New Zealand Journal of Marine and Freshwater Research abstracts

---

Cadmium, lead, copper, and zinc in Elminius modestus Darwin (Crustacea, Cirripedia) from Waitemata and Manukau Harbours, Auckland, New Zealand

G.-P. ZAUKE

Carl von Ossietzky Universita't Oldenburg
FB Biologie (ICBM)
Postfach2503
D-2900 Oldenburg, Germany

J. HARMS

Biologische Anstalt Helgoland D-2192 Helgoland, Germany

B.A.FOSTERf

University of Auckland Private Bag, Auckland, New Zealand
tin memoriam B. A. Foster who died on 25 June 1992

Abstract Concentrations of cadmium (Cd), lead (Pb), copper (Cu), and zinc (Zn) were measured in adult barnacles (Elminius modestus Darwin) from Waitemata and Manukau Harbours in the Auckland area, New Zealand. As in studies on sediments reported in the literature, it was possible to identify areas of likely anthropogenic influence, e.g., around the Auckland Harbour Bridge for Pb, Cu, and Zn. Groups of individuals with highest concentrations for these metals showed 19.8-23.8 mg Pb kg-¹,198-266 mg Cu kg-¹, and 4460-6530 mg Zn kg-¹ (95% confidence limits, dry weight basis). Cd concentrations found for all barnacles from the Auckland area ranged from 0.8 to 3.1 mg kg"¹. Two samples from Omaha Beach, 60 km north of Auckland, were used as a reference. Accordingly, groups of individuals with lowest concentrations for Pb, Cu, and Zn could be allocated to this site using the Student-Newman-Keuls Multiple Range Test (0.5-1.3 mg Pb kg-¹,8-10 mg Cu kg"¹, and 144-214 mg Zn kg-¹; 95% confidence limits). Only Cd concentrations were highest at Omaha Beach (8.6-12.1 mg Cd kg-¹). This result may have arisen from "naturally" increased bio-availabilities of certain metals in mangrove systems which are reported in the literature. Generally, metal concentrations in barnacles from the Auckland Harbour area and from Omaha Beach were within the wider range for E. modestus as well as other barnacle species reported in the international literature.

Keywords heavy metals; biomonitoring; Cirripedia; Elminius modestus

New Zealand Journal of Marine and Freshwater Research, 1992, Vol. New Zealand Journal of Marine and Freshwater Research Vol. 26:405-415; The Royal Society of New Zealand 1992 Received 23 May 1991; accepted 22 September 1992

PDF file of entire paper: medium quality (893K); (scanned from paper original: notes about this process)

---

This year's abstracts | Journal home page | All abstracts | Publishing home page