Table 4. Mean density of spiders/m2 for different under-vine endemic plant treatments in August 2008, January 2009 and March 2009.
Treatments with means of 0 or 3 (one spider in one plot) have been omitted from the analysis of variance, as denoted by placing these means in brackets. The variability of such treatments is nil or very low, so assuming it is zero, an LS Effect (5%) has been calculated to allow comparison between bracketted and unbracketted means (for full species names see Table 1).
| Endemic planta,b | Density of spiders/m2 in: | ||
|---|---|---|---|
| Aug 2008 | Jan 2009 | Mar 2009 | |
| L. dioica | 8 | (0) | 5 |
| A. inermis ‘purpurea’ | 15 | 10 | 45 |
| L. angulata | (0) | 33 | 20 |
| L. squalida | (3) | 10 | (0) |
| G. sessiliflorum | 60 | 38 | 83 |
| M. axillaris | 20 | 8 | 30 |
| H. chathamica | 38 | 45 | 70 |
| R. hookeri | (0) | 8 | 13 |
| S. uniflorus | (3) | (3) | (0) |
| A. inermis | 5 | 15 | 18 |
| A. bellidioides | 18 | 18 | 23 |
| M. ephedrioides | (0) | – | – |
| R. subsericea | (0) | – | – |
| D. australe | 10 | – | – |
| Ryegrass inter-row | (3) | 10 | 5 |
| Bare earth (control) | (0) | (3) | (0) |
| LSD(5%)c | 25 | 29 | 32 |
| LSEffect(5%)d | 18 | 20 | 23 |
Notes.
All plant species in this work apart from M. axillaris are endemic to New Zealand.
This table has been sorted into the same order of endemic plants as Table 2.
LSD, Least Significant Difference. Unbracketted means which differ by more than the LSD(5%) are significantly different at P < 0.05.
LSEffect, Least Significant Effect. If a bracketted mean and an unbracketted mean differ by more than the LSEffect(5%), then the two means are significantly different at P < 0.05.
–, means plant species was not sampled.