Archive for the ‘General’ Category

Winter fauna assessments for environmental impact assessments

The EPBC Act and EPA websites frequently publish fauna survey and assessment reports. In addition there are numerous other fauna surveys undertaken to support mining applications or native vegetation clearing permit applications to the Department on Mines and Petroleum (DMP), Department of Environment (DoE), Department of Parks and Wildlife (DPaW) and the Environmental Protection Authority (EPA) […]... [READ MORE HERE]

Monitoring Malleefowl mounds with cameras

There is often a need to monitor activity levels associated with Malleefowl mounds. Males, and sometime pairs, will commence mound building or mound maintenance activity in winter and spring planning to lay eggs as the weather warms. The decomposing vegetation raked into the centre of the mound requires moisture for it to decompose at a […]... [READ MORE HERE]

Bilbies in the Pilbara – expect the unexpected

Abbott (2001) reported that bilbies were once common in the south-west of Western Australia, with three records near Bridgetown. In the south-west of WA they lived in open forest and woodland of the northern and eastern Jarrah forests. Abbott (2001) suggested that the fox was the primary cause of its demise in this area, although […]... [READ MORE HERE]

Searching and trapping for Mulgara in the Pilbara

Last week Terrestrial Ecosystems presented at the Department of Parks and Wildlife (DPaW) workshop on Mulgara. This is one a number of workshops being organised by DPaW on Pilbara threatened species. There was much discussion on which Mulgara species is in WA. The general consensus is that we have Dasycercus blythi, however, there are some […]... [READ MORE HERE]

Preference for related mates in the fruit fly, Drosophila melanogaster

Somewhat surprisingly, recent research predicts that some animals might actually have higher overall reproductive fitness if they mate with a relative. This theory is known as optimal inbreeding and is caused by the inclusive fitness benefits of inbreeding. For a detailed explanation of optimal inbreeding see Stephen’s other research work (insert link to other blog) […]... [READ MORE HERE]

Climbing goannas are able to overcome a trade-off in sprint speed by increasing stride frequency

Often when a species develops a performance trait that gives it an advantage in doing a particular task or surviving in a particular environment, this inhibits other performance specializations. For example, lizards that occupy open spaces on the ground would normally have a high sprint speed but may not be overly agile in comparison with […]... [READ MORE HERE]

Optimal breeding or just random mating in the wild?

When an individual helps a close relative to produce offspring, the relative will pass on genes to the offspring that are shared in common with the original individual. In this way, some of the original individual’s genes are passed on with out them actually producing their own offspring. The benefit gained from this is known […]... [READ MORE HERE]

Aerial photography proves an effective method for searching for Malleefowl mounds

We searched an area of 70km² in the mid-west using high definition aerial photography for Malleefowl mounds. This area was searched on the ground in 2008, and all more recently discovered Malleefowl mounds had been added to the database that we used in this assessment. The aerial survey captured the area using a Microsoft Ultracam […]... [READ MORE HERE]

How close is too close? – No evidence for optimal fitness at intermediate levels of inbreeding in Drosophila melanogaster

It’s well known that animals can have low fitness if their parents are close relatives such as brothers and sisters. It’s probably less well known that there are also examples of where animals can have low fitness because their parents are too distantly related. Because of these two factors it has been suggested that intermediate […]... [READ MORE HERE]

Fauna surveys and assessments using cameras – beware the unknown

Wildlife researchers have used automated cameras to detect and observe wildlife since at least the 1950s. The very early models were often built by the researcher and allowed a single exposure until the camera was reset, and most could not be used in adverse weather conditions. The trigger mechanism varied for the early models and […]... [READ MORE HERE]

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