Management of dugong : an endangered marine species of traditional significance

Because of its inherent value as a food item, the dugong has occupied a significant role in the life styles of north-east coast Queensland indigenous people. The need for management of dugong, an endangered species found within Great Barrier Reef waters, is established. The Great Barrier Reef Marine Park Authority has indicated its commitment to conservation of endangered species. Successful management must be based on sound research, developed in conjunction with relevant government agencies & “user” groups, and interpreted by effective education programs. Existing research programs in Australia and information needs related to dugongs are outlined. Only by “user” involvement in the development of an integrated research, management and education program will the dugong population of northeast Queensland be able to be conserved and used on a sustainable basis

Impact of elevated nutrients in the Great Barrier Reef

Nutrient levels in inshore GBR waters are reaching levels that have caused detrimental effects to corals elsewhere, though the evidence of damage to coral communities in the Marine Park is still primarily circumstantial. Preliminary studies indicate that nutrient levels in the central GBR are almost twice as high as those in the northern more pristine waters. Whether levels of nutrients have increased in parts of the Marine Park over the past couple of decades has still not been established. Further research is required to evaluate the actual effect on GBR coral reef biota of present levels of nutrients and the levels of nitrogen and phosphorus and exposure time required to result in both short and long term damage to coral reef communities. Appropriate research and monitoring to resolve these questions are long term and costly. In the meantime, the implications of Reef deterioration are serious and consideration must now be given to ensuring that levels of nutrients do not increase in the future due to human activities

Nutrients in the Great Barrier Reef Region : proceedings of a workshop held in Townsville, Australia, 26 and 27 November 1987

In response to a perceived problem regarding nutrient levels at localised sites in the Great Barrier Reef Marine Park, GBRMPA held a Workshop on Nutrients in the Great Barrier Reef Region on 26 and 27 November 1987. Over forty participants attended the Workshop, chemistry, including researchers in the disciplines of biology, engineering, geology and oceanography as well as State and Commonwealth government water quality and marine park managers. The Nutrient Workshop provided a forum for examination of roles and responsibilities regarding water quality; an opportunity for discussion and interchange of ideas on a technical level regarding research undertaken; and guidance to the Marine Park Authority in relation to management of enhanced nutrients in the Marine Park

Brucella abortus siderophore 2,3-dihydroxybenzoic acid protects brucellae from killing by macrophages

Addition of 2,3-dihydroxybenzoic acid, a siderophore produced by Brucella abortus, to macrophage cultures prevented intracellular killing of brucellae during the first 12 h after infection and increased the number of intracellular brucellae recovered at 48 h after infection. The protective effect could be demonstrated with inflammatory macrophages, interferon-gamma-activated macrophages and with macrophages supplemented with iron, shown elsewhere to facilitate killing of B abortus

Tularaemia: A challenging zoonosis

In recent years, several emerging zoonotic vector-borne infections with potential impact on human health have been identified in Europe, including tularaemia, caused by Francisella tularensis.This remarkable pathogen, one of the most virulent microorganisms currently known, has been detected in increasingly new settings and in a wide range of wild species, including lagomorphs, rodents, carnivores, fish and invertebrate arthropods. Also, a renewed concern has arisen with regard to F. tularensis: its potential use by bioterrorists. Based on the information published concerning the latest outbreaks, the aim of this paper is to review the main features of the agent, its biology, immunology and epidemiology. Moreover, special focus will be given to zoonotic aspects of the disease, as tularaemia outbreaks in human populations have been frequently associated with disease in animals

Psychology and aggression

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/68264/2/10.1177_002200275900300301.pd

Walking with light and the discontinuous experience of urban change

The information, practices and views in this article are those of the author and do not necessarily reflect the opinion of the Royal Geographical Society (with IBG). © 2020 The Authors. Transactions of the Institute of British Geographers published by John Wiley & Sons Ltd on behalf of Royal Geographical Society (with The Institute of British Geographers). This paper is concerned with the affective power of light, darkness, and illumination and their role in exposing and obscuring processes of rapid urban change. Little academic attention has focused on how lighting informs multiple, overlapping, and intersecting urban temporalities and mediates our experience of an ever-changing city. This paper foregrounds a walk through the illuminated city at night as an epistemic opportunity to develop an embodied account of material and temporal change in ways that disrupt the aesthetic organisation of the sensible world at night. By detailing the discontinuous experience of walking through differently lit spaces, the paper develops novel ways of conceptualising the experience of urban change that unsettle common understandings of subjectivity, temporality, and the city. The paper draws on a single night's walk from Canning Town to Canary Wharf in east London – an area that has recently undergone rapid change, including the erection of enclaves of high-rise development. By accentuating the shared experiences of walking with light, we reveal the affective capacities of light and dark to conceal and expose wider material, embodied, and temporal urban changes but also how we might challenge the organisation of the nocturnal field of the sensible