Council chairman Stephen Woodhead noted many of the activities in a summary accompanying the council's recently released annual report for the financial year ending on June 30.
Other hazards work undertaken by the council included investigating seismic hazards in several parts of Otago, Mr Woodhead said, in a joint statement with council chief executive Peter Bodeker.
A report on the morphology of the South Otago coastline had also been produced.
And research carried out by the council showed Otago rabbits had an average immunity rate of 62% to rabbit haemorrhagic disease (RHD).
This finding arose from taking rabbit serum samples to determine the effectiveness of RHD as a rabbit control tool.
Council environmental monitoring and operations director Scott MacLean said poisoning, particularly with 1080, was the primary tool for culling rabbits.
Mr Woodhead said other pest plant and pest animal work included undertaking property inspections of rabbit populations and plant infestations.
Enforcement action was taken where council Pest Management Plan rules had not been followed.
In April, Mr Bodeker warned dry Otago weather early this year resulted in rabbits ''exceeding normal breeding cycles''in some places.
Mr Woodhead emphasised the need for all landholders, whether large-scale or smaller, to work closely together to cut rabbit numbers.
In the recently released summary, he said that another part of the council's work was the processing of Resource Management Act consent applications, with 354 consent application decisions made during the financial year.
Other work included processing variations to consents, and undertaking monitoring to ensure consent conditions were complied with.
Council staff also helped to keep Otago rivers and waterways free of obstructions, and had continued work on transport planning, and providing public transport services in Dunedin and the Queenstown area, he said.
