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Articles 1 - 4 of 4
Full-Text Articles in Social and Behavioral Sciences
Predicting Avian Distributions To Evaluate Spatiotemporal Overlap With Locust Control Operations In Eastern Australia, Judit K. Szabo, Pamela J. Davy, Michael Hooper, Lee Astheimer
Predicting Avian Distributions To Evaluate Spatiotemporal Overlap With Locust Control Operations In Eastern Australia, Judit K. Szabo, Pamela J. Davy, Michael Hooper, Lee Astheimer
Faculty of Science - Papers (Archive)
Locusts and grasshoppers cause considerable economic damage to agriculture worldwide. The Australian Plague Locust Commission uses multiple pesticides to control locusts in eastern Australia. Avian exposure to agricultural pesticides is of conservation concern, especially in the case of rare and threatened species. The aim of this study was to evaluate the probability of pesticide exposure of native avian species during operational locust control based on knowledge of species occurrence in areas and times of application. Using presence-absence data provided by the Birds Australia Atlas for 1998 to 2002, we developed a series of generalized linear models to predict avian occurrences …
Prediction Of The Probability Of Large Fires In The Sydney Region Of South-Eastern Australia Using Components Of Fire Weather., R A. Bradstock, J S. Cohn, A M. Gill, M Bedward, C Lucas
Prediction Of The Probability Of Large Fires In The Sydney Region Of South-Eastern Australia Using Components Of Fire Weather., R A. Bradstock, J S. Cohn, A M. Gill, M Bedward, C Lucas
Faculty of Science - Papers (Archive)
The probability of large-fire (>= 1000 ha) ignition days, in the Sydney region, was examined using historical records. Relative influences of the ambient and drought components of the Forest Fire Danger Index (FFDI) on large fire ignition probability were explored using Bayesian logistic regression. The preferred models for two areas (Blue Mountains and Central Coast) were composed of the sum of FFDI (Drought Factor, DF = 1) (ambient component) and DF as predictors. Both drought and ambient weather positively affected the chance of large fire ignitions, with large fires more probable on the Central Coast than in the Blue …
U-Pb Zircon Geochronology And Nd Isotopic Signatures Of The Pre-Mesozoic Metamorphic Basement Of The Eastern Peruvian Andes: Growth And Provenance Of A Late Neoproterozoic To Carboniferous Accretionary Orogen On The Northwest Margin Of Gondwana, A Cardona, U G. Cordani, J Ruiz, V A. Valencia, R Armstrong, D Chew, A Nutman, A W. Sanchez
U-Pb Zircon Geochronology And Nd Isotopic Signatures Of The Pre-Mesozoic Metamorphic Basement Of The Eastern Peruvian Andes: Growth And Provenance Of A Late Neoproterozoic To Carboniferous Accretionary Orogen On The Northwest Margin Of Gondwana, A Cardona, U G. Cordani, J Ruiz, V A. Valencia, R Armstrong, D Chew, A Nutman, A W. Sanchez
Faculty of Science - Papers (Archive)
This study integrates U-Pb zircon geochronology (from LAM-ICP-MS, SHRIMP, and TIMS) with Nd isotopic data from orthogneisses and metasedimentary rocks of the pre-Mesozoic basement of the eastern Peruvian Andes to provide new information on the tectonic evolution and Neoproterozoic-Paleozoic paleogeography of this segment of the proto-Andean margin. A high-grade orthogneiss unit yields U-Pb zircon protolith crystallization ages of ~613 Ma. It was metamorphosed and intruded by an Early Ordovician granitoid. Subsequently, two different volcano-sedimentary sequences were laid down and metamorphosed, probably as a consequence of terrane accretion. The older sequence was deposited and metamorphosed between 450 and 420 Ma, and …
Assessment Of Eastern Bristlebird Habitat: Refining Understanding Of Appropriate Habitats For Reintroductions, Jack Baker
Faculty of Science - Papers (Archive)
The cryptic Eastern Bristlebird (Dasyornis brachypterus) is an endangered endemic of south-eastern Australia. Its distribution is highly fragmented with only two populations exceeding 500 individuals. Consequently, recovery planning includes translocation to increase the number of viable populations. The Eastern Bristlebird is typically found in low, dense vegetation. The species occurs in 26 different plant communities throughout its range, which suggests that it might be considered a habitat generalist. However, two studies based on aural surveys have demonstrated that it was conspicuous at heath-wood ecotones. Radiotracking was used to overcome reliance on aural surveys and to investigate the habitat of 12 …