Guy Dutson

Guy Dutson
The Biodiversity Consultancy

About

45
Publications
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2,297
Citations

Publications

Publications (45)
Article
Full-text available
A critical step towards reducing the incidence of extinction is to identify and rank the species at highest risk, while implementing protective measures to reduce the risk of extinction to such species. Existing global processes provide a graded categorisation of extinction risk. Here we seek to extend and complement those processes to focus more n...
Article
Full-text available
The island of Makira in the eastern Solomon Islands is a globally significant priority for bird conservation and, like other islands in Melanesia, its avifauna plays an important role in understanding patterns of biogeography and speciation. Large portions of the island have rarely been visited by ornithologists, however, and published natural hist...
Article
Full-text available
New Britain in the Bismarck Archipelago of Papua New Guinea supports 14 endemic bird species and together with New Ireland, forms an Endemic Bird Area that supports 38 restricted range species. Extensive conversion of lowland forest to oil palm plantations resulted in the loss of over 20% of forest under 100 m altitude between 1989 and 2000. Howeve...
Article
Full-text available
The Oyu Tolgoi (OT) project, one of the world's largest copper and gold mines, is located in Gobi Desert of Mongolia. To help meet its target of Net Positive Impact on key biodiversity features such as the Houbara bustard (Chlamydotis undulata) the OT installed bird flight diverters (BFDs include spiral and flapper devices) to its power transmissio...
Article
The microhabitat of sympatric Eastern Blue-tongued Lizard Tiliqua scincoides and Blotched Blue-tongued Lizard T. nigrolutea was recorded along the Yarra River in suburban Melbourne. The habitat within a one metre radius of 20 T. scincoides and more than 23 T. nigrolutea was compared to the habitat available at the study sites. The habitat within on...
Article
Full-text available
We introduce a dataset of biological, ecological, conservation and legal information for every species and subspecies of Australian bird, 2056 taxa or populations in total. Version 1 contains 230 fields grouped under the following headings: Taxonomy & nomenclature, Phylogeny, Australian population status, Conservation status, Legal status, Distribu...
Article
Full-text available
Increased recognition of the business case for managing corporate impacts on the environment has helped drive increasingly detailed and quantified corporate environmental goals. Foremost among these are goals of no net loss (NNL) and net positive impact (NPI). We assess the scale and growth of such corporate goals. Since the first public, company-w...
Article
Three weeks of intensive surveys in Norfolk Island National Park in 2009 failed to find White-chested White-eye Zosterops albogularis and it was calculated that there was a less than 17% probability that a population of 10 birds had been overlooked. The last multi-observer record of this species was in 1978, and it is recommended that the species’...
Article
1. Expert knowledge is used routinely to inform listing decisions under the IUCN Red List criteria. Differences in opinion arise between experts in the presence of epistemic uncertainty, as a result of different interpretations of incomplete information and differences in individual beliefs, values and experiences. Structured expert elicitation aim...
Article
Full-text available
Protected areas (PAs) are a cornerstone of conservation efforts and now cover nearly 13% of the world's land surface, with the world's governments committed to expand this to 17%. However, as biodiversity continues to decline, the effectiveness of PAs in reducing the extinction risk of species remains largely untested. We analyzed PA coverage and t...
Data
Coverage of IBAs and AZEs by PAs and by internationally designated sites, and site-scale conservation under climate change. (DOC)
Data
Red List Index of species survival for species triggering IBAs of which over 50% are completely protected, compared with those for which≤50% are completely protected. Shading indicates the 95% confidence intervals based on uncertainty around the estimated value that is introduced by Data Deficient species. (TIF)
Data
Observed annual percentage declines in Red List Index (RLI) are significantly different from those expected by chance based on 10,000 randomisations for (A) bird species (during 1988–2008) with>50% of IBAs completely protected (N = 1,004, P<0.001), and (B) for bird (1988–2008), mammal (1996–2008) and amphibian species (1980–2004) restricted to sing...
Data
Completely protected IBAs (n = 737) are significantly less threatened than partially/unprotected IBAs (n = 1,263; chi-squared test: χ2 = 19.0, df = 3, P <0.001), but almost half (47%) face ‘high’ or ‘very high’ threats. (TIF)
Data
Annual percentage decline in Red List Index for bird species (during 1988–2008) with different proportions of IBAs completely protected. Numbers within each bar refer to the number of species. Error bars show 95% confidence intervals based on uncertainty around the estimated value that is introduced by Data Deficient species. (TIF)
Data
List of countries excluded from the analysis of PA coverage of IBAs owing to incomplete data on IBAs and/or their PA coverage. (DOCX)
Data
Trends in mean % area protected for IBAs in different (A) habitats and (B) regions. Shading shows 95% confidence intervals based on uncertainty around date of protection (and, for a small subset of IBAs, proportion protected). (TIF)
Data
PA coverage (% area) for IBAs in different ecosystems, habitats, regions, and relevant to different Multilateral Environmental Agreements. (DOCX)
Book
The Action Plan for Australian Birds 2010 is the third in a series of action plans that have been produced at the start of each decade. The book analyses the International Union for Conservation of Nature (IUCN) status of all the species and subspecies of Australia's birds, including those of the offshore territories. For each bird the size and tre...
Article
Full-text available
Using data for 25,780 species categorized on the International Union for Conservation of Nature Red List, we present an assessment of the status of the world's vertebrates. One-fifth of species are classified as Threatened, and we show that this figure is increasing: On average, 52 species of mammals, birds, and amphibians move one category closer...
Article
Full-text available
There has been little research on the ecological requirements of the Beautiful Firetail Stagonopleura bella, and its habitat preferences are poorly understood. On mainland Australia, the Beautiful Firetail is generally considered to be a bird of coastal regions and the lowlands. This note reports an observation of Beautiful Firetails on the Great D...
Article
Full-text available
Intensive inventory work on the Mt. Kitanglad massif of north-central Mindanao, Bukidnon Province, Republic of the Philippines, revealed a diverse avifauna. In all, 198 bird species were detected, of which about 172 were likely breeding in the area, placing the mountain among the most diverse sites that have been surveyed in the country. Three migr...
Article
A new species of white-eye, the Vanikoro White-eye Zosterops gibbsi, is described from the island of Vanikoro (= Vanikolo) in the Santa Cruz Islands (= Temotu Province) within the Solomon Islands. It differs from the geographically closest white-eye, the Santa Cruz White-eye Zosterops sanctaecrucis, by a number of features including a much longer b...
Article
Remote sensing is increasingly used by policy-makers and conservationists to identify conservation priorities and changes in land cover. This is particularly important in the biodiverse tropics, where there are often few field data. Conservation action is often directed towards areas containing globally threatened species, but there have been few a...
Article
Full-text available
The frogmouth taxon occurring on the Solomon Islands has been known as Podargus ocellatus inexpectatus, a subspecies endemic to four islands in the Solomon Islands of a species that also inhabits New Guinea and Australia. Our morphological, osteological and molecular studies support recognition of inexpectatus at the species level, and further reve...
Article
Full-text available
Intensive inventory work on the Mt. Kitanglad massif of north-central Mindanao, Bukidnon Province, Republic of the Philippines, revealed a diverse avifauna. In all, 198 bird species were detected, of which about 172 were likely breeding in the area, placing the mountain among the most diverse sites that have been surveyed in the country. Three migr...
Article
Shrikebills constitute a poorly known genus (Clytorhynchus) of Pacific island forest birds, ranging from the Solomon Islands to New Caledonia and American Samoa. This review updates all aspects of their conservation ecology, including taxonomy and identification. Data sources are BirdLife International's field work in Fiji (totalling 43 surveys, mo...
Article
Full-text available
This paper documents noteworthy records of 73 bird species for Micronesia from 1986-2003. We describe six new records for the region, three each for the Mariana and Marshall Islands, two for the Carolines, and 25 new island records. Additional reports are included for species that are either rare or poorly documented for particular islands. Of the...
Article
New Caledonia supports outstanding biological diversity, including many endemic bird species, some of which are threatened with extinction. The high levels of taxonomically unusual avian endemism make the islands one of the most urgent priorities for bird conservation in the Pacific region. We provide new data on the distribution of, and threats to...
Article
New island records are presented for Melanesia. Most are from 11 months' fieldwork in 1997-98, with other records from fieldwork in 1990 and a few other recent unpublished records. Whilst most records are of migrants or species previously overlooked, a number of waterbirds and grassland species appear to be expanding their ranges. The most notable...
Article
Forest birds were surveyed on the islands of Flores and Sumbawa, Indonesia, in July-September 1993. Assessments were made of the conservation status and habitat requirements of the restricted-range, threatened, and near-threatened species. Semi-evergreen rainforest was found to be more important than moist deciduous monsoon forest for the conservat...
Article
The Cebu Flowerpecker Dicaeum quadricolor, considered extinct since 1906, was rediscovered in a very small (<2 km2) patch of largely degraded forest near Tabunan, Cebu island, Philippines, in 1992. This patch also holds at least four of the five other bird forms endemic to Cebu that are known to be extant. There appears to be no other forest with a...
Article
Full-text available
Ornithological surveys were carried out in the remnant forests of the island of Negros, in the central Philippines, over five weeks in the summer of 1991. From this work it is concluded that, without the implementation of immediate conservation measures, the global extinction of four bird species is likely to occur in the near future. These are Neg...
Article
Full-text available
Four weeks of fieldwork in the forests of Mindoro, Philippines, in 1991 has elucidated the status of the six bird species endemic to the island. Of these, Ducula mindorensis and Otus mindorensis are high-altitude species with restricted ranges and in need of active conservation in the medium term. Three of the four lowland species, Gallicolumba pla...
Article
The Superb Pitta Pitta superba, an almost wholly unknown rainforest endemic of Manus Island, Papua New Guinea, was investigated in June/July 1990. On the basis of its call, a rising then falling whistle given twice, it appears to occur at low densities and may be restricted to hillier areas where stones can help break snail shells. The snake Boiga...

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