Application 124771 - Ministry of Fisheries
Application 124771 - Ministry of Fisheries Application 124771 - Ministry of Fisheries
CAWTHRON INSTITUTE | REPORT NO. 2134 MAY 2012 Control 2 Control 2 Transform: Fourth root Resemblance: S17 Bray Curtis similarity Control 2Control 6 Control 5 Farm 2 Farm 1 Control 6 Control 1 Control 4 Farm 2 Control Control 1 1 Control 4 Farm 1 Farm 4 Control 4 Farm Farm 1 6 Farm 7 Control 5 Farm 3 Control 3 Farm 6 Farm 3 Farm 7 Farm 8 Farm 8 Control 3 Farm Farm 3 7 Farm 4 Farm 5 Control 5 Farm 5 Farm 2 Farm 6 Farm 8 Control 3 Farm 5 Farm 4 Control 6 2D Stress: 0.22 Grouping Control North Control South Farm North Farm South Similarity 35 Figure 6. MDS (Multidimensional scaling) plot of similarity of infauna communities between control and farm sites to the north and south of Coromandel Harbour. Circles in the MDS plot show 35% similarity (see Appendix 1 for full Simper analysis). The epifauna communities from grab samples were similar at farm and control sites (Table 1) and were also indicative of a mildly enriched benthic environment. Opportunistic species such as amphipods, cumaceans and crabs were present at most sites in similar abundances. The slipper shell snail (Sigapatella novaezelandiae), however, was only found at the most northern control site (Con 1), while the anemone (Anthopleura aureoradiata), and the mussel pea crab (Pinnotheres novaezelandiae), were only found on mussel shell deposits beneath reference farm sites. 13
CAWTHRON INSTITUTE | REPORT NO. 2134 MAY 2012 Table 1. Average and relative abundances (%) of the 10 most common infauna and epifauna taxa collected from grab samples within six control and eight reference farm sites in Coromandel (See Appendix 4 for full species list). Con Con Con Con Con Con Rel. 1 2 3 4 5 6 Av. abund. Taxa INFAUNA Common Name Nth Nth Nth Sth Sth Sth Farm1 Farm2 Farm3 Farm4 Farm5 Farm6 Farm7 Farm8 abund. (%) Heteromastus filiformis Polychaete worm 13 1 2 14 3 1 2 41 4 12 8 5 3 3 10 13 Prionospio multicristata Polychaete worm 14 10 15 8 3 4 4 76 1 1 15 11 Theora lubrica Window Shell 1 1 2 4 4 4 7 15 18 6 3 16 11 6 7 9 Prionospio yuriel Polychaete worm 3 2 3 1 1 3 3 22 18 4 2 10 8 7 9 Sphaerosyllis sp. Polychaete worm 23 8 1 6 24 2 4 1 5 2 9 7 Ophiuroidea Brittle stars 12 1 2 3 4 10 5 3 2 5 4 Armandia maculata Polychaete worm 4 1 8 6 7 2 2 16 3 3 6 4 Sigalionidae Polychaete worm 2 1 2 2 3 3 3 4 5 3 3 2 5 2 3 4 Oligochaeta Oligochaete worms 1 1 5 3 4 1 2 18 5 3 Cirratulidae EPIFAUNA Polychaete worm 2 2 2 1 1 3 15 2 3 4 1 6 2 3 3 Phoxocephalidae Amphipod (family) 3 2 4 12 14 38 16 25 2 108 3 5 21 33 Decapoda (larvae unid.) UI Crab Larvae 99 1 66 13 Cumacea Cumaceans 4 2 1 2 2 2 2 4 3 1 1 42 3 2 6 9 Melitidae Amphipod 19 1 1 38 1 2 2 2 3 3 10 2 5 7 Sigapatella novaezelandiae Slipper shell snail 57 57 4 Petrolisthes elongatus Half crab 1 1 7 3 1 2 1 1 9 3 3 Aoridae Amphipod (Family) 4 3 3 1 14 2 4 2 Anthopleura aureoradiata Anemone 3 2 16 9 2 Pinnotheres novaezelandiae Mussel Pea Crab 14 14 2 Philine auriformis White Sea Slug 3 2 1 2 2 1 2 3 1 2 2 Average # of Individuals 151 22 21 95 22 16 108 223 105 77 81 228 65 50 Average # of Taxa 33 16 11 24 12 10 28 27 23 16 23 28 20 16 Pielou’s Evenness 0.89 0.95 0.92 0.73 0.94 0.97 0.89 0.75 0.79 0.73 0.88 0.77 0.88 0.80 Shannon Wiener Diversity 2.90 2.61 2.15 2.27 2.28 2.22 2.89 2.21 2.46 1.93 2.68 2.36 2.63 2.20 14
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- Page 70 and 71: 4 marine farm (which expires on 1 J
CAWTHRON INSTITUTE | REPORT NO. 2134 MAY 2012<br />
Control 2<br />
Control 2<br />
Transform: Fourth root<br />
Resemblance: S17 Bray Curtis similarity<br />
Control 2Control<br />
6<br />
Control 5<br />
Farm 2 Farm 1<br />
Control 6<br />
Control 1<br />
Control 4<br />
Farm 2 Control<br />
Control<br />
1<br />
1<br />
Control 4<br />
Farm 1 Farm 4<br />
Control 4<br />
Farm Farm 1 6 Farm 7 Control 5<br />
Farm 3 Control 3<br />
Farm 6 Farm 3 Farm 7<br />
Farm 8 Farm 8 Control 3<br />
Farm<br />
Farm<br />
3<br />
7<br />
Farm 4<br />
Farm 5<br />
Control 5<br />
Farm 5 Farm 2<br />
Farm 6<br />
Farm 8 Control 3<br />
Farm 5<br />
Farm 4<br />
Control 6<br />
2D Stress: 0.22<br />
Grouping<br />
Control North<br />
Control South<br />
Farm North<br />
Farm South<br />
Similarity<br />
35<br />
Figure 6. MDS (Multidimensional scaling) plot <strong>of</strong> similarity <strong>of</strong> infauna communities between control<br />
and farm sites to the north and south <strong>of</strong> Coromandel Harbour. Circles in the MDS plot<br />
show 35% similarity (see Appendix 1 for full Simper analysis).<br />
The epifauna communities from grab samples were similar at farm and control sites<br />
(Table 1) and were also indicative <strong>of</strong> a mildly enriched benthic environment.<br />
Opportunistic species such as amphipods, cumaceans and crabs were present at<br />
most sites in similar abundances. The slipper shell snail (Sigapatella novaezelandiae),<br />
however, was only found at the most northern control site (Con 1), while the anemone<br />
(Anthopleura aureoradiata), and the mussel pea crab (Pinnotheres novaezelandiae),<br />
were only found on mussel shell deposits beneath reference farm sites.<br />
13