Technical Papers

Below you'll find a listing of MAF Biosecurity New Zealand's technical papers.

• Surveillance design for early detection of unwanted exotic marine organisms in New Zealand
• Genetic diversity and possible origins of New Zealand populations of Ulva
• Baseline Surveys for Non-indigenous marine species
• Didymo research reports

Surveillance design for early detection of unwanted exotic marine organisms in New Zealand

This report describes the design and trial of a targeted surveillance programme for seven marine pests that are currently listed on the New Zealand register of Unwanted Organisms under the Biosecurity Act 1993. These are the Asian kelp Undaria pinnatifida, the Mediterranean aquarium weed Caulerpa taxifolia, the Northern Pacific seastar Asterias amurensis, the Mediterranean fanworm Sabells spallanzanii, the European green crab Carcinus maenas, the Chinese mitten crab Eriocheir sinensis, and the Asian clam Potamocorbula amurensis. The Asian kelp U. pinnatifida is already present in New Zealand.

• Surveillance design for early detection of unwanted exotic marine organisms in New Zealand (11901 Kb)

Genetic diversity and possible origins of New Zealand populations of Ulva

The genetic diversity of the green algal genus Ulva sensu lato in New Zealand was surveyed to identify the species present, and to assess their status as native or potentially introduced entities. Data were obtained for 581 samples collected from within the New Zealand EEZ, ranging from the Kermadec Islands to the Auckland and Antipodes Islands. Both pristine and human-modified environments were represented in the sampling sites visited.

This document is available in two versions. The high resolution copy has better quality images. Please be aware that both have a large file size.

• High resolution (44957 Kb)
• Medium resolution (23990 Kb)

Baseline Surveys for Non-indigenous marine species

• Port of Lyttleton (2833 Kb) - This report describes the results of a March 2002 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Lyttleton.
• Port of Nelson (1633 Kb) - This report describes the results of a January 2002 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Nelson.
• Port of Picton (893 Kb) - This report describes the results of a December 2001 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Picton
• Port of Taranaki (1991 Kb) - This report describes the results of a April 2002 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Taranaki.
• Port of Tauranga (2420 Kb) - This report describes the results of a March 2002 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Tauranga.
• Port of Timaru (2137 Kb) - This report describes the results of a February 2002 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Timaru.
• Port of Bluff (2521 Kb) - This report describes the results of a March 2003 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Bluff.
• Port of Auckland (2856 Kb) - This report describes the results of a April 2003 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Auckland.
• Port of Wellington (3249 Kb) - This report describes the results of a December 2001 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Wellington.
• Port of Dunedin Harbour (Port of Otago and Port Chalmers) (3656 Kb) - This report describes the results of a February 2003 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Dunedin (this includes Port Otage, located near the city of Dunedin, and Port Chalmers facility).
• Port of Gisborne (2452 Kb) - This report describes the results of a January 2003 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Gisborne.
• Gulf Harbour Marina (2648 Kb) - This report describes the results of a April 2003 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Gulf Harbour Marina.
• Port of Napier (2323 Kb) - This report describes the results of a January 2003 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Napier.
• Opua Marina (2441 Kb) - This report describes the results of a November 2002 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Opua Marina.
• Whangarei Marina (2153 Kb) - This report describes the results of a November 2002 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Whangarei Town Basin Marina.
• Whangarei Harbour (Whangarei Port and Marsden Point) (3390 Kb) -This report describes the results of a November 2002 survey to provide a baseline inventory of native, non-indigenous and cryptogenic marines species within the Port of Whangarei, located near the city of Whangarei, and shipping terminals at Marsden Point operated by Northport and the New Zealand Refining Company.

Didymo research reports

The overall objective of the science and technical programme is to determine validated information regarding identification, detection, distribution, containment, impact and control/eradication of Didymosphenia geminata (didymo). All reports can be found at the link below:

• Didymo research reports