Noad M.J.,University of Queensland |
Dunlop R.A.,University of Queensland |
Paton D.,Jamison Center |
Cato D.H.,Defence Science and Technology Organisation, Australia |
Cato D.H.,University of Sydney
Journal of Cetacean Research and Management | Year: 2011
The humpback whales that migrate along the east coast of Australia were hunted to near-extinction in the 1950s and early 1960s. Two independent series of land-based surveys conducted over the last 25 years during the whales' northward migration along the Australian coastline have demonstrated a rapid increase in the size of the population. In 2004 we conducted a survey of the migratory population as a continuation of these series of surveys. Two methods of data analysis were used in line with the previous surveys, both for calculation of absolute and relative abundance. We consider the best estimates for 2004 to be 7,090±660 (95% CI) whales with an annual rate of increase of 10.6±0.5% (95% CI) for 1987-2004. The rate of increase agrees with those previously obtained for this population and demonstrates the continuation of a strong post-exploitation recovery. While there are still some uncertainties concerning the absolute abundance estimate and structure of this population, the rate of annual increase should be independent of these and highly robust.
Polanowski A.M.,Australian Antarctic Division |
Robinson-Laverick S.M.,Australian Antarctic Division |
Paton D.,Jamison Center |
Jarman S.N.,Australian Antarctic Division
Journal of Heredity | Year: 2012
Tyrosinase-negative oculocutaneous albinism (OCA1A) is characterized by lifelong white hair and skin, a phenotype that has been described in most mammalian species worldwide. Tyrosinase is the key enzyme in melanin biosynthesis, and mutations in the tyrosinase gene result in OCA1A. We examined sequence variation at exon 1 of the tyrosinase gene in 66 humpback whale samples collected from the east coast of Australia, including an anomalously white humpback whale known as "Migaloo." We identified 3 novel variants, including a cytosine deletion that results in a premature stop codon in exon 1. The deletion truncates the tyrosinase protein including the putative catalytic domains that are essential for tyrosinase enzymatic activity. Migaloo was homozygous for this deletion, suggesting that the albino phenotype is a consequence of inactive tyrosinase caused by the frameshift in the tyrosinase gene. © The American Genetic Association. 2011. All rights reserved.
Cummings J.,Jamison Center
Journal of Cleaner Production | Year: 2014
At the invitation of the editors to write an opinion piece, I drafted this to hopefully spark a conversation about the role of the industry in innovation and leading practice development, particularly in relation to land rehabilitation. Having been involved in land rehabilitation as a student, educator, researcher, practitioner and thinker over the last 20 years, my sense is there is a great opportunity for the minerals industry to rediscover its leadership role-which is linked to its social license to operate. © 2014 Elsevier Ltd. All rights reserved.
Elsenbroich C.,University of Surrey |
Badham J.,Jamison Center
JASSS | Year: 2015
This article analyses a series of emails thanking Nigel for his stewardship of JASSS and the characteristics of their authors. It identifies a correlation between two measures of author activity in social simulation research, but no pattern between these activity measures and the email timing. Instead, the sequence suggests a classic standing ovation effect. © 2015 JASSS.
Smith J.N.,University of Queensland |
Smith J.N.,Murdoch University |
Grantham H.S.,University of Queensland |
Gales N.,Australian Antarctic Division |
And 3 more authors.
Marine Ecology Progress Series | Year: 2012
During the winter months, from June to September, humpback whales Megaptera novaeangliae breed and calve in the waters of the Great Barrier Reef (GBR) after migrating north from Antarctic waters. Clearly defined wintering areas for breeding and calving comparable to those identified in other parts of the world have not yet been identified for humpback whales in the GBR Marine Park (GBRMP), mainly because of its large size, which prohibits broad-scale surveys. To identify important wintering areas in the GBRMP, we developed a predictive spatial habitat model using the Maxent modelling method and presence-only sighting data from nondedicated aerial surveys. The model was further validated using a small independent satellite tag data set of 12 whales migrating north into the GBR. The model identified restricted ranges in water depth (30 to 58 m, highest probability 49 m) and sea surface temperature (21 to 23°C, highest probability 21.8°C) and identified 2 core areas of higher probability of whale occurrence in the GBRMP, which correspond well with the movements of satellite tagged whales. We propose that one of the identified core areas is a potentially important wintering area for humpback whales and the other a migration route. With an estimated increase in port and coastal development and shipping activity in the GBRMP and a rapidly increasing population of whales recovering from whaling off the east Australian coast, the rate of human interactions with whales is likely to increase. Identifying important areas for breeding and calving is essential for the future management of human interactions with breeding humpback whales. © 2012 Inter-Research.