Table 1. Published estimates of the immigration parameter I in rainforest tree communities, using Spatially Implicit Neutral Models (SINMs).
Plot code | A | Js | S | m | I | (Gaussian) | (Cauchy) | |
Single large forest plot datasets | ||||||||
Based on taxonomic diversity alone | ||||||||
A | Barro Colorado Island, Panama [44] | 50 ha | 21457 | 225 | 0.093 | 2200 | 122 m | >10 km |
BC | Yasuni National Park, Ecuador [44], [45] | 25 ha50 ha | 7613 17546 | 546 821 | 0.5 0.429 | 7612 13182 | 391 m 504 m | >10 km >10 km |
D | Korup National Park, Cameroon [44] | 50 ha | 24591 | 308 | 0.547 | 29693 | 818 m | >10 km |
E | Pasoh Forest Reserve, Malaysia [44] | 50 ha | 26554 | 678 | 0.093 | 2722.6 | 147 m | >10 km |
F | Sinharaja, Sri Lanka [44] | 25 ha | 16936 | 167 | 0.0019 | 32.3 | 3 m | 2 m |
G | Lambir Hills, Malaysia [44] | 52 ha | 33175 | 1004 | 0.115 | 4310.7 | 216 m | >10 km |
H | Western Ghats, India [46] | 30 ha | 13383 | 148 | 0.082 | 1195.3 | 86 m | >10 km |
Including phylogenetic information [23] | ||||||||
I | Barro Colorado Island, Panama | 50 ha | 20788 | 236 | 0.002 | 41.66 | 2.5 m | ∼0 |
J | La Planada, Colombia | 25 ha | 14100 | 164 | 0.003 | 42.42 | 4 m | 55 m |
K | Pasoh Forest Reserve, Malaysia | 50 ha | 29257 | 674 | 0.01 | 295.5 | 18 m | >10 km |
L | Lambir Hills, Malaysia | 52 ha | 29890 | 990 | 0.008 | 241.0 | 14 m | 6205 m |
Multiple plot datasets | ||||||||
M | Baro Colarado subplot, Cocoli and Sherman plots, Panama [9] | ∼5 ha/plot | 1079–2860 | 99–171 | 30.7–54.2 | 8 m | 419 m | |
N | Western Ghats, India [5] | 1 ha/plot | ∼400/plt | ∼45/plt | 0.01–0.11; 0.003–0.08 | 4.7–50; 1.3–35 4 | 10 m | 436 m |
O | Panama Canal Watershed [24] | 1 ha/plot | ∼400/plt | ∼78/plt | 0.05–0.3 | 21–171 | 34 m | 4334 m |
The corresponding 95% quantile dispersal distances, , are given under the assumption of pure dispersal limitation using the Gaussian and Cauchy kernels (see main text). A is the sample area in ha and Js corresponds to the sample size in number of individuals above 10 cm dbh. S indicates the respective species richness of the sample plots. Bold/normal values respectively denote the published/transformed parameter values of Hubbell's [2] migration rate m or the corresponding immigration parameter, I [21]. m/I and are calculated here for the case when the forest plots represent complete communities (i.e. sample size = community size in Figure 1). values have been rounded to the nearest metre.