Impact of vehicles on recruitment of toheroa on Oreti Beach, Southland, New Zealand A report to Te Ao Mārama, Environment Southland, Invercargill City Council and Department of Conservation Ecosystems Consultants Report Number 2014/02 December 2014 Suggested citation for this report: Moller JA, Garden C, Moller SI, Beentjes M, Skerrett M, Scott D, Stirling FF, Moller JS, Moller H (2014). Impact of vehicles on recruitment of toheroa on Oreti Beach. Ecosystems Consultants Report 2014/2. [Online at: http://www.ecosystemsconsultants.co.nz/project/conserving-a-taonga-species- and-recreation ]. This report was produced by: Ecosystems Consultants Ltd 30 Warden St Opoho, Dunedin 9010 New Zealand www.ecosystemsconsultants.co.nz Email:
[email protected] Cover photo credits: Ashli Akins, Darren Scott, Henrik Mouritson, Lonna Lisa Williams Author affiliations: Jens A. Moller, Soren I. Moller, Fiona F. Stirling, Julian S. Moller & Henrik Moller: Ecosystems Consultants Ltd., 30 Warden St., Opoho, Dunedin. www.ecosystemsconsultants.co.nz Darren Scott: Forty Mill Ltd., 11 Awarua Road, Otatara RD 9, Invercargill. Chris Garden: Research Consultant, www.gisconsultant.co.nz Mike P. Beentjes: NIWA, PO Box 6414, Dunedin. Michael Skerrett: Te Ao Mārama, PO Box 7017, Invercargill. ii Executive Summary The Oreti Beach population of toheroa are of national conservation importance because of their outlying and limited distribution, long-term declines of both northern and southern populations, general degradation of marine ecosystem health, and the importance of toheroa as a customary food of Māori. Crushing of juveniles by vehicle traffic has been mooted as a potential threat to toheroa recruitment, but reliable scientific measures of its putative importance are lacking.