Table 1.
Overview of the alternative models to describe seed dispersal by humans, their general features and fits to our empirical data (Bn, B. nigra; Bo, B. oleracea).
| model (number) equation | lov at d=0 | dropping rate | fitted parameters | residual sum of squares | |
|---|---|---|---|---|---|
| a | b | ||||
| simple exponential (2.5)ae(−bd) | a | b constant | Bn: 0.295 Bo: 0.190 | Bn: 0.00682 Bo: 0.00254 | Bn: 2.26 Bo: 1.52 |
| double exponential (2.3a)ae(e−bd) | ae Bn: 0.290 Bo: 0.196 | be−bd decreasing | Bn: 0.107 Bo: 0.0721 | Bn: 0.0124 Bo: 0.00736 | Bn: 2.44 Bo: 1.55 |
| double exponential (2.3b)ae(−ebd) | a/e Bn: 0.264 Bo: 0.176 | bebd increasing | Bn: 0.717 Bo: 0.479 | Bn: 0.00386 Bo: 0.00134 | Bn: 2.38 Bo: 1.55 |
| power exponential (2.4)ae(−db) | a | bdb−1b>1: increasing; b<1: decreasing | Bn: 1.480 Bo: 0.947 | Bn: 0.191 Bo: 0.165 | Bn: 1.99 Bo: 1.37 |