76 
Ganl. Bull. Singapore 70 (Suppl. 1) 2018 
Table 1 . Summary of aquatic macroinvertebrates recorded across 40 sites in the Nee Soon 
Swamp Forest stream network. Macro invertebrates identified are presented in respective 
taxonomic structure, with the number of invertebrate taxa (identified at Family level or higher) 
for each order denoted in No. of taxa. Total number of sites (No. of sites recorded) and the 
range of individuals (Individuals recorded/site) where each order was surveyed were also 
presented, along with the site number where the highest number of individual was recorded 
(Site with highest abundance). *In this study, Ostracoda are identified at class-level; Acari, 
Collembola and Oligochaeta are identified at subclass-level; and Araneae are identified at order- 
level. #Within the Decapoda, three taxa were recognised, two families of shrimp (Atyidae and 
Palaemonidae) and one infraorder for crabs (Brachyura). 
Phylum 
Class 
Order 
No. of taxa 
(Family level 
and above) 
No. of 
sites 
recorded 
Individuals 
recorded/ site 
Site with 
highest 
abundance 
Arthropoda 
Insecta 
Coleoptera 
12 
26 
1 - 15 
24 
Diptera 
17 
40 
8- 1316 
32 
Ephemeroptera 
5 
38 
1 - 87 
32 
Hemiptera 
6 
24 
1 - 123 
32 
Lepidoptera 
1 
5 
1-4 
31 
Megaloptera 
2 
6 
1 - 2 
9, 33 
Odonata 
10 
32 
1 - 119 
32 
Plecoptera 
2 
8 
1 - 3 
15 
Trichoptera 
11 
31 
1 - 34 
32 
Entognatha 
Collembola* 
1 
10 
1-4 
24 
Arachnida 
Acari* 
1 
4 
1-4 
31 
Araneae* 
1 
22 
1 - 6 
22 
Malacostraca 
Decapoda # 
3 
34 
1 - 73 
32 
Ostracoda* 
- 
1 
2 
8-225 
32 
Mollusca 
Gastropoda 
Mesogastropoda 
2 
3 
1 - 87 
32 
B asommatophora 
2 
2 
8-29 
32 
Bivalvia 
Veneroida 
2 
1 
127 - 127 
32 
Annelida 
Clitellata 
Arhyncobdellida 
1 
1 
1 
11 
Rhynchobdellida 
1 
1 
1 
32 
Oligochaeta* 
1 
24 
1 - 50 
29 
common dipteran families included Ceratopogonidae and Simuliidae, which were 
recorded at sites 33 and 15, respectively (Table 2). Diptera were found in relatively 
high numbers throughout the entire drainage (Table 1), but the abundance is not as 
high as other sites in Singapore (e.g. Clews et al., 2014). Diptera were most abundant 
