Research Article

Effects of Mangrove Zonation and the Physicochemical Parameters of Soil on the Distribution of Macrobenthic Fauna in Kadolkele Mangrove Forest, a Tropical Mangrove Forest in Sri Lanka

Table 5

The total and relative abundance of the epifaunal taxa recorded from the 3 mangrove zones in Kadolkele mangrove forest ( = 12 quadrate samples from each mangrove zone).

Total abundance in each zone
PhylumGenus/speciesRelative abundance (%) in parenthesisTotal abundance (3 zones)Relative abundance (%)
Rhizophora zoneAvicennia zoneLumnitzera zone

MolluscaCassidula nucleus
(nucleus Cassidula snail)
784 (69.81)0 (0.00)0 (0.00)78436.88
Melampus fasciatus
(banded melampus snail)
50 (4.45)0 (0.00)0 (0.00)502.35

ArthropodaClibanarius longitarsus
(hermit crab)
17 (1.51)0 (0.00)0 (0.00)170.80
Episesarma versicolor
(violet vinegar crab)
22 (1.96)52 (20.23)0 (0.00)743.48
Sesarma guttatum 18 (1.60)0 (0.00)572 (76.68)59027.75
Unidentified crab species22 (1.97)0 (0.00)0 (0.00)221.03
Sesarma smithii 0 (0.00)83 (32.3)0 (0.00)833.91
Oecophylla smaragdina (dimiya)49 (4.36)0 (0.00)0 (0.00)492.30
Paratrechina longicornis
(black ant)
26 (2.32)116 (45.14)11 (1.47)1537.20
Solenopsis geminata
(Red tropical fire ant)
133 (11.84)5 (1.94)162 (21.72)30014.11
Tetragnatha viridorufa
(common long jawed orb weaver)
2 (0.18)1 (0.39)1 (0.13)40.19

Species richness1053

Total abundance of epifauna11232577462126100