Table 1 Detailed results from simplified causal models

From: Genetic erosion reduces biomass temporal stability in wild fish populations

 

Model A

Model B

Predictor→ Response

χ²(14,42) = 13.71, p value = 0.471

χ²(14,42) = 9.22, p value = 0.817

 

CFI = 1

CFI = 1

 

SRMR = 0.072

SRMR = 0.075

UDG→ BIOM

−0.275 [−0.585; 0.034] / {−1.74 | 0.081}

 

pcBIOM→ BIOM

0.440 [0.083; 0.797] / {2.415 | 0.016}

 

    R²

0.398

 

IGD→ BSTA

 

0.407 [0.119; 0.695] / {2.772 | 0.006}

EG→ BSTA

 

−0.220 [−0.439; −0.001] / {−1.969 | 0.049}

    R²

 

0.251

UDG→ pcBIOM

−0.543 [−0.749; −0.338] / {−5.178 | 0}

 

EG→ pcBIOM

0.298 [0.032; 0.563] / {2.20 | 0.028}

 

    R²

0.427

 

IGD→ pcBSTA

 

0.493 [0.325; 0.662] / {5.746 | 0}

EG→ pcBSTA

 

−0.204 [−0.489; 0.081] / {−1.146 | 0.161}

    R²

 

0.276

UDG→ IGD

0.626 [0.433; 0.820] / {6.341 | 0}

 

BOT→ IGD

−0.339 [−0.576; −0.102] / {−2.804 | 0.005}

 

UDG x BOT→ IGD

−0.186 [−0.346; −0.026] / {−2.276 | 0.023}

 

    R²

0.572

 

EG→ BOT

0.278 [0.006; 0.490] / {2.007 | 0.045}

 

    R²

0.061

 
  1. For each model A (Mean Biomass) and B (Biomass Stability), the table provides absolute fit indices (CFI, SRMR, χ² statistic and associated two-tailed p value), amounts of explained variance (R²) in response variables and estimates of path coefficients with 95% confidence intervals obtained from bootstrap resampling (between square brackets) and associated statistics (z-values | p values, between curly brackets). The significant positive relationship between intraspecific genetic diversity IGD and Biomass stability is highlighted in bold. UDG: Upstream-downstream gradient; EG: Eutrophication gradient; IGD: Intraspecific genetic diversity; BOT: Bottleneck probability; BIOM: Total Biomass; BSTA: Total Biomass Stability; pcBIOM: per capita Mean Biomass; pcBSTA: per capita Mean Biomass Stability.