Geoff Lundie-Jenkins | Queensland Museum (original) (raw)
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Papers by Geoff Lundie-Jenkins
Identification of oestrous is an important step in the captive breeding of the Julia Creek dunnar... more Identification of oestrous is an important step in the captive breeding of the Julia Creek dunnart (Sminthopsis douglasi) at David Fleay Wildlife Park (Qld). This is necessary in order to prevent injury to the male and/or the female of this endangered carnivorous marsupial. Oestrous in S. douglasi is currently identified by the presence of cornified cells in the urine. However, oestrous has recently been identified in S. douglasi by behavioural observations. This research aims to identify and quantify reproductive behaviour through the application of machine vision technology, thus reducing the amount of human observation required in the identification of oestrous in this and similar species. Images from two adjoining cages containing a male and a female S. douglasi were captured on video via a CCD camera. The cages were illuminated by an array of infrared light-emitting diodes. Contrast between the animals and the background in successive frames of the video stream enables the location of the dunnart in each image to be defined. This location is recorded in terms of vertical and horizontal position based on a local coordinate system. This stream of coordinate data can be transformed into behavioural information. Behaviours useful in identifying oestrous have been validated in a previous study.
... Identifying the reproductive state of female Julia Creek dunnarts (Sminthopsis douglasi) by b... more ... Identifying the reproductive state of female Julia Creek dunnarts (Sminthopsis douglasi) by behavioural observations A dissertation submitted by Alice Bjursell ... Page 2. Abstract The Julia Creek dunnart (Sminthopsis douglasi) is an endangered carnivorous marsupial. ...
BioScience
Nature conservation is underresourced, requiring managers to prioritize where, when, and how to s... more Nature conservation is underresourced, requiring managers to prioritize where, when, and how to spend limited funds. Prioritization methods identify the subset of actions that provide the most benefit to an actor's objective. However, spending decisions by conservation actors are often misaligned with their objectives. Although this misalignment is frequently attributed to poor choices by the actors, we argue that it can also be a byproduct of working alongside other organizations. Using strategic analyses of multi-actor systems in conservation, we show how interactions among multiple conservation actors can create misalignment between the spending and objectives of individual actors and why current uncoordinated prioritizations lead to fewer conservation objectives achieved for individual actors. We draw three conclusions from our results. First, that misalignment is an unsuitable metric for evaluating spending, because it may be necessary to achieve actors’ objectives. Second,...
Identification of oestrous is an important step in the captive breeding of the Julia Creek dunnar... more Identification of oestrous is an important step in the captive breeding of the Julia Creek dunnart (Sminthopsis douglasi) at David Fleay Wildlife Park (Qld). This is necessary in order to prevent injury to the male and/or the female of this endangered carnivorous marsupial. Oestrous in S. douglasi is currently identified by the presence of cornified cells in the urine. However, oestrous has recently been identified in S. douglasi by behavioural observations. This research aims to identify and quantify reproductive behaviour through the application of machine vision technology, thus reducing the amount of human observation required in the identification of oestrous in this and similar species. Images from two adjoining cages containing a male and a female S. douglasi were captured on video via a CCD camera. The cages were illuminated by an array of infrared light-emitting diodes. Contrast between the animals and the background in successive frames of the video stream enables the location of the dunnart in each image to be defined. This location is recorded in terms of vertical and horizontal position based on a local coordinate system. This stream of coordinate data can be transformed into behavioural information. Behaviours useful in identifying oestrous have been validated in a previous study.
Australian Mammalogy, 1996
Three species of rock-wallabies are currently known from the Northern Territory (N.T.). The Black... more Three species of rock-wallabies are currently known from the Northern Territory (N.T.). The Black-footed Rock-wallaby Petrogale lateralis is listed by ANZECC as vulnerable and N.T. populations are known to have declined over the past 40 years. The conservation status of the other two species from the N.T., the Short-eared Rock-wallaby Petrogale brachyotis and the Nabarlek Petrogale concinna is uncertain. Both species are officially listed as common however their ranges appear to be highly fragmented and populations have declined in several locations. Whilst there are populations of all three species represented in the N.T. reserve system there are currently no formal programs to monitor or manage these populations. The factors of most concern in relation to conservation of rock-wallabies in the N.T. are changes in fire regimes, grazing by feral and domestic stock and introduced predators.
Australian Mammalogy, 1993
Observations on the behaviour of the Rufous Hare-wallaby Lagorchestes hirsutus were obtained from... more Observations on the behaviour of the Rufous Hare-wallaby Lagorchestes hirsutus were obtained from a captive colony maintained in Alice Springs. This information was used to interpret observations of animals made during field studies in the Tanami Desert. Aspects of the species' behavioural repertoire which were recorded included activity patterns, postures, gaits, interactions, nesting habits and vocalisations. Lagorchestes hirsutus is predominantly nocturnal and its activity patterns and body postures resemble those recorded for other species of small macropods. It appears to be a relatively solitary animal but there was some evidence of social organisation within animals maintained in captivity. Aspects of the sexual and aggressive behaviour of L. hirsutus appear to resemble more closely those of the potoroids than of larger macropodids.
Australian Mammalogy, 1994
Wildlife Research, 1999
The effect of strychnine baiting on non-target bird species was investigated in Queensland, Austr... more The effect of strychnine baiting on non-target bird species was investigated in Queensland, Australia, during August and September 1995. Strychnine was aerially applied to 250 000 ha of crop to control high densities of mice. Searching for bird carcasses was conducted in two regions. A sample of the birds collected was chemically tested for the presence of strychnine and other poisons. We attributed strychnine poisoning to 117 of 157 birds found. The proportions of birds of each major feeding group that tested positive to strychnine were 82.2% for granivores, 55.5% for raptors, and 69.3% for omnivores. Most bird carcasses (80%) were found on the edge of the baited crop or within 10 m of the edge of the crop. Of the 11 birds analysed quantitatively, the average level of strychnine in the liver, gizzard and crop was 10.80 µg g-1 (± 5.77 s.e., n = 7), 77.30 µg g-1 (± 42.41 s.e., n = 10) and 372.17 µg g-1 (± 334.59 s.e., n = 3) respectively. Significantly more poisoned birds were found ...
Australian Mammalogy, 1993
NA
Broad-scale aerial surveys of kangaroo populations have been conducted regularly over vast areas ... more Broad-scale aerial surveys of kangaroo populations have been conducted regularly over vast areas of the rangelands since the 1970s to monitor population trends and to determine harvest quotas. Whilst there is obvious worth in monitoring kangaroos in their own right they may also be useful as surrogates for other elements of the biodiversity and as indicators of environmental change. In the relatively open habitats of the rangelands, conspicuous animals such as kangaroos are amenable to aerial survey. Other survey methods such as direct counts from vehicles or indirect monitoring such as harvest statistics, including catch per unit effort or harvest sex ratio, are restricted in their potential survey frequency and extent due to cost and also vary in their reliability. Kangaroo monitoring programs have several characteristics that make them attractive for monitoring biological diversity in the rangelands. These include systematic design, standardised methods, annual surveys and strong...
Identification of oestrous is an important step in the captive breeding of the Julia Creek dunnar... more Identification of oestrous is an important step in the captive breeding of the Julia Creek dunnart (Sminthopsis douglasi) at David Fleay Wildlife Park (Qld). This is necessary in order to prevent injury to the male and/or the female of this endangered carnivorous marsupial. Oestrous in S. douglasi is currently identified by the presence of cornified cells in the urine. However, oestrous has recently been identified in S. douglasi by behavioural observations. This research aims to identify and quantify reproductive behaviour through the application of machine vision technology, thus reducing the amount of human observation required in the identification of oestrous in this and similar species. Images from two adjoining cages containing a male and a female S. douglasi were captured on video via a CCD camera. The cages were illuminated by an array of infrared light-emitting diodes. Contrast between the animals and the background in successive frames of the video stream enables the location of the dunnart in each image to be defined. This location is recorded in terms of vertical and horizontal position based on a local coordinate system. This stream of coordinate data can be transformed into behavioural information. Behaviours useful in identifying oestrous have been validated in a previous study.
... Identifying the reproductive state of female Julia Creek dunnarts (Sminthopsis douglasi) by b... more ... Identifying the reproductive state of female Julia Creek dunnarts (Sminthopsis douglasi) by behavioural observations A dissertation submitted by Alice Bjursell ... Page 2. Abstract The Julia Creek dunnart (Sminthopsis douglasi) is an endangered carnivorous marsupial. ...
BioScience
Nature conservation is underresourced, requiring managers to prioritize where, when, and how to s... more Nature conservation is underresourced, requiring managers to prioritize where, when, and how to spend limited funds. Prioritization methods identify the subset of actions that provide the most benefit to an actor's objective. However, spending decisions by conservation actors are often misaligned with their objectives. Although this misalignment is frequently attributed to poor choices by the actors, we argue that it can also be a byproduct of working alongside other organizations. Using strategic analyses of multi-actor systems in conservation, we show how interactions among multiple conservation actors can create misalignment between the spending and objectives of individual actors and why current uncoordinated prioritizations lead to fewer conservation objectives achieved for individual actors. We draw three conclusions from our results. First, that misalignment is an unsuitable metric for evaluating spending, because it may be necessary to achieve actors’ objectives. Second,...
Identification of oestrous is an important step in the captive breeding of the Julia Creek dunnar... more Identification of oestrous is an important step in the captive breeding of the Julia Creek dunnart (Sminthopsis douglasi) at David Fleay Wildlife Park (Qld). This is necessary in order to prevent injury to the male and/or the female of this endangered carnivorous marsupial. Oestrous in S. douglasi is currently identified by the presence of cornified cells in the urine. However, oestrous has recently been identified in S. douglasi by behavioural observations. This research aims to identify and quantify reproductive behaviour through the application of machine vision technology, thus reducing the amount of human observation required in the identification of oestrous in this and similar species. Images from two adjoining cages containing a male and a female S. douglasi were captured on video via a CCD camera. The cages were illuminated by an array of infrared light-emitting diodes. Contrast between the animals and the background in successive frames of the video stream enables the location of the dunnart in each image to be defined. This location is recorded in terms of vertical and horizontal position based on a local coordinate system. This stream of coordinate data can be transformed into behavioural information. Behaviours useful in identifying oestrous have been validated in a previous study.
Australian Mammalogy, 1996
Three species of rock-wallabies are currently known from the Northern Territory (N.T.). The Black... more Three species of rock-wallabies are currently known from the Northern Territory (N.T.). The Black-footed Rock-wallaby Petrogale lateralis is listed by ANZECC as vulnerable and N.T. populations are known to have declined over the past 40 years. The conservation status of the other two species from the N.T., the Short-eared Rock-wallaby Petrogale brachyotis and the Nabarlek Petrogale concinna is uncertain. Both species are officially listed as common however their ranges appear to be highly fragmented and populations have declined in several locations. Whilst there are populations of all three species represented in the N.T. reserve system there are currently no formal programs to monitor or manage these populations. The factors of most concern in relation to conservation of rock-wallabies in the N.T. are changes in fire regimes, grazing by feral and domestic stock and introduced predators.
Australian Mammalogy, 1993
Observations on the behaviour of the Rufous Hare-wallaby Lagorchestes hirsutus were obtained from... more Observations on the behaviour of the Rufous Hare-wallaby Lagorchestes hirsutus were obtained from a captive colony maintained in Alice Springs. This information was used to interpret observations of animals made during field studies in the Tanami Desert. Aspects of the species' behavioural repertoire which were recorded included activity patterns, postures, gaits, interactions, nesting habits and vocalisations. Lagorchestes hirsutus is predominantly nocturnal and its activity patterns and body postures resemble those recorded for other species of small macropods. It appears to be a relatively solitary animal but there was some evidence of social organisation within animals maintained in captivity. Aspects of the sexual and aggressive behaviour of L. hirsutus appear to resemble more closely those of the potoroids than of larger macropodids.
Australian Mammalogy, 1994
Wildlife Research, 1999
The effect of strychnine baiting on non-target bird species was investigated in Queensland, Austr... more The effect of strychnine baiting on non-target bird species was investigated in Queensland, Australia, during August and September 1995. Strychnine was aerially applied to 250 000 ha of crop to control high densities of mice. Searching for bird carcasses was conducted in two regions. A sample of the birds collected was chemically tested for the presence of strychnine and other poisons. We attributed strychnine poisoning to 117 of 157 birds found. The proportions of birds of each major feeding group that tested positive to strychnine were 82.2% for granivores, 55.5% for raptors, and 69.3% for omnivores. Most bird carcasses (80%) were found on the edge of the baited crop or within 10 m of the edge of the crop. Of the 11 birds analysed quantitatively, the average level of strychnine in the liver, gizzard and crop was 10.80 µg g-1 (± 5.77 s.e., n = 7), 77.30 µg g-1 (± 42.41 s.e., n = 10) and 372.17 µg g-1 (± 334.59 s.e., n = 3) respectively. Significantly more poisoned birds were found ...
Australian Mammalogy, 1993
NA
Broad-scale aerial surveys of kangaroo populations have been conducted regularly over vast areas ... more Broad-scale aerial surveys of kangaroo populations have been conducted regularly over vast areas of the rangelands since the 1970s to monitor population trends and to determine harvest quotas. Whilst there is obvious worth in monitoring kangaroos in their own right they may also be useful as surrogates for other elements of the biodiversity and as indicators of environmental change. In the relatively open habitats of the rangelands, conspicuous animals such as kangaroos are amenable to aerial survey. Other survey methods such as direct counts from vehicles or indirect monitoring such as harvest statistics, including catch per unit effort or harvest sex ratio, are restricted in their potential survey frequency and extent due to cost and also vary in their reliability. Kangaroo monitoring programs have several characteristics that make them attractive for monitoring biological diversity in the rangelands. These include systematic design, standardised methods, annual surveys and strong...
Fraser Island is a popular international tourist destination with large numbers of visitors choos... more Fraser Island is a popular international tourist destination with large numbers of visitors choosing to spend time enjoying the many experiences available at this World Heritage site. It is also home to the dingo, an iconic species and top predator that helps balance the island’s natural food chain. Managing the conservation and welfare of wild dingoes on Fraser Island, in combination with the divergent expectations of the community, including the Butchulla Traditional Owners, tourism operators, residents and visitors, regarding their interactions with these animals, is a complex and challenging job.
The Queensland Government’s Fraser Island Dingo Conservation and Risk Management Strategy (the strategy) provides an overarching framework for wild dingo management on the island. The strategy draws on the positive achievements of the past and the considerations of a major peer review carried out by independent experts. Central to the strategy is an emphasis the importance of day-to-day management and community engagement and education, compliance, research, monitoring and reporting.
The strategy addresses key concerns regarding the conservation and welfare of dingoes and human safety. A focus area of the strategy is the establishment of an integrated research program to address gaps in knowledge in conjunction with an evaluation program to promote continuous improvement through adaptive management.
Grzimek's Animal Life Encyclopedia, 2003
Measuring and Monitoring Biological Diversity: Standard Methods for Mammals, 1996