Info

Oregon. 770 Beggiatoa mat

Hydrate Ridge

TV MUC 8869 46.9

Comparison with

Dominant taxa Diversity non-seep Remarks References

Pogonophorans, amphipods, bivalves

Densities higher than non-seep

Levin, unpublished data

Ampharetidae, bivalves, gastropods

Oligochaetes, Dorvilleidae, gastropods

Dorvilleidae, Gastropoda (Astyris permodesta, Provarma sp.)

Acharax sp., Orbiniidae

Ampharetidae, Gastropoda {Hyalogyriria sp.), Calyptogena pacifica, Vesicomya sternsii

Ampharetidae, Gastropoda (Hyalogyriria sp., Provarma laevis)

Densities similar to non-seep

Enhanced densities relative to non-seep

Rarefaction value.

(extrapolated)

Similar diversity to reference sites

Intermediate diversity

Lower diversity than non-seep sites

Oxygen 0.4-0.5 ml L1

Oxygen 0.4-0.5 ml L1

Levin, unpublished data

Levin, unpublished data

Levin, unpublished data

Sahling et al. 2002

Sahling et al. 2002

Oxygen 0.4-0.5 ml L1

Sahling et al. 2002

Table 3 (continued) Characteristics of seep macrofaunal communities

Location

Depth

(m) Habitat type

Methods Density Biomass

Northern California (Eel River)

Northern California (Eel River)

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