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Recovering Australian Threatened Species

Recovering Australian Threatened Species
Author: Stephen Garnett
Publisher: CSIRO PUBLISHING
Total Pages: 361
Release: 2018-03
Genre: Nature
ISBN: 1486307426

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Australia’s nature is exceptional, wonderful and important. But much has been lost, and the ongoing existence of many species now hangs by a thread. Against a relentless tide of threats to our biodiversity, many Australians, and government and non-government agencies, have devoted themselves to the challenge of conserving and recovering plant and animal species that now need our help to survive. This dedication has been rewarded with some outstanding and inspiring successes: of extinctions averted, of populations increasing, of communities actively involved in recovery efforts. Recovering Australian Threatened Species showcases successful conservation stories and identifies approaches and implementation methods that have been most effective in recovering threatened species. These diverse accounts – dealing with threatened plants, invertebrates, fish, reptiles, birds and mammals – show that the conservation of threatened species is achievable: that it can be done and should be done. They collectively serve to inform, guide and inspire other conservation efforts. This is a book of hope and inspiration. It shows that with dedication, knowledge and support, we can retain and restore our marvellous natural heritage, and gift to our descendants a world that is as diverse, healthy and beautiful as that which we have inherited.


Factors Influencing the Conservation Status of the Glossy Black-cockatoo (Calyptorhynchus Lathami Lathami) on the Gold Coast, Queensland

Factors Influencing the Conservation Status of the Glossy Black-cockatoo (Calyptorhynchus Lathami Lathami) on the Gold Coast, Queensland
Author: Michelle Murdoch
Publisher:
Total Pages: 428
Release: 2012
Genre: Black cockatoos
ISBN:

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Abstract : Calyptorhynchus lathami, the Glossy-black Cockatoo, is a highly specialized monophagous bird feeding only on the cones of Allocasuarina species. Studies elsewhere have shown that C. lathami are restricted by a tight energy budget, forcing them to select high quality food sources, thereby minimizing effort and time in feeding, and resulting in the birds feeding in some trees and ignoring other apparently suitable trees. This specialized feeding habit, in conjunction with recent and ongoing habitat loss, is expected to cause a decline in their population in many localities. This study examined the abundance and distribution of C. l. lathami on the Gold Coast, Queensland. The feeding status and stability of feed trees was examined, comparing between feed and non-feed trees within a site, and between sites, determining why some trees and sites are fed upon, whilst others are ignored. The results indicate that many areas containing Allocasuarinas had little to no current potential as a food source due to low cone production. Ultimately, it was found that many birds were feeding in few suitable sites, with most sites being unsuitable. Where trees with adequate cones crops were observed, it was found that C. lathami would feed in the areas with abundant cones. Within these areas, the birds were feeding on trees with large cone crops. This study also used the number of chewings (pieces of cones: C. lathami feeding residue) to estimate bird abundance. The population size was calculated using the quantity and age of C. lathami feeding in the study area, and their daily food requirements. It was calculated that between 250 and 690 C. lathami were been feeding on the Gold Coast. On-going habitat loss on the Gold Coast may suggests that this population is not stable.


The Action Plan for Australian Birds 2010

The Action Plan for Australian Birds 2010
Author: Stephen Garnett
Publisher: CSIRO PUBLISHING
Total Pages: 453
Release: 2011-09-14
Genre: Science
ISBN: 0643103708

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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 trend in their population and distribution has been analysed using the latest iteration of IUCN Red List Criteria to determine their risk of extinction. The book also provides an account of all those species and subspecies that are or are likely to be extinct. Each categorisation is justified on the basis of the latest research, including much unpublished material that has been made available during workshops conducted with leading ornithologists and conservation biologists around the country as well as phone interviews and correspondence. The result is the most authoritative account yet of the status of Australia's birds. In this completely revised edition each account covers not only the 2010 status but provides a retrospective assessment of the status in 1990 and 2000 based on current knowledge, taxonomic revisions and changes to the IUCN criteria, and then reasons why the status of some taxa has changed over the last two decades. Maps have been created specifically for the Action Plan based on vetted data drawn from the records of Birds Australia, its members and its partners in many government departments. The book contains some surprises – some alarming, some encouraging. The status of some birds has improved over the last two decades as a result of dedicated conservation management. Some may not have changed status but at least they are holding their own. Many, however, are continuing to decline and a distressing number are new to the list. There is also an increasing number of birds for which captive insurance populations need not only to be considered as a future option but actively pursued before it is too late. But this is not a book of lost causes. It is a call for action to keep the extraordinary biodiversity we have inherited and pass the legacy to our children. Every one of Australia's threatened taxa can be saved. This book describes the populations of species at greatest risk and outlines ways we can turn them around. 2012 Whitley Award Commendation for Zoological Resource.