Temporal activity patterns of the swamp rat (Rattus lutreolus) and other rodents in north-eastern New South Wales, Australia

2012 ◽  
Vol 34 (2) ◽  
pp. 223 ◽  
Author(s):  
Paul D. Meek ◽  
Frances Zewe ◽  
Greg Falzon

The activity patterns and partitioning of time by four small mammal species, with a focus on the swamp rat (Rattus lutreolus) in north-eastern New South Wales, was investigated using camera trap data from two studies. Analysis was carried out on 1079 camera trap events over 1530 camera trap–nights or 36 720 h of camera trap deployment in the field. The activity patterns of Rattus lutreolus were distinctly diurnal with crepuscular peaks of activity but this differed between sites and when in the presence of competitors. The Hastings River mouse (Pseudomys oralis) and the bush rat (Rattus fuscipes) displayed typical bimodal patterns of nocturnal activity. Antechinus were mostly nocturnal but were occasionally active during the day. These data indicate that where species of Muridae co-occur, diurnal time partitioning by R. lutreolus may reduce competition for food resources. It also confirms the speculation that R. lutreolus displays diurnal behaviour, albeit dependent on the presence of other murids.

1987 ◽  
Vol 14 (3) ◽  
pp. 275 ◽  
Author(s):  
D Lunney ◽  
E Ashby

A population of the white-footed dunnart Sminthopsis leucopus was studied from 1981 to 1983 in a forest that had been logged in 1979, burnt in 1980, and was drought-affected throughout the study. S. leucopus bred in this disturbed habitat but did not persist when the vegetation regrew and became dense. Pouch young were present in August, September and October 1981. There was no evidence of polyoestry in the field, although breeding potential may have been suppressed by a combination of the drought and habitat change. There were few brown antechinus Antechinus stuartii present at any time. The population of the bush rat Rattus fuscipes increased as its preferred habitat of dense vegetation grew. An irruption of the house mouse Mus rnusculus in autumn 1982 coincided with a brief respite from the drought. The differing responses of these species to the same set of environmental conditions illustrates that no one management option in such forests will be optimal for all species of small mammals. The conclusion drawn here for the conservation of S. leucopus in forests subject to woodchip logging and fire is to stagger the forestry operations to ensure that not all parts of the forest are covered with dense regrowth at any one time.


2019 ◽  
Vol 41 (2) ◽  
pp. 283 ◽  
Author(s):  
Stephanie K. Courtney Jones ◽  
Katarina M. Mikac

Activity levels of spotted-tailed quolls were investigated using camera traps over 12 months. There were 33 independent camera trap photos with 17 individual quolls identified. Latency to initial detection was 40 days. Quolls were nocturnal/crepuscular, spending 35% of the day they were detected active. Highest activity levels were recorded in summer.


1977 ◽  
Vol 4 (3) ◽  
pp. 233 ◽  
Author(s):  
JL Barnett ◽  
RA How ◽  
WF Humphreys

Populations of small mammals were examined in a 6 yr Pinus taeda plantation (extended to include similar age P. radiata) and adjacent native rain forest in north-east New South Wales, Australia. Of the 6 species trapped, Rattus fuscipes was the only one with viable populations in both vegetation types. R. lutreolus, R. rattus and Mus musculus were restricted to the plantation; Melomys cervinipes and Antechinus stuartii (except for a few individuals) were confined to the native forest.


1987 ◽  
Vol 14 (2) ◽  
pp. 163 ◽  
Author(s):  
D. Lunney ◽  
B. Cullis ◽  
P. Eby

This study of the effects of logging on small mammals in Mumbulla State Forest on the south coast of New South Wales included the effects of a fire in November 1980 and a drought throughout the study period from June 1980 to June 1983. Rattus fuscipes was sensitive to change: logging had a significant impact on its numbers, response to ground cover, and recapture rate; fire had a more severe effect, and drought retarded the post-fire recovery of the population. The three species of dasyurid marsupials differed markedly in their response to ground cover, canopy cover, logging and fire. Antechinus stuartii was distributed evenly through all habitats and was not affected by logging, but fire had an immediate and adverse effect which was sustained by the intense drought. A. swainsonii markedly preferred the regenerating forest, and was not seen again after the fire, the failure of the population being attributed to its dependence on dense ground cover. Sminthopsis leucopus was found in low numbers, appeared to prefer forest with sparse ground cover, and showed no immediate response to logging or fire; its disappearance by the third year post-fire suggests that regenerating forest is inimical to the survival of this species. Mus musculus showed no response to logging. In the first year following the fire its numbers were still very low, but in the next year there was a short-lived plague which coincided with the only respite in the 3-year drought and, importantly, occurred in the intensely burnt parts of the forest. The options for managing this forest for the conservation of small mammals include minimising fire, retaining unlogged forest, extending the time over which alternate coupes are logged and minimising disturbance from heavy machinery.


2002 ◽  
Vol 106 (1) ◽  
pp. 57-69 ◽  
Author(s):  
R.L Pressey ◽  
G.L Whish ◽  
T.W Barrett ◽  
M.E Watts

2010 ◽  
Vol 2 (5) ◽  
pp. 1378-1399 ◽  
Author(s):  
Clement E. Akumu ◽  
Sumith Pathirana ◽  
Serwan Baban ◽  
Daniel Bucher

2002 ◽  
Vol 29 (3) ◽  
pp. 313 ◽  
Author(s):  
P. C. Catling ◽  
R. J. Burt ◽  
R. I. Forrester

Statistical models are presented of the distribution and abundance of ground-dwelling mammals in eucalypt forests in relation to environmental variables within an area of approximately 24 000 km2 in north-eastern New South Wales. Environmental variables are defined as climatic or topographic variables that may be useful to map the distribution of fauna. The environmental variables examined were season, temperature, rainfall, elevation, lithology, steepness of slope, position on slope, aspect and landform profile. The probability of recording some species was higher in spring than autumn and many species were in highest abundance in areas of low temperature (high elevation). Although aspect was a significant variable in a number of models, no species was absent from any aspect category. Mid-slopes down to and including creeks and drainage lines were particularly important for many species, as were areas with flatter terrain. Although we have modelled environmental variables only there will no doubt be longer-term interactions between habitat and environmental variables. Fundamentally, environmental variables will determine the type of habitat present at a site, and the distribution of canopy communities, at least, can be predicted from environmental variables. However, other studies have shown for ground-dwelling mammals that environmental variables contribute little and it is the state of the habitat locally, and particularly the understorey, that determines their presence and abundance at a site. The results are discussed in relation to similar models using habitat variables and in relation to the use of such models in the management of ground-dwelling fauna in forests.


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