Graeme Taylor

Graeme Taylor
New Zealand Department of Conservation · Biodiversity Group

Master of Science (Zoology)

About

159
Publications
24,942
Reads
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2,440
Citations
Additional affiliations
July 2017 - August 2017
New Zealand Department of Conservation
Position
  • Consultant
February 1990 - present
New Zealand Department of Conservation
Position
  • Principal Science Advisor

Publications

Publications (159)
Article
Full-text available
The vascular flora, vegetation and fauna of Motueka and Poikeke Islands, eastern Coromandel Peninsula, northeast New Zealand, is described based on five visits to the islands during 1989, 2004–2008. Their combined flora totals 107 vascular species (76% indigenous) and 6 bryophytes. Seven vegetation associations are described. The islands lie 0.9 km...
Technical Report
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he kuaka / Whenua Hou diving petrel (Pelecanoides whenuahouensis) is a taoka (treasure) to Kāi Tahu, and the wider community. With only ~210 adults remaining it is one of the rarest birds of Aotearoa New Zealand and is listed as Threatened – Nationally Critical in Aotearoa and as Critically Endangered globally. Recent research suggested that, despi...
Article
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Harvesting individuals for translocations can negatively impact source populations, a critical challenge for species reduced to small populations. Consequently, translocation cohorts often remain small, reducing the establishment probability at the destination. Balancing the potential benefits and risks of such translocations is further complicated...
Article
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Few studies have assessed the influence of data quality on the predicted probability of occurrence and preferred habitat of marine predators. We compared results from four species distribution models (SDMs) for four southern-hemisphere albatross species, Buller’s (Thalassarche bulleri), Campbell (T. impavida), grey-headed (T. chrysostoma), and whit...
Article
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Flexibility in foraging strategy is an important mechanism by which seabirds cope with spatiotemporal heterogeneity in food availability and the variable energetic constraints of their annual life cycle. Foraging strategy flexibility was investigated in the grey-faced petrel Pterodroma gouldi breeding on Ihumoana Island (36°53′S, 174°26′E) using st...
Article
Seabird breeding success is known to reflect oceanic conditions. Gray-faced petrels (Pterodroma gouldi) breeding on the east coast of Auckland, New Zealand, exhibit poor reproductive success and slow chick development compared to west coast conspecifics. This study mapped changes in physiological traits (corticosterone [CORT] and hematological para...
Technical Report
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The Te Moananui-ā-Toi / Tīkapa Moana / Hauraki Gulf is regarded as an international area of significance for many of New Zealand’s seabirds. This is due to the diversity and number of species that rely on the area to survive, including the endemic species that breed in the marine park and the wider region – the tākoketai / black petrel, tītī / Pycr...
Technical Report
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The Hauraki Gulf, Tīkapa Moana, Te Moananui-ā-Toi is a place of striking seabird diversity. With its combination of multiple predator-free breeding sites on islands, and productive waters close to seabird colonies, the Hauraki Gulf region is a globally significant seabird biodiversity hotspot. This is remarkable given its proximity to the country’s...
Article
Accurate and repeatable population estimates are key to establishing population trends and conservation status. Rako, or Buller’s Shearwater (Ardenna bulleri) is a seabird endemic to New Zealand that breeds only on the Poor Knights Islands, but forages throughout wider areas of the Pacific Ocean during the non-breeding season. The lack of threats o...
Article
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Artificial light at night (ALAN) is considered a major threat to biodiversity, yet impacts of offshore ALAN on seabirds remain poorly understood. Particularly understudied are deck strikes (collisions of seabirds with vessels due to ALAN-induced disorientation). To infer deck strike risks to the critically endangered Whenua Hou Diving-petrel (Pelec...
Article
Diving petrels (genus Pelecanoides) are a group of small Southern Ocean seabirds whose taxonomy has remained problematic due to a lack of morphological diversity between species and limited availability of genetic data. Here we examine the phylogenetic relationships of the Pelecanoides diving petrels with analyses of the mitochondrial cytochrome b...
Article
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The population of the recently-described Whenua Hou diving petrel Pelecanoides whenuahouensis comprises c. 200 adults that all breed in a single 0.018 km2 colony in a dune system vulnerable to erosion. The species would therefore benefit from the establishment of a second breeding population through a translocation. However, given the small size of...
Article
Tracking data from 39 seabird species s used to define internationally important areas of seabird habitat, including geopolitical responsibility for seabirds across borders and in the high sea
Article
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Ten white-headed petrels (Pterodroma lessonii) from Adams Island, Auckland Islands, were tracked during 2011-14 using miniature geolocators, in the first study to examine the at-sea movements and key foraging areas of this pelagic seabird. Data revealed extensive migrations west to South Africa and east into the central South Pacific Ocean. The bir...
Article
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Migratory marine species cross political borders and enter the high seas, where the lack of an effective global management framework for biodiversity leaves them vulnerable to threats. Here, we combine 10,108 tracks from 5775 individual birds at 87 sites with data on breeding population sizes to estimate the relative year-round importance of nation...
Article
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Without insights into the threats affecting species across their distributions and throughout their annual cycles, effective conservation management cannot be applied. The Whenua Hou diving petrel Pelecanoides whenuahouensis (WHDP) is a Critically Endangered small seabird whose offshore habits and threats are poorly understood. We tracked WHDPs yea...
Article
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Recent advances in the control of mammalian predators have begun to reveal interspecific competition as a key driver in the structure of New Zealand forest bird communities once predation pressure is reduced. We present evidence that, when at high densities, South Island robins (Petroica australis) may be responsible for declines in a suite of smal...
Article
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Mercury (Hg) is a toxic metal which accumulates in organisms and biomagnifies along food webs, and hence, long‐lived predators such as seabirds, are at risk due to high Hg bioaccumulation. Seabirds have been widely used to monitor the contamination of marine ecosystems. Here, we investigated Hg concentrations in blood, muscle and feathers of seven...
Article
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Twenty-four breeding colonies of three petrel species were found on 18 of 26 islands surveyed in Breaksea Sound/Te Puaitaha, Fiordland National Park, New Zealand, in November 2017 and December 2019. All vegetated islands within Breaksea Sound were surveyed, along with 20 islands in Dusky Sound/Tamatea that were not included in an initial survey in...
Article
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This first breeding population estimate of northern giant petrels (Macronectes halli) in the Auckland Islands group involved whole-island censuses, apart from the main Auckland Island, in the 2015-16 breeding season, and multi-year repeat visits to a subset of island colonies. Parallel line-transects in giant petrel habitat were used to survey the...
Article
Enderby Island is a much-visited small island in the New Zealand subantarctic, and is an important area for birdlife. However, despite this, the bird community of Enderby Island has never been systematically described. We summarise bird records on Enderby Island from 1840 to 2018. Using these data we describe the bird community with an emphasis on...
Article
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We present the first study to examine the year-round distribution, activity patterns, and habitat use of one of New Zealand's most common seabirds, the fluttering shearwater (Puffinus gavia). Seven adults from Burgess Island, in the Hauraki Gulf, and one individual from Long Island, in the Marlborough Sounds, were successfully tracked with combined...
Article
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New Zealand is a global centre of diversity for gadfly petrels (family Procellariidae, genus Pterodroma). The 11 extant breeding species include six endemic species (grey-faced petrel Pt. gouldi, Chatham Island täiko/Magenta petrel Pt. magentae, mottled petrel Pt. inexpectata, Chatham petrel Pt. axillaris, Cook's petrel Pt. cookii and Pycroft's pet...
Article
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Forty breeding colonies of three petrel species were found on 35 of 71 islands surveyed in southern Fiordland, Fiordland National Park, New Zealand, in November and December 2017. Almost all islands in Chalky Inlet, Preservation Inlet, Cunaris Sound, Long Sound, and Isthmus Sound were surveyed. Sooty shearwater (Ardenna grisea) was the most widespr...
Article
Brown skuas Catharacta Antarctica lonnbergi breed across a broad latitudinal range from the Antarctic to temperate regions. While information on the non-breeding distribution and behaviour for Antarctic and subantarctic populations is known, no data exist for populations breeding at temperate latitudes. We combined geolocation sensing and stable is...
Article
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Unresolved taxonomy of threatened species is problematic for conservation as the field relies on species being distinct taxonomic units. Differences in breeding habitat and results from a preliminary molecular analysis indicated that the New Zealand population of the South Georgian Diving Petrel (Pelecanoides georgicus) was a distinct, yet undescri...
Data
Abstract in the Māori language/Te Reo Māori. (PDF)
Data
Video illustrating the exact biometric measuring techniques employed in this study. Accessible through https://youtu.be/gyJnRYW0NKY. (MP4)
Data
Lateral view of the holotype of P. whenuahouensis (NMNZ OR.21058) (Johannes H. Fischer). (TIF)
Article
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Small seabird species are often threatened by predation from invasive species at their breeding colonies and considerable efforts are invested into mitigating this threat. However, invasive predators may not be the only onshore threat affecting small seabird species. The South Georgia Diving-petrel Pelecanoides georgicus (SGDP) is a small seabird s...
Article
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A national survey of breeding red-billed gulls (Larus novaehollandiae scopulinus) was carried out during 2014-2016 to establish the present status of the species. Observers were asked to find and report all breeding colonies, starting with a check of previously reported breeding sites. Standardised means of conducting these surveys were developed,...
Article
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The tendency of various species, including many Procellariiformes, to breed in sub-terrestrial burrows, complicates breeding biology studies. Artificial nest boxes facilitate detailed data collection, but may alter the buffering capacity of natural burrows, especially when these nests are exposed to direct sunlight (e.g., in non-forested habitats)....
Article
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Following an initial aerial census of breeding New Zealand king shags (Leucocarbo carunculatus) in 2015, 2 further aerial censuses were carried out in 2016 and 1 census in 2017. In 2016, birds were photographed on 2 separate dates using a hand-held camera from inside a fixed wing aircraft. In 2017 the birds were photographed from a fixed-wing plane...
Article
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In September 2002 and 2014 respectively, 2,077 and 1,704 prospecting Hutton’s shearwaters were colour-marked on the ventral plumage at their breeding grounds at Kōwhai River, Seaward Kaikōura Ranges, New Zealand. Large numbers (425,516 in 2002, and 106,900 in 2014) of marked and unmarked birds were then counted from small boats off the Kaikōura coa...
Article
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The Common Diving Petrel (Pelecanoides urinatrix) is an abundant seabird species within New Zealand waters. Breeding in this species occurs from late July through to December and adults are thought to remain in New Zealand waters during non-breeding months. Yet no studies of the spatial ecology of the species within New Zealand have been undertaken...
Technical Report
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The second complete audit of the conservation status of the 487 taxa of birds that have been recorded in New Zealand since first human contact (about 800 years ago) was carried out. Using the same ranking criteria, the assessments made in the audit were compared with those for the 473 taxa included in the first complete audit in 2012. Since then, 1...
Article
The little penguin Eudyptula minor is primarily an inshore forager with its range generally limited to c. 30 km of breeding sites during the nesting period. However, exceptions with greater foraging distances have been recorded in Australia. To investigate the foraging range plasticity in New Zealand we used GPS tracks gathered on 68 individuals in...
Article
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We assessed the impact of interspecific interactions on the breeding success of the South Georgian diving petrel (Pelecanoides georgicus; SGDP), a Nationally Critical seabird species, by monitoring 20 burrows at Codfish Island (Whenua Hou), with remote cameras. Additionally, we tested the utility of remote cameras to study the breeding biology and...
Article
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Many marine predators migrate between breeding and non-breeding areas to targe resources that are seasonal but spatio-Temporally predictable, and so are vulnerable to climateinduce changes in prey phenology and abundance. In the Southern Ocean, small petrels ar major consumers, but perturbations in the ecosystem through ocean warming are altering f...
Article
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Although the flesh-footed shearwater Puffinus carneipes is a species with large population sizes (tens of thousands of breeding pairs) and widespread sub-tropical distribution across Australasian water masses, it is among the species most threatened by longline fisheries mortality in this region. While bycatch mitigation measures have been very suc...
Article
Although described as a distinct species in 1869, for more than a century now New Zealand's grey-faced petrel (Pterodroma macroptera gouldi Hutton, 1869) has been regarded as a subspecies of the great-winged petrel (P. macroptera A. Smith, 1840). However, several authors have recently questioned whether the taxon once again deserves full species st...
Technical Report
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The New Zealand National Bird Banding Scheme is coordinated by the Department of Conservation’s National Banding Office. The purpose of the Scheme is to have all banding records in a single system, this facilitates coordination between researchers, ensures high banding standards and safe-keeping of data. In this report we describe the numbers of bi...
Article
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Predation by yellowtail kingfish (Seriola lalandi) on a variety of seabirds is reported for the first time. These observations and a review of the available information indicate that at least eight species of seabird are taken by hapuku (Polyprion oxygeneios), snapper (Pagrus auratus) and yellowtail kingfish in New Zealand waters. Although predatio...
Article
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Identifcation of breeding sites remains a critical step in species conservation, particularly in procellariiform seabirds whose threat status is of global concern. We designed and conducted an integrative radiotelemetry approach to uncover the breeding grounds of the critically endangered New Zealand Storm Petrel Fregetta maoriana (NZSP), a species...
Article
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We provide a first assessment of various on-land capture methods for a procellarid seabird, the New Zealand Storm-Petrel Fregetta maoriana, which had been presumed extinct but for which a breeding site has just been discovered on Little Barrier Island. In the vicinity of an active breeding site, playback only, also involving a newly isolated call f...
Article
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The size and distribution of colonies of burrow-nesting petrels is thought to be limited partly by the availability of suitable breeding habitat and partly by predation. Historically, the availability of safe nesting habitat was restricted in New Zealand, due to the introduction of rats by humans. More recently, however, habitat has been restored b...
Article
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We present a simple framework for classifying mutually exclusive behavioural states within the geospatial lifelines of animals. This method involves use of three sequentially applied statistical procedures: (1) behavioural change point analysis to partition movement trajectories into discrete bouts of same-state behaviours, based on abrupt changes...
Article
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Within breath-hold diving endotherms, procellariiform seabirds present an intriguing anomaly as they regularly dive to depths not predicted by allometric models. How this is achieved is not known as even basic measures of physiological diving capacity have not been undertaken in this group. To remedy this we combined time depth recorder (TDR) measu...
Article
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Following breeding, sooty shearwaters Puffinus griseus leave New Zealand waters and migrate to 1 of 3 distinct areas in the North Pacific Ocean, effectively exploiting environmental resources across a large proportion of this northern ocean basin. In this study, we combined electronic tracking technology with stable isotope analyses (delta N-15 and...