii Nutt.	Atlantic	8897	6.8	.30
Quercus lyrata Walt.	Atlantic	8982	1.8	24
Quercus Laceyi Small.	Atlantic	233	0.3	11
Quercus Chapmanii Sarg.	Atlantic	1598	0.9	15
Quercus Durandii Buckl.	Atlantic	1745	0.8	23
Quercus Muehlenbergii Engelm	Atlantic	17042	2.0	24
Quercus ilicifolia Wang.	Atlantic	4082	1.1	3
Quercus incana Bartr.	Atlantic	3775	0.6	13
Quercus falcata Michx.	Atlantic	13688	1.8	30
Quercus laevis Walt.	Atlantic	3978	4.8	9
Quercus laurifolia Michx.	Atlantic	5328	1.1	27
Quercus marilandica Muenchh.	Atlantic	18480	3.6	9
Quercus nigra L.	Atlantic	10161	1.1	24
Quercus palustris Muenchh.	Atlantic	8643	1.1	23
Quercus Phellos L.	Atlantic	9920	3.6	27
Quercus rubra L.	Atlantic	28389	8.1	24
Quercus velutina Lam.	Atlantic	21067	3.6	23
Quercus imbricaria Michx.	Atlantic	14870	1.8	18
Quercus myrtifolia Willd.	Atlantic	2540	0.4	9
Quercus texana Buckl.	Atlantic	829	1.1	9
Quercus coccinea Muenchh.	Atlantic	8992	1.2	4
Quercus Douglasii Hook. & Arn	California	559	4.1	18
Quercus dumosa Nutt.	California	433	1.6	6
Quercus Engelmannii Greene	California	259	2.0	17
Quercus Garryana Hook.	California	1061	5.5	20
Quercus lobata Nee	California	870	5.9	30
Quercus agrifolia Nee.	California	803	2.6	23
Quercus Kelloggii Newb.	California	826	6.0	26
Quercus Wislizenii A. DC.	California	699	1.0	21
Quercus chrysolepis Liebm.	California	690	17.1	15
Quercus vaccinifolia Engelm.	California	223	0.4	1
Quercus tomentella Engelm	California	13	7.1	18