Operational Report for Ship Rat, Stoat Control in the Te Maruia 29 Sep 2014
Total Page:16
File Type:pdf, Size:1020Kb
EPA Report: Verified Source: Pestlink Operational Report for Ship rat, Stoat Control in the Te Maruia 29 Sep 2014 - 23 Oct 2014 17/03/2015 Department of Conservation Greymouth - Mawheranui Contents 1. Operation Summary .............................................................................................................. 2 2. Introduction ........................................................................................................................... 3 2.1 TREATMENT AREA ....................................................................................................... 3 2.2 MANAGEMENT HISTORY .......................................................................................... 5 3 Outcomes and Targets .......................................................................................................... 5 3.1 CONSERVATION OUTCOMES ................................................................................... 5 3.2 TARGETS ........................................................................................................................ 5 3.2.1 Result Targets ........................................................................................................... 5 3.2.2 Outcome Targets ...................................................................................................... 6 4 Consultation, Consents & Notifications ............................................................................... 6 4.1 CONSULTATION .......................................................................................................... 6 4.2 CONSENTS ..................................................................................................................... 6 4.3 NOTIFICATION ............................................................................................................ 7 5 Methods .................................................................................................................................. 7 5.1 TARGET SPECIES .......................................................................................................... 7 5.2 ENVIRONMENTAL EFFECTS ................................................................................... 10 5.2.1 Effects on Non-Target Species .............................................................................. 10 5.2.2 Effects on Soil and Water Quality ......................................................................... 11 5.2.3 Effects on Ecosystems ............................................................................................ 11 5.2.4 Effects on Human Health ...................................................................................... 11 6 Monitoring Results and Outcomes .................................................................................... 11 6.1 RESULT MONITORING - TARGET SPECIES ........................................................... 11 6.2 RESULT MONITORING - ENVIRONMENTAL EFFECTS ...................................... 12 6.3 OUTCOME MONITORING ........................................................................................ 12 1. Operation Summary Operation Name Ship rat, Stoat Control in Te Maruia Operation Date 29 Sep 2014 - 23 Oct 2014 Greymouth - Office: Region: Northern and Western South Island Mawheranui Pestlink Reference 1314GRY03 Treatment Area Size (ha) Te Maruia 78301.00 Conservation Unit Name(s) GA Id(s) Victoria Conservation Area 2793000 Lewis Pass Scenic Reserve 2799171 Lewis Pass National Reserve 2799172 Unnamed scenic reserve - Maruia Springs 2799174 Station Creek Ecological Area 2799322 Nelson Lakes National Park 2803471 Conservation Area - Granville Forest 2807465 Mount Harata Ecological Area 2807466 Conservation Area - Palmer Road 2807470 Conservation Area - Upper Grey River 2807474 Rahu Scenic Reserve 2807476 Scenic Reserve - Station Creek 2807912 Victoria Forest Park 2807926 Treatment Block Details Treatment Blocks Size (ha) Te Maruia North 42823.00 Te Maruia South 35478.00 Contractor Name Andersons & Central South Island Helicopters Treatment Dates Start Completion Te Maruia North 29 Sep 2014 23 Oct 2014 Te Maruia South 29 Sep 2014 13 Oct 2014 Target Pest Details Target Treatment Blocks Control Method Name Pests Te Maruia North Ship rat Pesticide Aerial Pesticide - Aerial in Te Maruia North-(1) Te Maruia South Ship rat, Pesticide Aerial Pesticide - Aerial in Te Maruia Pestlink Ref: 1314GRY03 Page 2 of 13 Date Printed: 19 Mar 2015 Stoat South-(2) Conservation Outcome(s) Maintain low rat densities throughout the operation area during a beech mast which saw rat density increase dramatically. This is to provide protection to vulnerable native bird and bat species during their breeding season, allowing them to successfully fledge their young. This operation is expected to control Possums as a by catch and will help maintain the already low possum densities protecting vulnerable plant species in the area. Result Target(s) Treatment Area/Block What we got • Maintain rat Te Maruia 41% RTI densities to < 5% tracking tunnel index during the native bird and bat breeding season. Maintain possum densities to < 5% RTCI. Outcome Targets What we got • Maintain predator densities to levels that allow Not currently available long-tailed bat populations to stay stable or increase • Maintain predator densities to levels that allow not yet available long-tailed bat populations to stay stable or increase 2. Introduction 2.1 TREATMENT AREA Non-target species Common Name Scientific Name South Island Kaka, bush Nestor meridionalis parrot, brown parrot, kawkaw meridionalis Chalinolobus tuberculatus Long-tailed bat (South Island) (South Island) Blue duck, Whio, mountain Hymenolaimus duck, blue mountain duck malacorhynchos Yellow-crowned Parakeet, Cyanoramphus auriceps Kakariki Pestlink Ref: 1314GRY03 Page 3 of 13 Date Printed: 19 Mar 2015 Red-crowned Parakeet, red- Cyanoramphus headed parakeet, Kakariki, novaezelandiae kakariki, kaka-wairiki, novaezelandiae kawariki, porete, powha Mohua, Yellowhead, bush Mohoua ochrocephala canary, mohoua, houa South Island Robin, Toutouwai, kakaruai, Petroica australis australis kakariwai Tomtit Petroica macrocephala Bush falcon, Karearea Falco novaeseelandiae "bush" Target benefit species Common Name Scientific Name Mohua, Yellowhead, bush Mohoua ochrocephala canary, mohoua, houa South Island Kaka, bush Nestor meridionalis parrot, brown parrot, kawkaw meridionalis Chalinolobus tuberculatus Long-tailed bat (South Island) (South Island) Threatened species Common Name Scientific Name Blue duck, Whio, mountain Hymenolaimus duck, blue mountain duck malacorhynchos Chalinolobus tuberculatus Long-tailed bat (South Island) (South Island) South Island Kaka, bush Nestor meridionalis parrot, brown parrot, kawkaw meridionalis Mohua, Yellowhead, bush Mohoua ochrocephala canary, mohoua, houa Bush falcon, Karearea Falco novaeseelandiae "bush" Kea Nestor notabilis Geographical location The Te Maruia is situated 3 km South of Springs Junction. TREATMENT BLOCK DETAILS: Treatment block Te Maruia North Vegetation type Predominantly Red and Silver Beech forest. Bioclimatic zone sub-montane Climate characteristics: Rainfall 2439 mm Temperature: Average Summer 15.0 Average Winter 4.4 Snow level 1300 m Pestlink Ref: 1314GRY03 Page 4 of 13 Date Printed: 19 Mar 2015 Altitude 470-1300 m Station creek provides access to private land located at the head of the catchment. Lake Daniell is regarded as an important self sustaining Rainbow Trout fishery by Nelson Marlborough Fish Community and Iwi and Game. The numerous old forestry roads in the Station Creek interests area are used by hunters. Tramping tracks within the operational area include Lake Daniell, Klondyke Trail, Lake Stream, Duffy Creek. Historic route used by Maori between the East Coast and West Historic sites Coast. Treatment block Te Maruia South Predominantly Red and Silver beech with sub-alpine vegetation Vegetation type above the bush line. Bioclimatic zone sub-montane Climate characteristics: Rainfall 2439 mm Temperature: Average Summer 15.0 Average Winter 4.4 Snow level 1300 m Altitude 470-1800 m Lake Christabel tramping track and Mount Haast and Rough Community and Iwi Creek tracks. Hunting, tramping and fishing are popular within interests the area. Historic sites - 2.2 MANAGEMENT HISTORY Management history was not chosen to be shown in this operational report. This history is, however, available via Pestlink 3 Outcomes and Targets 3.1 CONSERVATION OUTCOMES Maintain low rat densities throughout the operation area during a beech mast which saw rat density increase dramatically. This is to provide protection to vulnerable native bird and bat species during their breeding season, allowing them to successfully fledge their young. This operation is expected to control Possums as a by catch and will help maintain the already low possum densities protecting vulnerable plant species in the area. 3.2 TARGETS 3.2.1 Result Targets The result targets for the treatment area were: • Maintain rat densities to < 5% tracking tunnel index during the native bird and bat Pestlink Ref: 1314GRY03 Page 5 of 13 Date Printed: 19 Mar 2015 breeding season. Maintain possum densities to < 5% RTCI. 3.2.2 Outcome Targets The outcome targets for the treatment area were: • Maintain predator densities to levels that allow long-tailed bat populations to stay stable or increase 4 Consultation, Consents & Notifications 4.1 CONSULTATION Consultation commenced in May 2014 when all immediately adjacent landowners were