Dispersal and the metapopulation paradigm in amphibian ecology and conservation : are all amphibian populations metapopulations?
Breeding patch isolation via limited dispersal and/or strong site fidelity was the most frequently implicated or tested metapopulation condition, however there is strong evidence that amphibian dispersal is not as uniformly limited as is often thought.
Extreme diversity of tropical parasitoid wasps exposed by iterative integration of natural history, DNA barcoding, morphology, and collections
- M. Smith, Josephine J. Rodriguez, P. Hebert
- Biology, Environmental ScienceProceedings of the National Academy of Sciences
- 26 August 2008
DNA barcoded 2,597 parasitoid wasps belonging to 6 microgastrine braconid genera reared from parapatric tropical dry forest, cloud forest, and rain forest in northwestern Costa Rica and combined these data with records of caterpillar hosts and morphological analyses to result in a much more fine-scaled understanding of Parasitoid diversity and host specificity.
New Ages for the Last Australian Megafauna: Continent-Wide Extinction About 46,000 Years Ago
- R. Roberts, T. Flannery, Barton L Smith
- Environmental Science, GeographyScience
- 8 June 2001
This work reports burial ages for megafauna from 28 sites and infer extinction across the continent around 46,400 years ago, ruling out extreme aridity at the Last Glacial Maximum as the cause of extinction, but not other climatic impacts; a "blitzkrieg" model of human-induced extinction; or an extended period of anthropogenic ecosystem disruption.
A minimalist barcode can identify a specimen whose DNA is degraded
- Mehrdad Hajibabaei, M. Smith, D. Janzen, Josephine J. Rodriguez, J. Whitfield, P. Hebert
- Biology
- 1 December 2006
Short barcodes were effective in identifying specimens, confirming their utility in circumstances where full barcodes are too expensive to obtain and the identification comparisons are within a confined taxonomic group.
DNA barcodes reveal cryptic host-specificity within the presumed polyphagous members of a genus of parasitoid flies (Diptera: Tachinidae).
- M. Smith, N. Woodley, D. Janzen, W. Hallwachs, P. Hebert
- BiologyProceedings of the National Academy of Sciences…
- 7 March 2006
If general, these results will increase estimates of global species richness and imply that tropical conservation and host-parasite interactions may be more complex than expected.
MAPPING THE PLATE TECTONIC RECONSTRUCTION OF SOUTHERN AND SOUTHEASTERN AUSTRALIA AND IMPLICATIONS FOR PETROLEUM SYSTEMS
- M. Norvick, M. Smith
- Geology, Environmental Science
- 2001
Southern Australian breakup history is divisible into three phases. The first phase began with Callovian (c.159–165 Ma) rifting in the western Bight Basin. During the Tithonian (c.142–146 Ma),…
DNA barcoding for effective biodiversity assessment of a hyperdiverse arthropod group: the ants of Madagascar
- M. Smith, B. Fisher, P. Hebert
- Environmental Science, BiologyPhilosophical Transactions of the Royal Society B…
- 29 October 2005
It is demonstrated how DNA barcoding helps address the failure of current inventory methods to rapidly respond to pressing biodiversity needs, specifically in the assessment of richness and turnover across landscapes with hyperdiverse taxa.
Trends in mortality ratios among cattle in US feedlots.
- G. Loneragan, D. Dargatz, P. Morley, M. Smith
- MedicineJournal of the American Veterinary Medical…
- 15 October 2001
Results suggested that although overall yearly mortality ratio did not significantly increase during the study, the risk of death attributable to respiratory tract disorders was increased during most years, compared withrisk of death during 1994.
Thermoluminescence dating of a 50,000-year-old human occupation site in northern Australia
- R. Roberts, Rhys Jones, M. Smith
- Environmental Science, MedicineNature
- 1 May 1990
THE oldest secure date for human occupation in Greater Australia is 40kyr from eastern Papua New Guinea1, whereas slightly younger dates have been reported from southern Australia2. We now report…
DNA barcodes affirm that 16 species of apparently generalist tropical parasitoid flies (Diptera, Tachinidae) are not all generalists
- M. Smith, D. Wood, D. Janzen, W. Hallwachs, P. Hebert
- BiologyProceedings of the National Academy of Sciences
- 20 March 2007
The results reinforce the emerging suspicion that estimates of global species richness are likely underestimates for parasitoids and that the strategy of being a tropical generalist parasitic fly may be yet more unusual than has been envisioned for tachinids.
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