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

Table 3

Significant differences between saltpans and between ponds for relative abundances of macroinvertebrate groups (one-way ANOVA).

(a) Saltpan related effect

	2000	2001	2002
Corixidae adult	𝐹4,28=440.9, 𝑃<.001	𝐹3,40=6.7, 𝑃<.01
Corixidae nymph	𝐹4,28=2.5, 𝑃<.05	𝐹3,40=6.2, 𝑃<.01
Ephydridae larvae	𝐹4,28=3.1, 𝑃<.05
Ephydridae pupae	𝐹4,28=3.6, 𝑃<.05		𝐹3,40=10.8, 𝑃<.01
Chironomidae larvae		𝐹3,40=2.9, 𝑃<.05
Berosus sp. larvae		𝐹3,40=6.6, 𝑃<.01
Berosus sp. adult		𝐹3,40=3.8, 𝑃<.05
L. rugicauda		𝐹3,40=3.6, 𝑃<.05	𝐹3,40=32.2, 𝑃<.001
P. varians			𝐹2,7=5.3, 𝑃<.05

(b) Pond related effect

	2000	2001	2002
Corixidae nymph	^1𝐹2,6=7.2, 𝑃<.05
Ephydridae pupae		^3𝐹4,9=11.2, 𝑃<.01
Chironomidae larvae	^1𝐹2,4=9.3, 𝑃<.05
Chironomidae pupae	^1𝐹2,4=21.6, 𝑃<.01
Berosus sp. larvae	^1𝐹2,4=5.3, 𝑃<.05
Enochrus sp. adult	^2𝐹2,4=43.0, 𝑃<0.01

Legend: 1Atalaia ponds; 2Vasa-Sacos ponds; 3Vau ponds (VP2, VP3, VP4).