Possum Control In Native Forests

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Possum Control In Native Forests

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Author :
language : en
Publisher:
Release Date : 1994

Possum Control In Native Forests written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Forest protection categories.

Effect Of One Hit Control On The Density Of Possums Trichosurus Vulpecula And Their Impacts On Native Forest

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Author :
language : en
Publisher:
Release Date : 2010

Effect Of One Hit Control On The Density Of Possums Trichosurus Vulpecula And Their Impacts On Native Forest written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Forest canopies categories.

Introduced possums (Trichosurus vulpecula) have unwanted impacts on New Zealand's indigenous forest, but how forests respond to possum control is not well understood. Here, we document how possum populations, and the tree species they feed on, responded over 6-8 years following aerial 1080 poisoning. In each of three areas, possum density and tree condition were monitored at 2-7 poisoned sites and 1-3 unpoisoned sites (each 150-250 ha in area). Trap Catch Indices (TCIs) of possum density were much reduced after poisoning, but usually recovered quickly to near pre-control levels within 6 years. The overall mortality of possum-preferred tree species was about 25% lower at poisoned sites than at unpoisoned sites, but this varied between species. Browse levels initially fell sharply at most sites, but with greater declines at the poisoned sites. Browse pressure then increased again as possum numbers increased to previous levels. Canopy condition (as indexed by % Foliar Cover; FCI) increased at both poisoned and unpoisoned sites, but more so at the poisoned sites. Foliar cover of some the most common and widespread species such as kāmahi (Weinmannia racemosa), māhoe (Melicytus ramiflorus) and tawa (Beilschmedia tawa) continued to increase (i.e. recover from presumed previous defoliation) even when the possum numbers had substantially recovered. Although the interactions between possums and their food supply are complex, possum control does reduce possum browse, and therefore tree defoliation and, ultimately, tree mortality. Importantly, we infer that reducing possum density by 60% will usually be sufficient to protect most of the possum-preferred tree species we studied.

The Effect Of Possum Control On Northern Rata In Tararua Forest Park

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Author : Philippa N. Crisp
language : en
Publisher:
Release Date : 2001

The Effect Of Possum Control On Northern Rata In Tararua Forest Park written by Philippa N. Crisp and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Endangered plants categories.

Northern rata (Metrosideros robusta) is thought to have undergone a large contraction in its natural distribution in Wellington Conservancy and possum browse has been implicated in this decline. The condition of northern rata trees was assessed at two locations in Tararua Forest Park where possums are being controlled on a seven-year rotation. These two locations differed in the time since possum control had occurred (one year and two years since control). Trees were also assessed in nearby areas where possums are not being controlled. It was found that northern rata trees in the area that had received possum control two years before assessment were in a better condition than those that grew in areas where no possum control had been undertaken. Differences between the two treated areas (one year and two years since control) were not significant for three of the four tree condition scores. It appears that improvement in northern rata following possum control is not consistently evident until two years after control has occurred, although a trend towards improvement in tree condition with time was evident. The results suggest that northern rata is a good indicator species for assessing possum impacts and the techniques used here may aid management decisions about an appropriate rotation time for possum control to protect northern rata from possum browsing.

Improving Conventional Control Of Possums

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Author :
language : en
Publisher:
Release Date : 1996

Improving Conventional Control Of Possums written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Trichosurus vulpecula categories.

Protecting Forest And Marine Biodiversity

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Author : Ed Couzens
language : en
Publisher: Edward Elgar Publishing
Release Date : 2017-11-24

Protecting Forest And Marine Biodiversity written by Ed Couzens and has been published by Edward Elgar Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-24 with Law categories.

This timely book contributes to discussions on the best legal practices to use to promote conservation, protection and sustainable use of biological diversity in forest and marine areas. The breadth of issues explored across these two themes is immense, and the book identifies both key differences, and striking commonalities between them.

Life Of Marsupials

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Author : C. Hugh Tyndale-Biscoe
language : en
Publisher: CSIRO PUBLISHING
Release Date : 2005

Life Of Marsupials written by C. Hugh Tyndale-Biscoe and has been published by CSIRO PUBLISHING this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Nature categories.

In Life of Marsupials, one of the world's leading experts explores the biology and evolution of this unusual group - with their extraordinary diversity of forms around the world - in Australia, New Guinea and South America. -back cover.

Possums

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Author : Anne Kerle
language : en
Publisher: UNSW Press
Release Date : 2001

Possums written by Anne Kerle and has been published by UNSW Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Nature categories.

Possums are the most common arboreal mammals in Australia. This book is concerned with the "larger" possums of Australia, those 13 species that belong to the Brushtail and Ringtail families, including the Greater Glider and the Spotted Cuscus.

The Effect Of Possum Control On Condition Of A Westland Rata Kamahi Forest

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Author : C. J. Pekelharing
language : en
Publisher:
Release Date : 1988

The Effect Of Possum Control On Condition Of A Westland Rata Kamahi Forest written by C. J. Pekelharing and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Forest ecology categories.

New Zealand Journal Of Zoology

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Author :
language : en
Publisher:
Release Date : 1974-03

New Zealand Journal Of Zoology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974-03 with categories.

The Handbook Of New Zealand Mammals

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Author : Carolyn King
language : en
Publisher: CSIRO PUBLISHING
Release Date : 2021-01-20

The Handbook Of New Zealand Mammals written by Carolyn King and has been published by CSIRO PUBLISHING this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-20 with Science categories.

The Handbook of New Zealand Mammals is the only definitive reference on all the land-breeding mammals recorded in the New Zealand region (including the New Zealand sector of Antarctica). It lists 65 species, including native and exotic, wild and feral, living and extinct, residents, vagrants and failed introductions. It describes their history, biology and ecology, and brings together comprehensive and detailed information gathered from widely scattered or previously unpublished sources. The description of each species is arranged under standardised headings for easy reference. Because the only native land-breeding mammals in New Zealand are bats and seals, the great majority of the modern mammal fauna comprises introduced species, whose arrival has had profound effects both for themselves and for the native fauna and flora. The book details changes in numbers and distribution for the native species, and for the arrivals it summarises changes in habitat, diet, numbers and size in comparison with their ancestral stocks, and some of the problems they present to resource managers. For this third edition, the text and references have been completely updated and reorganised into Family chapters. The colour section includes 14 pages of artwork showing all the species described and their main variations, plus two pages of maps.