Table 2. Details of all Dufrêne-Legendre Indices within each fish assemblage at all 14 nodes of the tree in Figure 5 are shown with the DLI in brackets.
| Assemblage | Nsites | N DLI | Dufrêne-Legendre Indices (DLI) | Richness Range (Mean ± std dev.) | Abundance Range (Mean ± std dev.) |
|---|---|---|---|---|---|
| All (root node) | 188 | 3 | Pseudocaranx dentex (57), Myliobatis australis (39), Upeneichthys vlamingii (35) | ||
| Inter-reef | 118 | 1 | Parequula melbournensis (42) | ||
| Sandy, sparse epibenthos | 88 | 2 | Nelusetta ayraudi (47), Parapercis ramsayi (9) | ||
| Sandy, non-reef | 79 | 1 | Platycephalus speculator (29) | ||
| Eastern, sandy, non-reef (sparse vegetation) | 56 | 3 | Bodianus sp (7), Meuschenia scaber (4), Oplegnathus woodwardi (4) | 1-17 (4.7 ± 3.1) | 2-77 (16.9 ± 16.3) |
| Western, sandy, non-reef (sparse vegetation) | 23 | 5 | Dasyatis brevicaudata (22), Sphyrna zygaena (9), Sillago sp (7), Sardinops neopilchardus (4), Callionymus sp (3) | 2-11 (5.8 ± 2.3) | 8-60 (25.5 ± 16.1) |
| Sandy reef (sparse vegetation, inundated with sand) | 9 | 5 | Mustelus antarcticus (14), Trygonorrhina fasciata (12), Hypogaleus hyugaensis (11), Seriola hippos (9), Parascyllium variolatum (9) | 6-17 (9.6 ± 3.2) | 9-49 (27.3 ± 12.3) |
| Seagrass | 30 | 3 | Scobinichthys granulatus (73), Acanthaluteres vittiger (57), Meuschenia venusta (7) | ||
| Deep seagrass | 8 | 3 | Scomber australasicus (12), Galeorhinus galeus (10), Contusus brevicaudus (6) | 4-10 (7 ± 2.1) | 15-52 (25.9 ± 11.7) |
| Shallow, western seagrass | 10 | 4 | Pelsartia humeralis (90), Trachurus novaezelandiae (56), Acanthaluteres spilomelanurus (32), Sphyraena novaehollandiae (20) | 4-9 (7 ± 1.7) | 23-77 (46.6 ± 18.8) |
| Shallow, eastern seagrass | 12 | 8 | Pictilabrus laticlavius (18), Dotalabrus aurantiacus (14), Odax sp (8), Arripis georgianus (7), Acanthistius serratus (6), Odax acroptilus (6), Pictilabrus brauni (6), Pentaceropsis recurvirostris (5) | 3-19 (8.8 ± 4.8) | 5-149 (28.4 ± 39.5) |
| Algal Reef | 70 | 30 | Ophthalmolepis lineolatus (76), Pseudolabrus biserialis (74), Notolabrus parilus (69), Nemadactylus valenciennesi (61), Meuschenia hippocrepis (61), Meuschenia galii (61), Achoerodus gouldii (53), Meuschenia flavolineata (44), Neatypus obliquus (40), Scorpis aequipinnis (35), Girella tephraeops (34), Kyphosus sydneyanus (31), Cheilodactylus nigripes (31), Chromis klunzingeri (28), Bodianus frenchii (26), Scorpis georgiana (26), Coris auricularis (24),Tilodon sexfasciatus (22), Dinolestes lewini (22), Centroberyx lineatus (19), Othos dentex (18), Parma victoriae (17), Girella zebra (10), Callanthias allporti (10), Pempheris klunzingeri (10), Centroberyx gerrardi (9), Dactylophora nigricans (4), Chelmonops curiosus (4), Trygonoptera ovalis (3), Pempheris multiradiata (3) | ||
| Reef, “medium” cover of algal macrophytes | 28 | 10 | Austrolabrus maculatus (30), Hypoplectrodes nigroruber (15), Caesioperca rasor (15), Epinephelides armatus (13), Neosebastes bougainvillii (7), Aulopus purpurissatus (6), Anoplocapros lenticularis (4), Eupetrichthys angustipes (4), Parascyllium ferrugineum (4), Thyrsites atun (3) | 5-25 (14.2 ± 5.2) | 13-125 (46.3 ± 25.5) |
| Reef, “dense” cover of algal macrophytes | 42 | 12 | Odax cyanomelas (39), Parma mccullochi (10), Heterodontus portusjacksoni (5), Acanthaluteres brownii (5), Meuschenia freycineti (5), Enoplosus armatus (5), Trachinops noarlungae (2), Chironemus georgianus (2), Arripis truttaceus (2), Threpterius maculosus (2), Diodon nicthemerus (2), Sarda orientalis (2) | 4-25 (14.3 ± 4.9) | 9-177 (49.6 ± 31.9) |
Summaries of mean, standard deviation and range of richness and abundance are given for the eight fish assemblages represented by terminal nodes in Figure 5. For a given species and a given group of sites, the DLI is defined as the product of the mean species abundance occurring in the group divided by the sum of the mean abundances in all other groups (specificity), times the proportion of sites within the group where the species occurs (fidelity), multiplied by 100. The higher the DLI value, the more ‘indicative’ the species is of a specific group of sites.