View of Pauatahanui Inlet from Motukaraka Point
Home
GUARDIANS OF PAUATAHANUI INLET
 

Cockle Survey Information

Analysis of faunal material from an archaeological site at Pauatahanui Inlet near Wellington

B.F.Leach, J.M.Davidson, K.J. Miller, K. Greig and R. Wallace

ABSTRACT

A small excavation was conducted by the New Zealand Historic Places Trust in an archaeological site (R27/24) on the shore of the Pauatahanui Inlet. The site was scheduled for destruction during road widening. Bulk midden samples from four areas of the site were analysed at the Archaeozoology Laboratory of the Museum of New Zealand.

The samples were mainly composed of shell, with 74% cockle (Austrovenus stutchburyi), which is by far the dominant shore animal in today’s Inlet ecosystem. Mud snail (Amphibola crenata) at 18.4% and blue mussel (Mytilus galloprovincialis) at 2.8% were the next most numerous species. Most of the shellfish species in the midden are commonly found in the Inlet, but some prefer a rocky shore or ocean beach environment. This suggests that the occupants of the site were also exploiting environments outside the Inlet.

Measurement of intact cockle valves showed some variation in mean cockle size between the areas sampled. However, these variations are very slight compared with the difference in size between the archaeological samples and the modern cockle populations in the Inlet. Surveys carried out by the Oceanographic Institute in 1976 and by the Guardians of the Pauatahanui Inlet in conjunction with NIWA in 1992, 1995 and 1998 also showed slight variation in mean size from one study to another. However there is a huge difference in the mean size of the archaeological and modern samples; the majority of the archaeological shells are larger than any in the modern surveys. A difference of this size cannot be explained by the suggestion that Maori were gathering only larger shellfish.

The samples contained only small amounts of bone. Minimum numbers of 14 fish from 7 families, 14 birds of 8 species, 8 rats and 1 dog were identified. The birds are predominantly forest dwelling species, with one duck and one sea bird. The rat is the Pacific rat, Rattus exulans, introduced to New Zealand in pre-European times.
Charcoal analysis showed that the vegetation in the vicinity of the site during occupation consisted largely of coastal scrub dominated by kanuka (Kunzea ericoides), suggesting regeneration after earlier clearance of forest by fire.
Five artefacts were found. Radiocarbon dates suggest occupation during the fifteenth and sixteenth centuries AD.

(The authors would like to note that this abstract is just part of a draft report and the final version may be a little different)

 

Last updated: Sunday, August 22, 2004