translocation

A two-phase translocation of Hamilton's frog (Leiopelma hamiltoni) into Zealandia Ecosanctuary Te Māra a Tāne, in Wellington, was the first attempt to restore the species to the mainland. All non-native mammals had been eradicated there, but house mice (Mus musculus) re-invaded, providing an opportunity to investigate their impact on L. hamiltoni. In Phase I, 60 frogs were translocated into mouse-proof enclosures over 2006–2007.

Amphibians are considered susceptible to a range of potential effects generated by climate change. We applied species distribution model (SDM) techniques to predict future areas of climatic suitability for Archey’s and Hochstetter’s frogs under two different climate change scenarios using climate variables derived from their existing geographic extent. For Hamilton’s frog their current range was too restricted to model future range, so we used past climate data from current strongholds to establish that these sites may not be suitable for this species in the long-term.

New Zealand’s original forested landscape has been greatly fragmented since human arrival, limiting connectivity and habitat quality for forest-dependent fauna. We review the limited available information about forest bird movement behaviour, especially whole-year sociality and movement, natal dispersal, and pasture- and water-gap crossing. Most small insectivores (17 species) and North Island kōkako are territorial year-round, but frugivore-nectivores (three species), raptors (two species), and volant parrots (four species) can be highly mobile, presumably to find scattered food.

Temporary penning prior to release is a strategy increasingly being used in lizard translocations to improve site fidelity and increase chances of translocation success. However, it is yet to be tested on a range of lizard taxa. Between 2015 and 2018, 49 individuals of a New Zealand endemic arboreal gecko species (ngahere gecko, Mokopirirakau “southern North Island”) were translocated to mammal-free Mana Island near Wellington as mitigation for a development project.

Globally, translocations of herpetofauna have been notoriously unsuccessful. Most previous translocations of green geckos (Naultinus spp.) have failed to result in population establishment. However, recent penned releases of jewelled geckos (moko kākāriki; Naultinus gemmeus) have led to increased site fidelity, reduced dispersal, reduced home range sizes, and reduced minimum daily movements, facilitating population establishment.

Kei Aotearoa nei kua roa noa atu ngā tāngata taketake e noho matapopore ana ki o rātou whenua, maunga, moana, roto, awa, kūkūwai me ērā atu pūnaha hauropi wai Māori hoki. I te tau 2017 i tīmatahia e Te Māra a Tāne he kaupapa haere-kōtui i te taha o te iwi manawhenua a Taranaki Whānui ki te Upoko o te Ika, me ētahi atu hoa haere-kōtui hoki, me kore ake pea ka whakahoungia te hauropi wai Māori, ngahere hoki o te awa Kaiwharawhara me tōna rohenga wai. Ko tēnei te rohenga wai tino nui rawa i roto i te taone matua o Te Whanganui-a-Tara, ā, he mea kairangi tonu ki te iwi, ki te ao hauropi hoki.

Human-induced reductions in species’ ranges have resulted in the geographic separation of some previously sympatric species that interacted historically. Some previously co-occurring species are now being reconnected via translocation. However, interactions between these species can be difficult to predict, particularly in extreme instances where all populations of previously co-occurring species have become completely separated from each other.

Supplementary feeding has proven to be a successful conservation tool for many species, including New Zealand’s hihi (stitchbird, Notiomystis cincta). Previous research has shown supplementary feeding to substantially increase hihi reproductive success at regenerating forest sites, but suggested that it would have reduced benefit in mature forest habitat. Here we report the first direct test of the effect of supplementary feeding on hihi reproductive success in mature forest, using data from the recently reintroduced population at Maungatautari Ecological Island.

Avian malaria, caused by Plasmodium spp., has been reported as a cause of morbidity and mortality in New Zealand bird populations. The prevalence of Plasmodium lineages in the Waimarino Forest was evaluated in NZ robins (Petroica longipes), other passerines, blue ducks (Hymenolaimus malacorhynchos), and brown kiwi (Apteryx mantelli), using nested PCR. The presence of P. sp. lineage LINN1, P. (Huffia) elongatum lineage GRW06 and P. (Novyella) sp.

Tiritiri Matangi Island is one of the oldest community-driven island restoration projects in New Zealand. While great effort has been directed towards recovery of vegetation and avian communities since the 1980s, restoration of the island’s reptile fauna has not been initiated until early 2000s. Tiritiri Matangi supports only three remnant reptile species, which is considerably low given the island’s size and geographic location. In recognition of this and the importance of reptiles in ecosystem function, translocations of several reptile species have been undertaken.