Structural Changes in Macroinvertebrate Communities Associated with Reduction in the Management of Coastal Saltpans

Table 4

Significant Pearson correlation coefficients𝑟(Pearson 𝑟,𝑃<.05) between total abundance, total biomass, diversity indices, and percentage of organic matter in macroinvertebrate communities.

	Total abundance	Total biomass (dry weigh)
Total abundance	—	𝑟=0.70,𝑃<.001
Species richness	𝑟=−0.40,𝑃<.05	𝑟=−0.39,𝑃<.05
Margalef index	𝑟=−0.53,𝑃<.01	𝑟=−0.48,𝑃<.01
Shannon-Wienner	𝑟=−0.69,𝑃<.001	𝑟=−0.46,𝑃<.05
Pielou’s eveness	𝑟=−0.59,𝑃<.01	n.s.
Simpson’s index	𝑟=−0.70,𝑃<.001	𝑟=−0.45,𝑃<.05
OM in macroinvertebrates (%)	𝑟=0.88,𝑃<.001	𝑟=0.70,𝑃<.001

n.s. : nonsignificant.