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Marine Produce Australia: Cone Bay Barramundi Aquaculture ...

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Appendix 1: Video analysis biological community classification scheme<br />

Biota classes Morphological groups Definitions and examples<br />

Other biota<br />

Recorded for<br />

presence/absence only<br />

Microphytobenthos (MPB) Thin film layer (low, medium, high)<br />

Crustose coralline algae (CCA) Encrusting algae<br />

Turfing algae Hair-like algae 20 mm<br />

Seagrass Separated into genus or species<br />

Macroalgae<br />

Small algae Macroalgae 20 mm to 20 cm<br />

Membrane, thin sheets Padina spp., Lobophora spp.<br />

Foliaceous, bushy Caulerpa spp.<br />

Lobed, flattened and rounded Halimeda spp.<br />

Fleshy or ball-like Codium spp.<br />

Canopy algae Macroalgae >20 cm<br />

Flat Ecklonia radiata<br />

Branching Cystophora spp., Sargassum spp., other fucoids<br />

Hard Coral<br />

Branching At least 20 branching (e.g. Seriatopora hystrix)<br />

Digitate Less than 20 branching (e.g. Acroporid digitifera)<br />

Tabular Horizontal flattened plates (e.g. Acroporid hyacinthus)<br />

Encrusting Major portion attached to substrate as a laminar plate (e.g. Poritid vaughani)<br />

Foliose Coral attached at one or more points, leaf-like appearance e.g. Turbinaria spp.)<br />

Massive Solid boulder or mound (e.g. Favites spp.)<br />

Submassive Tends to small columns, knobs or wedges<br />

Soft Coral (BPP) Photosynthetic soft corals (BPP)<br />

Filter feeders<br />

Ahermatypic animals (not defined as BPP)<br />

Soft Coral (non-BPP) Non-photosynthetic soft corals<br />

Sponges Can note morphological groups<br />

Ascidians<br />

Hydroids<br />

Sea whips<br />

Gorgonian fans<br />

Sea pens<br />

Stalked, encrusting, solitary<br />

Bryozoan Foliose, stalked<br />

Anemones<br />

Polychaetes<br />

Tube, solitary<br />

Percent cover classes Cover value Decision rules<br />

>80% 90 no substrate visible<br />

60–80% 70 some substrate is visible<br />

40–60% 50 substrate is clearly visible but biota dominates the image frame<br />

20–40% 30 substrate dominates most of the image frame<br />

10–20% 15 substrate dominates most of the image frame<br />

5–10% 7.5 substrate dominates most of the image frame<br />

1–5% 3 trace densities<br />

0–1% 0.5 no significant macro-biota<br />

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