Table 1.
Ranking and model results for evaluation of fishing indicators calculated from RLS surveys around Australia.
| A. Indicator | B. χ2 goodness of fit | C. Significant fishing effects | D. Significant SST effect | Rank |
|---|---|---|---|---|
| Vulnerability Indexa,b | 69.9*** | 3 (MPA, Pop, SF) | –0.87*** | |
| Lmaxb | 58.9*** | 2 (MPA, Pop) | –0.59*** | |
| Vulnerability Indexa,b (B) | 58.3*** | 3 (Pop, BR, SF) | –0.80*** | |
| B20c | 45.6*** | 3 (MPA, Pop, BR) | NS (0.07) | 1 |
| Total Biomassc | 42.8*** | 2 (Pop, BR) | 0.23* | |
| Lmaxb,d (B) | 41.3*** | 2 (MPA, Pop) | –0.33*** | |
| Gamma Scale | 41.2*** | 2 (Pop, SF) | NS (–0.07) | 2 |
| Trophic Levelb,e | 38.3*** | – | –0.30*** | |
| Mean Lengthd | 35.6*** | 2 (Pop, SF) | 0.62*** | |
| Max of Lmaxf | 34.7*** | 2 (MPA, Pop) | NS (0.12) | 3 |
| B303 | 34.6*** | 2 (MPA, Pop) | NS (0.09) | 4 |
| Mean biomass | 32.1*** | 2 (Pop, SF) | –0.49*** | |
| B Exploitedg | 32.0*** | 2 (MPA, Pop) | 0.18* | |
| Proportion pelagich,i | 28.9*** | 1 (MPA) | NS (0.05) | |
| Elasmobrach Bj | 23.7*** | 2 (MPA, Pop) | NS (0.05) | |
| Proportion piscivorousi | 23.3*** | 2 (MPA, Pop) | 0.57*** | |
| Trophic Levele (B) | 21.2*** | – | NS (–0.13) | |
| Proportion B Exploited | 16.5* | 1 (MPA) | NS (0.08) | |
| B spectrum slopef | 16.0* | 2 (Pop, BR) | –0.35*** | |
| Large Fish Index (20 cm)j | 15.9* | 2 (Pop, SF) | –0.52*** | |
| Richness spectra slope | 10.2* | 1 (MPA) | –0.42*** |
Note: Vulnerability, Lmax, and Trophic Level values are calculated as community-weighted means, with the mean index value of members of the community weighted by the log of their abundance (B indicates biomass weighting instead of abundance). The χ2 goodness of fit (column B) is from the likelihood ratio between models with all four fishing pressure variables versus models including environmental variables but no variables related to fishing pressure. The significant individual proxies of fishing pressure for which the trend was in the direction consistent with fishing are shown in column C (MPA, no take versus fished; Pop, human population index; BR, distance from nearest public boat ramp; SF, shore fishing index). Values in column D represent the standardized beta coefficient values for the effect of mean annual sea surface temperature. The final rank is shown for the top four indicators, following the rationale provided in the text. Full details of the modeling process are provided in the supplemental material. aCheung et al. (2005). bFishbase.org. cEdgar et al. (2014). dJennings et al. (1999).ePauly et al. (1998). fShin et al. (2005). gWillis et al. (2003). hRochet and Trenkel (2003). iMethratta and Link (2006). jCury and Christensen (2005). NS means that p > .05. p < .05. **p < .001.