scholarly journals Failing to conserve Leadbeater's Possum and its Mountain Ash forest habitat

2018 ◽  
Vol 39 (3) ◽  
pp. 443-448 ◽  
Author(s):  
David Blair ◽  
David Lindenmayer ◽  
Lachlan McBurney
Keyword(s):  
Forest Habitat ◽  
Mountain Ash ◽  
Leadbeater's Possum

Economics of a nest-box program for the conservation of an endangered species: a reappraisal

2001 ◽  
Vol 31 (11) ◽  
pp. 1992-2003 ◽  
Author(s):  
Daniel A Spring ◽  
Michael Bevers ◽  
John OS Kennedy ◽  
Dan Harley
Keyword(s):  
Net Present Value ◽  
Population Recovery ◽  
Optimal Management ◽  
Present Value ◽  
Eucalyptus Regnans ◽  
Nest Boxes ◽  
Mountain Ash ◽  
Local Abundance ◽  
Leadbeater's Possum

An optimization model is developed to identify timing and placement strategies for the installation of nest boxes and the harvesting of timber to meet joint timber–wildlife objectives. Optimal management regimes are determined on the basis of their impacts on the local abundance of a threatened species and net present value (NPV) and are identified for a range of NPV levels to identify production possibility frontiers for abundance and NPV. We apply the model to a case study focusing on an area of commercially productive mountain ash (Eucalyptus regnans F. Muell.) forest in the Central Highlands region of Victoria, Australia. The species to be conserved is Leadbeater's possum (Gymnobelideus leadbeateri McCoy), which is locally limited by a scarcity of nesting hollows. The modeling is exploratory but indicates that nest boxes may offer a promising population recovery tool if consideration is taken of their placement and areal extent through time.

The use of nest boxes by arboreal marsupials in the forests of the Central Highlands of Victoria

2003 ◽  
Vol 30 (3) ◽  
pp. 259 ◽  
Author(s):  
D. B. Lindenmayer ◽  
C. I. MacGregor ◽  
R. B. Cunningham ◽  
R. D. Incoll ◽  
M. Crane ◽  
...  
Keyword(s):  
Brushtail Possum ◽  
Nest Box ◽  
Nest Boxes ◽  
Arboreal Marsupials ◽  
Eastern Australia ◽  
Mountain Ash ◽  
The Common ◽  
Central Highlands ◽  
Leadbeater's Possum ◽  
Ringtail Possum

The results are reported of a nest-box study conducted in two locations in the mountain ash (Eucalyptus regnans) forests of the Central Highlands of Victoria (south-eastern Australia) to compare usage of different nest-box designs located at different heights in trees. A total of 96 nest boxes was established using a rigorous experimental design – two regions (Powelltown and Toolangi State Forests), two forest age classes (20-year post-logging regrowth and 60-year fire- and salvage-logging regrowth), two nest-box designs (large boxes with large entrance holes and small boxes with small entrance holes), and two heights at which nest boxes were attached to trees (3 m and 8 m above the ground). The study entailed setting out four nest boxes at each of 24 sites to meet the design criteria. Evidence of occupancy by vertebrates was recorded in a total of 19 of 96 boxes on 11 of 24 sites site during regular inspections over more than three years. Thirteen boxes were used by Leadbeater's possum (Gymnobelideus leadbeateri), six by the mountain brushtail possum (Trichosurus cunninghami) and seven by the common ringtail possum (Pseudocheirus peregrinus). The common ringtail possum and mountain brushtail possum were seen only in high–large boxes but Leadbeater's possum used all but the low–large boxes. There was evidence of spatial dependence in usage patterns, with all four boxes at a given site showing signs of eventually being occupied. Only two nest boxes located in mountain ash forest regenerating after the 1939 wildfires were occupied. Relatively limited use of nest boxes supports concerns about the use of a nest box over large scales and long timeframes as an effective recovery tool for species threatened by the loss and subsequent shortage in the numbers of naturally occurring hollows.

Comment — Economics of a nest-box program for the conservation of an endangered species: a re-appraisal

2002 ◽  
Vol 32 (12) ◽  
pp. 2244-2247 ◽  
Author(s):  
D B Lindenmayer ◽  
C MacGregor ◽  
P Gibbons
Keyword(s):  
Eucalyptus Regnans ◽  
Nest Box ◽  
Nest Boxes ◽  
Forestry Practices ◽  
Patterns Of Use ◽  
Large Numbers ◽  
Mountain Ash ◽  
Tree Retention ◽  
Ecologically Sustainable ◽  
Leadbeater's Possum

Spring et al. (D.A. Spring, M. Bevers, J.O.S. Kennedy, and D. Harley. 2001. Can. J. For. Res. 31: 1992–2003) recently published a paper on the economics of a nest-box program for the endangered arboreal marsupial, Leadbeater's possum (Gymnobelideus leadbeateri) in southeastern Australian forests. While their paper is a useful one, there are some important limitations of nest-box programs that need to be highlighted. In the case of Leadbeater's possum, we have undertaken extensive nest-box studies in Victoria mountain ash (Eucalyptus regnans F. Muell.) forests, where the vast majority of populations of the species now occur. Although large numbers of nest boxes have been deployed, very few have actually been occupied, which is a major problem since the effectiveness of any nest-box program will depend on patterns of use by the target species. Given very low levels of nest-box occupancy, harvesting regimes such as those that lead to on-site tree retention are needed to better conserve hollow-dependent species like Leadbeater's possum. Moreover, the need for nest boxes in the first place indicates that logging practices are presently not ecologically sustainable, and modified forestry practices need to be adopted.

Use of Den Trees by Leadbeater's Possum (Gymnobelideus Leadbeateri)

1996 ◽  
Vol 44 (6) ◽  
pp. 625 ◽  
Author(s):  
DB Lindenmayer ◽  
RA Meggs
Keyword(s):  
Radio Tracking ◽  
Eucalyptus Regnans ◽  
Breeding Female ◽  
South Eastern ◽  
Risk Of Predation ◽  
Eastern Australia ◽  
Mountain Ash ◽  
Central Highlands ◽  
Leadbeater's Possum ◽  
South Eastern Australia

The results of a radio-tracking study of the uses of den trees by Leadbeater's possum (Gymnobelideus leadbeateri McCoy) at Cambarville in the mountain ash (Eucalyptus regnans) forests of the Central Highlands of Victoria, south-eastern Australia, are described. Animals were radio-tracked for three periods of 5-20 days in July 1990, November 1990 and July 1991. A total of 14 individuals was tracked and they occupied 11 different trees with hollows on the 10-ha study site. Preliminary findings showed that some animals moved between hollows in different trees, and most animals used two or more trees. The distances between utilised trees usually exceeded 50 m. Possible reasons for the den-swapping behaviour include attempts to either or both relieve burdens of ecto-parasites and to reduce the risk of predation. There were several examples, in each of the three radio-tracking periods, of two or more radio-collared adult breeding female animals simultaneously co-occupying the same nest tree. This result was different from some of the general findings of an earlier study of G. leadbeateri at Cambarville.

Development and assessment of quality of bread with addition of product of the processing of Amur mountain ash

2018 ◽  
Vol 0 (12) ◽  
pp. 52-55
Author(s):  
L.N. Fedyanina ◽  
◽  
E.S. Smertina ◽  
V.A. Lyakh ◽  
A.E. Elizarova ◽  
...  
Keyword(s):  
Mountain Ash

COMPARATIVE ANALYSIS OF BIOACTIVE SUBSTANCES CONTENT IN THE LEAVES AND FRUITS OF A ROWAN-TREE (SORBUS AUCUPARIA FRUCTUS) AND ASSESSMENT OF PROSPECTS IN MEDICINE AND PHARMACY

2020 ◽  
pp. 58-62
Author(s):  
Chernichkina A.D.
Keyword(s):  
Raw Materials ◽  
Wide Distribution ◽  
Biologically Active ◽  
Bioactive Substances ◽  
Plant Raw Materials ◽  
Mountain Ash ◽  
The Russian Federation ◽  
Materials Used ◽  
Active Substances ◽  
Pectin Substances

A large number of biologically active substances, organic acids, tannins, and pectin substances were detected during the study of fruits, leaves, and pulp of the fruits of mountain Ash. The content of these substances in leaves and pulp will significantly expand the arsenal of medicinal plant raw materials used. Given the wide distribution of mountain Ash in the territory of the Russian Federation, harvesting leaves from the same plants after harvesting the fruit and using pulp will make it possible to obtain new phytopreparations.

ИСПОЛЬЗОВАНИЕ РАСТИТЕЛЬНЫХ АДАПТОГЕНОВ ПРИ ДЕФИЦИТЕ ЖЕЛЕЗА У КОРОВ

2020 ◽  
pp. 49-51
Author(s):  
N.I. YAROVAN ◽  
E.N. RYZHKOVA ◽  
Y.V. KARTAMYSHEVA
Keyword(s):  
Milk Production ◽  
Free Radical Oxidation ◽  
Sea Buckthorn ◽  
Herbal Remedies ◽  
Control Group ◽  
Iron Level ◽  
Industrial Complex ◽  
Serum Iron Level ◽  
Group I ◽  
Mountain Ash

Представлены результаты изучения влияния растительных адаптогенов на основе облепихи крушиновидной, боярышника обыкновенного, рябины обыкновенной и каштана конского на уровень железа при его дефиците, оксидантно-антиоксидантный статус и молочную продуктивность коров, содержащихся в условиях промышленного комплекса. Были сформированы 5 групп животных по 10 голов. Животные I (контрольной) группы получали основной рацион (ОР) II ОР измельченные семена каштана конского 50 г на 1 голову в сутки III ОР измельченные семена каштана конского 30 г высушенные плоды рябины обыкновенной 20 г на 1 голову в сутки IV ОР цельнозамороженные плоды облепихи крушиновидной 200 г на 1 голову в сутки V ОР цельнозамороженные плоды облепихи крушиновидной 130 г высушенные плоды боярышника обыкновенного 40 г на 1 голову в сутки. В опытных группах II, III, IV и V обнаружено увеличение содержания железа в сыворотке крови к 20-му дню эксперимента на 87, 78, 41 и 58, соответственно. Наблюдалось постепенное снижение уровня свободно-радикального окисления к 30-му дню опыта у коров этих групп. Уровень малонового диальдегида (МДА) снизился на 37,5, 13,4, 20 и 20, соответственно. Увеличение среднесуточного удоя отмечено у коров, получавших комплекс растительных средств из семян каштана плодов рябины (на 7,4) и плодов облепихи плодов боярышника (на 7,5).The resalts of impact studies of plant-based adaptogens (sea-buckthorn, hawthorn, mountain ash and chestnut) on serum iron level in cows, oxidative-antioxidant status and milk production of cattle contained in the industrial complex were shown. 5 groups were formed with 10 animals each: 1st control group (I) - animals received the main diet (MD) 2nd group (II) - MD chestnut seeds (50 g per 1 animal) 3rd group (III) - MD chestnut seeds/ mountain ash (30 g/20 g per 1 animal) 4th group (IV) - MD sea-buckthorn fruits (200 g per 1 animal) 5th group (V) - MD sea-buckthorn fruits/ hawthorn fruits (130 g /40 g per 1 animal). In experimental groups II, III, IV и V, an increase in the content of iron in blood serum by the 20th day of the experiment by 87, 78, 41, 58, respectively, was shown. There was also a gradual decrease in the free radical oxidation level by the 30th day of the experiment in cows of experimental groups II, III, IV и V, the malondialdehyde level (MDA) decreased by 37.5, 13.4, 20, 20 respectively compared to the initial values. The highest average daily milk production was observed in cows receiving a complex of herbal remedies from chestnut seeds mountain ash fruits (an increase by 7.4) and sea-buckthorn fruits hawthorn fruits (an increase by 7.5).

Sign in / Sign up

Export Citation Format

Share Document