Erosion of Access Tracks in Kalamunda National Park, Western Australia: Causes and management implications

2001 ◽  
Vol 32 (3) ◽  
pp. 343-357 ◽  
Author(s):  
Paul Gager ◽  
Arthur Conacher
2002 ◽  
Vol 15 (4) ◽  
pp. 565 ◽  
Author(s):  
B. E. Pfeil ◽  
L. A. Craven

Three new taxa of Glycine are described, namely Glycine pullenii B.E.Pfeil, Tindale & Craven and G.�aphyonota B.E.Pfeil from Bungle Bungle-Purnululu National Park, Western Australia, and G. hirticaulis subsp. leptosa B.E.Pfeil from the Top End of the Northern Territory. A key to Glycine Willd. in north-western Australia is provided. A range extension for G. falcata Benth. is noted.


Zootaxa ◽  
2009 ◽  
Vol 2029 (1) ◽  
pp. 1-70 ◽  
Author(s):  
DANNY TANG ◽  
BRENTON KNOTT

The Gnangara Mound is a 2,200 km 2 unconfined aquifer located in the Swan Coastal Plain of Western Australia. This aquifer is one of the most important ground water resources for the Perth Region and supports a number of groundwaterdependent ecosystems, such as the springs of Ellen Brook and root mat communities of the Yanchep Caves. Although freshwater copepods have been documented previously from those caves and springs, their specific identity were hitherto unknown. The current work formally identifies copepod samples collected from 23 sites (12 cave, three bore, five spring and three surface water localities) within the Gnangara Mound region. Fifteen species were documented in this study: the cyclopoids Australoeucyclops sp., Eucyclops edytae sp. nov., Macrocyclops albidus (Jurine, 1820), Mesocyclops brooksi Pesce, De Laurentiis & Humphreys, 1996, Metacyclops arnaudi (G. O. Sars, 1908), Mixocyclops mortoni sp. nov., Paracyclops chiltoni (Thomson, 1882), Paracyclops intermedius sp. nov. and Tropocyclops confinis (Kiefer, 1930), and the harpacticoids Attheyella (Chappuisiella) hirsuta Chappuis, 1951, Australocamptus hamondi Karanovic, 2004, Elaphoidella bidens (Schmeil, 1894), Kinnecaris eberhardi (Karanovic, 2005), Nitocra lacustris pacifica Yeatman, 1983 and Paranitocrella bastiani gen. et sp. nov. Tropocyclops confinis is recorded from Australia for the first time and A. (Ch.) hirsuta and E. bidens are newly recorded for Western Australia. The only copepod taxa endemic to the Gnangara Mound region are E. edytae sp. nov. (occurs primarily in springs and rarely in the Yanchep National Park Caves) and P. bastiani gen. et sp. nov. (confined to the Yanchep National Park Caves containing tuart root mats). Paracyclops chiltoni was the most common species, whilst T. confinis and N. l. pacifica were rarely encountered. Metacyclops arnaudi was the only taxon absent from ground waters. The copepod fauna recorded in the caves and springs of the Gnangara Mound region are comparable, with respect to species richness, endemicity and the varying degrees of dependency on ground water, to those reported from similar habitats in South Australia and Western Australia. Restoring the root mats and maintaining permanent water flow within the Yanchep Caves, as well as minimising urban development near the Ellen Brook Springs, are essential to protect the copepod species, particularly the endemic P. bastiani gen. et sp. nov. and E. edytae sp. nov., inhabiting these unique ground water environments.


Geoderma ◽  
2011 ◽  
Vol 162 (3-4) ◽  
pp. 365-377 ◽  
Author(s):  
Héctor Aguilera ◽  
Luis Moreno ◽  
María Emilia Jiménez-Hernández ◽  
Silvino Castaño ◽  
Almudena de la Losa

2004 ◽  
Vol 52 (4) ◽  
pp. 435 ◽  
Author(s):  
B. L. Shearer ◽  
C. E. Crane ◽  
A. Cochrane

This study compares, for the first time, variation in estimates of susceptibility of native flora to Phytophthora cinnamomi Rands among four databases and proposes an estimate of the proportion of the flora of the South-West Botanical Province of Western Australia that is susceptible to the pathogen. Estimates of the susceptibility of south-western native flora to P. cinnamomi infection were obtained from databases for Banksia woodland of the Swan Coastal Plain, jarrah (Eucalyptus marginata Donn. ex Smith) forest, the Stirling Range National Park and Rare and Threatened Flora of Western Australia. For the woodland, forest and national park databases, hosts were naturally infected in uncontrolled diverse natural environments. In contrast, threatened flora were artificially inoculated in a shadehouse environment. Considerable variation occurred within taxonomic units, making occurrence within family and genus poor predictors of species susceptibility. Identification of intra-specific resistance suggests that P. cinnamomi could be having a strong selection pressure on some threatened flora at infested sites and the populations could shift to more resistant types. Similar estimates of the proportion of species susceptible to P. cinnamomi among the databases from the wide range of environments suggests that a realistic estimate of species susceptibility to P. cinnamomi infection in the south-western region has been obtained. The mean of 40% susceptible and 14% highly susceptible equates to 2284 and 800 species of the 5710 described plant species in the South-West Botanical Province susceptible and highly susceptible to P. cinnamomi, respectively. Such estimates are important for determining the cost of disease to conservation values and for prioritising disease importance and research priorities. P. cinnamomi in south-western Australia is an unparalleled example of an introduced pathogen with a wide host range causing immense irreversible damage to unique, diverse but mainly susceptible plant communities.


2007 ◽  
Vol 29 (1) ◽  
pp. 25 ◽  
Author(s):  
S.D. Bradshaw ◽  
R.D. Phillips ◽  
S. Tomlinson ◽  
R. J. Holley ◽  
S. Jennings ◽  
...  

The Honey possum, Tarsipes rostratus, is an obligate nectarivore, known to feed on plant species from only three Families in south-western Western Australia: Myrtaceae, Proteaceae and Epacridaceae. These plants can be adversely affected by fire, decreased rainfall or groundwater levels and the pathogen Phytophthora cinnamomi. We investigated the ecology of T. rostratus in terms of: (i) how the population fluctuated in response to rainfall and fire over a 20-year period and (ii) changes in diet and movements during a period of decreased food availability in late summer. Mean capture rates were significantly positively correlated with mean flowering rates of Banksia ilicifolia over a 20-year period. Winter capture rates were also significantly positively correlated with both annual and winter rainfall two years prior to trapping in recently burnt areas, but not in long unburnt� areas. Capture rates were significantly higher in unburnt Banksia woodland during winter but densities there have declined since 1996, associated with the death of many Banksia ilicifolia trees from persistent Phytophthora infection. Notwithstanding this decline, winter capture rates in the unburnt areas were still approximately double those in the burnt areas 6 years after the last fire. Short-term capture rates were negatively correlated with barometric pressure, showing that movement and foraging is stimulated by the passage of low pressure frontal weather systems. Despite the paucity of known food sources flowering in late summer and autumn, there was no evidence of T. rostratus using plant species from other than the three above-noted Families. Utilisation areas in summer were also no larger than those previously recorded across all seasons in Scott National Park. Some individuals, however, moved extensive distances to locate spatially restricted food sources. The conservatism of their diet and the sensitivity of the population to changes in rainfall and fire history indicate that T. rostratus populations are particularly vulnerable to some of the environmental changes now occurring in south-western Australia.


2001 ◽  
Vol 7 (4) ◽  
pp. 256 ◽  
Author(s):  
N. Phillips ◽  
D. Newsome

There is presently very little published quantitative information on the environmental impacts of recreational horse riding. Particularly in Western Australia the lack of "hard evidence" concerning the environmental impacts of horse riding hinders objective judgement of damage caused by horse riding in national parks. This paper presents data on horse riding impacts in a Western Australian (D'Entrecasteaux) national park. The research measured vegetation and soil impacts caused by horse use in un-tracked areas with the specific aim of relating the amount of horse use to degree of environmental impact. Horse riding altered plant species composition, increased the area of bare ground and decreased height and cover of vegetation. Significant impacts occurred after only low levels of horse use. The findings indicate the need for a database on horse riding impact in Australia so that, where horse riding is allowed, impacts can be properly assessed and effectively managed.


2000 ◽  
Vol 27 (2) ◽  
pp. 179 ◽  
Author(s):  
C. A. M. Garavanta ◽  
R. D. Wooller ◽  
K. C. Richardson

The movements of marked honey possums,Tarsipes rostratus, were studied using mark–recapture with pitfall traps in heathland on the south coast of Western Australia. Most individuals moved less than 30 m even over several months, with no evidence of marked dispersal. We suggest that this lack of mobility is associated with a detailed knowledge of the locations of those plants that supply all the species’ food. Males moved slightly further than females, possibly to search for mating opportunities and possibly because females exclude males from rich nectar sources. In consequence, the home ranges of males (1277 m2) were significantly larger, on average, than those of females (701 m2).


2005 ◽  
Vol 27 (2) ◽  
pp. 227 ◽  
Author(s):  
CJ Burwell ◽  
F Geiser ◽  
M Barritt ◽  
K May ◽  
CR Pavey

THE fat-tailed false antechinus (Pseudantechinus macdonnellensis) is a medium-sized dasyurid marsupial (body mass 18-33 g), that is endemic to central Australia. It is largely confined to rocky environments in the Northern Territory, Western Australia and South Australia (Menkhorst and Knight 2001). Despite its specialised habitat, the species is a generalist insectivore. Ten insect orders and spiders (Araneae) were recorded in faecal samples of a population in West MacDonnell National Park, Northern Territory, during a two and a half year study (Gilfillan 2001). Isoptera, Coleoptera and Orthoptera were the major insect orders in the diet. Here we report the results of the analysis of a small sample of faeces of P. macdonnellensis collected from the same location as the population studied by Gilfillan. Our results are noteworthy because of additions to the prey taken by P. macdonnellensis including three new classes and two new phyla.


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