Thomas Newsome

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New paper on red fox home-range sizes

Our paper “Short-term tracking of three red foxes in the Simpson Desert reveals large home-range sizes” was recently published in Australian Mammalogy.
A copy of the abstract is below and you can view the paper HERE.
“The red fox (Vulpes vulpes) is probably the most intensively studied introduced predator in Australia, but little is known about its movements in arid areas. Here, we report on the home-range sizes of one male and two female red foxes that were tracked for 2–8 months using collars fitted with ARGOS transmitters in the Simpson Desert, central Australia. Based on the 100% Minimum Convex Polygon method, home-range sizes were 5723 ha, 50 158 ha, and 12 481 ha, respectively. Based on the 95% kernel contour method, home-range sizes were 3930 ha, 26 954 ha, and 12 142 ha, respectively. These home-range sizes are much larger than any recorded previously from elsewhere in Australia, suggesting that red foxes in the Simpson Desert need to roam over extensive areas to find enough resources to meet their energetic needs. Given that predation by red foxes poses a key threat to many small and medium-sized native mammals, we suggest that red fox control operations may need to be undertaken at very large spatial scales to be effective in arid areas.”
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Co-author Emma Spencer releasing one of the red foxes tracked in the study.

Third Book Review

RedKangBook
Nancy Cushing from the School of Humanities and Social Science, University of Newcastle, recently reviewed our book “The Red Kangaroo in Central Australia; an early account by A.E. Newsome”.
The review was published in the journal Historical Records of Australian Science.
A copy of the review is provided below, and the original version can be viewed HERE.
      “The Red Kangaroo in Central Australia is a son’s tribute to his father but also a younger scientist’s homage to a pioneer. Discovered amongst former CSIRO ecologist Alan Newsome’s papers three years after his death in 2007, the unfinished text had been intended for publication in the mid-1970s. While others have advanced understandings of the red kangaroo in the intervening period, the lasting contribution of this slim volume lies in its lively account of the methods, attitudes and lived experience of a field ecologist working in Arrente country north of Alice Springs from the late 1950s to the early 1970s.
      When he first joined the Northern Territory’s Animal Industry Branch in 1957, Newsome was just 22 years old, with a freshly minted Bachelor of Science from the University of Queensland. Directed to investigate the red kangaroo (then Macropus rufus, now Osphranter rufus) as a pest to the pastoral industry, he was well aware that he had a lot to learn and listened carefully to kangaroo hunters, cattlemen and Indigenous elders. Newsome studied the red kangaroo intensively through the 1960s, applying careful scientific methods and a good measure of  seat-of-the-pants improvisation. Aerial surveys, days spent observing soaks and the post-mortem examination of some 2000 carcases built up Newsome’s deep knowledge of his subject.
      Beginning with an historical introduction, the book is organized into seven chapters that place the red kangaroo in its physical setting of the Central Australian landform, climate and vegetation. It then considers the species’ distribution and numbers, its highly adapted reproductive processes, food preferences and water sources, and group behaviour (labelled ‘Sociology’).
      Chapter 2, addressing climate, is now of greater interest than when it was first drafted. Although unaware of the El Niño phenomenon, Newsome produced evidence of cycles of wetter and dryer years back to 1892, including the record dry he himself witnessed between 1958 and 1965. He furthermore made the link between drought and interracial violence that is now being explored by historians.
      By tracking kangaroo populations through this cycle, in Chapter 3 Newsome addressed his employer’s concerns about competition with sheep and cattle. Red kangaroos had expanded their range as new dams and bores allowed more individuals to survive times of drought, and the consumption of long dry grasses by introduced livestock encouraged the sprouting of the green grass needed by kangaroos. Newsome solved some of the riddles of kangaroo populations, showing that while they preferred to live in mulga scrub, mobs moved onto open plains during drought. Thus they created an impression of increasing numbers just when cattlemen were most troubled by their presence—and also when successful reproduction fell to near zero.
      In Chapters 4 and 5, on physiology and diet, Newsome described his methods and findings in sufficient detail to satisfy other ecologists, but with an immediacy that also readily engages the non-specialist. Comparisons with better-known animals make the distinctive adaptations of the red kangaroo to their arid environment stand out, including the reflective pale red fur that lessens the heating effect of the sun. Even with these attributes, Newsome concluded that red kangaroos lived at the limits of their capacity for survival in Central Australia, with numbers kept in check by regular droughts.
      For historians, the human as well as human–animal relations described by Newsome are of great interest. His book portrays a strikingly masculine world in which not a single female name is recorded. Unnamed Aboriginal women do appear in the text, voiceless in comparison with their male counterparts with whom Newsome hunted and prepared kangaroo for consumption. He acknowledged the long shared history of Arrente people and red kangaroos and described his own research into this relationship, informed by the contemporary work of anthropologist Ted Strehlow. In his 1980 Mankind article, reprinted in full in the final chapter, ‘Ecomythology’, Newsome made a case that the stories told by Aboriginal elders had an underlying ecological rationale, with dreaming tracks crossing habitats most favoured by red kangaroos and restrictions on hunting at dreaming sites reducing pressure on populations. That Indigenous people have a deep environmental knowledge that is embedded in traditional stories, is now widely understood but was then only just being recognized in the wider society. According to his son, this was Newsome’s least cited article but the one of which he was most proud.
      Thomas Newsome was well placed to serve as his father’s editor: he is also an ecologist who has worked in the Alice Springs area. He rounded out incomplete chapters and inserted tables, charts and photographs from other pieces of Alan’s work, also adding a foreword, maps and explanatory notes. In the absence of a conclusion, an afterword would have been welcome, to explore how Newsome’s research was received, its impact and longevity. This could have been supported by suggestions for further reading in ecological and anthropological texts that have advanced or challenged his findings.
      The Red Kangaroo in Central Australia is an engaging and informative book that draws the reader into the world of a curious ecologist. Seeking answers to questions that had practical applications at the time, they hold even greater layers of significance now.”
Thanks Nancy for the review.

Bushmeat hunting threatens mammal populations and ecosystems, poses food security threat

Below is a copy of the press release for our new paper titled:

“Bushmeat hunting and extinction risk to the world’s mammals”

You can view the paper HERE and links to media HERE including a feature article in Science

Contact: Nick Houtman, 541-737-0783, nick.houtman@oregonstate.edu

Source: William Ripple, 541-737-3056, bill.ripple@oregonstate.edu

Links to photos are at the end of this story.

CORVALLIS, Ore. — The ongoing decline of more than 300 species of animals is having significant environmental impacts and posing a food security threat for millions of people in Asia, Africa and South America, according to the first global assessment of the hunting and trapping of terrestrial mammals.

Species of large wild ungulates, primates and bats are threatened primarily due to unregulated or illegal hunting, according to data collected by the International Union for the Conservation of Nature (IUCN), a nongovernmental organization. An international research team led by William Ripple, distinguished professor of ecology at Oregon State University, analyzed data on the IUCN Red List to reach their conclusions.

The animals at risk range across the spectrum from large (grey ox, Bactrian camels, bearded and warty pigs) to small (golden-capped fruit bat, black-bearded flying fox and Bulmer’s fruit bat). Hunting endangers more primate species — 126, including the lowland gorilla, chimpanzee, bonobo and many species of lemurs and monkeys, than any other group.

 

bushmeathunting2

Populations of other species are declining and similarly threatened: Javan and black rhinoceroses, tapirs, deer, tree kangaroos, armadillos, pangolins, rodents and large carnivores, all of which are hunted or trapped for meat, medicine, body parts, trophies or live pets.

Scientists reviewed IUCN data on 1,169 of the world’s terrestrial mammals that are listed as threatened with extinction. These animals represent 26 percent of all mammals for which data exist to determine whether or not they are endangered. The research team published its analysis today in Royal Society Open Science, a professional journal.

Forests, grasslands and deserts in the developing world are now lacking many species of wild animals and becoming “empty landscapes,” the authors wrote.

The researchers suggested five broad steps for effectively addressing the threat:

  • Laws could be changed to increase penalties for poaching and illegal trafficking and to expand protected habitats for endangered mammals.
  • Property rights could be provided to to communities that benefit from the presence of wildlife.
  • Food alternatives can help shift consumption to more sustainable species, especially protein-rich plant foods.
  • Education could help consumers in all countries understand the threats to mammals that are hunted or trapped.
  • Assistance in family planning could help relieve pressure on wildlife in regions where women want to delay or avoid pregnancy.

The researchers suggest that, to curb this overhunting crisis, more logistical and financial support will be needed from the richer developed countries. They conclude that only bold changes and political will can diminish the possibility of humans consuming many of the world’s wild mammals to the point of extinction.

“Our analysis is conservative,” said Ripple. “These 301 species are the worst cases of declining mammal populations for which hunting and trapping are clearly identified as a major threat. If data for a species were missing or inconclusive, we didn’t include it.

“Our goal is to raise awareness of this global crisis. Many of these animals are at the brink of extinction,” he added. “The illegal smuggling in wildlife and wildlife products is run by dangerous international networks and ranks among trafficking in arms, human beings and drugs in terms of profits.”

People across much of the globe depend on wild meat for part of their diets, the researchers noted. For example, they wrote, “an estimated 89,000 metric tons of meat with a market value of about $200 million are harvested annually in the Brazilian Amazon, and exploitation rates in the Congo basin are estimated to be five times higher….” Loss of these mammals could affect the livelihoods of millions of people, the researchers said.

Overhunting of mammals is concentrated, they added, in countries with poorer populations. As hunters find it harder to feed their families, it is likely they will switch to less preferred species, migrate or suffer from malnutrition and disease.

Not all wild meat is consumed for subsistence, the researchers noted. Much of it is sold in markets and as delicacies in urban restaurants. In 2010, another team of scientists found that about five tons of bushmeat are smuggled weekly in tourist luggage through the Charles de Gaulle airport in Paris.

Large carnivores and herbivores (bigger than 10 kilograms or 22 pounds) comprise a small percentage of all mammals listed but tend to be impacted more severely by overhunting, the researchers reported. By dispersing seeds and controlling smaller animals such as rodents, large animals have significant impacts on the environment.

The loss of large mammals could lead to long-lasting ecological changes, including overpopulation of prey, higher disease risks and the loss of benefits for humans, the researchers said. The scientists found that 57 species of even-toed ungulates (such as hippopotamus, wild yak, camel, marsh deer) larger than 10 kilograms are threatened by hunting.

Smaller mammals play crucial roles in dispersing seeds, pollinating plants and controlling insects. The largest group of mammals under 1 kilogram (about 2 pounds) threatened by hunting is comprised of 27 species of bats.

Ripple has led international collaborations to analyze the status and ecological effects of large animals. Co-authors on this project include researchers at Oregon State University, Stanford University, the University of California Santa Barbara and universities in Gabon, the U.K., Sweden, South Africa, Brazil and Australia.

Editor: Photos of some of the animals mentioned in this story are available on Flickr:

  1. Clouded leopard, https://flic.kr/p/MwEGqt
  2. Giant ground pangolin, https://flic.kr/p/MwEsuc
  3. Mountain gorilla, https://flic.kr/p/MwEmyp
  4. Collared brown lemur, https://flic.kr/p/LzeDQ7
  5. Aye-aye, https://flic.kr/p/LzhSu8

 

About the OSU College of Forestry:  For a century, the College of Forestry has been a world class center of teaching, learning and research. It offers graduate and undergraduate degree programs in sustaining ecosystems, managing forests and manufacturing wood products; conducts basic and applied research on the nature and use of forests; and operates 14,000 acres of college forests.

 

Second book review

Chris Watson, a colleague from my time in Alice Springs, recently reviewed our book “The Red Kangaroo in Central Australia; an early account by A.E. Newsome“.

Below is a copy of the review and links to the original webpages.

http://www.chriswatson.com.au/blog/the-red-kangaroo-in-central-australia-an-early-account-by-a-e-newsome

“Desert lands have an appealing starkness and simplicity. The very grain of the countryside is exposed to all. Ancient mountain ranges plunge and rear from the plains. Rocks and boulders lie tumbled at their feet. Dry watercourses break through mountain gorges to meander and die in the desert. Stunted trees stand mutely enduring the heat.

Biological survival in such a land is not simple.” – p.15-16

It is just such a land, however, which is home to the Red Kangaroo Osphranter rufus; the largest extant marsupial on Earth and Australia’s largest terrestrial mammal. The Red Kangaroo is an Australian icon that ranks with Uluru and the Sydney Opera House for international recognition. The Red Kangaroo in Central Australia presents the gathered thoughts and findings on the species, from the early work of one of the great minds of Australian ecology.

Alan Newsome’s work was already familiar to me when I gained employment as an environmental consultant in Alice Springs in 2011. As it happens, Alan’s son, Thomas Newsome, was working at the firm which took me on, and I’d learn that he is a gifted ecologist in his own right. I’d been living in Central Australia for several years at that time and, being interested in the ecology of Central Australian fauna, Alan Newsome’s name was a regular feature on my reading list. Though I only worked with Thomas for a short time, my excitement at the publication of The Red Kangaroo in Central Australia comes, not only from my own affinity for the country and animals that it describes, but from an appreciation of his standing, and his father’s, in the Australian ecological community.

Alan began studying the Red Kangaroo in 1957 and it’s important to appreciate how rudimentary our understanding of the animal’s ecology was at that time. Alan was the first to discover many of the behavioural and physiological adaptations that have allowed the species to live so successfully in a landscape with such famously extreme and irregular conditions. Working on the beautiful plains to the north of the MacDonnell Range, Alan methodically uncovered the mysteries of the Red Kangaroo’s life. His book takes us through the challenges the kangaroo must overcome to survive in this country in chapters dealing with the landforms, climate and vegetation; distribution and abundance; reproduction (some of Alan’s most astonishing discoveries relate to the reproductive biology of the Red Kangaroo and these breakthroughs, and the methods by which they were revealed, are presented in considerable detail); food and water; sociology and a final chapter titled Ecomythology.

In addition to the main body of text there is an enlightening foreword by famed marsupial biologist Hugh Tyndale-Biscoe and a preface by Thomas Newsome in his role as co-author and editor. [Alan Newsome passed away in 2007. This book is the edited result of a mostly complete manuscript which Thomas discovered among Alan’s effects in 2010.]

In the intervening decades since Alan Newsome’s field work, another generation of ecologists has built on his findings and we understand the Red Kangaroo’s biology well. But perhaps the great story presented by The Red Kangaroo in Central Australia, and a thread running through the entire book, is Alan’s determination to also come to grips with the Aranda* understanding of kangaroo ecology.

Like few other outback zoologists since Baldwin Spencer and F. J. Gillen, Newsome allows room for Indigenous Ecological Knowledge (IEK) to be interpreted scientifically and considered alongside his own findings. The culmination of the book is in the final chapter titled Ecomythology in which Alan sets out the close alignment of his own hard-won knowledge with the traditional knowledge of his Aranda colleagues. The world has turned now and it is routine for IEK to be incorporated into scientific research and reporting, but we see the foundations of this practice in Alan’s work at a time when such considerations were by no means commonplace.

In addition to the book’s value as an important work of science and history, it is a beautiful piece of writing. As the brief excerpt I’ve used reveals, Alan’s was an engaging writing style, as stripped-back and plain as the desert landscapes he describes. As an avowed desert-lover myself, Alan’s deep affection for the country in which he spent so much of his career, is instantly relatable from the way he writes about it. He also had that all-too-rare talent for rendering scientific writing enjoyable for the reader, without sacrificing any of its rigour. The ease of his style is such that The Red Kangaroo in Central Australia reads more like a story than a scientific treatise at times. This is testament to his ability to render deep scholarship comprehensible to the lay-reader rather than any “dumbing down” or skimping on detail.

Ultimately, The Red Kangaroo in Central Australia will appeal to an audience far beyond the ranks of biologists. It includes almost as much history and anthropology as it does ecology. It’s difficult to avoid drawing comparisons with the writings of other prominent Centralian researchers like T.G.H. Strehlow, with whom Alan discussed his work at some length, and the correspondence of the aforementioned Spencer and Gillen.

As well as being a peerless account of animal ecology and scientific investigation in the desert, it is a postcard from Central Australia and the ecological adventures of a young scientist on a personal journey of discovery. There is no doubt that The Red Kangaroo in Central Australia will continue to inspire and inform future generations of Australian ecologists for a very long time to come.

CBW

*Also spelled Arrernte and Arunta, these are the Aboriginal Australians who are the traditional custodians of the lands surrounding Alice Springs and much of the MacDonnell Ranges in Central Australia.

Thanks Chris for the kind review.

 

 

Saving the world’s terrestrial megafauna

In collaboration with more than 40 other scientist we published an opinion article in the journal BioScience calling for a coordinated global plan to prevent the world’s megafauna from extinction.

You can access a full copy of the paper HERE

A key part of the paper is the following declaration:

We conservation scientists

  1. Acknowledge that most of the terrestrial megafauna species are threatened with extinction and have declining populations. Some megafauna species that are not globally threatened nonetheless face local extinctions or have Critically Endangered subspecies.

  2. Appreciate that “business as usual” will result in the loss of many of the Earth’s most iconic species.

  3. Understand that megafauna have ecological roles that directly and indirectly affect ecosystem processes and other species throughout the food web; failure to reverse megafaunal declines will disrupt species interactions, with negative consequences for ecosystem function; biological diversity; and the ecological, economic, and social services that these species provide.

  4. Realize that megafauna are epitomized as a symbol of the wilderness, exemplifying the public’s engagement in nature, and that this is a driving force behind efforts to maintain the ecosystem services they can provide.

  5. Recognize the importance of integrating and better aligning human development and biodiversity conservation needs through the engagement and support of local communities in developing countries.

  6. Propose that funding agencies and scientists increase conservation research efforts in developing countries, where most threatened megafauna occur. Specifically, there is a need to increase the amount of research directed at finding solutions for the conservation of megafauna, especially for lesser-known species.

  7. Request the help of individuals, governments, corporations, and nongovernmental organizations to stop practices that are harmful to these species and to actively engage in helping to reverse declines in megafauna.

  8. Strive for increased awareness among the global public of the current megafauna crisis using traditional media as well as social media and other networking approaches.

  9. Seek a new and comprehensive global commitment and framework for conserving megafauna. The international community should take necessary action to prevent mass extinction of the world’s megafauna and other species.

  10. Urge the development of new funding mechanisms to transfer the current benefits accrued through the existence values of megafauna into tangible payments to support research, conservation actions, and local people who bear the cost of living with wildlife in the places where highly valued megafauna must be preserved.

  11. Advocate for interdisciplinary scientific interchange between nations to improve the social and ecological understanding of the drivers of the decline of megafauna and to increase the capacity for megafauna science and conservation.

  12. Recommend the reintroduction and rehabilitation, following accepted IUCN guidelines, of degraded megafauna populations whenever possible, the ecological and economic importance of which is evidenced by a growing number of success stories, from Yellowstone’s wolves (Canis lupus) and the Père David’s deer (Elaphurus davidianus) in China to the various megafauna species of Gorongosa National Park in Mozambique.

  13. Affirm an abiding moral obligation to protect the Earth’s megafauna.

We hope the paper stimulates discussion and action to help save the world’s terrestrial megafauna from extinction.

Pics

Photo Credits: Elephant and hippopotamus (K. Everatt), rhinoceros (G. Kerley).

Book Review By Ian Fraser

Ian Fraser who is a Canberra-based professional naturalist and writer recently reviewed our book “The Red Kangaroo in Central Australia; an early account by A.E. Newsome“.

Below is a copy of the review and links to the original webpages.

http://www.botanicalbookshop.com.au/page/ianfraserreviews.aspx

http://www.botanicalbookshop.com.au/user/files/Ian%20Fraser%2022.pdf

“When I was a shy young teenager growing up in a housing trust suburb of Adelaide, a most interesting family moved next door for a while. He was a tall dark-haired quietly spoken young biologist doing a PhD at Adelaide University; even then I was fascinated by the natural world and he was a natural hero for me. His name was Alan Newsome, and in later years I followed his zoological career with interest. You may recall that he came to temporary prominence as the CSIRO dingo expert at the Lindy Chamberlain trial, but he deserves to be remembered for much more than that. He was one of the greats in a line of Australian desert zoologists, which includes such names as Hedley Finlayson, Francis Ratcliffe, Tim Ealey, Graham Caughley and Geoff Sharman. In particular he was instrumental in unravelling many secrets of the Red Kangaroo and the Dingo over decades of complex and diligent work in central Australia, working closely with pastoralists and indigenous communities. This is an interesting and historically highly significant book, published by his son Thomas (himself a professional ecologist) from notes he found in the Canberra family garage after Alan died in 2007. It was an account of the results of his years of desert research into the Red Kangaroo, its ecology and its interactions with the pastoral industry, and was supposed to be published at the time – Thomas found letters from the publisher asking that it be completed – but it never was. Cannily, Thomas finishes the book with a reprint of a paper Alan published in 1980, on ‘Eco-mythology’ – a comparison of indigenous stories and modern ecology, in which he found that the stories made perfect sense when seen through the lens of ecology. This was one of Alan’s most important achievements. I am personally delighted that this book has been published, and in the broader world it fully deserves an honoured place in the Australian zoological literature.”

Thanks Ian for the kind review.

2016 Update – Book and New Papers

It’s been a while since my last post, but a lot has happened in 2016. Three exciting updates are outlined below.

Update 1: Book Release

You can view a copy of the promotional material, including how to pre-order a copy of my new book “The Red Kangaroo in Central Australia: An Early Account by AE Newsome” HERE

RedKangBook

 

Update 2: New Paper – Food Habits of the World’s Grey Wolves

In this paper we provide the first comprehensive review of grey wolf diets around the world. Below is a copy of abstract, and you can view the paper HERE

Abstract

1.  Grey wolves (Canis lupus) have been studied extensively, but there has been no detailed review of the species’ feeding ecology. This is despite growing debate about how to conserve wolf populations while limiting their impacts on wild or domestic ungulates. Here, we assess the extent to which grey wolf diet varies among and within North America, Europe and Asia. We discuss the implications of the results for conservation and management.

2.  We derived dietary data from searches of published literature. We grouped studies based on their bioregional location. We compared grey wolf diet among locations using nonmetric multidimensional scaling and analysis of similarity. We assessed whether increased human impacts would decrease grey wolf dietary diversity. Finally, using studies from southern Europe, we assessed whether the proportion of wild ungulates in grey wolf diet increased over time, coincident with a decline in domestic species in grey wolf diet over time.

3.  We compiled dietary data from 177 studies incorporating 94,607 scat and stomach samples. Grey wolf diet was dominated by large (240-650 kg) and medium-sized (23-130 kg) wild ungulates, but variation in the proportion of wild ungulates consumed, along with high proportions of domestic and smaller prey species consumed, contributed to the dietary differences found among and within continents.

4.  We found no evidence that grey wolf dietary diversity varies globally. However, the result from southern Europe suggests that grey wolves may switch their diets away from domestic species if more wild ungulates are available.

5.  The diversity of prey consumed by grey wolves highlights that the species is capable of surviving dramatic anthropogenic upheaval. However, there is an urgent need to increase our understanding of grey wolf foraging ecology in human-dominated landscapes to determine whether restoration of depleted prey populations, coupled with effective damage-prevention measures, will reduce human-wolf conflicts.

Wolf

 

Update 3: New Paper – Our Take on the Trophy Hunting Debate

In their recent article ‘Banning Trophy Hunting Will Exacerbate Biodiversity Loss’ Di Minin et al. presented a set of arguments in support of trophy hunting (i.e. killing animals for sport). They suggested that trophy hunting will benefit biodiversity (i.e., the number of plant and animal species in an area) through several main mechanisms, including (i) increased funding for conservation; (ii) a smaller carbon footprint compared with ecotourism; and (iii) the emphasis on maintaining large wildlife populations. In reply to this article we argue that these justifications do not go deep enough into the direct and indirect mechanisms that affect native plant and animal species and ecosystems. In addition to potential social, economic, and ethical issues, we argue that greater consideration of the ecological and evolutionary effects of trophy hunting is required to fully evaluate it as a conservation tool. You can view our reply HERE and a rebuttal by Di Minin et al. HERE. Thanks Di Minin et al. for the robust debate. Is the jury still out? I will let you all decide.
Hippo_Trophy-2

By Lord Mountbatten – Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=17953744