Table 2. Results of univariate PERMANOVAs comparing fish assemblage structure between forest and barren.
All fish | Crypto-benthic fish | Necto-benthic fish | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Response variable | Source | df | SS | F | SS | F | SS | F | |||
Number of taxa | HA | 1 | 159.6 | 29.50 | *** | 44.3 | 23.00 | *** | 35.8 | 13.72 | ** |
RT | 1 | 65.4 | 12.08 | ** | 26.4 | 13.72 | ** | 8.7 | 3.33 | ° | |
LP(RT) | 2 | 28.1 | 2.60 | ns | 2.1 | 0.54 | ns | 23.1 | 4.44 | * | |
RTxHA | 1 | 1.0 | 0.19 | ns | 3.8 | 1.95 | ns | 0.9 | 0.33 | ns | |
LP(RT)xHA | 2 | 8.4 | 0.77 | ns | 1.2 | 0.31 | ns | 3.3 | 0.63 | ns | |
Residual | 11 | 59.5 | 21.2 | 28.7 | |||||||
Total density | HA | 1 | 492.8 | 39.16 | *** | 420.5 | 34.95 | *** | 2.9 | 39.54 | *** |
RT | 1 | 399.7 | 31.77 | *** | 406.8 | 33.81 | *** | 0.0 | 0.43 | ns | |
LP(RT) | 2 | 19.2 | 0.76 | ns | 12.1 | 0.50 | ns | 1.1 | 7.49 | ** | |
RTxHA | 1 | 203.0 | 16.13 | ** | 223.5 | 18.57 | ** | 0.5 | 6.77 | * | |
LP(RT)xHA | 2 | 8.1 | 0.32 | ns | 5.9 | 0.25 | ns | 0.2 | 1.38 | ns | |
Residual | 11 | 138.4 | 132.7 | 0.8 | |||||||
Pairwise tests Forest vs Barren | Corsica: t = 2.05°; Menorca: t = 5.86** | Corsica: t = 1.50ns; Menorca: t = 5.70 *** | Corsica: t = 5.27**; Menorca: t = 5.51** | ||||||||
Total biomass | HA | 1 | 21.8 | 0.70 | ns | 6.0 | 3.42 | ns | 4.9 | 0.16 | ns |
RT | 1 | 23.5 | 0.76 | ns | 1.1 | 0.62 | ns | 34.7 | 1.11 | ns | |
LP(RT) | 2 | 395.3 | 6.38 | * | 4.9 | 1.38 | ns | 404.5 | 6.48 | * | |
RTxHA | 1 | 130.6 | 4.22 | ° | 1.5 | 0.82 | ns | 104.6 | 3.35 | ° | |
LP(RT)xHA | 2 | 202.1 | 3.26 | ° | 6.6 | 1.88 | ns | 166.7 | 2.67 | ns | |
Residual | 11 | 340.7 | 19.4 | 343.0 |
HA: habitat; RT: region-time; LP: locality-protection.
ns not significant
° p < 0.1
* p < 0.05
** p < 0.01
*** p < 0.001.