Habitat relationships of the mahogany glider, Petaurus gracilis, and the sugar glider, Petaurus breviceps

2000 ◽  
Vol 27 (1) ◽  
pp. 39 ◽  
Author(s):  
Stephen M. Jackson
Keyword(s):  
Canopy Cover ◽  
Acacia Mangium ◽  
Adjacent Area ◽  
Entire Study ◽  
Fragmented Forest ◽  
Eucalyptus Pellita ◽  
Continuous Forest ◽  
Sugar Glider ◽  
Food Species ◽  
Petaurus Breviceps

Trapping data of the mahogany glider, Petaurus gracilis, and the sugar glider, Petaurus breviceps, in sympatry, in north Queensland, were analysed with vegetation variables to determine the habitat relationships of these two species. The study area contained a trapping grid (80 traps) within an area of continuous forest and trapping transects within an adjacent area of fragmented forest (44 traps). The mahogany glider was trapped more often at 43 of the 124 locations (38 in the continuous and 5 in the fragmented forest), with the sugar glider dominant at 46 locations (18 in the continuous forest and 28 in the fragmented forest). The remaining 27 trap locations where gliders were caught did not favour either species. Eight trap locations within riparian rainforest had no captures of either species. The presence of mahogany gliders was significantly correlated with the presence of Corymbia clarksoniana, Eucalyptus platyphylla, the absence of Corymbia intermedia and Acacia mangium, and a small mid and upper canopy cover. In contrast, the presence of sugar gliders was most correlated with a large number of stems. When the presence of the mahogany glider was compared with that of the sugar glider with respect to various habitat variables for the entire study area, the mahogany glider was most associated with the presence of C. clarksoniana, Eucalyptus pellita, Lophostemon suaveolens, Melaleuca dealbata and a reduced lower and upper canopy. In contrast, the sugar glider was most associated with C. intermedia, A. mangium, a large number of potential food species, rainforest species and a dense mid and upper canopy cover.

Near infrared spectroscopy of Eucalyptus pellita for foliar nutrients and the potential for real-time monitoring of trees in fertiliser trial plots

2021 ◽  
pp. 096703352110079
Author(s):  
Agustan Alwi ◽  
Roger Meder ◽  
Yani Japarudin ◽  
Hazandy A Hamid ◽  
Ruzana Sanusi ◽  
...  
Keyword(s):  
Near Infrared ◽  
Acacia Mangium ◽  
Nir Spectroscopy ◽  
Nutrient Status ◽  
Significant Loss ◽  
Eucalyptus Pellita ◽  
Operational Decision Making ◽  
Fertiliser Application ◽  
Planting Distance

Eucalyptus pellita F. Muell. has become an important tree species in the forest plantations of SE Asia, and in Malaysian Borneo in particular, to replace thousands of hectares of Acacia mangium Willd. which has suffered significant loss caused by Ceratocystis manginecans infection in Sabah, Malaysia. Since its first introduction at a commercial scale in 2012, E. pellita has been planted in many areas in the region. The species replacement requires new silvicultural practices to induce the adaptability of E. pellita to grow in the region and this includes relevant research to optimise such regimes as planting distance, pruning, weeding practices and nutrition regimes. In this present study, the nutritional status of the foliage was investigated with the aim to develop near infrared spectroscopic calibrations that can be used to monitor and quantify nutrient status, particularly total foliar nitrogen (N) and phosphorus (P) in the field. Spectra acquired on fresh foliage in situ on the tree could be used to predict N and P with accuracy suitable for operational decision-making regards fertiliser application. If greater accuracy is required, spectra acquired on dry, milled foliage could be used to predict N and P within a relative error of 10% (R2c, r2CV, RMSEP, RPD = 0.77, 0.71, 0.02 g 100/g, 1.9 for foliar P and = 0.90, 0.88, 0.21 g 100/g, 3.0 for foliar N on dry, milled foliage). The ultimate application of this is in situ nutrient monitoring, particularly to aid longitudinal studies in fertiliser trial plots and forest operations, as the non-destructive nature of NIR spectroscopy would enable regular monitoring of individual leaves over time without the need to destructively sample them. This would aid the temporal and spatial analysis of field data.

Use of Tree Hollows by Two Sympatric Gliding Possums, The Squirrel Glider, Petaurus norfolcensis and The Sugar Glider, P. breviceps.

1998 ◽  
Vol 20 (1) ◽  
pp. 79
Author(s):  
B.J. Traill ◽  
A. Lill
Keyword(s):  
Artificial Nest ◽  
Nest Boxes ◽  
Forestry Practices ◽  
Tree Hollows ◽  
Sugar Glider ◽  
Squirrel Glider ◽  
Petaurus Breviceps ◽  
Artificial Nest Boxes

Populations of the Squirrel Glider, Petaurus norfolcensis and the Sugar Glider, P. breviceps, are often sympatric and the two species are potential competitors for tree hollows. Their use of hollows and artificial nest-boxes was examined in a Box-Ironbark forest where natural hollows are scarce due to past forestry practices. We found gliders used hollows in the boles and branches of trees and in coppicing stumps. There was considerable interspecific overlap in the use of hollows and nest-boxes, both by gliders and other birds and mammals. Both gliders preferred hollows and nest-boxes with narrow entrances (<50 mm diameter). Petaurus breviceps preferred nest-boxes and possibly natural tree hollows with entrances too narrow for the larger P. norfolcensis. When abundant nest-boxes of this type were introduced at the study site, P. breviceps numbers increased and then decreased when the nest-boxes were removed. The results suggest that the larger P. norfolcensis monopolise the best available hollows. Petaurus breviceps numbers may have been limited by a lack of suitable hollows.

Effects of variable-intensity logging on mammals, reptiles and amphibians at Waratah Creek, southeastern New South Wales

1998 ◽  
Vol 4 (4) ◽  
pp. 326 ◽  
Author(s):  
Rodney P. Kavanagh ◽  
Garry A. Webb
Keyword(s):  
Canopy Cover ◽  
Basal Area ◽  
Managed Forests ◽  
Variable Intensity ◽  
South Wales ◽  
Arboreal Marsupials ◽  
Sugar Glider ◽  
Before And After ◽  
Original Tree ◽  
Intensively Managed

Populations of arboreal marsupials, small ground-dwelling mammals, reptiles and amphibians were assessed in forest before and after logging. Different levels of canopy retention were specified to estimate the effect of varying intensities of logging on these fauna. The logging treatments imposed were; unlogged, and the retention of approximately 72%, 58% and 30% of the original canopy cover. This corresponded to 62%, 52% and 21 % retention of the original tree basal area on each logged area. The objectives of the study were to determine the sensitivity of species to logging, both in terms of the intensity of the initial impact and in terms of the time to recovery following disturbance, and to develop methods for managing areas within wood production forests where special wildlife values have been identified. A total of 53 species was recorded in the 500 ha study area, only 18 (34.0%) of which were abundant enough for assessments to be made about the effects of logging. The arboreal marsupials, in particular the Greater Glider Petauroides volans, were among the species more sensitive to logging disturbance. The small, ground-dwelling mammals and the reptiles that were sampled adequately in this study appeared to be relatively unaffected by logging or they recovered quickly (most within eight years, and probably all within 10?15 years) following logging. Despite a large survey effort, insufficient data were available to assess the effects of logging on most species of frogs, although two species may have been advantaged. The species requiring management consideration include those that declined as a result of logging, but which had not recovered within eight years (the Greater Glider, the Yellow-bellied Glider Petaurus australis, the Sugar Glider P. breviceps, and the skink Niveoscincus coventryi), the species that declined in both logged and unlogged areas (the frogs Pseudophryne bibronii, Limnodynastes peronii, Geocrinia victoriana and Heleioporus australiacus), and the species for which the data were too sparse to make any assessments. It is unclear when the species most disadvantaged by integrated logging, that is, the large gliding possums, will recolonize the logged areas. The persistence of these gliders was attributed to the retention of unlogged forest within and adjacent to logged areas. This highlights the role of riparian reserves ("wildlife corridors") and filter strips in retaining residual populations of the Greater Glider and the Yellow-bellied Glider until the logged areas are suitable for recolonization, and the importance of determining the effective size for these unlogged reserves. The data were not sufficient to determine conclusively whether reduced logging intensity at the levels applied was a better option than standard logging practices for managing populations of gliding possums in these forests. The results of this study, which was conducted in a forested landscape that was multi-aged but predominantly unlogged, may not be comparable to intensively-managed forests in which there is a lower proportion of unlogged forest and where multiple logging events have occurred.

Photopollution impacts on the nocturnal behaviour of the Sugar Glider (Petaurus breviceps)

2007 ◽  
Vol 13 (3) ◽  
pp. 171 ◽  
Author(s):  
Shannon M. Barber-Meyer
Keyword(s):  
Industrial Development ◽  
Migratory Birds ◽  
Sea Turtle ◽  
Light Pollution ◽  
Activity Levels ◽  
High Luminosity ◽  
Existing Problems ◽  
Sugar Glider ◽  
Dark Regime ◽  
Petaurus Breviceps

Night light pollution is an important environmental problem impacting on many animals including a variety of insects, amphibians, reptiles, birds, and mammals. While some impacts of night light pollution are well-known such as misorientation of sea turtle hatchlings and deaths of migratory birds, other less obvious impacts on reproduction, communication, competition, and predation have recently been reported. As some natural areas in New Guinea and Australia face agricultural and industrial development, conflicts between wildlife and photopollution will add to existing problems of habitat fragmentation and degradation. I report on the photopollution impacts on the nocturnal behavior of the sugar glider (Petaurus breviceps). Captive sugar gliders were monitored using a "super nightshot" camcorder for baseline nocturnal behaviour following a 12 hour dayligh/12 hour dark regime. Treatment consisted of 12 hour dayligh/12 hour simulated ambient low and high luminosity street light photopollution (average 7.0 and 12.0 lux). Over 575 sugar glider-hours were analyzed. The results show marked behavioural impacts under high luminosity treatment, even 7.0 lux reduced foraging time. This is the first report of photopollution impacts on sugar glider foraging and activity levels. Further research, particularly with wild populations, is needed to elucidate the extent of photopollution impacts on sugar gliders and their endangered and vulnerable relatives.

Listeria monocytogenesInfection in a Sugar Glider (Petaurus breviceps) - New Mexico, 2011

2014 ◽  
Vol 62 (4) ◽  
pp. 254-257 ◽  
Author(s):  
M. Nichols ◽  
N. Takacs ◽  
J. Ragsdale ◽  
D. Levenson ◽  
C. Marquez ◽  
...  
Keyword(s):  
New Mexico ◽  
Sugar Glider ◽  
Petaurus Breviceps

Population dynamics and life history of the mahogany glider, Petaurus gracilis, and the sugar glider, Petaurus breviceps, in north Queensland

2000 ◽  
Vol 27 (1) ◽  
pp. 21 ◽  
Author(s):  
Stephen M. Jackson
Keyword(s):  
Life History ◽  
Litter Size ◽  
Average Density ◽  
Head Width ◽  
Fragmented Habitat ◽  
Average Litter Size ◽  
Sugar Glider ◽  
History Of ◽  
Petaurus Breviceps ◽  
Natality Rate

Mahogany gliders, Petaurus gracilis, and sugar gliders, Petaurus breviceps, were trapped in an area of open woodland in north Queensland between 1994 and 1996 to examine their population ecology and life history. This study area contained two smaller areas, one consisting of continuous habitat and the other an area of fragmented habitat adjacent to the continuous habitat. Within the continuous area, the mahogany glider had an average density of 0.24 ha–1 whereas the sugar glider had an average density of 0.27 ha–1. In contrast, the density of mahogany gliders in the fragmented habitat averaged only 0.16 ha–1 whereas the density of sugar gliders was higher, at 0.46 ha–1. Both the mahogany glider and the sugar glider showed sexual dimorphism in their weight, head length and head width. The average body weight of both species fluctuated throughout the year with no consistent pattern. The mahogany glider showed a distinct breeding season, with births being recorded between April and October, whereas the sugar glider showed no pattern, with births being recorded during all months except February and April. During the study, all adult females of both species were observed to have bred, with an average litter size of 1.55 and a natality rate of 2.09 for the mahogany glider, and an average litter size of 1.83 and a natality rate of 2.14 for the sugar glider. The sugar glider was able to raise two litters of young within a single year whereas a second litter was raised by the mahogany glider only if the first litter was lost.

Geographic variation in the diet of the powerful owl (Ninox strenua) at a local scale

2013 ◽  
Vol 61 (5) ◽  
pp. 372 ◽  
Author(s):  
Rohan J. Bilney
Keyword(s):  
Coastal Forests ◽  
Forest Sites ◽  
Sugar Glider ◽  
Pseudocheirus Peregrinus ◽  
The Common ◽  
Dietary Variation ◽  
Conservation Concern ◽  
Petaurus Breviceps ◽  
Ringtail Possum

This study reports the diet of the powerful owl (Ninox strenua) in East Gippsland, from a dataset of 2009 vertebrate prey items collected from 53 sites. Mammals dominated the diet at all sites, but birds were also consumed regularly. The greater glider (Petauroides volans) was the dominant dietary item across the region in terms of both frequency of consumption and biomass contribution. There was geographical dietary variation between coastal and foothill forest sites, with the sugar glider (Petaurus breviceps) and birds consumed more frequently in foothill forests, whereas the common ringtail possum (Pseudocheirus peregrinus) was frequently consumed only in coastal forests. Typically, a higher percentage of powerful owl diet comprised birds closer to cleared land. The dietary reliance upon hollow-dependent mammals in foothill forests (averaging >70%) is of conservation concern, especially when non-hollow-dependent prey are rare. Forest management activities, especially logging, that reduce densities of hollow-bearing trees in the landscape are therefore likely to decrease the long-term carrying capacity of the landscape for the powerful owl.

Feeding Behavior and Nutrition of the Sugar Glider (Petaurus breviceps)

2009 ◽  
Vol 12 (2) ◽  
pp. 209-215 ◽  
Author(s):  
Ellen S. Dierenfeld
Keyword(s):  
Feeding Behavior ◽  
Sugar Glider ◽  
Petaurus Breviceps
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