Roost Selection by Goulds Long-Eared Bat, Nyctophilus-Gouldi Tomes (Chiroptera, Vespertilionidae), in Logged Forest on the South Coast of New South-Wales

1988 ◽  
Vol 15 (4) ◽  
pp. 375 ◽  
Author(s):  
D Lunney ◽  
J Barker ◽  
D Priddel ◽  
M Oconnell

Radiotelemetry was used to track 18 Nyctophilus gouldi to roosts in 38 trees within a logged forest. The species and sizes of trees selected by the bats were compared to trees measured in six randomly located plots in each of four major habitats. Only the unlogged gullies provided the species of trees required by the bats for roosting. Of these, the bats showed strongest preference for those trees with a diameter greater than 80 cm. As the first logging cycle removed many suitable roosts, we conclude that the second logging cycle, due before the turn of tbe century, will have a major deleterious impact on the local survival of N. gouldi unless gullies remain unlogged. This would require the redefinition of gullies in the forest management plan to include all drainage lines.

2021 ◽  
Vol 69 (2) ◽  
pp. 102
Author(s):  
Keith L. McDougall ◽  
Penelope J. Gullan ◽  
Phil Craven ◽  
Genevieve T. Wright ◽  
Lyn G. Cook

The association of an armoured scale insect (a diaspidid) with dieback of a population of a native cycad (Macrozamia communis L.A.S.Johnson) was investigated on the south coast of New South Wales. The diaspidid was found to be undescribed but morphologically similar to oleander scale – here we call it Aspidiotus cf. nerii. It is probably native to Australasia and its current known distribution is within Murramarang National Park (MNP). Aspidiotus cf. nerii has been abundant on symptomatic M. communis at MNP over at least the past decade and has spread to new parts of the park. In population studies of infested and uninfested areas we found that, although both areas had populations with reverse J curves showing dominance of seedlings, mortality of seedlings and caulescent plants was significantly higher in infested sites. Infested areas had been burnt less frequently than uninfested areas. Fire does not appear to eradicate the diaspidid but may reduce its effects enough for plants to recover. We recommend further research into the use of fire as a management tool. Although other factors may be contributing to the severity of the dieback, we suggest there is sufficient evidence for the diaspidid to be regarded as the primary cause of dieback in M. communis in MNP, regardless of its origin. Given the occurrence of similar diaspidids on cultivated plants in botanic gardens, translocation of threatened Macrozamia species using plants grown in nurseries should be undertaken with extreme caution.


1998 ◽  
Vol 20 (1) ◽  
pp. 9
Author(s):  
R. Goldingay ◽  
G. Daly

Surveys of arboreal and terrestrial mammals were conducted across four State Forests in south-east New South Wales encompassing 80 000 ha. Methods used included spotlighting, Elliott trapping, pitfall trapping, hair-tubing and predator scat analysis. The survey included a plot-based approach and the targeting of areas containing the potential habitat of endangered species. Seven species of arboreal marsupial were detected during spotlighting. The greater glider (Petauroides volans) was significantly more abundant in moist forest compared to dry forest. Its density in moist forest was twice as high in unlogged compared to logged forest and is equivalent to the highest recorded in any forest in NSW. Other arboreal species were less abundant. The yellow-bellied glider (Petaurus australis), which is Threatened in NSW, was detected at only two sites despite the occurrence of suitable habitat throughout the study area. Eight species of native terrestrial mammals were detected. The tiger quoll (Dasyurus maculatus), which is Threatened in NSW, appears to be more common in the southern part of the study area adjoining large areas of National Park, than in other State Forests of south-east NSW. Continued analysis of predator scats is required to determine whether several other species of Threatened terrestrial mammal occur in these forests.


2006 ◽  
Vol 14 (3) ◽  
pp. 295-304
Author(s):  
Jacqueline Mills

AbstractIn contemporary times, wildlife managers attempt to provide solutions to problems arising from conflicting uses of the environment by humans and nonhuman animals. Within the Kangaroo Management Zones of New South Wales (NSW), the commercial culling "solution" is one such attempt to perpetuate kangaroo populations on pastoral land while supporting farmers in continuing inefficient sheep farming. Because wildlife management rests on a distinction between the "nature" of humans and animals, then humanist attention to standards of individual welfare need not interrupt the process whereby individual animals are killed within an economic framework designed to improve habitat management for the conservation of their populations. Building on Thorne's (1998) discussion of the meanings scripted onto individual kangaroo bodies, this paper explores the utilitarian underpinnings of the commercialization approach and considers the ethical implications of constructing the population as resource, even if this results in an improvement in the welfare of individual kangaroos.


1994 ◽  
Vol 34 (7) ◽  
pp. 1069 ◽  
Author(s):  
E Humphreys ◽  
WS Meyer ◽  
SA Prathapar ◽  
DJ Smith

This paper reviews field measurements of evapotranspiration from rice (ET rice) in the Murrumbidgee Valley of southern New South Wales. The results are compared with US Class A open pan evaporation (E pan) at CSIRO Griffith, and with reference evapotranspiration (ETo) calculated using a locally calibrated Penman equation. Both methods (+ETrice = +Epan or +ETrice = +ETo) give good estimates of total evapotranspiration from flooded rice over the ponded season of about 5 months, from October to February. Variation between seasons in total ETo, rainfall, and ETo minus rainfall is large. Over 32 years, total seasonal ETo varied by a factor of 1.5, while rainfall varied >10-fold. The irrigation water requirement for rice +(ETo - rainfall) varied from 685 mm in 1992-93 to 1350 mm in 1990-91. This large variation highlights the need to adjust the rice water use limit (16 ML/ha or 1600 mm) on a seasonal basis, to detect and eliminate high water use paddocks where percolation to the groundwater or surface runoff is excessive (>2 ML/ha). On average, an irrigation requirement of 10.5 ML/ha is needed to replace net evaporative loss +(ETo - rainfall) for rice flooded for 5 months, October-February. Monthly totals of ETo are compared for several locations within the rice-growing areas of southern New South Wales, and differences between locations are found to be small and not significant. This reflects the strong dependence of evaporation on radiant energy, which is unlikely to vary spatially to a significant extent across the region. ETo calculated from meteorological data collected at CSIRO Griffith therefore provides a definitive basis for estimating evapotranspiration from rice in southern New South Wales. Furthermore, CSIRO Griffith has a computerised meteorological data base going back to the 1930s. Current meteorological data and historical records are readily available by contacting the Metdata Manager. Therefore, the case is made for using CSIRO Griffith ETo as the reference for estimating evapotranspiration from rice in southern New South Wales. This study provides farmers, Land and Water Management Plan groups, and policy makers with a tool that can be used, on a yearly basis, to evaluate rice paddock water use efficiency. It should be adopted to confine rice growing to the least permeable soils.


1973 ◽  
Vol 19 (4) ◽  
pp. 465-470 ◽  
Author(s):  
M. A. Etheridge ◽  
D. M. Ransom ◽  
P. F. Williams ◽  
C. J. L. Wilson

1995 ◽  
Vol 72 (1) ◽  
pp. 71-80 ◽  
Author(s):  
I.A. Neave ◽  
S.M. Davey ◽  
J.J. Russell-Smith ◽  
R.G. Florence

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